LIQUID-CRYSTALLINE MEDIUM AND LIQUID-CRYSTAL DISPLAY COMPRISING THE SAME AND COMPOUNDS

Abstract

A liquid-crystalline medium, preferably having a nematic phase, comprising one or more compounds of formula C

##STR00001## the use thereof in an energy-efficient electro-optical display, particularly in an active-matrix display based on the IPS or FFS effect, displays of this type which contain a liquid-crystalline medium of this type, and the use of the compounds of formula C for improvement of the contrast and/or response times of a liquid-crystalline medium which comprises one or more additional mesogenic compounds.

Claims

1. A liquid-crystalline medium, comprising one or more compounds of formula C ##STR00483## in which ##STR00484## denotes ##STR00485## ##STR00486## denotes, in each occurrence independently of one another, ##STR00487## R.sup.C1 and R.sup.C2, independently of one another, denote, an alkyl radical having 1 to 15 C atoms, wherein one or more CH.sub.2 groups in these radicals may each be replaced, independently of one another, by CHCH, CC, CF.sub.2O, OCF.sub.2, O, (CO)O, O(CO), cyclopropylene, 1,3-cyclobutylene, 1,3-cyclopentylene, 1,3-cyclopentenylene, 1,2-cyclopropyl, alkyl, alkenyl, alkenyloxy, alkoxyalkyl or fluorinated alkenyl having 2 to 7 C atoms, in such a way that 0 atoms are not linked directly to one another, and in which one or more H atoms may be replaced by halogen, and wherein the respective rings may each be substituted by one or two alkyl groups, preferably by methyl and/or ethyl groups, and one or more compounds of formula B, ##STR00488## in which ##STR00489## denotes ##STR00490## ##STR00491## denotes, in each occurrence independently of one another, ##STR00492## n denotes 1 or 2, R.sup.1 has one of the meanings given for R.sup.C1, and X.sup.1 denotes F, Cl, fluorinated alkyl, fluorinated alkenyl, fluorinated alkoxy or fluorinated alkenyloxy.

2. The medium according to claim 1, further comprising one or more compounds selected from the group consisting of compounds of formulae II and III ##STR00493## ##STR00494## in which R.sup.2 has one of the meanings given for R.sup.C1, ##STR00495## on each appearance, independently of one another, are ##STR00496## L.sup.21 and L.sup.22 denote H or F, X.sup.2 denotes halogen, halogenated alkyl or alkoxy having 1 to 3 C atoms or halogenated alkenyl or alkenyloxy having 2 or 3 C atoms, m denotes 0, 1, 2 or 3, R.sup.3 has one of the meanings given for R.sup.C1, ##STR00497## on each appearance, independently of one another, are ##STR00498## L.sup.31 and L.sup.32, independently of one another, denote H or F, X.sup.3 denotes halogen, halogenated alkyl or alkoxy having 1 to 3 C atoms or halogenated alkenyl or alkenyloxy having 2 or 3 C atoms, F, Cl, OCF.sub.3, OCHF.sub.2, OCH.sub.2CF.sub.3, OCHCF.sub.2, OCHCH.sub.2 or CF.sub.3, Z.sup.3 denotes CH.sub.2CH.sub.2, CF.sub.2CF.sub.2, COO, trans-CHCH, trans-CFCF, CH.sub.2O or a single bond, and n denotes 0, 1, 2 or 3, wherein the respective rings, optionally may each be substituted by one or two alkyl groups.

3. The medium according to claim 1, further comprising one or more dielectrically neutral compounds selected from the group consisting of compounds of formulae IV and V: ##STR00499## in which R.sup.41 and R.sup.42, independently of one another, have the meaning of R.sup.C1, ##STR00500## independently of one another and, if ##STR00501## occurs twice, also these independently of one another, denote ##STR00502## Z.sup.41 and Z.sup.42, independently of one another and, if Z.sup.41 occurs twice, also these independently of one another, denote CH.sub.2CH.sub.2, COO, trans-CHCH, trans-CFCF, CH.sub.2O, CF.sub.2O, CC or a single bond, p denotes 0, 1 or 2, R.sup.51 and R.sup.52, independently of one another, have one of the meanings given hereinabove for R.sup.41 and R.sup.42, ##STR00503## if present, each, independently of one another, denote ##STR00504## Z.sup.51 to Z.sup.53 each, independently of one another, denote CH.sub.2CH.sub.2, CH.sub.2O, CHCH, CC, COO or a single bond, and i and j each, independently of one another, denote 0 or 1, wherein the respective rings optionally may each be substituted by one or two alkyl groups.

4. The medium according to claim 1, comprising one or more compounds of formula B, ##STR00505## in which ##STR00506## denotes ##STR00507## ##STR00508## denotes ##STR00509## n denotes 1 or 2, R.sup.1 has one of the meanings given for R.sup.C1, and X.sup.1 denotes F, Cl, fluorinated alkyl, fluorinated alkenyl, fluorinated alkoxy or fluorinated alkenyloxyl.

5. The medium according to claim 1, further comprising one or more compounds of formula I: ##STR00510## in which ##STR00511## denotes ##STR00512## ##STR00513## denotes ##STR00514## n denotes 0 or 1, R.sup.11 and R.sup.12 independently of each other have one of the meanings given for R.sup.C1, or R.sup.11 alternatively denotes R.sup.1 and R.sup.12 alternatively denotes X.sup.1, R.sup.1 has one of the meanings given for R.sup.C1, and X.sup.1 denotes F, Cl, fluorinated alkyl, fluorinated alkenyl, fluorinated alkoxy or fluorinated alkenyloxy, from which the compounds of formulae B, VII and IX are excluded, and wherein the respective rings, optionally may each be substituted by one or two alkyl groups.

6. The medium according to claim 1, further comprising one or more compounds selected from the group of compounds of formulae VI to IX: ##STR00515## wherein R.sup.61 has one of the meanings given for R.sup.C1, R.sup.62 has one of the meanings given for R.sup.C1, and l denotes 0 or 1, R.sup.71 has one of the meanings given for R.sup.C1, R.sup.72 has one of the meanings given for R.sup.C1, ##STR00516## denotes ##STR00517## R.sup.81 has one of the meanings given for R.sup.C1, R.sup.82 has one of the meanings given for R.sup.C1, ##STR00518## A denotes ##STR00519## Z.sup.8 denotes (CO)O, CH.sub.2O, CF.sub.2O or CH.sub.2CH.sub.2, o denotes 0 or 1, R.sup.91 and R.sup.92 independently of one another have the meaning given for R.sup.71 herein above, ##STR00520## denotes ##STR00521## p and q independently of each other denote 0 or 1, and wherein the respective rings optionally may each be substituted by one or two alkyl groups, and the compounds of formula VII are excluded from the compounds of formula IX.

7. The medium according to claim 1, having a total concentration of the compounds of formula B in the medium as a whole of 1% or more to 60% or less.

8. The medium according to claim 1, wherein it additionally comprises one or more chiral compounds and/or one or more stabilizers.

9. An electro-optical display or electro-optical component, comprising a liquid-crystalline medium according to claim 1.

10. A display according to claim 9, wherein it is based on the IPS- or FFS mode.

11. A display according to claim 9, wherein it contains an active-matrix addressing device.

12. A method of using a medium according to claim 1, comprising incorporating the medium in an electro-optical display or in an electro-optical component.

13. A process for the preparation of a liquid-crystalline medium according to claim 1, comprising mixing one or more compounds of formula C with one or more additional mesogenic compounds and optionally one or more additives.

14. The liquid-crystalline medium according to claim 1, wherein one or more CH.sub.2 groups in R.sup.C1 and R.sup.C2 may each be replaced, independently of one another, by 1,2-cyclopropyl, 1,3-cyclopentyl, 1,3-cyclopentenylene, or alkyl, alkenyl, alkenyloxy, alkoxyalkyl, or fluorinated alkenyl having 2 to 7 C atoms.

15. The liquid-crystalline medium according to claim 14, wherein R.sup.C1 and R.sup.C2 are independently of one another alkyl or alkenyl having 2 to 7 C atoms, in which one CH.sub.2 group may be replaced by cyclopropylene, 1,3-cyclobutylene, 1,3-cyclopentylene, or 1,3-cyclopentenylene.

16. The liquid-crystalline medium according to claim 15, wherein R.sup.C1 and R.sup.C2 are independently of one another alkyl or alkenyl having 2 to 7 C atoms, in which one CH.sub.2 group may be replaced by cyclopropylene or 1,3-cyclopentenylene.

17. The liquid-crystalline medium according to claim 1, wherein R.sup.1 denotes an alkyl radical having 1 to 7 C atoms, wherein one or more CH.sub.2 groups in this radical may each be replaced, independently of one another, by CHCH, CC, CF.sub.2O, OCF.sub.2, O, (CO)O, O(CO), cyclopropylene, 1,3-cyclobutylene, 1,3-cyclopentylene, or 1,3-cyclopentenylene.

18. The liquid-crystalline medium according to claim 2, wherein R.sup.2 and R.sup.3 independently of one another denote alkyl, alkoxy, fluorinated alkyl or fluorinated alkoxy having 1 to 7 C atoms, alkenyl, alkenyloxy, alkoxyalkyl, or fluorinated alkenyl having 2 to 7 C atoms.

19. The liquid-crystalline medium according to claim 4, wherein R.sup.1 denotes alkyl, alkoxy, fluorinated alkyl, fluorinated alkoxy, alkenyl, alkenyloxy, alkoxyalkyl, or fluorinated alkenyl.

20. The liquid-crystalline medium according to claim 5, wherein R.sup.11 and R.sup.12 independently of each other denote alkyl, alkoxy, fluorinated alkyl having 1 to 7 C atoms, wherein one CH.sub.2 group may be replaced by a 1,2-cyclopropyl group, by a 1,3-cyclopentyl group or by a 1,3-cyclopentenylene group, or fluorinated alkoxy, alkenyl, alkenyloxy, alkoxyalkyl or fluorinated alkenyl having 2 to 7 C atoms, and R.sup.1 denotes alkyl, alkoxy, fluorinated alkyl or fluorinated alkoxy, wherein one CH.sub.2 group may be replaced by a 1,2-cyclopropyl group, by a 1,3-cyclopentyl group or by a 1,3-cyclopentenylene group, alkenyl, alkenyloxy, alkoxyalkyl, or fluorinated alkenyl having 2 to 7 C atoms.

Description

[0035] The invention has the object of providing MLC displays, not only for monitor and TV applications, but also for mobile applications such as e.g. telephones and navigation systems, which are based on the ECB, IPS or FFS effect, do not have the disadvantages indicated above, or only do so to a lesser extent, and at the same time have very high specific resistance values. In particular, it must be ensured for mobile telephones and navigation systems that they also work at extremely high and extremely low temperatures.

[0036] Surprisingly, it has been found that it is possible to achieve liquid-crystal displays which have, in particular in IPS and FFS displays, a low threshold voltage with short response times, a sufficiently broad nematic phase, favourable birefringence (n) and, at the same time, a high transmission, high contrast, good stability to decomposition by heating and by UV exposure, and a stable, high VHR if use is made in these display elements of nematic liquid-crystal media, which comprise at least one compound, preferably two or more compounds of formula C, preferably selected from the group of the compounds of the sub-formulae C-1 to C-4, particularly preferably the sub-formula C-1 and/or C-3, more preferably of formula C-3, and preferably additionally one or more compounds, preferably two or more compounds of formula B, preferably selected from the group of the compounds of the formulae B-1 to B-4, preferably both of formulae B-2 and B-4.

[0037] In a preferred embodiment the liquid-crystalline media comprise one or more compounds of formula I, preferably selected from the group of the compounds of the sub-formulae I-1 and I-2, particularly preferably one or more compounds both of formula I-1 and of formula I-2.

[0038] In a further preferred embodiment the liquid-crystalline media comprise one or more compounds selected from the group of the compounds of formulae II and III, the former preferably of formula II-1 and/or II-2, and/or one or more compounds, preferably two or more compounds selected from the group of formulae IV and/or V and, preferably, one or more compounds selected from the group of formulae VI to IX (all formulae as defined herein below).

[0039] Media of this type can be used, in particular, for electro-optical displays having active-matrix addressing for IPS- or FFS displays.

[0040] The media according to the present invention preferably additionally comprise a one or more compounds selected from the group of compounds of formulae II and III, preferably one or more compounds of formula II, more preferably in addition one or more compounds of formula III and, most preferably, additionally one or more compounds selected from the group of the compounds of formulae IV and V and, again preferably, one or more compounds selected from the group of compounds of formulae VI to IX (all formulae as defined below).

[0041] The mixtures according to the invention exhibit very broad nematic phase ranges with clearing points 70 C., very favourable values for the capacitive threshold, relatively high values for the holding ratio and at the same time good low-temperature stabilities at 20 C. and 30 C., as well as very low rotational viscosities. The mixtures according to the invention are furthermore distinguished by a good ratio of clearing point and rotational viscosity and by a relatively high positive dielectric anisotropy.

[0042] Now, it has been found surprisingly that LCDs of the FFS type using liquid crystals with positive dielectric anisotropy may be realised using specially selected liquid crystalline media. These media are characterised by a particular combination of physical properties. Most decisive amongst these are their dielectric properties and here a high average dielectric constant (.sub.av.), a high dielectric constant perpendicular to the director of the liquid crystal molecules (.sub.) and, in particular, the relatively high ratio of these latter two values: (.sub./).

[0043] Preferably the liquid-crystalline media according to the present invention, on the one hand, have a value of the dielectric anisotropy of 1.5 or more, preferably of 2.5 or more. At the other hand, they preferably have a dielectric anisotropy of 26 or less, preferably of 15 or less and most preferably of 10 or less.

[0044] The liquid crystalline media according to the present invention in a preferred embodiment have a positive dielectric anisotropy, preferably in the range from 1.5 or more to 20.0 or less, more preferably in the range from 2.0 or more to 15.0 or less and, most preferably in the range from 2.0 or more to 12.0.

[0045] The liquid crystalline medium of the present invention preferably exhibits a nematic phase and comprises [0046] a) one or more compounds of formula C, preferably in a concentration in the range from 1% to 40%, more preferably in the range from 2% to 30%, particularly preferably in the range from 3% to 20%,

##STR00002## [0047] in which

##STR00003## denotes

##STR00004## [0048] preferably

##STR00005## [0049] denotes, in each occurrence independently of one another,

##STR00006## [0050] preferably

##STR00007## [0051] most preferably

##STR00008## [0052] R.sup.C1 and R.sup.C2, independently of one another, denote, an alkyl radical having 1 to 15 C atoms, wherein one or more CH.sub.2 groups, preferably one CH.sub.2 group, in these radicals may each be replaced, independently of one another, by CHCH, CC, CF.sub.2O, OCF.sub.2, O, (CO)O, O(CO), cyclo-propylene, 1,3-cyclobutylene, 1,3-cyclopentylene, 1,3-cyclo-pentenylene, preferably by cyclopropylene or 1,3-cyclopentylene, preferably one CH.sub.2 group may be replaced by a 1,2-cyclopropylene group, by a 1,3-cyclopentyl group or by a 1,3-cyclopentenylene group, alkenyl, alkenyloxy, alkoxyalkyl or fluorinated alkenyl having 2 to 7 C atoms and preferably alkyl or alkenyl, wherein one CH.sub.2 group may be replaced by cyclopropylene, 1,3-cyclobutylene, 1,3-cyclopentylene, 1,3-cyclopentenylene, preferably by cyclopropylene or 1,3-cyclopentenylene, in such a way that 0 atoms are not linked directly to one another, and in which one or more H atoms may be replaced by halogen, and [0053] wherein the respective rings, and preferably the phenylene rings, optionally may each be substituted by one or two alkyl groups, preferably by methyl and/or ethyl groups, preferably by one methyl group, and [0054] b) optionally, preferably obligatorily, one or more compounds of formula B, preferably selected from the group of compounds of formulae B-1 to B-4, preferably in a concentration in the range from 1% to 60%, more preferably in the range from 2% to 40%, particularly preferably in the range from 3% to 35%, and most preferably in the range from 3% to 20%,

##STR00009## [0055] in which

##STR00010## denotes

##STR00011## denotes, in each occurrence independently of one another,

##STR00012## [0056] preferably

##STR00013## [0057] most preferably

##STR00014## [0058] n denotes 1 or 2, preferably 1, [0059] R.sup.1 has one of the meanings given for R.sup.C1 and preferably denotes an alkyl, radical having 1 to 7 C atoms, wherein one or more CH.sub.2 groups, preferably one CH.sub.2 group, in this radical may each be replaced, independently of one another, by CHCH, CC, CF.sub.2O, OCF.sub.2, O, (CO)O, O(CO), cyclo-propylene, 1,3-cyclobutylene, 1,3-cyclopentylene, 1,3-cyclo-pentenylene, preferably by cyclopropylene or 1,3-cyclopentylene, preferably one CH.sub.2 group may be replaced by a 1,2-cyclopropylene group, by a 1,3-cyclopentylene group or by a 1,3-cyclopentenylene group, alkenyl, alkenyloxy, alkoxyalkyl or fluorinated alkenyl having 2 to 7 C atoms and preferably alkyl or alkenyl, wherein one CH.sub.2 group may be replaced by cyclo-propylene, 1,3-cyclobutylene, 1,3-cyclopentylene, 1,3-cyclo-pentenylene, preferably by cyclopropylene or 1,3-cyclopentenylene, in such a way that 0 atoms are not linked directly to one another, and in which one or more H atoms may be replaced by halogen, and [0060] X.sup.1 denotes F, Cl, fluorinated alkyl, fluorinated alkenyl, fluorinated alkoxy or fluorinated alkenyloxy, the latter four groups preferably having 1 to 4 C atoms, more preferably F, Cl, CF.sub.3 or OCF.sub.3, and [0061] wherein the respective rings, and preferably the phenylene rings, optionally may each be substituted by one or two alkyl groups, preferably by methyl and/or ethyl groups, preferably by one methyl group, and [0062] and one or more additional compounds, preferably selected from the groups of compounds according to the following conditions c) to f) [0063] c) one or more, preferably dielectrically positive, compounds selected from the group of compounds of formulae II and III, preferably of compounds having a dielectric anisotropy of greater than 3 each, preferably one or more compounds of formula II:

##STR00015## [0064] in which [0065] R.sup.2 has one of the meanings given for R.sup.C1 and preferably denotes alkyl, alkoxy, fluorinated alkyl or fluorinated alkoxy having 1 to 7 C atoms, alkenyl, alkenyloxy, alkoxyalkyl or fluorinated alkenyl having 2 to 7 C atoms and preferably alkyl or alkenyl,

##STR00016## [0066] on each appearance, independently of one another, denote

##STR00017## [0067] L.sup.21 and L.sup.22 denote H or F, preferably L.sup.21 denotes F, [0068] X.sup.2 denotes halogen, halogenated alkyl or alkoxy having 1 to 3 C atoms or halogenated alkenyl or alkenyloxy having 2 or 3 C atoms, preferably F, Cl, OCF.sub.3, OCH.sub.2CF.sub.3, OCHCH.sub.2, OCHCF.sub.2 or CF.sub.3, very preferably F, Cl, OCHCF.sub.2 or OCF.sub.3, [0069] m denotes 0, 1, 2 or 3, preferably 1 or 2 and particularly preferably 2, [0070] R.sup.3 has one of the meanings given for R.sup.C1 and preferably denotes alkyl, alkoxy, fluorinated alkyl or fluorinated alkoxy having 1 to 7 C atoms, alkenyl, alkenyloxy, alkoxyalkyl or fluorinated alkenyl having 2 to 7 C atoms and preferably n-alkyl, cyclopropyl, cyclopentyl or alkenyl,

##STR00018## [0071] on each appearance, independently of one another, are

##STR00019## [0072] L.sup.31 and L.sup.32, independently of one another, denote H or F, preferably L.sup.31 denotes F, [0073] X.sup.3 denotes halogen, halogenated alkyl or alkoxy having 1 to 3 C atoms or halogenated alkenyl or alkenyloxy having 2 or 3 C atoms, F, Cl, OCF.sub.3, OCHF.sub.2, OCH.sub.2CF.sub.3, OCHCF.sub.2, OCHCH.sub.2 or CF.sub.3, very preferably F, Cl, OCHCF.sub.2, OCHF.sub.2 or OCF.sub.3, [0074] Z.sup.3 denotes CH.sub.2CH.sub.2, CF.sub.2CF.sub.2, COO, trans-CHCH, trans-CFCF, CH.sub.2O or a single bond, preferably CH.sub.2CH.sub.2, COO, trans-CHCH or a single bond and very preferably COO, trans-CHCH or a single bond, and [0075] n denotes 0, 1, 2 or 3, preferably 1, 2 or 3 and particularly preferably 1, [0076] wherein the respective rings, and preferably the phenylene rings, optionally may each be substituted by one or two alkyl groups, preferably by methyl and/or ethyl groups, preferably by one methyl group, [0077] and, wherein especially the ring

##STR00020## may be replaced by

##STR00021## [0078] and especially the ring

##STR00022## may be replaced by

##STR00023## [0079] d) optionally, preferably obligatory, one or more dielectrically neutral compounds selected from the group of formulae IV and V:

##STR00024## [0080] in which [0081] R.sup.41 and R.sup.42, independently of one another, have one of the meanings given for R.sup.C1 and preferably R.sup.41 denotes alkyl and R.sup.42 denotes alkyl or alkoxy or R.sup.41 denotes alkenyl and R.sup.42 denotes alkyl,

##STR00025## [0082] independently of one another and, if

##STR00026## occurs twice, [0083] also these independently of one another, denote

##STR00027## [0084] preferably one or more of

##STR00028## [0085] denotes or denote,

##STR00029## [0086] Z.sup.41 and Z.sup.42, independently of one another and, if Z.sup.41 occurs twice, also these independently of one another, [0087] denote CH.sub.2CH.sub.2, COO, trans CHCH, trans CFCF, CH.sub.2O, CF.sub.2O, CC or a single bond, preferably one or more thereof denotes/denote a single bond, and [0088] p denotes 0, 1 or 2, preferably 0 or 1, and [0089] R.sup.51 and R.sup.52, independently of one another, have one of the meanings given for R.sup.C1 and preferably R.sup.41 and R.sup.42 denote alkyl having 1 to 7 C atoms, preferably n-alkyl, particularly preferably n-alkyl having 1 to 5 C atoms, alkoxy having 1 to 7 C atoms, preferably n-alkoxy, particularly preferably n-alkoxy having 2 to 5 C atoms, alkoxyalkyl, alkenyl or alkenyloxy having 2 to 7 C atoms, preferably having 2 to 4 C atoms, preferably alkenyloxy,

##STR00030## [0090] if present, each, independently of one another, denote

##STR00031## [0091] preferably

##STR00032## [0092] preferably

##STR00033## denotes

##STR00034## [0093] and, if present,

##STR00035## preferably denotes

##STR00036## [0094] Z.sup.51 to Z.sup.53 each, independently of one another, denote CH.sub.2CH.sub.2, CH.sub.2O, CHCH, CC, COO or a single bond, preferably CH.sub.2CH.sub.2, CH.sub.2O or a single bond and particularly preferably a single bond, [0095] i and j each, independently of one another, denote 0 or 1, [0096] (i+j) preferably denotes 0, 1 or 2, more preferably 0 or 1 and, most preferably, 1, [0097] wherein the respective rings, and preferably the phenylene rings, optionally may each be substituted by one or two alkyl groups, preferably by methyl and/or ethyl groups, preferably by one methyl group, and [0098] e) again optionally, preferably obligatory, either alternatively or additionally, one or more dielectrically negative compounds selected from the group of formulae VI to IX:

##STR00037## [0099] wherein [0100] R.sup.61 has one of the meanings given for R.sup.C1 and preferably denotes an unsubstituted alkyl radical having 1 to 7 C atoms, preferably a straight-chain alkyl radical, more preferably an n-alkyl radical, most preferably propyl or pentyl, an unsubstituted alkenyl radical having 2 to 7 C atoms, preferably a straight-chain alkenyl radical, particularly preferably having 2 to 5 C atoms, an unsubstituted alkoxy radical having 1 to 6 C atoms or an unsubstituted alkenyloxy radical having 2 to 6 C atoms, [0101] R.sup.62 has one of the meanings given for R.sup.C1 and preferably denotes an unsubstituted alkyl radical having 1 to 7 C atoms, an unsubstituted alkoxy radical having 1 to 6 C atoms or an unsubstituted alkenyloxy radical having 2 to 6 C atoms, and [0102] l denotes 0 or 1, [0103] R.sup.71 has one of the meanings given for R.sup.C1 and preferably denotes an unsubstituted alkyl radical having 1 to 7 C atoms, preferably a straight-chain alkyl radical, more preferably an n-alkyl radical, most preferably propyl or pentyl, or an unsubstituted alkenyl radical having 2 to 7 C atoms, preferably a straight-chain alkenyl radical, particularly preferably having 2 to 5 C atoms, [0104] R.sup.72 has one of the meanings given for R.sup.C1 and preferably denotes an unsubstituted alkyl radical having 1 to 7 C atoms, preferably having 2 to 5 C atoms, an unsubstituted alkoxy radical having 1 to 6 C atoms, preferably having 1, 2, 3 or 4 C atoms, or an unsubstituted alkenyloxy radical having 2 to 6 C atoms, preferably having 2, 3 or 4 C atoms, and

##STR00038## denotes

##STR00039## [0105] R.sup.81 has one of the meanings given for R.sup.C1 and preferably denotes an unsubstituted alkyl radical having 1 to 7 C atoms, preferably a straight-chain alkyl radical, more preferably an n-alkyl radical, most preferably propyl or pentyl, or an unsubstituted alkenyl radical having 2 to 7 C atoms, preferably a straight-chain alkenyl radical, particularly preferably having 2 to 5 C atoms, [0106] R.sup.82 has one of the meanings given for R.sup.C1 and preferably denotes an unsubstituted alkyl radical having 1 to 7 C atoms, preferably having 2 to 5 C atoms, an unsubstituted alkoxy radical having 1 to 6 C atoms, preferably having 1, 2, 3 or 4 C atoms, or an unsubstituted alkenyloxy radical having 2 to 6 C atoms, preferably having 2, 3 or 4 C atoms,

##STR00040## denotes

##STR00041## [0107] preferably

##STR00042## [0108] more preferably

##STR00043## [0109] Z.sup.8 denotes (CO)O, CH.sub.2O, CF.sub.2O or CH.sub.2CH.sub.2, preferably (CO)O or CH.sub.2O, and [0110] o denotes 0 or 1, [0111] R.sup.91 and R.sup.92 independently of one another have the meaning given for R.sup.C1 above, and [0112] R.sup.91 preferably denotes an alkyl radical having 2 to 5 C atoms, preferably having 3 to 5 C atoms, [0113] R.sup.92 preferably denotes an alkyl or alkoxy radical having 2 to 5 C atoms, more preferably an alkoxy radical having 2 to 4 C atoms, or an alkenyloxy radical having 2 to 4 C atoms.

##STR00044## denotes

##STR00045## [0114] p and q independently of each other denote 0 or 1, and [0115] (p+q) preferably denotes 0 or 1, [0116] in case

##STR00046## [0117] denote

##STR00047## [0118] alternatively, preferably p=q=1, [0119] wherein the respective rings, and preferably the phenylene rings, optionally may each be substituted by one or two alkyl groups, preferably by methyl and/or ethyl groups, preferably by one methyl group, and wherein the compounds of formula VII are excluded from the compounds of formula IX, [0120] and wherein in formulae VI to IX especially the rings

##STR00048## alternatively be replaced by

##STR00049## [0121] f) again optionally, preferably obligatory, either alternatively or additionally, one or more compounds of formula I:

##STR00050## [0122] in which

##STR00051## denotes

##STR00052##

##STR00053## denotes

##STR00054## [0123] preferably

##STR00055## [0124] n denotes 0 or 1, [0125] R.sup.11 and R.sup.12 independently of each other denote alkyl, alkoxy, fluorinated alkyl or fluorinated alkoxy, preferably having 1 to 7 C atoms, wherein one CH.sub.2 group may be replaced by a 1,2-cyclopropyl group, by a 1,3-cyclopentyl group or by a 1,3-cyclopentenylene group, alkenyl, alkenyloxy, alkoxyalkyl or fluorinated alkenyl having 2 to 7 C atoms and preferably alkyl, alkoxy, alkenyl or alkenyloxy, most preferably alkyl, alkoxy or alkenyloxy, and R.sup.11 alternatively denotes R.sup.1 and R.sup.12 alternatively denotes X.sup.1, [0126] R.sup.1 denotes alkyl, alkoxy, fluorinated alkyl or fluorinated alkoxy, preferably having 1 to 7 C atoms, wherein one CH.sub.2 group may be replaced by a 1,2-cyclopropyl group, by a 1,3-cyclopentyl group or by a 1,3-cyclopentenylene group, alkenyl, alkenyloxy, alkoxyalkyl or fluorinated alkenyl, preferably having 2 to 7 C atoms and preferably alkyl or alkenyl, and [0127] X.sup.1 denotes F, Cl, fluorinated alkyl, fluorinated alkenyl, fluorinated alkoxy or fluorinated alkenyloxy, the latter four groups preferably having 1 to 4 C atoms, more preferably F, Cl, CF.sub.3 or OCF.sub.3, [0128] wherein the respective rings, and preferably the phenylene rings, optionally may each be substituted by one or two alkyl groups, preferably by methyl and/or ethyl groups, preferably by one methyl group, [0129] from which the compounds of formulae B, VII and IX are excluded.

[0130] Throughout this invention 1,3-cyclopentenylene is a moiety selected from the group of the formulae

##STR00056## [0131] preferably

##STR00057## [0132] most preferably

##STR00058##

[0133] The liquid crystalline media of the present invention preferably exhibit a nematic phase and preferably are nematic at ambient temperature of 20 to 25 C.

[0134] Examples of preferably used compounds of formula C are those selected from the group of compounds of the following formulae.

[0135] Preferably the media according to the present invention comprise one or more compounds of formula C selected from the group of compounds of formulae C-1 to C-4, preferably of formula C-1 and/or of formula C-3, and most preferably of formula C-3

##STR00059## [0136] wherein the parameters have the respective meanings given above, including the respective preferred meanings.

[0137] Especially preferred are the compounds wherein [0138] R.sup.C1 denotes an alkyl radical having 1 to 15 C atoms, more preferably 2 to 7 C atoms and most preferably 2, 3 or 4 C atoms, and [0139] R.sup.C2 denotes an alkyloxy radical having 1 to 15 C atoms, more preferably 1 to 7 C atoms and most preferably 3, 4 or 5 C atoms.

[0140] Particularly preferred compounds used are compounds of formulae C-1 and C-3, most preferred those of formula C-3.

[0141] In an embodiment the media according to the present invention comprise one or more compounds selected from the group of compounds of formulae C-5 to C-16

##STR00060## ##STR00061## [0142] wherein the parameters have the respective meanings given above, including the respective preferred meanings.

[0143] The liquid-crystalline media in accordance with the present invention preferably have a nematic phase.

[0144] Throughout this invention and especially for the definition of R.sup.C1 and R.sup.C2 alkyl means an alkyl group, which may be straight-chain or branched. Each of these radicals is preferably straight-chain and preferably has 1, 2, 3, 4, 5, 6, 7 or 8 C atoms and is accordingly preferably methyl, ethyl, n-propyl, n-butyl, n-pentyl, n-hexyl or n-heptyl.

[0145] In case alkyl means a branched alkyl group it preferably means 2-alkyl, 2-methylalkyl or 2-(2-ethyl)-alkyl, preferably 2-butyl (=1-methylpropyl), 2-methylbutyl, 2-methylpentyl, 3-methylpentyl, 2-ethylhexyl, 2-propylpentyl, in particular 2-methylbutyl, 2-methylbutoxy 4-methylhexyl, 2-hexyl, 2-octyl, 2-nonyl, 2-decyl and 2-dodecyl. Most preferred of these groups are 2-hexyl and 2-octyl.

[0146] Respective branched groups, especially for R.sup.C1 and R.sup.C2, which lead to chiral compounds are also called chiral groups in this application. Particularly preferred chiral groups are 2-alkyl, 2-alkoxy, 2-methylalkyl, 2-methylalkoxy, 2-fluoroalkyl, 2-fluoroalkoxy, 2-(2-ethin)-alkyl, 2-(2-ethin)-alkoxy, 1,1,1-trifluoro-2-alkyl and 1,1,1-trifluoro-2-alkoxy.

[0147] Particularly preferred chiral groups are 2-butyl (=1-methylpropyl), 2-methylbutyl, 2-methylpentyl, 3-methylpentyl, 2-ethylhexyl, 2-propylpentyl, in particular 2-methylbutyl, 2-methylbutoxy, 2-methylpentoxy, 3-methylpentoxy, 2-ethylhexoxy, 1-methylhexoxy, 2-octyloxy, 2-oxa-3-methylbutyl, 3-oxa-4-methylpentyl, 4-methylhexyl, 2-hexyl, 2-octyl, 2-nonyl, 2-decyl, 2-dodecyl, 6-methoxyoctoxy, 6-methyloctoxy, 6-methyloctanoyloxy, 5-methylheptyloxycarbonyl, 2-methylbutyryloxy, 3-methylvaleroyloxy, 4-methylhexanoyloxy, 2-chlorpropionyloxy, 2-chloro-3-methylbutyryloxy, 2-chloro-4-methylvaleryloxy, 2-chloro-3-methylvaleryloxy, 2-methyl-3-oxapentyl, 2-methyl-3-oxahexyl, 1-methoxypropyl-2-oxy, 1-ethoxypropyl-2-oxy, 1-propoxypropyl-2-oxy, 1-butoxypropyl-2-oxy, 2-fluorooctyloxy, 2-fluorodecyloxy, 1,1,1-trifluoro-2-octyloxy, 1,1,1-trifluoro-2-octyl, 2-fluoromethyloctyloxy for example. Very preferred are 2-hexyl, 2-octyl, 2-octyloxy, 1,1,1-trifluoro-2-hexyl, 1,1,1-trifluoro-2-octyl and 1,1,1-trifluoro-2-octyloxy.

[0148] Throughout this invention and especially for the definition of R.sup.D alkenyl means an alkenyl group, which may be straight-chain or branched and preferably is straight chain and preferably has 2, 3, 4, 5, 6 or 7 or 8 C atoms. Preferably it is vinyl, 1-E-alkenyl or 3-E-alkenyl, most preferably it is vinyl, 1-E-propenyl, 1-E-butenyl, 1-E-pentenyl, 3-butenyl or 3-E-pentenyl.

[0149] The invention furthermore relates to a liquid-crystal display containing a liquid-crystalline medium according to the invention, in particular an IPS or FFS display, particularly preferably a FFS or SG-FFS display.

[0150] The invention furthermore relates to a liquid-crystal display of the IPS or FFS type comprising a liquid-crystal cell consisting of two substrates, where at least one substrate is transparent to light and at least one substrate has an electrode layer, and a layer, located between the substrates, of a liquid-crystalline medium comprising a polymerised component and a low-molecular-weight component, where the polymerised component is obtainable by polymerisation of one or more polymerisable compounds in the liquid-crystalline medium between the substrates of the liquid-crystal cell, preferably with application of an electrical voltage and where the low-molecular-weight component is a liquid-crystal mixture according to the invention as described above and below.

[0151] The displays in accordance with the present invention are preferably addressed by an active matrix (active matrix LCDs, AMDs for short), preferably by a matrix of thin-film transistors (TFTs). However, the liquid crystals according to the invention can also be used in an advantageous manner in displays having other known addressing means.

[0152] The invention furthermore relates to a process for the preparation of a liquid-crystalline medium according to the invention by mixing one or more compounds of formula C, preferably selected from the group of compounds of formulae C-1 to C-4, most preferably selected from the group of compounds of formulae C-1 and C-3, with one or more low-molecular-weight liquid-crystalline compounds, or a liquid-crystal mixture and optionally with further liquid-crystalline compounds and/or additives.

[0153] The following meanings apply above and below:

[0154] The term FFS is, unless indicated otherwise, used to represent FFS and SG-FFS displays.

[0155] The term mesogenic group is known to the person skilled in the art and is described in the literature, and denotes a group which, due to the anisotropy of its attracting and repelling interactions, essentially contributes to causing a liquid-crystalline (LC) phase in low-molecular-weight or polymeric substances. Compounds containing mesogenic groups (mesogenic compounds) do not necessarily have to have a liquid-crystalline phase themselves. It is also possible for mesogenic compounds to exhibit liquid-crystalline phase behaviour only after mixing with other compounds and/or after polymerisation. Typical mesogenic groups are, for example, rigid rod- or disc-shaped units. An overview of the terms and definitions used in connection with mesogenic or liquid-crystalline compounds is given in Pure Appl. Chem. 73(5), 888 (2001) and C. Tschierske, G. Pelzl, S. Diele, Angew. Chem. 2004, 116, 6340-6368.

[0156] The term spacer group or spacer for short, also referred to as Sp above and below, is known to the person skilled in the art and is described in the literature, see, for example, Pure Appl. Chem. 73(5), 888 (2001) and C. Tschierske, G. Pelzl, S. Diele, Angew. Chem. 2004, 116, 6340-6368. Unless indicated otherwise, the term spacer group or spacer above and below denotes a flexible group which connects the mesogenic group and the polymerisable group(s) to one another in a polymerisable mesogenic compound.

[0157] For the purposes of this invention, the term liquid-crystalline medium is intended to denote a medium which comprises a liquid-crystal mixture and one or more polymerisable compounds (such as, for example, reactive mesogens). The term liquid-crystal mixture (or host mixture) is intended to denote a liquid-crystalline mixture which consists exclusively of unpoly-merisable, low-molecular-weight compounds, preferably of two or more liquid-crystalline compounds and optionally further additives, such as, for example, chiral dopants or stabilisers.

[0158] Particular preference is given to liquid-crystal mixtures and liquid-crystalline media which have a nematic phase, in particular at room temperature.

[0159] In a preferred embodiment of the present invention, the liquid-crystal medium comprises one or more, preferably dielectrically positive, compounds, preferably having a dielectric anisotropy of greater than 3, selected from the group of the compounds of the formulae II-1 and II-2:

##STR00062## [0160] in which the parameters have the respective meanings indicated above under formula II, and L.sup.23 and L.sup.24, independently of one another, denote H or F, preferably L.sup.23 denotes F, and

##STR00063## has one of the meanings given for

##STR00064## [0161] and, in the case of formulae II-1 and II-2, X.sup.2 preferably denotes F or OCF.sub.3, particularly preferably F, and, in the case of formula II-2,

##STR00065## and

##STR00066## independently of one another, preferably denote

##STR00067## [0162] and wherein the respective rings, and preferably the phenylene rings, optionally may each be substituted by one or two alkyl groups, preferably by methyl and/or ethyl groups, preferably by one methyl group, and wherein especially the ring

##STR00068## may be replaced by

##STR00069## [0163] and/or selected from the group of the compounds of the formulae III-1 and III-2:

##STR00070## [0164] in which the parameters have the meanings given under formula III, [0165] and wherein the respective rings, and preferably the phenylene rings, optionally may each be substituted by one or two alkyl groups, preferably by methyl and/or ethyl groups, preferably by one methyl group, and wherein especially the ring

##STR00071## may be replaced by

##STR00072## [0166] and the media in accordance with the present invention may comprise, alternatively or in addition to the compounds of the formulae III-1 and/or III-2, one or more compounds of the formula III-3

##STR00073## [0167] in which the parameters have the respective meanings indicated above, and the parameters L.sup.31 and L.sup.32, independently of one another and of the other parameters, denote H or F [0168] and wherein the respective rings, and preferably the phenylene rings, optionally may each be substituted by one or two alkyl groups, preferably by methyl and/or ethyl groups, preferably by one methyl group, and, wherein especially the ring

##STR00074## may be replaced by

##STR00075##

[0169] The liquid-crystal medium preferably comprises compounds selected from the group of the compounds of the formulae II-1 and II-2 in which L.sup.21 and L.sup.22 and/or L.sup.23 and L.sup.24 both denote F.

[0170] In a preferred embodiment, the liquid-crystal medium comprises compounds selected from the group of the compounds of the formulae II-1 and II-2 in which L.sup.21, L.sup.22, L.sup.23 and L.sup.24 all denote F.

[0171] The liquid-crystal medium preferably comprises one or more compounds of the formula II-1. The compounds of the formula II-1 are preferably selected from the group of the compounds of the formulae II-1a to II-1e, preferably one or more compounds of formulae II-1a and/or II-1b and/or II-1d, preferably of formula II-1a and/or II-1d or II-1b and/or II-1d, most preferably of formula II-1d:

##STR00076## [0172] in which the parameters have the respective meanings indicated above, and L.sup.25 and L.sup.26, independently of one another and of the other parameters, denote H or F, and preferably [0173] in the formulae II-1a and II-1b, [0174] L.sup.21 and L.sup.22 both denote F, [0175] in the formulae II-1c and II-1d, [0176] L.sup.21 and L.sup.22 both denote F and/or L.sup.23 and L.sup.24 both denote F, and [0177] in formula II-1e, [0178] L.sup.21, L.sup.22 and L.sup.23 denote F [0179] and wherein the respective rings, and preferably the phenylene rings, optionally may each be substituted by one or two alkyl groups, preferably by methyl and/or ethyl groups, preferably by one methyl group, and wherein especially the ring

##STR00077## may be replaced by

##STR00078##

[0180] In an embodiment the medium comprises one or more compounds selected from the group of compounds of the following formulae:

##STR00079## [0181] in which R.sup.2 and X.sup.2 have the meanings given in formula II or one of the preferred meanings given above and below.

[0182] The liquid-crystal medium preferably comprises one or more compounds of the formula II-2, which are preferably selected from the group of the compounds of the formulae II-2a to II-2k, preferably one or more compounds each of formulae II-2a and/or II-2h and/or II-2j:

##STR00080## ##STR00081## [0183] in which the parameters have the respective meanings indicated above, and L.sup.25 to L.sup.28, independently of one another, denote H or F, preferably L.sup.27 and L.sup.28 both denote H, particularly preferably L.sup.26 denotes H, [0184] and wherein the respective rings, and preferably the phenylene rings, optionally may each be substituted by one or two alkyl groups, preferably by methyl and/or ethyl groups, preferably by one methyl group, and wherein especially the ring

##STR00082## may be replaced by

##STR00083##

[0185] The liquid-crystal medium preferably comprises compounds selected from the group of the compounds of the formulae II-2a to II-2k in which L.sup.21 and L.sup.22 both denote F and/or L.sup.23 and L.sup.24 both denote F.

[0186] In a preferred embodiment, the liquid-crystal medium comprises compounds selected from the group of the compounds of the formulae II-2a to II-2k in which L.sup.21, L.sup.22, L.sup.23 and L.sup.24 all denote F.

[0187] Especially preferred compounds of the formula II-2 are the compounds of the following formulae, particularly preferred of formulae II-2a-1 and/or II-2h-1 and/or II-2k-2:

##STR00084## ##STR00085## [0188] in which R.sup.2 and X.sup.2 have the meanings indicated above, and X.sup.2 preferably denotes F, [0189] and wherein the respective rings, and preferably the phenylene rings, optionally may each be substituted by one or two alkyl groups, preferably by methyl and/or ethyl groups, preferably by one methyl group, and wherein especially the ring

##STR00086## may be replaced by

##STR00087##

[0190] The liquid-crystal medium preferably comprises one or more compounds of the formula III-1. The compounds of the formula III-1 are preferably selected from the group of the compounds of the formulae III-1a to III-1j, preferably from formulae Ill-1c, Ill-1f, III-1g and III-1j:

##STR00088## ##STR00089## [0191] in which the parameters have the meanings given above and preferably in which the parameters have the respective preferred meanings indicated above, the parameters L.sup.33 and L.sup.34, independently of one another and of the other parameters, denote H or F and the parameters L.sup.35 and L.sup.36 independently of one another and of the other parameters, denote H or F, [0192] and wherein the respective rings, and preferably the phenylene rings, optionally may each be substituted by one or two alkyl groups, preferably by methyl and/or ethyl groups, preferably by one methyl group.

[0193] The liquid-crystal medium preferably comprises one or more compounds of the formula III-1c, which are preferably selected from the group of the compounds of the formulae III-1c-1 to III-1c-5, preferably of formulae III-1c-1 and/or III-1c-2, most preferably of formula III-1c-1:

##STR00090## [0194] in which R.sup.3 has the meaning indicated above and wherein the respective rings, and preferably the phenylene rings, optionally may each be substituted by one or two alkyl groups, preferably by methyl and/or ethyl groups, preferably by one methyl group.

[0195] The liquid-crystal medium preferably comprises one or more compounds of the formula III-1f, which are preferably selected from the group of the compounds of the formulae III-1f-1 to III-1f-6, preferably of formulae III-1f-1 and/or III-1f-2 and/or III-1f-3 and/or III-1f-6, more preferably of formula III-1f-3 and/or III-1f-6, more preferably of formula III-1f-6:

##STR00091## [0196] in which R.sup.3 has the meaning indicated above and wherein the respective rings, and preferably the phenylene rings, optionally may each be substituted by one or two alkyl groups, preferably by methyl and/or ethyl groups, preferably by one methyl group.

[0197] The liquid-crystal medium preferably comprises one or more compounds of the formula III-1g, which are preferably selected from the group of the compounds of the formulae III-1g-1 to III-1g-5, preferably of formula III-1g-3:

##STR00092## [0198] in which R.sup.3 has the meaning indicated above and wherein the respective rings, and preferably the phenylene rings, optionally may each be substituted by one or two alkyl groups, preferably by methyl and/or ethyl groups, preferably by one methyl group.

[0199] The liquid-crystal medium preferably comprises one or more compounds of the formula III-1 h, which are preferably selected from the group of the compounds of the formulae III-1 h-1 to III-1 h-3, preferably of the formula III-1 h-3:

##STR00093## [0200] in which the parameters have the meanings given above, and X.sup.3 preferably denotes F and wherein the respective rings, and preferably the phenylene rings, optionally may each be substituted by one or two alkyl groups, preferably by methyl and/or ethyl groups, preferably by one methyl group.

[0201] The liquid-crystal medium preferably comprises one or more compounds of the formula III-1i, which are preferably selected from the group of the compounds of the formulae III-1 i-1 and III-1 i-2, preferably of the formula III-1i-2:

##STR00094## [0202] in which the parameters have the meanings given above, and X.sup.3 preferably denotes F and wherein the respective rings, and preferably the phenylene rings, optionally may each be substituted by one or two alkyl groups, preferably by methyl and/or ethyl groups, preferably by one methyl group.

[0203] The liquid-crystal medium preferably comprises one or more compounds of the formula III-1j, which are preferably selected from the group of the compounds of the formulae III-1j-1 and III-1j-2, preferably of the formula III-1j-1:

##STR00095## [0204] in which the parameters have the meanings given above and wherein the respective rings, and preferably the phenylene rings, optionally may each be substituted by one or two alkyl groups, preferably by methyl and/or ethyl groups, preferably by one methyl group.

[0205] The liquid-crystal medium preferably comprises one or more compounds of the formula III-2. The compounds of the formula III-2 are preferably selected from the group of the compounds of the formulae III-2a and III-2b, preferably of formula III-2b:

##STR00096## [0206] in which the parameters have the respective meanings indicated above, and the parameters L.sup.33 and L.sup.34, independently of one another and of the other parameters, denote H or F, and wherein the respective rings, and preferably the phenylene rings, optionally may each be substituted by one or two alkyl groups, preferably by methyl and/or ethyl groups, preferably by one methyl group.

[0207] The liquid-crystal medium preferably comprises one or more compounds of the formula III-2a, which are preferably selected from the group of the compounds of the formulae III-2a-1 to III-2a-6:

##STR00097## [0208] in which R.sup.3 has the meaning indicated above, and wherein the respective rings, and preferably the phenylene rings, optionally may each be substituted by one or two alkyl groups, preferably by methyl and/or ethyl groups, preferably by one methyl group.

[0209] The liquid-crystal medium preferably comprises one or more compounds of the formula III-2b, which are preferably selected from the group of the compounds of the formulae III-2b-1 to III-2b-4, preferably III-2b-4:

##STR00098## [0210] in which R.sup.3 has the meaning indicated above and wherein the respective rings, and preferably the phenylene rings, optionally may each be substituted by one or two alkyl groups, preferably by methyl and/or ethyl groups, preferably by one methyl group.

[0211] Alternatively or in addition to the compounds of the formulae III-1 and/or III-2, the media in accordance with the present invention may comprise one or more compounds of the formula III-3

##STR00099## [0212] in which the parameters have the respective meanings indicated above under formula II.I and wherein the respective rings, and preferably the phenylene rings, optionally may each be substituted by one or two alkyl groups, preferably by methyl and/or ethyl groups, preferably by one methyl group.

[0213] These compounds are preferably selected from the group of the formulae III-3a and III-3b:

##STR00100## [0214] in which R.sup.3 has the meaning indicated above, and wherein the respective rings, and preferably the phenylene rings, optionally may each be substituted by one or two alkyl groups, preferably by methyl and/or ethyl groups, preferably by one methyl group.

[0215] The liquid-crystalline media in accordance with the present invention preferably comprise one or more dielectrically neutral compounds having a dielectric anisotropy in the range from 1.5 to 3, preferably selected from the group of the compounds of the formulae VI, VII, VIII and IX.

[0216] In the present invention, the elements all include their respective isotopes. In particular, one or more H in the compounds may be replaced by D, and this is also particularly preferred in some embodiments. A correspondingly high degree of deuteration of the corresponding compounds enables, for example, detection and recognition of the compounds. This is very helpful in some cases, in particular in the case of the compounds of formula I.

[0217] In the present invention, [0218] alkyl particularly preferably denotes straight-chain alkyl, in particular CH.sub.3, C.sub.2H.sub.5, n-C.sub.3H.sub.7, n-C.sub.4H.sub.9 or n-C.sub.5H.sub.11, and [0219] alkenyl particularly preferably denotes CH.sub.2CH, E-CH.sub.3CHCH, CH.sub.2CHCH.sub.2CH.sub.2, E-CH.sub.3CHCHCH.sub.2CH.sub.2 or E-(n-C.sub.3H.sub.7)CHCH.

[0220] In a preferred embodiment of the present invention, the media according to the invention in each case comprise one or more compounds of formula VI selected from the group of the compounds of the formulae VI-1 and VI-2, preferably one or more compounds each of formulae VI-1 and one or more compounds of formula VI-2,

##STR00101## [0221] in which the parameters have the respective meanings given above under formula VI, and preferably [0222] in formula VI-1 [0223] R.sup.61 and R.sup.62 independently of each other denote methoxy, ethoxy, propoxy, butoxy (also or pentoxy, preferably ethoxy, butoxy or pentoxy, more preferably ethoxy or butoxy and, most preferably butoxy. [0224] in formula VI-2 [0225] R.sup.61 preferably denotes vinyl, 1-E-propenyl, but-4-en-1-yl, pent-1-en-1-yl or pent-3-en-1-yl and n-propyl or n-pentyl and [0226] R.sup.62 denotes an unsubstituted alkyl radical having 1 to 7 C atoms, preferably having 2 to 5 C atoms, or, preferably, an unsubstituted alkoxy radical having 1 to 6 C atoms, particularly preferably having 2 or 4 C atoms and, most preferably, ethoxy, and

[0227] In a preferred embodiment of the present invention, the media according to the invention in each case comprise one or more compounds of formula VII selected from the group of the compounds of the formulae VII-1 to VII-3, preferably one or more compounds each of the formulae VII-1 and one or more compounds of formula VII-2,

##STR00102## [0228] in which the parameters have the respective meanings given above under formula VII, and preferably [0229] R.sup.71 denotes vinyl, 1-E-propenyl, but-4-en-1-yl, pent-1-en-1-yl or pent-3-en-1-yl, n-propyl or n-pentyl and [0230] R.sup.72 denotes an unsubstituted alkyl radical having 1 to 7 C atoms, preferably having 2 to 5 C atoms, or, preferably, an unsubstituted alkoxy radical having 1 to 6 C atoms, particularly preferably having 2 or 4 C atoms and, most preferably, ethoxy, [0231] and wherein the respective rings, and preferably the phenylene rings, optionally may each be substituted by one or two alkyl groups, preferably by methyl and/or ethyl groups, preferably by one methyl group.

[0232] In a preferred embodiment of the present invention, the media according to the invention in each case comprise one or more compounds of formula VI-1 selected from the group of the following compounds:

##STR00103##

[0233] In a preferred embodiment of the present invention, the media according to the invention in each case comprise one or more compounds of formula VI-2 selected from the group of the following compounds:

##STR00104##

[0234] In a preferred embodiment of the present invention, the media according to the invention in each case comprise one or more compounds of formula VII-1 selected from the group of the following compounds:

##STR00105##

[0235] In a preferred embodiment of the present invention, the media according to the invention in each case comprise one or more compounds of formula VII-2 selected from the group of the following compounds:

##STR00106##

[0236] In addition to the compounds of formula B or the preferred sub-formulae thereof, the media in accordance with the present invention preferably comprise one or more dielectrically negative compounds selected from the group of compounds of the formulae VI and VII preferably in a total concentration in the range from 5% or more to 90% or less, preferably from 10% or more to 80% or less, particularly preferably from 20% or more to 70% or less.

[0237] In a preferred embodiment of the present invention, the media according to the invention in each case comprise one or more compounds of formula VIII selected from the group of the compounds of the formulae VIII-1 to VIII-3, preferably one or more compounds each of the formulae VIII-1 and/or one or more compounds of formula VIII-3,

##STR00107## [0238] in which the parameters have the respective meanings given above under formula VIII, and preferably [0239] R.sup.81 denotes vinyl, 1-E-propenyl, but-4-en-1-yl, pent-1-en-1-yl or pent-3-en-1-yl, ethyl, n-propyl or n-pentyl, alkyl, preferably ethyl, n-propyl or n-pentyl and [0240] R.sup.82 denotes an unsubstituted alkyl radical having 1 to 7 C atoms, preferably having 1 to 5 C atoms or an unsubstituted alkoxy radical having 1 to 6 C atoms.

[0241] In formulae VIII-1 and VIII-2 R.sup.82 denotes preferably alkoxy having 2 or 4 C atoms and, most preferably, ethoxy and in formula VIII-3 it denotes preferably alky, preferably methyl, ethyl or n-propyl, most preferably methyl.

[0242] In a further preferred embodiment, the medium comprises one or more compounds selected from the group of formulae VI to IX, which are selected from the compounds of the following group of formulae:

##STR00108## ##STR00109## ##STR00110## ##STR00111## ##STR00112## ##STR00113## ##STR00114## ##STR00115## ##STR00116## ##STR00117## [0243] in which [0244] a denotes 1 or 2, [0245] alkyl and alkyl* each, independently of one another, denote a straight-chain alkyl radical having 1-6 C atoms, [0246] (O) denotes an oxygen atom or a single bond, and [0247] alkenyl denotes a straight-chain alkenyl radical having 2 to 7 C atoms, and preferably denotes CH.sub.2CH, CH.sub.2CHCH.sub.2CH.sub.2, CH.sub.3CHCH, CH.sub.3CH.sub.2CHCH, CH.sub.3(CH.sub.2).sub.2CHCH, CH.sub.3(CH.sub.2).sub.3CHCH or CH.sub.3CHCH(CH.sub.2).sub.2.

[0248] In a further preferred embodiment, the medium comprises one or more compounds of formula IV, preferably of formula IVa

##STR00118## [0249] in which [0250] R.sup.41 denotes an unsubstituted alkyl radical having 1 to 7 C atoms or an unsubstituted alkenyl radical having 2 to 7 C atoms, preferably an n-alkyl radical, particularly preferably having 2, 3, 4 or 5 C atoms, and [0251] R.sup.42 denotes an unsubstituted alkyl radical having 1 to 7 C atoms, an unsubstituted alkenyl radical having 2 to 7 C atoms, or an unsubstituted alkoxy radical having 1 to 6 C atoms, both preferably having 2 to 5 C atoms, an unsubstituted alkenyl radical preferably having 2, 3 or 4 C atoms, more preferably a vinyl radical or 1-propenyl radical and in particular a vinyl radical.

[0252] In a particularly preferred embodiment, the medium comprises one or more compounds of formula IV selected from the group of the compounds of the formulae IV-1 to IV-6, preferably of formula IV-1 and/or IV-6,

##STR00119## [0253] in which [0254] alkyl and alkyl, independently of one another, denote alkyl having 1 to 7 C atoms, preferably having 2 to 5 C atoms, [0255] alkenyl and alkenyl, independently of one another, denote alkenyl having 2 to 5 C atoms, preferably having 2 to 4 C atoms, particularly preferably 2 C atoms, [0256] alkenyl preferably denotes alkenyl having 2 to 5 C atoms, preferably having 2 to 4 C atoms, particularly preferably having 2 to 3 C atoms, and [0257] alkoxy denotes alkoxy having 1 to 5 C atoms, preferably having 2 to 4 C atoms.

[0258] In a particularly preferred embodiment, the media according to the invention comprise one or more compounds of formula IV-1 and/or one or more compounds of formula IV-2.

[0259] Particularly preferred compounds of formula IV are selected from the following sub-formulae:

##STR00120## ##STR00121## [0260] wherein the propyl, butyl and pentyl groups are straight-chain groups.

[0261] Most preferred are compounds selected from the following group of formulae

##STR00122## [0262] wherein the propyl groups is a straight-chain group.

[0263] In a further preferred embodiment, the medium comprises one or more compounds of formula V.

[0264] In a further preferred embodiment the medium comprises one or more compounds of formula I are selected from the group of compounds of formulae I-1 and I-2:

##STR00123## [0265] in which [0266] R.sup.11 and R.sup.12 independently of each other denote alkyl, alkoxy, fluorinated alkyl or fluorinated alkoxy, preferably having 1 to 7 C atoms wherein one CH.sub.2 group may be replaced by a 1,2-cyclopropyl group, by a 1,3-cyclopentyl group or by a 1,3-cyclopentenylene group, alkenyl, alkenyloxy, alkoxyalkyl or fluorinated alkenyl having 2 to 7 C atoms and preferably alkyl, alkoxy, alkenyl or alkenyloxy, most preferably alkoxy or alkenyloxy, [0267] R.sup.1 denotes alkyl, alkoxy, fluorinated alkyl or fluorinated alkoxy, preferably having 1 to 7 C atoms, wherein one CH.sub.2 group may be replaced by a 1,2-cyclopropyl group, by a 1,3-cyclopentyl group or by a 1,3-cyclopentenylene group, alkenyl, alkenyloxy, alkoxyalkyl or fluorinated alkenyl having 2 to 7 C atoms and preferably alkyl or alkenyl, and [0268] X.sup.1 denotes F, Cl, CN, NCS, fluorinated alkyl, fluorinated alkenyl, fluorinated alkoxy or fluorinated alkenyloxy, the latter four groups preferably having 1 to 4 C atoms, preferably F, Cl, CF.sub.3 or OCF.sub.3, more preferably F, CF.sub.3 or OCF.sub.3 and, most preferably, CF.sub.3 or OCF.sub.3.

[0269] In a further preferred embodiment the medium comprises one or more compounds of formula I selected from the group of compounds of formulae I-1-1 to I-1-12:

##STR00124## ##STR00125##

[0270] In a further preferred embodiment the medium comprises one or more compounds of formula I are selected from the group of compounds of formulae I-3 and I-4:

##STR00126## [0271] in which [0272] R.sup.11 and R.sup.12 independently of each other denote alkyl, alkoxy, fluorinated alkyl or fluorinated alkoxy, preferably having 1 to 7 C atoms wherein one CH.sub.2 group may be replaced by a 1,2-cyclopropyl group, by a 1,3-cyclopentyl group or by a 1,3-cyclopentenylene group, alkenyl, alkenyloxy, alkoxyalkyl or fluorinated alkenyl having 2 to 7 C atoms and preferably alkyl, alkoxy, alkenyl or alkenyloxy, most preferably alkoxy or alkenyloxy, [0273] R.sup.1 denotes alkyl, alkoxy, fluorinated alkyl or fluorinated alkoxy, preferably having 1 to 7 C atoms, wherein one CH.sub.2 group may be replaced by a 1,2-cyclopropyl group, by a 1,3-cyclopentyl group or by a 1,3-cyclopentenylene group, alkenyl, alkenyloxy, alkoxyalkyl or fluorinated alkenyl having 2 to 7 C atoms and preferably alkyl or alkenyl, and [0274] X.sup.1 denotes F, Cl, CN, NCS, fluorinated alkyl, fluorinated alkenyl, fluorinated alkoxy or fluorinated alkenyloxy, the latter four groups preferably having 1 to 4 C atoms, preferably F, Cl, CF.sub.3 or OCF.sub.3, more preferably F, CF.sub.3 or OCF.sub.3 and, most preferably, CF.sub.3 or OCF.sub.3.

[0275] In a further preferred embodiment the medium comprises one or more compounds of formula I selected from the group of compounds of formulae I-3-1 to I-3-12:

##STR00127## ##STR00128##

[0276] In a further preferred embodiment the medium comprises one or more compounds of formula B, which preferably are selected from the group of compounds of formulae B-1 and B-2:

##STR00129## [0277] in which [0278] R.sup.1 denotes alkyl, alkoxy, fluorinated alkyl or fluorinated alkoxy, preferably having 1 to 7 C atoms, alkenyl, alkenyloxy, alkoxyalkyl or fluorinated alkenyl having 2 to 7 C atoms and preferably alkyl or alkenyl, and [0279] X.sup.1 denotes F, Cl, CN, NCS, fluorinated alkyl, fluorinated alkenyl, fluorinated alkoxy or fluorinated alkenyloxy, the latter four groups preferably having 1 to 4 C atoms, preferably F, Cl, CF.sub.3 or OCF.sub.3, more preferably F, CF.sub.3, or OCF.sub.3 and, most preferably, OCF.sub.3 or CF.sub.3.

[0280] In a further preferred embodiment the medium comprises alternatively or additionally one or more compounds of formula B, which are selected from the group of compounds of formulae B-3 and B-4:

##STR00130## [0281] in which [0282] R.sup.1 denotes alkyl, alkoxy, fluorinated alkyl or fluorinated alkoxy, preferably having 1 to 7 C atoms, alkenyl, alkenyloxy, alkoxyalkyl or fluorinated alkenyl having 2 to 7 C atoms and preferably alkyl or alkenyl, and [0283] X.sup.1 denotes F, Cl, CN, NCS, fluorinated alkyl, fluorinated alkenyl, fluorinated alkoxy or fluorinated alkenyloxyl, the latter four groups preferably having 1 to 4 C atoms, preferably F, Cl, CF.sub.3 or OCF.sub.3, more preferably F, CF.sub.3, or OCF.sub.3 and, most preferably, OCF.sub.3 or CF.sub.3.

[0284] In an embodiment the medium comprises alternatively or additionally one or more compounds of formulae B-1-1, B-2-1, B-2-2, B-3-1, B-4-1 and B-4-2:

##STR00131## [0285] wherein the parameters have the respective meanings given above.

[0286] The media according to the invention preferably comprise the following compounds in the total concentrations indicated: [0287] 1-30% by weight of one or more compounds selected from the group of the compounds of formula C and [0288] 0-30% by weight of one or more compounds of formula I, preferably selected from the group of the compounds of the formulae I-1 and I-2, most preferably of formula I-2 and/or [0289] 2-60% by weight of one or more compounds of formula II, preferably selected from the group of the compounds of the formulae II-1 and II-2 and/or [0290] 1-60% by weight of one or more compounds of formula III, and/or [0291] 20-80% by weight of one or more compounds of formula IV, and/or [0292] 0-25% by weight of one or more compounds of formula V, and/or [0293] 0-25% by weight of one or more compounds of formula VI, and/or [0294] 0-20% by weight of one or more compounds of formula VII, and/or [0295] 0-30% by weight of one or more compounds of formula VIII, preferably selected from the group of the compounds of the formulae VIII-1 and VIII-2 and/or [0296] 0-60% by weight of one or more compounds of formula IX, and/or [0297] 0-30% by weight of one or more compounds selected from the group of the compounds of formula B [0298] where the total content of all compounds of formula C, of formula B and of formulae I to IX, which are present in the medium, preferably is 95% or more, more preferably 97% or more and, most preferably, 100%.

[0299] The latter condition holds for all media according to the present application.

[0300] In a further preferred embodiment, the media in accordance with the present invention in addition to the compounds of formula C or the preferred sub-formulae thereof, and to the compounds I and/or B and/or of formulae II and/or III and/or VI and/or VII and/or VIII and/or IX, preferably comprise one or more dielectrically neutral compounds selected from the group of compounds of formulae IV and V preferably in a total concentration in the range from 5% or more to 90% or less, preferably from 10% or more to 80% or less, particularly preferably from 20% or more to 70% or less.

[0301] The medium according to the invention in a particularly preferred embodiment comprises [0302] one or more compounds of formula C in a total concentration in the range from 3% or more to 50% or less, preferably in the range from 5% or more to 30% or less, and [0303] one or more compounds of formula II in a total concentration in the range from 5% or more to 50% or less, preferably in the range from 10% or more to 40% or less, and/or [0304] one or more compounds of formula VII-1 in a total concentration in the range from 5% or more to 30% or less, and/or [0305] one or more compounds of formula VII-2 in a total concentration in the range from 3% or more to 30% or less and/or [0306] one or more compounds of formula I in a total concentration in the range from 3% or more to 50% or less, preferably in the range from 5% or more to 30% or less, and/or [0307] one or more compounds of formula B in a total concentration in the range from 3% or more to 50% or less, preferably in the range from 5% or more to 30% or less.

[0308] Preferably the concentration of the compounds of formula C in the media according to the invention is in the range from 1% or more to 20% or less, more preferably from 1.5% or more to 20% or less, most preferably from 2% or more to 10% or less.

[0309] In a preferred embodiment of the present invention the concentration of the compounds of formula II in the media is in the range from 3% or more to 60% or less, more preferably from 5% or more to 55% or less, more preferably from 10% or more to 50% or less and, most preferably, from 15% or more to 45% or less.

[0310] In a preferred embodiment of the present invention the concentration of the compounds of formula VII in the media is in the range from 2% or more to 50% or less, more preferably from 5% or more to 40% or less, more preferably from 10% or more to 35% or less and, most preferably, from 15% or more to 30% or less.

[0311] In a preferred embodiment of the present invention the concentration of the compounds of formula VII-1 in the media is in the range from 1% or more to 40% or less, more preferably either from 2% or more to 35% or less, or, alternatively, from 15% or more to 25% or less.

[0312] In a preferred embodiment of the present invention the concentration of the compounds of formula VII-2 in the media, if present, is in the range from 1% or more to 40% or less, more preferably from 5% or more to 35% or less and, most preferably, from 10% or more to 30% or less.

[0313] Preferably the concentration of the compounds of formula B in the media according to the invention is in the range from 1% or more to 60% or less, more preferably from 3% or more to 40% or less, most preferably from 5% or more to 35% or less.

[0314] In a preferred embodiment of the present invention the concentration of the compounds of formula I in the media according to the invention is in the range from 1% or more to 60% or less, more preferably from 2% or more to 40% or less, most preferably from 3% or more to 35% or less

[0315] The present invention also relates to electro-optical displays or electro-optical components which contain liquid-crystalline media according to the invention. Preference is given to electro-optical displays which are based on the VA, ECB, IPS or FFS effect, preferably on the VA, IPS or FFS effect, and in particular those which are addressed by means of an active-matrix addressing device.

[0316] Accordingly, the present invention likewise relates to the use of a liquid-crystalline medium according to the invention in an electro-optical display or in an electro-optical component, and to a process for the preparation of the liquid-crystalline media according to the invention, characterised in that one or more compounds of formula B are mixed with one or more compounds of formula I, preferably with one or more compounds of the sub-formulae I-1 and/or I-2, preferably of formula I-2 and/or one or more compounds of formula II, preferably with one or more compounds of the sub-formulae II-1 and/or II-2 with one or more compounds of formula VII, preferably with one or more compounds of the sub-formulae VII-1 and/or VII-2, particularly preferably one or more compounds from two or more, preferably from three or more, different formulae thereof and very particularly preferably from all four of these formulae II-1, II-2, VII-1 and VII-2 and one or more further compounds, preferably selected from the group of the compounds of the formulae IV and V, more preferably with one or more compounds both of formula IV and of formula V.

[0317] In a further preferred embodiment, the medium comprises one or more compounds of formula IV, selected from the group of the compounds of the formulae IV-2 and IV-3,

##STR00132## [0318] in which [0319] alkyl and alkyl, independently of one another, denote alkyl having 1 to 7 C atoms, preferably having 2 to 5 C atoms, [0320] alkoxy denotes alkoxy having 1 to 5 C atoms, preferably having 2 to 4 C atoms.

[0321] In a further preferred embodiment, the medium comprises one or more compounds of formula V selected from the group of the compounds of the formulae V-1 and V-2, preferably of formulae V-1,

##STR00133## [0322] in which the parameters have the meanings given above under formula V, and preferably [0323] R.sup.51 denotes alkyl having 1 to 7 C atoms or alkenyl having 2 to 7 C atoms, and [0324] R.sup.52 denotes alkyl having 1 to 7 C atoms, alkenyl having 2 to 7 C atoms or alkoxy having 1 to 6 C atoms, preferably alkyl or alkenyl, particularly preferably alkyl.

[0325] In a further preferred embodiment, the medium comprises one or more compounds of formula V-1 selected from the group of the compounds of the formulae V-1a and V-1 b,

##STR00134## [0326] in which [0327] alkyl and alkyl, independently of one another, denote alkyl having 1 to 7 C atoms, preferably having 2 to 5 C atoms, and [0328] alkenyl denotes alkenyl having 2 to 7 C atoms, preferably having 2 to 5 C atoms.

[0329] In addition, the present invention relates to a method for the reduction of the wavelength dispersion of the birefringence of a liquid-crystalline medium which comprises one or more compounds of formula II, optionally one or more compounds selected from the group of the compounds of the formulae VII-1 and VII-2 and/or one or more compounds of formula IV and/or one or more compounds of formula V, characterised in that one or more compounds of formula B are used in the medium.

[0330] Besides compounds of the formulae C, B and I to IX, other constituents may also be present, for example in an amount of up to 45%, but preferably up to 35%, in particular up to 10%, of the mixture as a whole.

[0331] The media according to the invention may optionally also comprise dielectrically positive compounds, whose total concentration is preferably 20% or less, more preferably 10% or less, based on the entire medium.

[0332] In a preferred embodiment, the liquid-crystal media according to the invention comprise in total, based on the mixture as a whole, [0333] 1% or more to 30% or less, preferably 1.5% or more to 20% or less, particularly preferably 2% or more to 10% or less, of the compound of formula C, and/or [0334] 1% or more to 20% or less, preferably 1% or more to 15% or less, particularly preferably 2% or more to 12% or less, of the compound of formula B, and/or [0335] 0% or more to 20% or less, preferably 0% or more to 15% or less, particularly preferably 0% or more to 12% or less, of the compound of formula I, and/or [0336] 3% or more to 50% or less, preferably 4% or more to 45% or less, particularly preferably 5% or more to 40% or less, of compounds of formulae II and/or III, and/or [0337] 0% or more to 35% or less, preferably 2% or more to 30% or less, particularly preferably 3% or more to 25% or less, of compounds of formulae IV and/or V, and/or [0338] 5% or more to 50% or less 10% or more to 45% or less, preferably 15% or more to 40% or less of compounds of the formulae VI and/or VII and/or VIII and/or IX.

[0339] The liquid-crystal media in accordance with the present invention may comprise one or more chiral compounds.

[0340] Particularly preferred embodiments of the present invention meet one or more of the following conditions, where the acronyms (abbreviations) are explained in Tables A to C and illustrated by examples in Table D.

[0341] Preferably the media according to the present invention fulfil one or more of the following conditions. [0342] i. The liquid-crystalline medium has a birefringence of 0.060 or more, particularly preferably 0.070 or more. [0343] ii. The liquid-crystalline medium has a birefringence of 0.200 or less, particularly preferably 0.180 or less. [0344] iii. The liquid-crystalline medium has a birefringence in the range from 0.090 or more to 0.160 or less. [0345] iv. The liquid-crystalline medium comprises one or more particularly preferred compounds of formula C, preferably selected from the (sub-) formulae C-1 to C-4, most preferably of (sub-)formula(e) C-1 and/or to C-3. [0346] v. The liquid-crystalline medium comprises one or more particularly preferred compounds of formula B, preferably selected from the (sub-) formulae B-1 to B-4, most preferably of (sub-)formulae B-2 and/or B4. [0347] vi. The liquid-crystalline medium comprises one or more particularly preferred compounds of formula I, preferably selected from the (sub-) formulae I-1 and I-2, most preferably of (sub-)formula I-2. [0348] vii. The total concentration of the compounds of formula II in the mixture as a whole is 25% or more, preferably 30% or more, and is preferably in the range from 25% or more to 49% or less, particularly preferably in the range from 29% or more to 47% or less, and very particularly preferably in the range from 37% or more to 44% or less. [0349] viii. The liquid-crystalline medium comprises one or more compounds of formula IV selected from the group of the compounds of the following formulae: CC-n-V and/or CC-n-Vm and/or CCVV and/or CCV-Vn and/or CC-nV-Vn, particularly preferably CC-3-V, preferably in a concentration of up to 60% or less, particularly preferably up to 50% or less, and optionally additionally CC-3-V1, preferably in a concentration of up to 15% or less, and/or CC-4-V, preferably in a concentration of up to 40% or less, particularly preferably up to 30% or less. [0350] ix. The media comprise the compound of formula CC-n-V, preferably CC-3-V, preferably in a concentration of 1% or more to 60% or less, more preferably in a concentration of 3% or more to 35% or less. [0351] x. The total concentration of the compounds of formula CC-3-V in the mixture as a whole preferably either is 15% or less, preferably 10% or less or 20% or more, preferably 25% or more. [0352] xi. The total concentration of the compounds of formula Y-nO-Om in the mixture as a whole is 2% or more to 30% or less, preferably 5% or more to 15% or less. [0353] xii. The total concentration of the compounds of formula CY-n-Om in the mixture as a whole is 5% or more to 60% or less, preferably 15% or more to 45% or less. [0354] xiii. The total concentration of the compounds of formula CCY-n-Om and/or CCY-n-m, preferably of CCY-n-Om, in the mixture as a whole is 5% or more to 40% or less, preferably 1% or more to 25% or less. [0355] xiv. The total concentration of the compounds of formula CLY-n-Om in the mixture as a whole is 5% or more to 40% or less, preferably 10% or more to 30% or less. [0356] xv. The liquid-crystalline medium comprises one or more compounds of formula IV, preferably of the formulae IV-1 and/or IV-2, preferably in a total concentration of 1% or more, in particular 2% or more, and very particularly preferably 3% or more to 50% or less, preferably 35% or less. [0357] xvi. The liquid-crystalline medium comprises one or more compounds of formula V, preferably of the formulae V-1 and/or V-2, preferably in a total concentration of 1% or more, in particular 2% or more, and very particularly preferably 15% or more to 35% or less, preferably to 30% or less. [0358] xvii. The total concentration of the compounds of formula CCPV-n, preferably CCPV-1, in the mixture as a whole preferably is 5% or more to 30% or less, preferably 15% or more to 25% or less. [0359] xviii. The total concentration of the compounds of formula CCP-V2-n, preferably CCP-V2-1, in the mixture as a whole preferably is 1% or more to 15% or less, preferably 2% or more to 10% or less.

[0360] The invention furthermore relates to an electro-optical display having active-matrix addressing based on the VA, ECB, IPS, FFS or UB-FFS effect, characterised in that it contains, as dielectric, a liquid-crystalline medium in accordance with the present invention.

[0361] The liquid-crystal mixture preferably has a nematic phase range having a width of at least 70 degrees.

[0362] The rotational viscosity .sub.1 is preferably 350 mPa.Math.s or less, preferably 250 mPa.Math.s or less and, in particular, 150 mPa.Math.s or less.

[0363] The mixtures according to the invention are suitable for all IPS and FFS-TFT applications using dielectrically positive liquid crystalline media, such as, e.g. XB-FFS.

[0364] The liquid-crystalline media according to the invention preferably virtually completely consist of 4 to 15, in particular 5 to 12, and particularly preferably 10 or less, compounds. These are preferably selected from the group of the compounds of the formulae C, B, 1, 11, 111, IV, V, VI, VII, VIII and IX.

[0365] The liquid-crystalline media according to the invention may optionally also comprise more than 18 compounds. In this case, they preferably comprise 18 to 25 compounds.

[0366] In a preferred embodiment, the liquid-crystal media according to the invention predominantly comprise, preferably essentially consist of and, most preferably, virtually completely consist of compounds, which do not comprise a cyano group.

[0367] In a preferred embodiment, the liquid-crystal media according to the invention comprise compounds selected from the group of the compounds of the formulae C, B, 1, 11, and II, IV and V and VI to IX, preferably selected from the group of the compounds of the formulae C-1, C-2, C-3, C-4, B-1, B-2, B-3, B-4, I-1, I-2, II-1, II-2, III-1, 111-2, IV, V, VII-1, VII-2, VIII and IX; they preferably consist predominantly, particularly preferably essentially and very particularly preferably virtually completely of the compounds of the said formulae.

[0368] The liquid-crystal media according to the invention preferably have a nematic phase from in each case at least 10 C. or less to 70 C. or more, particularly preferably from 20 C. or less to 80 C. or more, very particularly preferably from 30 C. or less to 85 C. or more and most preferably from 40 C. or less to 90 C. or more.

[0369] The expression have a nematic phase here means on the one hand that no smectic phase and no crystallisation are observed at low temperatures at the corresponding temperature and on the other hand that no clearing occurs on heating out of the nematic phase. The investigation at low temperatures is carried out in a flow viscometer at the corresponding temperature and checked by storage in test cells having a cell thickness corresponding to the electro-optical application for at least 100 hours. If the storage stability at a temperature of 20 C. in a corresponding test cell is 1,000 h or more, the medium is regarded as stable at this temperature. At temperatures of 30 C. and 40 C., the corresponding times are 500 h and 250 h respectively. At high temperatures, the clearing point is measured in capillaries by conventional methods.

[0370] In a preferred embodiment, the liquid-crystal media according to the invention are characterised by optical anisotropy values in the moderate to low range. The birefringence values are preferably in the range from 0.075 or more to 0.130 or less, particularly preferably in the range from 0.085 or more to 0.120 or less and very particularly preferably in the range from 0.090 or more to 0.115 or less.

[0371] In this embodiment, the liquid-crystal media according to the invention have a positive dielectric anisotropy , which preferably is in the range from 2.0 or more to 20 or less, more preferably to 15 or less, more preferably from 2.0 or more to 10 or less, particularly preferably from 2.0 or more to 9.0 or less and very particularly preferably from 2.5 or more to 8.0 or less.

[0372] The liquid-crystal media according to the invention preferably have relatively low values for the threshold voltage (V.sub.0) in the range from 1.0 V or more to 5.0 V or less, preferably to 2.5 V or less, preferably from 1.2 V or more to 2.2 V or less, particularly preferably from 1.3 V or more to 2.0 V or less.

[0373] In addition, the liquid-crystal media according to the invention have high values for the VHR in liquid-crystal cells.

[0374] In general, liquid-crystal media having a low addressing voltage or threshold voltage here have a lower VHR than those having a higher addressing voltage or threshold voltage, and vice versa.

[0375] These preferred values for the individual physical properties are preferably also in each case maintained by the media according to the invention in combination with one another.

[0376] In the present invention, the term compounds, also written as com-pound(s), means both one and also a plurality of compounds, unless explicitly indicated otherwise.

[0377] In a preferred embodiment, the liquid-crystalline media according to the invention comprise [0378] one or more compounds of formula C, and [0379] one or more compounds of formula B, preferably selected from the group of formulae CB-n-F, CB-n-OT, CB-n-T, LB-n-F, LB-n-OT and LB-n-T, more preferably selected from the group of formulae CB-n-OT, CB-n-T, LB-n-OT and LB-n-T, preferably selected from the group of formulae CB-n-OT, CB-n-T, and/or [0380] one or more compounds of formula II, preferably selected from the group of formulae PUQU-n-F, CDUQU-n-F, APUQU-n-F and PGUQU-n-F, and/or [0381] one or more compounds of formula III, preferably selected from the group of formulae CCP-n-OT, CGG-n-F, and CGG-n-OD, and/or [0382] one or more compounds of formulae IV and/or V, preferably selected from the group of formulae CC-n-V, CCP-n-m, CCPV-n, CCP-V2-n and CGP-n-n and/or [0383] one or more compounds of formula VI, preferably selected from the group of formulae Y-n-Om, Y-nO-Om and/or CY-n-Om, preferably selected from the group of the compounds of the formulae Y-3-01, Y-40-04, CY-3-02, CY-3-04, CY-5-02 and CY-5-04, and/or [0384] optionally, preferably obligatorily, one or more compounds of formula VII-1, preferably selected from the group of compounds of the formulae CCY-n-m and CCY-n-Om, preferably of formula CCY-n-Om, preferably selected from the group of the compounds of the formulae CCY-3-02, CCY-2-02, CCY-3-01, CCY-3-03, CCY-4-02, CCY-3-02 and CCY-5-02, and/or [0385] optionally, preferably obligatorily, one or more compounds of formula VII-2, preferably of formula CLY-n-Om, preferably selected from the group of the compounds of the formulae CLY-2-04, CLY-3-02, CLY-3-03, and/or [0386] one or more compounds of formula VIII, preferably selected from the group of formulae CZY-n-On and CCOY-n-m and/or [0387] one or more compounds of formula IX, preferably selected from the group of formulae PYP-n-m, PYP-n-mVI and PYP-n-mVI, preferably selected from the group of formulae PYP-2-3, PYP-2-4, PYP-2-5, PYP-2-V and PYP-2-2V1, and/or [0388] one or more compounds selected from the group of formulae PGP-n-m, PGP-n-V, PGP-n-Vm, PGP-n-mV and PGP-n-mVI, preferably selected from the group of formulae PGP-2-3, PGP-2-4, PGP-2-5, PGP-1-V, PGP-2-V and PGP-2-2V1, and/or [0389] optionally, preferably obligatorily, one or more compounds of formula IV, preferably selected from the group of the compounds of the formulae CC-n-V, CC-n-Vm, CC-n-mVI and CC-nV-Vm, preferably CC-3-V, CC-3-V1, CC-4-V, CC-5-V, CC-3-2V1 and CCVV, particularly preferably selected from the group of the compounds CC-3-V, CC-3-V1, CC-4-V, CC-3-2V1 and CCVV, very particularly preferably the compound CC-3-V, and optionally additionally the compound(s) CC-4-V and/or CC-3-V1 and/or CC-3-2V1 and/or CCVV, and/or [0390] optionally, preferably obligatorily, one or more compounds of formula V, preferably selected from the group of formulae CCPV-1 and/or CCP-V2-1.

[0391] In a specific preferred embodiment of the present invention, the media according to the invention comprise one or more compounds of formula IX,

[0392] The compounds of formula IX, are also highly suitable as stabilisers in liquid-crystal mixtures, especially in case p=q=1 and ring A.sup.9=1,4-phenylene. In particular, they stabilise the VHR of the mixtures against UV exposure.

[0393] In a preferred embodiment the media according to the invention comprise one or more compounds of formula IX selected from one or more formulae of the group of the compounds of the formulae IX-1 to IX-4, very particularly preferably of the formulae IX-1 to IX-3,

##STR00135## [0394] in which the parameters have the meanings given under formula IX.

[0395] In a further preferred embodiment, the medium comprises one or more compounds of formula IX-3, preferably of formula IX-3-a,

##STR00136## [0396] in which [0397] alkyl and alkyl, independently of one another, denote alkyl having 1 to 7 C atoms, preferably having 2 to 5 C atoms.

[0398] In case the compounds of formula IX are used in the liquid crystalline media according to the present invention, they are preferably present in a concentration of 20% or less, more preferably of 10% or less and, most preferably, of 5% or less and for the individual i.e. (homologous) compounds preferably in a concentration of 10% or less and, more preferably, of 5% or less.

[0399] For the present invention, the following definitions apply in connection with the specification of the constituents of the compositions, unless indicated otherwise in individual cases: [0400] comprise: the concentration of the constituents in question in the composition is preferably 5% or more, particularly preferably 10% or more, very particularly preferably 20% or more, [0401] predominantly consist of: the concentration of the constituents in question in the composition is preferably 50% or more, particularly preferably 55% or more and very particularly preferably 60% or more, [0402] essentially consist of: the concentration of the constituents in question in the composition is preferably 80% or more, particularly preferably 90% or more and very particularly preferably 95% or more, and [0403] virtually completely consist of: the concentration of the constituents in question in the composition is preferably 98% or more, particularly preferably 99% or more and very particularly preferably 100.0%.

[0404] This applies both to the media as compositions with their constituents, which can be groups of compounds as well as individual compounds, and also to the groups of compounds with their respective constituents, the compounds. Only in relation to the concentration of an individual compound relative to the medium as a whole does the term comprise mean: the concentration of the compound or compounds in question is preferably 1% or more, particularly preferably 2% or more, very particularly preferably 4% or more.

[0405] For the present invention, means less than or equal to, preferably less than, and means greater than or equal to, preferably greater than.

[0406] For the present invention

##STR00137## [0407] denote trans-1,4-cyclohexylene,

##STR00138## [0408] denotes a mixture of both cis- and trans-1,4-cyclohexylene and

##STR00139## [0409] denote 1,4-phenylene.

[0410] For the present invention, the expression dielectrically positive compounds means compounds having a of >1.5, the expression dielectrically neutral compounds means compounds having 1.51.5 and the expression dielectrically negative compounds means compounds having <1.5. The dielectric anisotropy of the compounds is determined here by dissolving 10% of the compounds in a liquid-crystalline host and determining the capacitance of the resultant mixture in each case in at least one test cell having a cell thickness of 20 m with homeotropic and with homogeneous surface alignment at 1 kHz. The measurement voltage is typically 0.5 V to 1.0 V, but is always lower than the capacitive threshold of the respective liquid-crystal mixture investigated.

[0411] The host mixture used for dielectrically positive and dielectrically neutral compounds is ZLI-4792 and that used for dielectrically negative compounds is ZLI-2857, both from Merck KGaA, Germany. The values for the respective compounds to be investigated are obtained from the change in the dielectric constant of the host mixture after addition of the compound to be investigated and extrapolation to 100% of the compound employed. The compound to be investigated is dissolved in the host mixture in an amount of 10%. If the solubility of the substance is too low for this purpose, the concentration is halved in steps until the investigation can be carried out at the desired temperature.

[0412] The liquid-crystal media according to the invention may, if necessary, also comprise further additives, such as, for example, stabilisers and/or pleo-chroitic, e.g. dichroitic, dyes and/or chiral dopants in the usual amounts. The amount of these additives employed is preferably in total 0% or more to 10% or less, based on the amount of the entire mixture, particularly preferably 0.1% or more to 6% or less. The concentration of the individual compounds employed is preferably 0.1% or more to 3% or less. The concentration of these and similar additives is generally not taken into account when specifying the concentrations and concentration ranges of the liquid-crystal compounds in the liquid-crystal media.

[0413] In a preferred embodiment, the liquid-crystal media according to the invention comprise a polymer precursor which comprises one or more reactive compounds, preferably reactive mesogens, and, if necessary, also further additives, such as, for example, polymerisation initiators and/or polymerisation moderators, in the usual amounts. The amount of these additives employed is in total 0% or more to 10% or less, based on the amount of the entire mixture, preferably 0.1% or more to 2% or less. The concentration of these and similar additives is not taken into account when specifying the concentrations and concentration ranges of the liquid-crystal compounds in the liquid-crystal media.

[0414] The compositions consist of a plurality of compounds, preferably 3 or more to 30 or fewer, particularly preferably 6 or more to 20 or fewer and very particularly preferably 10 or more to 16 or fewer compounds, which are mixed in a conventional manner. In general, the desired amount of the compounds used in lesser amount is dissolved in the compounds making up the principal constituent of the mixture. This is advantageously carried out at elevated temperature. If the selected temperature is above the clearing point of the principal constituent, completion of the dissolution operation is particularly easy to observe. However, it is also possible to prepare the liquid-crystal mixtures in other conventional ways, for example using pre-mixes or from a so-called multi-bottle system.

[0415] The mixtures according to the invention exhibit very broad nematic phase ranges having clearing points of 65 C. or more, very favourable values for the capacitive threshold, relatively high values for the holding ratio and at the same time very good low-temperature stabilities at 30 C. and 40 C. Furthermore, the mixtures according to the invention are distinguished by low rotational viscosities .sub.1.

[0416] It goes without saying to the person skilled in the art that the media according to the invention for use in VA, IPS, FFS or PALC displays may also comprise compounds in which, for example, H, N, O, Cl, F have been replaced by the corresponding isotopes.

[0417] The structure of the liquid-crystal displays according to the invention corre-sponds to the usual geometry, as described, for example, in EP-A 0 240 379.

[0418] The liquid-crystal phases according to the invention can be modified by means of suitable additives in such a way that they can be employed in any type of, for example, IPS and FFS LCD display that has been disclosed to date.

[0419] Table E below indicates possible dopants which can be added to the mixtures according to the invention. If the mixtures comprise one or more dopants, it is (they are) employed in amounts of 0.01% to 4%, preferably 0.1% to 1.0%.

[0420] Stabilisers which can be added, for example, to the mixtures according to the invention, preferably in amounts of 0.01% to 6%, in particular 0.1% to 3%, are shown below in Table F.

[0421] For the purposes of the present invention, all concentrations are, unless explicitly noted otherwise, indicated in percent by weight and relate to the corresponding mixture as a whole or mixture constituents, again a whole, unless explicitly indicated otherwise. In this context the term the mixture describes the liquid crystalline medium.

[0422] All temperature values indicated in the present invention, such as, for example, the melting point T(C,N), the smectic (S) to nematic (N) phase transition T(S,N) and the clearing point T(N,I), are indicated in degrees Celsius ( C.) and all temperature differences are correspondingly indicated in differential degrees ( or degrees), unless explicitly indicated otherwise.

[0423] For the present invention, the term threshold voltage relates to the capacitive threshold (V.sub.0), also known as the Freedericksz threshold, unless explicitly indicated otherwise.

[0424] All physical properties are and have been determined in accordance with Merck Liquid Crystals, Physical Properties of Liquid Crystals, status November 1997, Merck KGaA, Germany, and apply for a temperature of 20 C., and n is determined at 436 nm, 589 nm and at 633 nm, and at 1 kHz, unless explicitly indicated otherwise in each case.

[0425] The electro-optical properties, for example the threshold voltage (V.sub.0) (capacitive measurement), are, as is the switching behaviour, determined in test cells produced at Merck Japan. The measurement cells have soda-lime glass substrates and are constructed in an ECB or VA configuration with polyimide alignment layers (SE-1211 with diluent **26 (mixing ratio 1:1), both from Nissan Chemicals, Japan), which have been rubbed perpendicularly to one another and effect homeotropic alignment of the liquid crystals. The surface area of the transparent, virtually square ITO electrodes is 1 cm.sup.2.

[0426] Unless indicated otherwise, a chiral dopant is not added to the liquid-crystal mixtures used, but the latter are also particularly suitable for applications in which doping of this type is necessary.

[0427] The rotational viscosity is determined using the rotating permanent magnet method and the flow viscosity in a modified Ubbelohde viscometer. For liquid-crystal mixtures ZLI-2293, ZLI-4792 and MLC-6608, all products from Merck KGaA, Darmstadt, Germany, the rotational viscosity values determined at 20 C. are 161 mPa.Math.s, 133 mPa.Math.s and 186 mPa.Math.s respectively, and the flow viscosity values () are 21 mm.sup.2.Math.s.sup.1, 14 mm.sup.2.Math.s.sup.1 and 27 mm.sup.2.Math.s.sup.1, respectively.

[0428] The dispersion of the materials may for practical purposes be conveniently characterized in the following way, which is used throughout this invention unless explicitly stated otherwise. The values of the birefringence are determined at a temperature of 20 C. at several fixed wavelengths using a modified Abb refractometer with homeotropically aligning surfaces on the sides of the prisms in contact with the material. The birefringence values are determined at the specific wavelength values of 436 nm (respective selected spectral line of a low pressure mercury lamp), 589 nm (sodium D line) and 633 nm (wavelength of a HE-Ne laser (used in combination with an attenuator/diffusor in order to prevent damage to the eyes of the observers. In the following table n is given at 589 nm and (n) is given as (n)=n(436 nm)n(633 nm).

[0429] The following symbols are used, unless explicitly indicated otherwise: [0430] V.sub.0 threshold voltage, capacitive [V] at 20 C., [0431] n.sub.e extraordinary refractive index measured at 20 C. and 589 nm, [0432] n.sub.o ordinary refractive index measured at 20 C. and 589 nm, [0433] n optical anisotropy measured at 20 C. and 589 nm, [0434] wavelength [nm], [0435] n() optical anisotropy measured at 20 C. and wavelength , [0436] (n) change in optical anisotropy defined as: n(20 C., 436 nm)n(20 C., 633 nm), [0437] (n*) relative change in optical anisotropy defined as: (n)/n(20 C., 589 nm), [0438] .sub. dielectric susceptibility perpendicular to the director at 20 C. and 1 kHz, [0439] dielectric susceptibility parallel to the director at 20 C. and 1 kHz, [0440] dielectric anisotropy at 20 C. and 1 kHz, [0441] T(N,I) or clp. clearing point [ C.], [0442] flow viscosity measured at 20 C. [mm.sup.2.Math.s.sup.1], [0443] .sub.1 rotational viscosity measured at 20 C. [mPa.Math.s], [0444] k.sub.11 elastic constant, splay deformation at 20 C. [pN], [0445] k.sub.22 elastic constant, twist deformation at 20 C. [pN] (k.sub.22 k.sub.11), [0446] k.sub.33 elastic constant, bend deformation at 20 C. [pN], [0447] k.sub.av. average elastic constant at 20 C. [pN] defined here as k.sub.av.(3/2 k.sub.11+k.sub.33)/3(k.sub.11+k.sub.22+k.sub.33)/3, [0448] LTS low-temperature stability of the phase, determined in test cells, [0449] VHR voltage holding ratio, [0450] VHR decrease in the voltage holding ratio, and [0451] S.sub.rel relative stability of the VHR,

[0452] The following examples explain the present invention without limiting it. However, they show the person skilled in the art preferred mixture concepts with compounds preferably to be employed and the respective concentrations thereof and combinations thereof with one another. In addition, the examples illustrate the properties and property combinations that are accessible.

[0453] For the present invention and in the following examples, the structures of the liquid-crystal compounds are indicated by means of acronyms, with the transformation into chemical formulae taking place in accordance with Tables A to C below. All radicals C.sub.nH.sub.2n+1, C.sub.mH.sub.2m+1 and C.sub.lH.sub.2l+1 or C.sub.nH.sub.2n, C.sub.mH.sub.2m and C.sub.lH.sub.2l are straight-chain alkyl radicals or alkylene radicals, in each case having n, m and l C atoms respectively. Preferably n, m and l are independently of each other 1, 2, 3, 4, 5, 6, or 7. Table A shows the codes for the ring elements of the nuclei of the compound, Table B lists the bridging units, and Table C lists the meanings of the symbols for the left- and right-hand end groups of the molecules. The acronyms are composed of the codes for the ring elements with optional linking groups, followed by a first hyphen and the codes for the left-hand end group, and a second hyphen and the codes for the right-hand end group. Table D shows illustrative structures of compounds together with their respective abbreviations.

TABLE-US-00001 TABLE A Ring elements C [00140] D [00141] DI [00142] A [00143] AI [00144] P [00145] G [00146] GI [00147] G1 [00148] G1I [00149] U [00150] UI [00151] U1 [00152] U1I [00153] Y [00154] Y1 [00155] P(F, CI)Y [00156] P(CI,F)Y [00157] np [00158] n3f [00159] nN3fI [00160] th [00161] thI [00162] tH2f [00163] tH2fI [00164] o2f [00165] o2fI [00166] dh [00167] B [00168] B(S) [00169] O [00170] S [00171] K [00172] KI [00173] L [00174] LI [00175] F [00176] FI [00177] Bh [00178] Bh(S) [00179] Bf [00180] Bf(S) [00181] Bfi [00182] Bfi(S) [00183]

TABLE-US-00002 TABLE B Bridging units E CH.sub.2CH.sub.2 V CHCH T CC W CF.sub.2CF.sub.2 B CFCF Z COO ZI OCO X CFCH XI CHCF O CH.sub.2O OI OCH.sub.2 Q CF.sub.2O QI OCF.sub.2

TABLE-US-00003 TABLE C End groups Abbreviation Short c-C.sub.3H.sub.5 C3 c-C.sub.3H.sub.5CH.sub.2 C3-1 c-C.sub.4H.sub.7 C4 c-C.sub.5H.sub.7 C5(en) c-C.sub.5H.sub.9 C5

TABLE-US-00004 On the left individually or in On the right individually or in combination combination -n- C.sub.nH.sub.2n+1 -n C.sub.nH.sub.2n+1 -nO C.sub.nH.sub.2n+1O On OC.sub.nH.sub.2n+1 V CH.sub.2CH V CHCH.sub.2 -nV C.sub.nH.sub.2n+1CHCH -nV C.sub.nH.sub.2nCHCH.sub.2 Vn- CH.sub.2CH C.sub.nH.sub.2n Vn CHCHC.sub.nH.sub.2n+1 -nVm- C.sub.nH.sub.2n+1CHCHC.sub.mH.sub.2m -nVm C.sub.nH.sub.2nCHCHC.sub.mH.sub.2m+1 N NC N CN S SCN S NCS F F F F CL Cl CL Cl -M- CFH.sub.2 -M CFH.sub.2 -D- CF.sub.2H -D CF.sub.2H -T- CF.sub.3 -T CF.sub.3 -MO CFH.sub.2O OM CFH.sub.2O -DO CF.sub.2HO OD CF.sub.2HO -TO CF.sub.3O OT OCF.sub.3 -A- HCC -A CCH -nA- C.sub.nH.sub.2n+1CC -An CCC.sub.nH.sub.2n+1 -NA- NCCC -AN CCCN C3- c-C.sub.3H.sub.5 C3 c-C.sub.3H.sub.5 C3-1- c-C.sub.3H.sub.5CH.sub.2 -1C3 CH.sub.2-c-C.sub.3H.sub.5 C4- c-C.sub.4H.sub.7 C4 -c-C.sub.4H.sub.7 C5(en)- c-C.sub.5H.sub.7 C5(en) -c-C.sub.5H.sub.7 C5- c-C.sub.5H.sub.9 C5 -c-C.sub.5H.sub.9 On the left only in combination On the right only in combination - . . . n . . . - C.sub.nH.sub.2n - . . . n . . . C.sub.nH.sub.2n - . . . M . . . - CFH - . . . M . . . CFH - . . . D . . . - CF.sub.2 - . . . D . . . CF.sub.2 - . . . V . . . - CHCH - . . . V . . . CHCH - . . . Z . . . - COO - . . . Z . . . COO - . . . ZI . . . - OCO - . . . ZI . . . OCO - . . . K . . . - CO - . . . K . . . CO - . . . W . . . - CFCF - . . . W . . . CFCF [0454] in which n and m are each integers, and the three dots . . . are placeholders for other abbreviations from this table.

[0455] Besides the compounds of formula B, the mixtures according to the invention preferably comprise one or more compounds of the compounds mentioned below.

[0456] The following abbreviations are used: [0457] (n, m, k and l are, independently of one another, each an integer, preferably 1 to 9 preferably 1 to 7, k and l possibly may be also 0 and preferably are 0 to 4, more preferably 0 or 2 and most preferably 2, n preferably is 1, 2, 3, 4 or 5, in the combination -nO it preferably is 1, 2, 3 or 4, preferably 2 or 4, m preferably is 1, 2, 3, 4 or 5, in the combination Om it preferably is 1, 2, 3 or 4, more preferably 2 or 4. The combination IVm preferably is 2V1)

TABLE-US-00005 TABLE D Exemplary, preferred compounds of formula C [00184] [00185] [00186] [00187] [00188] Exemplary, preferred compounds of formula B having a high : [00189] [00190] [00191] [00192] [00193] [00194] [00195] [00196] [00197] Exemplary, preferred compounds of formula I having a high : [00198] [00199] [00200] [00201] [00202] [00203] [00204] [00205] [00206] Exemplary, preferred compounds of formula I having a high : [00207] [00208] [00209] [00210] [00211] [00212] [00213] [00214] [00215] [00216] [00217] [00218] [00219] [00220] [00221] [00222] [00223] [00224] [00225] [00226] Exemplary, preferred compounds of formula B having a high : [00227] [00228] [00229] [00230] [00231] [00232] [00233] [00234] [00235] [00236] [00237] [00238] [00239] Exemplary, preferred dielectrically positive compounds [00240] [00241] [00242] [00243] [00244] [00245] [00246] [00247] [00248] [00249] [00250] [00251] [00252] [00253] [00254] [00255] [00256] [00257] [00258] [00259] [00260] [00261] [00262] [00263] [00264] [00265] [00266] [00267] [00268] [00269] [00270] [00271] [00272] [00273] [00274] [00275] [00276] [00277] [00278] [00279] [00280] [00281] [00282] [00283] [00284] [00285] [00286] [00287] [00288] [00289] [00290] Exemplary, preferred dielectrically neutral compounds [00291] [00292] [00293] [00294] [00295] [00296] [00297] [00298] [00299] [00300] [00301] [00302] [00303] [00304] [00305] [00306] [00307] [00308] [00309] [00310] [00311] [00312] [00313] [00314] [00315] [00316] [00317] [00318] [00319] [00320] [00321] [00322] [00323] [00324] [00325] [00326] [00327] [00328] [00329] [00330] [00331] [00332] [00333] Further dielectrically neutral compounds [00334] [00335] [00336] [00337] [00338] [00339] [00340] [00341] [00342] [00343] [00344] [00345] [00346] [00347] [00348] [00349] Exemplary, preferred dielectrically negative compounds [00350] [00351] [00352] [00353] [00354] [00355] [00356] [00357] [00358] [00359] [00360] [00361] [00362] [00363] [00364] [00365] [00366] [00367] [00368] [00369] [00370] [00371] [00372] [00373] [00374] [00375] [00376] [00377] [00378] [00379] [00380] [00381] [00382] [00383] [00384] [00385] [00386] [00387] [00388] [00389] [00390] [00391] [00392] [00393] [00394] [00395] [00396] [00397] [00398] [00399] [00400] [00401] [00402] [00403] [00404] [00405] [00406] [00407] [00408] [00409] [00410] [00411] [00412]

[0458] Table E shows chiral dopants which are preferably employed in the mixtures according to the invention.

TABLE-US-00006 TABLE E [00413] [00414] [00415] [00416] [00417] [00418] [00419] [00420] [00421] [00422] [00423] [00424] [00425]

[0459] In a preferred embodiment of the present invention, the media according to the invention comprise one or more compounds selected from the group of the compounds from Table E.

[0460] Table F shows stabilisers which can preferably be employed in the mixtures according to the invention in addition to the compounds of formula B. The parameter n here denotes an integer in the range from 1 to 12. In particular, the phenol derivatives shown can be employed as additional stabilisers since they act as antioxidants.

TABLE-US-00007 TABLE F [00426] [00427] [00428] [00429] [00430] [00431] [00432] [00433] [00434] [00435] [00436] [00437] [00438] [00439] [00440] [00441] [00442] [00443] [00444] [00445] [00446] [00447] [00448] [00449] [00450] [00451] [00452] [00453] [00454] [00455] [00456] [00457] [00458] [00459] [00460] [00461] [00462] [00463] [00464] [00465] [00466] [00467] [00468] [00469]

[0461] In a preferred embodiment of the present invention, the media according to the invention comprise one or more compounds selected from the group of the compounds from Table F, in particular one or more compounds selected from the group of the compounds of the following two formulae

##STR00470##

EXAMPLES

[0462] The following examples explain the present invention without restricting it in any way. However, the physical properties make it clear to the person skilled in the art what properties can be achieved and in what ranges they can be modified. In particular, the combination of the various properties which can preferably be achieved is thus well defined for the person skilled in the art.

[0463] In the following table the following abbreviations for the end groups are used

TABLE-US-00008 Abbreviation Short Structure C-C.sub.3H.sub.5 C3 [00471] C-C.sub.3H.sub.5CH.sub.2 C3-1 [00472] C-C.sub.4H.sub.7 C4 [00473] C-C.sub.5H.sub.7 C5(en) [00474] C-C.sub.5H.sub.9 C5 [00475]

[0464] The physical properties are given at a temperature of 20 C. and .sub.1 is given in mPa.Math.s.

TABLE-US-00009 Compound Examples/Examples of preferentially used compounds C-1 [00476] No: 1- R.sup.C1 R.sup.C2 Phase Range; properties 1 CH.sub.3 CH.sub.3 2 C.sub.2H.sub.5 CH.sub.3 K 136 I 3 n-C.sub.3H.sub.7 CH.sub.3 K 161 I 4 n-C.sub.4H.sub.9 CH.sub.3 K 130 I 5 n-C.sub.5H.sub.11 CH.sub.3 6 n-C.sub.6H.sub.13 CH.sub.3 7 n-C.sub.7H.sub.15 CH.sub.3 8 n-C.sub.8H.sub.17 CH.sub.3 9 CH.sub.3 C.sub.2H.sub.5 10 C.sub.2H.sub.5 C.sub.2H.sub.5 11 n-C.sub.3H.sub.7 C.sub.2H.sub.5 12 n-C.sub.4H.sub.9 C.sub.2H.sub.5 13 n-C.sub.5H.sub.11 C.sub.2H.sub.5 14 n-C.sub.6H.sub.13 C.sub.2H.sub.5 15 n-C.sub.7H.sub.15 C.sub.2H.sub.5 16 n-C.sub.8H.sub.17 C.sub.2H.sub.5 17 C-C.sub.3H.sub.5 C.sub.2H.sub.5 18 c-C.sub.3H.sub.5CH.sub.2 C.sub.2H.sub.5 19 c-C.sub.4H.sub.7 C.sub.2H.sub.5 20 c-C.sub.5H.sub.7 C.sub.2H.sub.5 21 c-C.sub.5H.sub.9 C.sub.2H.sub.5 22 CH.sub.3 n-C.sub.3H.sub.7 23 C.sub.2H.sub.5 n-C.sub.3H.sub.7 24 n-C.sub.3H.sub.7 n-C.sub.3H.sub.7 25 n-C.sub.4H.sub.9 n-C.sub.3H.sub.7 26 n-C.sub.5H.sub.11 n-C.sub.3H.sub.7 27 n-C.sub.6H.sub.13 n-C.sub.3H.sub.7 28 n-C.sub.7H.sub.15 n-C.sub.3H.sub.7 29 n-C.sub.8H.sub.17 n-C.sub.3H.sub.7 30 CH.sub.3 n-C.sub.4H.sub.9 31 C.sub.2H.sub.5 n-C.sub.4H.sub.9 32 n-C.sub.3H.sub.7 n-C.sub.4H.sub.9 33 n-C.sub.4H.sub.9 n-C.sub.4H.sub.9 34 n-C.sub.5H.sub.11 n-C.sub.4H.sub.9 35 n-C.sub.6H.sub.13 n-C.sub.4H.sub.9 36 n-C.sub.7H.sub.15 n-C.sub.4H.sub.9 37 n-C.sub.8H.sub.17 n-C.sub.4H.sub.9 38 CH.sub.3 n-C.sub.5H.sub.11 39 C.sub.2H.sub.5 n-C.sub.5H.sub.11 40 n-C.sub.3H.sub.7 n-C.sub.5H.sub.11 41 n-C.sub.4H.sub.9 n-C.sub.5H.sub.11 42 n-C.sub.5H.sub.11 n-C.sub.5H.sub.11 43 n-C.sub.6H.sub.13 n-C.sub.5H.sub.11 44 n-C.sub.7H.sub.15 n-C.sub.5H.sub.11 45 n-C.sub.8H.sub.17 n-C.sub.5H.sub.11 46 n-C.sub.3H.sub.7 O-n-C.sub.2H.sub.5 K 150 I 47 n-C.sub.3H.sub.7 O-n-C.sub.3H.sub.7 K 136 I 48 n-C.sub.3H.sub.7 O-n-C.sub.4H.sub.9 K 127 (N) 109 I 49 n-C.sub.3H.sub.7 O-n-C.sub.5H.sub.11 K 131 N (111.5) I 50 n-C.sub.4H.sub.9 O-n-C.sub.3H.sub.7 K 133 I 51 n-C.sub.4H.sub.9 O-n-C.sub.4H.sub.9 K 124 I 52 n-C.sub.4H.sub.9 O-n-C.sub.5H.sub.11 K 118 N (113.0) I

TABLE-US-00010 Further Compound Examples/Examples of preferentially used compounds C-3 [00477] No: 2- R.sup.C1 R.sup.C2 Phase Range; properties 1 CH.sub.3 CH.sub.3 2 C.sub.2H.sub.5 CH.sub.3 K 103 N 114.3 I 3 n-C.sub.3H.sub.7 CH.sub.3 K 125 N 145.0 I 4 n-C.sub.4H.sub.9 CH.sub.3 K 110 N 143.3 I 5 n-C.sub.5H.sub.11 CH.sub.3 6 n-C.sub.6H.sub.13 CH.sub.3 7 n-C.sub.7H.sub.15 CH.sub.3 8 n-C.sub.8H.sub.17 CH.sub.3 9 CH.sub.3 C.sub.2H.sub.5 10 C.sub.2H.sub.5 C.sub.2H.sub.5 11 n-C.sub.3H.sub.7 C.sub.2H.sub.5 K 113 N 133.3 I 12 n-C.sub.4H.sub.9 C.sub.2H.sub.5 13 n-C.sub.5H.sub.11 C.sub.2H.sub.5 14 n-C.sub.6H.sub.13 C.sub.2H.sub.5 15 n-C.sub.7H.sub.15 C.sub.2H.sub.5 16 n-C.sub.8H.sub.17 C.sub.2H.sub.5 17 CH.sub.3 n-C.sub.3H.sub.7 18 C.sub.2H.sub.5 n-C.sub.3H.sub.7 19 n-C.sub.3H.sub.7 n-C.sub.3H.sub.7 K 101 N 143.3 I 20 n-C.sub.4H.sub.9 n-C.sub.3H.sub.7 21 n-C.sub.5H.sub.11 n-C.sub.3H.sub.7 22 n-C.sub.6H.sub.13 n-C.sub.3H.sub.7 23 n-C.sub.7H.sub.15 n-C.sub.3H.sub.7 24 n-C.sub.8H.sub.17 n-C.sub.3H.sub.7 25 CH.sub.3 n-C.sub.4H.sub.9 26 C.sub.2H.sub.5 n-C.sub.4H.sub.9 27 n-C.sub.3H.sub.7 n-C.sub.4H.sub.9 K 85 SmA (85) N 135.2 I 28 n-C.sub.4H.sub.9 n-C.sub.4H.sub.9 29 n-C.sub.5H.sub.11 n-C.sub.4H.sub.9 30 n-C.sub.6H.sub.13 n-C.sub.4H.sub.9 31 n-C.sub.7H.sub.15 n-C.sub.4H.sub.9 32 n-C.sub.8H.sub.17 n-C.sub.4H.sub.9 33 CH.sub.3 n-C.sub.5H.sub.11 34 C.sub.2H.sub.5 n-C.sub.5H.sub.11 35 n-C.sub.3H.sub.7 n-C.sub.5H.sub.11 K 81 SmA 93 N 145.9 I 36 n-C.sub.4H.sub.9 n-C.sub.5H.sub.11 37 n-C.sub.5H.sub.11 n-C.sub.5H.sub.11 38 n-C.sub.6H.sub.13 n-C.sub.5H.sub.11 39 n-C.sub.7H.sub.15 n-C.sub.5H.sub.11 40 n-C.sub.8H.sub.17 n-C.sub.5H.sub.11 41 n-C.sub.2H.sub.5 O-C.sub.2H.sub.5 K 107 N 155.0 I 42 n-C.sub.2H.sub.5 O-n-C.sub.3H.sub.7 K 112 N 147.3 I 43 n-C.sub.2H.sub.5 O-n-C.sub.4H.sub.9 K 98 N 149.4 I 44 n-C.sub.2H.sub.5 O-n-C.sub.5H.sub.11 K 88 N 144.2 I 45 n-C.sub.3H.sub.7 O-C.sub.2H.sub.5 K 118 N 179.2 I 46 n-C.sub.3H.sub.7 O-n-C.sub.4H.sub.9 K 111 N 169.7 I 47 n-C.sub.3H.sub.7 O-n-C.sub.3H.sub.7 K 133 N 171.5 I 48 n-C.sub.3H.sub.7 O-n-C.sub.5H.sub.11 K 104 N 165.2 I 49 n-C.sub.4H.sub.9 O-C.sub.2H.sub.5 K 124 N 175.5 I 50 n-C.sub.4H.sub.9 O-n-C.sub.3H.sub.7 K 124 N 169.0 I 51 n-C.sub.4H.sub.9 O-n-C.sub.4H.sub.9 K 111 SmC (106) N 169.6 I 52 n-C.sub.4H.sub.9 O-n-C.sub.5H.sub.11 K 102 N 164.6 I 53 n-C.sub.5H.sub.11 O-C.sub.2H.sub.5 K 128 N 179.6 I

Mixture Examples

[0465] In the following exemplary mixtures are disclosed.

Comparative Example 1

[0466] The following mixture (CM-1) is prepared and investigated.

TABLE-US-00011 Mixture CM-1 Composition Compound Concentration No. Abbreviation /% by weight Physical properties 1 CC-3-V 49.5 T(N, I) = 80.5 C. 2 CCP-V-1 6.0 n(20 C., 589 nm) = 0.0996 3 PGP-2-2V 1.0 n.sub.e(20 C., 589 nm) = 1.5829 4 PUQU-3-F 9.0 (20 C., 1 kHz) = 2.3 5 CDUQU-3-F 7.5 .sub.(20 C., 1 kHz) = 5.3 6 PPGU-3-F 0.5 .sub.(20 C., 1 kHz) = 7.7 7 CPY-2-O2 3.0 k.sub.11(20 C.) = 13.3 pN 8 CPY-3-O2 10.0 k.sub.33(20 C.) = 14.2 pN 9 COB(S)-2-O4 12.5 V.sub.0(20 C.) = 2.52 V 10 Y-4O-O4 1.0 .sub.1(20 C.) = 70 mPa .Math. s 100.0

[0467] This mixture, mixture CM-1, offers rather high transmittance.

Example 1

[0468] The following mixture (M-1) is prepared and investigated.

TABLE-US-00012 Mixture M-1 Composition Compound Concentration No. Abbreviation /% by weight Physical properties 1 CC-3-V 47.0 T(N, I) = 78.0 C. 2 CCP-V-1 13.5 n(20 C., 589 nm) = 0.0993 3 PGP-2-2V 1.0 n.sub.e(20 C., 589 nm) = 1.5823 4 PUQU-3-F 4.0 (20 C., 1 kHz) = 2.3 5 CDUQU-3-F 7.5 .sub.(20 C., 1 kHz) = 5.2 6 PPGU-3-F 0.5 .sub.(20 C., 1 kHz) = 7.5 7 Y-4O-O4 3.0 k.sub.11(20 C.) = 13.7 pN 8 COB(S)-2-O4 6.5 k.sub.33(20 C.) = 13.6 pN 9 LB-3-T 7.0 V.sub.0(20 C.) = 2.58 V 10 LB(S)-3-OT 10.0 .sub.1(20 C.) = 65 mPa .Math. s 100.0

[0469] This mixture, mixture M-1, has a faster response time parameter and high transmittance.

Example 2

[0470] The following mixture (M-2) is prepared and investigated.

TABLE-US-00013 Mixture M-2 Composition Compound Concentration No. Abbreviation /% by weight Physical properties 1 CC-3-V 48.0 T(N, I) = 79.0 C. 2 CCP-V-1 5.5 n(20 C., 589 nm) = 0.1004 3 PUQU-3-F 2.5 n.sub.e(20 C., 589 nm) = 1.5822 4 CDUQU-3-F 11.0 (20 C., 1 kHz) = 2.4 5 PPGU-3-F 0.5 .sub.(20 C., 1 kHz) = 5.9 6 Y-4O-O4 3.0 .sub.(20 C., 1 kHz) = 8.3 7 CPY-3-O2 6.0 k.sub.11(20 C.) = 14.0 pN 8 COB(S)-2-O4 6.5 k.sub.33(20 C.) = 13.8 pN 9 LB-3-T 7.0 V.sub.0(20 C.) = 2.55 V 10 LB(S)-3-OT 10.0 .sub.1/k.sub.11(20 C.) = 74 mPa .Math. s 100.0

[0471] This mixture, mixture M-2, has a higher transmittance.

Example 3

[0472] The following mixture (M-3) is prepared and investigated.

TABLE-US-00014 Mixture M-3 Composition Compound Concentration No. Abbreviation /% by weight Physical properties 1 CC-3-V 52.0 T(N, I) = 74.2 C. 2 PP-1-2V1 2.5 n(20 C., 589 nm) = 0.0990 3 CCQU-3-F 3.0 n.sub.e(20 C., 589 nm) = 1.5798 4 PUQU-2-F 2.5 (20 C., 1 kHz) = 2.0 5 DGUQU-4-F 6.5 .sub.(20 C., 1 kHz) = 5.7 6 CY-3-O4 2.5 .sub.(20 C., 1 kHz) = 7.7 7 CLY-3-O2 7.0 k.sub.11(20 C.) = 13.8 pN 8 COB(S)-2-O4 7.0 k.sub.33(20 C.) = 13.5 pN 9 LB-3-T 7.5 V.sub.0(20 C.) = 2.77 V 10 LB(S)-3-OT 9.5 .sub.1(20 C.) = 65 mPa .Math. s 100.0

[0473] This mixture, mixture M-3, has a fast response time and high transmittance.

Example 4

[0474] The following mixture (M-4) is prepared and investigated.

TABLE-US-00015 Mixture M-4 Composition Compound Concentration No. Abbreviation /% by weight Physical properties 1 CC-3-V 47.0 T(N, I) = 76.0 C. 2 CC-3-V1 5.0 n(20 C., 589 nm) = 0.1000 3 PP-1-2V1 2.5 n.sub.e(20 C., 589 nm) = 1.5806 4 CLY-3-O2 7.0 (20 C., 1 kHz) = 2.0 5 CCQU-3-F 3.0 .sub.(20 C., 1 kHz) = 5.7 6 PUQU-2-F 2.5 .sub.(20 C., 1 kHz) = 7.7 7 DGUQU-4-F 6.5 k.sub.11(20 C.) = 14.3 pN 8 CY-3-O4 2.5 k.sub.33(20 C.) = 13.7 pN 9 COB(S)-2-O4 7.0 V.sub.0(20 C.) = 2.83 V 10 LB-3-T 7.5 .sub.1(20 C.) = 69 mPa .Math. s 11 LB(S)-3-OT 9.5 100.0

[0475] This mixture, mixture M-4, has a good combination of properties.

Example 5

[0476] The following mixture (M-5) is prepared and investigated.

TABLE-US-00016 Mixture M-5 Composition Compound Concentration No. Abbreviation /% by weight Physical properties 1 CC-3-V 55.0 T(N, I) = 76.5 C. 2 PGP-2-2V 1.0 n(20 C., 589 nm) = 0.1000 3 CCP-2-OT 6.5 n.sub.e(20 C., 589 nm) = 1.5809 4 DPGU-4-F 3.5 (20 C., 1 kHz) = 1.9 5 DGUQU-4-F 5.0 .sub.(20 C., 1 kHz) = 5.5 6 PY-4-O2 2.5 .sub.(20 C., 1 kHz) = 7.4 7 COB(S)-2-O4 10.0 k.sub.11(20 C.) = 14.2 pN 8 LB-3-T 10.0 k.sub.33(20 C.) = 12.5 pN 9 LB(S)-3-OT 6.5 V.sub.0(20 C.) = 2.91 V 100.0 .sub.1(20 C.) = 68 mPa .Math. s

[0477] This mixture, mixture M-5, has a good combination of properties

Example 6

[0478] The following mixture (M-6) is prepared and investigated.

TABLE-US-00017 Mixture M-6 Composition Compound Concentration No. Abbreviation /% by weight Physical properties 1 CC-3-V 45.0 T(N, I) = 80.0 C. 2 CCP-V-1 13.5 n(20 C., 589 nm) = 0.0998 3 PUQU-3-F 5.0 n.sub.e(20 C., 589 nm) = 1.5826 4 CDUQU-3-F 10.0 (20 C., 1 kHz) = 3.2 5 PPGU-3-F 0.5 .sub.(20 C., 1 kHz) = 5.4 6 Y-4O-O4 2.5 .sub.(20 C., 1 kHz) = 8.5 7 COB(S)-2-O4 7.0 k.sub.11(20 C.) = 14.0 pN 8 LB-3-T 7.0 k.sub.33(20 C.) = 14.2 pN 9 LB(S)-3-OT 9.5 V.sub.0(20 C.) = 2.21 V 100.0 .sub.1(20 C.) = 70 mPa .Math. s

[0479] This mixture, mixture M-6, has a good combination of properties

Example 7

[0480] The following mixture (M-7) is prepared and investigated.

TABLE-US-00018 Mixture M-7 Composition Compound Concentration No. Abbreviation /% by weight Physical properties 1 CC-3-V 46.5 T(N, I) = 79.5 C. 2 CCP-V-1 14.0 n(20 C., 589 nm) = 0.0996 3 PGP-2-2V 1.0 n.sub.e(20 C., 589 nm) = 1.5830 4 PUQU-3-F 3.5 (20 C., 1 kHz) = 2.3 5 CDUQU-3-F 8.0 .sub.(20 C., 1 kHz) = 5.3 6 PPGU-3-F 0.5 .sub.(20 C., 1 kHz) = 7.5 7 Y-4O-O4 3.0 k.sub.11(20 C.) = 13.9 pN 8 COB(S)-2-O4 7.0 k.sub.33(20 C.) = 14.0 pN 9 LB-3-T 7.0 V.sub.0(20 C.) = 2.61 V 10 LB(S)-3-OT 9.5 .sub.1(20 C.) = 67 mPa .Math. s 100.0

[0481] This mixture, mixture M-7, has a good combination of properties.

Example 8

[0482] The following mixture (M-8) is prepared and investigated.

TABLE-US-00019 Mixture M-8 Composition Compound Concentration No. Abbreviation /% by weight Physical properties 1 CC-3-V 51.0 T(N, I) = 80.0 C. 2 CCP-3-OT 9.5 n(20 C., 589 nm) = 0.0993 3 DPGU-4-F 3.0 n.sub.e(20 C., 589 nm) = 1.5784 4 CDUQU-3-F 4.5 (20 C., 1 kHz) = 3.0 5 DGUQU-4-F 4.0 .sub.(20 C., 1 kHz) = 5.3 6 PY-4-O2 4.0 .sub.(20 C., 1 kHz) = 8.4 7 COB(S)-2-O4 7.0 k.sub.11(20 C.) = 14.7 pN 8 LB-3-T 7.0 k.sub.33(20 C.) = 13.7 pN 9 LB(S)-3-OT 10.0 V.sub.0(20 C.) = 2.32 V 100.0 .sub.1(20 C.) = 69 mPa .Math. s

[0483] This mixture, mixture M-8, has a good combination of properties.

Example 9

[0484] The following mixture (M-9) is prepared and investigated.

TABLE-US-00020 Mixture M-9 Composition Compound Concentration No. Abbreviation /% by weight Physical properties 1 CC-3-V 51.0 T(N, I) = 79.5 C. 2 CCP-V-1 1.5 n(20 C., 589 nm) = 0.0985 3 CCP-3-OT 9.5 n.sub.e(20 C., 589 nm) = 1.5780 4 DPGU-4-F 2.5 (20 C., 1 kHz) = 2.4 5 CDUQU-3-F 4.0 .sub.(20 C., 1 kHz) = 5.3 6 DGUQU-4-F 3.0 .sub.(20 C., 1 kHz) = 7.7 7 PY-4-O2 4.5 k.sub.11(20 C.) = 14.8 pN 8 COB(S)-2-O4 7.0 k.sub.33(20 C.) = 13.2 pN 9 LB-3-T 7.0 V.sub.0(20 C.) = 2.62 V 10 LB(S)-3-OT 10.0 .sub.1(20 C.) = 65 mPa .Math. s 100.0

[0485] This mixture, mixture M-9, has a good combination of properties.

Example 10

[0486] The following mixture (M-10) is prepared and investigated.

TABLE-US-00021 Mixture M-10 Composition Compound Concentration No. Abbreviation /% by weight Physical properties 1 CC-3-V 49.5 T(N, I) = 79.5 C. 2 CCP-V-1 1.5 n(20 C., 589 nm) = 0.1001 3 CCP-3-OT 9.5 n.sub.e(20 C., 589 nm) = 1.5799 4 DPGU-4-F 2.5 (20 C., 1 kHz) = 2.5 5 CDUQU-3-F 4.5 .sub.(20 C., 1 kHz) = 5.4 6 DGUQU-4-F 3.0 .sub.(20 C., 1 kHz) = 7.9 7 PY-4-O2 5.5 k.sub.11(20 C.) = 14.7 pN 8 COB(S)-2-O4 7.0 k.sub.33(20 C.) = 13.6 pN 9 LB-3-T 7.0 V.sub.0(20 C.) = 2.58 V 10 LB(S)-3-OT 10.0 .sub.1(20 C.) = 68 mPa .Math. s 100.0

[0487] This mixture, mixture M-10, has a good combination of properties.

Example 11

[0488] The following mixture (M-11) is prepared and investigated.

TABLE-US-00022 Mixture M-11 Composition Compound Concentration No. Abbreviation /% by weight Physical properties 1 CC-3-V 49.0 T(N, I) = 78.0 C. 2 CCP-V-1 2.5 n(20 C., 589 nm) = 0.0992 3 CCP-3-OT 5.5 n.sub.e(20 C., 589 nm) = 1.5798 4 CCU-V-F 5.0 (20 C., 1 kHz) = 2.4 5 DPGU-4-F 2.5 .sub.(20 C., 1 kHz) = 5.4 6 CDUQU-3-F 4.5 .sub.(20 C., 1 kHz) = 7.8 7 DGUQU-4-F 2.0 k.sub.11(20 C.) = 13.8 pN 8 PY-4-O2 5.0 k.sub.33(20 C.) = 13.6 pN 9 COB(S)-2-O4 7.0 V.sub.0(20 C.) = 2.54 V 10 LB-3-T 7.0 .sub.1(20 C.) = 65 mPa .Math. s 11 LB(S)-3-OT 10.0 100.0

[0489] This mixture, mixture M-11, has a good combination of properties.

Example 12

[0490] The following mixture (M-12) is prepared and investigated.

TABLE-US-00023 Mixture M-12 Composition Compound Concentration No. Abbreviation /% by weight Physical properties 1 CC-3-V 51.0 T(N, I) = 85.0 C. 2 PP-1-2V1 0.5 n(20 C., 589 nm) = 0.1000 3 CCP-3-OT 8.5 n.sub.e(20 C., 589 nm) = 1.5792 4 DGUQU-4-F 5.5 (20 C., 1 kHz) = 2.7 5 CDUQU-3-F 5.0 .sub.(20 C., 1 kHz) = 5.5 6 CPY-3-O2 3.5 .sub.(20 C., 1 kHz) = 8.2 7 COB(S)-2-O4 9.0 k.sub.11(20 C.) = 15.3 pN 8 LB-3-T 7.0 k.sub.33(20 C.) = 14.7 pN 9 LB(S)-3-OT 10.0 V.sub.0(20 C.) = 2.53 V 100.0 .sub.1(20 C.) = 76 mPa .Math. s

[0491] This mixture, mixture M-12, has a good combination of properties.

Example 13

[0492] The following mixture (M-13) is prepared and investigated.

TABLE-US-00024 Mixture M-13 Composition Compound Concentration No. Abbreviation /% by weight Physical properties 1 CC-3-V 50.5 T(N, I) = 78.0 C. 2 CCP-V-1 5.0 n(20 C., 589 nm) = 0.0996 3 PP-1-2V1 1.0 n.sub.e(20 C., 589 nm) = 1.5816 4 PPGU-3-F 0.5 (20 C., 1 kHz) = 2.4 5 CDUQU-3-F 11.0 .sub.(20 C., 1 kHz) = 5.9 6 PGUQU-3-F 2.5 .sub.(20 C., 1 kHz) = 8.2 7 Y-4O-O4 3.0 k.sub.11(20 C.) = 14.0 pN 8 COB(S)-2-O4 11.0 k.sub.33(20 C.) = 13.6 pN 9 LB-3-T 7.0 V.sub.0(20 C.) = 2.57 V 10 LB(S)-3-OT 8.5 .sub.1(20 C.) = 71 mPa .Math. s 100.0

[0493] This mixture, mixture M-13, has a good combination of properties.

Example 14

[0494] The following mixture (M-14) is prepared and investigated.

TABLE-US-00025 Mixture M-14 Composition Compound Concentration No. Abbreviation /% by weight Physical properties 1 CC-3-V 47.0 T(N, I) = 79.0 C. 2 CCP-V-1 4.5 n(20 C., 589 nm) = 0.0993 3 PPGU-3-F 0.5 n.sub.e(20 C., 589 nm) = 1.5804 4 PUQU-3-F 4.0 (20 C., 1 kHz) = 2.3 5 CDUQU-3-F 8.0 .sub.(20 C., 1 kHz) = 6.1 6 PGUQU-3-F 1.5 .sub.(20 C., 1 kHz) = 8.4 7 Y-4O-O4 3.0 k.sub.11(20 C.) = 13.9 pN 8 CCY-3-O2 8.0 k.sub.33(20 C.) = 14.2 pN 9 COB(S)-2-O4 6.5 V.sub.0(20 C.) = 2.60 V 10 LB-3-T 7.0 .sub.1(20 C.) = 78 mPa .Math. s 11 LB(S)-3-OT 10.0 100.0

[0495] This mixture, mixture M-14, has a good combination of properties.

Example 15

[0496] The following mixture (M-15) is prepared and investigated.

TABLE-US-00026 Mixture M-15 Composition Compound Concentration No. Abbreviation /% by weight Physical properties 1 CC-3-V 48.0 T(N, I) = 80.0 C. 2 CCP-V-1 5.5 n(20 C., 589 nm) = 0.1006 3 PPGU-3-F 0.5 n.sub.e(20 C., 589 nm) = 1.5822 4 PUQU-3-F 1.5 (20 C., 1 kHz) = 2.2 5 CDUQU-3-F 11.5 .sub.(20 C., 1 kHz) = 5.9 6 Y-4O-O4 3.0 .sub.(20 C., 1 kHz) = 8.2 7 CPY-3-O2 6.5 k.sub.11(20 C.) = 14.1 pN 8 COB(S)-2-O4 6.5 k.sub.33(20 C.) = 13.8 pN 9 LB-3-T 7.0 V.sub.0(20 C.) = 2.66 V 10 LB(S)-3-OT 10.0 .sub.1(20 C.) = 75 mPa .Math. s 100.0

[0497] This mixture, mixture M-15, has a good combination of properties.

Example 16

[0498] The following mixture (M-16) is prepared and investigated.

TABLE-US-00027 Mixture M-16 Composition Concentra- tion Compound /% by No. Abbreviation weight Physical properties 1 CC-3-V 29.0 T(N, I) = 78.5 C. 2 CC-V-V1 20.0 n(20 C., 589 nm) = 0.1001 3 CCP-V-1 11.0 n.sub.e(20 C., 589 nm) = 1.5830 4 CDUQU-3-F 2.5 (20 C., 1 kHz) = 2.3 5 DGUQU-4-F 3.5 .sub.(20 C., 1 kHz) = 5.4 6 PGUQU-4-F 5.5 .sub.(20 C., 1 kHz) = 7.7 7 Y-4O-O4 4.0 k.sub.11(20 C.) = 13.1 pN 8 CLY-3-O2 9.0 k.sub.11/k.sub.33(20 C.) = 1.15 pN 9 COB(S)-2-O4 2.5 V.sub.0(20 C.) = 2.30 V 10 LB-3-T 9.0 11 LB(S)-3-OT 4.0 100.0

[0499] This mixture, mixture M-16, has a good combination of properties.

Example 17

[0500] The following mixture (M-17) is prepared and investigated.

TABLE-US-00028 Mixture M-17 Composition Concentra- tion Compound /% by No. Abbreviation weight Physical properties 1 CC-3-V 29.0 T(N, I) = 80.0 C. 2 CC-V-V1 25.0 n(20 C., 589 nm) = 0.1005 3 CCP-V-1 5.0 n.sub.e(20 C., 589 nm) = 1.5818 4 CDUQU-3-F 7.0 (20 C., 1 kHz) = 2.1 5 CLY-3-O2 8.0 .sub.(20 C., 1 kHz) = 5.4 6 COB(S)-2-O4 4.0 .sub.(20 C., 1 kHz) = 7.5 7 PGUQU-4-F 4.5 k.sub.11(20 C.) = 13.6 pN 8 Y-4O-O4 2.0 k.sub.33(20 C.) = 15.3 pN 9 LB-3-T 10.0 V.sub.0(20 C.) = 2.71 V 10 LB(S)-3-OT 5.5 100.0

[0501] This mixture, mixture M-17, has a good combination of properties.

Example 18

[0502] The following mixture (M-18) is prepared and investigated.

TABLE-US-00029 Mixture M-18 Composition Concentra- tion Compound /% by No. Abbreviation weight Physical properties 1 CC-3-V 48.5 T(N, I) = 77.1 C. 2 CCP-V-1 8.0 n(20 C., 589 nm) = 0.1004 3 CDUQU-3-F 3.5 n.sub.e(20 C., 589 nm) = 1.5836 4 PGUQU-3-F 5.5 (20 C., 1 kHz) = 2.2 5 PGUQU-4-F 4.0 .sub.(20 C., 1 kHz) = 5.4 6 PPGU-3-F 0.5 .sub.(20 C., 1 kHz) = 7.6 7 CY-3-O2 10.0 k.sub.11(20 C.) = 12.8 pN 8 COB(S)-2-O4 10.0 k.sub.33(20 C.) = 14.4 pN 9 LB(S)-3-OT 10.0 100.0

[0503] This mixture, mixture M-18, has a good combination of properties.

Example 19

[0504] The following mixture (M-19) is prepared and investigated.

TABLE-US-00030 Mixture M-19 Composition Compound Concentration No. Abbreviation /% by weight Physical properties 1 CC-3-V 52.5 T(N, I) = 78.6 C. 2 CCP-V-1 4.0 n(20 C., 589 nm) = 0.1005 3 CDUQU-3-F 7.5 n.sub.e(20 C., 589 nm) = 1.5820 4 PGUQU-3-F 5.5 (20 C., 1 kHz) = 2.4 5 PPGU-3-F 0.5 .sub.(20 C., 1 kHz) = 5.7 6 CY-3-O2 4.0 .sub.(20 C., 1 kHz) = 8.1 7 COB(S)-2-O4 10.0 k.sub.11(20 C.) = 13.8 pN 8 LB-3-T 8.0 k.sub.33(20 C.) = 14.4 pN 9 LB(S)-3-OT 8.0 .sub.1(20 C.) = 77 mPa .Math. s 100.0

[0505] This mixture, mixture M-19, has a good combination of properties.

Example 20

[0506] The following mixture (M-20) is prepared and investigated.

TABLE-US-00031 Mixture M-20 Composition Compound Concentration No. Abbreviation /% by weight Physical properties 1 CC-3-V 52.5 T(N, I) = 77.9 C. 2 CCP-V-1 4.0 n(20 C., 589 nm) = 0.1008 3 APUQU-2-F 5.0 n.sub.e(20 C., 589 nm) = 1.5834 4 APUQU-3-F 8.0 (20 C., 1 kHz) = 2.4 5 PPGU-3-F 0.5 .sub.(20 C., 1 kHz) = 5.6 6 CY-3-O2 4.0 .sub.(20 C., 1 kHz) = 8.0 7 COB(S)-2-O4 10.0 k.sub.11(20 C.) = 13.8 pN 8 LB-3-T 8.0 k.sub.33(20 C.) = 13.7 pN 9 LB(S)-3-OT 8.0 .sub.1(20 C.) = 80 mPa .Math. s 100.0

[0507] This mixture, mixture M-20, has a good combination of properties.

Example 21

[0508] The following mixture (M-21) is prepared and investigated.

TABLE-US-00032 Mixture M-21 Composition Concentra- tion Compound /% by No. Abbreviation weight Physical properties 1 CC-3-V 42.5 T(N, I) = 79 C. 2 CCP-V-1 13.0 n(20 C., 589 nm) = 0.1013 3 CDUQU-3-F 8.0 n.sub.e(20 C., 589 nm) = 1.5841 4 PGUQU-3-F 5.0 (20 C., 1 kHz) = 2.5 5 PPGU-3-F 0.5 .sub.(20 C., 1 kHz) = 5.7 6 CY-3-O2 10.0 .sub.(20 C., 1 kHz) = 8.2 7 COB(S)-2-O4 5.0 k.sub.11(20 C.) = 13.3 pN 8 LB-3-T 8.0 k.sub.33(20 C.) = 14.4 pN 9 LB(S)-3-OT 8.0 LTS.sub.bulk(20 C.) = 1,000 h 100.0

[0509] This mixture, mixture M-21, has a good combination of properties.

Example 22

[0510] The following mixture (M-22) is prepared and investigated.

TABLE-US-00033 Mixture M-22 Composition Concentra- tion Compound /% by No. Abbreviation weight Physical properties 1 CC-3-V 44.0 T(N, I) = 85.8 C. 2 CC-3-V1 5.0 n(20 C., 589 nm) = 0.1004 3 CC-3-2V1 5.0 n.sub.e(20 C., 589 nm) = 1.5796 4 CCP-V2-1 2.0 (20 C., 1 kHz) = 2.4 5 CLP-3-T 3.0 .sub.(20 C., 1 kHz) = 5.3 6 PPGU-3-F 0.5 .sub.(20 C., 1 kHz) = 7.6 7 CCQU-3-F 4.0 k.sub.11(20 C.) = 17.4 pN 8 CDUQU-3-F 7.5 k.sub.33(20 C.) = 15.0 pN 9 PGUQU-4-F 1.0 10 COB(S)-2-O4 8.0 11 LB(S)-3-OT 10.0 12 LB-3-T 10.0 100.0

[0511] This mixture, mixture M-22, has a good combination of properties.

Example 23

[0512] The following mixture (M-23) is prepared and investigated.

TABLE-US-00034 Mixture M-23 Composition Compound Concentration No. Abbreviation /% by weight Physical properties 1 CC-3-V 31.5 T(N, I) = 79.6 C. 2 CC-3-V1 8.0 n(20 C., 589 nm) = 0.1028 3 CC-3-2V1 11.0 n.sub.e(20 C., 589 nm) = 1.5803 4 PUQU-3-F 7.5 (20 C., 1 kHz) = 13.3 5 APUQU-2-F 8.0 .sub.(20 C., 1 kHz) = 4.4 6 APUQU-3-F 2.0 .sub.(20 C., 1 kHz) = 17.6 7 CDUQU-3-F 10.5 k.sub.11(20 C.) = 14.1 pN 8 DGUQU-4-F 5.0 k.sub.33(20 C.) = 14.1 pN 9 PGUQU-4-F 8.0 .sub.1(20 C.) = 88 mPa .Math. s 10 COB(S)-2-O4 3.0 11 LB(S)-3-OT 5.5 100.0

[0513] This mixture, mixture M-23, has a good combination of properties.

Example 24

[0514] The following mixture (M-24) is prepared and investigated.

TABLE-US-00035 Mixture M-24 Composition Concentra- tion Compound /% by No. Abbreviation weight Physical properties 1 CC-3-V 23.5 T(N, I) = 95.6 C. 2 CC-3-V1 10.0 n(20 C., 589 nm) = 0.1112 3 CC-2-3 10.0 n.sub.e(20 C., 589 nm) = 1.5951 4 CCP-V-1 11.0 (20 C., 1 kHz) = 6.2 5 CCP-V2-1 4.5 .sub.(20 C., 1 kHz) = 4.2 6 CLP-3-T 8.0 .sub.(20 C., 1 kHz) = 10.5 7 DGUQU-4-F 4.0 k.sub.11(20 C.) = 18.1 pN 8 PGUQU-3-F 6.0 k.sub.33(20 C.) = 16.6 pN 9 PGUQU-4-F 8.0 10 PGUQU-5-F 2.0 11 COB(S)-2-O4 8.0 12 LB-3-T 5.0 100.0

[0515] This mixture, mixture M-24, has a good combination of properties.

Example 25

[0516] The following mixture (M-25) is prepared and investigated.

TABLE-US-00036 Mixture M-25 Composition Compound Concentration No. Abbreviation /% by weight Physical properties 1 CC-3-V 26.0 T(N, I) = 98.6 C. 2 CC-3-V1 10.0 n(20 C., 589 nm) = 0.1112 3 CC-3-2V1 3.5 n.sub.e(20 C., 589 nm) = 1.5934 4 CC-2-3 4.0 (20 C., 1 kHz) = 5.9 5 CCP-V-1 10.5 .sub.(20 C., 1 kHz) = 4.1 6 CCP-V2-1 1.5 .sub.(20 C., 1 kHz) = 10.0 7 CCP-3-OT 6.0 k.sub.11(20 C.) = 18.9 pN 8 CLP-3-T 8.0 k.sub.33(20 C.) = 17.8 pN 9 DGUQU-4-F 1.5 .sub.1(20 C.) = 104 mPa .Math. s 10 PGUQU-3-F 6.0 11 PGUQU-4-F 8.0 12 PGUQU-5-F 3.0 13 COB(S)-2-O4 8.0 14 LB-3-T 4.0 100.0

[0517] This mixture, mixture M-25, has a good combination of properties.

Example 26

[0518] The following mixture (M-26) is prepared and investigated.

TABLE-US-00037 Mixture M-26 Composition Compound Concentration No. Abbreviation /% by weight Physical properties 1 CC-3-V 26.0 T(N, I) = 99 C. 2 CC-3-V1 10.0 (20 C., 1 kHz) = 5.6 3 CC-2-3 5.5 .sub.(20 C., 1 kHz) = 4.2 4 CCP-V-1 7.5 .sub.(20 C., 1 kHz) = 9.7 5 CCP-3-OT 6.0 k.sub.11(20 C.) = 19.0 pN 6 CLP-3-T 7.5 k.sub.33(20 C.) = 17.8 pN 7 CCQU-3-F 6.0 8 PGUQU-3-F 5.0 9 PGUQU-4-F 8.0 10 PGUQU-5-F 1.5 11 COB(S)-2-O4 8.0 12 LB(S)-3-OT 9.0 100.0

[0519] This mixture, mixture M-26, has a good combination of properties.

Example 27

[0520] The following mixture (M-27) is prepared and investigated.

TABLE-US-00038 Mixture M-27 Composition Compound Concentration No. Abbreviation /% by weight Physical properties 1 CC-3-V 26.0 T(N, I) = 100 C. 2 CC-3-V1 10.0 n(20 C., 589 nm) = 0.1114 3 CC-3-2V1 8.0 n.sub.e(20 C., 589 nm) = 1.5914 4 CCP-V-1 5.0 (20 C., 1 kHz) = 5.7 5 CCP-3-OT 7.5 .sub.(20 C., 1 kHz) = 5.3 6 CDUQU-3-F 9.5 .sub.(20 C., 1 kHz) = 11.0 7 DGUQU-4-F 4.0 k.sub.11(20 C.) = 20.5 pN 8 PGUQU-3-F 6.0 k.sub.33(20 C.) = 19.2 pN 9 COB(S)-2-O4 8.0 .sub.1(20 C.) = 113 mPa .Math. s 10 LB-3-T 7.0 11 LB(S)-3-OT 9.0 100.0

[0521] This mixture, mixture M-27, has a good combination of properties.

Example 28

[0522] The following mixture (M-28) is prepared and investigated.

TABLE-US-00039 Mixture M-28 Composition Compound Concentration No. Abbreviation /% by weight Physical properties 1 CC-3-V 27.0 T(N, I) = 98 C. 2 CC-3-V1 10.0 n(20 C., 589 nm) = 0.1108 3 CC-3-2V1 8.0 n.sub.e(20 C., 589 nm) = 1.5923 4 CCP-V-1 10.0 (20 C., 1 kHz) = 5.8 5 CCP-3-OT 6.5 .sub.(20 C., 1 kHz) = 4.6 6 CDUQU-3-F 5.0 .sub.(20 C., 1 kHz) = 10.4 7 DGUQU-4-F 4.0 k.sub.11(20 C.) = 18.5 pN 8 PGUQU-3-F 3.5 k.sub.33(20 C.) = 17.8 pN 9 PGUQU-4-F 6.0 .sub.1(20 C.) = 99 mPa .Math. s 10 COB(S)-2-O4 4.0 LTS.sub.bulk(20 C.) = 1,000 h 11 LB-3-T 7.0 12 LB(S)-3-OT 9.0 100.0

[0523] This mixture, mixture M-28, has a good combination of properties.

Example 29

[0524] The following mixture (M-29) is prepared and investigated.

TABLE-US-00040 Mixture M-29 Composition Compound Concentration Physical No. Abbreviation /% by weight properties 1 CC-3-V 55.0 2 COB(S)-2-O4 10.0 3 PY1-4-O2 2.5 4 LB(S)-3-OT 6.5 5 CCP-2-OT 6.5 6 DGUQU-4-F 5.0 7 DPGU-4-F 3.5 8 LB-3-T 10.0 9 PGP-2-2V 1.0 100.0

[0525] This mixture, mixture M-29, has a good combination of properties

Example 30

[0526] The following mixture (M-30) is prepared and investigated.

TABLE-US-00041 Mixture M-30 Composition Compound Concentration Physical No. Abbreviation /% by weight properties 1 CC-3-V 49.0 2 CDUQU-3-F 4.5 3 COB(S)-2-O4 7.0 4 PY1-4-O2 5.0 5 LB(S)-3-OT 10.0 6 CCP-3-OT 5.5 7 DGUQU-C4-F 2.0 8 DPGU-C4-F 2.5 9 LB-3-T 7.0 10 CCP-V-1 2.5 11 CCU-V-F 5.0 100.0

[0527] This mixture, mixture M-30, has a good combination of properties.

Example 31

[0528] The following mixture (M-31) is prepared and investigated.

TABLE-US-00042 Mixture M-31 Composition Compound Concentration Physical No. Abbreviation /% by weight properties 1 CC-3-V 29.0 2 CC-V-V1 25.0 3 CCP-V-1 5.0 4 CDUQU-3-F 7.0 5 CLY1-3-O2 8.0 6 COB(S)-2-O4 4.0 7 PGUQU1-4-F 4.5 8 Y-4O-O4 2.0 9 LB(S)-3-OT 5.5 10 LB-3-T 10.0 100.0

[0529] This mixture, mixture M-31, has a good combination of properties.

Example 32

[0530] The following mixture (M-32) is prepared and investigated.

TABLE-US-00043 Mixture M-32 Composition Compound Concentration Physical No. Abbreviation /% by weight properties 1 CC-3-V 48.5 2 CCP-V-1 8.0 3 CDUQU-3-F 3.5 4 PGUQU-C3-F 5.5 5 PGUQU-C5-F 4.0 6 PPGU-3-F 0.5 7 COB(S)-2-O4 10.0 8 CY1-3-O2 10.0 9 LB(S)-3-OT 10.0 100.0

[0531] This mixture, mixture M-32, has a good combination of properties.

Example 33

[0532] The following mixture (M-33) is prepared and investigated.

TABLE-US-00044 Mixture M-33 Composition Compound Concentration Physical No. Abbreviation /% by weight properties 1 CC-3-V 42.5 2 CCP-V-1 13.0 3 CDUQU-3C1-F 8.0 4 PGUQU-3C-F 5.0 5 PPGU-3-F 0.5 6 CY1-3-O2 10.0 7 COB(S)-2-O4 5.0 8 LB-3-T 8.0 9 LB(S)-3-OT 8.0 100.0

[0533] This mixture, mixture M-33, has a good combination of properties.

Example 34

[0534] The following mixture (M-34) is prepared and investigated.

TABLE-US-00045 Mixture M-34 Composition Compound Concentration Physical No. Abbreviation /% by weight properties 1 CC-3-V 42.5 2 CCP-V-1 13.0 3 CDUQU-3-F 8.0 4 PGUQU-3-F 5.0 5 PPGU-3-F 0.5 6 CY1-3-O2 10.0 7 COB(S)-2-O4 5.0 8 LB-3-T 8.0 9 LB(S)-3-OT 8.0 100.0

[0535] This mixture, mixture M-34, has a good combination of properties.

Example 35

[0536] The following mixture (M-35) is prepared and investigated.

TABLE-US-00046 Mixture M-35 Composition Compound Concentration Physical No. Abbreviation /% by weight properties 1 CC-3-V 31.5 2 CC-3-V1 8.0 3 CC-3-2V1 11.0 4 PUQU-C3-F 7.5 5 APUQU-2-F 8.0 6 APUQU-3-F 2.0 7 CDUQU-3-F 10.5 8 DGUQU-4-F 5.0 9 PGUQU-4-F 8.0 10 COB(S)-2-O4 3.0 11 LB(S)-3-OT 5.5 100.0

[0537] This mixture, mixture M-35, has a good combination of properties.

Example 36

[0538] The following mixture (M-36) is prepared and investigated.

TABLE-US-00047 Mixture M-36 Composition Compound Concentration Physical No. Abbreviation /% by weight properties 1 CC-3-V 31.5 2 CC-3-V1 8.0 3 CC-3-2V1 11.0 4 PUQU-3-F 7.5 5 APUQU-2-F 8.0 6 APUQU1-3-F 2.0 7 CDUQU1-3-F 10.5 8 DGUQU1-4-F 5.0 9 PGUQU-4-F 8.0 10 COB(S)-2-O4 3.0 11 LB(S)-3-OT 5.5 100.0

[0539] This mixture, mixture M-36, has a good combination of properties.

Example 37

[0540] The following mixture (M-37) is prepared and investigated.

TABLE-US-00048 Mixture M-37 Composition Compound Concentration Physical No. Abbreviation /% by weight properties 1 CC-3-V 26.0 2 CC-3-V1 10.0 3 CC-2-3 5.5 4 CCP-V-1 7.5 5 CCP-3-OT 6.0 6 CLP-3-T 7.5 7 CCQU-3-F 6.0 8 PGUQU-C3-F 5.0 9 PGUQU-C3-1-F 8.0 10 PGUQU-5-F 1.5 11 COB(S)-2-O4 8.0 12 LB(S)-3-OT 9.0 100.0

[0541] This mixture, mixture M-37, has a good combination of properties.

Example 38

[0542] The following mixture (M-38) is prepared and investigated.

TABLE-US-00049 Mixture M-38 Composition Compound Concentration Physical No. Abbreviation /% by weight properties 1 CC-3-V 27.0 2 CC-3-V1 10.0 3 CC-3-2V1 8.0 4 CCP-V-1 10.0 5 CCP-3-OT 6.5 6 CDUQU-3-F 5.0 7 DGUQU1-4-F 4.0 8 PGUQU1-3-F 3.5 9 PGUQU-4-F 6.0 10 COB(S)-2-O4 4.0 11 LB-3-T 7.0 12 LB(S)-3-OT 9.0 100.0

[0543] This mixture, mixture M-38, has a good combination of properties.

Examples 39.1 to 39.4

Example 39.1

[0544] To the mixture M-1 of example 1 100 ppm of the compound S-1

##STR00478## [0545] is added. The resultant mixture exhibits an excellent stability.

Example 39.2

[0546] To the mixture M-1 of example 1 100 ppm of the compound S-2

##STR00479## [0547] is added. The resultant mixture exhibits an excellent stability.

Example 39.3

[0548] To the mixture M-1 of example 1 100 ppm of the compound S-3

##STR00480## [0549] wherein n is 3, is added. The resultant mixture exhibits an excellent stability.

Example 39.4

[0550] To the mixture M-1 of example 1 100 ppm of the compound S-4

##STR00481## [0551] wherein n is 3, is added. The resultant mixture exhibits an excellent stability.

Examples 40.1 to 40.4

Example 40.1

[0552] To the mixture M-2 of example 2 100 ppm of the compound S-1 is added. The resultant mixture exhibits an excellent stability.

Example 40.2

[0553] To the mixture M-2 of example 2 100 ppm of the compound S-2 is added. The resultant mixture exhibits an excellent stability.

Example 40.3

[0554] To the mixture M-2 of example 2 100 ppm of the compound S-3 is added. The resultant mixture exhibits an excellent stability.

Example 40.4

[0555] To the mixture M-2 of example 2 100 ppm of the compound S-4 is added. The resultant mixture exhibits an excellent stability.

Examples 41.1 to 41.4

Example 41.1

[0556] To the mixture M-3 of example 3 100 ppm of the compound S-1 is added. The resultant mixture exhibits an excellent stability.

Example 41.2

[0557] To the mixture M-3 of example 3 100 ppm of the compound S-2 is added. The resultant mixture exhibits an excellent stability.

Example 41.3

[0558] To the mixture M-3 of example 3 100 ppm of the compound S-3 is added. The resultant mixture exhibits an excellent stability.

Example 41.4

[0559] To the mixture M-3 of example 3 100 ppm of the compound S-4 is added. The resultant mixture exhibits an excellent stability.

Examples 42.1 to 42.4

Example 42.1

[0560] To the mixture M-28 of example 28 100 ppm of the compound S-1 is added. The resultant mixture exhibits an excellent stability.

Example 42.2

[0561] To the mixture M-28 of example 28 100 ppm of the compound S-2 is added. The resultant mixture exhibits an excellent stability.

Example 42.3

[0562] To the mixture M-28 of example 28 100 ppm of the compound S-3 is added. The resultant mixture exhibits an excellent stability.

Example 42.4

[0563] To the mixture M-28 of example 28 100 ppm of the compound S-4 is added. The resultant mixture exhibits an excellent stability.

Example 43

[0564] The following mixture (M-43) is prepared and investigated.

TABLE-US-00050 Mixture M-43 CC-3-V 35.0 T(N, I) [ C.]: 111.5 CCGU-3-F 5.0 n [589 nm, 20 C.]: 0.1180 CCP-V-1 15.0 .sub. [1 kHz, 20 C.]: 8.6 CCP-V2-1 9.0 .sub. [1 kHz, 20 C.]: 3.4 CCVC-3-V 3.0 [1 kHz, 20 C.]: 5.2 CDUQU-3-F 5.5 .sub.1 [mPas, 20 C.]: COB(S)-2-O4 1.5 .sub.1 [mPas, 20 C.]: 108 DGUQU-4-F 3.0 K.sub.1 [pN, 20 C.]: 16.7 LB(S)-3-OT 4.0 K.sub.3 [pN, 20 C.]: 18.5 PGP-2-2V 7.0 V.sub.0 [V, 20 C.]: 1.89 PGUQU-3-F 3.5 PGUQU-4-F 3.5 PYP-2-3 3.0 PYP-2-4 2.0 100.0

[0565] This mixture, mixture M-43, has a good combination of properties.

[0566] To the mixture M-43 0.04% of the compound S-4 is added. The resultant mixture exhibits an excellent stability.

[0567] To the mixture M-43 0.040% of the compound S-4 and 0.005% of the compound S-5

##STR00482## [0568] are added. The resultant mixture exhibits a very excellent stability.

Example 44

[0569] The following mixture (M-44) is prepared and investigated.

TABLE-US-00051 Mixture M-44 CC-3-V 50.0 T(N, I) [ C.]: 76 CCP-V-1 6.5 n [589 nm, 20 C.]: 0.0997 CLY-3-O2 8.5 .sub. [1 kHz, 20 C.]: 7.2 COB(S)-2-O4 4.0 .sub. [1 kHz, 20 C.]: 5.0 CPY-3-O2 7.0 [1 kHz, 20 C.]: 2.1 LB(S)-3-OT 5.0 .sub.1 [mPas, 20 C.]: LB-3-T 5.0 .sub.1 [mPas, 20 C.]: 71 PPGU-3-F 0.5 K.sub.1 [pN, 20 C.]: 13.5 PUQU-3-F 13.5 K.sub.3 [pN, 20 C.]: 15.0 100.0 V.sub.0 [V, 20 C.]: 2.63 LTS bulk [h, 20 C.]: 240

[0570] This mixture, mixture M-44, has a good combination of properties.

Example 45

[0571] The following mixture (M-45) is prepared and investigated.

TABLE-US-00052 Mixture M-45 CC-3-V 45.0 T(N, I) [ C.]: 82 CCP-V-1 18.0 n [589 nm, 20 C.]: 0.0978 PUQU-3-F 1.0 .sub.|| [1 kHz, 20 C.]: 6.9 CDUQU-3-F 8.0 .sub. [1 kHz, 20 C.]: 5.3 PPGU-3-F 0.5 [1 kHz, 20 C.]: 1.6 LB(S)-3-OT 9.5 .sub.1 [mPa s, 20 C.]: LB-3-T 7.0 .sub.1 [mPa s, 20 C.]: 71 COB(S)-2-O4 7.0 K.sub.1 [pN, 20 C.]: 14.1 Y-4O-O4 4.0 K.sub.3 [pN, 20 C.]: 14.7 100.0 V.sub.0 [V, 20 C.]: 3.16 LTS bulk [h, 20 C.]: 408 LTS bulk [h, 30 C.]: LTS bulk [h, 10 C.]: 984

[0572] This mixture, mixture M-45, has a good combination of properties.

Example 46

[0573] The following mixture (M-46) is prepared and investigated.

TABLE-US-00053 Mixture M-46 APUQU-2-F 4.5 T(N, I) [ C.]: 85 APUQU-3-F 4.5 n [589 nm, 20 C.]: 0.1242 PGUQU-3-F 4.5 .sub.|| [1 kHz, 20 C.]: 9.8 PGUQU-4-F 4.5 .sub. [1 kHz, 20 C.]: 3.8 PGUQU-5-F 3.0 [1 kHz, 20 C.]: 6.0 PPGU-3-F 0.5 .sub.1 [mPa s, 20 C.]: CCP-V-1 4.5 .sub.1 [mPa s, 20 C.]: 70 PGP-1-2V 2.0 K.sub.1 [pN, 20 C.]: 15.2 PGP-2-2V 6.0 K.sub.3 [pN, 20 C.]: 14.6 PGP-3-2V 3.0 V.sub.0 [V, 20 C.]: 1.67 CC-3-V 43.0 LTS bulk [h, 20 C.]: 1000 CC-3-V1 6.5 LTS bulk [h, 30 C.]: 1000 PP-1-2V1 2.5 LTS bulk [h, 10 C.]: 1000 LB(S)-3-OT 6.0 LB-3-T 2.0 COB(S)-2-O4 3.0 100.0

[0574] This mixture, mixture M-46, has a good combination of properties.

Example 47

[0575] The following mixture (M-47) is prepared and investigated.

TABLE-US-00054 Mixture M-47 CC-4-V1 23.0 T(N, I) [ C.]: 80 CC-3-V1 6.5 n [589 nm, 20 C.]: 0.1010 CC-3-2V1 5.5 .sub.|| [1 kHz, 20 C.]: 8.0 CC-3-O1 8.0 .sub. [1 kHz, 20 C.]: 5.7 CP-3-O1 5.0 [1 kHz, 20 C.]: 2.3 CCQU-2-F 9.5 .sub.1 [mPa s, 20 C.]: CCQU-3-F 6.0 .sub.1 [mPa s, 20 C.]: 107 CDUQU-3-F 3.0 K.sub.1 [pN, 20 C.]: 18.2 PGU-3-F 3.0 K.sub.3 [pN, 20 C.]: 18.5 PPGU-3-F 0.5 V.sub.0 [V, 20 C.]: 2.98 CY-3-O4 6.0 COB(S)-2-O4 7.0 LB(S)-3-OT 10.0 LB-3-T 7.0 100.0

[0576] This mixture, mixture M-47, has a good combination of properties.

Example 48

[0577] The following mixture (M-48) is prepared and investigated.

TABLE-US-00055 Mixture M-48 CC-4-V1 23.0 T(N, I) [ C.]: 79.5 CC-3-V1 7.5 n [589 nm, 20 C.]: 0.1020 CC-2V-V2 6.5 .sub.|| [1 kHz, 20 C.]: 7.5 CC-3-01 8.0 .sub. [1 kHz, 20 C.]: 5.5 CP-3-02 7.0 [1 kHz, 20 C.]: 2.0 CCQU-2-F 5.0 .sub.1 [mPa s, 20 C.]: CCQU-3-F 8.0 .sub.1 [mPa s, 20 C.]: 121 CDUQU-3-F 3.0 K.sub.1 [pN, 20 C.]: 20.1 PGU-3-F 3.0 K.sub.3 [pN, 20 C.]: 44.4 PPGU-3-F 0.5 V.sub.0 [V, 20 C.]: 3.32 CY-3-O4 5.5 COB(S)-2-O4 7.0 LB(S)-3-OT 9.0 LB-3-T 7.0 100.0

[0578] This mixture, mixture M-48, has a good combination of properties.

Example 49

[0579] The following mixture (M-49) is prepared and investigated.

TABLE-US-00056 Mixture M-49 CC-3-V 48.0 T(N, I) [ C.]: 79 CCP-V-1 8.0 n [589 nm, 20 C.]: 0.1003 PUQU-3-F 3.0 .sub.|| [1 kHz, 20 C.]: 8.1 CDUQU-3-F 10.0 .sub. [1 kHz, 20 C.]: 6.1 PPGU-3-F 0.5 [1 kHz, 20 C.]: 2.0 LB(S)-3-OT 8.5 .sub.1 [mPa s, 20 C.]: LB-3-T 7.0 .sub.1 [mPa s, 20 C.]: 73 COB(S)-2-O4 6.0 K.sub.1 [pN, 20 C.]: 14.1 COB(S)-V-O4 6.0 K.sub.3 [pN, 20 C.]: 13.9 Y-4O-O4 3.0 V.sub.0 [V, 20 C.]: 2.79 100.0 LTS bulk [h, 20 C.]: 1000

[0580] This mixture, mixture M-49, has a good combination of properties.

Example 50

[0581] The following mixture (M-50) is prepared and investigated.

TABLE-US-00057 Mixture M-50 CC-3-V 49.5 T(N, I) [ C.]: 80.5 CCP-V-1 7.0 n [589 nm, 20 C.]: 0.1004 CDUQU-3-F 11.0 .sub.|| [1 kHz, 20 C.]: 8.4 PGUQU-3-F 3.0 .sub. [1 kHz, 20 C.]: 5.8 PPGU-3-F 0.5 [1 kHz, 20 C.]: 2.6 LB(S)-3-OT 8.5 .sub.1 [mPa s, 20 C.]: LB-3-T 7.0 .sub.1 [mPa s, 20 C.]: 73 COB(S)-2-O4 5.5 K.sub.1 [pN, 20 C.]: 14.1 COB(S)-V-O4 5.0 K.sub.3 [pN, 20 C.]: 13.9 Y-4O-O4 3.0 V.sub.0 [V, 20 C.]: 2.46 100.0 LTS bulk [h, 20 C.]: 1000

[0582] This mixture, mixture M-50, has a good combination of properties.

Example 51

[0583] The following mixture (M-51) is prepared and investigated.

TABLE-US-00058 Mixture M-51 CC-3-V 50.0 T(N, I) [ C.]: 80.5 CCP-V-1 7.0 n [589 nm, 20 C.]: 0.0999 CDUQU-3-F 10.5 .sub.|| [1 kHz, 20 C.]: 8.1 PGUQU-3-F 2.5 .sub. [1 kHz, 20 C.]: 5.9 PPGU-3-F 0.5 [1 kHz, 20 C.]: 2.3 LB(S)-3-OT 8.5 .sub.1 [mPa s, 20 C.]: LB-3-T 7.0 .sub.1 [mPa s, 20 C.]: 73 COB(S)-2-O4 5.5 K.sub.1 [pN, 20 C.]: 14.1 COB(S)-V-O4 5.5 K.sub.3 [pN, 20 C.]: 14.2 Y-4O-O4 3.0 V.sub.0 [V, 20 C.]: 2.63 100.0 LTS bulk [h, 20 C.]: 1000

[0584] This mixture, mixture M-51, has a good combination of properties.

Example 52

[0585] The following mixture (M-52) is prepared and investigated.

TABLE-US-00059 Mixture M-52 CC-3-V 50.5 T(N, I) [ C.]: 78.5 CCP-V-1 5.0 n [589 nm, 20 C.]: 0.1004 PP-1-2V1 1.0 .sub.|| [1 kHz, 20 C.]: 8.3 CDUQU-3-F 11.0 .sub. [1 kHz, 20 C.]: 5.9 PGUQU-3-F 2.5 [1 kHz, 20 C.]: 2.4 PPGU-3-F 0.5 .sub.1 [mPa s, 20 C.]: LB(S)-3-OT 8.5 .sub.1 [mPa s, 20 C.]: 72 LB-3-T 7.0 K.sub.1 [pN, 20 C.]: 14.1 COB(S)-2-O4 5.5 K.sub.3 [pN, 20 C.]: 13.6 COB(S)-V-O4 5.5 V.sub.0 [V, 20 C.]: 2.56 Y-4O-O4 3.0 LTS bulk [h, 20 C.]: 1000 100.0 LTS bulk [h, 30 C.]:

[0586] This mixture, mixture M-52, has a good combination of properties.

Example 53

[0587] The following mixture (M-53) is prepared and investigated.

TABLE-US-00060 Mixture M-53 CC-3-V 51.0 T(N, I) [ C.]: 81 CC-3-V1 5.0 n [589 nm, 20 C.]: 0.1014 CDUQU-3-F 11.0 .sub.|| [1 kHz, 20 C.]: 8.2 COB(S)-2-O4 6.5 .sub. [1 kHz, 20 C.]: 5.6 COB(S)-V-O4 5.0 [1 kHz, 20 C.]: 2.6 LB(S)-3-OT 10.0 .sub.1 [mPa s, 20 C.]: LB-3-T 7.0 .sub.1 [mPa s, 20 C.]: 72 PGU-3-F 4.5 K.sub.1 [pN, 20 C.]: 15.1 100.0 K.sub.3 [pN, 20 C.]: 13.6 V.sub.0 [V, 20 C.]: 2.53 LTS bulk [h, 20 C.]: 72 LTS bulk [h, 30 C.]: LTS bulk [h, 10 C.]: 1000

[0588] This mixture, mixture M-53, has a good combination of properties.

Example 54

[0589] The following mixture (M-54) is prepared and investigated.

TABLE-US-00061 Mixture M-54 CDUQU-3-F 5.0 T(N, I) [ C.]: 97.5 DGUQU-4-F 4.0 n [589 nm, 20 C.]: 0.1106 PGUQU-3-F 3.5 .sub.|| [1 kHz, 20 C.]: 10.4 PGUQU1-4-F 6.0 .sub. [1 kHz, 20 C.]: 4.6 CCP-3-OT 6.5 [1 kHz, 20 C.]: 5.8 CCP-V-1 10.0 .sub.1 [mPa s, 20 C.]: CC-3-2V1 8.0 .sub.1 [mPa s, 20 C.]: 104 CC-3-V 27.0 K.sub.1 [pN, 20 C.]: 18.3 CC-3-V1 10.0 K.sub.3 [pN, 20 C.]: 17.7 LB-3-T 7.0 V.sub.0 [V, 20 C.]: 1.87 LB(S)-3-OT 9.0 LTS bulk [h, 20 C.]: COB(S)-2-O4 4.0 LTS bulk [h, 30 C.]: 100.0 LTS bulk [h, 10 C.]:

[0590] This mixture, mixture M-54, has a good combination of properties.

Example 55

[0591] The following mixture (M-55) is prepared and investigated.

TABLE-US-00062 Mixture M-55 CDUQU-3-F 6.0 T(N, I) [ C.]: 115.4 COB(S)-2-O4 4.0 n [589 nm, 20 C.]: CPGP-4-3 4.0 .sub.|| [1 kHz, 20 C.]: 8.5 CPGP-5-2 2.0 .sub. [1 kHz, 20 C.]: 4.4 DGUQU-4-F 4.0 [1 kHz, 20 C.]: 4.1 LB(S)-3-OT 2.0 .sub.1 [mPa s, 20 C.]: LB-3-T 2.0 .sub.1 [mPa s, 20 C.]: 144 PGUQU-3-F 1.5 K.sub.1 [pN, 20 C.]: 18.1 PGUQU-4-F 4.0 K.sub.3 [pN, 20 C.]: 17.4 PPGU-3-F 0.5 V.sub.0 [V, 20 C.]: 2.21 CCP-V-1 12.0 LTS bulk [h, 20 C.]: CCVC-3-V 5.0 LTS bulk [h, 30 C.]: 1000 CLY-3-OT 4.0 LTS bulk [h, 10 C.]: CPY-2-O2 6.0 PGIY-2-O4 3.5 PGP-2-2V 3.5 CC-3-V 30.0 CC-3-V1 6.0 100.0

[0592] This mixture, mixture M-55, has a good combination of properties.

[0593] To the mixture M-55 0.04% of the compound S-3 is added. The resultant mixture exhibits an excellent stability.

Example 56

[0594] The following mixture (M-56) is prepared and investigated.

TABLE-US-00063 Mixture M-56 CDUQU-3-F 4.0 T(N, I) [ C.]: 117.6 COB(S)-2-O4 3.0 n [589 nm, 20 C.]: 0.1217 CPGP-4-3 3.0 .sub.|| [1 kHz, 20 C.]: 8.7 CPGP-5-2 0.5 .sub. [1 kHz, 20 C.]: 4.5 DGUQU-4-F 3.0 [1 kHz, 20 C.]: 4.2 LB(S)-3-OT 3.0 .sub.1 [mPa s, 20 C.]: LB-3-T 2.0 .sub.1 [mPa s, 20 C.]: 149 PGUQU-3-F 3.0 K.sub.1 [pN, 20 C.]: 18.7 PGUQU-4-F 3.0 K.sub.3 [pN, 20 C.]: 18.9 PGUQU-5-F 3.0 V.sub.0 [V, 20 C.]: 2.22 PPGU-3-F 0.5 LTS bulk [h, 20 C.]: CCP-V-1 10.0 LTS bulk [h, 30 C.]: 1000 CCP-V2-1 8.0 LTS bulk [h, 10 C.]: CCVC-3-V 4.0 CLY-3-OT 3.0 CPY-2-O2 7.0 CPY-3-O2 5.0 PGP-2-2V 2.0 CC-3-V 29.0 CC-3-V1 4.0 100.0

[0595] This mixture, mixture M-56, has a good combination of properties.

[0596] To the mixture M-56 0.04% of the compound S-3 is added. The resultant mixture exhibits an excellent stability.

Example 57

[0597] The following mixture (M-57) is prepared and investigated.

TABLE-US-00064 Mixture M-57 CPPC-3-3 3.0 T(N, I) [ C.]: 111 CGPC-3-3 3.0 n [589 nm, 20 C.]: 0.1191 CPGP-5-2 3.0 .sub.|| [1 kHz, 20 C.]: 7.9 CPGP-5-3 3.0 .sub. [1 kHz, 20 C.]: 3.9 PGUQU-3-F 4.0 [1 kHz, 20 C.]: 4.0 PGUQU-4-F 4.5 .sub.1 [mPa s, 20 C.]: CCP-V-1 10.5 .sub.1 [mPa s, 20 C.]: 117 CCP-V2-1 4.0 K.sub.1 [pN, 20 C.]: 17.3 CCVC-3-V 4.0 K.sub.3 [pN, 20 C.]: 19.2 CCY-3-O3 6.0 V.sub.0 [V, 20 C.]: 2.20 PUQU-3-F 8.0 LTS bulk [h, 20 C.]: 1000 PP-1-2V1 3.0 LTS bulk [h, 30 C.]: CC-3-V 32.5 LTS bulk [h, 10 C.]: CC-3-V1 3.5 LB-3-T 5.0 COB(S)-2-O4 3.0 100.0

[0598] This mixture, mixture M-57, has a good combination of properties.

Example 58

[0599] The following mixture (M-58) is prepared and investigated.

TABLE-US-00065 Mixture M-58 CPPC-3-3 3.0 T(N, I) [ C.]: 114.5 CGPC-3-3 3.0 n [589 nm, 20 C.]: 0.1184 COB(S)-2-O4 3.0 .sub.|| [1 kHz, 20 C.]: 7.9 CPGP-5-2 3.0 .sub. [1 kHz, 20 C.]: 3.8 CPGP-5-3 3.0 [1 kHz, 20 C.]: 4.1 CPGU-3-OT 3.0 .sub.1 [mPa s, 20 C.]: LB-3-T 4.0 .sub.1 [mPa s, 20 C.]: 113 PGUQU-3-F 3.0 K.sub.1 [pN, 20 C.]: 17.9 PGUQU-4-F 3.0 K.sub.3 [pN, 20 C.]: 19.6 B(S)-2O-O5 1.5 V.sub.0 [V, 20 C.]: 2.22 CCP-V-1 12.0 LTS bulk [h, 20 C.]: 1000 CCP-V2-1 5.0 LTS bulk [h, 30 C.]: 1000 CCVC-3-V 4.0 LTS bulk [h, 10 C.]: 1000 PUQU-3-F 9.0 B(S)-2O-O4 1.5 CC-3-V 31.0 CC-3-V1 8.0 100.0

[0600] This mixture, mixture M-58, has a good combination of properties.

Example 59

[0601] The following mixture (M-59) is prepared and investigated.

TABLE-US-00066 Mixture M-59 CPPC-3-3 3.0 T(N, I) [ C.]: 113 CGPC-3-3 3.0 COB(S)(Me)-2-O4 3.0 CPGP-5-2 3.0 CPGP-5-3 3.0 CPGU-3-OT 3.0 LB-3-T 4.0 PGUQU-3-F 3.0 PGUQU-4-F 3.0 B(S)-2O-O5 1.5 CCP-V-1 12.0 CCP-V2-1 5.0 CCVC-3-V 4.0 PUQU-3-F 9.0 B(S)-2O-O4 1.5 CC-3-V 31.0 CC-3-V1 8.0 100.0

[0602] This mixture, mixture M-59, has a good combination of properties.