LIQUID-CRYSTALLINE MEDIUM

Abstract

The present invention relates to liquid crystal mixtures comprising one or more compounds of the formula A

##STR00001##

and, in addition one or more compounds of formula I

##STR00002##

or one or more compounds of formula II

##STR00003##

wherein the individual radicals have the respective meanings indicated in claim 1, to the use thereof for high-frequency components, and to high-frequency components, in particular antennae, especially for the gigahertz range, comprising these media.

Claims

1. Liquid-crystalline medium comprising one or more compounds of formula A ##STR00291## and, in addition one or more compounds selected from the group of compounds of formulae I and II ##STR00292## wherein R.sup.01 and R.sup.02 each, independently of one another, denote a halogenated or unsubstituted alkyl radical having 1 to 15 C atoms, wherein one or more CH.sub.2 groups in these radicals may be replaced, independently of one another, by CC, CHCH, CFCF, CFCH, CHCF, (CO)O, O(CO), (CO), O or S in such a way that O or S atoms are not linked directly to one another, L.sup.01 and L.sup.02 denote H or CH.sub.3 with the proviso that one of L.sup.01 and L.sup.02 denotes H and the other of L.sup.01 and L.sup.02 denotes CH.sub.3, ##STR00293## denotes ##STR00294## L.sup.11 denotes alkyl having 1 to 6 C atoms, cycloalkyl having 3 to 6 C atoms or cycloalkenyl having 4 to 6 C atoms, X.sup.11 denotes H, alkyl having 1 to 3 C atoms or halogen, R.sup.11 to R.sup.14 independently of one another, denote unfluorinated alkyl or unfluorinated alkoxy, each having 1 to 15 C atoms, unfluorinated alkenyl, unfluorinated alkenyloxy or unfluorinated alkoxyalkyl, each having 2 to 15 C atoms, or cycloalkyl, alkylcycloalkyl, cycloalkenyl, alkylcycloalkenyl, alkylcycloalkylalkyl or alkylcycloalkenylalkyl, each having up to 15 C atoms, and alternatively one of R.sup.13 and R.sup.14 or both also denote H; L.sup.21 denotes R.sup.21 and, in the case where Z.sup.21 and/or Z.sup.22 denote trans-CHCH or trans-CFCF, alternatively also denotes X.sup.21, L.sup.22 denotes R.sup.22 and, in the case where Z.sup.21 and/or Z.sup.22 denote trans-CHCH or trans-CFCF, alternatively also denotes X.sup.22, R.sup.21 and R.sup.22 independently of one another, denote H, unfluorinated alkyl or unfluorinated alkoxy having 1 to 17 C atoms or unfluorinated alkenyl, unfluorinated alkenyloxy or unfluorinated alkoxyalkyl having 2 to 15 C atoms, X.sup.21 and X.sup.22 independently of one another, denote F or Cl, CN, NCS, SF.sub.5, fluorinated alkyl or alkoxy having 1 to 7 C atoms or fluorinated alkenyl, alkenyloxy or alkoxyalkyl having 2 to 7 C atoms, one of Z.sup.21 and Z.sup.22 denotes trans-CHCH, trans-CFCF or CC and the other, independently thereof, denotes trans-CHCH, trans-CFCF or a single bond, and ##STR00295## independently of one another, denote ##STR00296##

2. Liquid-crystalline medium according to claim 1, characterised in that it comprises one or more compounds of formula A and one or more compounds of formula I.

3. Liquid-crystalline medium according to claim 1, characterised in that it comprises one or more compounds of formula A and one or more compounds of formula II.

4. Liquid-crystalline medium according to claim 1, characterised in that it comprises one or more compounds of formula A and one or more compounds of formula I and one or more compounds of formula II.

5. Liquid-crystalline medium according to claim 2, characterised in that one or more compounds of formula I are selected from the group of compounds of formulae I-1 to I-4 ##STR00297##

6. Liquid-crystalline medium according to claim 3, characterised in that one or more compounds of formula II are selected from compounds of the formula II-1a ##STR00298##

7. Liquid-crystalline medium according to claim 1, characterised in that one or more compounds of formula A are selected from the group of compounds of formulae A-1 and A-2 ##STR00299## wherein R.sup.01 denotes alkyl having 1 to 7 C atoms.

8. Liquid-crystalline medium according to claim 1, characterised in that it comprises one or more compounds of formula A ##STR00300## wherein ##STR00301## independently of one another, denote ##STR00302## Y denotes S or O, L.sup.0 on each occurrence, independently of one another, denotes H, Br, Cl, F, CN, NCS, SCN, SF.sub.5, alkyl having 1 to 10 C atoms, alkoxy having 1 to 10 C atoms, cycloalkyl having 3 to 6 C atoms or a mono- or polyfluorinated alkyl or alkoxy group each having 1 to 10 C atoms, R.sup.03, R.sup.04 each, independently of one another, denote a halogenated or unsubstituted alkyl radical having 1 to 15 C atoms, where, in addition, one or more CH.sub.2 groups in these radicals may each be replaced, independently of one another, by CC, CHCH, CFCF, CFCH, CHCF, (CO)O, O(CO), (CO), O or S in such a way that O or S atoms are not linked directly to one another and, optionally, independently of one another, R.sup.03 may also denote ethynyl (i.e. CCH) and R.sup.04 may also denote H, R.sup.05, R.sup.06 each, independently of one another, denote a halogenated or unsubstituted alkyl radical having 1 to 6 C atoms, where, in addition, one or more CH.sub.2 groups in these radicals may each be replaced, independently of one another, by CC, CHCH, CFCF, CFCH, CHCF, (CO)O, O(CO), (CO), O or S in such a way that O or S atoms are not linked directly to one another, and r denotes 0 or 1, with the condition that compounds of formula A are excluded.

9. Liquid-crystalline medium according to claim 8, characterised in that the compounds of formula A are selected from the sub-formulae A-1 to A-4 ##STR00303## wherein R.sup.03 and R.sup.04 independently of each other denote alkyl having 1 to 7 C atoms.

10. Liquid-crystalline medium according to claim 1, characterised in that it comprises one or more compounds of selected from the group of compounds of the formulae IX-1 and IX-2 ##STR00304## wherein R.sup.1 denotes straight chain or branched alkyl having 1 to 20 C-atoms which is unsubstituted, mono- or poly-substituted by F, Cl or CN, and in which one or more CH.sub.2 groups are optionally replaced independently from one another, by O, S, NR.sup.0, SiR.sup.0R.sup.00, CO, COO, OCO, OCOO, SCO, COS, CY.sup.01CY.sup.02 or CC in such a way that O and/or S atoms are not linked directly to one another, L.sup.1 denotes H or F, X.sup.1 denotes F, CN or CF.sub.3, Y.sup.01 and Y.sup.02 denote, independently of each other, F, Cl or CN, and alternatively one of them may be H, and R.sup.0 and R.sup.00 denote, independently of each other, H or alkyl having 1 to 12 C-atoms.

11. Liquid-crystalline medium according to claim 1, characterised in that the total concentration of the compounds of the formula A in the medium is in the range from 5% to 80%.

12. Liquid-crystalline medium according to claim 1, characterised in that the total concentration of compounds selected from the group of compounds of formulae A and I and II is in the range from 40% to 100%.

13. Process for the preparation of a liquid-crystal medium according to claim 1, characterised in that one or more compounds of the formula A are mixed with one or more further compounds and optionally with one or more additives.

14. Component for high-frequency technology, characterised in that it comprises a liquid-crystal medium according to claim 1.

15. Phased-array antenna, characterised in that it comprises a component according to claim 14.

16. (canceled)

Description

EXAMPLES

Comparative Example C-1

[0373] A liquid crystal mixture C-1 having the composition and properties as indicated in the following table is prepared.

TABLE-US-00007 Composition Compound No. Abbreviation 1 PPTUI-3-4 25.1 2 PPTUI-4-4 48.5 3 PPTUI-3-2 26.4 100.0 Physical properties T(N, I) = 163.5 C. n.sub.0 (20 C., 589.3 nm) = 1.47 n (20 C., 589.3 nm) = 0.40 .sub. (20 C., 1 kHz) = 3.8 (20 C., 1 kHz) = 1.0 .sub.1 (20 C.) = 310 mPa .Math. s .sub.r, (20 C., 19 GHz) = 2.48 .sub.r (20 C., 19 GHz) = 0.87 tan .sub.r, (20 C., 19 GHz) = 0.0123 tan .sub.r, (20 C., 19 GHz) = 0.0034 (20 C., 19 GHz) 0.26 (20 C., 19 GHz) 21.1

[0374] This mixture is suitable for applications in the microwave range, in particular for phase shifters.

EXAMPLES

[0375] The liquid-crystal media M-1 to M-41 having the composition and properties as indicated in the following tables are prepared.

Mixture Example M-1

[0376]

TABLE-US-00008 Composition Compound No. Abbreviation 1 PTiNpTP-4-4 21.0% 2 PTP(c3)TP-4-4 20.0% 3 PTiNpTP-4-6 22.0% 4 PTP(1)I-4-A1 30.0% 5 PTiNpTP-6-6 7.0% 100.0% Physical properties T(N, I) = 98.5 C. (20 C., 1 kHz) = 0.9 .sub. = 3.5 .sub.1 (20 C.) = 2136 mPa .Math. s K.sub.1 = 9.7 K.sub.3 = 38.6 V.sub.0 = 3.51 V

Mixture Example M-2

[0377]

TABLE-US-00009 Composition Compound No. Abbreviation 1 PTP(1)I-4-A1 30.0% 2 PTiNpTP-4-4 7.0% 3 PTiNpTP-3-6 14.0% 4 PTiNpTP-6-6 10.50% 5 PTiNpTP-3-5 14.0% 6 PTiNpTP-2-6 3.50% 7 PTiNpTP-5-6 7.0% 8 PTiNpTP-4-6 14.0% 100.0% Physical properties T(N, I) = 118 C. (20 C., 1 kHz) = 0.9 .sub. = 3.5 .sub.1 (20 C.) = 2331 mPa .Math. s K.sub.1 = 12.5 K.sub.3 = 39.6 V.sub.0 = 3.91 V

Mixture Example M-3

[0378]

TABLE-US-00010 Composition Compound No. Abbreviation 1 PTiNpTP-4-4 7.0% 2 PTiNpTP-3-6 14.0% 3 PTiNpTP-6-6 10.5% 4 PTiNpTP-3-5 14.0% 5 PTiNpTP-2-6 3.5% 6 PTiNpTP-5-6 7.0% 7 PTiNpTP-4-6 14.0% 8 PTP(1)IA-4-1 30.0% 100.0% Physical properties T(N, I) = 118 C. (20 C., 1 kHz) = 0.9 .sub. = 3.6 .sub.1 (20 C.) = 2358 mPa .Math. s K.sub.1 = 13.0 K.sub.3 = 40.9 V.sub.0 = 3.94 V

Mixture Example M-4

[0379]

TABLE-US-00011 Composition Compound No. Abbreviation 1 PTiNpTP-4-4 6.0% 2 PTiNpTP-3-6 12.0% 3 PTiNpTP-6-6 9.0% 4 PTiNpTP-3-5 12.0% 5 PTiNpTP-2-6 3.0% 6 PTiNpTP-5-6 6.0% 7 PTiNpTP-4-6 12.0% 8 PTP(1)IA-4-1 40.0% 100.0% Physical properties T(N, I) = 104.5 C. (20 C., 1 kHz) = 0.9 .sub. = 3.5 .sub.1 (20 C.) = 1711 mPa .Math. s K.sub.1 = 11.3 K.sub.3 = 34.0 V.sub.0 = 3.71 V

Mixture Example M-5

[0380]

TABLE-US-00012 Composition Compound No. Abbreviation 1 CC-3-V 8.0% 2 CCP-V-1 8.0% 3 PPTUI-3-2 8.0% 4 PPTUI-3-4 15.0% 5 PPTUI-4-4 30.0% 6 CPGP-5-2 3.0% 7 CPGP-5-3 3.0% 8 PTP(1)I-4-A1 21.0% 9 UMU-6-N 4.0% 100.0% Physical properties T(N, I) = 123 C. n (20 C., 589.3 nm) = 0.2949 n.sub.o (20 C., 589.3 nm) = 1.5145 (20 C., 1 kHz) = 3.7 .sub. = 6.5 .sub.1 (20 C.) = 399 mPa .Math. s K.sub.1 = 14.9 K.sub.3 = 22.5 V.sub.0 = 2.13 V

Mixture Example M-6

[0381]

TABLE-US-00013 Composition Compound No. Abbreviation 1 PTP(1)I-4-A1 8.0% 2 CCP-V-1 8.0% 3 PPTUI-3-2 8.0% 4 PPTUI-3-4 15.0% 5 PPTUI-4-4 30.0% 6 GGP-3-CL 5.0% 7 GGP-5-CL 20.0% 8 CPGP-5-2 3.0% 9 CPGP-5-3 3.0% 100.0% Physical properties T(N, I) = 145.5 C. n (20 C., 589.3 nm) = 0.3110 n.sub.o (20 C., 589.3 nm) = 1.5196 (20 C., 1 kHz) = 3.5 .sub. = 6.7 .sub.1 (20 C.) = 554 mPa .Math. s K.sub.1 = 18.6 K.sub.3 = 27.0 V.sub.0 = 2.45 V

Mixture Example M-7

[0382]

TABLE-US-00014 Composition Compound No. Abbreviation 1 CCP-V-1 8.0% 2 PPTUI-3-2 8.0% 3 PPTUI-3-4 15.0% 4 PPTUI-4-4 30.0% 5 CPGP-5-2 3.0% 6 CPGP-5-3 3.0% 7 PTP(1)I-4-A1 29.0% 8 UMU-6-N 4.0% 100.0% Physical properties T(N, I) = 122 C. n.sub.e (20 C., 589.3 nm) > 1.860 n.sub.o(20 C., 589.3 nm) = 1.5219 (20 C., 1 kHz) = 3.8 .sub. = 6.7 .sub.1 (20 C.) = 582 mPa .Math. s K.sub.1 = 13.8 K.sub.3 = 24.2 V.sub.0 = 2.00 V

Mixture Example M-8

[0383]

TABLE-US-00015 Composition Compound No. Abbreviation 1 CCP-V-1 8.0% 2 PPTUI-3-2 8.0% 3 PPTUI-3-4 15.0% 4 PPTUI-4-4 30.0% 5 CPGP-5-2 3.0% 6 CPGP-5-3 3.0% 7 PTP(1)I-4-A1 24.0% 8 PGUQU-3-F 3.0% 9 PGUQU-4-F 3.0% 10 PGUQU-5-F 3.0% 100.0% Physical properties T(N, I) = 131 C. n.sub.e (20 C., 589.3 nm) > 1.860 n.sub.o (20 C., 589.3 nm) = 1.5189 (20 C., 1 kHz) = 3.4 .sub. = 6.3 .sub.1 (20 C.) = 563 mPa .Math. s K.sub.1 = 15.2 K.sub.3 = 24.8 V.sub.0 = 2.22 V

Mixture Example M-9

[0384]

TABLE-US-00016 Composition Compound No. Abbreviation 1 CC-3-V 8.0% 2 CCP-V-1 8.0% 3 PPTUI-3-2 8.0% 4 PPTUI-3-4 15.0% 5 PPTUI-4-4 30.0% 6 CPGP-5-2 3.0% 7 CPGP-5-3 3.0% 8 PTP(1)I-4-A1 16.0% 9 PGUQU-3-F 3.0% 10 PGUQU-4-F 3.0% 11 PGUQU-5-F 3.0% 100.0% Physical properties T(N, I) = 131.5 C. n (20 C., 589.3 nm) = 0.2910 n.sub.o (20 C., 589.3 nm) = 1.5124 (20 C., 1 kHz) = 3.4 .sub. = 6.2 .sub.1 (20 C.) = 395 mPa .Math. s K.sub.1 = 16.3 K.sub.3 = 23.1 V.sub.0 = 2.32 V

Mixture Example M-10

[0385]

TABLE-US-00017 Composition Compound No. Abbreviation 1 PPTUI-3-2 8.0% 2 PPTUI-3-4 15.0% 3 PPTUI-4-4 30.0% 4 CPGP-5-2 3.0% 5 CPGP-5-3 3.0% 6 PTP(1)I-4-A1 37.0% 7 UMU-6-N 4.0% 100.0% Physical properties T(N, I) = 111 C. n.sub.e (20 C., 589.3 nm) > 1.860 n.sub.o (20 C., 589.3 nm) = 1.5258 (20 C., 1 kHz) = 3.8 .sub. = 6.7 .sub.1 (20 C.) = 646 mPa .Math. s K.sub.1 = 12.3 K.sub.3 = 23.0 V.sub.0 = 1.91 V

Mixture Example M-11

[0386]

TABLE-US-00018 Composition Compound No. Abbreviation 1 PPTUI-3-2 8.0% 2 PPTUI-3-4 15.0% 3 PPTUI-4-4 30.0% 4 PTP(1)I-4-A1 43.0% 5 UMU-6-N 4.0% 100.0% Physical properties T(N, I) = 93.5 C. n.sub.e (20 C., 589.3 nm) > 1.860 n.sub.o (20 C., 589.3 nm) = 1.5290 (20 C., 1 kHz) = 3.7 .sub. = 6.7 .sub.1 (20 C.) 584 mPa .Math. s K.sub.1 = 10.2 K.sub.3 = 22.1 V.sub.0 = 1.75 V

Mixture Example M-12

[0387]

TABLE-US-00019 Composition Compound No. Abbreviation 1 PPTUI-3-4 15.0% 2 PPTUI-4-4 30.0% 3 PTP(1)I-4-A1 50.0% 4 UMU-6-N 5.0% 100.0% Physical properties T (N, I) = 81 C. n.sub.e (20 C., 589.3 nm) > 1.860 n.sub.o (20 C., 589.3 nm) = 1.5304 (20 C., 1 kHz) = 4.2 .sub.|| = 7.2 .sub.1 (20 C.) = 555 mPa .Math. s K.sub.1 = 9.1 K.sub.3 = 18.6 V.sub.0 = 1.56 V

Mixture Example M-13

[0388]

TABLE-US-00020 Composition MDA-12-2970 Compound No. Abbreviation 1 PPTUI-3-2 10.0% 2 PPTUI-3-4 10.0% 3 PPTUI-4-4 25.0% 4 CPTP-4-1 3.0% 5 CPTP-3-2 3.0% 6 CPGP-5-2 4.0% 7 CPGP-5-3 4.0% 8 UMU-6-N 5.0% 9 CC-4-V 10.0% 10 PTP(1)I-4-A1 26.0% 100.0% Physical properties T (N, I) = 117.5 C. n (20 C., 589.3 nm) = 0.2963 n.sub.o = 1.5170 (20 C., 1 kHz) = 4.3 .sub.|| = 7.3 .sub.1 (20 C.) = 418 mPa .Math. s K.sub.1 = 14.0 K.sub.3 = 21.6 V.sub.0 = 1.90 V

Mixture Example M-14

[0389]

TABLE-US-00021 Composition MDA-12-2981 Compound No. Abbreviation 1 PPTUI-3-2 20.0% 2 PPTUI-3-4 20.0% 3 PPTUI-4-4 31.0% 4 CPTP-4-1 3.0% 5 CPTP-3-2 3.0% 6 CPGP-5-2 4.0% 7 CPGP-5-3 4.0% 8 UMU-6-N 5.0% 9 PTP(1)I-4-A1 10.0% 100.0% Physical properties T (N, I) = 158 C. n.sub.e (20 C., 589.3 nm) > 1.860 n.sub.o (20 C., 589.3 nm) = 1.5184 (20 C., 1 kHz) = 5.0 .sub.|| = 7.9 .sub.1 (20 C.) = 694 mPa .Math. s K.sub.1 = 17.1 K.sub.3 = 29.0 V.sub.0 = 1.96 V

Mixture Example M-15

[0390]

TABLE-US-00022 Composition MDA-12-3009 Compound No. Abbreviation 1 PZG-4-N 6.0% 2 PPTUI-3-2 10.0% 3 PPTUI-3-4 16.0% 4 PPTUI-4-4 30.0% 5 CC-3-V 8.0% 6 PTP(1)I-4-A1 30.0% 100.0% Physical properties T (N, I) = 95.5 C. n.sub.e (20 C., 589.3 nm) > 1.860 n.sub.o (20 C., 589.3 nm) = 1.5212 (20 C., 1 kHz) = 3.6 .sub.|| = 6.7 .sub.1 (20 C.) = 364 mPa .Math. s K.sub.1 = 11.4 K.sub.3 = 20.8 V.sub.0 = 1.87 V

Mixture Example M-16

[0391]

TABLE-US-00023 Composition MDA-12-3028 Compound No. Abbreviation 1 PZG-4-N 6.0% 2 PPTUI-3-2 10.0% 3 PPTUI-3-4 16.0% 4 PPTUI-4-4 30.0% 5 CC-3-V 18.0% 6 PTP(1)I-4-A1 20.0% 100.0% Physical properties T (N, I) = 97 C. n (20 C., 589.3 nm) = 0.2737 n.sub.o = 1.5137 (20 C., 1 kHz) = 3.5 .sub.|| = 6.5 .sub.1 (20 C.) = 244 mPa .Math. s K.sub.1 = 12.3 K.sub.3 = 19.1 V.sub.0 = 1.98 V

Mixture Example M-17

[0392]

TABLE-US-00024 Composition MDA-12-3029 Compound No. Abbreviation 1 PPTUI-3-2 10.0% 2 PPTUI-3-4 16.0% 3 PPTUI-4-4 30.0% 4 CC-3-V 10.0% 5 PTP(1)I-4-A1 30.0% 6 UMU-6-N 4.0% 100.0% Physical properties T (N, I) = 99 C. n.sub.e (20 C., 589.3 nm) > 1.860 n.sub.o (20 C., 589.3 nm) = 1.5198 (20 C., 1 kHz) = 3.7 .sub.|| = 6.5 .sub.1 (20 C.) = 371 mPa .Math. s K.sub.1 = 11.8 K.sub.3 = 21.2 V.sub.0 = 1.90 V

Mixture Example M-18

[0393]

TABLE-US-00025 Composition Compound No. Abbreviation 1 PPTUI-3-2 15.0% 2 PPTUI-3-4 15.0% 3 PPTUI-4-4 22.0% 4 CPTP-4-1 3.0% 5 CPTP-3-2 3.0% 6 CPTP-5-2 4.0% 7 CPGP-5-3 4.0% 8 UMU-6-N 5.0% 9 PTP(1)I-4-A1 29.0% 100.0% Physical properties T (N, I) = 129.5 C. n.sub.e (20 C., 589.3 nm) > 1.860 n.sub.o (20 C., 589.3 nm) = 1.5232 (20 C., 1 kHz) = 4.6 .sub.|| = 7.6 .sub.1 (20 C.) = 662 mPa .Math. s K.sub.1 = 13.9 K.sub.3 = 25.8 V.sub.0 = 1.84 V

Mixture Example M-19

[0394]

TABLE-US-00026 Composition Compound No. Abbreviation 1 PTG(c3)TP-4-4 30.0% 2 PTP(1)I-4-A1 30.0% 3 PTiNpTP-4-6 14.0% 4 PTiNpTP-3-6 13.0% 5 PTiNpTP-3-5 13.0% 100.0% Physical properties T (N, I) = 112.5 C. n.sub.e (20 C., 589.3 nm) > 1.860 n.sub.o (20 C., 589.3 nm) = 1.5490 (20 C., 1 kHz) = 1.0 .sub.|| = 3.7 .sub.1 (20 C.) = 1260 mPa .Math. s K.sub.1 = 9.5 K.sub.3 = 63.9 V.sub.0 = 3.27 V

Mixture Example M-20

[0395]

TABLE-US-00027 Composition Compound No. Abbreviation 1 PTP(c3; 1)TP-4-4 30.0% 2 PTP(1)I-4-A1 30.0% 3 PTiNpTP-4-6 14.0% 4 PTiNpTP-3-6 13.0% 5 PTiNpTP-3-5 13.0% 100.0% Physical properties T (N, I) = 127 C. (20 C., 1 kHz) = 0.9 .sub.|| = 3.5 .sub.1 (20 C.) = 2142 mPa .Math. s K.sub.1 = 10.4 K.sub.3 = 42.4 V.sub.0 = 3.68 V

Mixture Example M-21

[0396]

TABLE-US-00028 Composition Compound No. Abbreviation 1 PTG(c3)TP-4-4 30.0% 2 PTP(1)I-4-A1 30.0% 3 PTiNpTP-4-6 10.0% 4 PTiNpTP-3-6 10.0% 5 PTiNpTP-3-5 10.0% 6 PPTUI-3-4 10.0% 100.0% Physical properties T (N, I) = 111.5 C. n.sub.e (20 C., 589.3 nm) > 1.860 n.sub.o (20 C., 589.3 nm) = 1.5420 (20 C., 1 kHz) = 1.0 .sub.|| = 3.7 .sub.1 (20 C.) = 979 mPa .Math. s K.sub.1 = 11.0 K.sub.3 = 34.9 V.sub.0 = 3.43 V

Mixture Example M-22

[0397]

TABLE-US-00029 Composition Compound No. Abbreviation 1 PTG(c3)TP-4-4 30.0% 2 PTP(1)I-4-A1 40.0% 3 PTiNpTP-4-6 10.0% 4 PTiNpTP-3-6 10.0% 5 PTiNpTP-3-5 10.0% 100.0% Physical properties T (N, I) = 96.5 C. n.sub.e (20 C., 589.3 nm) > 1.860 n.sub.o (20 C., 589.3 nm) = 1.5488 (20 C., 1 kHz) = 1.0 .sub.|| = 3.7 .sub.1 (20 C.) = 927 mPa .Math. s K.sub.1 = 9.5 K.sub.3 = 25.8 V.sub.0 = 3.26 V

Mixture Example M-23

[0398]

TABLE-US-00030 Composition Compound No. Abbreviation 1 PPTUI-3-2 36.0% 2 PPTUI-3-4 58.0% 3 PTP(1)I-4-A1 6.0% 100.0% Physical properties T (N, I) = 167.5 C. (20 C., 1 kHz) = 1.2 .sub.|| = 3.9 .sub.1 (20 C.) = 762 mPa .Math. s K.sub.1 = 16.6 K.sub.3 = 45.4 V.sub.0 = 3.86 V

Mixture Example M-24

[0399]

TABLE-US-00031 Composition Compound No. Abbreviation 1 PPTUI-3-2 11.0% 2 PPTUI-3-4 17.0% 3 PPTUI-4-4 30.0% 4 PTP(1)I-4-A1 40.0% 5 PPGU-3-F 2.0% 100.0% Physical properties T (N, I) = 104 C. (20 C., 1 kHz) = 1.3 .sub.|| = 4.0 .sub.1 (20 C.) = 611 mPa .Math. s K.sub.1 = 11.7 K.sub.3 = 27.6 V.sub.0 = 3.13 V

Mixture Example M-25

[0400]

TABLE-US-00032 Composition Compound No. Abbreviation 1 PPTUI-3-2 10.0% 2 PPTUI-3-4 10.0% 3 PPTUI-4-4 30.0% 4 PTP(1)I-4-A1 40.0% 5 PVG-3-S 10.0% 100.0% Physical properties T (N, I) = C. (20 C., 1 kHz) = 2.9 .sub.|| = 5.8 .sub.1 (20 C.) = 528 mPa .Math. s K.sub.1 = 11.0 K.sub.3 = 18.8 V.sub.0 = 2.05 V

Mixture Example M-26

[0401]

TABLE-US-00033 Composition Compound No. Abbreviation 1 PPTUI-3-4 15.00% 2 PGUQU-3-F 4.00% 3 PGUQU-5-F 4.00% 4 PTiNpTP-3-6 15.00% 5 PTiNpTP-3-5 15.00% 6 PTiNpTP-4-6 15.00% 7 PTP(1)I-4-A1 32.00% 100.0% Physical properties T (N, I) = 115 C. (20 C., 1 kHz) = 2.9 .sub.|| = 5.7 .sub.1 (20 C.) = 1471 mPa .Math. s K.sub.1 = 12.7 K.sub.3 = 29.6 V.sub.0 = 2.23 V

Mixture Example M-27

[0402]

TABLE-US-00034 Composition Compound No. Abbreviation 1 PPTUI-3-2 11.00% 2 PPTUI-3-4 16.00% 3 PPTUI-4-4 30.00% 4 PTP(1)I-4-A1 40.00% 5 PPGU-3-F 3.00% 100.0% Physical properties T(N, I) = 105 C. (20 C., 1 kHz) = 1.5 .sub.|| = 4.2 .sub.1 (20 C.) = 614 mPa .Math. s K.sub.1 = 12.3 K.sub.3 = 25.5 V.sub.0 = 3.05 V

Mixture Example M-28

[0403]

TABLE-US-00035 Composition Compound No. Abbreviation 1 PPTUI-3-2 11.00% 2 PPTUI-3-4 18.00% 3 PPTUI-4-4 20.00% 4 PTP(1)I-4-A1 30.00% 5 PPGU-3-F 1.00% 6 PTiNpTP-3-6 20.00% 100.0% Physical properties T(N, I) = 119 C. (20 C., 1 kHz) = 1.2 .sub.|| = 3.8 .sub.1 (20 C.) = 916 mPa .Math. s K.sub.1 = 12.6 K.sub.3 = 30.0 V.sub.0 = 3.48 V

Mixture Example M-29

[0404]

TABLE-US-00036 Composition Compound No. Abbreviation 1 PPTUI-3-2 20.00% 2 PPTUI-3-4 29.00% 3 PTP(1)I-4-A1 30.00% 4 PPGU-3-F 1.00% 5 PTiNpTP-3-6 10.00% 6 PTiNpTP-3-5 10.00% 100.0% Physical properties T(N, I) = 124 C. (20 C., 1 kHz) = 2.0 .sub.|| = 4.8 .sub.1 (20 C.) = 1515 mPa .Math. s K.sub.1 = 11.0 K.sub.3 = 30.3 V.sub.0 = 2.45 V

Mixture Example M-30

[0405]

TABLE-US-00037 Composition Compound No. Abbreviation 1 PTG(c3)TP-4-4 30.00% 2 PTP(1)I-4-A1 30.00% 3 PTiNpTP-4-6 10.00% 4 PTiNpTP-3-6 10.00% 5 PTiNpTP-3-5 10.00% 6 PPTUI-3-4 5.00% 7 PPGU-3-F 1.00% 8 PGUQU-3-F 2.00% 9 PGUQU-5-F 2.00% 100.0% Physical properties T(N, I) = 110.5 C. (20 C., 1 kHz) = 1.2 .sub.|| = 3.9 .sub.1 (20 C.) = 922 mPa .Math. s K.sub.1 = 13.6 K.sub.3 = 32.4 V.sub.0 = 3.6 V

Mixture Example M-31

[0406]

TABLE-US-00038 Composition Compound No. Abbreviation 1 PTG(c3)TP-4-4 30.00% 2 PTP(1)I-4-A1 33.00% 3 PTiNpTP-4-6 10.00% 4 PTiNpTP-3-6 10.00% 5 PTiNpTP-3-5 10.00% 6 PZG-5-N 6.00% 7 PPGU-3-F 1.00% 100.0% Physical properties T(N, I) = 98.5 C. (20 C., 1 kHz) = 3.5 .sub.|| = 6.6 .sub.1 (20 C.) = 1443 mPa .Math. s K.sub.1 = 10.2 K.sub.3 = 23.6 V.sub.0 = 1.8 V

Mixture Example M-32

[0407]

TABLE-US-00039 Composition Compound No. Abbreviation 1 PPTUI-3-2 36.00% 2 PPTUI-3-4 54.00% 3 PTP(1)I-4-A1 10.00% 100.0% Physical properties T(N, I) = 157 C. (20 C., 1 kHz) = 1.2 .sub.|| = 4.0 .sub.1 (20 C.) = 710 mPa .Math. s K.sub.1 = 17.3 K.sub.3 = 43.5 V.sub.0 = 3.99 V

Mixture Example M-33

[0408]

TABLE-US-00040 Composition Compound No. Abbreviation 1 PPTUI-3-2 35.00% 2 PPTUI-3-4 50.00% 3 PTP(1)I-4-A1 15.00% 100.0% Physical properties T(N, I) = 148 C. (20 C., 1 kHz) = 1.2 .sub.|| = 3.9 .sub.1 (20 C.) = 713 mPa .Math. s K.sub.1 = 16.4 K.sub.3 = 40.2 V.sub.0 = 3.92 V

Mixture Example M-34

[0409]

TABLE-US-00041 Composition Compound No. Abbreviation 1 PPTUI-3-2 35.00% 2 PPTUI-3-4 45.00% 3 PTP(1)I-4-A1 20.00% 100.0% Physical properties T(N, I) = 140 C. (20 C., 1 kHz) = 1.2 .sub.|| = 3.9 .sub.1 (20 C.) = 695 mPa .Math. s K.sub.1 = 14.9 K.sub.3 = 39.9 V.sub.0 = 3.77 V

Mixture Example M-35

[0410]

TABLE-US-00042 Composition Compound No. Abbreviation 1 PPTUI-3-2 35.00% 2 PPTUI-3-4 40.00% 3 PTP(1)I-4-A1 25.00% 100.0% Physical properties T(N, I) = 132 C. (20 C., 1 kHz) = 1.2 .sub.|| = 3.8 .sub.1 (20 C.) = 676 mPa .Math. s K.sub.1 = 13.9 K.sub.3 = 36.2 V.sub.0 = 3.66 V

Mixture Example M-36

[0411]

TABLE-US-00043 Composition Compound No. Abbreviation 1 PPTUI-3-2 35.00% 2 PPTUI-3-4 35.00% 3 PTP(1)I-4-A1 30.00% 100.0% Physical properties T(N, I) = 124 C. (20 C., 1 kHz) = 1.1 .sub.|| = 3.8 .sub.1 (20 C.) = 665 mPa .Math. s K.sub.1 = 13.1 K.sub.3 = 33.2 V.sub.0 = 3.58 V

Mixture Example M-37

[0412]

TABLE-US-00044 Composition Compound No. Abbreviation 1 PTP(1)I-4-A1 16.00% 2 PP-1-2V1 6.00% 3 PPTUI-3-2 20.00% 4 PPTUI-3-4 38.00% 5 GGP-5-CL 18.00% 6 PGUQU-5-F 2.00% 100.0% Physical properties T(N, I) = 123 C. n.sub.e (20 C., 589.3 nm) > 1.860 n.sub.o (20 C., 589.3 nm) = 1.5520 (20 C., 1 kHz) = 3.4 .sub.|| = 6.4 .sub.1 (20 C.) = 498 mPa .Math. s K.sub.1 = 15.5 K.sub.3 = 30.2 V.sub.0 = 2.27 V

Mixture Example M-38

[0413]

TABLE-US-00045 Composition Compound No. Abbreviation 1 PPTUI-3-2 20.00% 2 PPTUI-3-4 32.00% 3 GGP-5-CL 18.00% 4 PTP(1)I-4-A1 30.00% 100.0% Physical properties T(N, I) = 112.5 C. n.sub.e (20 C., 589.3 nm) > 1.860 n.sub.o (20 C., 589.3 nm) = 1.5250 (20 C., 1 kHz) = 2.7 .sub.|| = 5.8 .sub.1 (20 C.) = 573 mPa .Math. s K.sub.1 = 12.9 K.sub.3 = 31.0 V.sub.0 = 2.30 V

Mixture Example M-39

[0414]

TABLE-US-00046 Composition Compound No. Abbreviation 1 PPTUI-3-2 13.00% 2 PPTUI-3-4 20.00% 3 PPTUI-4-4 33.00% 4 PTP(1)I-4-A1 33.00% 5 PPGU-3-F 1.00% 100.0% Physical properties T(N, I) = 113.5 C. n.sub.e (20 C., 589.3 nm) > 1.860 n.sub.o (20 C., 589.3 nm) = 1.5279 (20 C., 1 kHz) = 1.2 .sub.|| = 3.9 .sub.1 (20 C.) = 615 mPa .Math. s K.sub.1 = 11.8 K.sub.3 = 37.4 V.sub.0 = 3.29 V

Mixture Example M-40

[0415]

TABLE-US-00047 Composition Compound No. Abbreviation 1 PPTUI-3-2 11.00% 2 PPTUI-3-4 18.00% 3 PPTUI-4-4 30.00% 4 PTP(1)I-4-A1 40.00% 5 PPGU-3-F 1.00% 100.0% Physical properties T(N, I) = 103 C. n.sub.e (20 C., 589.3 nm) > 1.860 n.sub.o (20 C., 589.3 nm) = 1.5269 (20 C., 1 kHz) = 1.2 .sub.|| = 3.9 .sub.1 (20 C.) = 604 mPa .Math. s K.sub.1 = 11.6 K.sub.3 = 28.4 V.sub.0 = 3.29 V

Mixture Example M-41

[0416]

TABLE-US-00048 Composition Compound No. Abbreviation 1 PPTUI-3-2 11.00% 2 PPTUI-3-4 18.00% 3 PPTUI-4-4 30.00% 4 PTP(1)I-4-A1 30.00% 5 PPGU-3-F 1.00% 6 PTiNpTP-3-6 10.00% 100.0% Physical properties T(N, I) = 117.5 C. n.sub.e (20 C., 589.3 nm) > 1.860 n.sub.o (20 C., 589.3 nm) = 1.5289 (20 C., 1 kHz) = 1.2 .sub.|| = 3.9 .sub.1 (20 C.) = 753 mPa .Math. s K.sub.1 = 12.8 K.sub.3 = 32.6 V.sub.0 = 3.47 V

[0417] The mixture examples have been characterised by measurement of application relevant data. The results are summarised in table 1

TABLE-US-00049 TABLE 1 Example .sub.r, tan .sub. r, .sub.r, tan .sub. r, M-1 3.30 0.0021 2.44 0.0053 0.258 49.1 M-2 3.30 0.0013 2.40 0.0048 0.273 57.4 M-3 3.43 0.0020 2.48 0.0051 0.278 54.9 M-4 3.42 0.0022 2.49 0.0053 0.271 50.8 M-5 3.02 0.0029 2.36 0.0097 0.218 22.4 M-6 3.09 0.0031 2.38 0.0124 0.231 18.6 M-7 3.12 0.0028 2.39 0.0098 0.234 24.0 M-8 3.10 0.0028 2.37 0.0099 0.234 23.7 M-9 3.02 0.0028 2.36 0.0099 0.220 22.1 M-10 3.19 0.0033 2.42 0.0098 0.241 24.6 M-11 3.18 0.0034 2.41 0.0097 0.240 24.7 M-12 3.14 0.0036 2.40 0.0094 0.236 25.1 M-13 3.06 0.0030 2.39 0.0096 0.219 22.8 M-14 3.18 0.0029 2.42 0.0111 0.241 21.7 M-15 3.09 0.0041 2.40 0.0125 0.221 17.7 M-16 2.99 0.0040 2.38 0.0127 0.202 16.0 M-17 3.07 0.0032 2.39 0.0103 0.222 21.6 M-18 3.17 0.0030 2.41 0.0099 0.239 24.1 M-19 3.29 0.0022 2.42 0.0059 0.264 44.3 M-20 3.30 0.0021 2.42 0.0050 0.268 53.4 M-21 3.27 0.0024 2.41 0.0067 0.264 39.6 M-22 3.27 0.0024 2.42 0.0063 0.260 41.6 M-23 3.29 0.0029 2.45 0.0116 0.258 22.1 M-24 3.19 0.0031 2.41 0.0089 0.245 27.5 M-25 3.25 0.0041 2.44 0.0100 0.251 25.1 M-26 t.b.d. t.b.d. t.b.d. t.b.d. t.b.d. t.b.d. M-27 3.19 0.0031 2.40 0.0095 0.247 26.1 M-28 3.26 0.0027 2.42 0.0086 0.257 30.0 M-29 3.28 0.0026 2.42 0.0085 0.263 31.0 M-30 3.28 0.0025 2.42 0.0069 0.260 37.7 M-31 3.25 0.0031 2.44 0.0085 0.251 29.3 M-32 3.28 0.0029 2.43 0.0111 0.260 23.4 M-33 t.b.d. t.b.d. t.b.d. t.b.d. t.b.d. t.b.d. M-34 3.26 0.0032 2.41 0.0108 0.259 24.0 M-35 t.b.d. t.b.d. t.b.d. t.b.d. t.b.d. t.b.d. M-36 3.25 0.0025 2.42 0.0094 0.255 27.1 M-37 t.b.d. t.b.d. t.b.d. t.b.d. t.b.d. t.b.d. M-38 t.b.d. t.b.d. t.b.d. t.b.d. t.b.d. t.b.d. M-39 3.21 0.0031 2.42 0.0100 0.245 24.6 M-40 3.22 0.0032 2.43 0.0097 0.246 25.3 M-41 3.26 0.0028 2.43 0.0090 0.253 28.0 * tbd = to be determined.

[0418] The mixtures M1 to M-41 show excellent tunability and material quality and have excellent overall properties especially for the application in phased array antennae.

[0419] The following table 2 shows the influence of an increasing proportion of compound PTP(1)I-4-A1, an example of compounds of formula A, added to the a liquid crystal host mixture C-1 from the state of the art.

TABLE-US-00050 TABLE 2 Mixture .sub.r, tan .sub. r, .sub.r, tan .sub. r, .sub.r C-1 2.48 0.0034 1.61 0.0123 0.87 0.260 21.1 M-32 3.28 0.0029 2.43 0.0111 0.85 0.260 23.4 M-34 3.26 0.0032 2.41 0.0108 0.85 0.259 24.0 M-36 3.25 0.0025 2.42 0.0094 0.83 0.255 27.1

[0420] As can be seen from table 2, the addition of compound PTP(1)I-4-A1 leads to an increase in the material quality () due to the same or only slightly lower values for the tunability (), concurrently with significantly decreased values for the dielectric loss (tan ).

[0421] The beneficial effect increases with increasing proportions of the component of formula A (PTP(1)I-4-A1).