AN OILY COMPOSITION

Abstract

Provided are an oily composition and use thereof. The oily composition comprises: a) a first volatile acyclic silicone oil selected from among acyclic silicone oils with 2 to 4 silicon atoms, optionally containing C1-C6 alkyl groups, and mixtures thereof; b) a second volatile acyclic silicone oil selected from among acyclic silicone oils with 5 to 6 silicon atoms, optionally containing C1-C6 alkyl groups, and mixtures thereof.

Claims

1-20. (canceled)

21. An oily composition comprising: a) a first volatile acyclic silicone oil selected from among acyclic silicone oils with 2 to 4 silicon atoms, optionally containing C1-C6 alkyl groups, and mixtures thereof; b) a second volatile acyclic silicone oil selected from among acyclic silicone oils with 5 to 6 silicon atoms, optionally containing C1-C6 alkyl groups, and mixtures thereof; and c), a volatile hydrocarbon-based oil; wherein ingredient (a) is present in an amount of from 10% to 40% based on the total weight of the composition; ingredient (b) is present in an amount of from 20% to 40% based on the total weight of the composition; and ingredient (c) is present in an amount of from 20% to 70% based on the total weight of the composition.

22. The oily composition of claim 1 further comprising: a) a first volatile acyclic silicone oil selected from among acyclic silicone oils with 2 to 4 silicon atoms, optionally containing C1-C2 alkyl groups, and mixtures thereof; b) a second volatile acyclic silicone oil selected from among acyclic silicone oils with 5 to 6 silicon atoms, optionally containing C1-C2 alkyl groups, and mixtures thereof; and c), a volatile hydrocarbon-based oil; wherein ingredient (a) is present in an amount of from 10% to 40% based on the total weight of the composition; ingredient (b) is present in an amount of from 20% to 40% based on the total weight of the composition; and ingredient (c) is present in an amount of from 20% to 70% based on the total weight of the composition.

23. The oily composition of claim 1, characterized in that ingredient (c) is selected from among branched alkanes containing 8 to 16 carbon atoms, or mixtures thereof.

24. The oily composition of claim 1, characterized in that ingredient (a) has a kinematic viscosity of from 0.65 to 1.5 cSt at 25° C.

25. The oily composition of claim 1, characterized in that ingredient (b) has a kinematic viscosity at 25° C. of greater than 1.5 cSt and less than 3 cSt.

26. The oily composition of claim 1, characterized in that ingredient (a) has a flash point of greater than or equal to −6° C. and less than 70° C.

27. The oily composition of claim 1, characterized in that ingredient (b) has a flash point of greater than or equal to 70° C. and less than 100° C.

28. The oily composition of claim 1, characterized in that ingredient (c) has a flash point of 40 to 70° C.

29. The oily composition of claim 1 further comprising: a) octamethyltrisiloxane, b) dodecamethylpentasiloxane, and c) isododecane; wherein octamethyltrisiloxane, dodecamethylpentasiloxane and isododecane, in terms of their contents, have the relationship: isododecane>dodecamethylpentasiloxane>octamethyltrisiloxane.

30. The oily composition of claim 1 further comprising: a) hexamethyldisiloxane, b) dodecamethylpentasiloxane, and c) isododecane; wherein hexamethyldisiloxane, dodecamethylpentasiloxane and isododecane, in terms of their contents, have the relationship: isododecane>dodecamethylpentasiloxane>hexamethyldisiloxane.

31. The oily composition of claim 1 further comprising: a) decamethyltetrasiloxane, b) dodecamethylpentasiloxane, and c) isododecane; wherein decamethyltetrasiloxane, dodecamethylpentasiloxane and isododecane, in terms of their contents, have the relationship: decamethyltetrasiloxane>isododecane≥dodecamethylpentasiloxane.

32. The oily composition of claim 1, characterized in that acyclic silicone oils with more than 7 silicon atoms are present in the oily composition in an amount of less than 1 wt %, based on the total weight of the oily composition.

33. The oily composition of claim 1, characterized in that cyclic silicone oils are present in the oily composition in an amount of less than 1 wt %, based on the total weight of the oily composition.

34. The oily composition of claim 1, characterized in that water is present in the oily composition in an amount of less than 1 wt %, based on the total weight of the oily composition.

35. The oily composition of claim 1, characterized in that powders are present in the oily composition in an amount of less than 1 wt %, based on the total weight of the oily composition.

36. The oily composition of claim 1, characterized in that plant-derived ingredients are present in the oily composition in an amount of less than 1 wt %, based on the total weight of the oily composition.

37. The oily composition of claim 1, characterized in that non-volatile oils are present in the oily composition in an amount of less than 1 wt %, based on the total weight of the oily composition.

38. The oily composition of claim 1, characterized in that ingredients (a), (b) and (c) are used in an amount of more than 99 wt %, based on the total weight of the oily composition.

39. Use of the oily composition of claim 1 in personal care and cosmetic products.

40. Use of the oily composition of claim 1 as a carrier liquid for siloxane polymers.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0059] FIG. 1 is a graph depicting the evaporation curves of the oily compositions of Examples 1-3 and Comparative Examples 1-2, with D5, BELSIL® DM 1 PLUS, BELSIL® DM 2 and IP 12 used as references.

[0060] FIG. 2 is a graph depicting the evaporation curves of the oily compositions of Examples 4-8 and Comparative Examples 3-4, with D5, BELSIL® DM 1 PLUS, BELSIL® DM 2 and IP 12 used as references.

[0061] FIG. 3 is a graph showing the application of samples on a forearm for skin feel test.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0062] The invention is further illustrated by the following examples, but is not limited to the scope thereof. Any experimental methods with no conditions specified in the following examples are selected according to the conventional methods and conditions, or product specifications.

[0063] The ingredients used in the Examples and Comparative Examples are all commercially available, with detailed information as follows:

[0064] BELSIL® DM 0.65 from Wacker Chemicals, a hexamethyldisiloxane, being a first volatile acyclic silicone oil with a kinematic viscosity of about 0.65 cSt measured at 25° C. according to DIN 53018, and a flash point of −6° C.;

[0065] BELSIL® DM 1 PLUS from Wacker Chemicals, a polydimethylsiloxane, being a first volatile acyclic silicone oil with a kinematic viscosity of about 1.23 cSt measured at 20° C. according to DIN 51562, and a flash point of 32° C.;

[0066] BELSIL® DM 2 from Wacker Chemicals, a polydimethylsiloxane, being a second volatile acyclic silicone oil with a kinematic viscosity of 2 cSt measured at 25° C. according to DIN 51562, and a flash point of 89° C.;

[0067] BELSIL® DM 5 from Wacker Chemicals, a polydimethylsiloxane, with a kinematic viscosity of about 5 cSt measured at 25° C. according to DIN 53019, and a flash point of 130° C.;

[0068] XIAMETER™ PMX-200 Silicone Fluid 1.5 cSt from Dow Corning, a polydimethylsiloxane, being a first volatile acyclic silicone oil with a kinematic viscosity of 1.5 cSt at 25° C. and a flash point of 57° C.;

[0069] Silsoft 034 from Momentive Performance Materials, a Caprylyl Methicone with a kinematic viscosity of 3 cSt at 25° C. and a flash point of 110° C.;

[0070] IP 12 from Idemitsu Kosan, an isododecane.

[0071] Unless otherwise specified, wt % hereinafter is based on the total weight of the oily composition.

[0072] Examples 1-3 and Comparative Examples 1-2: Preparation of oily compositions comprising volatile acyclic silicone oils and volatile hydrocarbon-based oils

[0073] The oily compositions of Examples 1-3 and Comparative Examples 1-2 were obtained by uniformly mixing all ingredients according to Table 1.

TABLE-US-00001 TABLE 1 Ingredients (wt %) Ex.1 Ex.2 Ex.3 C.Ex.1 C.Ex.2 BELSIL ® DM 0.65 / 10 / 10 / BELSIL ® DM 1 PLUS 10 / / / 10 XIAMETER ™ PMX-200 / / 40 / / Silicone Fluid 1.5 cSt BELSIL ® DM 2 30 30 30 / / Silsoft 034 / / / 30 30 IP 12 60 60 30 60 60

[0074] Examples 4-8 and Comparative Examples 3-4: Preparation of oily compositions comprising only volatile acyclic silicone oils

[0075] The oily compositions of Examples 4-8 and Comparative Examples 3-4 were obtained by uniformly mixing all ingredients according to Table 3.

TABLE-US-00002 TABLE 2 Ingredients (wt %) Ex.4 Ex.5 Ex.6 Ex.7 Ex.8 C.Ex.3 C.Ex.4 BELSIL ® 30 40 70 80 20 10 10 DM 1 PLUS BELSIL ® DM 2 70 60 30 20 80 90 80 BELSIL ® DM 5 / / / / / / 10

Example 9: Evaporation Rate Test

[0076] The evaporation rate curves of the oily compositions of all examples and comparative examples were tested according to DIN 53249 at 25° C., with D5, BELSIL® DM 1 PLUS, BELSIL® DM 2 and IP 12 used as references. The specific test results are shown in FIGS. 1-2, in which the ordinate indicates the percentage of the weight loss of the sample due to evaporation to the total weight of the initial sample.

[0077] It can be seen from FIG. 1 that the evaporation curves of BELSIL® DM 1 PLUS, BELSIL® DM 2 and IP 12 distinctly deviate from that of D5; the evaporation curves of the oily compositions of Comparative Examples 1-2 are closer to that of D5 than the above single substances, but still have a large deviation from that of D5; however, the evaporation curves of the oily compositions of Examples 1-3 are very close to that of D5, indicating that they can volatilize slowly at a relatively uniform rate, with 80-95 wt % volatilized after 2 hours.

[0078] As can be seen by comparing FIG. 1 with FIG. 2, the evaporation curves of the oily compositions of Examples 4-8 are closer to that of D5 than BELSIL® DM 1 PLUS, BELSIL® DM 2 and IP 12, but slightly farther from the D5 curve than Examples 1-3, with only 65-85 wt % volatilized after 2 hours. The evaporation curves of Comparative Examples 3-4 deviate from that of D5, mainly due to the high content of BELSIL® DM 2 or the inclusion of BELSIL® DM 5.

Example 10: Cream Tests on Skin

[0079] Four different skin creams A, B, C and D were prepared from D5, the oily compositions of Examples 1 & 4 and Caprylyl Methicone respectively, and evaluated by 35 panelists in terms of the skin feels in the initial, middle and late stages after the creams were applied on their forearms. The skin feels in the initial, middle and late stages after application herein means the feels on skin after 0.25 μL of the test creams were respectively applied in a circular motion on a clean and dry forearm within a circular area of 4 cm in diameter for 5 cycles, 30 cycles and until completely absorbed (see FIG. 3).

[0080] The scoring rules are as follows: using skin cream A as a reference, creams B, C and D are respectively compared with A; if A and B (or C, or D) are similar in terms of the skin feels, then each scores 0.5; if A has better skin feels than B (or C, or D), then A scores 1, and B (or C, or D) scores 0, and the final result is the average of the scores. If the scores of A and B (or C, or D) are close, then they give the similar feels on skin, while a larger score difference means a greater gap in the skin feels.

[0081] The formulations of the skin creams are shown in Table 3 below (in parts by weight).

TABLE-US-00003 TABLE 3 P h a s Trade e INCI Names names Suppliers A B C D I Cyclopentasiloxane BELSIL ® WACKER 8.00 / / / CM 040 CN Oily composition of N/A N/A / 8.00 / / Ex. 1 Oily composition of N/A N/A / / 8.00 / Ex. 4 Caprylyl Methicone Silsoft 034 Momentive / / / 8.00 Dimethicone, BELSIL ® WACKER 3.00 3.00 3.00 3.00 Dimethiconol GB 1020 Silica Dimethyl HDK ® H WACKER 1.00 1.00 1.00 1.00 Silylate 20 Ethylhexyl Parsol ® DSM 5.00 5.00 5.00 5.00 methoxycinnamate MCX Caprylic/capric CRODAMOL CRODA 5.00 5.00 5.00 5.00 triglyceride TM GTCC Dimethicone, BELSIL ® WACKER 5.00 5.00 5.00 5.00 caprylyl dimethicone WO 5000 ethoxy glucoside Cetyl PEG/PPG-10/1 ABIL ® EM Evonik 1.60 1.60 1.60 1.60 Dimethicone 90 II Glycerin N/A Emery 3.00 3.00 3.00 3.00 Oleo- chemicals Butanediol N/A Celanese 7.00 7.00 7.00 7.00 NaCI N/A N/A 0.50 0.50 0.50 0.50 Disodium EDTA N/A Akzo Nobel 0.05 0.05 0.05 0.05 Deionized water N/A N/A Added Added Added Added up to up to up to up to 100 100 100 100 III Preservative N/A N/A Appro- Appro- Appro- Appro- priate priate priate priate amount amount amount amount

[0082] The preparation process was as follows:

[0083] 1) all ingredients of phases I and II were separately mixed well according to Table 3;

[0084] 2) phases I and II were separately heated to 55° C., and then phase I was slowly added into phase II while stirring followed by homogenizing for 3-5 minutes;

[0085] 3) phase Ill was added to the mixture of phase I and II to mix well.

[0086] Tables 4-6 respectively show the scores of the skin feels of creams B, C and D compared with cream A. As can be seen from Tables 4 and 5, the oily composition of Example 1 is the same as D5 in terms of almost all skin feels, except spreadability in the initial stage and silkiness in the middle stage after application; the oily composition of Example 4 is inferior to Example 1 in approximating the skin feels of D5. Table 6 shows that Caprylyl Methicone is rather different from D5 in terms of all skin feel indicators.

TABLE-US-00004 TABLE 4 Score Stage Indicator A B Initial stage after Spreadability 0.2 0.8 application Middle stage Silkiness 0.4 0.6 after application Late stage after Silkiness 0.5 0.5 application Stickiness 0.5 0.5 Moisture 0.5 0.5

TABLE-US-00005 TABLE 5 Score Stage Indicator A C Initial stage after Spreadability 0.2 0.8 application Middle stage Silkiness 0.3 0.7 after application Late stage after Silkiness 0.6 0.4 application Stickiness 0.4 0.6 Moisture 0.4 0.6

TABLE-US-00006 TABLE 6 Score Stage Indicator A D Initial stage after Spreadability 0.1 0.9 application Middle stage Silkiness 0.3 0.7 after application Late stage after Silkiness 0.6 0.4 application Stickiness 1 0 Moisture 0.8 0.2

Example 11: Liquid Foundation Tests on Skin

[0087] Three different liquid foundations E, F and G were prepared from D5, the oily composition of Example 1 and Caprylyl Methicone respectively, and evaluated by 35 panelists in terms of the skin feels in the initial, middle and late stages after the foundations were applied on their forearms. The skin feels in the initial, middle and late stages are as defined in Example 10. The scoring rules are as follows: using liquid foundation E as a reference, F and G are respectively compared with E; if E and F (or G) are similar in terms of the skin feels, then each scores 0.5; if E has a better skin feels than F (or G), then E scores 1, and F (or G) scores 0, and the final result is the average of the scores. If the scores of E and F (or G) are close, then they give the similar feels on skin, while a larger score difference means a greater gap in the skin feels.

[0088] The formulations of the liquid foundations are shown in Table 7 below (in parts by weight).

TABLE-US-00007 TABLE 7 P h a s e INCI names Trade names Suppliers E F G I PEG-10 Dimethicone KF-6017 Shin-Etsu 1.50 1.50 1.50 Chemical Dimethicone, caprylyl BELSIL ® WACKER 0.98 0.98 0.98 dimethicone ethoxy WO 5000 glucoside Polyglyceryl-3 Lameform ® BASF 3.60 3.60 3.60 diisostearate TGI Cyclopentasiloxane BELSIL ® WACKER 15.91 / / CM 040 ON Oily composition of Ex. 1 N/A N/A / 15.91 / Caprylyl Methicone Silsoft 034 Momentive / / 15.91 Dimethicone, BELSIL ® WACKER 7.00 7.00 7.00 dimethicone/vinyl REG 1102 trimethylsiloxysilicate crosspolymer Isododecane IP 12 Idemitsu 3.00 3.00 3.00 Mineral oil N/A N/A 2.00 2.00 2.00 Titanium dioxide, TiO.sub.2 CR-50 K.S Pearl 7.00 7.00 7.00 triethoxycaprylylsilane AS Ferric oxide yellow, talc, I.O. Yellow K.S Pearl 0.36 0.36 0.36 triethoxycaprylylsilane AS Ferric oxide red, talc, I.O. Red AS K.S Pearl 0.12 0.12 0.12 triethoxycaprylylsilane Ferric oxide black, talc, I.O. Black AS K.S Pearl 0.08 0.08 0.08 triethoxycaprylylsilane Disteardimonium BENTONE ® Elements 2.00 2.00 2.00 hectorite 38 II Glycerin N/A N/A 8.56 8.56 8.56 Propylene glycol N/A N/A 4.28 4.28 4.28 NaCl N/A N/A 0.86 0.86 0.86 Deionized water N/A N/A Added Added Added up to 100 up to 100 up to 100 III Preservative N/A N/A Appro- Appro- Appro- priate priate priate amount amount amount

[0089] The preparation process was as follows:

[0090] 1) according to Table 7, the ingredients of phase I were mixed well except the volatile ones to form a homogeneous color paste, then the volatile ingredients were added to mix well;

[0091] 2) the well-mixed phase II was slowly added into phase I while stirring followed by homogenizing for 3-5 minutes;

[0092] 3) phase Ill was added to the mixture of phase I and II to mix well.

[0093] Tables 8-9 respectively show the scores of the skin feels of liquid foundations F and G compared with liquid foundation E. Tables 8-9 show that the oily composition of Ex. 1 is similar with D5 in terms of almost all skin feels, while Caprylyl Methicone is rather different from D5 in terms of all skin feel indicators.

TABLE-US-00008 TABLE 8 Score Stage Indicator E F Initial stage after Spreadability 0.6 0.4 application Middle stage Silkiness 0.7 0.3 after application Late stage after Silkiness 0.6 0.4 application Stickiness 0.5 0.5 Moisture 0.7 0.3

TABLE-US-00009 TABLE 9 Score Stage Indicator E G Initial stage after Spreadability 0.9 0.1 application Middle stage Silkiness 0.5 0.5 after application Late stage after Silkiness 0 1 application Stickiness 0.7 0.3 Moisture 0.9 0.1