Organopolysiloxane and powder treatment agent, preparation for external use and cosmetic comprising the same
View Patent ↗The present invention provides a novel organopolysiloxane in which a rich hydrophilic property is exhibited, not only superior miscibility with a hydrophilic component and but also a hydrophobic property are exhibited, and superior miscibility with both a silicone oil and a non-silicone oil such as a hydrocarbon oil, an ester oil or the like, and provide various usages of the aforementioned novel organopolysiloxane by developing the superior characteristics thereof such as good surface activity power, a distinctive sensation during use, increased stability and the like. A co-modified organopolysiloxane having a specified chemical structure in which a sugar alcohol-modified group and a long-chain hydrocarbon group are present in one molecule is produced. The co-modified organopolysiloxane is blended, as a surfactant, a powder treatment agent, a gelling agent or the like, or as a cosmetic raw material appropriately together with powder(s), oil agent(s) or the like, in a preparation for external use, and in particular, a cosmetic.
1. A co-modified organopolysiloxane represented by general formula (3):
wherein
each R 1 independently represents a substituted or non-substituted, linear or branched, alkyl group having 1 to 8 carbon atoms, with the proviso that R 2 and Q are excluded therefrom;
R 2 independently represents a substituted or non-substituted, and linear or branched alkyl group having 10 to 25 carbon atoms;
Q is a xylitol residue selected from the group consisting of —C 3 H 6 —OCH 2 [CH(OH)] 3 CH 2 OH and —C 3 H 6 —OCH{CH(OH)CH 2 OH} 2 ;
X represents any one of the functional groups represented by the aforementioned R 1 , R 2 and Q;
a=0 to 2,000; b=0 to 200; and c=0 to 50, with the proviso that in the case of b=0, at least one X is a group represented by R 2 , and in the case of c=0, at least one X is a group represented by Q; and
wherein the modification index of the organopolysiloxane ranges from 5 to 30% by mol.
2. The co-modified organopolysiloxane according to claim 1 , wherein in said general formula (3), R 1 is a methyl group; R 2 is a substituted or non-substituted, and linear or branched alkyl group having 10 to 20 carbon atoms; a+b+c satisfies a number ranging from 0 to 1,000, and a=0 to 1,000; b=0 to 200; and c=0 to 50, with the proviso that in the case of b=0, at least one X is a group represented by R 2 , and in the case of c=0, at least one X is a group represented by Q.
3. A surfactant comprising the co-modified organopolysiloxane according to claim 1 .
4. An emulsion composition comprising:
(A) the co-modified organopolysiloxane according to claim 1 ;
(B) water; and
(C) at least one oil agent, wherein the oil agent is in the form of a liquid at 5 to 100° C., and is selected from the group consisting of a silicone oil, a non-polar organic compound and a low-polar organic compound.
5. A powder treatment agent comprising the co-modified organopolysiloxane according to claim 1 .
6. The powder treatment agent according to claim 5 , wherein the agent is a powder-surface treatment agent.
7. A powder surface-treated with the powder treatment agent according to claim 6 .
8. A cosmetic raw material comprising: (A) the co-modified organopolysiloxane according to claim 1 , and (D) powders.
9. The cosmetic raw material according to claim 8 , further comprising (C) at least one oil agent, wherein the oil agent is in the form of a liquid at 5 to 100° C., and is selected from the group consisting of a silicone oil, a non-polar organic compound and a low-polar organic compound.
10. A thickening agent or a gelling agent comprising the co-modified organopolysiloxane according to claim 1 .
11. A gel composition comprising: (A) the co-modified organopolysiloxane according to claim 1 ; and (C) at least one oil agent, wherein the oil agent is in the form of a liquid at 5 to 100° C., and is selected from the group consisting of a silicone oil, a non-polar organic compound and a low-polar organic compound.
12. A preparation for external use comprising the co-modified organopolysiloxane according to claim 1 .
13. A preparation for external use comprising the emulsion composition according to claim 4 .
14. A cosmetic comprising the powder according to claim 7 .
15. A cosmetic comprising the cosmetic raw material according to claim 8 .
16. A preparation for external use comprising the gel composition according to claim 11 .
17. The preparation for external use according to claim 12 , wherein the preparation is a cosmetic.