Powder treated with a power treating agent comprising an organopolysiloxane and cosmetic comprising the powder

Abstract

Powder treated with a powder treating agent comprising organohydrogenpolysiloxane, characterized in that the organohydrogenpolysiloxane has a weight average molecular weight of from 300 to 100,000, at least one SiH bond per molecule, and at least one selected from (R23SiO1/2) unit and (SiO2) unit, wherein R1 is selected from the group consisting of a hydrogen atom, and alkyl, fluorinated alkyl, aryl and aralkyl groups each having 1 to 30 carbon atoms.

Description

Claims

1. Powder treated with a powder treating agent comprising organohydrogenpolysiloxane, characterized in that the organohydrogenpolysiloxane has a weight average molecular weight of from 300 to 100,000, at least one SiH bond per molecule, and at least one selected from (R1SiO3/2) unit and (SiO2 ) unit, wherein R1 is selected from the group consisting of a hydrogen atom, and alkyl, fluorinated alkyl, aryl and aralkyl groups each having 1 to 30 carbon atoms.

2. The powder according to claim 1, wherein the organohydrogenpolysiloxane is represented by the following formula (1): (R23SiO1/2)a(R22SiO)b(R1SiO3/2)c(SiO2)d   (1)wherein R2 may be the same with or different from each other and is selected from the group consisting of alkyl, fluorinated alkyl, aryl and aralkyl groups each having I to 30 carbon atoms, a is the number of from 2 to 50, b is the number of from 0 to 1000, c is the number of from 0 to 30, and d is the number of from 0 to 30 with c +d being I or larger.

3. The powder according to claim 1, wherein the organohydrogenpolysiloxane has a weight average molecular weight of from 500 to 10,000.

4. The powder according to claim 1, wherein the powder is selected from the group consisting of zinc oxide, titanium oxide, mica, sericite, talc, and kaolin.

5. A cosmetic comprising the powder according to claim 1.

6. The cosmetic according to claim 5, wherein the cosmetic further comprises an unctuous agent (B).

7. The cosmetic according to claim 6, wherein at least a part of the unctuous agent (B) is liquid at room temperature.

8. The cosmetic according to claim 6, wherein at least a part of the unctuous agent (B) is a linear or cyclic silicone oil represented by the following formula: R3kSiO(4-k)/2 wherein R3 is selected from the group consisting of a hydrogen atom, and alkyl, aryl, aralkyl, and fluorinated alkyl groups each having 1 to 30 carbon atoms and k is the number of from 0 to 2.5.

9. The cosmetic according to claim 6, wherein at least a part of the unctuous agent (B) has a fluorine-containing group or an amino group.

10. The cosmetic according to claim 5, wherein the cosmetic further comprises water (C).

11. The cosmetic according to claim 5, wherein the cosmetic further comprises a compound (D) having an alcoholic hydroxyl group.

12. The cosmetic according to claim 11, wherein the compound (D) is at least one selected from the group consisting of water-soluble monohydric alcohols and water-soluble polyhydric alcohols.

13. The cosmetic according to claim 5, wherein the cosmetic further comprises a water-soluble or water-swelling polymer (E).

14. The cosmetic according to claim 5, wherein, the cosmetic further comprises powder (F) other than the powder according to claim 1.

15. The cosmetic according to claim 14, wherein at least a part of the powder (F) is crosslinked dimethyl silicone powder, polymethylsilsesquioxane powder, hydrophobicized silica powder, or spherical silicone rubber powder whose surface is coated with polymethylsilsesquioxane particles.

16. The cosmetic according to claim 14, wherein at least a part of the powder (F) has a fluorine-containing group.

17. The cosmetic according to claim 5, wherein the cosmetic further comprises a surfactant (G).

18. The cosmetic according to claim 17, wherein the surfactant (G) is a linear or branched silicone having a polyoxyalkylene chain moiety.

19. The cosmetic according to claim 17, wherein the surfactant (G) has an HLB of from 2 to 8.

20. The cosmetic according to claim 5, wherein the cosmetic further comprises a crosslinked organopolysiloxane (H) other than the crosslinked dimethyl silicone powder according to claim 15.

21. The cosmetic according to claim 20, wherein the crosslinked organopolysiloxane (H) is a crosslinked organopolysiloxane which swells by absorbing silicone having a viscosity of from 0.65 mm2/sec to 10.0 mm2/sec at 25° C. in an amount larger than or equal to a weight of the crosslinked polyorganosilixane itself.

22. The cosmetic according to claim 20, wherein the crosslinked polyorganosiloxane (H) has a crosslinkage which has alkylene groups having 2 to 5 carbon atoms at both ends.

23. The cosmetic according to claims 20, wherein the crosslinkage of the crosslinked organopolysiloxane (H) has at least one moiety selected from the group consisting of a polyoxyalkylene group, polyglycerin residue, alkyl group, alkylene group, aryl group, arylene group and fluoroalkyl group.

24. The cosmetic according to claim 5, wherein the cosmetic further comprises at least one silicone resin (I) selected from the group consisting of acrylic silicone resins and silicones having a network structure expressed as MQ, MDQ, MT, MDT, or MDTQ.

25. The cosmetic according to claim 24, wherein the silicone resin (I) has at least a moiety selected from the group consisting of pyrrolidone residue, long-chain alkyl group, polyoxyalkylene group, fluoroalkyl group, amino group and carboxyl group.

26. The cosmetic according to claim 5, wherein the cosmetic is a skin care cosmetic, a makeup cosmetic, a hair-care cosmetic, an antiperspirant cosmetic, or a UV ray protective cosmetic.

27. The cosmetic according to claim 5, wherein the cosmetic is in the form of liquid, emulsion, cream, solid, paste, gel, powder, pressed powder, mousse, spray, stick, or pencil.