Cosmetic composition or external composition, and cosmetic raw material composition

Patent metadata

Field	Value
Publication number	US-10874604-B2
Application number	US-201716339292-A
Country	US
Kind code	B2
Filing date	Oct 3, 2017
Priority date	Oct 4, 2016
Publication date	Dec 29, 2020
Grant date	Dec 29, 2020

Abstract

A cosmetic composition and a topical composition containing a resin-linear organopolysiloxane block copolymer are provided, which are excellent in compatibility with other cosmetic raw materials, so as to have a high degree of freedom in formulation design, excellent film forming properties and film following properties, and suppressed tackiness of the film. The resin-linear organopolysiloxane block copolymer contains a resin-linear organopolysiloxane block copolymer (A) having a structure in which a resin structure (A1) block having a siloxane unit represented by R1SiO3/2 (where R1 is a monovalent organic group, a hydroxyl group, or an alkoxy group having 1 to 6 carbon atoms) or by SiO4/2 and a linear structure (A2) block represented by (R2SiO2/2)n (where n is a number of 5 or more, R is an alkyl group, a fluoroalkyl group, or an aryl group) are connected by a Si—O—Si bond and has an R1SiO3/2 unit.

First claim

The invention claimed is:

1. A cosmetic composition or a preparation for external use, comprising:
a resin-linear organopolysiloxane block copolymer (A) having a structure in which a resin structure (A1) block having a siloxane unit represented by R 1 SiO 3/2 or by SiO 4/2 where R 1 is a monovalent organic group, a hydroxyl group or an alkoxy group having 1 to 6 carbon atoms and a linear structure (A2) block represented by (R 2 SiO 2/2 ) n where n is a number of 5 or more, and R is an alkyl group, a fluoroalkyl group, or an aryl group are connected by a Si—O—Si bond, wherein one of the Si atoms of the Si—O—Si bond is present in an RSiO 3/2 unit.

2. The cosmetic composition or the preparation for external use according to claim 1 , wherein the resin-linear organopolysiloxane block copolymer (A) contains PhSiO 3/2 units where Ph is a phenyl group or R 2 SiO 3/2 units where R 2 is an alkyl group having 3 to 20 carbon atoms.

3. The cosmetic composition or the preparation for external use according to claim 1 , wherein the resin-linear organopolysiloxane block copolymer (A) contains R 4 R 5 R 6 SiO 1/2 units where R 4 to R 6 are each independently monovalent organic groups and at least two of them are aryl groups.

4. The cosmetic composition or the preparation for external use according to claim 1 , wherein the resin-linear organopolysiloxane block copolymer (A) has a hydroxyl group (OH) content in the molecule of 1.50 mass % or more.

5. The cosmetic composition or the preparation for external use according to claim 1 , wherein the resin-linear organopolysiloxane block copolymer (A) has SiO 4/2 units and 15 mol % or more of all SiO 4/2 units have hydroxyl groups on Si atoms.

6. The cosmetic composition or the preparation for external use according to claim 1 , further comprising a solvent (B) of the resin-linear organopolysiloxane block copolymer (A).

7. The cosmetic composition or the preparation for external use according to claim 6 , wherein the resin-linear organopolysiloxane block copolymer (A) and the solvent (B) thereof have solubility in methyl cinnamate ester.

8. The cosmetic composition or the preparation for external use according to claim 6 , wherein the solvent (B) is a volatile solvent (B1).

9. The cosmetic composition or the preparation for external use according to claim 1 , further comprising an oleophilic cosmetic raw material (C).

10. The cosmetic composition or the preparation for external use according to claim 1 , further comprising a surfactant (D).

11. The cosmetic composition or the preparation for external use according to claim 1 , further comprising a powder or colorant (E).

12. The cosmetic composition or the preparation for external use according to claim 1 , further comprising an alcohol (F).

13. The cosmetic composition or the preparation for external use according to claim 1 , which is in a form of an oil-in-water emulsion or a water-in-oil emulsion.

14. A cosmetic raw material composition comprising:
a resin-linear organopolysiloxane block copolymer (A) having a structure in which a resin structure (A1) block having a siloxane unit represented by R 1 SiO 3/2 or by SiO 4/2 where R 1 is a monovalent organic group, a hydroxyl group or an alkoxy group having 1 to 6 carbon atoms and a linear structure (A2) block represented by (R 2 SiO 2/2 ) n where n is a number of 5 or more are connected by a Si—O—Si bond, wherein one of the Si atoms of the Si—O—Si bond is present in an RSiO 3/2 unit; and
a volatile solvent (B 1).

Assignees

• Dow Toray Co Ltd
• Dow Silicones Corp

Inventors

• Furukawa Haruhiko
• Horstman John Bernard
• Iimura Tomohiro
• Okawa Tadashi
• Swier Steven

Classifications

• C08G77/42

  Block-or graft-polymers containing polysiloxane sequences (polymerising aliphatic unsaturated monomers on to a polysiloxane C08F283/12) · CPC title

• A61Q19/00

  Preparations for care of the skin · CPC title

• A61K2800/10

  General cosmetic use · CPC title

• A61K8/894

  modified by a polyoxyalkylene group, e.g. cetyl dimethicone copolyol · CPC title

• A61K8/891 Primary

  saturated, e.g. dimethicone, phenyl trimethicone, C24-C28 methicone or stearyl dimethicone · CPC title