# US 8,541,009 B2 · Cosmetic

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- Number: US 8,541,009 B2
- Document ID: US8541009B2
- Status: Granted
- Kind: B2
- Application number: 12/997,443
- Filed: 2009-06-11
- Published: 2011-05-05
- Granted: 2013-09-24
- Earliest claimed: 2008-06-11
- Assignees: Kao Corporation
- Applicants: Masayuki Iida; Takamasa Yamamoto; Yuko Yago
- Inventors: Masayuki Iida; Takamasa Yamamoto; Yuko Yago
- Web page: https://patentgrep.com/patent/US8541009B2

## CPC

- A61K 8/375: {the alcohol moiety containing more than one hydroxy group}
- A61K 8/556: {Derivatives containing from 2 to 10 oxyalkylene groups}
- A61K 8/678: {Tocopherol, i.e. vitamin E}
- A61K 8/891: saturated, e.g. dimethicone, phenyl trimethicone, C24-C28 methicone or stearyl dimethicone
- A61K 8/895: containing silicon bound to unsaturated aliphatic groups, e.g. vinyl dimethicone
- A61Q 1/02: Preparations containing skin colorants, e.g. pigments (preparations in powder form A61Q1/12)
- A61Q 1/10: for eyes, e.g. eyeliner, mascara
- A61Q 17/04: Topical preparations for affording protection against sunlight or other radiation; Topical sun tanning preparations
- A61K: PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES (devices or methods specially adapted for bringing pharmaceutical products into particular physical or administering forms A61J3/00; chemical aspects of, or use of materials for deodorisation of air, for disinfection or sterilisation, or for bandages, dressings, absorbent pads or surgical articles A61L; soap compositions C11D)
- A61Q: SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS

## Abstract

A cosmetic composition contains the following components (A), (B) and (C): (A) from 0.1 to 30 wt. % of a vinyl-based polymer having a carbosiloxane dendrimer structure in a side chain thereof, (B) from 0.1 to 30 wt. % of a nonvolatile cosmetic oil, which is in a liquid form at 25° C. and has a solubility parameter of 16.5 or greater, and (C) from 0.1 to 30 wt. % of a hydrophobic powder, and a weight ratio of the component (A) to the component (B), (A)/(B), is from 0.3 to 5.

## Claims

### Claim 1

A cosmetic composition comprising the following components (A), (B) and (C):
(A) from 0.1 to 20 wt. % of a (meth)acrylate-based polymer having a carbosiloxane dendrimer structure in a side chain thereof, wherein the carbosiloxane dendrimer structure is a group represented by the following formula (1):
wherein Z is a divalent organic group, p is 1, R1 is a methyl group, and X1 is a silylalkyl group which, when i=1, is represented by the following formula (3):
wherein R1 is the same as defined above, R2 is an ethylene group, a methylethylene group, a hexylene group, a 1-methylpentylene group or a 1,4-dimethylbutylene group, R3 is an alkyl group having from 1 to 10 carbon atoms, and Xi+1 is a hydrogen atom or a methyl group, i is an integer of from 1 to 10 which represents the generation of the silylalkyl group, ai is 0, the divalent organic group as Z is the organic group represented by the following formula (2):
wherein R9 is an ethylene group or a propylene group,
(B) from 0.1 to 20 wt. % of a nonvolatile cosmetic oil, which is in a liquid form at 25° C. and has a solubility parameter of 16.5 to 23, and a molecular weight ranging from 250 to 2,000, and
(C) from 1 to 25 wt. % of a hydrophobic powder,
wherein a weight ratio of the component (A) to the component (B), (A)/(B), is from 0.3 to 5.

### Claim 2 (depends on 1)

The cosmetic composition according to claim 1, wherein a part or an entire part of the hydrophobic powder as the component (C) is a hydrophobic powder with iron oxide contained therein.

### Claim 3 (depends on 1)

The cosmetic composition according to claim 1, further comprising:
(D) from 0.1 to 6 wt. % of a polyether-modified silicone.

### Claim 4 (depends on 3)

The cosmetic composition according to claim 3, wherein a weight ratio of the component (A) to the component (D), (A)/(D), is from 1.2 to 30.

### Claim 5 (depends on 3, 4)

The cosmetic composition according to claim 3 or 4, wherein the polyether-modified silicone as the component (D) is one having an HLB of from 1 to 6.

### Claim 6 (depends on 1)

The cosmetic composition according to claim 1, further comprising:
(E) flaky powder of zinc oxide having an average particle size of from 0.1 to 6 μm, an average particle thickness of from 0.01 to 0.3 μm, and an average plate ratio of 3 or greater.

### Claim 7 (depends on 6)

The cosmetic composition according to claim 6, wherein a weight ratio of the component (A) to the component (E), (A)/(E), is from 0.05 to 20.

### Claim 8 (depends on 1)

The cosmetic composition according to claim 1, further comprising:
(F) a poly(N-acylalkyleneimine)-modified silicone and/or a sugar-modified silicone.

### Claim 9 (depends on 1)

The cosmetic composition according to claim 1, wherein the (meth)acrylate-based polymer having a carbosiloxane dendrimer structure has the following formula: