Gel paste composition and cosmetic using the gel paste composition

Patent metadata

Field	Value
Publication number	US-11020327-B2
Application number	US-201615019694-A
Country	US
Kind code	B2
Filing date	Feb 9, 2016
Priority date	Mar 13, 2015
Publication date	Jun 1, 2021
Grant date	Jun 1, 2021

Abstract

A gel paste composition including (A) a crosslinking organopolysiloxane and (B) a liquid oil, the crosslinking organopolysiloxane (A) being obtained by reacting an organohydrogenpolysiloxane shown by the following general formula (I) with a polyoxyalkylene compound shown by the following general formula (II) in the presence of a catalyst for hydrosilylation reaction, the component (A) containing polyoxyethylene units in an amount of 20 wt % or more. As a result, the gel paste composition that contains a crosslinking organopolysiloxane having improved compatibility with ethylhexyl methoxycinnamate and water, and thus exhibits excellent dispersibility when blended to a cosmetic thereby providing good feeling and cosmetic sustainability.

R 1 a H b SiO (4-a-b)/2   (I)

C c H 2c-1 O(C 2 H 4 O) d (C 3 H 6 O) e C c H 2c-1   (II).

First claim

The invention claimed is:

1. A gel paste composition comprising:
(A) a crosslinking organopolysiloxane; and
(B) a liquid oil,
wherein the crosslinking organopolysiloxane (A) is obtained by reacting an organohydrogenpolysiloxane shown by the following general formula (I) with a polyoxyalkylene compound shown by the following general formula (II) and a polyoxyalkylene compound shown by the following general formula (III) in the presence of a catalyst for hydrosilylation reaction, the component (A) containing polyoxyethylene units in an amount in a range of 30 wt % to 60 wt % and at least one of absorbs and swells with each of water and ethylhexyl methoxycinnamate (OMC):
R 1 a H b SiO (4-a-b)/2   (I)

where each R 1 may be the same or different and represents a substituted or unsubstituted monovalent hydrocarbon group having 1 to 30 carbon atoms and not having an alkenyl group, and “a” and “b” each represent a positive number satisfying 1.0≤a≤2.5, 0.001≤b≤1.2, and 1.001≤a+b≤2.6,
C c H 2c-1 O(C 2 H 4 O) d (C 3 H 6 O) e C c H 2c-1   (II)

where “c” represents an integer of 2 to 6, and “d” and “e” each represent an integer satisfying 5≤d≤200 and 0≤e≤200,
C c H 2c-1 O(C 2 H 4 O) d (C 3 H 6 O) e —R 2   (III)

where R 2 represents a hydrogen atom, a monovalent hydrocarbon group having 1 to 10 carbon atoms, or —(CO)R 3 where R 3 represents an alkyl group having 1 to 5 carbon atoms.

2. The gel paste composition according to claim 1 , wherein the organohydrogenpolysiloxane used to obtain the crosslinking organopolysiloxane (A) is shown by the following general formula (V):

where “g” and “h” represent an integer satisfying 0≤g≤300 and 0≤h≤300; “x” is 0 to 2, and h+x≥2.

3. The gel paste composition according to claim 1 , wherein the liquid oil (B) is selected from a silicone oil and an ester oil.

4. The gel paste composition according to claim 2 , wherein the liquid oil (B) is selected from a silicone oil and an ester oil.

5. A cosmetic comprising a gel paste composition according to claim 1 .

6. The cosmetic according to claim 5 , further comprising an oil component (C) other than the liquid oil (B).

7. The cosmetic according to claim 5 , wherein the cosmetic is an emulsified cosmetic and contains water and a water-soluble polymer in a continuous phase.

8. The cosmetic according to claim 7 , wherein the water-soluble polymer is an alkali-thickened vinyl polymer or an acrylamidosulfonic acid polymer.

9. The cosmetic according to claim 7 , wherein the emulsified cosmetic contains a surface-hydrophobized powder in an oil phase.

10. The cosmetic according to claim 9 , wherein the surface-hydrophobized powder is a hydrophobized pigment.

Assignees

• Shinetsu Chemical Co

Inventors

• Akabane Emi
• Hayakawa Chihiro

Classifications

• A61K8/062

  Oil-in-water emulsions · CPC title

• A61K8/895

  containing silicon bound to unsaturated aliphatic groups, e.g. vinyl dimethicone · CPC title

• A61Q1/06

  Lipsticks · CPC title

• A61Q1/02

  Preparations containing skin colorants, e.g. pigments (preparations in powder form A61Q1/12) · CPC title

• C08L83/12

  containing polyether sequences · CPC title