Copolymer and oily gelling agent

Patent metadata

Field	Value
Publication number	US-10758471-B2
Application number	US-201515536027-A
Country	US
Kind code	B2
Filing date	Oct 27, 2015
Priority date	Dec 19, 2014
Publication date	Sep 1, 2020
Grant date	Sep 1, 2020

Abstract

Copolymers derived from hydrophobic monomers of formula (1), and hydrophilic monomers of formulas (2) and (3), are provided

The copolymers are useful as gelling agents for oils used in cosmetics and cosmetic emulsions.

First claim

What is claimed is:

1. A copolymer derived from a mixture consisting of a hydrophobic monomer unit having a general formula (1)

wherein, R 1 is at least one alkyl group selected from the group consisting of straight chained and branched alkyl group, having 16 to 22 carbon atoms; and R 2 is selected from the group consisting of a hydrogen atom and a methyl;
and a hydrophilic monomer unit having a general formula (2)

wherein R 3 is selected from the group consisting of glyceryl group, and polypropylene glycol group illustrated as —(C 3 H 6 O) n H, wherein n is an integer of 2 to 10, R 4 is hydrogen or methyl;
and wherein the mole ratio of hydrophobic monomer (1) to hydrophilic monomer (2) ranges from 4:6 to 7:3.

2. The copolymer according to claim 1 , wherein: said hydrophobic monomer having the general formula (1) is selected from the group consisting of cetyl (meth)acrylate, stearyl (meth)acrylate, and behenyl (meth)acrylate.

3. The copolymer according to claim 1 , wherein: said hydrophilic monomer having the general formula (2) is selected from the group consisting of glyceryl methacrylate and PPG-6 acrylate.

4. The copolymer according to claim 1 , wherein: said hydrophilic monomer having the general formula (2) is glyceryl methacrylate.

5. An oily gelling agent, comprising the copolymer according to claim 1 .

6. An oily gelled composition comprising the oily gelling agent according to claim 5 .

7. An oily cosmetic comprising the oily gelled composition according to claim 6 .

8. A water-in-oil cosmetic comprising the oily gelled composition according to claim 6 .

Assignees

• Shiseido Co Ltd
• Goo Chemical Co Ltd

Inventors

• Uyama Makoto
• Miyazawa Kazuyuki
• Watanabe Takumi
• Abe Mineo
• Matsumura Masato

Classifications

• A61K8/8164 Primary

  Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a carboxyl radical, and containing at least one other carboxyl radical in the molecule, or of salts, anhydrides, esters, amides, imides or nitriles thereof; Compositions of derivatives of such polymers, e.g. poly (methyl vinyl ether-co-maleic anhydride) · CPC title

• C08F220/1812 Primary

  C12-(meth)acrylate, e.g. lauryl (meth)acrylate · CPC title

• C08F220/1818

  C13or longer chain (meth)acrylate, e.g. stearyl (meth)acrylate · CPC title

• A61Q5/00

  Preparations for care of the hair · CPC title

• A61K2800/10

  General cosmetic use · CPC title