| 摘要 |
PROBLEM TO BE SOLVED: To provide a new microgel copolymer useful as a compounding raw material for cosmetics and provide a thickening cosmetic compounded with the copolymer, developing low stringiness characteristic to polymers and having excellent appearance. SOLUTION: The water-soluble thickener is composed of a microgel obtained by the copolymerization of hydroxyethyl acrylamide, a cationic unsaturated monomer selected from dimethylaminoalkyl (meth)acrylate, diethylaminoalkyl (meth)acrylate, dimethylaminoalkyl (meth)acrylamide and diethylaminoalkyl (meth)acrylamide (the carbon number of the alkyl group is 1-4), their acid neutralized salts and their quaternized product, and a crosslinkable monomer having two or more unsaturated groups. COPYRIGHT: (C)2007,JPO&INPIT
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