Patent ID: 9456965
Filing Date: 2016-10-04
CPC Classification: A61K,A61Q

Claim Text:
1. An oil-in-water emulsified skin cosmetic comprising the following ingredients (A) through (G): (A) acetylated hyaluronic acid represented by the following structural formula (I) wherein R denotes H or COCH 3 , and n is a real number representing the degree of polymerization; (B) a polymethacryloyloxyethyl phosphorylcholine derivative having the following structural formula (II) wherein x and y are real numbers representing the degrees of polymerization of the corresponding structural units, and x/y=2/8 to 8/2; (C) one, two or more types of non-emulsifying cross-linked silicone; (D) glycerin; (E) polyvinyl alcohol; (F) acrylamide-type thickener; and (G) oil component in a total amount of 25 wt % or more relative to the total amount of the oil-in-water emulsified skin cosmetic; wherein: in the ingredient (A), acetylated hyaluronic acid, on average 2.6-3.8 of the four R groups are acetyl groups, and the limiting viscosity of the acetylated hyaluronic acid is 50-200 cm the ingredient (C), one, two or more types of non-emulsifying cross-linked silicone, contains dimethicone crosspolymer or (dimethicone/vinyl dimethicone) crosspolymer or both; the ingredient (F), acrylamide-type thickener, is vinylpyrrolidone/2-acrylamide-2-methylpropane sulfonic acid copolymer and/or sodium N,N′-dimethylacrylamide-2-acrylamide-2-methylpropane sulfonate/N,N′-methylenebisacrylamide copolymer; and the ingredient (G), oil component, contains trioctanoin.