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US 4,792,444 AGranted
Cosmetic comprising fluoroalkyl (meth)acrylate copolymers
AssigneeKao Corporation
InventorsJunichi Fukasawa, Yutaka Yasuda, Yuji Sato, Jun Shida
Life of this patent
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Abstract
A cosmetic agent serves to form film being durable to various effects and comprises a copolymer of a fluoroalkyl (meth)acrylate and a long chain, linear alkyl (meth)acrylate. It may further comprise a volatile oil and solid fat(s).
Claims16
A cosmetic composition comprising
- (a) from 5 to 80 percent by weight of a cosmetically acceptable volatile oil component having a boiling point of not higher than 280? C.;
- (b) from 0.1 to 50 percent by weight, based on the weight of said volatile oil component, of at least one copolymer of (i) a first monomer selected from the group consisting of fluoroalkyl acrylates and fluoroalkyl methacrylates and (ii) a second monomer selected from the group consisting of C.sub.8 -C.sub.22 alkyl acrylates and C.sub.8 -C.sub.22 alkyl methacrylates, the weight ratio of said second monomer to said first monomer being in the range of from 10:1 to 1:5, said copolymer being dissolved in said volatile oil, and
- (c) the balance is one or more conventional ingredients for cosmetics.
A solid, skin makeup, cosmetic composition comprising
- (a) from 5 to 80 percent by weight of a volatile oil component having a boiling point of not higher than 280.degree. C.;
- (b) from 0.1 to 50 percent by weight, based on the weight of said volatile oil component, of at least one copolymer of (i) a first monomer selected from the group consisting of fluoroalkyl acrylates and fluoralkyl methacrylates and (ii) a second monomer selected from the group consisting of C.sub.8 -C.sub.22 alkyl acrylates and C.sub.8 -C.sub.22 alkyl methacrylates, the weight ratio of said second monomer to said first monomer being in the range of from 10:1 to 1:5, said copolymer being dissolved in said volatile oil, and
- (c) from 5 to 60 percent by weight of a solid fat having a penetration of 40 (determined by Japanese Industrial Standard K-25 30, 25.degree. C., 100 g, 5 sec), said copolymer being soluble or dispersible in said volatile oil and being incompatible with said solid fat, said solid fat being insoluble in said volatile oil at a temperature not higher than 40.degree. C.;
- and
- (d) the balance is one or more conventional ingredients for skin makeup cosmetics.
2 more elements
Dependencies are inferred from the claim text.