Patent ID: 7655702
Filing Date: 2010-02-02
Classification: A61K,A61Q,C08G

Abstract:
1. A method of lowering the surface tension or the interface tension of water of a cosmetic composition comprising at least one cosmetic or dermatological adjuvant, the method comprising adding a polymer comprising water-soluble units and units with an LCST, the units with an LCST having in water a demixing temperature of from 5 to 40° C. at a concentration of 1% by mass in water and wherein the water-soluble units are different than the units with an LCST, to water in an amount sufficient to lower the surface tension or the interface tension of water, wherein the polymer comprises an oligomer or copolymer of water-soluble units, wherein the polymer is water-soluble in the entire range of 5 to 80° C. at a concentration of at least 10 g/l wherein the units with an LCST are-one or more of the following polymers: polyethers; polyvinyl methyl ethers; polymeric N-substituted acrylamide derivatives; copolymers of N-isopropylacrylamide or of N-ethylacrylamide and a vinyl monomer corresponding to formula (I): wherein: R is from H, —CH X is: copolymers of N-isopropylacrylamide or of N-ethylacrylamide and a monomer selected from the group consisting of maleic anhydride, itaconic acid, vinylpyrrolidone, styrene and its derivatives, dimethyldiallylammonium chloride, vinylacetamide, vinyl ethers and vinyl acetate derivatives; or