Patent ID: 7998465
Filing Date: 2011-08-16
Classification: A61K,A61Q

Abstract:
1. A cosmetic composition in the form of a mascara comprising at least one heat-expandable compound in the form of heat-expandable particles, wherein said heat-expandable particles are thermoplastic, non-expanded and have a mass per unit volume ranging from 500 kg/m 3 to 5000 kg/m 3 ; wherein said heat-expandable particles are hollow particles comprising a continuous envelope and at least one cavity, wherein said envelope comprises at least one polymer chosen from vinylidene chloride/acrylonitrile/methyl methacrylate copolymers, acrylonitrile/methyl methacrylate copolymers and acrylonitrile homopolymer, and wherein said at least one cavity comprises gas capable of exhibiting, in response to heating to a temperature ranging from 45° C. to 200° C., an increase by at least a factor of 30 of its volume relative to its volume at room temperature, wherein said gas is chosen from air, nitrogen and gaseous hydrocarbons, and mixtures thereof.