Patent ID: 7087650
Filing Date: 2006-08-08
Classification: A61K,A61Q,Y10T

Abstract:
1. A composition in the form of an oil-in-water emulsion comprising an oily phase dispersed in an aqueous phase, wherein the aqueous phase comprises a dispersion of particles of uncrosslinked silicone copolymer, and at least one amphiphilic surfactant capable of forming liquid crystals, wherein said surfactant is present in an amount sufficient to form a liquid crystalline phase within the composition at rest, within the composition upon application to a keratinous substance, or both, wherein the silicone copolymer is obtained by a chain-extension reaction in the presence of a catalyst starting from at least: (a) one polysiloxane (i) having at least one reactive group per molecule, wherein the polysiloxane (i) is selected from the group consisting of formula (I): in which R 1 and R 2 , independently of one another, represent a hydrocarbonaceous group having from 1 to 20 carbon atoms or an aryl group or a reactive group and n, in formula (I), is an integer greater than 1, provided that there are, on average, between one and two reactive groups per polymer; and (b) one organosilicone compound (ii) which reacts with the polysiloxane (i) by a chain-extension reaction, wherein the organosilicone compound (ii) is a liquid organohydropolysiloxane of formula (II): where n, in formula (II), is an integer greater than 1.