Patent ID: 6437008
Filing Date: 2002-08-20
Classification: A61K,A61Q,C08G,C08L,Y10S

Abstract:
An aqueous emulsion of an organopolysiloxane comprising:(A) 70 to 90% by weight based on the emulsion of either component (A-1) or component (A-2), wherein (A-1) is an organopolysiloxane having a viscosity of 1Ã—105 mPaÂ·s or higher at 25Â° C. represented by the average unit formula R1aSiO(4)/2, in which R1 is an unsubstituted or substituted monovalent hydrcarbon group having from 1 to 20 carbon atoms and subscript a is a positive number from 1.8 to 2.2, and (A-2) is a mixture of (a) 10 to 90% by weight of said mixture of an organopolysiloxane having a viscosity of 1Ã—106 mPaÂ·s or higher at 25Â° C. represented by the average unit formula R1aSiO(4-a)/2, in which R1 is an unsubstituted or substituted monovalent hydrcarbon group having from 1 to 20 carbon atoms and subscript a is a positive number from 1.8 to 2.2, and (b) 90 to 10% by weight of said mixture of an organopolysiloxane having a viscosity of 10 to 1000 mm2/s at 25Â° C. represented by the average unit formula R1aSiO(4-a)/2, in which R1 is an unsubstituted or substituted monovalent hydrcarbon group having from 1 to 20 carbon atoms and subscript a is a positive number from 1.8 to 2.2 or a hydrocarbon solvent having a boiling point in the range from 60 to 260Â° C.; (B) 1 to 15% by weight based on the weight of the emulsion of a surface active agent selected from the group consisting of anionic surface active agents, nonionic surface active agents, and cationic surface active agents, wherein said cationic surface active agents are represented by the formula R24N+Xâˆ’, in which at least one of the four R2 groups is an alkyl or alkenyl group having 12 to 22 carbon atoms, the rest of the R2 groups, if any, are each an alkyl group having 1 to 5 carbon atoms or a benzyl group, and Xâˆ’ is a halogen ion or an organic anion; and (C) 5 to 25% by weight based on the weight of the emulsion of water as a solvent or dispersion medium of the components (A) and (B), wherein the average diameter of the emulsified organopolysiloxane droplets is 0.11 to 1.0 mm.