Patent ID: 6214927
Filing Date: 2001-04-10
Classification: A61K,A61Q,C08G,Y10S

Abstract:
A method for making a substantially stable aqueous emulsion having a total solids content in a range between about 5% by weight and about 60% by weight of functionalized organopolysiloxane particles, comprising effecting reaction at a temperature in a range between about 25.degree. C. and about 110.degree. C., and in the presence of an effective amount of an acid catalyst surfactant, between (A) an aqueous emulsion of organopolysiloxane particles consisting essentially of chemically combined diorganosiloxy units and having a volume average particle diameter of at least about 300 nanometers, and (B) an organosilicon polar functionalizing source material comprising a mercaptoorgano group, an epoxy organo group, a carboxy group, or mixtures thereof, wherein there is utilized in the resulting reaction mixture in a range between about 0.1 part and about 20 parts by weight of (B) per 100 parts of (A); andwherein said volume average particle diameter is substantially maintained upon functionalization.