Patent ID: 6528575
Filing Date: 2003-03-04
Classification: A61K,A61Q,B01F

Abstract:
A process for stabilizing an oil-in-water emulsion which process comprises adding to the emulsion from 0.01 to 5% by weight of the emulsion of a crosslinked copolymer obtained by precipitation polymerization of a monomer mixture comprising:(a) monoethylenically unsaturated C3-C8-carboxylic acids, their anhydrides or mixtures of the carboxylic acids and anhydrides, (b) compounds with at least 2 non-conjugated ethylenic double bonds in the molecule as crosslinkers and, optionally, (c) other monoethylenically unsaturated monomers which are copolymerizable with monomers (a) and (b), in the presence of free-radical polymerization initiators and from 0.1 to 20% by weight, based on the total weight of the monomers of a saturated, nonionic surface-active compound.