Patent ID: 8034322
Filing Date: 2011-10-11
Classification: A61K,A61Q,C08G

Abstract:
1. A process for preparing an aqueous polyurethane dispersion suitable for use in personal care products, comprising: 1) preparing a prepolymer according to the formula: by reacting: 2) reacting the prepolymer with at least one monohydroxyl-functional polyalkylene oxide with a number average molecular weight equal to or less than about 3,000; 3) chain-extending the prepolymer with  in the presence of an organic solvent to form a polyurethane; 4) dispersing the polyurethane in water; and 5) removing the organic solvent, resulting in an aqueous polyurethane dispersion; wherein the radical of the monohydroxyl-functional polyalkylene oxide constitutes between about 0.1 wt. % to about 5 wt. % of the polyurethane.