Patent ID: 7129278
Filing Date: 2006-10-31
Classification: C08G,C08J,C09D

Abstract:
1. A process for producing a water-reducible polymer dispersion useful for aqueous coating compositions, comprising: (A) producing a modified polymer resin having an acid value less than 30, wherein said modified polymer resin is formed by (B) subjecting the modified polymer resin to temperatures higher than the melting point of the modified polymer resin to maintain the modified polymer resin in a molten and flowable state; (C) combining the molten modified polymer resin with water in the presence of a base at temperatures sufficient to maintain the modified polymer resin in a molten state; and (D) forming a dispersion of the molten modified polymer resin by subjecting the modified polymer resin to high shear dispersing; and wherein a surfactant is optionally added.