Soluble shell polymer composition and method for its preparation

摘要

Abstract The present invention relates to a soluble shell polymer composition comprising an alkali soluble emulsion polymer shell and an alkali insoluble emulsion polymer core, which composition is stabilized by a surfactant of the formula R-(OCH 2 CH 2 )2 .6OSOiM*, where R is a linear, 5 branched, or cyclic C8-C2 4 alkyl or C12 -Ci8 aralkyl group and M* is a counterion. The invention further relates to a method of preparing the composition and its use as a binder in coatings formulations. Formulations prepared with the soluble shell polymer composition have excellent freeze-thaw profiles and hiding.