Patent ID: 9006329
Filing Date: 2015-04-14
Classification: C08F,C08L,C09J

Abstract:
1. An aqueous dispersion of a vinyl ester/ethylene copolymer prepared by emulsion copolymerization of a monomer mixture comprising a vinyl ester and ethylene, less than 0.5 ppmw of a surfactant, and a polyvinyl alcohol stabilizing system consisting essentially of (a) about 0.5 to about 3 wt. % based on the total monomer weight of a first polyvinyl alcohol having a degree of hydrolysis of at least 98 mole %, and (b) about 1 to about 4 wt. % based on the total monomer weight of a second polyvinyl alcohol having a degree of hydrolysis of about 85 to about 90 mole % and a weight average molecular weight of at least 85,000 g/mol.