Patent ID: 6939931

Claim:
A process for the preparation of solid polyvinyl ester resins by bulk or solution polymerization, said process comprising: polymerizing one or more monomers selected from the group consisting of a) vinyl ester(s) of unbranched or branched alkyl carboxylic acids having 1 to 15 carbon atoms; b) non-functional unsaturated monomers; and c) functional monomers selected from the group consisting of carboxyl group-containing unsaturated monomers, hydroxyethylacrylate, and hydroxypropyl acrylate, and isolating a solid polyvinyl ester resin product, with the proviso that at least one monomer a) is polymerized, said step of polymerizing taking place in the presence of at least one chain transfer agent selected from the group consisting of monovalent C 1-6 aliphatic alcohols and esters of C 1-4 aliphatic monocarboxylic acids with C1-4 aliphatic alcohols.