(MET) COPOLYMER EMULSIONS OF LOW MOLECULAR WEIGHT ACRYLATE.

摘要

An aqueous copolymer comprising: (a) from 20 to 98% by weight of a water soluble macromonomer with a hydroxyl value of more than 300, an average molecular weight below 6000, containing less than 10% by weight of an acid functionalized monomer and having an unsaturated terminal double bond; and (b) from 2 to 80% by weight of polymerized monomers selected from vinyl monomers, acrylate monomers, methacrylate monomers and mixtures thereof; where said copolymer is selected from graft copolymers and block copolymers and has an average molecular weight below 20,000, a hydroxyl value greater than 200 and an acid value below 50.