Patent ID: 6174953
Filing Date: 2001-01-16
Classification: C08F,C09D,G05B,G06T,Y02P

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