Patent ID: 6521715
Filing Date: 2003-02-18
Classification: C08F,C09B,C09D

Abstract:
A composition suitable for use as a pigment dispersant, comprising a graft copolymer having functional acetoacetate groups on polymeric backbone and/or macromonomer side chains grafted to the backbone, wherein(1) the polymeric backbone consists essentially of polymerized ethylenically unsaturated monomers and (2) the side chains are macromonomers that are grafted to the backbone at a single terminal point and consist essentially of polymerized ethylenically unsaturated monomers; wherein the graft copolymer has attached to either the backbone, the side chains or both, an acetoacetyl amine pigment anchoring group produced by reacting functional acetoacetate groups in the backbone, the side chains or both with a primary amine.