Patent ID: 6495618
Filing Date: 2002-12-17
Classification: B01F,C08F,C08L,C09B,C09D,Y02P

Abstract:
A composition suitable for use as a pigment dispersant in organic medium, comprising a graft copolymer having a macromonomer grated onto a polymer backbone, wherein the graft copolymer has attached to the backbone an amide functional group as a pigment anchoring group, wherein the pigment anchoring group is formed from ethylenically unsaturated monomers that are copolymerized into the backbone, which monomers are selected from the group consisting ofi)acrylamide and methacrylamide monomers containing an acyclic amide group, ii) acrylic and methacrylic monomers containing a cyclic amide group, iii) acrylamide and methacrylamide monomers containing a cyclic amide group, iv) N-vinyl monomers containing a cyclic amide group, and v) any mixtures of said monomers, and further wherein the macromonomer consists essentially of macromonomers that are soluble in organic medium.