| 摘要 |
PURPOSE: Provided are polymeric pigment dispersants, more particularly, graft copolymer pigment dispersants having an acetoacetyl amine pigment anchoring group. The dispersants are easy to prepare and are useful in dispersing a wide variety of pigments. CONSTITUTION: The composition suitable for use as a pigment dispersant, comprises a graft copolymer having a polymeric backbone and macromonomer side chains attached to the backbone, wherein (1) the polymeric backbone consists essentially of polymerized ethylenically unsaturated monomers and (2) the side chains are macromonomers that are attached 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.
|
