Patent ID: 6387167
Filing Date: 2002-05-14
Classification: C08F,C09B,C09D

Abstract:
An ink composition, said ink composition comprising a polymeric dispersant, said dispersant is a polymerization reaction product of a mixture of monomers consisting essentially of:(a) from about 10% to about 40% by weight styrene; and (b) from about 10% to about 55% by weight of at least one alkyl methacrylate monomer having 1 to 8 carbon atoms in the alkyl group; and (c) from about 10% to about 55% by weight of at least one alkyl methacrylate monomer having greater than 8 carbon atoms in the alkyl group; and (d) from about 5% to about 25% by weight of at least one alkyl acrylate monomer having from 1 to 18 carbon atoms in the alkyl group; and (e) from about 7% to about 25% by weight of at least one hydroxy-functional ethylenically unsaturated monomer having a molecular weight of less than 2000; and (f) from about 0.1% to about 15% of a compound providing an amine functional moiety, said compound being an acrylate or methacrylate compound containing amino groups, copolymerizable with (a), (b), (c), (d), and (e); wherein the dispersant is substantially free of acid functionality.