Patent ID: 6326449
Filing Date: 2001-12-04
Classification: C08F,C09B,C09D

Abstract:
A polymeric dispersant for non-aqueous systems, the dispersant being especially adapted for dispersing pigments therein and being compatible with a variety of film-forming resins and low polar solvents, 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; 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.