Patent ID: 6503971
Filing Date: 2003-01-07
Classification: C08L,C09D

Abstract:
A grind vehicle for ink formulations comprising a dispersion of a rosin-fatty acid vinylic polymer grinding resin composition comprising the addition polymerization reaction products of:(A) about 20.0% to about 60.0% by total weight of the reactants of a fatty acid rosin mixture comprising: (1) about 10.0% to about 90.0% by total weight of the fatty acid rosin mixture of fatty acid, and (2) about 10.0% to about 90.0% by total weight of the fatty acid rosin mixture of rosin; and (B) about 40.0% to about 80.0% by total weight of the reactants of a monomer mixture comprising: (1) about 15.0% to about 45.0% by total weight of the monomer mixture of a member selected from the group consisting of acrylic acid, methacrylic acid, and combinations thereof, (2) about 55.0% to about 85.0% by total weight of the monomer mixture of a member selected from the group consisting of non-carboxylic acid containing vinylic monomers and combinations thereof, (3) about 0.5% to about 5.0% by total weight of the monomer mixture of a polymerization initiator, (4) up to about 4.0% by total weight of the monomer mixture of a chain transfer agent, and (5) up to about 30.0% by total weight of the monomer mixture of a hydrocarbon solvent; at a temperature in the range of about 135Â° C. to about 175Â° C. to produce the rosin-fatty acid vinylic polymer grinding resin composition containing rosin-fatty acid vinylic polymer having a weight average molecular weight in the range of about 4,000 to about 12,000.