Patent ID: 6429247
Filing Date: 2002-08-06
Classification: C08F,C09D

Abstract:
A rosin-fatty acid vinylic emulsion composition comprising the reaction product produced by:(A) reacting in a polymerization reaction: (1) about 20.0% to about 60.0% by total weight of the reactants of a fatty acid rosin mixture comprising: (a) about 10.0% to about 90.0% by total weight of the fatty acid rosin mixture of fatty acid, and (b) about 10.0% to about 90.0% by total weight of the fatty acid rosin mixture of rosin; and (2) about 40.0% to about 80.0% by total weight of the reactants of a monomer mixture comprising: (a) 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, fumaric acid, maleic anhydride, and combinations thereof, (b) 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 group containing vinylic monomers and combinations thereof, (c) about 0.5% to about 5.0% by total weight of the monomer mixture of a polymerization initiator, (d) up to about 4.0% by total weight of the monomer mixture of a chain transfer agent, and (e) up to about 30% 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 a rosin-fatty acid vinylic polymer having a weight average molecular weight in the range of about 4,000 to about 12,000; and (B) further reacting in an emulsion polymerization reaction: (1) about 5.0% to about 90.0% by total weight of the reactants of the rosin-fatty acid vinylic polymer of step A, (2) about 10.0% to about 95.0% by total weight of the reactants of a member selected from the group consisting of vinylic monomers and combinations thereof, and (3) about 0.5% to about 4.0% by total weight of the reactants of a polymerization initiator, (4) up to about 4.0% by total weight of the reactants of a chain transfer agent, and (5) up to about 4.0% by total weight of the reactants of a surfactant, at a temperature in the range of about 20Â° C. to about 100Â° C. to produce a rosin-fatty acid vinylic emulsion composition with polymers having a weight average molecular weight in the range of about 40,000 to about 200,000.