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US 6,437,033 B1Granted
Rosin-fatty acid vinylic polymers
AssigneeWestvaco Corporation
InventorsRajnikant Shah, Stanley C. Adams
Life of this patent
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Abstract
Vinylic polymer compositions having a weight average molecular weight in the range of about 4,000 to about 12,000 are produced by reacting, in an addition polymerization reaction, a fatty acid rosin mixture and a monomer mixture at a temperature in the range of about 135° C. to about 175° C. These compositions exhibit properties that make them useful as support resins for ink and overprint formulations and as additives for formulating various coating compositions.
Claims14
A method for producing rosin-fatty acid vinylic polymer compositions which comprises reacting in an addition polymerization reaction:
- (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 mixture of fatty acid, and
- (2) about 10.0% to about 90.0% by total weight of the 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 mixture of a member selected from the group consisting of acrylic acid, methacrylic acid, fumaric acid, maleic anhydride, and combinations thereof,
- (2) about 55.0% to about 85.0% by total weight of the 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 mixture of a polymerization initiator,
- (4) up to about 4.0% by total weight of the mixture of a chain transfer agent, and
- (5) up to about 30% by total weight of the mixture of a hydrocarbon solvent,
- at a temperature in the range of about 135° C. to about 175° C. to produce a rosin-fatty acid vinylic polymer composition having a weight average molecular weight in the range of about 4,000 to about 12,000.
8 more elements
Dependencies are inferred from the claim text.