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US 6,713,548 B1Granted
Waterborne polymer compositions
AssigneeMeadWestvaco Corporation
InventorsSukun Zhang, Charles Andrew Rumble, Warunee Srisiri-Sisson, Marc Stephen Moisa, James George Hayden
Life of this patent
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Abstract
This invention relates to waterborne polymer compositions and their applications. More particularly, the invention relates to the utilization of water-dispersible polymers and fatty acid as surface-active agents in emulsion polymerization reactions to produce waterborne polymer compositions which exhibit superior grease, water, and chemical resistance properties.
Claims18
An aqueous polymer composition reaction product produced by reacting in an emulsion polymerization reaction a mixture comprising:
- (a) about 5.0% to about 60.0% by total weight of the mixture of a member selected from the group consisting of water-dispersible polymers having an average molecular weight in the range of about 2,000 to about 12,000 and combinations thereof;
- (b) about 2.0% to about 30.0% by total weight of the mixture of a member selected from the group consisting of fatty acids having an acid number of at least 100 and combinations thereof;
- (c) about 20.0% to about 93.0% by total weight of the mixture of a member selected from the group consisting of vinylic monomers and combinations thereof;
- (d) up to about 3.0% by total weight of the mixture of a chain transfer agent;
- (e) up to about 5.0% by total weight of the mixture of a surfactant selected from the group consisting of nonionic surfactants, anionic surfactants, and combinations thereof;
- (f) a catalytic amount of at least one polymerization initiator;
- and
- (g) the balance of the mixture being water;
- to produce the polymer composition.
6 more elements
Dependencies are inferred from the claim text.