High nitrile copolymer latex coating
AssigneeThe Standard Oil Company
InventorsRichard C. Adams, Steven J. Waisala
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Abstract
It has been discovered that nitrile barrier resin latexes containing a polyvinyl pyrrolidone compound are especially effective for coating various substrates.
Claims14
A coating composition comprising (1) a water soluble polymeric thickener comprising a homopolymer or copolymer of vinyl pyrrolidone which has an intrinsic viscosity greater than 0.75 dl/gm, and (2) a latex produced by polymerization in aqueous medium of a major portion of a monounsaturated nitrile having the structure ##STR11## wherein R is hydrogen, .alpha. lower alkyl group having from 1 to 4 carbon atoms or a halogen, and a minor portion of at least one monovinyl monomer copolymerizable therewith optionally in the presence of a preformed diene rubber.
A process for preparing a coating composition comprising blending (1) a latex produced by the polymerization in aqueous medium of a major portion of a monounsaturated nitrile having the structure ##STR17## wherein R is hydrogen, .alpha. lower alkyl group having from 1 to 4 carbon atoms or a halogen and a minor portion of at least one monovinyl monomer copolymerizable therewith optionally in the presence of a preformed diene rubber;
- and (2) a water soluble polymeric thickener comprising a homopolymer or copolymer of vinyl pyrrolidone which has an intrinsic viscosity greater than 0.75 dl/gm.
Dependencies are inferred from the claim text.