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US 4,908,268 AGranted
Ethylene vinyl acetate-dioctyl maleate-2-ethylhexyl acrylate interpolymers
AssigneeNational Starch and Chemical Corporation
InventorPaul R. Mudge
Life of this patent
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Abstract
Adhesive compositions having a Tg of -45.degree. to -25.degree. C. suitable for application to plasticized polyvinyl chloride comprising 25 to 40% by weight of a vinyl ester of a alkanoic acid; 10-30% by weight ethylene; 20 to 30% by weight of di-2-ethylhexyl maleate or fumarate; 20 to 30% by weight of 2-ethylhexyl acrylate; and 1 to 10% by weight of a monocarboxylic acid.
Claims10
Plasticized polyvinyl chloride substrates coated with a pressure sensitive adhesive composition comprising 25-40% by weight of a vinyl ester of a alkanoic acid;
- 10 to 30% by weight ethylene;
- 20 to 30% by weight of di-2-ethylhexyl maleate or fumarate;
- 20 to 30% by weight 2-ethylhexyl acrylate and 1 to 5% by weight of a mono-carboxylic acid;
- wherein the adhesive is prepared using semi-batch emulsion polymerization techniques and wherein 50 to 75% of the maleate or fumarate monomer is charged initally with all the ethylene and vinyl ester and wherein the remaining maleate or fumarate is added incrementally over the course of the polymerization with the acrylate and monocarboxylic acid monomers.
1 more element
Dependencies are inferred from the claim text.