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US 4,204,022 AGranted
Adhesives coatings and laminates utilizing ethylene copolymers and coal-tar pitch
AssigneeUnited States Steel Corporation
InventorsGeorge F. Snyder, Robert M. Stewart
Life of this patent
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Abstract
Thermoplastic compositions of matter comprising coal-tar pitch and a material selected from (1) a terpolymer of ethylene, vinyl acetate, and an ethylenically-unsaturated carboxylic acid and (2) a mixture of copolymers of ethylene and vinyl acetate and of ethylene and an ethylenically-unsaturated carboxylic acid, exhibiting high strength in shear and peel over a wide temperature range, are prepared and used as adhesives and coatings. Laminated materials utilizing such compositions of matter are also disclosed.
Claims5
A laminate comprising
- A. a metallic skin layer
- B. a middle visco-elastic layer at least 0.008 inch thick of a composition comprising
- (a) from about 10 to about 75 weight percent coal tar pitch;
- (b) from about 25 to about 90 weight percent of a polymeric ethylene composition selected from
- 1. a terpolymer of ethylene, vinyl acetate, and an ethylenically unsaturated carboxylic acid containing from 3 to 8 carbon atoms, and
- 2.
3 more elements
Dependencies are inferred from the claim text.