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US 4,007,311 AGranted
Polyacrylate-grafted block copolymer adhesive compositions
AssigneeShell Oil Company
InventorJames T. Harlan, Jr.
Life of this patent
Estimating the term…
Abstract
The adhesion of hydrocarbon block copolymers to polar substrates is enhanced by compositions containing either blends of polymers of acrylic acid esters with block copolymers or block copolymers modified by grafted polymerized acrylic acid esters.
Claims8
An adhesive composition comprising:
- a. 5 to 50% by weight of a graft copolymer of a block copolymer and a polymerized alkyl ester of an acid of the acrylic acid series wherein said block copolymer is selected from the group consisting of monoalkenyl arene-conjugated diene block copolymers and selectively hydrogenated monoalkenylarene-conjugated diene block copolymers;
- and
- b. 95% to 50% by weight of a polyurethane cement.
Dependencies are inferred from the claim text.