Composite structures and method of making same

Details Composite structures and method of making same Composite structures and method of making same

B - Operations, Transporting

29

C

154/106, 18/783

B29C 47/06 (2006.01) B32B 27/32 (2006.01) C09J 121/00 (2006.01) C09J 123/00 (2006.01) C09J 151/06 (2006.01) C09J 153/02 (2006.01)

Patent

CA 1206312

COMPOSITE STRUCTURES AND METHOD OF MAKING SAME ABSTRACT Disclosed is a method of making a composite structure comprising polypropylene, a polar substrate and an adhesive blend in intimate contact therebetween comprising applying in contact with the polypropylene and the substrate an adhes- ive blend free of polypropylene, the blend consisting essential- ly of (a) a graft copolymer of about 70-99.999 wt. % of a poly- ethylene backbone grafted with about 30-0.001 wt. % of at least one compound containing at least one unsaturated carboxylic acid or acid anhydride or both blended with both, (b) at least 30 wt. % of the blend of at least one elastomer selected from the group consisting of copolymers of ethylene and an .alpha.-olefin, terpolymers of ethylene, an .alpha.-olefin and a diene, homopolymers of chloroprene, copolymers of isobutylene, homopolymers of isobutylene, copolymers of a diene and a vinyl aromatic compound, copolymers of a hydrogenated diene and a vinyl aromatic compound, homo- polymers of butadiene, copolymers of an ethylenically unsaturated nitrile and a diene, or a mixture of these, and (c) at least one non-elastomeric polyolefin resin that is either a homopolymer of ethylene, a copolymer of ethylene and .alpha.-olefin, or a mixture of these.

408418

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