Adhesive blends and composite structures

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428516, 4284758, 525 74, 525 78, 525207, 525221, C08L 5106, C08L 2310, C08L 2306, B32B 2728

Patent

active

047741449

ABSTRACT:
Adhesive blends especially suitable for adhesion to polypropylene and gas barrier materials are disclosed, as are composite structures incorporating such blends, and methods of making such composite structures. The blends are preferably elastomer free, and comprise a mixture of an adhesion-promoting amount of high molecular weight low density polyethylene having a narrow molecular weight distribution, about 0.1 to 30 wt. % of a non-elastomeric copolymer of propylene and a polymerizable, ethylenically unsaturated carboxylic acid or derivative, and the balance a non-elastomeric ethylene/propylene copolymer wherein ethylene comprises at least 5 wt. % of the copolymer.

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