Dynamically cured thermoplastic olefin polymers

Details Dynamically cured thermoplastic olefin polymers Dynamically cured thermoplastic olefin polymers

1986-06-16

1989-07-04

Seccuro, Carman J.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

At least one aryl ring which is part of a fused or bridged...

525192, 525194, 525195, 525196, 525211, 525232, 525233, 525235, 525237, 525240, 524445, 524427, 524523, 524525, 524528, C08L 2326, C08L 2328, C08L 2332, C08L 900

Patent

active

048451452

ABSTRACT:
Thermoplastic compositions of matter useful as gasketing materials as well as flexible boots and seals which are soft, have low compression set and high tensile. The compositions comprise a polyolefin resin and at least two different rubbers, one of which is vulcanized to a fully cured state by a cure system which leaves the other rubber(s) unvulcanized. The preferred embodiment comprises a blend of polypropylene and ethylene vinylacetate as the polyolefin resin component, EPDM as the uncured rubber component and a ZnO cured halogenated butyl rubber. In another embodiment of the invention, the resin is excluded and the uncured rubber is a high crystallinity EPDM.

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