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...
Patent
1984-07-11
1986-08-19
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...
524525, 524526, 524528, 524519, 524445, 525192, 525193, 525194, 525195, 525196, 525211, 525215, 525232, 525237, 525240, 525197, C08L 1100, C08L 1502, C08L 2326
Patent
active
046070745
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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Booth D. A.
Hazelton Donald R.
Puydak Robert C.
Cohen H. L.
Exxon Research & Engineering Co.
Seccuro Carman J.
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