Thermoplastic vulcanizates from isobutylene rubber and either EP

Details Thermoplastic vulcanizates from isobutylene rubber and either EP Thermoplastic vulcanizates from isobutylene rubber and either EP

1995-11-13

1997-04-15

Zemel, Irina S.

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

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

525240, 525194, 525232, C08L 1502, C08L 2316

Patent

active

056210450

ABSTRACT:
Thermoplastic vulcanizates from semicrystalline polyolefins and blends of crosslinked rubbers are disclosed. The blends are a mixture of at least two rubbers. One rubber is a copolymer predominantly of C.sub.4 to C.sub.7 isomonoolefins (e.g. isobutylene), along with optional monomers of conjugated dienes and/or p-alkylstyrene. This copolymer is optionally halogenated. The second rubber is ethylene/propylene rubber, natural rubber or a rubber polymerized predominantly from a conjugated diene. Such rubbers include polybutadiene, nitrile rubber, butadiene-styrene copolymers or combinations thereof.

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