Thermoplastic elastomers based upon chlorinated polyethylene and

Details Thermoplastic elastomers based upon chlorinated polyethylene and Thermoplastic elastomers based upon chlorinated polyethylene and

1988-04-07

1990-03-20

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...

524528, 525192, 525194, 525195, 525240, 525 88, C08L 2326, C08L 2328, C08K 510

Patent

active

049102451

ABSTRACT:
Thermoplastic vulcanizates are prepared by curing, at least partially by dynamic vulcanization, blends of chlorinated polyethylene and crystalline thermoplastic polymers such as polypropylene. Inclusion of a plasticizing material or extender oil, e.g. trioctyl trimellitate, enhances softness and oil resistance of the blends. Vulcanizing materials include a basic material, normally added with the chlorinated polyethylene, and (1) a derivative of 2,5-dimercapto-1,3, 4-thiadiazole or (2) a combination of 2,5-dimercapto-1,3,4-thiadiazole and an activator material such as an amine having a boiling point of 110.degree. C. or higher and a pk value less than 4.5.

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