Vulcanizable rubber composition

Details Vulcanizable rubber composition Vulcanizable rubber composition

1978-07-24

1981-05-19

Lieberman, Allan

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

Synthetic resins

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

525404, C08L 7102

Patent

active

042686440

ABSTRACT:
A vulcanizable rubber composition composed of 100 parts by weight of a terpolymer rubber (A) composed of 35 to 80 mole % of epichlorohydrin, 15 to 50 mole % of ethylene oxide and 5 to 15 mole % of an unsaturated epoxide, 0.2 to 10 parts by weight of a non-sulfur vulcanizing agent, and 0 to 10 parts by weight of a vulcanization aid. A vulcanized rubber prepared from this composition has superior sour gasoline resistance (softening resistance and resistance to embrittlement) and cold resistance. A rubber mixture (B) of an epichlorohydrin-ethylene oxide copolymer rubber and an epichlorohydrin-unsaturated epoxide copolymer rubber containing 35 to 80 mole % of epichlorohydrin, 15 to 50 mole % of ethylene oxide and 5 to 15 mole % of an unsaturated epoxide may be substituted for the terpolymer rubber (A).

REFERENCES:
patent: 3158591 (1964-11-01), Vandenberg
patent: 3341491 (1967-09-01), Robinson et al.
patent: 3787376 (1974-01-01), Nakamura et al.
patent: 3876590 (1975-04-01), Shimogawa et al.
patent: 4032479 (1977-06-01), Bunnomori et al.

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