Nitrile group-containing highly saturated copolymer rubber and r

Details Nitrile group-containing highly saturated copolymer rubber and r Nitrile group-containing highly saturated copolymer rubber and r

1990-06-25

1991-05-07

Lipman, Bernard

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

Synthetic resins

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

525338, 525339, C08F 804

Patent

active

050137972

ABSTRACT:
A nitrile group-containing, highly saturated copolymer rubber is disclosed, the copolymer chain of which is comprised of (1) 5 to 40% by weight of units of an unsaturated nitrile monomer, (2) 1 to 80% by weight of units of a monomer selected from a fluorine-free unsaturated carboxylic acid ester monomer and a fluorine-containing vinyl monomer and (3) up to 20% by weight of units of a conjugated diene monomer, with the balance being (4) units of a hydrogenated conjugated diene monomer, wherein the sum of the contents of the monomer units (1) and (2) is 30 to 90% and the sum of the contents of the monomer units (3) and (4) is 10 to 70% by weight. This copolymer rubber results in a rubber composition having an improved cold resistance.

REFERENCES:
patent: T867054 (1969-04-01), Dickakian
patent: 3264272 (1966-08-01), Rees
patent: 3904580 (1975-09-01), Lasig et al.
patent: 4001193 (1977-01-01), Van Bonin et al.
patent: 4222921 (1980-09-01), Van Eenam
patent: 4404329 (1983-09-01), Maeda et al.
patent: 4829128 (1989-05-01), Buding et al.

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