Rubber compositions of ethylene-propylene elastomers

Details Rubber compositions of ethylene-propylene elastomers Rubber compositions of ethylene-propylene elastomers

1981-02-27

1983-03-08

Briggs, Sr., Wilbert 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...

524506, 525105, 525106, 525282, 525479, C08K 336, C08L 2316, C08L 8306

Patent

active

043761844

ABSTRACT:
The invention provides a novel rubber composition based on an ethylene-propylene copolymeric rubbery elastomer and curable by hot air vulcanization under atmospheric pressure giving great advantages over conventional ones vulcanizable only under pressure. The inventive rubber composition comprises, in addition to the ethylene-propylene copolymeric rubbery elastomer, an oganopolysiloxane gum having alkenyl or mercapto groups in the molecule, a reinforcing silica filler, an organic compound having at least two maleimido groups in a molecule and a curing agent which is an organic peroxide or an organic sulfur compound.

REFERENCES:
patent: 4201698 (1980-05-01), Itoh et al.
patent: 4265801 (1981-05-01), Moody et al.
patent: 4268637 (1981-05-01), Weldy

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