Heat-resistant rubber compositions

Details Heat-resistant rubber compositions Heat-resistant rubber compositions

1992-11-13

1994-01-11

Marquis, Melvyn I.

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

Synthetic resins

Processes of preparing a desired or intentional composition...

523213, 524267, 524269, C08K 906

Patent

active

052782042

ABSTRACT:
Disclosed is a heat-resistant rubber composition comprising (A) 100 parts by weight of an ethylene/.alpha.-olefin copolymer or a modified ethylene/.alpha.-olefin copolymer formed by graft-copolymerization with at least one compound selected from the group consisting of unsaturated carboxylic acids and anhydrides and esters thereof, and (B) (i) 10 to 100 parts by weight of a silica type filler which has been treated with a silane compound represented by the following formula: ##STR1## wherein R.sup.1 stands for an alkenyl group, a chloroalkenyl group or a chloroalkyl group, and R.sup.2 stands for a lower alkyl group, or (ii) a combination of 10 to 100 parts by weight of said silane-treated silica type filler or an untreated silica type filler and 0.5 to 30 parts by weight of a polyorganosiloxane having an average composition represented by the following formula:

REFERENCES:
patent: 3795646 (1974-03-01), MacKenzie, Jr. et al.
patent: 4764546 (1988-08-01), Mitsuno et al.

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