Ethylene-propylene rubber compositions

Details Ethylene-propylene rubber compositions Ethylene-propylene rubber compositions

1991-10-30

1994-01-18

Kight, III, John

Stock material or miscellaneous articles

Hollow or container type article

Polymer or resin containing

428 3691, 428 3692, B29D 2200, B29D 2300

Patent

active

052798747

ABSTRACT:
An ethylene-propylene rubber composition vulcanizable with sulfur in which the rubber component totally or mainly composed of EPDM is incorporated with a zinc oxide, a carbon black, and other ingredients. The EPDM has an iodine value of 20 to 35 and an active zinc oxide is incorporated therein as the zinc oxide in an amount of 1 to 10 PHR. Even with a sulfur vulcanization system, this ethylene-propylene rubber composition is permitted to have compression set resistance equivalent to that of conventional SBR and is improved in heat resistance as well.

REFERENCES:
patent: 4551392 (1985-11-01), Draexler

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