Curable composition containing EPM or EPDM interpolymers

Claim 1

A composition having controlled room temperature cure containing an interpolymer selected from the group consisting of an EPM interpolymer formed by copolymerization in the presence of a Ziegler catalyst of ethylene, a monoolefin containing 3 to 12 carbon atoms, and an unsaturated organo-silane having at least one unsaturated organic group and from 1 to 3 highly hydrolyzable groups other than oxygen containing groups thereby to avoid poisoning the catalyst and maintaining the stability of the polymerization reaction attached to the silicon atom and an EPDM interpolymer of ethylene, a monolefin containing 3 to 12 carbon atoms, a polyene and an unsaturated organosilane of the type described with hydrolyzable groups remaining on the organosilanes bound in the interpolymer replacing the hydrolyzable groups with short chained alkoxy groups at a time when they can no longer interfere with the polymerization reaction, and an organotin carboxylate for controlling room temperature cure of the interpolymer containing the short chained alkoxy groups.