EPDM interpolymers formed with unsaturated organosilanes

Claim 1

An interpolymer which is the product of the interpolymerization in the presence of a Ziegler type catalyst of monomers consisting essentially of (1) ethylene, (2) a monoolefin having from 3 to 20 carbon atoms, (3) a polyene selected from the group consisting of an open chain polyunsaturated hydrocarbon having from 4 to 20 carbon atoms and a polyunsaturated bridged ring hydrocarbon, and (4) an ethylenically unsaturated organosilane having the general formula R n SiX 4 -n in which X is a highly hydrolyzable group selected from the group consisting of a halogen and a tertiary amine, n is an integer from 1 to 3, and R is a group selected from the group consisting of hydrogen, alkyl, aryl, alkaryl, arylalkyl, cyclic or heterocyclic group, in which at least one of the R groups is a norbornenyl group, in which the ethylene and monoolefin are present in the interpolymer in the mole ratio of 20-95 moles ethylene to 80-5 moles monoolefin, the polyene is chemically bound in the interpolymer in an amount within the range of 0.1 to 10 mole percent of the total number of moles of ethylene, monoolefin and polyene, and the unsaturated organosilane is present in the polymer in an amount of more than 0.01% but less than 1.0% by weight.