Ozone resistant ethylene/propylene terpolymer laminates to other rubber

Claim 1

A high vulcanized adhesion laminate comprising a rubbery blend containing ethylene/propylene terpolymer directly vulcanized to a conventional rubber composition wherein the rubbery blend containing ethylene/propylene terpolymer is a sulfur vulcanizable composition, the rubbery components thereof comprising (A) a rubbery terpolymer of ethylene, propylene and a nonconjugated diene wherein the terpolymer contains from about 20 to about 80 weight percent units derived from ethylene, from about 20 to about 80 weight percent units derived from propylene and from about 1 to about 15 weight percent units derived from the nonconjugated diene and (B) at least one rubber selected from the group consisting of natural rubber, polyisoprene, polybutadiene, and rubbery copolymers of butadiene and styrene which contain at least 50 percent by weight of bound butadiene, (A) and (B) being present in the ratio of (A) to (B) of about 15: 85 to 35:65, the combined weight of A and B being 100 parts by weight, and containing (C) about 0.75 to about 1.75 parts by weight of a thiazole accelerator, the thiazole accelerator consisting essentially, of at least one accelerator having the following structural formula wherein R'''' and R'''''' are selected from the group consisting of hydrogen, alkyl radicals of one to six carbon atoms, alkoxy radicals of one to six carbon atoms, halogen radicals and nitro radicals and (D) about 0.50 to about 1.50 parts by weight of sulfur wherein the maximum amount of (C) plus (D) is about 2.75 parts.