Patent ID: 7723437

Claim:
A thermoplastic vulcanizate composition consisting essentially of: a) from about 30 to about 95 parts by weight of a rubber selected from the group consisting of polyolefin copolymer rubbers, butyl rubber, halobutyl rubber, natural rubber, homo- and copolymers of at least one diene monomer, and combinations thereof b) from about 10 to about 70 parts by weight of a very low density polyethylene copolymer; c) optionally up to 5 parts by weight of polypropylene; d) a curative; and e) one or more additives; wherein said parts by weight are based upon 100 parts by weight of the total amount of said rubber and said very low density polyethylene copolymer, wherein said rubber in said composition is at least partially vulcanized, and where said very low density polyethylene copolymer has a density of from about 0.85 to about 0.91 g/cm 3 , and said very low density polyethylene copolymer is characterized by a CDBI that exceeds about 50%; and wherein the composition has a Shore A hardness (ISO 868-85) of about 35 or less.