Patent ID: 7081287
Filing Date: 2006-07-25
Classification: B29C,B29K,B29L,F16L,Y10T

Abstract:
1. A thermoplastic vulcanizate matrix which resists chemical attack and withstands temperatures up to about 300° F. for prolonged periods of time, said thermoplastic vulcanizate matrix comprising: a thermoplastic polymer in an amount of about 30 to 70 weight % of said thermoplastic vulcanizate matrix, wherein said thermoplastic polymer is selected from the group consisting of polyurethane, polyether, polyimide, polysulfone and mixtures thereof; a vulcanized chlorine-containing polyolefin elastomer in an amount of about 70 to 30 weight % of said thermoplastic vulcanizate matrix, wherein said chlorine-containing polyolefin elastomer is a mixture of two or more members selected from the group consisting of A, B, C, D, E, and F, wherein A is chlorinated polyethylene, B is chlorinated polypropylene, C is chlorinated copolymers of ethylene and propylene, D is chlorosulfonated polyethylene, E is chlorosulfonated polypropylene, and F is chlorosulfonated copolymers of ethylene and propylene, with the proviso that mixtures of A&B; A&C; A&D; B&C; B&D; C&D; A, B&C; A, B&D; A, C&D; and A, B, C&D are excluded; and a crosslinking agent selected from the group consisting of peroxide, a polyamine containing two or more functional groups, a polyols containing two or more functional groups, and mixtures thereof, wherein, said crosslinking agent is present in said thermoplastic vulcanizate matrix in an amount of about 0 to 5% by weight of said thermoplastic vulcanizate matrix, said chlorine-containing polyolefin elastomer having been vulcanized in said thermoplastic vulcanizate matrix by dynamic vulcanization.