Patent ID: 6476132
Filing Date: 2002-11-05
Classification: C08L

Abstract:
A thermoplastic elastomer composition, comprisinga) a melt processable semi-crystalline thermoplastic polyolefin which is substantially inert to the other components of the composition, b) an unsaturated rubber which has been fully crosslinked by dynamic vulcanization with a hydrosilylation crosslinking agent and hydrosilylation catalyst, and is interdispersed as fine particles within said thermoplastic polyolefin, and c) a semi-crystalline thermoplastic functionalized polypropylene with at least one â€”(OR) group pendant directly from an Si atom, which Si atom is chemically attached via one or more intermediate molecules to said polypropylene, wherein R is a hydrogen or an alkyl of 1 to 8 carbon atoms, said functionalized polypropylene having been exposed to said hydrosilylation catalyst and bonded to said hydrosilylation crosslinking agent, and wherein said functionalized polypropylene is present from about 0.1 to about 25 weight percent of the combined weight of said thermoplastic polyolefin and functionalized polypropylene.