Patent ID: 6939918
Filing Date: 2005-09-06
Classification: C08K,C08L

Abstract:
1. A thermoplastic vulcanizate comprising a blend of cured rubber, said cured having a degree of cure where not more than 5 percent of said cured rubber is extractable in boiling xylene or cyclohexane and thermoplastic resin, where said rubber comprises an elastomeric copolymer of ethylene, at least one α-olefin, and optionally one or more diene monomers, where said elastomeric copolymer is characterized by having a crystallinity, as measured by differential scanning calorimetry, of less than 3 J/g, an ethylene content that is less than 70 mole percent based upon the entire copolymer, a weight average molecular weight that is greater than about 40,000 as measured by GPC with polystyrene standards, a molecular weight distribution that is less than 7, and an ethylene compositional distribution that is less than about 4 percent for the closest 90 percent of fractioned samples.