The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 06, 2005
Filed:
Mar. 23, 2001
Maria D. Ellul, Silver Lake Village, OH (US);
Sudhin Datta, Houston, TX (US);
Jianya Cheng, Fairlawn, OH (US);
Paul Mcdaniel, Cuyahoga Falls, OH (US);
Kang-bo Wang, Copley, OH (US);
Maria D. Ellul, Silver Lake Village, OH (US);
Sudhin Datta, Houston, TX (US);
Jianya Cheng, Fairlawn, OH (US);
Paul McDaniel, Cuyahoga Falls, OH (US);
Kang-Bo Wang, Copley, OH (US);
Advanced Elastomer Systems L.P., Akron, OH (US);
Abstract
The present invention provides a thermoplastic vulcanizate prepared by a process comprising the steps of dynamically vulcanizing rubber within a blend that includes the rubber and a thermoplastic resin, where the rubber comprises an elastomeric copolymer of ethylene, at least one α-olefin, and optionally one or more diene monomers, where the elastomeric copolymer is characterized by having a crystallinity, as measured by differential scanning calorimetry, of less than 10 J/g, an ethylene content that is less than 90 mole percent based upon the entire copolymer, a weight average molecular weight that is greater than about 20,000 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.