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. 14, 2004
Filed:
Dec. 26, 2002
Kathleen A. Perevosnik, Akron, OH (US);
Sunny Jacob, Akron, OH (US);
William Gary Stevenson, Uniontown, OH (US);
Curtis Waddle, Canal Fulton, OH (US);
Advanvced Elastomer Systems, L.P., Akron, OH (US);
Abstract
A thermoplastic vulcanizate prepared by dynamically vulcanizing a halogenated butyl rubber within a mixture that includes the halogenated butyl rubber and from about 10 to about 100 parts by weight of a crystalline thermoplastic resin per 100 parts by weight rubber, to thereby form a thermoplastic vulcanizate, where the thermoplastic resin includes a resin other than polyethylene, melt mixing the thermoplastic vulcanizate with about 5 to about 75 parts by weight of polyethylene resin per 100 parts by weight rubber, from about 3 to about 60 parts by weight of a tackifier per 100 parts by weight rubber, and from about 5 to about 250 parts by weight of a block copolymer containing at least the structure S-B/S-S per 100 parts by weight rubber, where the S block of the block copolymer has a glass transition temperature above about 25° C., the B/S block has a glass transition temperature below about 25° C., and the S content of the B/S block is from about 40 to about 60 percent by weight of said S/B block, the diene content of the total block copolymer is less than 40 weight percent, and the B/S block amount to at least 50 weight percent of the total block copolymer.