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. 25, 2007
Filed:
Jun. 21, 2005
Nobuyuki Ito, Shunan, JP;
Seiichi Shimomura, Shunan, JP;
Tuneo Hironaka, Hofu, JP;
Hideyoshi Nakamura, Shunan, JP;
Nobuyuki Ito, Shunan, JP;
Seiichi Shimomura, Shunan, JP;
Tuneo Hironaka, Hofu, JP;
Hideyoshi Nakamura, Shunan, JP;
Tosoh Corporation, Yamaguchi, JP;
Abstract
A chlorosulphonated ethylene-α-olefin copolymer having a chlorine content of 0.5-20% by weight and a glass transition temperature in differential scanning calorimetry (DSC) of −50° C. or lower and being crystalline. The chlorosulphonated ethylene-α-olefin copolymer is obtained by chlorinating a crystalline ethylene-α-olefin copolymer having a density of 890 kg/mor lower, obtained by copolymerizing α-olefin comprising a hydrocarbon having 4 or more carbon atoms, with ethylene, and then chlorosulphonating the chlorinated copolymer.