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:
Dec. 23, 2014
Filed:
Mar. 27, 2012
Kazuhisa Hayakawa, Joetsu, JP;
Ikuo Fukui, Joetsu, JP;
Soji Tanioka, Tokyo, JP;
Masahiro Ohgata, Osaka, JP;
Masaaki Kajitani, Osaka, JP;
Kazuhisa Hayakawa, Joetsu, JP;
Ikuo Fukui, Joetsu, JP;
Soji Tanioka, Tokyo, JP;
Masahiro Ohgata, Osaka, JP;
Masaaki Kajitani, Osaka, JP;
Shin-Etsu Chemical Co., Ltd., Tokyo, JP;
Matsugaki Chemical Industries Co., Ltd., Osaka, JP;
Abstract
An object of the invention is to provide a binder for a separator which can be comprised by a non-aqueous electrolyte battery with improved heat resistance, a separator comprising the binder, and a non-aqueous electrolyte battery comprising the separator. More specifically, provided are a binder for a separator of a non-aqueous electrolyte battery comprising at least a 2-cyanoethyl group-containing polymer having a molecular weight distribution (Mw/Mn), which is a ratio of a weight-average molecular weight (Mw) to a number-average molecular weight (Mn), of 6 or less, the weight-average molecular weight (Mw) of 50,000 to 1,000,000, and 30% by weight or less of a low molecular weight portion having a molecular weight of 30,000 or less.