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:
Jan. 08, 2013
Filed:
Sep. 10, 2008
Hiroyoshi Take, Osaka, JP;
Shunsuke Noumi, Osaka, JP;
Sadahiro Nakanishi, Osaka, JP;
Yoshihiro Uetani, Osaka, JP;
Keisuke Kii, Osaka, JP;
Kinkou Sho, Osaka, JP;
Hiroyoshi Take, Osaka, JP;
Shunsuke Noumi, Osaka, JP;
Sadahiro Nakanishi, Osaka, JP;
Yoshihiro Uetani, Osaka, JP;
Keisuke Kii, Osaka, JP;
Kinkou Sho, Osaka, JP;
Nitto Denko Corporation, Osaka, JP;
Abstract
The invention provides a battery separator comprising a porous resin film and a crosslinked polymer supported thereon and having iminodiacetic acid groups in side chains of the polymer chains. The iminodiacetic acid group is preferably represented by the formula wherein Mand Mare each independently a hydrogen atom, a lithium atom, a potassium atom, a sodium atom, or triethylamine. It is preferred that the layer of the crosslinked polymer is substantially nonporous or solid, and ion conductive, and that the crosslinked polymer has in the molecule oxetanyl groups which are capable of cation polymerization.