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:
Nov. 16, 2010
Filed:
Apr. 01, 2004
Tomoaki Ichikawa, Osaka, JP;
Keisuke Kii, Osaka, JP;
Yoshihiro Uetani, Osaka, JP;
Kazushige Yamamoto, Osaka, JP;
Michio Satsuma, Osaka, JP;
Mutsuko Yamaguchi, Osaka, JP;
Tomoaki Ichikawa, Osaka, JP;
Keisuke Kii, Osaka, JP;
Yoshihiro Uetani, Osaka, JP;
Kazushige Yamamoto, Osaka, JP;
Michio Satsuma, Osaka, JP;
Mutsuko Yamaguchi, Osaka, JP;
Nitto Denko Corporation, Osaka, JP;
Abstract
The invention provides an adhesive-carrying porous film for use as a battery separator, comprising: a substrate porous film, wherein when a 1 mm diameter penetrating thermomechanical analyzer probe is placed on the film under a 70 g load to measure a thickness while heating the film from room temperature at a rate of 200° C./minute to a temperature where the film thickness decreases by half when the probe was initially placed is 200° C. or more, a partially crosslinked adhesive carried on the film, the adhesive is prepared by reacting a reactive polymer having a functional group capable of reacting with an isocyanate group with a polyfunctional isocyanate so the reactive polymer is partially crosslinked, a porous film is temporarily bonded to an electrode to provide an electrode/separator laminate, the porous film in a battery functions as a separator which does not melt or break with small heat shrinkage under high temperatures.