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:
Feb. 09, 2016
Filed:
Nov. 02, 2012
Denki Kagaku Kogyo Kabushiki Kaisha, Tokyo, JP;
Sei Corporation, Tsu-shi, Mie, JP;
Hironori Konishi, Ichihara, JP;
Daisuke Shimiya, Ichihara, JP;
Kazuhiro Kote, Ichihara, JP;
Takehiko Sawai, Tsu, JP;
Shinji Saito, Tsu, JP;
Jun Nakagawa, Tsu, JP;
DENKA COMPANY LIMITED, Tokyo, JP;
SEI CORPORATION, Tsu-Shi, JP;
Abstract
An object of the invention is to provide an electrode material slurry for preparation of lithium-ion secondary batteries favorable in properties and superior in storage stability and an aqueous binder composition for lithium-ion secondary batteries that can be used for production of lithium-ion secondary batteries superior in discharge rate characteristics and cycle characteristics. Provided is a binder composition for lithium-ion secondary battery electrode, comprising polymer particles containing (a) an ethylenic unsaturated carboxylic ester compound and (b) an ethylenic unsaturated sulfonic acid compound at a (a)/(b) mass ratio of (98 to 91)/(2 to 9) in a total (a) and (b) amount of 70 mass % or more, based on the monomeric raw materials.