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:
Mar. 12, 2019
Filed:
Feb. 26, 2015
Kureha Corporation, Tokyo, JP;
Keisuke Watanabe, Tokyo, JP;
Shintarou Kamata, Tokyo, JP;
KUREHA CORPORATION, Tokyo, JP;
Abstract
The vinylidene fluoride copolymer of the present invention is a polymer obtained by copolymerizing at least one type of fluorine-based monomer selected from hexafluoropropylene and chlorotrifluoroethylene, vinylidene fluoride, and a compound represented by formula (1) (wherein X is an atomic group having a hydroxyl group or a carboxyl group and having a molecular weight of not greater than 517 with a main chain having from 1 to 19 atoms) and is obtained by adding the compound represented by formula (1) to the fluorine-based monomer and vinylidene fluoride in divided portions or continuously during copolymerization. The gel electrolyte of the present invention contains the vinylidene fluoride copolymer and a non-aqueous electrolyte solution, and the gel electrolyte has an excellent balance of ionic conductivity and gel strength.