IDiyas

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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.:

US 11380935 B1

PDFFull Text
Date of Patent:
Jul. 05, 2022

Filed:

Feb. 21, 2019

Resin composition for nonaqueous electrolyte secondary battery, separator for nonaqueous electrolyte secondary battery using same, resin composition for electrode mixture layer, electrode for nonaqueous electrolyte secondary battery, and nonaqueous electrolyte secondary battery

Applicant:

Kureha Corporation, Tokyo, JP;

Inventors:

Yoshiyuki Nagasawa, Tokyo, JP;

Aya Shike, Tokyo, JP;

Assignee:

KUREHA CORPORATION, Tokyo, JP;

Attorney:

Birch, Stewart, Kolasch & Birch, LLP

Primary Examiner:

Jonathan Crepeau

Assistant Examiner:

Angela J Martin

Int. Cl.
CPC ...
H01M 10/0565 (2010.01); H01M 50/449 (2021.01); C08K 5/02 (2006.01); C08L 27/16 (2006.01); C08L 27/20 (2006.01); H01M 10/0525 (2010.01); C08F 214/22 (2006.01); C08F 214/28 (2006.01); H01M 50/426 (2021.01); H01M 4/04 (2006.01); H01M 4/62 (2006.01);
U.S. Cl.
CPC ...
H01M 10/0565 (2013.01); C08F 214/22 (2013.01); C08F 214/28 (2013.01); C08K 5/02 (2013.01); C08L 27/16 (2013.01); C08L 27/20 (2013.01); H01M 4/0404 (2013.01); H01M 4/623 (2013.01); H01M 10/0525 (2013.01); H01M 50/426 (2021.01); H01M 50/449 (2021.01); H01M 2300/0082 (2013.01); H01M 2300/0085 (2013.01);
Abstract

A resin composition for a non-aqueous electrolyte secondary battery that includes a vinylidene fluoride copolymer having a constituent unit derived from vinylidene fluoride and a constituent unit derived from a fluorine-containing alkyl vinyl compound. A melting point, measured in accordance with ASTM D3418, of the vinylidene fluoride copolymer is from 105° C. to 125° C., and a mass fraction Wof the constituent unit derived from the fluorine-containing alkyl vinyl compound in the vinylidene fluoride copolymer, a degree of crystallinity Dof the vinylidene fluoride copolymer, and a degree of amorphicity Dof the vinylidene fluoride copolymer satisfy Equation (1) below:4.7≤×()≤14  (1).

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