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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 12312498 B1

PDFFull Text
Date of Patent:
May. 27, 2025

Filed:

Jun. 21, 2022

Binder composition for electrochemical device, conductive material dispersion liquid for electrochemical device, slurry for electrochemical device electrode, electrode for electrochemical device, and electrochemical device

Applicant:

Zeon Corporation, Tokyo, JP;

Inventors:

Yukie Ito, Tokyo, JP;

Tsubasa Miyamae, Tokyo, JP;

Assignee:

ZEON CORPORATION, Tokyo, JP;

Attorney:

KENJA IP LAW PC

Primary Examiner:

Mark Kopec

Assistant Examiner:

Jaison P Thomas

Int. Cl.
CPC ...
C09D 5/24 (2006.01); C08F 236/12 (2006.01); C08K 13/02 (2006.01); C09D 7/61 (2018.01); C09D 7/63 (2018.01); C09D 147/00 (2006.01); H01M 4/62 (2006.01); C08K 3/04 (2006.01); C08K 5/3415 (2006.01); C08K 5/3447 (2006.01); C08K 5/3465 (2006.01);
U.S. Cl.
CPC ...
C09D 5/24 (2013.01); C08F 236/12 (2013.01); C08K 13/02 (2013.01); C09D 7/61 (2018.01); C09D 7/63 (2018.01); C09D 147/00 (2013.01); H01M 4/622 (2013.01); C08F 2800/20 (2013.01); C08K 3/041 (2017.05); C08K 5/3415 (2013.01); C08K 5/3447 (2013.01); C08K 5/3465 (2013.01); C08K 2201/001 (2013.01); C08K 2201/011 (2013.01); C08K 2201/014 (2013.01);
Abstract

Provided is a binder composition that is capable of forming an electrode that can suppress an increase of internal resistance after cycling of an electrochemical device. The binder composition contains a polymer X, N-methyl-2-pyrrolidone, and a nitrogen compound other than N-methyl-2-pyrrolidone. The polymer X includes a nitrile group-containing monomer unit and includes either or both of an aliphatic conjugated diene monomer unit and an alkylene structural unit. The nitrogen compound has a molecular weight of 1,000 or less. An HSP distance (R) between the nitrogen compound and the polymer X is 10.0 MPaor less.

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Ito, Yukie. (2025). Binder composition for electrochemical device, conductive material dispersion liquid for electrochemical device, slurry for electrochemical device electrode, electrode for electrochemical device, and electrochemical device (U.S. Patent No. 12312498). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/12312498

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