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:
Sep. 30, 2025
Filed:
Jun. 22, 2021
Zhejiang Quzhou Jusu Chemical Industry Co., Ltd, Zhejiang, CN;
Zhejiang Juhua Technology Center Co., Ltd, Zhejiang, CN;
Zhejiang Juhua Co., Ltd.electrochemistry Plant, Zhejiang, CN;
Yupeng Wu, Zhejiang, CN;
Jinming Han, Zhejiang, CN;
Congli Ma, Zhejiang, CN;
Zhigang Wu, Zhejiang, CN;
Lanhui Su, Zhejiang, CN;
Jinming Wang, Zhejiang, CN;
Zhengliang Wang, Zhejiang, CN;
Xinben Zhao, Zhejiang, CN;
ZHIEJIANG QUZHOU JUSU CHEMICAL INDUSTRY CO., LTD, Zhejiang, CN;
Zhejiang Juhua Technology Center Co., Ltd, Zhejiang, CN;
ZHEJIANG JUHUA CO., LTD. ELECTROCHEMISTRY PLANT, Zhejiang, CN;
Abstract
Disclosed are a copolymerized PVDF resin for lithium battery binders and its preparation method. 300 to 600 parts of deionized water, 0.04 to 0.25 part of a pH buffer regulator, 85 to 99.5 parts of a vinylidene fluoride (VDF) monomer, 0.5 to 15 parts of a comonomer, 0.3 to 3 parts of a metallocene synergist, 0.2 to 1.0 part of an initiator, 0.08 to 0.35 part of a dispersant react at 40 to 65° C., 5.5-8.0 Mpa. At the end of the reaction, the unreacted monomers are recovered, and then the operations of washing, filtering, and drying are carried out to obtain the copolymerized PVDF resin. For the copolymerized PVDF resin for lithium battery binders, the binding of PVDF resin to a positive electrode active material and current collector is improved, and the rotational viscosity of the NMP solution and the preparation and dispersion requirements for PVDF resin slurry are reduced.