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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 12410265 B1

PDFFull Text
Date of Patent:
Sep. 09, 2025

Filed:

Feb. 10, 2021

Method for polymer precipitation

Applicant:

Grst Singapore Pte. Ltd., Singapore, SG;

Inventors:

Kam Piu Ho, Hong Kong, CN;

Yingkai Jiang, Shenzhen, CN;

Yangjian Dong, Mianyang, CN;

Assignee:

GRST SINGAPORE PTE. LTD., Singapore, SG;

Attorney:
Primary Examiner:

Rabon A Sergent

Int. Cl.
CPC ...
C08F 6/12 (2006.01); B29B 17/02 (2006.01); B32B 43/00 (2006.01); C08F 220/06 (2006.01); C08F 220/44 (2006.01); C08F 220/56 (2006.01); C08J 3/14 (2006.01); C08J 3/16 (2006.01); C08J 11/06 (2006.01); C08J 11/26 (2006.01); C08K 3/30 (2006.01); C09D 5/00 (2006.01); C09D 133/06 (2006.01); C09D 133/22 (2006.01); C09J 5/02 (2006.01); C09J 133/02 (2006.01); C22B 7/00 (2006.01); H01M 4/04 (2006.01); H01M 4/62 (2006.01); H01M 10/54 (2006.01); H01M 4/66 (2006.01);
U.S. Cl.
CPC ...
C08F 6/12 (2013.01); B29B 17/02 (2013.01); B32B 43/006 (2013.01); C08F 220/06 (2013.01); C08F 220/44 (2013.01); C08F 220/56 (2013.01); C08J 3/14 (2013.01); C08J 3/16 (2013.01); C08J 11/06 (2013.01); C08J 11/26 (2013.01); C08K 3/30 (2013.01); C09D 5/00 (2013.01); C09D 133/064 (2013.01); C09D 133/22 (2013.01); C09J 5/02 (2013.01); C09J 133/02 (2013.01); C22B 7/005 (2013.01); C22B 7/006 (2013.01); H01M 4/622 (2013.01); H01M 10/54 (2013.01); C08J 2333/02 (2013.01); C08J 2333/06 (2013.01); C08J 2333/22 (2013.01); C08K 2003/309 (2013.01); C09J 2203/33 (2013.01); C09J 2301/314 (2020.08); C09J 2301/414 (2020.08); C09J 2301/502 (2020.08); C09J 2433/00 (2013.01); H01M 4/0404 (2013.01); H01M 4/667 (2013.01); Y02E 60/10 (2013.01); Y02W 30/62 (2015.05); Y02W 30/84 (2015.05);
Abstract

Disclosed is a method for precipitating a polymer by adding a precipitation agent into a first suspension to form a second suspension; wherein the first suspension comprises a polymer and an aqueous solvent; and wherein the polymer comprises a copolymer comprising a structural unit derived from an acid group-containing monomer and a structural unit derived from a hydrophobic group-containing monomer. The method for precipitation of a polymer disclosed herein is developed to initiate the bond disruption and/or breakage between the polymer and the aqueous solvent within the second suspension. This is accompanied with the structural transformation of the polymer driven by the intermolecular and intramolecular interactions of the polymer chains which brings about the precipitation of the polymer. The method circumvents both complex separation process and contamination of the polymer, enables excellent materials recovery and allows the precipitation of the polymer to be achieved within a short time frame. An application of the method for precipitating a polymeric binder in a battery electrode is disclosed herein.

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