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1. (WO2018180812) METHOD FOR MANUFACTURING CROSSLINKED POLYMER OR SALT THEREOF

Pub. No.:    WO/2018/180812    International Application No.:    PCT/JP2018/011168
Publication Date: Fri Oct 05 01:59:59 CEST 2018 International Filing Date: Wed Mar 21 00:59:59 CET 2018
IPC: H01M 4/62
C08F 8/44
Applicants: TOAGOSEI CO., LTD.
東亞合成株式会社
Inventors: HASEGAWA Takashi
長谷川 剛史
SAITO Naohiko
斎藤 直彦
NISHIWAKI Atsushi
西脇 篤史
MATSUZAKI Hideo
松崎 英男
Title: METHOD FOR MANUFACTURING CROSSLINKED POLYMER OR SALT THEREOF
Abstract:
The present specification provides a method for manufacturing a crosslinked polymer having a carboxyl group, used in a binder for a non-aqueous electrolyte secondary cell electrode, or a salt thereof. The method for manufacturing a crosslinked polymer or a salt thereof is provided with: a polymerization step for performing precipitation polymerization of a monomer component containing 50-100 mass% of structural units derived from an ethylenically unsaturated carboxylic acid monomer in relation to all structural units; and one or more cleaning steps after the polymerization step. As a result of the cleaning step, the total amount of the ethylenically unsaturated carboxylic acid monomer and salts thereof in terms of unneutralized form in relation to the total amount of the crosslinked polymer and salts thereof is 5.0 mass% or below.