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Title:
METHOD FOR PRODUCING AQUEOUS DISPERSION LIQUID OF FLUOROPOLYMER, AQUEOUS DISPERSION LIQUID OF FLUOROPOLYMER, AND COATING MATERIAL COMPOSITION
Document Type and Number:
WIPO Patent Application WO/2024/024891
Kind Code:
A1
Abstract:
Provided is a method for producing an aqueous dispersion liquid of a fluoropolymer, with which a fluoropolymer-containing aqueous dispersion liquid is produced, the method comprising polymerizing a fluoromonomer in the presence of a fluorine-containing surfactant, a polymerization initiator, and an aqueous medium in a reactor to prepare an aqueous dispersion liquid containing a fluoropolymer, heat treating this aqueous dispersion liquid, adding a non-ionic surfactant to the heat-treated aqueous dispersion liquid, bringing the non-ionic surfactant-containing aqueous dispersion liquid into contact with an ion exchange resin, and concentrating the aqueous dispersion liquid obtained following the contact with the ion exchange resin.

Inventors:
YAMABE TAKUYA (JP)
YOSHIDA HIROTOSHI (JP)
YAMAZAKI RANNA (JP)
YAMAMOTO EMI (JP)
KATO TAKETO (JP)
NAKATANI YASUKAZU (JP)
YAMANAKA TAKU (JP)
Application Number:
PCT/JP2023/027577
Publication Date:
February 01, 2024
Filing Date:
July 27, 2023
Export Citation:
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Assignee:
DAIKIN IND LTD (JP)
International Classes:
C08F6/14; C08F2/24; C08F6/16; C08F6/20
Domestic Patent References:
WO2022050430A12022-03-10
WO2020213691A12020-10-22
Foreign References:
JP2020200471A2020-12-17
JP2007023088A2007-02-01
JP2021523960A2021-09-09
JP2008525591A2008-07-17
JP2006299267A2006-11-02
Attorney, Agent or Firm:
TOKOSHIE PATENT FIRM (JP)
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