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Title:
FLUOROPOLYMER AQUEOUS DISPERSION PRODUCTION METHOD AND FLUOROPOLYMER AQUEOUS DISPERSION
Document Type and Number:
WIPO Patent Application WO/2020/218622
Kind Code:
A1
Abstract:
This method for producing a refined fluoropolymer aqueous dispersion is characterized by comprising a step A for bringing a fluoropolymer aqueous dispersion obtained by using a hydrocarbon-based surfactant into contact with an anion exchange resin A or a synthetic adsorbent, wherein the anion exchange resin A has an ion exchange group represented by general formula (A1): -N+R1R2R3X- (in the formula, R1, R2, and R3 are the same or different from each other and each represent a hydrogen atom or an organic group, at least one of R1, R2, and R3 is an organic group having 3 or more carbon atoms, and X represents a counter ion) or has an ion exchange group represented by general formula (A2): -NR4R5 (in the formula, R4 and R5 are the same or different from each other and each represent a hydrogen atom or an organic group, and at least one of R4 and R5 is an organic group having 2 or more carbon atoms).

Inventors:
HAYASHI TADAO (JP)
TAIRA TAKAHIRO (JP)
YOSHIDA HIROTOSHI (JP)
OKUI CHIAKI (JP)
YAMANAKA TAKU (JP)
KATO TAKETO (JP)
Application Number:
PCT/JP2020/018045
Publication Date:
October 29, 2020
Filing Date:
April 27, 2020
Export Citation:
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Assignee:
DAIKIN IND LTD (JP)
International Classes:
B01J20/26; C08F6/16; B01J20/28; B01J41/05; B01J41/14; B01J47/018; C08K5/095; C08K5/098; C08L27/12
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Attorney, Agent or Firm:
TOKOSHIE PATENT FIRM (JP)
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