Title:
PRODUCTION METHOD OF FLUOROPOLYMER
Document Type and Number:
Japanese Patent JP2023166629
Kind Code:
A
Abstract:
To provide a production method which enables production of a fluoropolymer containing substantially no dimer or trimer of a monomer which constitutes a polymer used for polymerization of a fluoromonomer.SOLUTION: Provided is a production method of a fluoropolymer, comprising the steps of: obtaining a crude composition including a polymer of a monomer (I) represented by CX1X3=CX2R(-CZ1Z2-A0)m in an aqueous medium, substantially in the absence of a fluorine-containing surfactant; obtaining a polymer (I) in which a content of a dimer or a trimer of the monomer (I) is 1.0 mass% or less relative to the polymer (I) by removing the dimer or trimer of the monomer (I) contained in the crude composition from the crude composition; and obtaining a fluoropolymer by polymerizing a fluoromonomer in an aqueous medium in the presence of the polymer (I).SELECTED DRAWING: None
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Inventors:
YAMANAKA HIROSHI
AZUMA MASAHIRO
KATO TAKETO
ICHIKAWA KENJI
FUJIMOTO YOHEI
IRIE MASAKI
TSUCHIYA SOJI
YUASA SOTA
AZUMA MASAHIRO
KATO TAKETO
ICHIKAWA KENJI
FUJIMOTO YOHEI
IRIE MASAKI
TSUCHIYA SOJI
YUASA SOTA
Application Number:
JP2023161585A
Publication Date:
November 21, 2023
Filing Date:
September 25, 2023
Export Citation:
Assignee:
DAIKIN IND LTD
International Classes:
C08F2/44; C08F259/08; C08F14/18
Attorney, Agent or Firm:
Patent Attorney Corporation Tokoshie Patent Office