Title:
METHOD FOR PRODUCING PURIFIED POLYTETRAFLUOROETHYLENE AQUEOUS DISPERSION LIQUID, METHOD FOR PRODUCING MODIFIED POLYTETRAFLUOROETHYLENE POWDER, METHOD FOR PRODUCING POLYTETRAFLUOROETHYLENE MOLDED BODY, AND COMPOSITION
Document Type and Number:
Japanese Patent JP2023171579
Kind Code:
A
Abstract:
To provide a polytetrafluoroethylene aqueous dispersion liquid from which fluorine-containing compounds have been removed or reduced.SOLUTION: The present invention discloses a method for producing a purified polytetrafluoroethylene aqueous dispersion liquid, the method including a step of removing or reducing compounds represented by general formula (1) or (2) from a polytetrafluoroethylene aqueous dispersion liquid prepared with a hydrocarbon-based surfactant. General formula (1): (H-(CF2)m-COO)pM1. General formula (2): (H-(CF2)n-SO3)qM2.SELECTED DRAWING: None
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Inventors:
TAIRA TAKAHIRO
MISHIMA KAZUHIRO
OKUI CHIAKI
HAYASHI TADAO
YOSHIDA HIROTOSHI
TANAKA YUJI
MIYAMOTO MASAYOSHI
YAMANAKA HIROSHI
KATO TAKETO
MISHIMA KAZUHIRO
OKUI CHIAKI
HAYASHI TADAO
YOSHIDA HIROTOSHI
TANAKA YUJI
MIYAMOTO MASAYOSHI
YAMANAKA HIROSHI
KATO TAKETO
Application Number:
JP2023176187A
Publication Date:
December 01, 2023
Filing Date:
October 11, 2023
Export Citation:
Assignee:
DAIKIN IND LTD
International Classes:
C08F14/26; C08F6/16
Attorney, Agent or Firm:
Patent Attorney Corporation Tokoshie Patent Office