Title:
含フッ素重合体製造方法及び含フッ素重合体物
Document Type and Number:
Japanese Patent JP4618130
Kind Code:
B2
Abstract:
It is an object of the present invention to provide a method of producing a fluoropolymer high in terminal group stability and excellent in moldability. The present invention relates to a method of producing a fluoropolymer by which a melt-processable fluoropolymer (A) having a specific unstable terminal group or groups (P) is subjected to melt-kneading in a kneader comprising a stabilization treatment zone to thereby produce a fluoropolymer (B) resulting from conversion of said specific unstable terminal group or groups (P) to -CF 2 H,
said specific unstable terminal group or groups (P) comprising alkoxycarbonyl groups, fluoroalkoxycarbonyl groups and/or carboxyl group quaternary nitrogen compound salts,
the melt-kneading being carried out in the absence or presence of an alkali metal element or alkaline earth metal element,
the mass of said alkali metal element or alkaline earth metal element being not greater than 2 ppm of the composition under melt-kneading, and
the melt-kneading in said stabilization treatment zone being carried out in the presence of water.
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Inventors:
Yoshiyuki Takase
Kenji Ishii
Fukuoka Shoji
Kenji Ishii
Fukuoka Shoji
Application Number:
JP2005515661A
Publication Date:
January 26, 2011
Filing Date:
November 19, 2004
Export Citation:
Assignee:
Daikin Industries, Ltd.
International Classes:
C08F8/00; C08F14/18
Domestic Patent References:
| JP2000198813A | ||||
| JP3500547A |
Foreign References:
| WO2001018076A1 |
Attorney, Agent or Firm:
Atomi International Patent Office
Yasuo Yasutomi
Yasuo Yasutomi