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Fluorine-containing polymer, fluorine-containing polymer material and manufacturing method 发明申请

2023-10-20 1560 173K 0

专利信息

申请日期 2025-07-09 申请号 JP2005515661
公开(公告)号 JPWO2005049661A1 公开(公告)日 2007-11-29
公开国别 JP 申请人省市代码 全国
申请人 CANON INC
简介 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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