Title:
FLUORINE-CONTAINING POLYMER, CATION EXCHANGE MEMBRANE, AND ELECTROLYSIS VESSEL
Document Type and Number:
WIPO Patent Application WO/2014/203886
Kind Code:
A1
Abstract:
The present invention relates to a cation exchange membrane including a fluorine-containing polymer which includes tetrafluoroethylene units, and perfluoroethylene units having carboxylic acid ion exchange groups. The melt index (a) of the fluorine-containing polymer obtained by methyl esterifying the carboxylic acid ion exchange groups, said melt index (a) being measured under conditions in which the temperature is 270˚C, the load is 2.16 kg, and the orifice internal diameter is 2.09 mm, is 3-50 g/10 min. Furthermore, the melt index (a), and the melt index (b) of the fluorine-containing polymer obtained by methyl esterifying the carboxylic acid ion exchange groups, said melt index (b) being measured under conditions in which the temperature is 260˚C, the load is 2.16 kg, and the orifice internal diameter is 2.09 mm, satisfy the relationship represented by formula (1), namely (a-b)/(270-260) ≤ 0.027×a+0.19.
Inventors:
KAIHARA SHINICHI (JP)
YONEZAWA MASAAKI (JP)
KONAGAYOSHI MASARU (JP)
SHINADA TOMOHIRO (JP)
YONEZAWA MASAAKI (JP)
KONAGAYOSHI MASARU (JP)
SHINADA TOMOHIRO (JP)
Application Number:
PCT/JP2014/066005
Publication Date:
December 24, 2014
Filing Date:
June 17, 2014
Export Citation:
Assignee:
ASAHI KASEI CHEMICALS CORP (JP)
International Classes:
C25B13/08; C08F8/14; C08F214/18; C08J5/22; C25B1/46; C25B9/19
Foreign References:
JP2007146173A | 2007-06-14 | |||
JP2005060516A | 2005-03-10 | |||
JP2004067880A | 2004-03-04 | |||
US3546186A | 1970-12-08 | |||
JP2002275672A | 2002-09-25 |
Other References:
See also references of EP 3012352A4
Attorney, Agent or Firm:
HASEGAWA Yoshiki et al. (JP)
Yoshiki Hasegawa (JP)
Yoshiki Hasegawa (JP)
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