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Title:
CATION EXCHANGE MEMBRANE AND METHOD FOR PRODUCING SAME
Document Type and Number:
WIPO Patent Application WO/2014/057821
Kind Code:
A1
Abstract:
Provided are a cation exchange membrane, said cation exchange membrane not showing such changes in ion exchanging performance as observed in the course of using polyvinyl alcohol-based ion exchange membranes, having excellent basic characteristics, for example, membrane resistance and ion transportation rate and a high membrane strength, and being useful in electrodialysis too, and a method for producing the same. Disclosed are: (1) a cation exchange membrane containing a polyvinyl alcohol-based copolymer (P) that comprises an anionic polymer segment having an anionic group and a vinyl alcohol polymer segment, and having a microphase-separated structure wherein a domain size (X) is within the range of 0

Inventors:
NAKASHIMA TAKAHIRO (JP)
JIKIHARA ATSUSHI (JP)
WAKUI TAKASHI (JP)
HIGA MITSURU (JP)
Application Number:
PCT/JP2013/076375
Publication Date:
April 17, 2014
Filing Date:
September 27, 2013
Export Citation:
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Assignee:
KURARAY CO (JP)
UNIV YAMAGUCHI (JP)
International Classes:
C08J5/22; C08F297/00
Domestic Patent References:
WO2010119858A12010-10-21
WO2008090774A12008-07-31
WO2008018487A12008-02-14
WO2008090774A12008-07-31
Foreign References:
JPH03168239A1991-07-22
JPH02196233A1990-08-02
JPH05174856A1993-07-13
JP2011103295A2011-05-26
JPH05174856A1993-07-13
JPH0676838A1994-03-18
JPS59187003A1984-10-24
JPS59189113A1984-10-26
Other References:
MITSURU HIGA ET AL.: "Characterization of cation- exchange membranes prepared from poly(vinyl alcohol) and poly(vinyl alcohol-b-styrene sulfonic acid)", INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, vol. 37, no. 7, 16 July 2011 (2011-07-16), pages 6161 - 6168, XP055260242
Attorney, Agent or Firm:
SUGIMOTO, Shuji et al. (JP)
Shuji Sugimoto (JP)
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