Title:
ION-CONDUCTING MEMBRANE PRODUCTION METHOD AND PRODUCTION DEVICE
Document Type and Number:
WIPO Patent Application WO/2017/141710
Kind Code:
A1
Abstract:
The purpose of the present invention is to provide a production method for producing an ion-conducting membrane with reduced impurities in a short time. A further purpose is to provide a more compact ion-conducting membrane production device which can reduce the amount of treatment solution used. In order to achieve this purpose, this production method has the following configuration. This method, for producing an ion-conducting membrane that contains a polymer having an ionic group, involves multiple liquid treatment steps in which a precursor membrane is brought into contact with an acid treatment solution or an alkali treatment solution, said precursor membrane containing a polymer in a state in which the aforementioned ionic group forms a salt with an impurity ion, wherein the liquid treatment time in the second and subsequent liquid treatment steps of the multiple liquid treatment steps is shorter than the liquid treatment time in the initial liquid treatment step.
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Inventors:
FUKUDA SEIJI (JP)
YABUUCHI YUKO (JP)
YABUUCHI YUKO (JP)
Application Number:
PCT/JP2017/003629
Publication Date:
August 24, 2017
Filing Date:
February 01, 2017
Export Citation:
Assignee:
TORAY INDUSTRIES (JP)
International Classes:
H01M8/02; B01J39/18; B01J39/19; B01J39/20; B01J41/12; B01J41/13; B01J41/14; B01J47/12; B08B3/04; C08J5/22; H01B13/00; H01M8/10
Foreign References:
| JP2013056993A | 2013-03-28 | |||
| JP2011194593A | 2011-10-06 | |||
| JP2007262346A | 2007-10-11 | |||
| JP2004123971A | 2004-04-22 | |||
| JP2006307163A | 2006-11-09 | |||
| JP2003245615A | 2003-09-02 | |||
| JP2006095346A | 2006-04-13 | |||
| JPH09302487A | 1997-11-25 |
Other References:
See also references of EP 3419092A4
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