Title:
LIQUID COMPOSITION PRODUCTION METHOD, CATALYST LAYER-FORMING COATING LIQUID PRODUCTION METHOD, AND MEMBRANE ELECTRODE ASSEMBLY PRODUCTION METHOD
Document Type and Number:
WIPO Patent Application WO/2017/038827
Kind Code:
A1
Abstract:
Provided are: a method with which it is possible to produce a liquid composition having suppressed the generation of a fluorine-containing polymer having an ion-exchange group having a relatively large particle size; a method with which it is possible to produce a catalyst layer-forming coating liquid capable of forming a catalyst layer having suppressed contamination with foreign matter; and a production method for a membrane electrode assembly capable of forming a catalyst layer or a solid state polymer electrolyte membrane having suppressed contamination with foreign matter. In this liquid composition production method, a fluorine-containing polymer having a -SO2F group is held at 140-160°C for at least 45 minutes, the fluorine-containing polymer having the -SO2F group which has been held at 140-160°C is cooled to less than 110°C at a speed of at least 50°C/min, the -SO2F group of the fluorine-containing polymer having the -SO2F group which has been cooled to less than 110°C is converted to an ion-exchange group to obtain a fluorine-containing polymer having an ion-exchange group, and the fluorine-containing polymer having the ion-exchange group and a liquid medium are mixed.
Inventors:
WATABE HIROYUKI (JP)
WAKABAYASHI HIROKAZU (JP)
WAKABAYASHI HIROKAZU (JP)
Application Number:
PCT/JP2016/075350
Publication Date:
March 09, 2017
Filing Date:
August 30, 2016
Export Citation:
Assignee:
ASAHI GLASS CO LTD (JP)
International Classes:
C08F8/00; C08F16/24; H01M4/86; H01M4/88; H01M8/02; H01M8/10
Domestic Patent References:
| WO2013176185A1 | 2013-11-28 | |||
| WO2008062653A1 | 2008-05-29 | |||
| WO2004066426A1 | 2004-08-05 |
Foreign References:
| JP2003292532A | 2003-10-15 | |||
| JP2010018674A | 2010-01-28 | |||
| JP2013181128A | 2013-09-12 | |||
| JP2008506834A | 2008-03-06 |
Other References:
See also references of EP 3345937A4
Attorney, Agent or Firm:
SENMYO, Kenji et al. (JP)
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