- 专利标题: METHOD FOR PRODUCING LIQUID COMPOSITION, METHOD FOR PRODUCING COATING LIQUID FOR FORMING CATALYST LAYER, AND METHOD FOR PRODUCING MEMBRANE ELECTRODE ASSEMBLY
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申请号: US15799205申请日: 2017-10-31
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公开(公告)号: US20180051159A1公开(公告)日: 2018-02-22
- 发明人: Satoru HOMMURA , Hiroyuki WATABE , Masahiro KASEDA , Toshihiro TANUMA
- 申请人: ASAHI GLASS COMPANY, LIMITED
- 申请人地址: JP Chiyoda-ku
- 专利权人: ASAHI GLASS COMPANY, LIMITED
- 当前专利权人: ASAHI GLASS COMPANY, LIMITED
- 当前专利权人地址: JP Chiyoda-ku
- 优先权: JP2015-163726 20150821
- 主分类号: C08K5/02
- IPC分类号: C08K5/02 ; C08K5/06 ; C08L27/12 ; C08L29/10 ; H01M4/92 ; H01M4/88
摘要:
To provide a method for producing a liquid composition or a coating liquid for forming a catalyst layer, which can make cracking less likely to occur at the time of forming a solid polymer electrolyte membrane or a catalyst layer; and a method for producing a membrane electrode assembly, which can make cracking less likely to occur at the time of forming the catalyst layer or the solid polymer electrolyte membrane. This liquid composition is prepared by dispersing in a medium containing water and a hydrocarbon-type alcohol a polymer (x) having a structural unit having a ring structure and a structural unit having an ion exchange group, or a polymer (y) having either one or both of a structural unit having two ion-exchange groups in a pendant group and a structural unit having one ion exchange group in a short-chain pendant group, to prepare a dispersion in which the concentration of the polymer (x) or the polymer (y) is from 10 to 26 mass %, and mixing the dispersion and a fluorinated solvent so that the sum of the concentration of the polymer (x) or the polymer (y) and the concentration of the fluorinated solvent becomes to be from 12 to 35 mass %.
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