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AssigneesJsr Corporation, Honda Giken Kogyo Kabushiki Kaisha
InventorsKohei Goto, Mayumi Kakuta, Fusazumi Masaka, Kiyonori Kita, Naoki Mitsuta, Masaru Iguchi, Hiroshi Soma, Nagayuki Kanaoka
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The invention provides a proton conductive membrane excellent in heat resistance, which has sulfonic acid as ion exchange groups. The proton conductive membrane comprises a nitrogen-containing compound that can be mixed with water in arbitrary proportions and has a boiling point of not lower than 100. degree. C. and a proton conductive resin which has sulfonic acid ion-exchange groups, wherein the nitrogen-containing compound is contained in an amount of 0.5 to 10 parts by weight based on 100 parts by weight of the proton conductive resin.
A proton conductive membrane with a dry thickness of 10 to 100 μm comprising a nitrogen-containing compound which can be mixed with water in arbitrary proportions and has a boiling point of not lower than 100° C. and a proton conductive resin which is a sulfonated polyarylene and has sulfonic acid as ion exchange groups, wherein the nitrogen-containing compound is contained in an amount of 0.5 to 10 parts by weight based on 100 parts by weight of the proton conductive resin.
A process for producing a proton conductive membrane comprising the steps of
Dependencies are inferred from the claim text.