Asahi Glass Company, Limited

Jyunichi Tayanagi

Atsushi Watakabe

Isamu Kaneko

Susumu Saito

Koichi Murata

Tetsuji Shimohira

Satoru Hommura

Seigo Kotera

To provide a polymer electrolyte material for polymer electrolyte fuel cells, which is an electrolyte material having a high ion exchange capacity and a low resistance, and which has a higher softening temperature than a conventional electrolyte material. An electrolyte material for polymer electrolyte fuel cells, which is made of a polymer containing repeating units based on a fluoromonomer having a radical polymerization reactivity, wherein the repeating units contain, in their side chains, a structure having ionic groups represented in the following formula (&#x3b1;) (provided that in the formula, each of Qand Qwhich are independent of each other, is a single bond or a perfluoroalkylene group that may have an etheric oxygen atom, provided that they are not single bonds at the same time, Ris a perfluoroalkyl group which may have an etheric oxygen atom, and X is an oxygen atom, a nitrogen atom or a carbon atom, provided that when X is an oxygen atom, a=0, when X is a nitrogen atom, a=1, and when X is a carbon atom, a=2, and Y is a fluorine atom or a monovalent perfluoro organic group). 

Electrolyte material for polymer electrolyte fuel cells, electrolyte membrane and membrane/electrode assembly

A compound containing two fluorosulfonyl groups which are groups convertible to sulfonic acid groups, an intermediate therefor, and methods for their production with high productivity, are provided. Also provided are a fluorosulfonyl group-containing polymer obtained by polymerizing such a compound, and a sulfonic acid group-containing polymer obtained from such a polymer. A method for producing a compound of the following formula (m0), such a compound, a fluorosulfonyl group-containing polymer obtained by polymerizing such a compound, and a sulfonic acid group-containing polymer obtained from such a polymer, provided that Ris a single bond or a Cbivalent perfluoro organic group, Ris a Cbivalent perfluoro organic group, and n is 0 or 1.

Fluorosulfonyl group-containing compound, method for its production and polymer thereof

A compound containing two fluorosulfonyl groups which are groups convertible to sulfonic acid groups, an intermediate therefor, and methods for their production with high productivity, are provided. Also provided are a fluorosulfonyl group-containing polymer obtained by polymerizing such a compound, and a sulfonic acid group-containing polymer obtained from such a polymer. A method for producing a compound of the following formula (m0), such a compound, a fluorosulfonyl group-containing polymer obtained by polymerizing such a compound, and a sulfonic acid group-containing polymer obtained from such a polymer, provided that Ris a single bond or a Cbivalent perfluoro organic group, Ris a Cbivalent perfluoro organic group, and n is 0 or 1: 

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Chiyoda-ku, Japan

Jyunichi Tayanagi