| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a high polymer film for a non-fluorine fuel cell having high proton conductivity, which is usable as a film for a solid high polymer fuel cell, and material for that. <P>SOLUTION: The purpose is achieved by this high polymer film comprising ester cyanate resin comprising proton conductive groups (sulfonic acid groups sulfonated with a sulfonating agent as at least one kind selected out of a group of chlorosulfonic acid, sulfur trioxide - triethyl phosphate, concentrated sulfuric acid, fuming sulfuric acid, and trimethylsilyl chlorosulfate, preferably). <P>COPYRIGHT: (C)2003,JPO |
