| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a sulfonic acid group-containing fluorinated polyimide which has excellent characteristics such as heat resistance, acid resistance, boiling water resistance and free radical resistance and is suitable for various uses such as fuel battery electrolytic membranes and the like, to provide a resin composition comprising the sulfonic acid group-containing fluorinated polyimide, and to provide an ion conductor comprising the sulfonic acid group-containing fluorinated polyimide. <P>SOLUTION: This sulfonic acid group-containing fluorinated polyimide is characterized by polymerizing a raw material consisting essentially of a fluorinated aromatic ring-having acid dianhydride and a sulfonic acid group-having diamine. The ion conductor is characterized by comprising the sulfonic acid group-containing fluorinated polyimide or a specific resin composition. <P>COPYRIGHT: (C)2005,JPO&NCIPI |
