| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a soluble polyimide which exhibits solubility to organic solvent and has high mechanical strength as well as excellent heat resistance and light transmissibility, a method for producing the same, a vanish and a polyimide film. <P>SOLUTION: The soluble polyimide includes: (1) 1-80 mol% of a structural unit in which two imide-aromatic ring condensed rings are connected through one bond selected from the group consisting of ether bond, alkylene group, fluorenylene group, sulfonyl group and ketone bond; and (2) 20-99 mol% of a structural unit in which two imide-aromatic ring condensed rings are connected through carbon-carbon bond. <P>COPYRIGHT: (C)2013,JPO&INPIT</p> |
