| 摘要 |
PROBLEM TO BE SOLVED: To provide a solvent-soluble polyimide resin excellent in colorless transparency.SOLUTION: A polyimide resin to be used is obtained by imidation polymerization reaction of bicyclo[4.2.0]octane-3,3,7,8-tetracarboxylic acid dianhydride, an alicyclic type diamine compound and an aliphatic ether diamine compound, in which the mole ratio between the alicyclic diamine compound and the aliphatic ether diamine compound is in a range of 50 to 95:50 to 5, and the total of the diamine compounds is in a range of 90 to 110, in mole ratio, based on 100 of the tetracarboxylic acid dianhydride. |
