| 摘要 |
PROBLEM TO BE SOLVED: To provide a composition for a flexible substrate having an excellent coating film formability and suitable for forming a flexible substrate having an excellent humidity resistance and to provide a flexible substrate having an excellent humidity resistance.SOLUTION: The problem-solving composition for a flexible substrate includes: a polymer selected from the group consisting of polyamic acid, polyimide, and the combination of both and obtained by reacting a mixture including a diamine component and a tetracarboxylic dianhydride component including a bicyclic alicyclic tetracarboxylic dianhydride compound and a fluorine-containing tetracarboxylic dianhydride compound; and a solvent in a state where the utilization ratio of the bicyclic alicyclic tetracarboxylic dianhydride compound and the utilization ratio of the fluorine-containing tetracarboxylic dianhydride compound with respect to the total utilization ratio of the tetracarboxylic dianhydride component are 30-70 mol% and 30-70 mol%, respectively; a flexible substrate formed by the same is also provided. |
