| 摘要 |
PROBLEM TO BE SOLVED: To provide a polyester film that is excellent in hydrolysis resistance, is excellent in film thickness uniformity, and further is excellent in adhesiveness to a functional layer after experiencing moisture and heat when used as a backsheet for solar cell module.SOLUTION: A polyester film comprises (A) a polyester and (B) an aromatic carbodiimide. The (B) aromatic carbodiimide contains at least one carbodiimide group adjacent to an aromatic ring and further contains at least one selected from a carboxamide group, a sulfonamide group, an amide phosphate group, a hydroxyl group, and an amino group. |
