| 摘要 |
PROBLEM TO BE SOLVED: To provide a biaxially oriented polyester film having excellent heat resistance, low uneven thickness and is especially preferably applied to uses as a magnetic material or a capacitor. SOLUTION: The biaxially oriented polyester film comprises (A) polyester and (B) polyimide and has uneven thickness of 0-15%, melt specific resistance of 1×107-1×1010Ω.cm and intrinsic viscosity of 0.5-0.8 dl/g. |
