| abstract |
PROBLEM TO BE SOLVED: To provide a polyester composition which is excellent in heat resistance and has few foreign substances, and particularly suitable for application to magnetic materials and capacitors. SOLUTION: Polyester (A) and polyimide (B) And a terminal cross-linking agent (C), the carboxyl terminal group amount is 1 to 45 equivalent / 10 6 g, and the metal content is 3 to 45 equivalents. The polyester composition is 0 ppm. |