| 摘要 |
PROBLEM TO BE SOLVED: To provide a hydrolysis-resistance polyester film that suppresses a rise in acid value during film molding and achieves a low acid value.SOLUTION: A hydrolysis-resistance polyester film comprises 0.03-1.5 equivalent/tons of a hindered phenol structural unit in a polyester resin composition constituting the film, wherein polyester constituting the film has an acid number less than 11 equivalent/tons and an inherent viscosity more than 0.64 dL/g and 0.90 dL/g or less. |
