| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a hydrolysis-resistant polyester film which has a low acid value due to suppressed acid-value increase during film formation. <P>SOLUTION: The hydrolysis-resistant polyester film is characterized in that the polyester resin composition that forms the film contains 0.03 to 6.7 eq/ton of hindered phenol structural units, while the acid value of the polyester that forms the film is less than 25 eq/ton, and the intrinsic viscosity of the polyester that forms the film is greater than 0.64 dL/g but equal to or less than 0.90 dL/g. <P>COPYRIGHT: (C)2012,JPO&INPIT |
