| 摘要 |
PURPOSE:To obtain a biaxially stretched polyester film excellent in electrostatic property and surface flatness by adding an alkylphenylether sulfoacetate and/or a di(alkylphenylether) sulfosuccinate to polyester. CONSTITUTION:100pts.wt. polyester having ethylene terephthalate units as main repeating units is mixed with 0.1-10pts.wt. an alkylphenylether sulfoacetate (a) of the formula I and/or a di(alkylphenylether)sulfosuccinate (b) of the formula II, where R is an alkyl group, (m) is 0 or integer of 1-5, and (n) is integer of 1- 10. The resin composition is melted and extruded by T-die method, inflation method, etc., and the molding is further biaxially concurrently or in order to form a biaxially stretched film which is in turn thermally fixed. |
