The mono or biaxially oriented polyester film of the present invention having improved flame-retardancy and processibility comprises a polyester resin having an intrinsic viscosity of 0.4 to 0.9 dl/g which contains, in its polyester chain derived from dicarboxylic acid and diol components, an incorporated repeat unit of formula (I) in an amount of 10 to 30 mol % based on the amount of dicarboxylic acid, and a flame-retardancy enhancing agent in an amount ranging from 0.05 to 5% by weight based on the weight of the polyester resin.
本发明的单向或双向拉伸聚酯薄膜具有更好的阻燃性和加工性,它包括一种本征粘度为 0.4 至 0.9 dl/g 的聚酯
树脂。9 dl/g 的聚酯
树脂,其聚酯链由二
羧酸和二元醇组分组成,其中含有式(I)的掺合重复单元,其含量为二
羧酸含量的 10 至 30 摩尔%,以及阻燃增强剂,其含量为聚酯
树脂重量的 0.05 至 5%。