申请人:TEIJIN LIMITED
公开号:EP1426395A1
公开(公告)日:2004-06-09
A polyester based on poly(trimethylene terephthalate) consisting essentially of trimethylene terephthalate repeating units, comprising at least one kind of compound selected from the group consisting of alkali metal compounds, alkaline earth metal compounds and manganese compounds in an amount of 10 to 150 ppm expressed in terms of the metal element in a molar ratio of the total amount of elements of the contained alkali metal elements, alkaline earth metal elements and manganese element to the amount of the contained phosphorus element within the range of the following formula (I):
0≦P/M≦1 (I)
wherein, P is the molar amount of the phosphorus element in the polyester; M is the total amount of the alkali metal elements, alkaline earth metal elements and manganese element.
一种基于聚对苯二甲酸三亚甲基酯的聚酯,主要由对苯二甲酸三亚甲基酯重复单元组成,含有至少一种从碱金属化合物、碱土金属化合物和锰化合物组成的组中选出的化合物,以所含碱金属元素、碱土金属元素和锰元素的总量与所含磷元素的摩尔比表示的金属元素量为 10 至 150 ppm,其范围如下式(I)所示:
0≦P/M≦1 (I)
其中,P 为聚酯中磷元素的摩尔量;M 为碱金属元素、碱土金属元素和锰元素的总量。