This invention provides a novel polymerization catalyst other than antimony compounds, polyester produced by using the same and a process for producing polyester. The polycondensation catalyst of this invention is a polyester polymerization catalyst comprising an aluminum compound and a phosphorus compound having a specific structure. Further, this invention relates to polyester produced by using this polyester polymerization catalyst and a process for producing polyester. Further, this invention relates to fibers, films and hollow molded articles mprising the polyester.
本发明提供了一种新型聚合催化剂,除了
锑化合物外,还提供了由该催化剂制备的聚酯以及制备聚酯的方法。本发明的聚酯缩聚催化剂是一种聚酯聚合催化剂,包括一种铝化合物和一种具有特定结构的
磷化合物。此外,本发明还涉及使用该聚酯聚合催化剂制备的聚酯和制备聚酯的方法。此外,本发明还涉及由该聚酯制备的纤维、薄膜和空心成型制品。