公开(公告)号：US10435556B2

公开(公告)日：2019-10-08

申请号：US15578689

申请日：2017-02-24

申请人： KINGFA SCI. & TECH. CO., LTD. ,  ZHUHAI WANGO CHEMICAL CO., LTD. ,  TIANJIN KINGFA NEW MATERIAL CO., LTD.

发明人： Changli Lu ,  Zhimin Yuan ,  Tongmin Cai ,  Xianbo Huang ,  Xiangbin Zeng ,  Jian Jiao ,  Renxu Yuan ,  Yuke Zhong ,  Kai Xiong ,  Hui Yang ,  Kaijin Mai ,  Xueteng Dong

IPC分类号： C08L67/02 ,  C08K5/1535 ,  C08K5/156 ,  C08L25/14 ,  C08L67/04

摘要： A biodegradable polyester composition based on a total weight of the biodegradable polyester composition, including a weight content of a cyclic ester compound having a structure shown as formula (I) which is 100 ppm-950 ppm; and based on the total weight of the biodegradable polyester composition, a weight content of tetrahydrofuran is 3 ppm-200 ppm is provided. The cyclic ester compound and tetrahydrofuran is added into the composition and controlling the content of the cyclic ester compound and the content of tetrahydrofuran in a certain range in the composition to realize an anti-thermal oxidative aging property of the biodegradable polyester composition. In addition, a film is prepared by blow molding or a part is prepared by injection molding after being digested with 95% ethanol at 40° C. for 240 hours.