公开(公告)号：KR1020140065278A

公开(公告)日：2014-05-29

申请号：KR1020120132597

申请日：2012-11-21

Applicant: 롯데정밀화학 주식회사

Inventor： 김희수 ,  김예진 ,  최수연 ,  김민경 ,  윤기철

IPC: C08G63/78 ,  C08G63/16 ,  C08L67/02

CPC classification number: C08G63/127 ,  C08G63/20 ,  C08G63/78

Abstract: Disclosed are a method for preparing a polyester copolymer and a polyester copolymer prepared thereby. A biodegradable polyester copolymer which is disclosed comprises: a prepolymerization step of producing a prepolymer by polymerizing a dicarboxylic acid compound (A), a diol compound (B) and an aromatic branching agent (C) at 160-220°C; and a step of polycondensing the prepolymer at 200-250°C in a vacuum state of 0.1-2 torr.

Abstract translation: 公开了由此制备聚酯共聚物和聚酯共聚物的方法。 公开的可生物降解的聚酯共聚物包括：通过在160-220℃下聚合二羧酸化合物（A），二醇化合物（B）和芳香族支化剂（C）来制备预聚物的预聚合步骤; 以及在0.1-2托的真空状态下将预聚物缩聚在200-250℃的步骤。