公开(公告)号：US20240417527A1

公开(公告)日：2024-12-19

申请号：US18022474

申请日：2021-09-17

Applicant: KOREA RESEARCH INSTITUTE OF CHEMICAL TECHNOLOGY

Inventor： Joungmo CHO ,  Dinh Duong PHAM ,  Thi Hong Ngan LE

IPC: C08J11/24 ,  C08J11/16

Abstract: The present disclosure relates to a method of polymerizing a polymer having an ester functional group, a catalyst for use in the method, and a composition for use in the method. More specifically, proposed is a method of depolymerizing a polymer having an ester functional group by using potassium carbonate (K2CO3) as a depolymerization catalyst and an alcohol and a polar aprotic solvent as solvents. In addition, a composition for depolymerizing a polymer having an ester functional group is proposed.

公开(公告)号：US20240166590A1

公开(公告)日：2024-05-23

申请号：US18284486

申请日：2022-04-12

Applicant: KOREA RESEARCH INSTITUTE OF CHEMICAL TECHNOLOGY

Inventor： Joungmo CHO ,  Tae Hun KIM ,  Dinh Duong PHAM

IPC: C07C67/02

CPC classification number: C07C67/02

Abstract: The present disclosure relates to a method for producing a terephthalate derivative from dimethyl terephthalate. The present disclosure provides an efficient and economic method for producing a terephthalate derivative from dimethyl terephthalate in high yield by optimizing reaction conditions, selecting optimum transesterification reaction catalysts, and simplifying processes.