公开(公告)号：US20240239986A1

公开(公告)日：2024-07-18

申请号：US18414890

申请日：2024-01-17

Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE

Inventor： Che-Tseng LIN ,  Meng-Hsin CHEN ,  Jen-Chun CHIU ,  Kai-Chuan KUO ,  Yu-Lin CHU ,  Po-Hsien HO ,  Ke-Hsuan LUO ,  Chih-Hsiang LIN ,  Hui-Ching HSU

IPC: C08J11/24 ,  C08G63/183 ,  C09J167/02

CPC classification number: C08J11/24 ,  C08G63/183 ,  C09J167/02 ,  C08J2367/02

Abstract: A copolyester is formed by copolymerizing a depolymerized polyester and succinic acid. The depolymerized polyester includes depolymerized polyethylene terephthalate (PET), and the depolymerized PET is formed by depolymerizing PET with ethylene glycol. The repeating unit of PET and the succinic acid have a molar ratio of 40:60 to 50:50. The repeating unit of PET and the ethylene glycol have a molar ratio of 100:100 to 100:500. The copolyester has a storage modulus of 1*104 Pa to 1*106 Pa at 80° C. The copolyester can be used in a hot melt adhesive.