公开(公告)号：US20190010278A1

公开(公告)日：2019-01-10

申请号：US15852952

申请日：2017-12-22

Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE

Inventor： Jin-An WU ,  Wen-Chung LIANG ,  Chin-Lang WU ,  Shihn-Juh LIOU

IPC: C08G63/91 ,  C08K5/05 ,  C08J9/00 ,  C08J9/12

CPC classification number: C08G63/916 ,  C08G2101/005 ,  C08J9/0061 ,  C08J9/10 ,  C08J9/122 ,  C08J2201/03 ,  C08J2203/04 ,  C08J2203/06 ,  C08J2205/044 ,  C08J2367/02 ,  C08J2467/02 ,  C08K5/005 ,  C08K5/05 ,  C08K5/13 ,  C08L67/02

Abstract: A branched polymer, a preparation method thereof and a method for preparing a foam are provided. The branched polymer is a transesterification product of a composition, and the composition includes 100 parts by weight of polyethylene terephthalate and 0.5-2.0 parts by weight of polyol. The branched polymer has an inherent viscosity of from 1.2 dL/g to 1.6 dL/g, a number average molecular weight of from 75,000 g/mol to 90,000 g/mol, a polydispersity index from 3.0 to 6.0, a melt index from 0.8 g/10 min to 7.5 g/10 min, a shear viscosity from 800 Pa·s to 1900 Pa·s, and a melt strength from 30 cN to 80 cN.