公开(公告)号：US20230348668A1

公开(公告)日：2023-11-02

申请号：US17796525

申请日：2021-02-09

Applicant: SABIC GLOBAL TECHNOLOGIES B.V.

Inventor： Shivakumar Konda ,  Chelsea Schmidt ,  Indira Jyothi Polasa ,  Jordi Calveras ,  Thomas Paul Kanjirathadathil

IPC: C08G64/10 ,  C08L69/00 ,  C08G64/24

CPC classification number: C08G64/10 ,  C08G64/24 ,  C08L69/00 ,  C08L2207/20

Abstract: The present invention relates to a method for the manufacture of a (co)polycarbonate comprising reacting tetrabromo bisphenol A and optionally one or more bisphenol comonomer(s) with phosgene wherein the tetrabromo bisphenol A contains an amount of tetrabromo bisphenol A dimer of at most 3.0 wt.% based on the weight of the tetrabromo bisphenol A, determined after heat treating the tetrabromo bisphenol A at a temperature of 260° C. for a period of 15 minutes.