公开(公告)号：US11001709B2

公开(公告)日：2021-05-11

申请号：US16479787

申请日：2017-05-05

Applicant: SABIC GLOBAL TECHNOLOGIES B.V.

Inventor： Christopher Luke Hein ,  Rahul Patil ,  Bing Zhou ,  Guangxin Lin ,  Chelsea Schmidt ,  David Zoller ,  Shuailei Ma ,  Chester Hassman

IPC: C08L69/00 ,  C08G63/64 ,  C08G77/448 ,  C08K5/053 ,  C08K5/08 ,  C08K5/09 ,  C08K5/13 ,  C08L83/10

Abstract: A polycarbonate copolymer contains aromatic carbonate units; optionally siloxane units; and resorcinol arylate ester units. The resorcinol arylate ester units of the polycarbonate copolymer are derived from a resorcinol composition having a hydroquinone content of 50 to 1200 parts per million, a catechol content of 5 to 29 parts per million, and a phenol content of 0 to 2400, each as determined by high performance liquid chromatography, and further comprising an acid stabilizer.

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.