公开(公告)号：US20190284341A1

公开(公告)日：2019-09-19

申请号：US16270917

申请日：2019-02-08

Applicant: SABIC Global Technologies B.V.

Inventor： Shivakumar Konda ,  Rajesh Chowdhury ,  Indira Jyothi Polasa

IPC: C08G73/06 ,  C07D209/44

Abstract: A thermosetting composition, comprising a 4,4′-(((3-oxo-2-hydrocarbylisoindoline-1,1-diyl)bis(4,1-arylene))bis(oxy)) diphthalonitrile compound of formula (1) wherein R is a C1-12 hydrocarbyl, preferably a C1-6 alkyl or a C6-12 aryl; each occurrence of R2 and R3 is independently a hydrogen, a halogen, or a C1-25 hydrocarbyl, preferably hydrogen or a C1-6 alkyl, more preferably a hydrogen or C1-3 alkyl; and p and q are each independently 0 to 4, preferably 0 or 1, more preferably 0.

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.