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：US10746676B2

公开(公告)日：2020-08-18

申请号：US16318637

申请日：2016-12-19

Applicant: SABIC GLOBAL TECHNOLOGIES B.V.

Inventor： Rahul Patil ,  Shankar Kollengodu Subramanian ,  James Franklin Hoover ,  Guangxin Lin

IPC: C08G63/64 ,  G01N24/08 ,  C08G63/91 ,  C08G64/16 ,  C08G64/24 ,  C08G64/42 ,  G01N33/44 ,  C08G63/79

Abstract: An interfacial process for preparing a poly(aliphatic ester-carbonate) includes providing an initial polymerization reaction mixture comprising an aliphatic C6-20 dicarboxylic acid, a bisphenol, an alkali hydroxide, and optionally a catalyst in a solvent system comprising water and an immiscible organic solvent, adding an initial portion of a carbonyl dihalide over a first time period while maintaining the reaction at a first pH from 7 to 8; and adding a second portion of the carbonyl dihalide over a second, subsequent time period while maintaining the reaction pH at a second pH from 9 to 12, to provide a product polymerization mixture, wherein the amount of alkali hydroxide in the initial polymerization reaction mixture is effective to increase the fraction of the first time period at a measured pH of 7 to 8 compared to the same reaction mixture with a higher amount of alkali hydroxide in the initial polymerization mixture.

公开(公告)号：US20190169376A1

公开(公告)日：2019-06-06

申请号：US16313389

申请日：2017-06-27

Applicant: SABIC Global Technologies B.V.

Inventor： Christopher Luke Hein ,  Franklin Ehrensbeck ,  Brett D. Ermi ,  Bing Zhou ,  Guangxin Lin ,  Roger W. Hurst

IPC: C08J3/22 ,  C08L69/00 ,  C08L27/18 ,  B29C48/27

Abstract: The disclosure concerns compositions and methods to improve remote phosphor optical properties in polycarbonate. One method includes combining a phosphor component and a polycarbonate component to form a phosphor-polycarbonate composition; and at a fixed phosphor concentration, combining the phosphor-polycarbonate composition with a diffusing agent comprising polytetrafluoroethylene (PTFE), wherein the diffusing agent diffuses light, and wherein the phosphor-polycarbonate composition exhibits an increase in chromaticity coordinate (CIEx) as determined by CIE 1931 or increase in CIE 1976 (u′,v′) of at least about 5% relative to a substantially similar reference composition in the absence of PTFE. Also described are methods to increase yield and reduce product accumulation of an extruded thermoplastic polycarbonate composition through the mixing of PTFE with a phosphor-polycarbonate (PCP) to form a PCP-PTFE component as well as a method forming a phosphor-polycarbonate master batch (PPCMB) composition, and during extrusion, adding PTFE to the PPCMB composition to form a PPCMB-PTFE composition.