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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
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.
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公开(公告)号：US20190135966A1
公开(公告)日：2019-05-09
申请号：US16096879
申请日：2017-04-13
Applicant: SABIC Global Technologies B.V.
Inventor： Stephan Moyses , Chester Hassman , Dejin Li , Jianhua Xu
IPC: C08F279/04 , C08F2/02 , C08F2/06 , C08F6/06
Abstract: The present invention relates to a process for the production of copolymers comprising: (i) forming a reaction mixture comprising an elastomer and a vinyl aromatic compound; (ii) introducing the reaction mixture to a reaction vessel; and (iii) performing a polymerisation reaction wherein steps (i)-(iii) are performed in that order to obtain a copolymer comprising: (a) a phase comprising a reaction product of the elastomer with the vinyl aromatic compound; and (b) a phase comprising a reaction product of the vinyl aromatic compound wherein a sample of the reactor contents is obtained during step (iii) to determine of the formed copolymer: the content of phase (b); and/or●the molecular weight of phase (b) wherein the determination of the content of phase (b) in the formed copolymer and the molecular weight of phase (b) is performed by a method comprising isolation of phase (b) from the sample of the formed copolymer and subjecting the obtained phase (b) to molecular analysis. Such process allows for the determination of the content N of the phase (b) and of the molecular weight thereof in a quick and efficient manner, allowing for adjustment of process parameters such that the production of products that not correspond to the desired product quality is minimised.
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公开(公告)号：US10882940B2
公开(公告)日：2021-01-05
申请号：US16096879
申请日：2017-04-13
Applicant: SABIC Global Technologies B.V.
Inventor： Stephan Moyses , Chester Hassman , Dejin Li , Jianhua Xu
IPC: C08F279/04 , C08F2/02 , C08F2/06 , C08F6/06
Abstract: The present invention relates to a process for the production of copolymers comprising: (i) forming a reaction mixture comprising an elastomer and a vinyl aromatic compound; (ii) introducing the reaction mixture to a reaction vessel; and (iii) performing a polymerisation reaction wherein steps (i)-(iii) are performed in that order to obtain a copolymer comprising: (a) a phase comprising a reaction product of the elastomer with the vinyl aromatic compound; and (b) a phase comprising a reaction product of the vinyl aromatic compound wherein a sample of the reactor contents is obtained during step (iii) to determine of the formed copolymer: the content of phase (b); and/or ● the molecular weight of phase (b) wherein the determination of the content of phase (b) in the formed copolymer and the molecular weight of phase (b) is performed by a method comprising isolation of phase (b) from the sample of the formed copolymer and subjecting the obtained phase (b) to molecular analysis. Such process allows for the determination of the content of the phase (b) and of the molecular weight thereof in a quick and efficient manner, allowing for adjustment of process parameters such that the production of products that not correspond to the desired product quality is minimised.
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