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    Thermal enhancement of the purification process for interfacial polycarbonate and copolymer polycarbonates
    4.
    发明授权
    Thermal enhancement of the purification process for interfacial polycarbonate and copolymer polycarbonates 有权

    公开(公告)号：US09617380B2

    公开(公告)日：2017-04-11

    申请号：US14907369

    申请日：2014-07-25

    Applicant: SABIC Global Technologies B.V.

    Inventor： William E. Hollar, Jr. ,  Zeljko Kuzeljevic ,  Mohan Khadilkar ,  Donald Paciorkowski

    IPC: C08G64/00 ,  C08G64/40 ,  C08G63/06

    CPC classification number: C08G64/403 ,  C08G64/406

    Abstract: In an embodiment, a process of purifying a polycarbonate comprises: polymerizing a dihydroxy compound and a carbonate source via an interfacial reaction in the presence of a catalyst to form a product mixture comprising an aqueous phase and an organic phase, wherein the organic phase comprises the polycarbonate, the catalyst, ions, and a solvent having a boiling point Tb; heating the product mixture to greater than or equal to Tb; separating the aqueous phase and the organic phase at a temperature greater than or equal to Tb to form a separated organic phase and a separated aqueous phase; extracting the catalyst from the separated organic phase; and extracting the ions from the separated organic phase; wherein if a centrifuge is used in the extracting of the catalyst, the extracting of the ions, or both, the process further comprises cooling a stream entering the centrifuge to less than Tb.

    Process for the purification of polycarbonate
    6.
    发明授权
    Process for the purification of polycarbonate 有权

    公开(公告)号：US09617382B2

    公开(公告)日：2017-04-11

    申请号：US14907354

    申请日：2014-07-25

    Applicant: SABIC Global Technologies B.V.

    Inventor： William E. Hollar, Jr. ,  Pankaj Singh Gautam ,  Mohan Khadilkar ,  Zeljko Kuzeljevic

    IPC: C08G64/00 ,  C08G64/40

    CPC classification number: C08G64/406

    Abstract: In an embodiment, a process of purifying a polycarbonate from an interfacial polymerization product mixture comprising an aqueous phase and an organic phase comprising a first organic solvent, the polycarbonate, a catalyst, and ions, the process comprises: separating the aqueous phase and the organic phase to form a separated aqueous feed stream and a separated organic stream; extracting the catalyst and the ions from the separated organic stream to form a purified polycarbonate stream and an extracted aqueous feed stream, wherein at least one of the separated aqueous feed stream and the extracted aqueous feed stream comprise an organic portion and an aqueous portion; purifying an aqueous stream comprising one or both of the separated aqueous feed stream and the extracted aqueous feed stream by adjusting a viscosity of the organic portion to be less than or equal to 40 centipoise by adding a second organic solvent to the aqueous stream to form a combined stream; optionally, adjusting a ratio of the aqueous portion to the organic portion to 1.0 to 20.0 by adding an aqueous solution to the aqueous stream; and separating the combined stream to form a purified aqueous stream, wherein less than or equal to 3 vol % of the purified aqueous stream is the organic portion.

    THERMAL ENHANCEMENT OF THE PURIFICATION PROCESS FOR INTERFACIAL POLYCARBONATE AND COPOLYMER POLYCARBONATES
    7.
    发明申请
    THERMAL ENHANCEMENT OF THE PURIFICATION PROCESS FOR INTERFACIAL POLYCARBONATE AND COPOLYMER POLYCARBONATES 有权
    界面聚碳酸酯和共聚聚碳酸酯的纯化工艺的热增强

    公开(公告)号：US20160177029A1

    公开(公告)日：2016-06-23

    申请号：US14907369

    申请日：2014-07-25

    Applicant: SABIC Global Technologies B.V.

    Inventor： William E. Hollar, JR. ,  Zeljko Kuzeljevic ,  Mohan Khadilkar ,  Donald Paciorkowski

    IPC: C08G64/40

    CPC classification number: C08G64/403 ,  C08G64/406

    Abstract: In an embodiment, a process of purifying a polycarbonate comprises: polymerizing a dihydroxy compound and a carbonate source via an interfacial reaction in the presence of a catalyst to form a product mixture comprising an aqueous phase and an organic phase, wherein the organic phase comprises the polycarbonate, the catalyst, ions, and a solvent having a boiling point Tb; heating the product mixture to greater than or equal to Tb; separating the aqueous phase and the organic phase at a temperature greater than or equal to Tb to form a separated organic phase and a separated aqueous phase; extracting the catalyst from the separated organic phase; and extracting the ions from the separated organic phase; wherein if a centrifuge is used in the extracting of the catalyst, the extracting of the ions, or both, the process further comprises cooling a stream entering the centrifuge to less than Tb.

    Abstract translation: 在一个实施方案中，纯化聚碳酸酯的方法包括：在催化剂存在下通过界面反应聚合二羟基化合物和碳酸酯源，以形成包含水相和有机相的产物混合物，其中有机相包含 聚碳酸酯，催化剂，离子和沸点为Tb的溶剂; 将产物混合物加热至大于或等于Tb; 在大于或等于Tb的温度下分离水相和有机相以形成分离的有机相和分离的水相; 从分离的有机相中提取催化剂; 并从分离的有机相中提取离子; 其中如果在提取催化剂中使用离心机，则提取离子或两者，该方法还包括将进入离心机的流冷却至小于Tb。

    LOW SHEAR PROCESS FOR POLYCARBONATE PURIFICATION
    8.
    发明申请
    LOW SHEAR PROCESS FOR POLYCARBONATE PURIFICATION 有权
    用于聚碳酸酯净化的低剪切工艺

    公开(公告)号：US20160168322A1

    公开(公告)日：2016-06-16

    申请号：US14907349

    申请日：2014-07-25

    Applicant: SABIC Global Technologies B.V.

    Inventor： Pankaj Singh Gautam ,  Zeljko Kuzeljevic ,  William E. Hollar ,  Mohan Khadilkar

    IPC: C08G64/40 ,  C08G64/24

    CPC classification number: C08G64/406 ,  C08G64/24

    Abstract: In another embodiment, a process of purifying an interfacially polymerized polycarbonate from a feed comprising an aqueous phase and an organic phase comprising an organic solvent, the interfacially polymerized polycarbonate, a catalyst, and ions, can comprise: separating the aqueous phase and the organic phase from the feed, wherein during the separating the feed is subjected to at least one of: energy of less than or equal to 0.5 kJ/kg of feed, a shear rate of less than 150,000 S−1, and centrifugal forces of 100 to 2,000 g-force; to form a purified aqueous phase and a purified organic phase comprising a purified polycarbonate.

    Abstract translation: 在另一个实施方案中，从包含水相和包含有机溶剂，界面聚合的聚碳酸酯，催化剂和离子的有机相的进料中纯化界面聚合的聚碳酸酯的方法可以包括：将水相和有机相分离 其中在分离期间，进料经受以下中的至少一种：小于或等于0.5kJ / kg进料的能量，小于150,000S-1的剪切速率和100至2,000的离心力 g力 以形成纯化的水相和包含纯化的聚碳酸酯的纯化的有机相。

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