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    Process for the production of polycarbonate
    5.
    发明申请
    Process for the production of polycarbonate 有权
    聚碳酸酯生产工艺

    公开(公告)号：US20050239996A1

    公开(公告)日：2005-10-27

    申请号：US11105680

    申请日：2005-04-14

    申请人： Jorg Kirchhoff ,  Thomas Konig ,  Klemens Kohlgruber ,  Steffen Kuhling ,  Dirk Van Meirvenne

    发明人： Jorg Kirchhoff ,  Thomas Konig ,  Klemens Kohlgruber ,  Steffen Kuhling ,  Dirk Van Meirvenne

    IPC分类号： C08F6/10 ,  C08G64/20 ,  C08G64/40 ,  C08G64/00

    CPC分类号： C08G64/403 ,  C08G64/205

    摘要： A process for the isolation of polycarbonate produced by the interfacial polymerization process is disclosed. Accordingly, the process entails (a) evaporating the organic solvent from the solution that contains solvent and polycarbonate to obtain a material system that contains 90 to 99.95% polycarbonate, the percent being relative to the weight of the system, and (b) passing the material system through inlet openings of a separating vessel to obtain a plurality of streams of polycarbonate, on entry into the inlet openings said material system being supersaturated with volatile constituents to an extent of at least 1 bar and having a temperature of 250° to 340° C. and a flow rate of 0.1 to 20 kg/hour, and (c) degassing the streams in the separating vessel wherein the pressure is 0.1 to 20 mbar to effect degassing of the polycarbonate.

    摘要翻译： 公开了通过界面聚合方法分离聚碳酸酯的方法。 因此，该方法需要（a）从含有溶剂和聚碳酸酯的溶液中蒸发有机溶剂以获得含有90至99.95％聚碳酸酯的材料体系，其百分数相对于体系重量，和（b）使 材料系统通过分离容器的入口开口，以获得多个聚碳酸酯流，在进入入口时，所述材料体系用挥发性成分过饱和至少1巴，温度为250°至340° 并且流速为0.1至20kg /小时，和（c）使分离容器中的气流脱气，其中压力为0.1至20毫巴，以实现聚碳酸酯脱气。

    Method of producing polycarbonates
    7.
    发明授权
    Method of producing polycarbonates 失效
    生产聚碳酸酯的方法

    公开(公告)号：US06835798B1

    公开(公告)日：2004-12-28

    申请号：US10111925

    申请日：2002-08-05

    申请人： Michael Bödiger ,  Steffen Kühling ,  Franky Bruynseels ,  Dirk van Meirvenne ,  René de Cleyn

    发明人： Michael Bödiger ,  Steffen Kühling ,  Franky Bruynseels ,  Dirk van Meirvenne ,  René de Cleyn

    IPC分类号： C08G6400

    CPC分类号： C08G64/24 ,  G11B7/2534

    摘要： A process for the preparation of polycarbonate by the phase boundary process is disclosed. The process entails reacting at least one dihydroxydiarylalkane in the form of its alkali metal salts with phosgene in the heterogeneous phase in the presence of sodium hydroxide solution and an organic solvent. The process is characterized in that the feedstock have but low content of Fe, Cr, Ni, Zn, Ca, Mg, Al metals or homologues thereof, and in that the organic solvent is separated off, and in that the polycarbonate which is obtained is worked up. The resulting polycarbonate is particularly useful in producing transparent shaped articles.

    摘要翻译： 公开了通过相边界法制备聚碳酸酯的方法。 该方法需要在氢氧化钠溶液和有机溶剂的存在下使至少一种其碱金属盐形式的二羟基二芳基烷烃与光气在非均相中反应。 该方法的特征在于，原料具有Fe，Cr，Ni，Zn，Ca，Mg，Al金属或其同系物的含量低，并且分离出有机溶剂，并且得到的聚碳酸酯是 工作了。 所得聚碳酸酯特别可用于制造透明成型制品。

    Process for the production of polycarbonate
    8.
    发明授权
    Process for the production of polycarbonate 有权
    聚碳酸酯生产工艺

    公开(公告)号：US07129315B2

    公开(公告)日：2006-10-31

    申请号：US11105680

    申请日：2005-04-14

    申请人： Jörg Kirchhoff ,  Thomas König ,  Klemens Kohlgrüber ,  Steffen Kühling ,  Dirk Van Meirvenne

    发明人： Jörg Kirchhoff ,  Thomas König ,  Klemens Kohlgrüber ,  Steffen Kühling ,  Dirk Van Meirvenne

    IPC分类号： C08G64/00

    CPC分类号： C08G64/403 ,  C08G64/205

    摘要： A process for the isolation of polycarbonate produced by the interfacial polymerization process is disclosed. Accordingly, the process entails (a) evaporating the organic solvent from the solution that contains solvent and polycarbonate to obtain a material system that contains 90 to 99.95% polycarbonate, the percent being relative to the weight of the system, and (b) passing the material system through inlet openings of a separating vessel to obtain a plurality of streams of polycarbonate, on entry into the inlet openings said material system being supersaturated with volatile constituents to an extent of at least 1 bar and having a temperature of 250° to 340° C. and a flow rate of 0.1 to 20 kg/hour, and (c) degassing the streams in the separating vessel wherein the pressure is 0.1 to 20 mbar to effect degassing of the polycarbonate.

    摘要翻译： 公开了通过界面聚合方法分离聚碳酸酯的方法。 因此，该方法需要（a）从含有溶剂和聚碳酸酯的溶液中蒸发有机溶剂以获得含有90至99.95％聚碳酸酯的材料体系，其百分数相对于体系重量，和（b）使 材料系统通过分离容器的入口开口，以获得多个聚碳酸酯流，在进入入口时，所述材料体系用挥发性成分过饱和至少1巴，温度为250°至340° 并且流速为0.1至20kg /小时，和（c）使分离容器中的气流脱气，其中压力为0.1至20毫巴，以实现聚碳酸酯脱气。

    Process for the preparation of polycarbonate
    9.
    发明授权
    Process for the preparation of polycarbonate 有权
    制备聚碳酸酯的方法

    公开(公告)号：US07091302B2

    公开(公告)日：2006-08-15

    申请号：US11105678

    申请日：2005-04-14

    申请人： Jörg Kirchhoff ,  Thomas König ,  Klemens Kohlgrüber ,  Steffen Kühling ,  Melanie Möthrath ,  Dirk Van Meirvenne

    发明人： Jörg Kirchhoff ,  Thomas König ,  Klemens Kohlgrüber ,  Steffen Kühling ,  Melanie Möthrath ,  Dirk Van Meirvenne

    IPC分类号： C08G64/00

    CPC分类号： C08G64/205 ,  C08G64/307

    摘要： The invention describes a process for the preparation of polycarbonate. The process includes (a) transesterifying at least one aromatic dihydroxyaryl compound and a diaryl carbonate in the melt in the presence of a catalyst, (b) mixing the melt obtained in step (a) with a foaming agent (c) passing the mixture at 250 to 340° C. through inlet openings of a separating vessel at a rate of 0.1 to 20 kg/hour, to obtain a plurality of streams of foamed polycarbonate and degassing the streams of foamed polycarbonate in the separating vessel wherein the pressure is 0.1 to 20 mbar.

    摘要翻译： 本发明描述了制备聚碳酸酯的方法。 该方法包括（a）在催化剂存在下，在熔体中将至少一种芳族二羟基芳基化合物和碳酸二芳基酯酯交换反应，（b）将步骤（a）中获得的熔体与通过该混合物的发泡剂（c） 通过分离容器的入口开口以0.1至20kg /小时的速度通过入口开口250至340℃，以获得多个发泡聚碳酸酯流并在分离容器中对发泡聚碳酸酯流进行脱气，其中压力为0.1至 20毫巴