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公开(公告)号：US20060079709A1
公开(公告)日：2006-04-13
申请号：US11243174
申请日：2005-10-04
申请人： Christoph Gurtler , Jorg Kirchhoff , Ido Schwarz
发明人： Christoph Gurtler , Jorg Kirchhoff , Ido Schwarz
IPC分类号： C07C237/18 , C07C69/74
CPC分类号： C07C67/313 , C07C2601/08 , C07C69/757
摘要： The present invention provides a process for preparing cyclic 1,3-keto esters in the absence of solvent, using solid-state or high viscosity reactors.
摘要翻译： 本发明提供了使用固态或高粘度反应器在不存在溶剂的情况下制备环状1,3-酮酯的方法。
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公开(公告)号：US20050239996A1
公开(公告)日：2005-10-27
申请号：US11105680
申请日：2005-04-14
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。
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公开(公告)号：US20050239995A1
公开(公告)日：2005-10-27
申请号：US11105678
申请日：2005-04-14
申请人： Jorg Kirchhoff , Thomas Konig , Klemens Kohlgruber , Steffen Kuhling , Melanie Mothrath , Dirk Meirvenne
发明人： Jorg Kirchhoff , Thomas Konig , Klemens Kohlgruber , Steffen Kuhling , Melanie Mothrath , Dirk Meirvenne
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
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