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    Phosgene having low content of carbon tetrachloride
    2.
    发明授权
    Phosgene having low content of carbon tetrachloride 失效
    光气四氯化碳含量低

    公开(公告)号：US06930202B1

    公开(公告)日：2005-08-16

    申请号：US09807851

    申请日：1999-10-12

    申请人： Jürgen Heuser ,  Hermann Kauth ,  Christian Kords

    发明人： Jürgen Heuser ,  Hermann Kauth ,  Christian Kords

    IPC分类号： C01B32/80 ,  C08G64/22 ,  C07C51/58 ,  C07C67/02

    CPC分类号： C08G64/22 ,  C01B32/80

    摘要： A process for producing phosgene having low content of carbon tetrachloride is disclosed. The process entails reacting carbon monoxide with chlorine in the presence of elemental carbon, in a reactor. Critically the temperature of the gas stream emerging from the reactor is restricted to 30 to 80° C. and its pressure, measured directly downstream from said reactor is restricted to 120 to 400 kPaabs. The phosgene thus produced has a content of carbon tetrachloride that is less than 150 ppm.

    摘要翻译： 公开了一种生产低含量四氯化碳的光气的方法。 在反应器中，该过程需要在元素碳的存在下使一氧化碳与氯反应。 从反应器排出的气流的温度至关重要地限制在30至80℃，并且其直接从所述反应器下游测量的压力限制在120至400千帕绝对压力。 如此制得的光气的四氯化碳含量小于150ppm。

    Process for producing polycarbonates
    3.
    发明授权
    Process for producing polycarbonates 失效

    公开(公告)号：US06613868B2

    公开(公告)日：2003-09-02

    申请号：US10118362

    申请日：2002-04-08

    申请人： Hermann Kauth ,  Christian Kords ,  Jürgen Heuser

    发明人： Hermann Kauth ,  Christian Kords ,  Jürgen Heuser

    IPC分类号： C08G6400

    CPC分类号： C08G64/205 ,  C08G64/24

    摘要： A process for the production of polycarbonate is disclosed. The process, representing an improvement over the known interfacial polycondensation process entails introducing into the loop of a circulating reactor that additionally contains, a residence tank, an optional mixer, a pump, and a heat exchanger (i) an organic phase that contains a solvent for polycarbonate and phosgene and (ii) an aqueous phase that contains an aqueous lye solution, a dihydroxy compound and an optional monophenol to form an emulsion. Maintaining specified temperature and process conditions results in polycarbonate resin having good properties and in waste water that are characterized by their purity.

    Process for the preparation of polycarbonates
    5.
    发明授权
    Process for the preparation of polycarbonates 有权
    聚碳酸酯的制备方法

    公开(公告)号：US07071284B2

    公开(公告)日：2006-07-04

    申请号：US10751621

    申请日：2004-01-05

    申请人： Hermann Kauth ,  Christian Kords ,  Jürgen Heuser

    发明人： Hermann Kauth ,  Christian Kords ,  Jürgen Heuser

    IPC分类号： C08G64/00

    CPC分类号： C08G64/24 ,  C08G64/14

    摘要： An improvement in the continuous two-phase interfacial condensation process for preparing polycarbonate is disclosed. In the process that entails at least one diphenol, phosgene, at least one chain terminator, and optionally branching agents and is carried out in the presence of a catalyst the improvement comprising maintaining the concentration of the catalyst at a level of at least 0.012 mol per mol of diphenol.

    摘要翻译： 公开了用于制备聚碳酸酯的连续两相界面缩合方法的改进。 在需要至少一种二酚，光气，至少一种链终止剂和任选的支化剂的方法中，在催化剂存在下进行，其改进包括将催化剂的浓度维持在至少0.012mol / 摩尔二酚。

    Device and method for degassing plastics
    6.
    发明授权
    Device and method for degassing plastics 有权
    塑料脱气装置及方法

    公开(公告)号：US06811294B1

    公开(公告)日：2004-11-02

    申请号：US09937467

    申请日：2001-09-25

    申请人： Thomas Elsner ,  Jürgen Heuser ,  Christian Kords

    发明人： Thomas Elsner ,  Jürgen Heuser ,  Christian Kords

    IPC分类号： B29B748

    CPC分类号： B29C47/767 ,  B29C47/0009 ,  B29C47/762 ,  B29C47/825 ,  C08G64/406

    摘要： An apparatus for degassing plastic materials, e.g., high molecular weight polycarbonate solutions, is described. The apparatus includes a double-shaft extruder having a length-to-diameter ratio of less than or equal to 40, which comprises: (i) two co-rotating and meshing shafts; (ii) an intake opening; and (iii) upstream and downstream portions relative to the intake opening. The shafts of the extruder are designed with a double lead in a degassing zone, and with a triple lead in a pressure build-up zone. Each of the degassing and the pressure build-up zones are down-stream from the intake opening, and the pressure build-up zone is further down-stream than the degassing zone. Also described is a process for degassing plastic materials, which involves providing the described double-shaft co-rotating extruder, into which plastic material is fed, processed and degassed. Entraining agents, such as nitrogen, and other processing additives may be introduced into an extruder during the process of the present invention.

    摘要翻译： 描述了用于对塑料材料（例如高分子量聚碳酸酯溶液）进行脱气的设备。 该设备包括长径比小于或等于40的双轴挤出机，其包括：（i）两个共同旋转和啮合的轴; （ii）进气口; 和（iii）相对于进气口的上游和下游部分。 挤出机的轴设计为具有脱气区域中的双引线，并且在压力增加区域中具有三重引线。 每个脱气和压力积聚区域从进气口向下游，并且压力积聚区域比脱气区域进一步下游。 还描述了一种用于对塑料材料进行脱气的方法，其涉及提供所描述的双轴同向旋转挤出机，塑料进料，加工和脱气。 在本发明的方法中，可将引入剂如氮气和其它加工添加剂引入挤出机中。

    Method for isolating polymers from solutions
    7.
    发明授权
    Method for isolating polymers from solutions 失效
    从溶液中分离聚合物的方法

    公开(公告)号：US06506281B1

    公开(公告)日：2003-01-14

    申请号：US09719891

    申请日：2001-03-02

    申请人： Clemens Casper ,  Jörgen Weinschenck ,  Klemens Kohlgrüber ,  Jürgen Heuser ,  Christian Kords ,  Thomas Elsner

    发明人： Clemens Casper ,  Jörgen Weinschenck ,  Klemens Kohlgrüber ,  Jürgen Heuser ,  Christian Kords ,  Thomas Elsner

    IPC分类号： B01D122

    CPC分类号： B01D3/06 ,  C08G64/406 ,  Y10S159/08 ,  Y10S159/10

    摘要： A process of evaporating a viscous polymer solution is described. The process includes: (a) providing a viscous polymer solution including at least 30 wt. % of solvents and monomers; (b) introducing the viscous polymer solution into a heated helix (5), the heated helix having a vapor exit velocity of 200 to 300 m/s, (a film flow including a two-phase mixture of polymer melt, and solvent vapors and monomer vapors being formed within the helix); (c) forwarding the film flow from helix (5) into a heated vapor separator (6); (d) expanding the two-phase mixture of polymer melt, and solvent vapors and monomer vapors of the film flow within vapor separator (6) at an absolute pressure of 10 mbar to 800 mbar, (a bottom product including a concentrated melt of the polymer is formed within the vapor separator); and (e) withdrawing the bottom product from vapor separator (6). Each of the helix (5) and vapor separator (6) have a separate heating device, and each of heating device independently provides a temperature that is above the softening point of the polymer.

    摘要翻译： 描述蒸发粘性聚合物溶液的方法。 该方法包括：（a）提供粘性聚合物溶液，其包含至少30wt。 ％的溶剂和单体; （b）将粘性聚合物溶液引入加热的螺旋（5）中，加热的螺旋具有200-300m / s的蒸气出口速度（包括聚合物熔体和溶剂蒸气的两相混合物的膜流和 单体蒸气在螺旋内形成）; （c）将膜流从螺旋（5）转移到加热的蒸气分离器（6）中; （d）在10毫巴至800毫巴的绝对压力下，将蒸气分离器（6）内的聚合物熔体和溶剂蒸气和单体蒸气的溶剂蒸气和单体蒸气膨胀（包括含有 聚合物形成在蒸气分离器内）; 和（e）从蒸气分离器（6）中取出底部产物。 螺旋（5）和蒸汽分离器（6）中的每一个具有单独的加热装置，并且每个加热装置独立地提供高于聚合物软化点的温度。

    Methods for removing volatile components from polymer solutions
    9.
    发明授权
    Methods for removing volatile components from polymer solutions 失效
    从聚合物溶液中除去挥发性组分的方法

    公开(公告)号：US06485607B1

    公开(公告)日：2002-11-26

    申请号：US09673227

    申请日：2000-10-13

    申请人： Thomas Elsner ,  Jürgen Heuser ,  Christian Kords

    发明人： Thomas Elsner ,  Jürgen Heuser ,  Christian Kords

    IPC分类号： B01D130

    CPC分类号： C08G64/406 ,  C08F6/003 ,  Y10S159/08 ,  Y10S159/15

    摘要： A method for removing volatile components from polymer solutions is disclosed. The method, yielding products having low content of residual volatile components and causing no thermal damage to the polymer, entails using apparatuses in which surfaces which come into contact with the product are made from materials which are low in iron content.

    摘要翻译： 公开了从聚合物溶液中除去挥发性组分的方法。 产生具有低残留挥发性成分含量且不对聚合物造成热损伤的产品需要使用与产品接触的表面由铁含量低的材料制成的设备。