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    Processes for preparing diaryl and/or alkylaryl carbonates from dialkyl carbonates
    14.
    发明授权
    Processes for preparing diaryl and/or alkylaryl carbonates from dialkyl carbonates 有权
    由碳酸二烷基酯制备二芳基和/或烷基芳基碳酸酯的方法

    公开(公告)号：US08039659B2

    公开(公告)日：2011-10-18

    申请号：US12210279

    申请日：2008-09-15

    申请人： Andre Düx ,  Pieter Ooms ,  Johann Rechner ,  Matthias Böhm ,  Kaspar Hallenberger ,  Georg Ronge ,  Johan Vanden Eynde

    发明人： Andre Düx ,  Pieter Ooms ,  Johann Rechner ,  Matthias Böhm ,  Kaspar Hallenberger ,  Georg Ronge ,  Johan Vanden Eynde

    IPC分类号： C07C69/96

    CPC分类号： C07C68/06 ,  C07C69/96

    摘要： Processes comprising: reacting a dialkyl carbonate and an aromatic hydroxy compound in the presence of a transesterification catalyst in a first reaction column, the first reaction column comprising a top section, a bottom section, a rectifying section in an upper portion of the column and a reaction zone below the rectifying section; feeding a bottom product from the first reaction column to a further reaction column; the bottom product comprising a diaryl carbonate, an alkylaryl carbonate, or both, and residual unreacted dialkyl carbonate and aromatic hydroxy compound; the further reaction column comprising a top section, a rectifying section in an upper portion of the column and a reaction zone below the rectifying section; and reacting the residual unreacted dialkyl carbonate and aromatic hydroxy compound in the further reaction column; feeding a process stream to a distillation column, the process stream comprising a mixture of unreacted dialkyl carbonate and one or more reaction-product alcohols drawn from the first reaction column, the further reaction column, or both, such that the unreacted dialkyl carbonate is separated from the one or more reaction-product alcohols; and recycling the separated, unreacted dialkyl carbonate to the first reaction column; wherein the further reaction column comprises one or more condensers, and heat of condensation from the one or more condensers is fed back into the process.

    摘要翻译： 方法包括：在第一反应塔中的酯交换催化剂存在下使碳酸二烷基酯和芳族羟基化合物反应，所述第一反应塔包括塔的上部的顶部，底部，精馏段和 整流段下方的反应区; 将底部产物从第一反应塔进料至另一反应塔; 底部产物包含碳酸二芳基酯，碳酸二烷基酯或二者，和残留的未反应的碳酸二烷基酯和芳族羟基化合物; 所述另外的反应塔包括顶部，所述塔的上部的精馏部和所述精馏部下方的反应区; 并使残留的未反应的碳酸二烷基碳酸酯和芳族羟基化合物在另外的反应塔中反应; 将工艺流输送到蒸馏塔，所述工艺流包含未反应的碳酸二烷基酯和从第一反应塔，进一步的反应塔或两者中抽出的一种或多种反应产物醇的混合物，使得未反应的碳酸二烷基酯被分离 由一种或多种反应产物醇; 并将分离的未反应的碳酸二烷基酯再循环到第一反应塔中; 其中所述另外的反应塔包括一个或多个冷凝器，并且将来自所述一个或多个冷凝器的冷凝热反馈到所述方法中。

    PROCESSES FOR PURIFYING DIARYL CARBONATES
    15.
    发明申请
    PROCESSES FOR PURIFYING DIARYL CARBONATES 有权
    纯化二氧化碳的方法

    公开(公告)号：US20090137832A1

    公开(公告)日：2009-05-28

    申请号：US12274776

    申请日：2008-11-20

    申请人： Pieter Ooms ,  Johann Rechner ,  Matthias Bohm ,  Andre Dux ,  Kaspar Hallenberger ,  Georg Ronge ,  Johan Vanden Eynde

    发明人： Pieter Ooms ,  Johann Rechner ,  Matthias Bohm ,  Andre Dux ,  Kaspar Hallenberger ,  Georg Ronge ,  Johan Vanden Eynde

    IPC分类号： C07C68/06

    CPC分类号： C07C68/08 ,  B01D3/14 ,  B01D3/141 ,  Y02P20/57 ,  C07C69/96

    摘要： Processes comprising: transesterifying a dialkyl carbonate and an aromatic hydroxyl compound in the presence of a transesterification catalyst to provide a diaryl carbonate product comprising the transesterification catalyst as an impurity; subjecting the diaryl carbonate product to distillation in a first distillation column having an upper part and a lower part, wherein the upper part comprises a rectifying section and the lower part comprises a stripping section; and withdrawing a first sidestream from the first distillation column, wherein the first sidestream comprises a purified diaryl carbonate.

    摘要翻译： 方法包括：在酯交换催化剂存在下酯交换碳酸二烷基酯和芳族羟基化合物，得到包含酯交换催化剂作为杂质的碳酸二芳酯产物; 在具有上部和下部的第一蒸馏塔中对碳酸二芳基酯进行蒸馏，其中上部包括精馏段，下部包含汽提段; 以及从所述第一蒸馏塔排出第一侧流，其中所述第一侧流包含纯化的碳酸二芳基酯。

    Enhanced process for the purification of anhydrous hydrogen chloride gas
    16.
    发明申请
    Enhanced process for the purification of anhydrous hydrogen chloride gas 审中-公开
    用于纯化无水氯化氢气体的增强方法

    公开(公告)号：US20070261437A1

    公开(公告)日：2007-11-15

    申请号：US11433809

    申请日：2006-05-12

    申请人： Eric Boonstra ,  John Teepe ,  Renae Vandekamp ,  Anke Hielscher ,  Kaspar Hallenberger

    发明人： Eric Boonstra ,  John Teepe ,  Renae Vandekamp ,  Anke Hielscher ,  Kaspar Hallenberger

    IPC分类号： F25J3/00

    CPC分类号： C01B7/0712

    摘要： The present invention relates to a process for purifying anhydrous hydrogen chloride gas (“aHCl”), and preferably the anhydrous hydrogen chloride gas recovered from an isocyanate production process. In the process of the present invention, the content of chlorinated organics may be reduced from up to 1000 ppm by volume to below 10 ppb by volume levels. Generally, the process of the invention allows for chlorinated organic levels to be reduced to from 1 to 100 ppb, rendering the treated hydrogen chloride gas usable in a catalytic oxychlorination process or a Deacon process. The treated gas is also suitable for absorption in water or dilute hydrochloric acid.

    摘要翻译： 本发明涉及一种净化无水氯化氢气体（“aHCl”）的方法，优选从异氰酸酯生产方法回收的无水氯化氢气体。 在本发明的方法中，氯化有机物的含量可以从高达1000ppm到低于10ppb的体积水平降低。 通常，本发明的方法允许将氯化有机水平降低至1至100ppb，使经处理的氯化氢气体可用于催化氧氯化过程或Deacon过程。 经处理的气体也适用于在水或稀盐酸中的吸收。

    Method for reprocessing reaction mixtures containing diaryl carbonate
    17.
    发明授权
    Method for reprocessing reaction mixtures containing diaryl carbonate 失效
    后处理含有碳酸二芳基酯的反应混合物的方法

    公开(公告)号：US06437166B1

    公开(公告)日：2002-08-20

    申请号：US09868412

    申请日：2001-06-14

    申请人： Carsten Hesse ,  Ursula Jansen ,  Johann Rechner ,  Claus-Peter Reisinger ,  Rob Eek ,  Kaspar Hallenberger ,  Martin Friedrich

    发明人： Carsten Hesse ,  Ursula Jansen ,  Johann Rechner ,  Claus-Peter Reisinger ,  Rob Eek ,  Kaspar Hallenberger ,  Martin Friedrich

    IPC分类号： C07C6996

    CPC分类号： C07C68/08 ,  C07C69/96

    摘要： A process for the work up of reaction mixtures containing diaryl carbonate, aromatic hydroxy compound, water, base and quaternary salt, which are obtained in the preparation of diaryl carbonates by direct carbonylation of aromatic hydroxy compounds, is described. In the process of the present invention an adduct of diaryl carbonate and aromatic hydroxy compound is crystallized from the reaction mixture. A distillate comprising aromatic hydroxy compound is removed from the liquid phase either prior to or after crystallization of the adduct of diaryl carbonate and aromatic hydroxy compound. The liquid phase remaining after the crystallization and distillation steps may be recycled, without further work up, back to the direct carbonylation process step by which the diaryl carbonate is initially prepared.

    摘要翻译： 描述了通过芳族羟基化合物的直接羰基化制备碳酸二芳酯中获得的包含碳酸二芳基酯，芳族羟基化合物，水，碱和季盐的反应混合物的处理方法。 在本发明的方法中，碳酸二芳酯和芳族羟基化合物的加合物从反应混合物中结晶。 在碳酸二芳基酯和芳族羟基化合物的加合物结晶之前或之后，从液相中除去包含芳族羟基化合物的馏出物。 在结晶和蒸馏步骤后残留的液相可以循环使用，而不需要进一步的后处理，回到最初制备碳酸二芳基酯的直接羰基化工艺步骤。

    Processes for purifying diaryl carbonates
    19.
    发明授权
    Processes for purifying diaryl carbonates 有权
    净化碳酸二芳基酯的方法

    公开(公告)号：US08022240B2

    公开(公告)日：2011-09-20

    申请号：US12274776

    申请日：2008-11-20

    申请人： Pieter Ooms ,  Johann Rechner ,  Matthias Böhm ,  Andre Düx ,  Kaspar Hallenberger ,  Georg Ronge ,  Johan Vanden Eynde

    发明人： Pieter Ooms ,  Johann Rechner ,  Matthias Böhm ,  Andre Düx ,  Kaspar Hallenberger ,  Georg Ronge ,  Johan Vanden Eynde

    IPC分类号： C07C67/02

    CPC分类号： C07C68/08 ,  B01D3/14 ,  B01D3/141 ,  Y02P20/57 ,  C07C69/96

    摘要： Processes comprising: transesterifying a dialkyl carbonate and an aromatic hydroxyl compound in the presence of a transesterification catalyst to provide a diaryl carbonate product comprising the transesterification catalyst as an impurity; subjecting the diaryl carbonate product to distillation in a first distillation column having an upper part and a lower part, wherein the upper part comprises a rectifying section and the lower part comprises a stripping section; and withdrawing a first sidestream from the first distillation column, wherein the first sidestream comprises a purified diaryl carbonate.

    摘要翻译： 方法包括：在酯交换催化剂存在下酯交换碳酸二烷基酯和芳族羟基化合物，得到包含酯交换催化剂作为杂质的碳酸二芳酯产物; 在具有上部和下部的第一蒸馏塔中对碳酸二芳基酯进行蒸馏，其中上部包括精馏段，下部包含汽提段; 以及从所述第一蒸馏塔排出第一侧流，其中所述第一侧流包含纯化的碳酸二芳基酯。