公开(公告)号：US08318971B2

公开(公告)日：2012-11-27

申请号：US12394149

申请日：2009-02-27

申请人： Fritz Pohl ,  Andreas Bulan ,  Rainer Weber ,  Richard Adamson ,  Matthias Böhm ,  Christian Six

发明人： Fritz Pohl ,  Andreas Bulan ,  Rainer Weber ,  Richard Adamson ,  Matthias Böhm ,  Christian Six

IPC分类号： C07C249/00

CPC分类号： C25B15/08 ,  C07C209/78 ,  C07C263/10 ,  C25B1/26 ,  C07C211/50 ,  C07C265/14

摘要： The invention relates to a process for preparing methylenediphenyl diisocyanates which comprises at least the steps: A) reaction of aniline with formaldehyde in the presence of hydrochloric acid as catalyst to give a mixture of diamines and polyamines of the diphenylmethane series (MDA) and subsequent at least partial neutralization of the hydrochloric acid by means of alkali metal hydroxide, B) reaction of the mixture of diamines and polyamines of the diphenylmethane series obtained in step A) with phosgene to give a mixture of diisocyanates and polyisocyanates of the diphenylmethane series (MDI) and hydrogen chloride, wherein C) the hydrochloric acid which has been neutralized in step A) is separated off in the form of a solution containing alkali metal chloride and is subsequently at least partly fed to an electrochemical oxidation to form chlorine, alkali metal hydroxide and optionally hydrogen and D) at least part of the chlorine produced in step C) is used for preparing the phosgene used in step B).

摘要翻译： 本发明涉及一种制备亚甲基二苯基二异氰酸酯的方法，其至少包括以下步骤：A）在盐酸作为催化剂存在下苯胺与甲醛的反应，得到二苯基甲烷系列（MDA）的二胺和多胺的混合物， 通过碱金属氢氧化物最小程度地中和盐酸，B）将步骤A）中得到的二苯基甲烷系列的二胺和多胺的混合物与光气反应，得到二苯基甲烷系列（MDI）的二异氰酸酯和多异氰酸酯的混合物， 和氯化氢，其中C）在步骤A）中已中和的盐酸以含有碱金属氯化物的溶液的形式分离，随后至少部分地进料至电化学氧化以形成氯，碱金属氢氧化物和 任选地氢和D）步骤C）中产生的至少一部分氯用于制备磷 在步骤B）中使用的烯。

公开(公告)号：US08079752B2

公开(公告)日：2011-12-20

申请号：US12316716

申请日：2008-12-16

申请人： Andreas Rausch ,  Christian Steffens ,  Dietmar Wastian ,  Manfred Keller-Killewald ,  Matthias Böhm ,  Joachim Ritter ,  Marcus Grünewald

发明人： Andreas Rausch ,  Christian Steffens ,  Dietmar Wastian ,  Manfred Keller-Killewald ,  Matthias Böhm ,  Joachim Ritter ,  Marcus Grünewald

IPC分类号： B01F7/10

CPC分类号： B01J19/1806 ,  B01F7/00766 ,  B01F13/1013 ,  B01F13/1016 ,  B01J2219/182 ,  C07C263/10 ,  C07C265/14

摘要： The invention relates to a mixer reactor of the rotor-stator type. This mixer reactor comprises a substantially rotationally symmetric housing which has a distributing chamber, a mixing chamber, a front plate that modifies the cross-section of the housing between these two chambers, and there are separate inlets into the mixing chamber for at least two substances and an outlet for removing the mixed material or product. The inlet for the first substance is provided in the axis of rotation of the mixing chamber. Two or more channels are aligned radially outward from this inlet, and the first substance is transported through these channels and into the mixing chamber. The inlet for the at least second substance is constructed in the form of a plurality of openings in the front plate, these inlet openings being are arranged rotationally symmetrically to the axis of rotation. Each of these inlet openings for the at least second substance has a corresponding pin which can be displaced in the axial direction.

摘要翻译： 本发明涉及转子 - 定子类型的混合器反应器。 该混合器反应器包括基本上旋转对称的壳体，其具有分配室，混合室，改变壳体在这两个室之间的横截面的前板，并且在混合室中有独立的入口用于至少两种物质 以及用于除去混合材料或产品的出口。 第一物质的入口设置在混合室的旋转轴线中。 两个或更多个通道从该入口径向向外对准，并且第一物质被输送通过这些通道并进入混合室。 用于至少第二物质的入口以前板中的多个开口的形式构造，这些入口开口相对于旋转轴线旋转对称地布置。 用于至少第二物质的这些入口中的每一个具有可在轴向方向上移位的相应销。

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。

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。

公开(公告)号：US20100298596A1

公开(公告)日：2010-11-25

申请号：US12851604

申请日：2010-08-06

申请人： Berthold Keggenhoff ,  Heinrich Lokum ,  Matthias Böhm

发明人： Berthold Keggenhoff ,  Heinrich Lokum ,  Matthias Böhm

IPC分类号： C07C263/10

CPC分类号： C07C263/10 ,  C07C265/14

摘要： Isocyanates, preferably diisocyanates and polyisocyanates of the diphenylmethane series (MDI), are produced by reaction of amines dissolved in a solvent with phosgene in the same solvent to form the corresponding isocyanates. Hydrogen chloride and excess phosgene are subsequently removed from the reaction mixture to obtain a crude isocyanate-containing solution. Subsequently, the crude isocyanate-containing solution is separated by distillation into isocyanates and solvent. The solvent is recycled and used for the production of solutions of the amines and of phosgene. The solvent being recycled is treated to reduce the phosgene and diisocyanate contents before being used for the production of the solution of the amine.

摘要翻译： 二苯基甲烷系列（MDI）的异氰酸酯，优选二异氰酸酯和多异氰酸酯是通过将溶于溶剂中的胺与光气在相同溶剂中反应形成相应的异氰酸酯而制备的。 随后从反应混合物中除去氯化氢和过量的光气，得到粗的含异氰酸酯的溶液。 随后，将含粗异氰酸酯的溶液通过蒸馏分离成异氰酸酯和溶剂。 将溶剂再循环并用于生产胺和光气的溶液。 在用于制备胺溶液之前，处理回收的溶剂以降低光气和二异氰酸酯含量。

公开(公告)号：US07504533B2

公开(公告)日：2009-03-17

申请号：US11409940

申请日：2006-04-24

申请人： Matthias Böhm ,  Wolfgang Lorenz ,  Bill L. Brady, Jr. ,  Donald L. Pferdehirt

发明人： Matthias Böhm ,  Wolfgang Lorenz ,  Bill L. Brady, Jr. ,  Donald L. Pferdehirt

IPC分类号： C07C263/00 ,  C07C249/00

CPC分类号： C07C263/10 ,  C01B7/0706 ,  C01B7/0731 ,  C07C263/20 ,  C07C265/14

摘要： Isocyanates are produced by a) reacting at least one amine with phosgene, optionally in the presence of a solvent to produce the corresponding isocyanate and a stream containing hydrogen chloride, phosgene and optionally solvent, low-boiling compounds and inert substances is obtained, b) separating the stream containing hydrogen chloride, phosgene and optionally solvent, low-boiling compounds and inert substances in an at least two-stage sequence of absorption steps that includes (1) at least one isothermal absorption step and (2) at least one adiabatic absorption step, to obtain (i) a hydrogen chloride stream containing phosgene in concentrations of at most 0.5 wt. % (based on the weight of the hydrogen chloride stream) and (ii) a liquid phosgene stream, and c) recycling the liquid phosgene stream (ii) to the reaction of amine with phosgene.

摘要翻译： 异氰酸酯通过以下方法制备：a）任选地在溶剂存在下使至少一种胺与光气反应以产生相应的异氰酸酯，并且获得含有氯化氢，光气和任选溶剂的低沸点化合物和惰性物质的流，b） 在至少两级的吸收步骤序列中分离含有氯化氢，光气和任选溶剂的低沸点化合物和惰性物质，其包括（1）至少一个等温吸收步骤和（2）至少一个绝热吸收 步骤，以获得（i）含有至多0.5重量％浓度的光气的氯化氢流。 ％（基于氯化氢流的重量）和（ii）液体光气流，和c）将液体光气流（ii）再循环到胺与光气的反应中。

公开(公告)号：US07088108B2

公开(公告)日：2006-08-08

申请号：US11060921

申请日：2005-02-18

申请人： Peter König ,  Stefan Krone ,  Stefan Woschech ,  Matthias Böhm ,  Andreas Schroth

发明人： Peter König ,  Stefan Krone ,  Stefan Woschech ,  Matthias Böhm ,  Andreas Schroth

IPC分类号： G01R31/08 ,  G01R27/02 ,  G01R27/08

CPC分类号： G01K15/00 ,  G01D3/036 ,  G01D18/00 ,  G01K7/20 ,  G01K7/24 ,  G01L27/007

摘要： In a method for detecting an offset drift in a resistive Wheatstone measuring bridge, a switch is made between a measuring mode and a testing mode without interfering in the internal structure of the measuring bridge. In testing mode, two sensor resistors that act in the same way and lie in different bridge arms in the measuring mode are connected in series, and a voltage level occurring in the connection of these sensor resistors is compared with a reference voltage. Preferably the sensor resistor that acts in a different way and lies between the two series-connected sensor resistors acting in the same way is bridged. The reference voltage is advantageously formed by resistive division of the voltage applied to the series connection of the sensor resistors. The testing mode may expediently be switched in such a way that the two pairs of sensor resistors acting in the same way are respectively tested in succession.

摘要翻译： 在用于检测电阻式惠斯通测量桥中的偏移漂移的方法中，在测量模式和测试模式之间进行切换，而不会干扰测量桥的内部结构。 在测试模式下，以测量模式相同方式并且位于不同桥臂中的两个传感器电阻器串联连接，并且将这些传感器电阻器的连接中发生的电压电平与参考电压进行比较。 优选地，传感器电阻器以不同的方式起作用并位于以相同方式起作用的两个串联连接的传感器电阻器之间。 参考电压有利地通过施加到传感器电阻器的串联连接的电压的电阻分压来形成。 测试模式可以方便地切换，使得两对传感器电阻器以相同的方式起作用，分别连续测试。