-
公开(公告)号：US20060089507A1
公开(公告)日：2006-04-27
申请号：US10538119
申请日：2003-12-13
申请人： Martin Sohn , Eckhard Stroefer , Filip Nevejans , Ulrich Penzel , Hans-Jurgen Pallasch , Michael Sander , Hans Schwarz , Wolfgang Mackenroth
发明人： Martin Sohn , Eckhard Stroefer , Filip Nevejans , Ulrich Penzel , Hans-Jurgen Pallasch , Michael Sander , Hans Schwarz , Wolfgang Mackenroth
IPC分类号： C07C263/04
CPC分类号： C07C263/20 , C07C263/10 , C07C265/14
摘要： The present invention relates to a process for preparing isocyanates by reaction of amines with phosgene in a reactor and subsequent separation of the isocyanate from the reaction mixture leaving the reactor and purification of the isocyanate, wherein the separation and purification of the isocyanate is carried out in a column having a pressure at the top of 1-950 mbar, preferably 5-50 mbar, particularly preferably 10-20 mbar, and a temperature at the bottom of 90-250° C., preferably 120-170° C., particularly preferably 130-150° C., and the pure isocyanate stream is preferably taken off in liquid or gaseous form at a side offtake of the column.
摘要翻译： 本发明涉及通过在反应器中将胺与光气反应制备异氰酸酯的方法，随后将异氰酸酯从离开反应器的反应混合物中分离并纯化异氰酸酯，其中异氰酸酯的分离和纯化在 具有顶部压力为1-950毫巴，优选5-50毫巴，特别优选10-20毫巴，塔底温度为90-250℃，优选120-170℃的塔，特别是 优选130-150℃，并且纯异氰酸酯流优选在液体或气体形式的塔的出口侧取出。
-
2.发明申请Method for seperating out solvent from a reaction mixture resulting from an isocyanate synthesis and for purifying this solvent 有权从由异氰酸酯合成得到的反应混合物中分离溶剂并纯化该溶剂的方法公开(公告)号：US20060011463A1
公开(公告)日：2006-01-19
申请号：US10539610
申请日：2003-12-13
申请人： Martin Sohn , Eckhard Stroefer , Filip Nevejans , Ulrich Penzel , Hans-Jurgen Pallasch , Peter Van Den Abeel , Filip Deberdt , Jan Jacobs , Wolfgang Mackenroth
发明人： Martin Sohn , Eckhard Stroefer , Filip Nevejans , Ulrich Penzel , Hans-Jurgen Pallasch , Peter Van Den Abeel , Filip Deberdt , Jan Jacobs , Wolfgang Mackenroth
IPC分类号： B01D3/34 , C07C263/00 , B01D3/10
CPC分类号： C07C263/10 , C07C263/20 , Y10S203/08 , C07C265/14
摘要： The invention relates to a process for preparing isocyanates by reaction of amines with phosgene in the presence of inert organic solvents in a reactor and subsequent work-up of the reaction mixture leaving the reactor, wherein the solvent is separated off in a two-stage or multistage, preferably two-stage, distillation process in which the solvent is separated off at a pressure of 0.1-15 bar in a first apparatus and at 1-900 mbar in a second apparatus or further apparatuses, with the heat of condensation of the solvent vapor from the first apparatus being used for partial or complete vaporization of solvent in the second apparatus.
摘要翻译： 本发明涉及通过在反应器中在惰性有机溶剂存在下胺与光气反应制备异氰酸酯的方法，随后后处理离开反应器的反应混合物，其中将溶剂分离成两段或 多级，优选两级蒸馏方法，其中溶剂在第一装置中在0.1-15巴的压力下分离，在第二装置或其它装置中以1-900毫巴分离，其中溶剂的冷凝热 来自第一装置的蒸气用于在第二装置中部分或完全蒸发溶剂。
-
公开(公告)号：US20060123842A1
公开(公告)日：2006-06-15
申请号：US10538759
申请日：2003-12-13
申请人： Martin Sohn , Eckhard Stroefer , Filip Nevejans , Ulrich Penzel , Hans-Jurgen Pallasch , Peter Abeel , Filip Deberdt , Jan Jacobs , Wolfgang Mackenroth
发明人： Martin Sohn , Eckhard Stroefer , Filip Nevejans , Ulrich Penzel , Hans-Jurgen Pallasch , Peter Abeel , Filip Deberdt , Jan Jacobs , Wolfgang Mackenroth
IPC分类号： F25J3/00
CPC分类号： C01B7/0731 , B01D53/002 , B01D2257/2045 , B01D2257/2064 , C01B7/0712 , C01B32/80 , C07C263/10 , Y02P20/154 , C07C265/14 , C07C265/12 , C07C265/10
摘要： The invention relates to a process for the partial or complete separation of a mixture comprising hydrogen chloride and phosgene, possibly solvents and possibly low boilers and inerts as are typically obtained in the preparation of isocyanates by reaction of amines with phosgene, which comprises firstly carrying out a partial or complete condensation of phosgene, then a distillation or stripping step in a column to remove the hydrogen chloride from the bottom product phosgene and subsequently a scrub of the top product hydrogen chloride by means of the process solvent to absorb the phosgene in the process solvent. An after-purification by means of adsorption on activated carbon or by another suitable method can subsequently be carried out to remove solvent residues.
-
公开(公告)号：US20070232827A1
公开(公告)日：2007-10-04
申请号：US11569445
申请日：2002-05-21
IPC分类号： C07C263/10
CPC分类号： C07C263/10 , C07C265/12
摘要： A process for the preparation of isocyanates by reacting amines with phosgene, the phosgene-containing stream of starting materials (i) being substantially free of isocyanates and (ii) having a mass content of hydrogen chloride (referred to below as HCl) of less than 0.4% by mass, and a production plant for carrying out the process according to the invention.
摘要翻译： 一种通过胺与光气反应制备异氰酸酯的方法，含有光气的起始原料物流（i）基本上不含异氰酸酯，和（ii）质量含量的氯化氢（以下称为HCl）小于 0.4质量％，以及用于实施本发明方法的生产设备。
-
公开(公告)号：US20060116529A1
公开(公告)日：2006-06-01
申请号：US10538474
申请日：2003-12-16
IPC分类号： C07C263/10
CPC分类号： C07C263/10 , C07C265/14
摘要： The invention provides a process for preparing isocyanates by reacting amines with phosgene, wherein the phosgene-containing feed stream has a hydrogen chloride content of more than 0.8% by mass.
摘要翻译： 本发明提供了一种通过使胺与光气反应来制备异氰酸酯的方法，其中含光气的进料流的氯化氢含量大于0.8质量％。
-
公开(公告)号：US20060135810A1
公开(公告)日：2006-06-22
申请号：US10539131
申请日：2003-12-16
IPC分类号： C07C263/20
CPC分类号： B01D3/141 , C07C263/10 , C07C263/20 , C07C265/14
摘要： Isocyanates are prepared by a process in which a product stream from the isocyanate synthesis is purified.
摘要翻译： 异氰酸酯通过其中来自异氰酸酯合成的产物流被纯化的方法制备。
-
公开(公告)号：US20070293707A1
公开(公告)日：2007-12-20
申请号：US11574263
申请日：2005-09-10
申请人： Andreas Wolfert , Carsten Knosche , Hans-Jurgen Pallasch , Martin Sesing , Eckhard Stroefer , Hans-Martin Polka , Manfred Heilig
发明人： Andreas Wolfert , Carsten Knosche , Hans-Jurgen Pallasch , Martin Sesing , Eckhard Stroefer , Hans-Martin Polka , Manfred Heilig
IPC分类号： C07C45/78
CPC分类号： C01B7/0737 , B01D53/1493 , B01D2257/2045 , C01B32/80
摘要： The invention relates to a process for separating hydrogen chloride and phosgene, which comprises bringing a mixture of hydrogen chloride and phosgene into contact with an ionic liquid in which at least part of the hydrogen chloride is dissolved in a step a) and then separating off the hydrogen chloride dissolved in the ionic liquid in a step b).
摘要翻译： 本发明涉及一种分离氯化氢和光气的方法，其中包括使氯化氢和光气的混合物与其中至少部分氯化氢在步骤a）中溶解的离子液体接触，然后分离出 在步骤b）中溶解在离子液体中的氯化氢。
-
公开(公告)号：US20070015934A1
公开(公告)日：2007-01-18
申请号：US11523556
申请日：2006-09-20
IPC分类号： C07C263/20 , C07C263/10
CPC分类号： B01D3/141 , C07C263/10 , C07C263/20 , C07C265/14
摘要： Isocyanates are prepared by a process in which a product stream from the isocyanate synthesis is purified.
摘要翻译： 异氰酸酯通过其中来自异氰酸酯合成的产物流被纯化的方法制备。
-
公开(公告)号：US20060052629A1
公开(公告)日：2006-03-09
申请号：US10529182
申请日：2003-09-18
申请人： Eckhard Strofer , Stephan Scholl , Martin Sohn , Andreas Wolfert , Hans-Jurgen Pallasch , Jan Bredehoft
发明人： Eckhard Strofer , Stephan Scholl , Martin Sohn , Andreas Wolfert , Hans-Jurgen Pallasch , Jan Bredehoft
IPC分类号： C07C263/10
CPC分类号： C07C263/10 , B01D1/065 , C07C263/20 , C07C265/14
摘要： Isocyanates are prepared by reacting primary amines with phosgene in a reactor by a process in which a reaction discharge is present in the form of a suspension which contains the isocyanate to be prepared, as a liquid, and carbamyl chlorides as a solid, and the suspension is worked up in a film evaporator, and this process is carried out in a production plant.
-
10.发明申请Process for Simultaneously Preparing 4,4'- Diphenylmethanediamine and Diphenylmethane Diisocyanate and Polyphenylenepolymethylene Polyisocyanates 有权同时制备4,4'-二苯基甲二胺和二苯甲烷二异氰酸酯和多亚苯基聚亚甲基多异氰酸酯的方法公开(公告)号：US20090005596A1
公开(公告)日：2009-01-01
申请号：US12160163
申请日：2007-01-12
IPC分类号： C07C211/09
CPC分类号： C07C209/78 , C07C209/84 , C07C263/10 , C07C211/50 , C07C265/12
摘要： The invention provides aprocess for the simultaneous preparation of 4,4′-diphenylmethanediamine and also diphenylmethane diisocyanate and polyphenylenepolymethylene polyisocyanates, which comprises the steps a) preparation of a mixture of diphenylmethanediamine and polyphenylenepolymethylenepolyamines by acid condensation of aniline and formaldehyde and sub-sequent work-up of the mixture, b) splitting-off of part of the mixture prepared in step a), c) distillation of the mixture separated off in step b) in a column, d) recirculation of the bottom product from step c) to the end product from step a) and condensation of the overhead product from step c), e) distillation of the overhead product from step c) in a column, f) recirculation of the overhead product from step e) to the end product from step a), g) isolation of the 4,4′-diphenylmethanediamine obtained as bottom product in step e), h) reaction of the mixture from step a) with phosgene and subsequent work-up of the reaction product.
摘要翻译： 本发明提供了同时制备4,4'-二苯基甲烷二胺以及二苯基甲烷二异氰酸酯和聚亚苯基多亚甲基多异氰酸酯的方法，其包括以下步骤：a）通过苯胺和甲醛的酸缩合制备二苯基甲二胺和聚亚苯基多亚甲基多胺的混合物， - b）分离步骤a）中制备的部分混合物，c）在柱中蒸馏步骤b）中分离出的混合物，d）将底部产物从步骤c）再循环至 来自步骤a）的最终产物和来自步骤c）的塔顶馏出物的缩合，e）将柱子产物从步骤c）中蒸馏出来，f）将塔顶产物从步骤e）再循环到来自步骤 a），g）分离步骤e）中作为底部产物获得的4,4'-二苯基甲烷二胺，h）步骤a）的混合物与光气的反应和随后的反应产物的后处理 ct。
-
-
-
-
-
-
-
-
-
搜索结果
11 条记录 (耗时 0.028 秒)
