中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

160 records (took 0.027 seconds)

    Process for preparing aromatic isocyanates
    2.
    发明授权
    Process for preparing aromatic isocyanates 有权
    制备芳族异氰酸酯的方法

    公开(公告)号：US08829232B2

    公开(公告)日：2014-09-09

    申请号：US13057869

    申请日：2009-08-06

    Applicant: Ulrich Penzel ,  Torsten Mattke ,  Andreas Wölfert ,  Johannes Jacobs ,  Tsung-Chieh Cheng ,  Kerstin Heinen ,  Eckhard Stroefer ,  Stefan Maixner ,  Wolfgang Mackenroth ,  Christian Tragut ,  Kai Thiele ,  Myung Un Won

    Inventor： Ulrich Penzel ,  Torsten Mattke ,  Andreas Wölfert ,  Johannes Jacobs ,  Tsung-Chieh Cheng ,  Kerstin Heinen ,  Eckhard Stroefer ,  Stefan Maixner ,  Wolfgang Mackenroth ,  Christian Tragut ,  Kai Thiele ,  Myung Un Won

    IPC: C07C263/00 ,  C07C263/10

    CPC classification number: C07C263/10 ,  C07C265/14

    Abstract: The invention relates to a process for preparing isocyanates by reacting the corresponding amines with phosgene in the liquid phase, if appropriate in the presence of at least one inert medium, in which the amine and the phosgene are first mixed in a mixing chamber (1) to give a reaction mixture and the reaction mixture is fed to a reactor, the amine being added through an orifice (3) arranged coaxially to the mixing chamber (1) and the phosgene being added through feed orifices (5) in at least two planes (7, 9) arranged at right angles to the axis (11) of the mixing chamber (1), or the phosgene being added through the orifice (3) arranged coaxially to the mixing chamber and the amine through the feed orifices (5) in at least two planes (7, 9) arranged at right angles to the axis (11) of the mixing chamber (1). At least one plane (9) is arranged upstream and at least one plane (7) downstream of the orifice (3) arranged coaxially to the mixing chamber (1) in main flow direction of the reaction mixture. The mean residence time of the reaction mixture in the mixing chamber (1) is not more than 20 ms.

    Abstract translation: 本发明涉及通过使相应的胺与液相中的光气反应制备异氰酸酯的方法，如果合适的话，在至少一种惰性介质存在下，其中胺和光气首先在混合室（1）中混合， 得到反应混合物并将反应混合物加入到反应器中，通过与混合室（1）同轴设置的孔口（3）加入胺，通过进料孔（5）在至少两个平面中加入光气 （7,9），其与所述混合室（1）的轴线（11）成直角排列，或者通过所述孔（3）加入的光气通过所述孔（3）同轴地配置到所述混合室，所述胺通过所述进料孔（5） 在与所述混合室（1）的轴线（11）成直角布置的至少两个平面（7,9）中。 至少一个平面（9）布置在上游，并且孔（3）下游的至少一个平面（7）在反应混合物的主流动方向上与混合室（1）同轴布置。 反应混合物在混合室（1）中的平均停留时间不超过20ms。

    Trioxane production method wherein a side aqueous flow is deducted at a first distillation stage
    4.
    发明授权
    Trioxane production method wherein a side aqueous flow is deducted at a first distillation stage 失效
    三恶烷制备方法，其中在第一蒸馏阶段扣除侧水流

    公开(公告)号：US08530678B2

    公开(公告)日：2013-09-10

    申请号：US11665840

    申请日：2005-10-20

    Applicant: Markus Siegert ,  Neven Lang ,  Eckhard Stroefer ,  Achim Stammer ,  Thorsten Friese

    Inventor： Markus Siegert ,  Neven Lang ,  Eckhard Stroefer ,  Achim Stammer ,  Thorsten Friese

    IPC: C07D323/06

    CPC classification number: C07D323/06

    Abstract: Processes are disclosed comprising: (a) reacting an aqueous formaldehyde solution in a reactor in the presence of a suitable catalyst to obtain a reaction product mixture comprising trioxane, formaldehyde and water; (b) distilling the reaction product mixture to form a top stream comprising crude trioxane; and (c) treating the top stream in one or more additional stages to form pure trioxane; wherein an aqueous sidestream is drawn off during the distilling of the reaction mixture.

    Abstract translation: 公开的方法包括：（a）在合适的催化剂存在下使甲醛水溶液在反应器中反应，得到包含三恶烷，甲醛和水的反应产物混合物; （b）蒸馏反应产物混合物以形成包含粗三恶烷的顶流; 和（c）在一个或多个附加阶段处理顶部流以形成纯三恶烷; 其中在蒸馏反应混合物期间抽出水分流。

    PROCESS AND APPARATUS FOR PREPARING ISOCYANATES
    7.
    发明申请
    PROCESS AND APPARATUS FOR PREPARING ISOCYANATES 有权
    制备异氰酸酯的方法和装置

    公开(公告)号：US20120004446A1

    公开(公告)日：2012-01-05

    申请号：US13256541

    申请日：2010-03-18

    Applicant: Torsten Mattke ,  Carsten Knoesche ,  Bernd Rumpf ,  Eckhard Stroefer

    Inventor： Torsten Mattke ,  Carsten Knoesche ,  Bernd Rumpf ,  Eckhard Stroefer

    IPC: C07C263/10 ,  B01J19/00

    CPC classification number: C07B43/10 ,  B01J2219/00873 ,  C07C263/10 ,  F28D7/00 ,  F28D13/00 ,  C07C265/14 ,  C07C265/00

    Abstract: The invention relates to a process for preparing isocyanates by reacting the corresponding amines with phosgene in the gas phase, optionally in the presence of an inert medium, in which phosgene and amine are first evaporated and then superheated further to reaction temperature, and the superheated phosgene and amine are mixed and fed to a reactor in which the phosgene and the amine are converted to the isocyanate, wherein the residence time of the phosgene at temperatures greater than 300° C. is not more than 5 s, and/or the temperature of heat transfer surfaces in contact with phosgene is not more than 20 K above the phosgene temperature to be established. The invention further relates to an apparatus for preparing isocyanates by reacting the corresponding amines with phosgene in the gas phase.

    Abstract translation: 本发明涉及通过使气相中相应的胺与光气反应制备异氰酸酯的方法，任选地在惰性介质存在下，首先将光气和胺蒸发，然后进一步过热至反应温度，过热的光气 和胺混合并加入到光气和胺转化为异氰酸酯的反应器中，其中光气在大于300℃的温度下的停留时间不超过5秒，和/或 与光气接触的传热表面不超过要建立的光气温度20K。 本发明还涉及通过气相中相应的胺与光气反应制备异氰酸酯的装置。

    Method for producing isocyanates
    8.
    发明授权
    Method for producing isocyanates 有权
    异氰酸酯的制备方法

    公开(公告)号：US08026387B2

    公开(公告)日：2011-09-27

    申请号：US12160433

    申请日：2007-01-09

    Applicant: Matthias Kloetzer ,  Eckhard Stroefer ,  Heinrich-Josef Blankertz

    Inventor： Matthias Kloetzer ,  Eckhard Stroefer ,  Heinrich-Josef Blankertz

    IPC: C07C249/00

    CPC classification number: C07C263/06 ,  C07C2601/14 ,  C07C265/14

    Abstract: The present invention relates to a multiple-stage process for the continuous preparation of organic, distillable polyisocyanates, preferably diisocyanates, more preferably aliphatic or cycloaliphatic diisocyanates, by reaction of the corresponding organic poly-amines with ureas to form low-molecular monomeric polyureas, and the thermal decomposition thereof.

    Abstract translation: 本发明涉及通过相应的有机多胺与脲形成低分子单体聚脲反应而连续制备有机，可蒸馏的多异氰酸酯，优选二异氰酸酯，更优选脂族或脂环族二异氰酸酯的多阶段方法，以及 其热分解。

    PROCESS FOR PREPARING ISOCYANATES BY THERMAL DISSOCIATION OF CARBAMATES
    9.
    发明申请
    PROCESS FOR PREPARING ISOCYANATES BY THERMAL DISSOCIATION OF CARBAMATES 失效
    通过热分解碳酸酯制备异氰酸酯的方法

    公开(公告)号：US20110178329A1

    公开(公告)日：2011-07-21

    申请号：US13008457

    申请日：2011-01-18

    Applicant: Michael BOCK ,  Axel Franzke ,  Robert Baumann ,  Eckhard Stroefer

    Inventor： Michael BOCK ,  Axel Franzke ,  Robert Baumann ,  Eckhard Stroefer

    IPC: C07C263/04

    CPC classification number: C07C263/04 ,  C07C265/14

    Abstract: The invention relates to a process for preparing isocyanates by thermal dissociation of carbamates and separation by distillation of the reaction mixture from the carbamate dissociation, comprising the corresponding isocyanate and the corresponding alcohol, by distillation in a column (K) having an enrichment section (V) and a stripping section (A), where the carbamate (1) is introduced between the enrichment section (V) and the stripping section (A) and the isocyanate is taken off as a constituent of the bottom stream (2) and the alcohol is taken off as a constituent of the overhead stream (3) from the column (K), in the presence of an inert solvent, wherein an intermediate boiler having a boiling point between the boiling point of the isocyanate and the boiling point of the alcohol under the operating conditions of the carbamate dissociation is used as inert solvent and is fed as external runback (4) in liquid form in a purity of >95% by weight, based on the total weight of the external runback (4), in the upper region of the enrichment section (V) and as gaseous, superheated stream (5) into the lower region of stripping section (A) at one or more points.

    Abstract translation: 本发明涉及一种通过氨基甲酸酯的热解解制备异氰酸酯的方法，并且通过在具有富集部分（V）的塔（K）中蒸馏，将反应混合物从氨基甲酸酯解离（包括相应的异氰酸酯和相应的醇）中蒸馏分离 ）和汽提段（A），其中将氨基甲酸酯（1）引入富集部分（V）和汽提部分（A）之间，异氰酸酯作为底部流（2）的组分和醇 在惰性溶剂的存在下从柱（K）中作为塔顶馏出物（3）的组分脱去，其中沸点介于异氰酸酯的沸点和醇的沸点之间的中间锅炉 在氨基甲酸酯解离的操作条件下，将其作为惰性溶剂使用，并作为外部回流（4）以> 95％重量的液体形式供给，基于外加剂的总重量 （4），在富集部分（V）的上部区域和作为气体的过热流（5）在一个或多个点处进入汽提段（A）的下部区域。

    PROCESS FOR PREPARING ISOCYANATES
    10.
    发明申请
    PROCESS FOR PREPARING ISOCYANATES 有权
    制备异氰酸酯的方法

    公开(公告)号：US20110124908A1

    公开(公告)日：2011-05-26

    申请号：US12675095

    申请日：2008-08-27

    Applicant: Bernd Rumpf ,  Michael Bock ,  Martin Fiene ,  Eckhard Stroefer

    Inventor： Bernd Rumpf ,  Michael Bock ,  Martin Fiene ,  Eckhard Stroefer

    IPC: C07C263/10

    CPC classification number: C07C263/10 ,  C07C263/20 ,  C07C265/14

    Abstract: The invention provides a process for preparing polyisocyanates, comprising the steps of a) reacting amines with phosgene, b) removing hydrogen chloride, excess phosgene and, if appropriate, the solvent from the reaction mixture, c) separating the liquid mixture from step b) into a liquid phase and a gaseous phase, d) working up the gaseous phase from step c) to give the polyisocyanate.

    Abstract translation: 本发明提供了一种制备多异氰酸酯的方法，包括以下步骤：a）使胺与光气反应，b）从反应混合物中除去氯化氢，过量的光气和（如果合适的话）溶剂; c）将液体混合物从步骤b） 进入液相和气相，d）处理来自步骤c）的气相，得到多异氰酸酯。

Patent Agency Ranking