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    PROCESS FOR PREPARING AROMATIC ISOCYANATES
    1.
    发明申请
    PROCESS FOR PREPARING AROMATIC ISOCYANATES 有权
    制备异构体异氰酸酯的方法

    公开(公告)号：US20110251425A1

    公开(公告)日：2011-10-13

    申请号：US13057869

    申请日：2009-08-06

    申请人： Ulrich Penzel ,  Torsten Mattke ,  Andreas Wolfert ,  Johannes Jocobs ,  Tsung-Chieh Cheng ,  Kerstin Heinen ,  Eckhard Stroefer ,  Stefan Maixner ,  Wolfgang Mackenroth ,  Christian Tragut ,  Kai Thiele ,  Myung Un Won

    发明人： Ulrich Penzel ,  Torsten Mattke ,  Andreas Wolfert ,  Johannes Jocobs ,  Tsung-Chieh Cheng ,  Kerstin Heinen ,  Eckhard Stroefer ,  Stefan Maixner ,  Wolfgang Mackenroth ,  Christian Tragut ,  Kai Thiele ,  Myung Un Won

    IPC分类号： C07C263/10 ,  B01J19/00

    CPC分类号： C07C263/10 ,  C07C265/14

    摘要： 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.

    摘要翻译： 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）同轴布置的孔口（3）加入胺，并且通过进料孔（5）在至少两个平面中添加光气 （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。

    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

    申请人： 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

    发明人： 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分类号： C07C263/00 ,  C07C263/10

    CPC分类号： C07C263/10 ,  C07C265/14

    摘要： 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.

    摘要翻译： 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。

    PROCESS FOR PREPARING MDA VIA THE STAGE OF THE AMINAL
    10.
    发明申请
    PROCESS FOR PREPARING MDA VIA THE STAGE OF THE AMINAL 失效
    通过氨基酸制备MDA的方法

    公开(公告)号：US20120035396A1

    公开(公告)日：2012-02-09

    申请号：US13265271

    申请日：2010-04-19

    申请人： Eckhard Stroefer ,  Kai Thiele ,  Michael Zoellinger ,  Johnny Moors ,  Jon S. Speier

    发明人： Eckhard Stroefer ,  Kai Thiele ,  Michael Zoellinger ,  Johnny Moors ,  Jon S. Speier

    IPC分类号： C07C209/78 ,  C07C211/55

    CPC分类号： C07C209/78 ,  C07C209/62 ,  C07C211/50

    摘要： The invention relates to a process for preparing methylenediphenyldiamine (MDA), comprising the following steps a) to c): a) converting formaldehyde and aniline to aminal b) removing water from the aminal obtained in step a) to establish a water content of 0 to 5% by weight based on the aminal, and c) adding an acidic catalyst to the aminal having a water content of 0 to 5% by weight, which comprises using formaldehyde in step a) in the form of highly concentrated formaldehyde with a CH2O content of >50% by weight and preparing the formaldehyde by oxidative dehydrogenation from methanol.

    摘要翻译： 本发明涉及一种制备亚甲基二苯基二胺（MDA）的方法，包括以下步骤a）至c）：a）将甲醛和苯胺转化成缩醛; b）从步骤a）中获得的阿米尔液中除去水，以确定含水量为0 至5重量％，以及c）向具有0-5重量％水含量的氨基酸中加入酸性催化剂，其包括在步骤a）中使用甲醛以高浓度甲醛与CH 2 O形式 含量> 50重量％，并通过甲醇氧化脱氢制备甲醛。