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    Preparation of amines
    33.
    发明授权
    Preparation of amines 有权
    胺的制备

    公开(公告)号：US6140539A

    公开(公告)日：2000-10-31

    申请号：US518620

    申请日：2000-03-03

    申请人： Michael Sander ,  Dietmar Peisker ,  Klaus Werner ,  Holger Braunsberg ,  Gunter Georgi ,  Ulrich Penzel

    发明人： Michael Sander ,  Dietmar Peisker ,  Klaus Werner ,  Holger Braunsberg ,  Gunter Georgi ,  Ulrich Penzel

    IPC分类号： B01J35/02 ,  B01J21/06 ,  B01J23/755 ,  B01J35/10 ,  C07B61/00 ,  C07C209/36 ,  C07C211/50 ,  C07C209/00

    CPC分类号： C07C209/36 ,  B01J35/0013 ,  B01J35/0053 ,  B01J35/006 ,  B01J21/06 ,  B01J21/066 ,  B01J23/755

    摘要： In a process for preparing amines, in which at least one compound containing at least one nitro group is reacted with hydrogen in the presence of a supported catalyst comprising, as catalytically active metal, nickel, if desired together with at least one metal of transition group I, V, VI and/or VIII, the reduced and stabilized supported catalyst comprises nickel crystallites having a bimodal nickel crystallite size distribution having maxima at 30-80 Angstrom and 81-150 Angstrom on a support comprising ZrO.sub.2, ZrO.sub.2 --HfO.sub.2 and/or SiO.sub.2 --ZrO.sub.2 and/or SiO.sub.2 --ZrO.sub.2 --HfO.sub.2 and in the reduced and passivated state has a nickel content of 60-80 percent by mass, an SiO.sub.2 content of 0-20 percent by mass, a ZrO.sub.2 content of 0-40 percent by mass, an HfO.sub.2 content of 0-4 percent by mass and after further reduction for one hour at 100.degree. C. has a degree of reduction of at least 70%.

    摘要翻译： 在制备胺的方法中，其中至少一种含有至少一个硝基的化合物与氢在负载型催化剂的存在下反应，所述负载型催化剂包含作为催化活性金属的镍，如果需要，连同至少一种过渡金属金属 I，V，VI和/或VIII中，还原和稳定的负载型催化剂包括镍微晶，其具有在30-80埃的范围内具有最大值的双峰镍微晶尺寸分布，uml + EE m和81-150埃格列酮+ 在包含ZrO 2，ZrO 2-HfO 2和/或SiO 2 -ZrO 2和/或SiO 2 -ZrO 2 HfO 2的载体上的o + EE m，并且在还原和钝化状态下，镍含量为60-80质量％，SiO 2含量 0〜20质量％，ZrO 2含量为0〜40质量％，HfO 2含量为0〜4质量％，在100℃下进一步还原1小时后，其还原率为70％以上， 。

    PROCESS FOR WORKING UP AN ISOCYANATE-COMPRISING STREAM
    34.
    发明申请
    PROCESS FOR WORKING UP AN ISOCYANATE-COMPRISING STREAM 审中-公开
    加工异构化包装流程的过程

    公开(公告)号：US20120289746A1

    公开(公告)日：2012-11-15

    申请号：US13467371

    申请日：2012-05-09

    申请人： Ulrich Penzel ,  Siegfried Richter ,  Ulrich Juedes ,  Matthias Neumann ,  Hermann Lachmann

    发明人： Ulrich Penzel ,  Siegfried Richter ,  Ulrich Juedes ,  Matthias Neumann ,  Hermann Lachmann

    IPC分类号： C07C209/62

    CPC分类号： C07C209/62 ,  C07C211/51

    摘要： The invention relates to a process for working up a stream (3) comprising from 5 to 90% by weight of isocyanate by hydrolysis of the isocyanate by means of water in a reactor (1), in which the isocyanate-comprising stream (3) is introduced to the reactor (1) via a first inlet and the water is introduced via a second inlet, the isocyanate is reacted with the water in the reactor to form the corresponding: diamine, a diamine-comprising product mixture is taken off from the reactor (1) via a product outlet, wherein part of the product mixture is recirculated to the reactor and the isocyanate-comprising stream (3) is introduced into the recirculated product stream (7), with the isocyanate-comprising stream (3) being introduced continuously without interruption and the molar ratio of H-acid compounds of the hydrolyzate to isocyanate groups of the stream introduced being kept in the range from 10 to 200.

    摘要翻译： 本发明涉及一种通过在反应器（1）中水分异氰酸酯水解反应器（1）来处理包含5至90重量％异氰酸酯的流（3）的方法，其中含异氰酸酯的料流（3） 经由第一入口引入反应器（1）并且通过第二入口引入水，异氰酸酯与反应器中的水反应形成相应的二胺，将含二胺的产物混合物从 反应器（1）通过产品出口，其中部分产物混合物再循环到反应器中，并且含异氰酸酯的料流（3）被引入再循环产物流（7）中，含异氰酸酯的料流（3）为 不间断地连续引入，引入的流的水解产物的H酸化合物与异氰酸酯基团的摩尔比保持在10〜200的范围内。

    Process for preparing methylenedianiline and methylenebis (phenylisocyanate)
    38.
    发明授权
    Process for preparing methylenedianiline and methylenebis (phenylisocyanate) 有权
    亚甲基二苯胺和亚甲基双（异氰酸苯酯）的制备方法

    公开(公告)号：US07230130B2

    公开(公告)日：2007-06-12

    申请号：US10843046

    申请日：2004-05-11

    申请人： Eckhard Ströfer ,  Jan Jacobs ,  Wilfried Seyfert ,  Hans Volkmar Schwarz ,  Olaf Schweers ,  Volker Scharr ,  Ulrich Penzel

    发明人： Eckhard Ströfer ,  Jan Jacobs ,  Wilfried Seyfert ,  Hans Volkmar Schwarz ,  Olaf Schweers ,  Volker Scharr ,  Ulrich Penzel

    IPC分类号： C07C263/10

    CPC分类号： C07C209/78 ,  C07C263/10 ,  C07C211/50 ,  C07C265/12 ,  C07C265/14

    摘要： A process for preparing methylenedianiline by reacting aniline with formaldehyde in the presence of acid catalysts comprising, in a semicontinuous process, introducing aniline with or without acid catalyst, feeding formaldehyde with or without acid catalyst through a mixing element into a circuit in which aniline with or without acid catalyst and with or without previously added formaldehyde is circulated and, after feeding in at least 50% of the total amount of formaldehyde to be fed in, heating the reaction mixture to a temperature above 75° C.In addition, the invention relates to a process for preparing polyisocyanates by phosgenation of amines obtainable in this manner and to the polyisocyanates obtainable by this process.

    摘要翻译： 一种在酸催化剂存在下使苯胺与甲醛反应制备亚甲基二苯胺的方法，该方法包括在半连续方法中引入具有或不具有酸催化剂的苯胺，通过混合元件将甲醛与/或不含酸催化剂进料到其中具有或 没有酸催化剂和有或没有预先加入的甲醛循环，并且在进料至少要供入的甲醛总量的50％之后，将反应混合物加热到高于75℃的温度。另外，本发明涉及 涉及通过以这种方式获得的胺的光气化制备多异氰酸酯的方法以及通过该方法可获得的多异氰酸酯。