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    Method for producing isocyanates
    3.
    发明申请
    Method for producing isocyanates 有权
    异氰酸酯的制备方法

    公开(公告)号：US20050154227A1

    公开(公告)日：2005-07-14

    申请号：US10504320

    申请日：2003-02-28

    申请人： Eckhard Stroefer ,  mIchael Ochse ,  Volker Krase ,  Andreas Schmidt ,  Matthias Klotzer ,  Imbridt Murrar ,  Gisbert Franzke

    发明人： Eckhard Stroefer ,  mIchael Ochse ,  Volker Krase ,  Andreas Schmidt ,  Matthias Klotzer ,  Imbridt Murrar ,  Gisbert Franzke

    IPC分类号： C07C29/00 ,  C07C31/12 ,  C07C263/04 ,  C07C265/14

    CPC分类号： C07C263/04 ,  C07C265/14

    摘要： In a process for the preparation of isocyanates from carbamic esters, (i) a mixture containing a monofunctional or polyfunctional carbamic ester is passed continuously into a cleavage reactor or a cascade of two or more cleavage reactors, (ii) the carbamic ester is subjected to a thermal cleavage to give isocyanate and alcohol, (iii) the cleavage gas escaping from the cleavage reactor or reactors and containing the isocyanate, the alcohol, any uncleaved and/or partly cleaved carbamic ester and byproducts is brought into contact with a liquid coolant and condensing agent, cooled and at least partly condensed and (iv) the isocyanate and the alcohol are obtained from the cooled cleavage gas and the condensate in a rectification column, a part-stream of the alcohol obtained being used as liquid coolant and condensing agent for cooling and condensing the cleavage gas.

    摘要翻译： 在从氨基甲酸酯制备异氰酸酯的方法中，（i）含有单官能或多官能的氨基甲酸酯的混合物连续地通入裂解反应器或两个或更多个裂解反应器的级联，（ii）将氨基甲酸酯 热裂解以得到异氰酸酯和醇，（iii）从裂解反应器或反应器逸出并含有异氰酸酯，醇，任何未裂解的和/或部分裂解的氨基甲酸酯和副产物的裂解气体与液体冷却剂接触， 缩合剂，冷却并至少部分冷凝，（iv）异氰酸酯和醇由冷却的裂解气体和精馏塔中的冷凝物获得，所得醇的部分物流用作液体冷却剂和冷凝剂，用于 冷却并冷凝裂解气。

    Process for the Preparation of Isocyanates
    4.
    发明申请
    Process for the Preparation of Isocyanates 失效
    异氰酸酯的制备方法

    公开(公告)号：US20080249332A1

    公开(公告)日：2008-10-09

    申请号：US12065680

    申请日：2006-09-05

    申请人： Matthias Klotzer ,  Eckhard Stroefer ,  Volker Krase ,  Andreas Schmidt ,  Peter Scherbel

    发明人： Matthias Klotzer ,  Eckhard Stroefer ,  Volker Krase ,  Andreas Schmidt ,  Peter Scherbel

    IPC分类号： C07C263/00

    CPC分类号： C07C263/04 ,  C07C269/04 ,  C07C271/12 ,  C07C265/14

    摘要： The invention provides a multistage process for continuously preparing organic, distillable polyisocyanates, preferably diisocyanates, more preferably aliphatic or cycloaliphatic diisocyanates, by reacting the corresponding organic polyamines with carbonic acid derivatives and alcohols to low molecular mass monomeric polyurethanes, and thermally cleaving said polyurethanes, in which at defined reaction stages the polyisocyanates prepared and unusable residues are separated off, and reusable by products and intermediates are recycled to upstream stages.

    摘要翻译： 本发明提供了一种多级方法，其通过使相应的有机多胺与碳酸衍生物和醇反应到低分子量单体聚氨酯，以及热裂解所述聚氨酯，连续制备有机，可蒸馏的多异氰酸酯，优选二异氰酸酯，更优选为脂族或脂环族二异氰酸酯， 其在确定的反应阶段中制备的多异氰酸酯和不可用的残余物被分离出来，并且可通过产物和中间体再利用再循环到上游阶段。

    Process for the preparation of isocyanates
    6.
    发明授权
    Process for the preparation of isocyanates 失效
    异氰酸酯的制备方法

    公开(公告)号：US08546605B2

    公开(公告)日：2013-10-01

    申请号：US12065680

    申请日：2006-09-05

    申请人： Matthias Kloetzer ,  Eckhard Stroefer ,  Volker Krase ,  Andreas Schmidt ,  Peter Scherbel

    发明人： Matthias Kloetzer ,  Eckhard Stroefer ,  Volker Krase ,  Andreas Schmidt ,  Peter Scherbel

    IPC分类号： C07C291/00

    CPC分类号： C07C263/04 ,  C07C269/04 ,  C07C271/12 ,  C07C265/14

    摘要： The invention provides a multistage process for continuously preparing organic, distillable polyisocyanates, preferably diisocyanates, more preferably aliphatic or cycloaliphatic diisocyanates, by reacting the corresponding organic polyamines with carbonic acid derivatives and alcohols to low molecular mass monomeric polyurethanes, and thermally cleaving said polyurethanes, in which at defined reaction stages the polyisocyanates prepared and unusable residues are separated off, and reusable by products and intermediates are recycled to upstream stages.

    摘要翻译： 本发明提供了一种多级方法，其通过使相应的有机多胺与碳酸衍生物和醇反应到低分子量单体聚氨酯，以及热裂解所述聚氨酯，连续制备有机，可蒸馏的多异氰酸酯，优选二异氰酸酯，更优选为脂族或脂环族二异氰酸酯， 其在确定的反应阶段中制备的多异氰酸酯和不可用的残余物被分离出来，并且可通过产物和中间体再利用再循环到上游阶段。