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    VERFAHREN ZUR HERSTELLUNG VON DI- UND POLYAMINEN DER DIPHENYLMETHANREIHE
    4.
    发明公开
    VERFAHREN ZUR HERSTELLUNG VON DI- UND POLYAMINEN DER DIPHENYLMETHANREIHE 审中-公开

    公开(公告)号：EP3160934A1

    公开(公告)日：2017-05-03

    申请号：EP15729526.2

    申请日：2015-06-22

    申请人： Covestro Deutschland AG

    发明人： KNAUF, Thomas ,  WERSHOFEN, Stefan ,  GRUNER, Klaus-Gerd ,  HARTJES, Volker

    IPC分类号： C07C209/78

    CPC分类号： C07C209/78 ,  B01D3/14 ,  B01D17/02 ,  B01J14/00 ,  B01J19/0006 ,  B01J19/245 ,  B01J2219/00225 ,  C02F1/04 ,  C02F2101/38 ,  C02F2103/36 ,  C07C209/84 ,  C07C209/86 ,  Y02P20/582 ,  C07C211/50

    摘要： The present invention relates to a process for preparing di- and polyamines of the diphenylmethane series (MDA), a system for producing MDA and a process for operating a system for preparing MDA. The invention enables optimization of production standstills during operation of the MDA process with respect to time expenditure and optionally also with respect to energy and material consumption by means of a so-called recirculation mode for individual system components. During interruption of the process or interruption of the operation of individual system components, formaldehyde is not introduced into the reaction and the system components that are not affected by a revision, repair, or cleaning measure are operated in so-called recirculation mode. This enables, among others things, that only the affected system component can be put in standstill during the time period of the measure, which is advantageous in terms of productivity and economy of the process as well as in terms of the quality of the products produced.

    摘要翻译： 本发明涉及制备二苯基甲烷系列（MDA）的二胺和多胺的方法，用于生产MDA的系统和用于操作用于制备MDA的系统的方法。 本发明使得在MDA过程的操作期间关于时间消耗的生产停滞的优化以及可选地还关于通过用于单个系统组件的所谓的再循环模式的能量和材料消耗来优化生产停滞。 在过程中断或单个系统部件操作中断期间，甲醛不会被引入反应中，并且不受修正，修理或清洁措施影响的系统部件以所谓的再循环模式运行。 这使得能够在测量的时间段内仅使受影响的系统部件处于静止状态，这对于生产过程的经济性以及所生产产品的质量而言是有利的 。

    VERFAHREN ZUR HERSTELLUNG VON DI- UND POLYAMINEN DER DIPHENYLMETHANREIHE
    5.
    发明公开
    VERFAHREN ZUR HERSTELLUNG VON DI- UND POLYAMINEN DER DIPHENYLMETHANREIHE 有权

    公开(公告)号：EP2984067A1

    公开(公告)日：2016-02-17

    申请号：EP14715615.2

    申请日：2014-04-08

    申请人： Covestro Deutschland AG

    发明人： KNAUF, Thomas ,  LORENZ, Wolfgang ,  WERSHOFEN, Stefan ,  ADAMSON, Richard ,  BECKER, Karsten

    IPC分类号： C07C209/78 ,  B01D17/02 ,  B01D17/04 ,  C07C263/10

    CPC分类号： C07C209/78 ,  C07C263/10 ,  C07C2601/16 ,  C07C211/44 ,  C07C265/12

    摘要： The present invention relates to a process for the preparation of di- and polyamines of the diphenylmethane series in which, by using a coalescence auxiliary in the phase separation of the process product obtained in the scrubbing of the neutralized crude product, the fraction of water and thus also of water-soluble impurities in the organic MDA-containing phase is reduced. According to the invention, the coalescence auxiliary used is a filter bed made of coalescence fibre material. The di- and polyamines of the diphenylmethane series obtained after distillative purification of this MDA-containing organic phase are exceptionally suitable for the preparation of the corresponding isocyanates.

    摘要翻译： 本发明涉及一种生产二苯基甲烷系列二胺和多胺的方法，其中通过在洗脱中和的粗产物中获得的工艺产物的相分离中使用聚结助剂，水的分数以及水的分数 有机MDA相中的可溶性杂质减少。 根据本发明，所使用的聚结助剂是由聚结纤维材料制成的过滤床。 在该含有MDA的有机相的蒸馏精制后获得的二苯基甲烷系列的二胺和多胺特别适用于制备相应的异氰酸酯。