VERFAHREN ZUR HERSTELLUNG VON ISOCYANATEN

    公开(公告)号:EP2480525A2

    公开(公告)日:2012-08-01

    申请号:EP10752347.4

    申请日:2010-09-09

    Applicant: BASF SE

    CPC classification number: C07C263/04 C07C263/06 C07C265/14

    Abstract: The invention relates to a multi-stage method for the continuous production of organic, distillable polyisocyanates, preferably diisocyanates, especially preferably aliphatic or cycloaliphatic diisocyanates, by reacting the corresponding organic polyamines with carbonic acid derivatives and alcohol in low-molecular monomer polyurethanes and to the thermal splitting of the latter. During said method, the polyisocyanates produced and unusable residues are separated at specific reaction stages and reusable secondary and intermediate products are recirculated to the initial stages.

    Abstract translation: 本发明涉及一种多阶段方法用于连续生产的有机,蒸馏异氰酸酯,优选二异氰酸酯,特别优选的脂族或脂环族二异氰酸酯,通过与碳酸的衍生物和醇的相应的有机多胺在低分子单体聚氨酯和对反应 后者的热分解。 在所述方法中,多异氰酸酯产生的和不可使用的残余物在特定的反应阶段被分离,并且可重复使用的次级和中间产物被再循环到初始阶段。

    VERFAHREN ZUR HERSTELLUNG VON AMINEN
    29.
    发明授权
    VERFAHREN ZUR HERSTELLUNG VON AMINEN 有权
    用于生产AMINES

    公开(公告)号:EP1476418B1

    公开(公告)日:2010-06-23

    申请号:EP03706422.7

    申请日:2003-02-04

    Applicant: BASF SE

    CPC classification number: C07C209/36 C07C211/51

    Abstract: The invention relates to a method for the production of amines by hydrogenating the corresponding nitroaromates in a vertical reactor whose length is greater than its diameter. Said reactor has a jet nozzle directed downward and arranged in the top area of the reactor. The reaction mixture and optionally part of the educts are fed through said jet nozzle. The reactor also comprises an outlet at any given location of the reactor through which the reaction mixture is once again fed into an external circuit by means of a conveying element of the jet nozzle and the flow is reversed in the bottom area of the reactor. The invention is characterized in that part of the educts used hydrogen and/or nitroaromates are proportioned into the liquid phase of the reactor in such a way that said educts rise upward in the liquid phase.

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