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    1.
    发明专利
    未知

    公开(公告)号：AT380788T

    公开(公告)日：2007-12-15

    申请号：AT04764997

    申请日：2004-09-09

    Applicant: BASF AG

    Inventor： HUGO RANDOLF ,  WENZ KIRSTEN ,  JOURDAN SABINE ,  PREISS THOMAS

    IPC: C07C209/48 ,  C07C211/27

    Abstract: The invention relates to a method for the production of diaminoxylene, by continuous hydrogenation of liquid phthalonitrile, on a heterogeneous catalyst, in the presence of liquid ammonia, in a reactor, whereby a part of the reactor product is continuously recycled to the reactor feed as a liquid recycle stream (recirculating loop). A flow of fused phthalonitrile is added as a liquid to the recycle stream around the hydrogenation reactor in a mixing device, whereby the phthalonitrile conversion in the reactor on a single pass is greater than 99 % and the recycle stream comprises more than 93 % by weight of liquid ammonia and diaminoxylene and contains no further solvent for phthalonitrile.

    3.
    发明专利
    未知

    公开(公告)号：DE502004005385D1

    公开(公告)日：2007-12-13

    申请号：DE502004005385

    申请日：2004-09-04

    Applicant: BASF AG

    Inventor： HUGO RANDOLF ,  JOURDAN SABINE ,  WENZ KIRSTEN ,  PREISS THOMAS ,  WECK ALEXANDER

    IPC: C07C209/48 ,  C07C211/27

    Abstract: A process for preparing xylylenediamine, comprising the steps of ammoxidizing xylene to phthalonitrile and hydrogenating the phthalonitrile, which comprises contacting the vaporous product of the ammoxidation stage directly with a liquid organic solvent or with molten phthalonitrile (quench), partly or fully removing components having a boiling point lower than phthalonitrile (low boilers) from the resulting quench solution or suspension or phthalonitrile melt and, after the low boiler removal and before the hydrogenation, removing products having a boiling point higher than phthalonitrile (high boilers).

    5.
    发明专利
    未知

    公开(公告)号：AT376989T

    公开(公告)日：2007-11-15

    申请号：AT04764836

    申请日：2004-09-04

    Applicant: BASF AG

    Inventor： HUGO RANDOLF ,  JOURDAN SABINE ,  WENZ KIRSTEN ,  PREISS THOMAS ,  WECK ALEXANDER

    IPC: C07C209/48 ,  C07C211/27

    Abstract: A process for preparing xylylenediamine, comprising the steps of ammoxidizing xylene to phthalonitrile and hydrogenating the phthalonitrile, which comprises contacting the vaporous product of the ammoxidation stage directly with a liquid organic solvent or with molten phthalonitrile (quench), partly or fully removing components having a boiling point lower than phthalonitrile (low boilers) from the resulting quench solution or suspension or phthalonitrile melt and, after the low boiler removal and before the hydrogenation, removing products having a boiling point higher than phthalonitrile (high boilers).

    7.
    发明专利
    未知

    公开(公告)号：DE502004005974D1

    公开(公告)日：2008-03-06

    申请号：DE502004005974

    申请日：2004-09-09

    Applicant: BASF AG

    Inventor： HUGO RANDOLF ,  WENZ KIRSTEN ,  WAMBSGANSS ROLF ,  JOURDAN SABINE ,  PREISS THOMAS

    IPC: C07C209/48 ,  C07C211/27

    Abstract: A process for preparing xylylenediamine by continuously hydrogenating liquid phthalonitrile over a heterogeneous catalyst in the presence of liquid ammonia in a reactor, which comprises mixing a stream of a phthalonitrile melt in liquid form by means of a mixer unit with a stream of liquid ammonia and conducting the liquid mixture into the hydrogenation reactor.

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