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    Process for preparing an aromatic polyamine mixture
    1.
    发明授权
    Process for preparing an aromatic polyamine mixture 有权

    公开(公告)号：US11028042B2

    公开(公告)日：2021-06-08

    申请号：US16071309

    申请日：2017-01-12

    Applicant: BASF SE

    Inventor： Viktor Ladnak ,  Silvia Tauro ,  Kerstin Heinen ,  Kai Thiele ,  Klaus-Peter Metzner ,  Torsten Mattke

    IPC: C07C209/78 ,  C07C209/88 ,  B01D3/14

    Abstract: A process for preparing an aromatic polyamine mixture including 4,4′-methylenedi(phenylamine) and higher homologues of MDA is provided. The process includes steps of (i) reaction of aniline with formaldehyde by means of an acid catalyst to form a crude product mixture (I), (ii) neutralization of the crude product mixture (I) and removal of the salts formed; (iii) isolation of aniline; (iv) distillation of the resulting crude product mixture so as to separate off (iv-1) a mixture (II) of MDA isomers (II-1) containing from 8 to 20% by weight of 4,4′-methylenedi(phenylamine) and not more than 0.3% by weight of secondary components (II-2) and (iv-2) a low boiler mixture of at least 55% by weight of secondary components (II-2) and MDA isomers (II-1); and (v) recirculation of the mixture (II).

    Process for preparing isocyanates
    2.
    发明授权
    Process for preparing isocyanates 有权

    公开(公告)号：US09302983B2

    公开(公告)日：2016-04-05

    申请号：US14546587

    申请日：2014-11-18

    Applicant: BASF SE

    Inventor： Vanessa Simone Lehr ,  Torsten Mattke ,  Carsten Knoesche ,  Heiner Schelling ,  Gerhard Olbert

    IPC: C07C263/10 ,  C01B7/04

    CPC classification number: C07C263/10 ,  C01B7/04 ,  Y02P20/22 ,  C07C265/00

    Abstract: The present invention relates to gas phase phosgenation of amines for preparation of isocyanates. In the present invention, phosgene is prepared by reacting chlorine with an excess of carbon monoxide in a gas phase. The obtained phosgene-containing reaction mixture is divided into two streams by a thermal and/or a membrane separating process. The first stream is a low-carbon monoxide stream of no more than 1% by weight of carbon monoxide, based on a total weight of the first stream. The second stream is a carbon monoxide-rich stream of more than 10% by weight of carbon monoxide, based on a total weight of the second stream. The first stream is used as the phosgene-containing reactant stream in the gas phase phosgenation of amines to prepare isocyanates. The second stream can be recycled into the phosgene synthesis.

    Method for producing isocyanate
    3.
    发明授权
    Method for producing isocyanate 有权
    异氰酸酯的制造方法

    公开(公告)号：US08957245B2

    公开(公告)日：2015-02-17

    申请号：US13761997

    申请日：2013-02-07

    Applicant: BASF SE

    Inventor： Gerhard Olbert ,  Torsten Mattke ,  Carsten Knoesche ,  Andreas Daiss ,  Jens Denecke

    IPC: C07C263/00 ,  B01J12/00 ,  C07C263/10

    CPC classification number: B01J12/00 ,  C07C263/10 ,  C07C265/14

    Abstract: The invention relates to a process for preparing an isocyanate, which involves contacting fluid streams of amine, phosgene and inert medium in at least one mixing device, such that an inert medium stream is metered at least between one amine stream and one phosgene stream within the mixing device, and then reacting an amine with phosgene in a reaction chamber to form an isocyanate. In this process the inert medium stream is metered such that a point of first contact of the amine and the phosgene occurs at a distance from a surface of the mixing device, and a turbulent flow is present in the reaction chamber.

    Abstract translation: 本发明涉及一种制备异氰酸酯的方法，其包括使胺，光气和惰性介质的流体流在至少一个混合装置中接触，使得惰性介质流至少在一个胺流和一个光气流之间计量 混合装置，然后使胺与光气在反应室中反应以形成异氰酸酯。 在该方法中，计量惰性介质流，使得胺和光气的第一次接触点在与混合装置的表面相距一定距离处发生，并且反应室中存在湍流。

    Process for preparing isocyanates and/or polyisocyanates
    5.
    发明授权
    Process for preparing isocyanates and/or polyisocyanates 有权
    制备异氰酸酯和/或多异氰酸酯的方法

    公开(公告)号：US08686182B2

    公开(公告)日：2014-04-01

    申请号：US13661652

    申请日：2012-10-26

    Applicant: BASF SE

    Inventor： Julia Leschinski ,  Torsten Mattke ,  Gerrit Waters ,  Eckhard Stroefer

    IPC: C07C263/00

    CPC classification number: C07C263/10 ,  C07C265/14

    Abstract: The invention relates to a process for preparing isocyanates and/or polyisocyanates by reacting the corresponding amines with phosgene, optionally in the presence of an inert medium, in a reactor (1), a first reactant stream comprising the amine being supplied to the reactor (1) in liquid form, and a second reactant stream comprising the phosgene being supplied to the reactor in gaseous form. The reactor is a centrifugal reactor (1) having a packing (9) which rotates about a central axis (7) in a housing (13), the first reactant stream and the second reactant stream being supplied to the rotating packing (9) such that the reactant streams are mixed due to the centrifugal force in the rotating packing (9) and are transported outward, the mixing in the rotating packing (9) resulting in reaction of the phosgene with the amine to give the corresponding isocyanate or polyisocyanate.

    Abstract translation: 本发明涉及一种制备异氰酸酯和/或多异氰酸酯的方法，该方法通过使反应器（1）中任选在存在惰性介质的情况下使相应的胺与光气反应，将包含胺的第一反应物流供应至反应器 1），并且包含以气体形式供应到反应器的光气的第二反应物流。 反应器是具有在壳体（13）中围绕中心轴线（7）旋转的填料（9）的离心反应器（1），第一反应物流和第二反应物流被供应到旋转填料（9） 由于旋转填料（9）中的离心力将反应物流混合并向外输送，在旋转填料（9）中的混合导致光气与胺的反应，得到相应的异氰酸酯或多异氰酸酯。

    Separation of a phosgene- and hydrogen chloride-comprising stream
    7.
    发明授权
    Separation of a phosgene- and hydrogen chloride-comprising stream 有权

    公开(公告)号：US10252912B2

    公开(公告)日：2019-04-09

    申请号：US15557187

    申请日：2016-03-10

    Applicant: BASF SE

    Inventor： Heiner Schelling ,  Torsten Mattke ,  Hans-Juergen Pallasch ,  Kai Thiele

    IPC: C01B7/07 ,  C01B32/80 ,  B01D53/00 ,  C07C263/10 ,  C07C263/20 ,  F25J3/00

    Abstract: The invention relates to a method of separating a phosgene- and hydrogen chloride-comprising stream (5), wherein said method comprises conveying the hydrogen chloride- and phosgene-comprising stream (5) into a distillation column (1), withdrawing at the bottom of the distillation column (1) a phosgene-comprising stream (7) and withdrawing at the top of the column an essentially hydrogen chloride-comprising stream (9). At least a portion of the stream (9) withdrawn at the top is compressed and at least partially condensed and at least a portion of the liquid and compressed essentially hydrogen chloride-comprising stream is decompressed and recycled into the top of distillation column (1) as reflux.

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