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    METHOD FOR PRODUCING ISOCYANATES AND/OR POLYISOCYANATES
    51.
    发明专利
    METHOD FOR PRODUCING ISOCYANATES AND/OR POLYISOCYANATES 未知

    公开(公告)号：IN3051CHN2014A

    公开(公告)日：2015-07-03

    申请号：IN3051CHN2014

    申请日：2014-04-23

    Applicant: BASF SE

    Inventor： LESCHINSKI JULIA ,  MATTKE TORSTEN ,  WATERS GERRIT ,  STROEFER ECKHARD

    IPC: C07C263/10

    Abstract: The invention relates to a method for producing isocyanates and/or polyisocyanates by reacting the corresponding amines with phosgene optionally in the presence of an inert medium in a reactor (1) wherein a first reactant stream containing the amine is fed to the reactor (1) in liquid form and a second reactant stream containing the phosgene is fed to the reactor in gaseous form. The reactor is a centrifugal reactor (1) which has a packing (9) rotating about a central axis (7) in a housing (13) the first reactant stream and the second reactant stream being fed to the rotating packing (9) in such a manner that the reactant streams are mixed and transported outward by the centrifugal force in the rotating packing (9) wherein the phosgene reacts with the amine due to the mixing in the rotating packing (9) to form the corresponding isocyanate or polyisocyanate.

    57.
    发明专利
    未知

    公开(公告)号：AT524415T

    公开(公告)日：2011-09-15

    申请号：AT03752665

    申请日：2003-05-13

    Applicant: BASF SE

    Inventor： WALSDORFF CHRISTIAN ,  FIENE MARTIN ,  WEBER MARKUS ,  STROEFER ECKHARD ,  HARTH KLAUS

    IPC: C01B7/01 ,  C01B7/04

    Abstract: The present invention relates to a process for the continuous preparation of chlorine by reaction of hydrogen chloride with oxygen in the presence of a heterogeneous catalyst, in which the conversion of hydrogen chloride in a single pass through the reactor is restricted to from 15 to 90%.

    58.
    发明专利
    未知

    公开(公告)号：AT518574T

    公开(公告)日：2011-08-15

    申请号：AT08708109

    申请日：2008-01-23

    Applicant: BASF SE

    Inventor： LANG NEVEN ,  THIEL JOACHIM ,  STROEFER ECKHARD ,  KIRSCHBAUM JULIA ,  SIEGERT MARKUS

    IPC: B01D3/14 ,  C07D323/06

    Abstract: A process for removing trioxane from a use stream I of formaldehyde, trioxane and water, by a) providing a use stream I which comprises formaldehyde as the main component and trioxane and water as the secondary components, b) feeding the use stream I, a recycle stream V and a recycle stream VII which comprises formaldehyde as the main component and water and trioxane as the secondary components into a first distillation stage and distilling to obtain a stream II a steam III and formaldehyde as the and a steam X c) distilling the stream III, in a second distillation stage the pressure in the second distillation stage being from 0.1 to 15 bar higher than the pressure in the first distillation stage, to obtain a stream IV and the recycle stream V as the secondary components, d) feeding the stream X and if appropriate a stream IX into a third distillation stage and distilling at a pressure of from 1 to 10 bar to obtain a stream VI which consists substantially of water and a recycle stream VII which comprises formaldehyde as the main component and water and trioxane as the secondary components.

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