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    2.
    发明专利
    未知

    公开(公告)号：DE50311902D1

    公开(公告)日：2009-10-22

    申请号：DE50311902

    申请日：2003-12-13

    Applicant: BASF SE

    Inventor： SOHN MARTIN ,  STROEFER ECKHARD ,  NEVEJANS FILIP ,  PENZEL ULRICH ,  PALLASCH HANS-JUERGEN ,  SANDER MICHAEL ,  SCHWARZ HANS VOLKMAR ,  MACKENROTH WOLFGANG

    IPC: C07C263/10 ,  C07C263/20 ,  C07C265/14

    Abstract: The present invention relates to a process for preparing isocyanates by reaction of amines with phosgene in a reactor and subsequent separation of the isocyanate from the reaction mixture leaving the reactor and purification of the isocyanate, wherein the separation and purification of the isocyanate is carried out in a column having a pressure at the top of 1-950 mbar, preferably 5-50 mbar, particularly preferably 10-20 mbar, and a temperature at the bottom of 90-250° C., preferably 120-170° C., particularly preferably 130-150° C., and the pure isocyanate stream is preferably taken off in liquid or gaseous form at a side offtake of the column.

    3.
    发明专利
    未知

    公开(公告)号：AT444118T

    公开(公告)日：2009-10-15

    申请号：AT04713043

    申请日：2004-02-20

    Applicant: BASF SE

    Inventor： BRODHAGEN ANDREAS ,  SOHN MARTIN ,  NEVEJANS FILIP ,  STROEFER ECKHARD ,  WOELFERT ANDREAS ,  OEHLENSCHLAEGER STEFFEN

    IPC: B01J19/24 ,  C07C263/10 ,  C07C265/14

    Abstract: Production of polyisocyanates comprises mixing an amine with phosgene, reacting the amine with the phosgene in a tubular reactor, and passing the reactor effluent to a distillation column. Independent claims are also included for: (1) tubular reactor consisting of one or more horizontal and/or vertical segments connected together by sections whose diameter is smaller than that of the narrowest horizontal or vertical segment; (2) use of the above reactor for carrying out gas-liquid reactions; and (3) use of the above reactor for producing isocyanates by reacting primary amines with phosgene.

    4.
    发明专利
    未知

    公开(公告)号：AT442350T

    公开(公告)日：2009-09-15

    申请号：AT03789263

    申请日：2003-12-13

    Applicant: BASF SE

    Inventor： SOHN MARTIN ,  STROEFER ECKHARD ,  NEVEJANS FILIP ,  PENZEL ULRICH ,  PALLASCH HANS-JURGEN ,  SANDER MICHAEL ,  SCHWARZ HANS ,  MACKENROTH WOLFGANG

    IPC: C07C263/10 ,  C07C263/20 ,  C07C265/14

    Abstract: The present invention relates to a process for preparing isocyanates by reaction of amines with phosgene in a reactor and subsequent separation of the isocyanate from the reaction mixture leaving the reactor and purification of the isocyanate, wherein the separation and purification of the isocyanate is carried out in a column having a pressure at the top of 1-950 mbar, preferably 5-50 mbar, particularly preferably 10-20 mbar, and a temperature at the bottom of 90-250° C., preferably 120-170° C., particularly preferably 130-150° C., and the pure isocyanate stream is preferably taken off in liquid or gaseous form at a side offtake of the column.

    5.
    发明专利
    未知

    公开(公告)号：DE50212277D1

    公开(公告)日：2008-06-26

    申请号：DE50212277

    申请日：2002-11-05

    Applicant: BASF SE

    Inventor： STROEFER ECKHARD ,  SOHN MARTIN ,  HASSE HANS ,  SCHILLING KLEMENS

    IPC: C07C45/86 ,  C07C47/04 ,  C07C31/02 ,  C07C31/20 ,  C07C45/79 ,  C07C45/82 ,  C07C47/058

    Abstract: In an aqueous formaldehyde solution comprising formaldehyde in the form of monomeric formaldehyde, methylene glycol and polyoxymethylene glycols in a total concentration x of >=65% by weight, the mean molar mass {overscore (M of the polyoxymethylene glycols is, as a function of the formaldehyde concentration, equal to or less than the values given by equation I: ( M _ g ⁢ / ⁢ mol ) = 48 + 6.589 . 10 - 1 . ( x % ⁢ ⁢ by ⁢ ⁢ weight ) + 4.725 . 10 2 . ⁢ ( x % ⁢ ⁢ by ⁢ ⁢ weight ) 2 - 3.434 . 10 - 3 . ( x % ⁢ ⁢ by ⁢ ⁢ weight ) 3 + ⁢ 9.625 . 10 - 5 . ( x % ⁢ ⁢ by ⁢ ⁢ weight ) 4 - 1.172 . 10 6 . ⁢ ( x % ⁢ ⁢ by ⁢ ⁢ weight ) 5 + 5.357 . 10 - 9 . ( x % ⁢ ⁢ by ⁢ ⁢ weight ) 6 ( I ) where: {overscore (M is the mean molar mass, and x is the total concentration of formaldehyde in the form of monomeric formaldehyde, methylene glycol and polyoxymethylene glycols in % by weight (total formaldehyde concentration).

    6.
    发明专利
    未知

    公开(公告)号：BRPI0614960A2

    公开(公告)日：2013-01-01

    申请号：BRPI0614960

    申请日：2006-08-22

    Applicant: BASF SE

    Inventor： SCHUBERT OLGA ,  SESING MARTIN ,  SEIDEMANN LOTHAR ,  KARCHES MARTIN ,  GRASSLER THOMAS ,  SOHN MARTIN

    IPC: B01J21/04 ,  B01J23/46 ,  C01B7/04

    Abstract: An oxidation process employing a mechanically stable catalyst of an active metal or combination of active metals supported on aluminum oxide, which is predominantly alpha-aluminum oxide, is provided. The active metal or metals is optionally one or a mixture of ruthenium, copper, gold, an alkaline earth metal, an alkali metal, palladium, platinum, osmium, iridium, silver, and rhenium. The process is applicable to the oxidation of hydrogen chloride to chlorine in a Deacon process.

    7.
    发明专利
    未知

    公开(公告)号：AT488494T

    公开(公告)日：2010-12-15

    申请号：AT03789264

    申请日：2003-12-13

    Applicant: BASF SE

    Inventor： SOHN MARTIN ,  STROEFER ECKHARD ,  NEVEJANS FILIP ,  PENZEL ULRICH ,  PALLASCH HANS-JUERGEN ,  VAN DEN ABEEL PETER ,  DEBERDT FILIP ,  JACOBS JAN D ,  MACKENROTH WOLFGANG

    IPC: C07C263/10 ,  B01D53/70 ,  C01B7/07 ,  C01B32/80

    Abstract: The invention relates to a process for the partial or complete separation of a mixture comprising hydrogen chloride and phosgene, possibly solvents and possibly low boilers and inerts as are typically obtained in the preparation of isocyanates by reaction of amines with phosgene, which comprises firstly carrying out a partial or complete condensation of phosgene, then a distillation or stripping step in a column to remove the hydrogen chloride from the bottom product phosgene and subsequently a scrub of the top product hydrogen chloride by means of the process solvent to absorb the phosgene in the process solvent. An after-purification by means of adsorption on activated carbon or by another suitable method can subsequently be carried out to remove solvent residues.

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