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    IMPROVED METHOD FOR PRODUCING HEXAMETHYLENE DIAMINE
    31.
    发明专利
    IMPROVED METHOD FOR PRODUCING HEXAMETHYLENE DIAMINE 未知

    公开(公告)号：CA2342178C

    公开(公告)日：2008-12-02

    申请号：CA2342178

    申请日：1999-08-17

    Applicant: BASF AG

    Inventor： VOIT GUIDO ,  ANSMANN ANDREAS ,  REHFINGER ALWIN ,  MERGER MARTIN ,  MELDER JOHANN-PETER ,  OHLBACH FRANK ,  LUYKEN HERMANN ,  BASSLER PETER ,  FISCHER ROLF

    IPC: C07C209/48 ,  C07B61/00 ,  C07C209/86 ,  C07C211/12

    Abstract: The invention relates to a method for the catalytic hydrogenation of adipodinitrile to hexamethylene diamine at a high temperature and at high pressure in the presence of catalysts based on elementary iron as th e catalytic component, and ammonia as a solvent. The method is characterised in that a) adipodinitrile is hydrogenated at temperatures o f 70 to 220 .degree.C and at pressures of 100 to 400 bar in the presence of catalysts based on elementary iron as the catalytic component, and ammoni a as a solvent to produce a mixture containing adipodinitrile, 6-aminocapronitrile, hexamethylene diamine and high boilers, until the sum o f the 6-aminocapronitrile and adipodinitrile concentration is 1 to 50 wt. 3% in relation to the ammonia-free hydrogenation mixture; b) ammonia is separated out of the hydrogenation discharge; c) hexamethylene diamine is separated out of the remaining mixture; d) 6- aminocapronitrile and adipodinitrile are separated from the high boilers together or separately and e) 6-aminocapronitrile, adipodinitrile or their mixtures are returned to step a).

    32.
    发明专利
    未知

    公开(公告)号：DE50112966D1

    公开(公告)日：2007-10-18

    申请号：DE50112966

    申请日：2001-06-13

    Applicant: BASF AG

    Inventor： OHLBACH FRANK ,  ANSMANN ANDREAS ,  FISCHER ROLF-HARTMUTH ,  MELDER JOHANN-PETER

    IPC: C07D201/08 ,  C07B61/00 ,  C07D233/10 ,  C07D223/10

    Abstract: A process is provided for the preparation of caprolactam from a compound of formula (I):in which R is a carboxamide, carboxylic acid or carboxylic acid ester group,whereina) a compound (I) or a mixture of such compounds, in the presence of ammonia and optionally a liquid diluent (VI), is hydrogenated with hydrogen in the presence of a catalyst (II) to give a mixture (III),b) the hydrogen and the catalyst (II) are separated from the mixture (III) to give a mixture (IV), andc) the mixture (IV), optionally in the presence of a liquid diluent (VII), is converted to caprolactam in the presence of a catalyst (V).

    33.
    发明专利
    未知

    公开(公告)号：AT372319T

    公开(公告)日：2007-09-15

    申请号：AT01947366

    申请日：2001-06-13

    Applicant: BASF AG

    Inventor： OHLBACH FRANK ,  ANSMANN ANDREAS ,  FISCHER ROLF-HARTMUTH ,  MELDER JOHANN-PETER

    IPC: C07D201/08 ,  C07D233/10 ,  C07B61/00 ,  C07D223/10

    Abstract: A process is provided for the preparation of caprolactam from a compound of formula (I):in which R is a carboxamide, carboxylic acid or carboxylic acid ester group,whereina) a compound (I) or a mixture of such compounds, in the presence of ammonia and optionally a liquid diluent (VI), is hydrogenated with hydrogen in the presence of a catalyst (II) to give a mixture (III),b) the hydrogen and the catalyst (II) are separated from the mixture (III) to give a mixture (IV), andc) the mixture (IV), optionally in the presence of a liquid diluent (VII), is converted to caprolactam in the presence of a catalyst (V).

    37.
    发明专利
    未知

    公开(公告)号：AT266619T

    公开(公告)日：2004-05-15

    申请号：AT99944417

    申请日：1999-08-17

    Applicant: BASF AG

    Inventor： FISCHER ROLF ,  BASSLER PETER ,  LUYKEN HERMANN ,  OHLBACH FRANK ,  MELDER JOHANN-PETER ,  MERGER MARTIN ,  ANSMANN ANDREAS ,  REHFINGER ALWIN ,  VOIT GUIDO

    IPC: C07B61/00 ,  C07C209/48 ,  C07C209/86 ,  C07C211/12

    Abstract: A process for catalytic hydrogenation of adiponitrile to hexamethylenediamine at elevated temperature and elevated pressure in the presence of catalysts based on elemental iron as catalytically active component and ammonia as solvent comprisesa) hydrogenating adiponitrile at from 70 to 220° C. and from 100 to 400 bar in the presence of catalysts based on elemental iron as catalytically active component and ammonia as solvent to obtain a mixture comprising adiponitrile,6-aminocapronitrile, hexamethylenediamine and high boilers until the sum total of the 6-aminocapronitrile concentration and the adiponitrile concentration is within the range from 1 to 50% by weight, based on the ammonia-free hydrogenation mixture,b) removing ammonia from the hydrogenation effluent,c) removing hexamethylenediamine from the remaining mixture,d) separating 6-aminocapronitrile and adiponitrile from high boilers individually or together, ande) returning 6-aminocapronitrile, adiponitrile or mixtures thereof into step a).

    39.
    发明专利
    未知

    公开(公告)号：BR0114081A

    公开(公告)日：2003-07-29

    申请号：BR0114081

    申请日：2001-09-20

    Applicant: BASF AG

    Inventor： OHLBACH FRANK ,  LUYKEN HERMANN ,  ANSMANN ANDREAS ,  FISCHER ROF-HARTMUTH ,  MELDER JOHANN-PETER ,  BASSLER PETER

    IPC: B01J23/86 ,  B01J23/94 ,  B01J38/52 ,  C07B61/00 ,  C07C209/48 ,  C07C211/12

    Abstract: A process is provided for the regeneration of a heterogeneous catalyst used for the preparation of compounds containing NH 2 groups by the hydrogenation, with hydrogen, of compounds containing at least one unsaturated carbon-nitrogen bond, wherein a) the feed of the compound to be hydrogenated is stopped and b) the heterogeneous catalyst is treated with a compound of the formula R 1 R 2 N-CO-R 3 (I), in which R 1 is hydrogen or C 1 -C 4 alkyl and R 2 , R 3 independently of one another are each hydrogen or C 1 -C 4 alkyl or together are a C 3 -C 6 alkylene group, or mixtures of such compounds, at a pressure ranging from 0.1 to 30 MPa and a temperature ranging from 100 to 300° C., with the proviso that the compound of formula (I) is in liquid form during the treatment.

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