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    11.
    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).

    12.
    发明专利
    未知

    公开(公告)号：DE50108247D1

    公开(公告)日：2006-01-05

    申请号：DE50108247

    申请日：2001-06-13

    Applicant: BASF AG

    Inventor： LUYKEN HERMANN ,  OHLBACH DR ,  FISCHER ROLF-HARTMUTH ,  MELDER JOHANN-PETER ,  BASSLER PETER ,  ANSMANN ANDREAS ,  ACHHAMMER GUENTHER

    IPC: C07C209/48 ,  C07C253/34 ,  C07C255/03 ,  C07C255/24

    Abstract: The invention relates to a method for removing, by distillation, 6-aminocapronitrile from mixtures that contain 6-aminocapronitrile, adipodinitrile and hexamethylenediamine, by a) removing the hexamethylenediamine from the mixture while obtaining a mixture (I) that has a hexamethylenediamine content of less than 1 wt. -%, b) removing completely or partially the 6-aminocapronitrile from mixture (I) while obtaining a mixture (II) whose content in substances that have a higher boiling point as 6-aminocapronitrile under distillation conditions and that cannot be formed by dimerization reactions when 6-aminocapronitrile is thermally treated is less than 1 wt. -%, and c) completely or partially removing from mixture (II) the hexamethylenediamine that might be present while obtaining a mixture (IV) whose hexamethylenediamine content is higher than that of mixture (II), and a mixture (V) whose hexamethylenediamine content is lower than that of mixture (II).

    14.
    发明专利
    未知

    公开(公告)号：BR0316179A

    公开(公告)日：2005-09-27

    申请号：BR0316179

    申请日：2003-11-11

    Applicant: BASF AG

    Inventor： LUYKEN HERMANN ,  ANSMANN ANDREAS ,  BENISCH CHRISTOPH ,  BASSLER PETER ,  FISCHER ROLF-HARTMUTH ,  MAIXNER STEFAN ,  MELDER JOHANN-PETER

    IPC: C07D201/16 ,  C07D201/08

    Abstract: A process for the purification of crude caprolactam, prepared by reaction of a mixture comprising 6-aminocapronitrile and water, comprises a three stage distillation process with feeding of the crude caprolactam and an inorganic acid having a b. pt. above the b. pt. of the caprolactam to a first distillation column. A process for the purification of crude caprolactam, prepared by reaction of a mixture comprising 6-aminocapronitrile and water in the presence of a catalyst to form a mixture comprising caprolactam, ammonia, water and high and low b. pt. byproducts followed by removal of ammonia to yield a mixture of caprolactam, water and high and low b. pt. byproducts followed by at least partial removal of water to yield a crude caprolactam containing caprolactam and high and low b. pt. byproducts, comprises: (a) feeding of the crude caprolactam and an inorganic acid having a b. pt. above the b. pt. of the caprolactam to a first distillation column; (b) distillation of the crude caprolactam and inorganic acid to form a sump stream and an overhead stream; (c) feeding of the overhead stream to a second distillation column; (d) distillation of the stream to form a sump stream and overhead stream; (e) feeding of the overhead stream to a third distillation column; (f) distillation of the overhead stream to form a sump stream and purified caprolactam in the overhead stream; and (g) feeding of the sump stream to the first distillation column.

    PROCEDIMIENTO PARA REDUCIR EL CONTENIDO EN UNA AMINA INSATURADA EN UNA MEZCLA QUE CONTIENE UN AMINONITRILO, UNA DIAMINA, UN DINITRILO O SUS MEZCLAS
    16.
    发明专利
    PROCEDIMIENTO PARA REDUCIR EL CONTENIDO EN UNA AMINA INSATURADA EN UNA MEZCLA QUE CONTIENE UN AMINONITRILO, UNA DIAMINA, UN DINITRILO O SUS MEZCLAS 未知

    公开(公告)号：AR039981A1

    公开(公告)日：2005-03-09

    申请号：ARP030101612

    申请日：2003-05-08

    Applicant: BASF AG

    Inventor： MAIXNER STEFAN ,  BENISCH CRISTOPH ,  LUYKEN HERMANN ,  FISCHER ROLF-HARTMUTH ,  MELDER JOHANN-PETER ,  ANSMANN ANDREAS ,  BASSLER PETER

    IPC: C07C209/84 ,  C07C211/09 ,  C07C211/12 ,  C07C253/34 ,  C07C255/09 ,  C07C255/24

    Abstract: Procedimiento para reducir el contenido en una amina alifática, monoinsaturada (IV) en una mezcla (V), que contiene un aminonitrilo (I) o una diamina (II) o un dinitrilo (III) o sus mezclas y amina (IV), en donde se hace reaccionar: a) una mezcla (V) con un nucleófilo aniónico (VI), que presenta un átomo nucleófilo seleccionado del grupo que comprende: oxígeno, nitrógeno y azufre, que es capaz de recibir un ión H+, formando un ácido con un valor pKa, dentro del margen de 7 a 11, medido en agua a 25° C, y que presenta una nucleofilia relativa, medida en perclorato de metilo/metanol a 25°C, dentro del margen de 3,4 a 4,7 en el caso de oxígeno como átomo nucleófilo, dentro del margen de 4,5 a 5,8 en el caso de nitrógeno como átomo nucleófilo y dentro del margen de 5,5 a 6,8 en el caso de azufre como átomo nucleófilo, en una cantidad de 0,01 a 10 moles por mol de amina (IV) en la mezcla (V), a una temperatura dentro del margen de 50 a 200° C, obteniéndose una mezcla (VII); b) se destila aminonitrilo (I) o diamina (II) o dinitrilo (III) o sus mezclas de la mezcla (VII) a una temperatura dentro del margen de 50 a 200° C y una presión dentro del margen de 0,1 a 100 kPa, obteniéndose un producto de fondo (VIII); en donde el procedimiento comprende el paso; c) del producto de fondo (VIII) se destila un aminonitrilo (I) o una diamina (II) o un dinitrilo (III) o sus mezclas a una temperatura, que es más baja que la temperatura seleccionada en la etapa b).

    20.
    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).

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