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    Method for producing cyclic lactams
    41.
    发明专利
    Method for producing cyclic lactams 未知

    公开(公告)号：AU6738901A

    公开(公告)日：2001-11-12

    申请号：AU6738901

    申请日：2001-04-30

    Applicant: BASF AG

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

    IPC: C07D223/10 ,  C07D201/08 ,  C07D201/16

    Abstract: The invention relates to a method for producing cyclic lactams of formula (II) by reacting a compound (I) of formula (I) with water in the presence of an organic, liquid dilution agent in the liquid phase. In formula (II), n and m respectively can have the values 0, 1, 2, 3, 4, 5, 6, 7, 8 and 9 and the sum of n+m is at least 3, preferably at least 4 and R and R represent C1-C6 alkyl, C5-C7 cycloalkyl or C6-C12 aryl groups. In formula (I), R , R , m and n are defined as above and R represents nitrile, carboxylic acid amide and carboxylic acid groups. The inventive method is characterized in that a) compound (I) is reacted with water in the liquid phase in the presence of an organic, liquid dilution agent (III) to form a mixture (IV) containing a lactam (II) and said mixture (IV) is subjected to an aqueous treatment to obtain a two-phase system.

    Method for producing cyclic lactams
    42.
    发明专利
    Method for producing cyclic lactams 未知

    公开(公告)号：AU5482101A

    公开(公告)日：2001-11-12

    申请号：AU5482101

    申请日：2001-04-30

    Applicant: BASF AG

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

    IPC: C07D223/10 ,  C07B61/00 ,  C07D201/08 ,  C07D207/263 ,  C07D211/76 ,  C07D225/02

    Abstract: The invention relates to a method for producing cyclic lactams of the formula (II), wherein n and m may each represent 0, 1, 2, 3, 4, 5, 6, 7, 8 and 9 and the sum of n + m is at least 3, preferably at least 4, R and R represent C1-C6 alkyl, C5-C7 cycloalkyl or C6-C12 aryl groups, by reacting a compound of the formula (I), wherein R , R , m and n have the meaning indicated above, and R represents nitrile groups, carboxylic acid amide groups and carboxylic acid groups, with water vapor in the gaseous phase. The inventive method is further characterized in that a) the compound (I) is reacted with water vapor in the gaseous phase, adding an organic diluent (III) before or after the reaction, which diluent has a miscibility gap under certain quantitative, pressure and temperature conditions, said reaction resulting in a mixture (IV) that contains a lactam (II), b) adjusting the mixture (IV) before or after the removal of ammonia to quantitative, pressure and temperature conditions under which the diluent (III) and water are present in a liquid form and have a miscibility gap, and obtaining a two-phase system consisting of a phase (V) that has a higher proportion of diluent (III) than water, and a phase (VI) that has a higher proportion of water than diluent (III), c) separating phase (V) from phase (VI) and, d) removing from phase (V) the diluent (III) and optionally by-products selected from the group of the low-boilers, high-boilers and unreacted compound (I), and obtaining a lactam (II).

    43.
    发明专利
    未知

    公开(公告)号：DE502005001422D1

    公开(公告)日：2007-10-18

    申请号：DE502005001422

    申请日：2005-01-07

    Applicant: BASF AG

    Inventor： KNOESCHE CARSTEN ,  SOHN MARTIN ,  PENZEL ULRICH ,  PALLASCH HANS-JUERGEN ,  GEORGI GUNTER ,  MACKENROTH WOLFGANG ,  SCHWARZ HANS VOLKMAR ,  MAIXNER STEFAN ,  MOLZ GERALD ,  STROEFER ECKHARD

    IPC: C07C209/84 ,  C07C211/50

    Abstract: The invention relates to a process for distillatively preparing TDA from a reactant stream comprising TDA, high boilers and low boilers in a dividing wall column in which a dividing wall is disposed in the longitudinal direction of the column to form an upper combined column region ( 2 ), a lower combined column region ( 3 ), a feed section ( 4 ) having a rectifying section ( 5 ) and stripping section ( 6 ), and also a withdrawal section ( 7 ) having a rectifying section ( 9 ) and stripping section ( 8 ), which comprises the following steps: a. feeding the reactant stream ( 13 ) into the feed section ( 4 ) of the dividing wall column ( 1 ); b. drawing off a low boiler fraction via the top of the column ( 11 ); c. drawing off TDA via a side draw ( 14 ) in the withdrawal section ( 7 ) of the dividing wall column ( 1 ); d. drawing off a low boiler fraction via the bottom of the column ( 12 ).

    46.
    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
    47.
    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).

    METHOD FOR THE PRODUCTION OF A DICARBOXYLIC ACID FROM ACRYLIC ACID
    50.
    发明专利
    METHOD FOR THE PRODUCTION OF A DICARBOXYLIC ACID FROM ACRYLIC ACID 未知

    公开(公告)号：CA2491280A1

    公开(公告)日：2004-01-22

    申请号：CA2491280

    申请日：2003-07-04

    Applicant: BASF AG

    Inventor： MAIXNER STEFAN ,  SCHEIDEL JENS ,  BASSLER PETER

    IPC: C07B61/00 ,  C07C51/09 ,  C07C51/36 ,  C07C55/14 ,  C07C67/10 ,  C07C67/303 ,  C07C67/347 ,  C07C69/44 ,  C07C67/343

    Abstract: Disclosed is a method for producing a dicarboxylic acid of formula (I) H-OOC - (n-C4Hx)-COO-H, in which x represents 6 or 8, from acrylic acid. Said method is characterized by the fact that a) a dicarboxylic acid diester of formula (II) R1-OOC-(n-C4Hx)-COO-R2, in which x represents 6 or 8 and R1, R2 independently represent C1-, C2-, C3-, C4-alkyl, aryl, heteroaryl and can be identical or different, is reacted with acrylic acid so as to obtain a dicarboxylic acid of formula (I) and a mixture of acrylic acid ester of formula C2H3-COOR1 and C2H3-COOR2, in which R1 and R2 have the meanings mentioned above; b) the dicarboxylic acid of formula (I) obtained in step (a ) is separated from the reaction mixture obtained in step (a); c) the C2H3- COOR1, C2H3-COOR2, or the mixtures thereof obtained in step (a) are dimerize d so as to obtain n-butene dicarboxylic acid diester; and d) the dicarboxylic acid diester obtained in step (c) is split into the corresponding dicarboxyl ic acid of formula (I).

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