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    11.
    发明专利
    未知

    公开(公告)号：DE19517821A1

    公开(公告)日：1996-11-21

    申请号：DE19517821

    申请日：1995-05-18

    Applicant: BASF AG

    Inventor： FUCHS EBERHARD DR ,  WITZEL TOM DR ,  FLICK KLEMENS DR

    IPC: C07D201/08 ,  C07D223/10

    Abstract: Production of cyclic lactams by the reaction of amino carboxylic acid nitriles with water, performed in the liquid phase in the presence of heterogeneous catalysts based on titanium dioxide with a rutile content in the range from 0.1 to 95 wt.% and an anatase content in the range from 99.9 to 5 wt.% in relation to the total titanium dioxide content.

    Process for preparing caprolactam
    12.
    发明专利
    Process for preparing caprolactam 未知

    公开(公告)号：CZ290780B6

    公开(公告)日：2002-10-16

    申请号：CZ357797

    申请日：1996-05-07

    Applicant: BASF AG

    Inventor： FUCHS EBERHARD DR ,  MELDER JOHANN PETER DR ,  SCHNURR WERNER DR ,  FISCHER ROLF DR

    IPC: C07D201/08 ,  C07D223/12

    Abstract: In the present invention there is disclosed a process for preparing caprolactam by reacting 6-aminocaprolactam with water in the presence of catalyst, wherein there is used a starting mixture consisting of 6-aminocaprolactam and a tetrahydroazepine derivative of the general formula I, whereby the amount of the tetrahydroazepine derivative of the general formula I related to the amount of the 6-aminocaprolactam in the starting mixture ranges within 0.01 to 95 percent by weight and the change is carried out in a liquid phase at temperatures ranging from 140 to 320 degC in the presence of heterogeneous catalysts being selected from the group comprising acid, basic or amphoteric oxides of element of the first, second, third or fourth main groups of the Periodic System of Elements, metal oxides of the second through the sixth minor groups of the Periodic System of Elements, lanthanide and actinide oxides and phosphates.

    13.
    发明专利
    未知

    公开(公告)号：DE19804023A1

    公开(公告)日：1999-08-05

    申请号：DE19804023

    申请日：1998-02-02

    Applicant: BASF AG

    Inventor： MOHRSCHLADT RALF DR ,  HILDEBRANDT VOLKER DR ,  FUCHS EBERHARD DR

    IPC: C08G69/00 ,  C08G69/04 ,  C08G69/08 ,  C08G69/16 ,  C08G69/28 ,  C08K3/00 ,  C08K3/011

    Abstract: The invention relates to a continuous method for producing a polyamide, comprising the following steps: (1) reaction of at least one aminonitrile with water at a temperature of between 90 and 400 DEG C and a pressure of between 0.1 and 35 x 10 Pa in a tubular flow reactor containing a Bronsted acid catalyst selected from a beta zeolite, sheet silicate or titanium dioxide catalyst; (2) further reaction of the reaction mixture at a temperature of between 150 and 400 DEG C and a pressure which is lower than the pressure in step 1, where the temperature and pressure are selected such that a first gaseous phase and a first liquid or first solid phase or a mixture of a first solid and first liquid phase is obtained, and the first gaseous phase is separated; and (3) addition of the first liquid and/or first solid phase to a gaseous or liquid phase containing water, at a temperature of between 150 and 370 DEG C and a pressure of between 0.1 and 30 x 10 Pa, resulting in a product mixture.

    PROCESS FOR PREPARING CARBOXYLIC ACID DERIVATIVES
    16.
    发明专利
    PROCESS FOR PREPARING CARBOXYLIC ACID DERIVATIVES 未知

    公开(公告)号：CZ358097A3

    公开(公告)日：1998-04-15

    申请号：CZ358097

    申请日：1996-05-07

    Applicant: BASF AG

    Inventor： FUCHS EBERHARD DR

    IPC: C07D213/79 ,  C07B61/00 ,  C07C67/22 ,  C07C69/34 ,  C07C231/06 ,  C07C233/02 ,  C07D213/80 ,  C07D213/803 ,  C07D213/81 ,  C07D213/82 ,  C07D213/84

    Abstract: PCT No. PCT/EP96/01890 Sec. 371 Date Nov. 10, 1997 Sec. 102(e) Date Nov. 10, 1997 PCT Filed May 7, 1996 PCT Pub. No. WO96/36592 PCT Pub. Date Nov. 21, 1996A process for preparing carboxylic acid derivatives of the formula I where X is OR2 or NH2, R1 is C1-C20-alkyl, Cl-C20-hydroxyalkyl, C3-C12-cycloalkyl, C4-C12-alkylcycloalkyl, C4-C12-cycloalkylalkyl, C5-C20-alkylcycloalkylalkyl, aryl, C7-C20-aralkyl, C7-C20-alkylaryl, a heteroaliphatic or heteroaromatic ring with 5 to 8 carbon atoms and R2 is C1-C20-alkyl, from carbonitriles of the formula IIR1-C 3BOND N(II),where R1 has the abovementioned meanings, and alcohols of the formula IIIR2-OH(III),where R2 has the abovementioned meanings, at from 50 to 300 DEG C. under from 0.1 to 350 bar in the presence of a heterogeneous catalyst, wherein the reaction is carried out in liquid phase.

    PROCESS OF SIMULTANEOUS PREPARATION OF CAPROLACTAM AND HEXAMETHYLENEDIAMINE
    18.
    发明专利
    PROCESS OF SIMULTANEOUS PREPARATION OF CAPROLACTAM AND HEXAMETHYLENEDIAMINE 未知

    公开(公告)号：CZ202797A3

    公开(公告)日：1998-02-18

    申请号：CZ202797

    申请日：1995-12-22

    Applicant: BASF AG

    Inventor： ACHHAMMER GUNTER DR ,  BASSLER PETER DR ,  FISCHER ROLF DR ,  FUCHS EBERHARD DR ,  LUYKEN HERMANN ,  SCHNURR WERNER DR ,  WITZEL TOM DR

    IPC: C07D201/02 ,  C07C209/48 ,  C07C211/12 ,  C07D201/08 ,  C07D223/10

    Abstract: The invention concerns the simultaneous preparation of caprolactam and hexamethylene diamine from adipodinitrile, by the following steps: (a) the adipodinitrile is partially hydrogenated, producing a mixture substantially containing 6-aminocapronitrile, hexamethylene diamine, ammonia, adipodinitrile and hexamethylene imine (= "the mixture"); (b) the mixture obtained in step (a) is distilled, producing ammonia, as the forerunnings, and a residue I, in the presence of a compound A which is inert in the distillation conditions, the ammonia not being separated totally; (c) the residue I, substantially containing "the mixture", inert compound A and ammonia, the ammonia content being less than that of the mixture used in step (b), is subjected to a second distillation, producing a mixture of the inert compound A and ammonia, as the forerunnings, and a residue II; (d) the base II, substantially containing "the mixture" and inert compound A, is subjected to distillation in a third column, producing the inert compound A, as the forerunnings, and a residue III; (e) the base III, substantially containing "the mixture" and optionally an inert compound B, is subjected to distillation in a fourth column, producing forerunnings KP1, which substantially contain hexamethylene imine, optionally inert compound B and hexamethylene diamine, and a residue IV; (f) the forerunnings KP1 are subjected in a fifth column to distillation, producing forerunnings KP2, which substantially contain hexamethylene imine and optionally inert compound B, and a residue V, which substantially contains hexamethylene diamine with a degree of purity of at least 95 %, the forerunnings KP2 being fed to the third column or optionally only partially fed to the third column, and the rest being discarded; and (g) the residue IV, substantially containing 6-aminocapronitrile and adipodinitrile, is subjected in a sixth column to distillation, producing 6-aminocapronitrile with a degree of purity of at least 95 %, as forerunnings, and adiponitrile in the residue. The resultant 6-aminocapronitrile is cyclized to form caprolactam.

    PROCESS FOR PREPARING CAPROLACTAM
    19.
    发明专利
    PROCESS FOR PREPARING CAPROLACTAM 未知

    公开(公告)号：CZ152697A3

    公开(公告)日：1997-10-15

    申请号：CZ152697

    申请日：1995-11-22

    Applicant: BASF AG

    Inventor： FUCHS EBERHARD DR ,  WITZEL TOM DR

    IPC: C07D201/12

    Abstract: Caprolactam is prepared by cleaving oligomers or polymers containing essentially the repeating unit -[-N(H)-(CH2)5-C(O)-]- in the presence of a catalyst at elevated temperatures by a process in which the cleavage is carried out in the liquid phase in the presence of a heterogeneous catalyst and of an organic solvent.

    20.
    发明专利
    未知

    公开(公告)号：DE19518474A1

    公开(公告)日：1996-11-21

    申请号：DE19518474

    申请日：1995-05-19

    Applicant: BASF AG

    Inventor： FUCHS EBERHARD DR

    IPC: C07B61/00 ,  C07C67/22 ,  C07C69/34 ,  C07C231/06 ,  C07C233/02 ,  C07D213/80 ,  C07D213/803 ,  C07D213/81 ,  C07D213/82 ,  C07D213/84 ,  C07D213/79 ,  C07C233/05 ,  C07C69/003 ,  B01J21/00 ,  B01J23/00 ,  B01J29/00 ,  B01J27/18

    Abstract: A process is disclosed for preparing carboxylic acid derivatives having the general formula (I), in which X stands for OR or NH2, R stands for C1-C20 alkyl, C1-C20 hydroxyalkyl, C3-C12-cycloalkyl, C4-C12 alkyl-cycloalkyl, C4-C12-cycloalkyl-alkyl, C5-C20 alkyl-cycloalkyl-alkyl, aryl, C7-C20 aralkyl, C7-C20 alkylaryl, an heteroaliphatic or heteroaromatic ring with 5 to 8 carbon atoms and R stands for C1-C20 alkyl, from carboxylic acid nitriles having the general formula (II) R -CN, in which R has the above-mentioned meanings, and from alcohols having the general formula (III) R -OH, in which R has the above-mentioned meanings. The reaction is carried out in the liquid phase at temperatures from 50 to 300 DEG C and pressures from 0.1 to 350 bars in the presence of an heterogeneous catalyst.

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