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    PRODUCTION OF 4-AMINO-2,2,6,6-TETRAMETHYLPIPERIDINE AND 2,2,6,6-TETRAMETHYL-4-PIPERIDINE IMINE
    1.
    发明专利
    PRODUCTION OF 4-AMINO-2,2,6,6-TETRAMETHYLPIPERIDINE AND 2,2,6,6-TETRAMETHYL-4-PIPERIDINE IMINE 失效

    公开(公告)号：JPH10291976A

    公开(公告)日：1998-11-04

    申请号：JP5339098

    申请日：1998-03-05

    Applicant: BASF AG

    Inventor： VOIT GUIDO DR ,  WITZEL TOM DR ,  JULIUS MANFRED DR

    IPC: C07D211/12 ,  B01J21/04 ,  B01J21/06 ,  B01J21/08 ,  B01J31/02 ,  C07B61/00 ,  C07D211/58

    Abstract: PROBLEM TO BE SOLVED: To obtain 4-amino-2,2,6,6-tetramethylpiperidine from 2,2,6,6- tetramethyl-4-piperidinone by an industrially excellent method in terms of cost by using a specific catalyst. SOLUTION: This 4-amino-2,2,6,6-tetramethylpiperidine of formula I is obtained by reacting 2,2,6,6-tetramethyl-4-piperidinone of formula II with ammonia in the presence of an acidic metal oxide catalyst or a solid acidic catalyst insoluble in a reaction mixture (except an ammonium-type inorganic and organic ion-exchanging substance) to obtain an imine substance of formula III, and subjecting to hydrogen addition in the presence of a hydrogenation catalyst. Preferably, aluminum oxide, silicon dioxide, bentonite, aluminum hydrosilicate of montmorillonite-type, aluminum silicate of erionite-type, etc., is used as the catalyst for obtaining the imine substance by the reaction.

    REDUCTION COUPLING OF NITROBENZENE AND REDOX CATALYST
    2.
    发明专利
    REDUCTION COUPLING OF NITROBENZENE AND REDOX CATALYST 失效

    公开(公告)号：JPH1081658A

    公开(公告)日：1998-03-31

    申请号：JP14768297

    申请日：1997-06-05

    Applicant: BASF AG

    Inventor： HAGEMEYER ALFRED DR ,  HEINEKE DANIEL DR ,  VOIT GUIDO DR ,  WITZEL TOM DR

    IPC: B01J23/18 ,  C07B61/00 ,  C07C245/08 ,  C07C291/08

    Abstract: PROBLEM TO BE SOLVED: To obtain azo(oxy)benzene useful as an intermediate for chemical industry, etc., in high efficiency by the reduction coupling of nitrobenzene in vapor phase at a high temperature using heterogeneous catalytic action of a specific redox catalyst having reduced or partially reduced form. SOLUTION: Azobenzene and azoxybenzene are produced by the reduction coupling of nitrobenzene in vapor phase at a high temperature using heterogeneous catalytic action of a specific redox catalyst having reduced or partially reduced form. The reducing catalyst contains one or more active metals such as Bi, V, Cr, Mn, Fe, Co, Pb, Mo, Ce, U, Sn, Sb, Cu, La, W, Nb, Pd, Pt, Ni and In. Nitrobenzene is passed on the redox catalyst together with one or more kinds of gaseous reducing agents free from hydrogen for the deoxidization of nitrobenzene. The average oxidized state of the active metal of the redox catalyst is lower than the maximum oxidized state stable under each reaction condition by >=0.5 before introducing nitrobenzene together with the reducing agent.

    PREPARATIONOF BICYCLIC AMIDINE, DIAZACYCLOALKENE AND ITS PREPARATION
    4.
    发明专利
    PREPARATIONOF BICYCLIC AMIDINE, DIAZACYCLOALKENE AND ITS PREPARATION 失效

    公开(公告)号：JPH11228574A

    公开(公告)日：1999-08-24

    申请号：JP34004198

    申请日：1998-11-30

    Applicant: BASF AG

    Inventor： FRIEDRICH WOLFGANG ,  KNEUPER HEINZ-JOSEF DR ,  ELLER KARSTEN DR ,  WITZEL TOM DR

    IPC: C07D487/04 ,  C07D239/06 ,  C07D471/04

    Abstract: PROBLEM TO BE SOLVED: To produce the subject compound useful for the dehydrohalogenation of organic compounds or synthesis, etc., of polymers in high yield without requiring the use of an acidic catalyst by reacting a specific lactone with a specified diamine while removing water of reaction during the progress of the reaction. SOLUTION: A lactone represented by formula I [R and R are each H or the like; (m) is 2-12] (e.g. γ-butyrolactone) is reacted with a diamine represented by formula II [R and R are each H or the like; (n) is 2-12] (e.g. 1,3-diaminopropane), preferably in at least 1:1.5 initial molar ratio of the lactone to the diamine, preferably continuously over the total reactional time, preferably at 170-220 deg.C for 5-100 hr while eliminating water of reaction and preferably with the aid of an azeotropic agent to produce the objective compound represented by formula III e.g. 1,5-diazabicyclo[4.3.0]non-5-ene}.

    Process for simultaneously preparing caprolactam and hexamethylenediamine
    6.
    发明专利
    Process for simultaneously preparing caprolactam and hexamethylenediamine 未知

    公开(公告)号：CZ289886B6

    公开(公告)日：2002-04-17

    申请号：CZ202797

    申请日：1995-12-22

    Applicant: BASF AG

    Inventor： ACHHAMMER GUNTHER 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: Disclosed is a process for simultaneously preparing caprolactam and hexamethylenediamine from adiponitrile. The invented preparation process is characterized by (a) partial hydrogenation of adiponitrile, (b) subjecting the obtained mixture to distillation to obtain a portion of ammonia as a top product and a heavy fraction I, whereby distillation is carried out in the presence of an inert compound A, (c) subjecting the heavy fraction I to a second distillation to obtain a mixture of the inert compound A and ammonia as a top product and a heavy fraction II, (d) subjecting the heavy fraction II to another distillation to obtain the inert compound A as a top product and a heavy fraction III, whereby the distillation is optionally carried out in the presence of a compound B, (e) subjecting the heavy fraction to distillation to obtain a top product KP1 and a heavy fraction IV, (f) subjecting the KP1 top to distillation to obtain a top product KP2 and a heavy fraction V, whereby the se KP2 top product is supplied at least partially to a third column and the residue is discharged, and (g) subjecting the heavy fraction IV to distillation in order to obtain 6-aminocapronitrile as a top product with adiponitrile at the column bottom, and so obtained 6-aminocapronitrile is then recycled to caprolactam.

    Process for preparing cyclic lactams
    7.
    发明专利
    Process for preparing cyclic lactams 未知

    公开(公告)号：CZ289460B6

    公开(公告)日：2002-01-16

    申请号：CZ357897

    申请日：1996-05-07

    Applicant: BASF AG

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

    IPC: C07D201/08

    Abstract: In the present invention there is disclosed a process for preparing cyclic lactams by reacting amino carboxylic acid nitriles with water, performed in the liquid phase at a temperature ranging from 140 to 320 degC, in the presence of heterogeneous catalysts based on titanium dioxide with a rutile content in the range from 0.1 to 95 percent by weight and an anatase content in the range from 99.9 to 5 percent by weight, based in both cases on the total titanium dioxide weight.

    PROCESS FOR PREPARING CYCLIC CAPROLACTAMS
    8.
    发明专利
    PROCESS FOR PREPARING CYCLIC CAPROLACTAMS 未知

    公开(公告)号：CZ357897A3

    公开(公告)日：1998-04-15

    申请号：CZ357897

    申请日：1996-05-07

    Applicant: BASF AG

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

    IPC: C07D201/08

    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 ALIPHATIC ALPHA, OMEGA AMINONITROLES
    9.
    发明专利
    PROCESS FOR PREPARING ALIPHATIC ALPHA, OMEGA AMINONITROLES 未知

    公开(公告)号：CZ197697A3

    公开(公告)日：1998-03-18

    申请号：CZ197697

    申请日：1995-12-16

    Applicant: BASF AG

    Inventor： MELDER JOHANN PETER DR ,  SCHNURR WERNER DR ,  FLICK KLEMENS DR ,  EBEL KLAUS DR ,  WITZEL TOM DR ,  FISCHER ROLF DR ,  HARDER WOLFGANG DR ,  REHFINGER ALWIN DR

    IPC: B01J23/89 ,  B01J23/76 ,  B01J23/889 ,  B01J27/18 ,  B01J37/02 ,  C07B61/00 ,  C07C253/30 ,  C07C255/24

    Abstract: Aliphatic alpha,omega-aminonitriles are prepared by partial hydrogenation of aliphatic alpha,omega-dinitriles at elevated temperatures and superatmospheric pressure in the presence of a solvent and of a catalyst by a process which comprises using a catalyst which (a) contains a compound based on a metal selected from the group consisting of nickel, cobalt, iron, ruthenium and rhodium and (b) contains from 0.01 to 25% by weight, based on (a), of a promoter based on a metal selected from the group consisting of palladium, platinum, iridium, osmium, copper, silver, gold, chromium, molybdenum, tungsten, manganese, rhenium, zinc, cadmium, lead, aluminum, tin, phosphorus, arsenic, antimony, bismuth and rare earth metals and (c) from 0 to 5% by weight, based on (a), of a compound based on an alkali metal or on an alkaline earth metal. with the proviso that the component (a) is not based on iron or iron and one of the metals selected from the group consisting of cobalt, ruthenium and rhodium when (b) is a promoter based on a metal selected from the group consisting of titanium, manganese, chromium and molybdenum, and with the further proviso that, when a compound based on only ruthenium or rhodium or ruthenium and rhodium or nickel and rhodium is selected as component (a), the promoter (b) may be dispensed with.

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