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    32.
    发明专利
    未知

    公开(公告)号：DE19500222A1

    公开(公告)日：1996-07-11

    申请号：DE19500222

    申请日：1995-01-05

    Applicant: BASF AG

    Inventor： ACHHAMMER GUENTHER DR ,  BASLER 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 ,  C07D233/10

    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.

    33.
    发明专利
    未知

    公开(公告)号：DE19500041A1

    公开(公告)日：1996-07-04

    申请号：DE19500041

    申请日：1995-01-03

    Applicant: BASF AG

    Inventor： RITZ JOSEF DR ,  FISCHER ROLF DR ,  SCHNURR WERNER DR ,  FUCHS EBERHARD DR ,  ACHHAMMER GUENTHER DR ,  LUYKEN HERMANN

    IPC: C07D201/08 ,  C07B63/02 ,  C07D201/16 ,  C07D223/10

    Abstract: Crude capronitrile is purified by hydrogenation, subsequent treatment in an acidic medium and subsequent distillation in an alkaline medium, by a process in which (a) 6-aminocapronitrile is converted into crude caprolactam by reaction with water, (b) high boilers and low boilers are separated off from the crude caprolactam from step (a), (c) the crude caprolactam from step (b) is treated with hydrogen at from 50 DEG to 150 DEG C. and from 1.5 to 250 bar in the presence of a hydrogenation catalyst and, if desired, of a solvent to give a mixture A, (d1) mixture A in a solvent is passed, at from 30 DEG to 80 DEG C. and from 1 to 5 bar, over an ion exchanger containing terminal acid groups to give a mixture B1, or (d2) mixture A is distilled in the presence of sulfuric acid, any solvent present being removed before the addition of the sulfuric acid, to give a mixture B2, and (e) mixture B1 or mixture B2 is distilled in the presence of a base to give pure caprolactam.

    35.
    发明专利
    未知

    公开(公告)号：DE4239782A1

    公开(公告)日：1994-06-01

    申请号：DE4239782

    申请日：1992-11-26

    Applicant: BASF AG

    Inventor： WITZEL TOM DR ,  FUCHS EBERHARD DR

    IPC: B01J23/44 ,  C07B61/00 ,  C07C209/48 ,  C07C211/09 ,  C07C211/12

    Abstract: Diamines of the general formula I in which A denotes a C1- to C20-alkylene chain which is optionally mono- to pentasubstituted by C1- to C4-alkyl, R and R denote C1- to C20-alkyl, C1- to C20-hydroxyalkyl, C3 - to C8-cycloalkyl, C4- to C20-alkylcycloalkyl, C4- to C20-cycloalkylalkyl, phenyl, C7- to C20-phenylalkyl, C1- to C20-alkoxyalkyl, C7- to C20-phenoxyalkyl, or together denote a saturated or unsaturated C2- to C6-alkylene chain which is optionally mono- to trisubstituted by C1- to C4-alkyl and optionally interrupted by oxygen or nitrogen, are prepared by reaction of dinitriles of the general formula II NC-A-CN (II), in which A has the abovementioned meaning, with secondary amines of the general formula III in which R and R have the abovementioned meanings, with hydrogen at temperatures of 50 to 200@C and pressures of 5 to 300 bar in the presence of a hydrogenation catalyst, by employing palladium catalysts on oxidic supports as hydrogenation catalysts.

    PROCESS FOR PREPARING CAPROLACTAM
    36.
    发明专利
    PROCESS FOR PREPARING CAPROLACTAM 未知

    公开(公告)号：MY131710A

    公开(公告)日：2007-08-30

    申请号：MYPI9503653

    申请日：1995-11-28

    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-C9O)-]- 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 AND ORGANIC SOLVENT.

    38.
    发明专利
    未知

    公开(公告)号：DE59903806D1

    公开(公告)日：2003-01-30

    申请号：DE59903806

    申请日：1999-06-02

    Applicant: BASF AG

    Inventor： ELLER KARSTEN DR ,  FIEGE BERND ,  RITTINGER STEFAN DR ,  FUCHS EBERHARD DR

    IPC: C07C209/48 ,  C07C211/09

    Abstract: Production of N-substituted 2-methyl-1,5-pentanediamine derivatives (I) comprises reacting 2-methylglutaronitrile with a primary or secondary amine and hydrogen at 50-250 degrees C and 0.5-35 MPa in the presence of a catalyst that comprises one or more noble metals on an oxide support and has been pretreated with hydrogen at 50-300 degrees C for at least 0.5 hours. Production of 2-methyl-1,5-pentanediamine derivatives of formula (I) comprises reacting 2-methylglutaronitrile with a primary or secondary amine of formula R R NH and hydrogen at 50-250 degrees C and 0.5-35 MPa in the presence of a catalyst that comprises one or more noble metals on an oxide support and has been pretreated with hydrogen at 50-300 degrees C for at least 0.5 hours: R , R = H or 1-20C alkyl, 3-8C cycloalkyl, aryl or 7-20C aryl optionally substituted by 1-20C alkyl, 1-20C alkoxy, 6-20C aryloxy and/or OH, or together form a 3-7C alkylene chain optionally substituted by 1-20C alkyl and/or 1-20C alkoxy and optionally interrupted by one or two O atoms or NR groups, provided that R and R are not both H; R = H or 1-20C alkyl. An Independent claim is also included for 1,5-bis(dimethylamino)-2-methylpentane (Ia).

    Process for preparing caprolactam
    39.
    发明专利
    Process for preparing caprolactam 未知

    公开(公告)号：CZ288144B6

    公开(公告)日：2001-05-16

    申请号：CZ152697

    申请日：1995-11-22

    Applicant: BASF AG

    Inventor： FUCHS EBERHARD DR ,  WITZEL TOM DR

    IPC: C07D201/12

    Abstract: In the present invention there is disclosed a process for preparing caprolactam by splitting oligomers or polymers containing substantially repeating unit -[N(H)-(CHi2)i5-C(O)-]-, in the presence of a catalyst at elevated temperature. The invented preparation process is characterized in that the splitting is carried out in liquid phase in the presence of a heterogeneous catalyst and an organic solvent.

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