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    PROCESS OF SIMULTANEOUS PREPARATION OF CAPROLACTAM AND HEXAMETHYLENEDIAMINE
    44.
    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
    46.
    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.

    50.
    发明专利
    未知

    公开(公告)号：AT138907T

    公开(公告)日：1996-06-15

    申请号：AT91104409

    申请日：1991-03-21

    Applicant: BASF AG

    Inventor： MERGER FRANZ DR ,  OTTERBACH ANDREAS DR ,  WITZEL TOM DR ,  RENZ HANS DR

    IPC: C07C263/04 ,  A01N47/12 ,  C07C265/14 ,  C07C269/04 ,  C07C271/04 ,  C07C271/20 ,  C08G18/00 ,  C08G18/73

    Abstract: The invention relates to novel 2,2-dialkylpentane 1,5-diisocyanates, 2,2-dialkylpentane-1,5-diurethanes and 2,2-dialkylpentane-1,5-dicarbamoyl chlorides of the formula in which R , R denote identical or different linear C1- to C12-alkyl radicals, branched C3- to C12-alkyl radicals, branched C2- to C12-alkenyl radicals, branched C4- to C12-alkenyl radicals or the radicals R and R together denote an alkylene group having 4 to 7 C atoms which is unsubstituted or substituted by one to 5 C1- to C4-alkyl groups and X denotes an NCO-, NH-CO2R -, NHCO2R - or NHCOCl- group, in which R and R are identical or different and denote a linear C1- to C20-alkyl radical, a branched C3- to C20-alkyl radical or a C5- to C12-cycloalkyl radical. The 2,2-dialkylpentane-1,5-diurethanes are, for example, pest control agents and are suitable, as are the 2,2-dialkylpentane-1,5-dicarbamoyl chlorides, for example, for the preparation of 2,2-dialkylpentane 1,5-diisocyanates, which in turn are used for the preparation of compact or cellular plastics by the polyisocyanate polyaddition process.

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