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    31.
    发明专利
    未知

    公开(公告)号：ES2169418T3

    公开(公告)日：2002-07-01

    申请号：ES97940102

    申请日：1997-08-21

    Applicant: BASF AG

    Inventor： LUYKEN HERMANN ,  VOIT GUIDO ,  BASSLER PETER ,  REHFINGER ALWIN ,  FISCHER ROLF

    IPC: B01J27/187 ,  C07B61/00 ,  C07C209/48 ,  C07C209/84 ,  C07C211/12 ,  C07C253/30 ,  C07C253/34 ,  C07C255/24

    Abstract: A process for coproduction of 6-aminocapronitrile and hexamethylenediamine starting from adiponitrile comprises(1) partially hydrogenating adiponitrile in the presence of a catalyst to obtain a mixture comprising 6-aminocapronitrile, hexamethylenediamine and adiponitrile,(2) removing 6-aminocapronitrile and hexamethylenediamine from the mixture,(3) adding to the portion comprising essentially adiponitrile from 0.01 to 10% by weight of an acid, based on adiponitrile, or an acidic ion exchanger and removing the adiponitrile from the mixture, and(4) recycling the adiponitrile into step (1).

    36.
    发明专利
    未知

    公开(公告)号：DE10021193A1

    公开(公告)日：2001-11-08

    申请号：DE10021193

    申请日：2000-05-03

    Applicant: BASF AG

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

    IPC: C07D223/10 ,  C07B61/00 ,  C07D201/08 ,  C07D207/263 ,  C07D211/76 ,  C07D225/02 ,  C07D207/267 ,  C07D227/02

    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).

    37.
    发明专利
    未知

    公开(公告)号：DE10021192A1

    公开(公告)日：2001-11-08

    申请号：DE10021192

    申请日：2000-05-03

    Applicant: BASF AG

    Inventor： BASLER PETER ,  BAUMANN DIETER ,  FISCHER ROLF ,  FUCHS EBERHARD ,  MELDER JOHANN-PETER ,  OHLBACH FRANK

    IPC: C07D223/12 ,  C07D201/08 ,  C07D223/10

    Abstract: The invention relates to a method for producing caprolactam, which is characterized by a) reacting, in the presence of a catalyst, a mixture (I) that contains 6-aminocapronitrile and water in the gaseous phase to give a mixture (II) that contains caprolactam, ammonia, water, high-boiling and low-boiling substances, subsequently b) removing the ammonia from mixture (II), thereby producing a mixture (III) that contains caprolactam, water, high-boiling and low-boiling substances, c) removing the water from mixture (III), thereby producing a mixture (IV) that contains caprolactam, high-boiling and low-boiling substances, and finally d) obtaining by crystallization a caprolactam-containing solid substance (V) from mixture (IV), the weight percentage of caprolactam in the solid substance (V) being higher than in mixture (IV).

    METHOD OF PRODUCING POLYTETRAHYDROFURANE
    40.
    发明专利
    METHOD OF PRODUCING POLYTETRAHYDROFURANE 未知

    公开(公告)号：SK281653B6

    公开(公告)日：2001-06-11

    申请号：SK38397

    申请日：1995-09-21

    Applicant: BASF AG

    Inventor： BECKER RAINER ,  SIGWART CHRISTOPH ,  HESSE MICHAEL ,  FISCHER ROLF ,  ELLER KARSTEN ,  HEILEN GERD ,  PLITZKO KLAUS-DIETER

    IPC: B01J23/24 ,  C08G65/10 ,  C08G65/20 ,  C08G65/26 ,  C08G65/28

    Abstract: PCT No. PCT/EP95/03651 Sec. 371 Date Mar. 10, 1997 Sec. 102(e) Date Mar. 10, 1997 PCT Filed Sep. 21, 1995 PCT Pub. No. WO96/09335 PCT Pub. Date Mar. 28, 1996A process for the preparation of polytetrahydrofuran or polytetrahydrofuran monoesters of C1-C10 monocarboxylic acids by the polymerization of tetrahydrofuran over a heterogeneous catalyst in the presence of one of the telogens water, 1,4-butanediol or polytetrahydrofuran having a molecular weight of from 200 to 700 dalton or a C1-C10 monocarboxylic acid or mixtures of these telogens, wherein a supported catalyst is used as catalyst, which contains a catalytically active amount of an oxygen-containing tungsten or molybdenum compound or mixtures of these compounds on an oxidic support material and which was calcined at temperatures ranging from 500 DEG to 1000 DEG C. following the application of the precursor compounds of said oxygen-containing molybdenum and/or tungsten compounds to the support material precursor.

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