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    91.
    发明专利
    未知

    公开(公告)号：AT202566T

    公开(公告)日：2001-07-15

    申请号：AT97909303

    申请日：1997-09-22

    Applicant: BASF AG

    Inventor： MASSONNE KLEMENS ,  BECKER RAINER ,  NEUHAUSER HORST ,  ZIMMERMANN HORST ,  REIF WOLFGANG ,  CRAMERS PETER ,  NARDIN DANIEL

    IPC: C07D307/88

    Abstract: PCT No. PCT/EP97/05186 Sec. 371 Date Apr. 1, 1999 Sec. 102(e) Date Apr. 1, 1999 PCT Filed Sep. 22, 1997 PCT Pub. No. WO98/14441 PCT Pub. Date Apr. 9, 1998A process for preparing phthalides of the general formula I, where R1, R2, R3 and R4 are independently hydrogen, C1-C4-alkyl or C1-C4-alkoxy, by hydrogenating phthalic anhydrides of the general formula II, where R1, R2, R3 and R4 are each as defined above, with hydrogen in the presence of suspended catalysts of the Raney type in a hydrogenation apparatus by using a mixing apparatus to mix a liquid phase, which includes the catalyst and the phthalic anhydride used and resulting phthalide, and a gas phase, which includes the hydrogenating hydrogen, comprises using the mixing apparatus to introduce a mixing intensity of at least 50 W/l into the liquid phase.

    PROCESS FOR PREPARING N-METHYL-2-(3,4-DIMETHOXYPHENYL)-ETHYLAMINE
    93.
    发明专利
    PROCESS FOR PREPARING N-METHYL-2-(3,4-DIMETHOXYPHENYL)-ETHYLAMINE 未知

    公开(公告)号：SK281665B6

    公开(公告)日：2001-06-11

    申请号：SK142797

    申请日：1996-05-04

    Applicant: BASF AG

    Inventor： FUCHS EBERHARD ,  ZIMMERMANN HORST ,  WITZEL TOM ,  BREITSCHEIDEL BORIS ,  BECKER RAINER ,  HEUHAUSER HORST

    IPC: B01J23/40 ,  C07C213/02 ,  C07C213/06

    Abstract: PCT No. PCT/EP96/01861 Sec. 371 Date Jan. 23, 1998 Sec. 102(e) Date Jan. 23, 1998 PCT Filed May 4, 1996 PCT Pub. No. WO96/36589 PCT Pub. Date Nov. 21, 1996A process for preparing N-methyl-2-(3,4-dimethoxyphenyl)-ethylamine comprises hydrogenating 3,4-dimethoxyphenylacetonitrile with a methylamine of the general formula I (I) where R1 is hydrogen, benzyl or tert-butyl, and hydrogen in the presence of a supported catalyst which comprises from 0.05 to 50% by weight of copper chromite, copper, silver, gold, iron, cobalt, nickel, ruthenium, rhodium, palladium, osmium, iridium, platinum or mixtures thereof, in the presence or absence of water at from 20 DEG to 200 DEG C. under from 1 to 300 bar.

    96.
    发明专利
    未知

    公开(公告)号：DE19726507A1

    公开(公告)日：1998-12-24

    申请号：DE19726507

    申请日：1997-06-23

    Applicant: BASF AG

    Inventor： ELLER KARSTEN ,  SIGWART CHRISTOPH ,  BECKER RAINER ,  PLITZKO KLAUS-DIETER

    IPC: C08G65/10 ,  B01J27/053 ,  C08G65/20 ,  C08G65/26 ,  B01J27/055

    Abstract: The invention relates to a method for producing polytetrahydrofuran, polytetrahydrofuran copolymers, diesters or monoesters of these polymers by polymerization of tetrahydrofuran in the presence of at least one telogene and/or comonomer on a sulfate-containing heterogeneous supported catalyst. A sulfate-containing heterogeneous supported catalyst is used containing at least one metal sulfate, metal hydrogen sulfate, metal oxide sulfate or mixtures thereof.

    98.
    发明专利
    未知

    公开(公告)号：DE59406740D1

    公开(公告)日：1998-09-24

    申请号：DE59406740

    申请日：1994-05-03

    Applicant: BASF AG

    Inventor： DOSTALEK ROMAN ,  FISCHER ROLF ,  MUELLER ULRICH ,  BECKER RAINER

    IPC: B01J21/12 ,  C08G63/668 ,  C08G65/10 ,  C08G65/16 ,  C08G65/20 ,  C08G65/26

    Abstract: PCT No. PCT/EP94/01403 Sec. 371 Date Nov. 7, 1995 Sec. 102(e) Date Nov. 7, 1995 PCT Filed May 3, 1994 PCT Pub. No. WO92/26803 PCT Pub. Date Nov. 24, 1994Polytetrahydrofuran or polytetrahydrofuran monoesters of C1-C20-monocarboxylic acids or polytetrahydrofuran monoethers of monohydric C1-C20-alcohols, having an average molecular weight of from 250 to 10,000 Dalton and liquid at room temperature, are prepared by the cationic polymerization of tetrahydrofuran in the presence of a telogen by a process in which tetrahydrofuran is polymerized in the presence of water, 1,4-butanediol and/or polytetrahydrofuran having an average molecular weight of from 200 to 700 Dalton and/or of a C1-C20-monocarboxylic acid and/or of a monohydric C1-C20-alcohol with the aid of a catalytic amount of a zeolite catalyst which has an SiO2/Al2O3 molar ratio of from 4:1 to 100:1 and in which the population ratio P of the acid centers on the external surface of the zeolite to the total number of acid centers of the zeolite is 0.03/l or more.

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