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    12.
    发明专利
    未知

    公开(公告)号：DE19641481A1

    公开(公告)日：1998-04-16

    申请号：DE19641481

    申请日：1996-10-09

    Applicant: BASF AG

    Inventor： SIGWART CHRISTOPH DR ,  ELLER KARSTEN DR ,  BECKER RAINER DR ,  PLITZKO KLAUS-DIETER DR ,  FISCHER ROLF HARTMUTH DR ,  STEIN FRANK DR ,  MUELLER ULRICH DR ,  HESSE MICHAEL DR

    IPC: C08G65/10 ,  B01J23/24 ,  C08G18/48 ,  C08G65/20 ,  C08G65/28 ,  C08G65/32 ,  B01J23/30

    Abstract: The invention concerns a process for preparing polytetrahydrofuran, copolymers of tetrahydrofuran and 2-butin-1,4-diol, diesters of these polymers with C2-C20 monocarboxylic acids or monoesters of these polymers with C1-C10 monocarboxylic acids by polymerizing tetrahydrofuran in the presence of one of the following telogens, water, 1,-4-butane diol, 2-butin-1,4-diol, polytetrahydrofuran with a molecular weight of between 200 and 700 Dalton, or of a C1-C10 monocarboxylic acid or a carboxylic acid anhydride produced from C2-C20 monocarboxylic acids or mixtures of these telogens on a heterogeneous carrier catalyst which contains a catalytically active amount of an oxygenous molybdenum and/or tungsten compound on an oxidic carrier material, and which has been calcined at temperatures of between 500 DEG C and 1000 DEG C after application of the precursor compounds of the oxygenous molybdenum and/or tungsten compounds to the carrier material precursors. Before it is used as a polymerization catalyst, the catalyst is activated by treatment with a reducing agent.

    13.
    发明专利
    未知

    公开(公告)号：DE19626659A1

    公开(公告)日：1998-01-08

    申请号：DE19626659

    申请日：1996-07-03

    Applicant: BASF AG

    Inventor： MASSONNE KLEMENS DR ,  BECKER RAINER DR ,  REIF WOLFGANG DR ,  NEUHAUSER HORST DR ,  GIESELER ANDREAS DR ,  MUNDINGER KLAUS DR

    IPC: C07D307/88 ,  C07D307/89

    Abstract: The invention concerns a process for preparing phthalides of general formula (I) in which R , R , R and R , independently of each, other mean hydrogen, C1-C4 alkyl or C1-C4 alkoxy, by the catalytic hydrogenation of phthalic acid anhydrides of general formula (II), in which the groups R , R , R and R have the above meanings, in a solvent, the phthalide (I), which is produced as a reaction product during the catalytic hydrogenation process, being used as solvent.

    PROCESS FOR PREPARING POLYTETRAHYDROFURAN
    14.
    发明专利
    PROCESS FOR PREPARING POLYTETRAHYDROFURAN 未知

    公开(公告)号：CZ85197A3

    公开(公告)日：1997-11-12

    申请号：CZ85197

    申请日：1995-09-21

    Applicant: BASF AG

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

    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.

    15.
    发明专利
    未知

    公开(公告)号：DE4316138A1

    公开(公告)日：1994-11-17

    申请号：DE4316138

    申请日：1993-05-14

    Applicant: BASF AG

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

    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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