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    Catalyst and method for producing polytetrahydrofuran
    41.
    发明专利
    Catalyst and method for producing polytetrahydrofuran 未知

    公开(公告)号：AU1760499A

    公开(公告)日：1999-07-05

    申请号：AU1760499

    申请日：1998-12-10

    Applicant: BASF AG

    Inventor： ELLER KARSTEN ,  RUTTER HEINZ ,  HESSE MICHAEL ,  BECKER RAINER

    IPC: C08G65/10 ,  C08G65/20 ,  C08G65/26

    Abstract: In a process for preparing polytetrahydrofuran, polytetrahydrofuran copolymers or diesters or monoesters thereof by polymerization of tetrahydrofuran in the presence of at least one telogen and/or comonomer over acid-activated montmorillonite catalysts, the montmorillonite catalyst after acid activation has a ratio of montmorillonite structure to the sum of muscovite and kaolin structures, determined from the intensities of the reflections at 2theta=5.5° for montmorillonite, 2theta=9.0° for muscovite and 2theta=12.5° for kaolin measured in the X-ray powder pattern, of at least 5:1.

    PROCESS FOR PRODUCING N-SUBSTITUTED 3-HYDROXYPYRAZOLES
    42.
    发明专利
    PROCESS FOR PRODUCING N-SUBSTITUTED 3-HYDROXYPYRAZOLES 未知

    公开(公告)号：NZ313165A

    公开(公告)日：1999-05-28

    申请号：NZ31316596

    申请日：1996-07-02

    Applicant: BASF AG

    Inventor： KONIG HARTMANN ,  KLEIN ULRICH ,  GOTZ NORBERT ,  ELLER KARSTEN

    IPC: C07D231/20 ,  C07D231/22 ,  C07D401/04

    Abstract: PCT No. PCT/EP96/02891 Sec. 371 Date Jan. 8, 1998 Sec. 102(e) Date Jan. 8, 1998 PCT Filed Jul. 2, 1996 PCT Pub. No. WO97/03969 PCT Pub. Date Feb. 6, 1997N-substituted 3-hydroxypyrazoles of the formula I where R1 is unsubstituted or substituted alkyl, aryl or heteroaryl and R2, R3 is hydrogen, cyano, halogen or unsubstituted or substituted alkyl, aryl or heteroaryl, are prepared by oxidation of a corresponding pyrazolidin-3-one with atmospheric oxygen in the presence of a metal salt in an essentially pH-neutral medium.

    Preparation of tetrahydrofuran homo- or copolymer or mono- or di-ester
    44.
    发明专利
    Preparation of tetrahydrofuran homo- or copolymer or mono- or di-ester 未知

    公开(公告)号：DE19735330A1

    公开(公告)日：1999-02-18

    申请号：DE19735330

    申请日：1997-08-14

    Applicant: BASF AG

    Inventor： BECKER RAINER ,  ELLER KARSTEN ,  RUETTER HEINZ ,  HESSE MICHAEL

    IPC: B01J23/24 ,  C08G65/20 ,  B01J21/16 ,  B01J27/053

    Abstract: The preparation of polytetrahydrofuran, tetrahydrofuran (THF) copolymers, their mono- and di-esters, with lower color index, involves polymerization in the presence of telomer and/or comonomer and also hydrogen, using a heterogeneous catalyst. The preparation of polytetrahydrofuran, tetrahydrofuran (THF) copolymers, their mono- and di-esters, with lower color index, comprises polymerizing THF in the presence of at least one telomer and/or comonomer using a heterogeneous catalyst and also hydrogen. SPECIFIC SUBSTANCES - The hydrogen pressure is 0.1-5 bar.

    45.
    发明专利
    未知

    公开(公告)号：ES2119477T3

    公开(公告)日：1998-10-01

    申请号：ES95933381

    申请日：1995-09-21

    Applicant: BASF AG

    Inventor： BECKER RAINER ,  SIGWART CHRISTOPH ,  HESSE MICHAEL ,  FISCHER ROLF ,  ELLER KARSTEN ,  HEILEN GERD

    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.

    46.
    发明专利
    未知

    公开(公告)号：AT169648T

    公开(公告)日：1998-08-15

    申请号：AT95933381

    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.

    Process for producing n-substituted 3-hydroxypyrazoles
    49.
    发明专利
    Process for producing n-substituted 3-hydroxypyrazoles 未知

    公开(公告)号：AU6517396A

    公开(公告)日：1997-02-18

    申请号：AU6517396

    申请日：1996-07-02

    Applicant: BASF AG

    Inventor： KONIG HARTMANN ,  GOTZ NORBERT ,  KLEIN ULRICH ,  ELLER KARSTEN

    IPC: C07D231/20 ,  C07D231/22 ,  C07D401/04

    Abstract: PCT No. PCT/EP96/02891 Sec. 371 Date Jan. 8, 1998 Sec. 102(e) Date Jan. 8, 1998 PCT Filed Jul. 2, 1996 PCT Pub. No. WO97/03969 PCT Pub. Date Feb. 6, 1997N-substituted 3-hydroxypyrazoles of the formula I where R1 is unsubstituted or substituted alkyl, aryl or heteroaryl and R2, R3 is hydrogen, cyano, halogen or unsubstituted or substituted alkyl, aryl or heteroaryl, are prepared by oxidation of a corresponding pyrazolidin-3-one with atmospheric oxygen in the presence of a metal salt in an essentially pH-neutral medium.

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