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    METHOD FOR PRODUCING HALOGEN-FREE REACTIVE POLYISOBUTENE
    76.
    发明专利
    METHOD FOR PRODUCING HALOGEN-FREE REACTIVE POLYISOBUTENE 未知

    公开(公告)号：CA2278835A1

    公开(公告)日：1998-08-13

    申请号：CA2278835

    申请日：1998-01-17

    Applicant: BASF AG

    Inventor： NARBESHUBER THOMAS ,  SIGWART CHRISTOPH ,  BARL MANFRED ,  ELLER KARSTEN ,  FISCHER ROLF ,  GEHRER EUGEN

    IPC: C08F4/02 ,  C08F4/20 ,  C08F4/24 ,  C08F10/08 ,  C08F10/10 ,  C08F110/10

    Abstract: The invention relates to a method for producing halogen-free, reactive polyisobutene with a terminal double-bond content of over 50 mol % and an average molecular weight of 2,800 - 10,000 Dalton by cationic polymerization of isobutene or isobutene-containing hydrocarbon mixtures in a liquid phase, wherein polmerization is carried out at a temperature of -30 ~C to +40 ~C in the presence of a heterogeneous polymerization catalyst from one or several oxides of the elements of the 5th and 6th subgroup of the periodic table of elements or in the presence of a heterogeneous polymerization catalyst containing one or more oxidic compounds of one or more elements of the 5th and 6th subgroup of the periodic table of elements on an oxygen-containing zircon compound of various non-zeolitic oxidic supporting material, wherein said catalyst contains no technically active quantities of halogen.

    Preparation of N-substituted 3-hydroxypyrazoles.
    77.
    发明专利
    Preparation of N-substituted 3-hydroxypyrazoles. 未知

    公开(公告)号：ZA965922B

    公开(公告)日：1998-01-12

    申请号：ZA965922

    申请日：1996-07-12

    Applicant: BASF AG

    Inventor： KOENIG HARTMAN ,  GOETZ NORBERT ,  KLEIN ULRICH ,  ELLER KARSTEN

    IPC: C07D231/20 ,  C07D231/22 ,  C07D401/04 ,  C07D

    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.

    78.
    发明专利
    未知

    公开(公告)号：FI971175A0

    公开(公告)日：1997-03-20

    申请号：FI971175

    申请日：1997-03-20

    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 ,  C08G

    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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