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    71.
    发明专利
    未知

    公开(公告)号：DE59602289D1

    公开(公告)日：1999-07-29

    申请号：DE59602289

    申请日：1996-08-05

    Applicant: BASF AG

    Inventor： SIGWART CHRISTOPH ,  GEHRER EUGEN ,  MUELLER ULRICH ,  RATH HANS ,  FISCHER ROLF

    IPC: C08F4/02 ,  C08F4/06 ,  C08F4/16 ,  C08F4/18 ,  C08F10/10

    Abstract: PCT No. PCT/EP96/03441 Sec. 371 Date Jan. 27, 1998 Sec. 102(e) Date Jan. 27, 1998 PCT Filed Aug. 5, 1996 PCT Pub. No. WO97/06189 PCT Pub. Date Feb. 20, 1997A process for the preparation of halogen-free, reactive polyisobutene having a content of terminal double bonds of more than 50 mol % and an average molecular weight Mn of from 500 to 5000 dalton by the cationic polymerization of isobutene or isobutene-containing hydrocarbon mixtures in the liquid phase, wherein the polymerization is carried out at a temperature of from -30 DEG to +40 DEG C. over a heterogeneous polymerization catalyst containing at least one element acting as promoter and selected from Group IB, Group IIB, Group IIIB, Group IVB, Group VB, Group VIIB, or Group VIIIB of the Periodic Table or from Group IIA, Group IIIA, Group IVA, Group VA, or Group VIA of the Periodic Table or a number of said elements in each case in the form of an oxygen-containing compound and zirconium in the form of an oxygen-containing compound, said polymerization catalyst containing no industrially effective amounts of halogens.

    73.
    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.

    Process for preparing polytetrahydrofuran and derivatives thereof
    78.
    发明专利
    Process for preparing polytetrahydrofuran and derivatives thereof 未知

    公开(公告)号：AU4556497A

    公开(公告)日：1998-05-05

    申请号：AU4556497

    申请日：1997-09-23

    Applicant: BASF AG

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

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

    Abstract: PCT No. PCT/EP97/05204 Sec. 371 Date Apr. 1, 1999 Sec. 102(e) Date Apr. 1, 1999 PCT Filed Sep. 23, 1997 PCT Pub. No. WO98/15589 PCT Pub. Date Apr. 16, 1998Polytetrahydrofuran, copolymers of tetrahydrofuran and 2-butyne-1,4-diol, diesters of these polymers with C2-C20-monocarboxylic acids or monoesters of these polymers with C1-C10-monocarboxylic acids are prepared by polymerization of tetrahydrofuran in the presence of one of the telogens water, 1,4-butanediol, 2-butyne-1,4-diol, polytetrahydrofuran having a molecular weight of from 200 to 700 Dalton, a C1-C10-monocarboxylic acid or an anhydride of a C2-C20-monocarboxylic acid or a mixture of these telogens over a heterogeneous supported catalyst which comprises a catalytically active amount of an oxygen-containing molybdenum and/or tungsten compound on an oxidic support material and which has been calcined at from 5OO DEG C. to 1OOO DEG C. after application of the precursor compounds of the oxygen-containing molybdenum and/or tungsten compounds onto the support material precursor, wherein the catalyst is activated by treatment with a reducing agent before it is used as a polymerization catalyst.

    METHOD OF PRODUCING POLYTETRAHYDROFURANE
    79.
    发明专利
    METHOD OF PRODUCING POLYTETRAHYDROFURANE 未知

    公开(公告)号：SK38397A3

    公开(公告)日：1997-11-05

    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: A method is disclosed of producing polytetrahydrofurane or polytetrahydrofurane monoesters of C1 - C10 monocarboxylic acids by polymerisation of tetrahydrofurane on a heterogenous catalyst in the presence of one of the following telogens: water, 1,4-butane diol, polytetrahydrofurane with a molecular weight of 200 - 700 Da, a C1 - C10 monocarboxylic acid, or mixtures of these telogens. The catalyst used is a carrier catalyst which contains a catalytically active quantity of an oxygen-containing tungsten or molybdenum compound or mixtures of such compounds on an oxide carrier material and has undergone calcination at temperatures of 500 - 1000 C after the precursors of the oxygen-containing molybdenum and/or tungsten compounds have been deposited on the carrier material precursor.

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