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    IMPROVED PROCESS FOR PREPARING POLYTETRAHYDROFURAN
    83.
    发明专利
    IMPROVED PROCESS FOR PREPARING POLYTETRAHYDROFURAN 未知

    公开(公告)号：CA2273265C

    公开(公告)日：2005-06-21

    申请号：CA2273265

    申请日：1997-11-18

    Applicant: BASF AG

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

    IPC: B01J23/24 ,  C08G65/10 ,  C08G65/20 ,  C08G65/26 ,  C08G65/28

    Abstract: Polytetrahydrofuran, tetrahydrofuran copolymers, diesters or monoesters of these polymers are prepared by polymerizing tetrahydro- furan in the presence of at least one telogen and/or comonomer on a heterogeneous carrier catalyst which contains on an oxidic carrier material as active mass a catalytically active amount of at least one oxygenous molybdenum and/or tungsten compound and, when the precursor compounds of the active mass have been applied to the carrier material precursor, has been calcined at temperatures of between 500 .degree.C and 1000 .degree.C. The catalyst used contains a promotor whic h comprises at least one element or a compound of an element of the 2nd, 3rd including the lanthanides, 5th, 6th, 7th, 8th or 14th group of the periodic system of elements.

    PROCESS FOR PREPARING 1,4-BUTANEDIOL BY CATALYTIC HYDROGENATION OF 1,4-BUTINEDIOL
    84.
    发明专利
    PROCESS FOR PREPARING 1,4-BUTANEDIOL BY CATALYTIC HYDROGENATION OF 1,4-BUTINEDIOL 未知

    公开(公告)号：CA2260810C

    公开(公告)日：2005-05-10

    申请号：CA2260810

    申请日：1997-09-23

    Applicant: BASF AG

    Inventor： KAIBEL GERD ,  PINKOS ROLF ,  WULFF-DORING JOACHIM ,  BROCKER FRANZ JOSEF ,  BECKER RAINER

    IPC: B01J25/02 ,  B01J8/02 ,  B01J8/06 ,  B01J10/00 ,  B01J19/00 ,  B01J19/24 ,  B01J19/26 ,  C07B61/00 ,  C07C29/17 ,  C07C31/20

    Abstract: The invention concerns a process for preparing 1,4-butanediol by continuous catalytic hydrogenation of 1,4-butinediol in that 1,4-butinediol is reacted with hydrogen in the liquid continuous phase in th e presence of a heterogeneous hydrogenation catalyst at temperatures of between 20 and 300 .degree.C, a pressure of between 1 and 20 0 bar and values of the liquid-side mass transfer coefficients k L a, relative to the volume, of between 0.1 s-1 and 1s-1, a) with a catalyst suspended in the reaction medium, wherein, when a packed bubble column is used, it is operated in the upwards mode and at a ratio of the amount of gas leaving the reaction vessel to the amount fed thereto of between 0.99:1 and 0.4:1, or b) is guided upwards in parallel flow throug h a fixed bed reactor operated in the circulating gas mode, the ratio between the amount of gas fed to the reaction vessel and the amount of gas leaving the latter being maintained between 0.99:1 and 0.4:1.

    CATALYST AND METHOD FOR PRODUCING POLYTETRAHYDROFURAN
    85.
    发明专利
    CATALYST AND METHOD FOR PRODUCING POLYTETRAHYDROFURAN 未知

    公开(公告)号：MY118608A

    公开(公告)日：2004-12-31

    申请号：MYPI9805594

    申请日：1998-12-10

    Applicant: BASF AG

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

    IPC: C08G59/68 ,  C08G65/10 ,  C08G65/20 ,  C08G65/26

    Abstract: IN A PROCESS FOR PREPARING POLYTETRAHYDROFURAN, POLYTETRAHYDROFURAN COPOLYMERS ORDIESTERS OR MONOESTERS THEREOF BY POLYMERIZATION OF TETRAHYDROFURAN IN THE PRESENCE OF AT LEAST ONE TELGEN 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 20= 5.5o FOR MONTMORILLONITE, 20=9.0o FOR KAOLIN MEASURED IN THE X-RAY POWDER PATTERN, OF AT LEAST 5:1.

    89.
    发明专利
    未知

    公开(公告)号：ES2170416T3

    公开(公告)日：2002-08-01

    申请号：ES97943884

    申请日：1997-09-23

    Applicant: BASF AG

    Inventor： BECKER RAINER ,  BROCKER FRANZ JOSEF ,  KAIBEL GERD ,  PINKOS ROLF ,  WULFF-DORING JOACHIM

    IPC: B01J25/02 ,  B01J8/02 ,  B01J8/06 ,  B01J10/00 ,  B01J19/00 ,  B01J19/24 ,  B01J19/26 ,  C07B61/00 ,  C07C29/17 ,  C07C31/20

    Abstract: A process for preparing 1,4-butanediol by continuous catalytic hydrogenation of 1,4-butynediol comprises reacting 1,4-butynediol with hydrogen in the liquid continuous phase in the presence of a heterogeneous hydrogenation catalyst at from 20 to 300° C., a pressure of from 1 to 200 bar and values of the liquid-side volumetric mass transfer coefficient kLa of from 0.1 s-1 to 1 s-1a) using a catalyst suspended in the reaction medium, where if a packed bubble column is employed this is operated in the upflow mode and at a ratio of gas leaving the reaction vessel to gas fed to the reaction vessel of from 0.99:1 to 0.4:1, orb) passing the liquid and gas in cocurrent in an upward direction through a fixed-bed reactor operated in the gas-circulation mode while maintaining a ratio of the gas fed to the reaction vessel to gas leaving the reaction vessel of from 0.99:1 to 0.4:1.

    90.
    发明专利
    未知

    公开(公告)号：DE59706114D1

    公开(公告)日：2002-02-28

    申请号：DE59706114

    申请日：1997-09-23

    Applicant: BASF AG

    Inventor： BECKER RAINER ,  BROECKER JOSEF ,  KAIBEL GERD ,  PINKOS ROLF ,  WULFF-DOERING JOACHIM

    IPC: B01J25/02 ,  B01J8/02 ,  B01J8/06 ,  B01J10/00 ,  B01J19/00 ,  B01J19/24 ,  B01J19/26 ,  C07B61/00 ,  C07C29/17 ,  C07C31/20

    Abstract: A process for preparing 1,4-butanediol by continuous catalytic hydrogenation of 1,4-butynediol comprises reacting 1,4-butynediol with hydrogen in the liquid continuous phase in the presence of a heterogeneous hydrogenation catalyst at from 20 to 300° C., a pressure of from 1 to 200 bar and values of the liquid-side volumetric mass transfer coefficient kLa of from 0.1 s-1 to 1 s-1a) using a catalyst suspended in the reaction medium, where if a packed bubble column is employed this is operated in the upflow mode and at a ratio of gas leaving the reaction vessel to gas fed to the reaction vessel of from 0.99:1 to 0.4:1, orb) passing the liquid and gas in cocurrent in an upward direction through a fixed-bed reactor operated in the gas-circulation mode while maintaining a ratio of the gas fed to the reaction vessel to gas leaving the reaction vessel of from 0.99:1 to 0.4:1.

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