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    231.
    发明专利
    未知

    公开(公告)号：DE10209632A1

    公开(公告)日：2003-09-11

    申请号：DE10209632

    申请日：2002-03-02

    Applicant: BASF AG

    Inventor： WINDECKER GUNTHER ,  WECK ALEXANDER ,  FISCHER ROLF-HARTMUTH ,  ROESCH MARKUS ,  BOTTKE NILS ,  HESSE MICHAEL ,  SCHLITTER STEPHAN ,  BORCHERT HOLGER

    IPC: B01D3/14 ,  C07D307/08 ,  C07D307/04 ,  C08G65/20 ,  C07C27/28

    Abstract: Crude water-containing tetrahydrofuran is purified by passing the crude tetrahydrofuran through three distillation columns, withdrawing water from the bottom of the first column, recycling water-containing tetrahydrofuran from the top of the second column into the first column, passing a sidestream of the first column into the second column, recycling the bottom product of the third column into the first column, and withdrawing a distillate at the top of the first column. Additionally, a sidestream of the second column is passed into the third column and the purified tetrahydrofuran is recovered as the top product of the third column.

    232.
    发明专利
    未知

    公开(公告)号：BR0114428A

    公开(公告)日：2003-08-26

    申请号：BR0114428

    申请日：2001-10-11

    Applicant: BASF AG

    Inventor： DERNBACH MATTHIAS ,  SIGWART CHRISTOPH ,  HESSE MICHAEL ,  MAAS STEFFEN

    IPC: B01J23/44 ,  C07C29/90 ,  C07C31/22

    Abstract: A process is provided for improving the color number of polyhydric alcohols, especially trimethylolpropane, by catalytic hydrogenation, the polyhydric alcohol used in the hydrogenation having been purified by distillation following its preparation, wherein the hydrogenation is carried out in the presence of a macroporous supported heterogeneous catalyst containing, as the active metal, at least one metal of subgroups VII to X of the Periodic Table.

    239.
    发明专利
    未知

    公开(公告)号：DE19959064A1

    公开(公告)日：2001-06-13

    申请号：DE19959064

    申请日：1999-12-08

    Applicant: BASF AG

    Inventor： FRENZEL ANDREA ,  HESSE MICHAEL ,  ANSMANN ANDREAS ,  SCHWAB EKKEHARD

    IPC: B01J23/48 ,  B01J23/50 ,  B01J23/66 ,  B01J35/00 ,  C07B61/00 ,  C07B63/02 ,  C07C7/163 ,  C07C7/167 ,  C07C11/04 ,  C07C11/06 ,  C07C11/08 ,  C07C11/10 ,  C07C11/167 ,  C07C5/03

    Abstract: The invention relates to a catalytic converter for the selective hydrogenation of alkines and dienes in C2-C5 olefin mixtures. Said catalytic system contains (a) a metal from the tenth group of the periodic table of elements, (b) a metal from the eleventh group of the periodic table of elements, (c) optionally, a compound of a metal of the first or second group of the periodic table of elements, whereby said metals are supported on a carrier selected from the group consisting of silicium dioxide, titanium dioxide, zirconium oxides, spinelles, zinc aluminates, zinc titanates, aluminium silicates or mixtures of said substances. The metal stemming from the eleventh group of the periodic table of elements is homogeneously distributed over the cross-section of catalyst particles. The metal stemming from the tenth group of the periodic table of elements is located at the surface-proximate edge layer of said catalyst particles. Said catalytic converter is preferably produced by applying the metal from the eleventh group is preferably applied already during the production of the carrier by dipping it into a solution of a suitable metal salt.

    METHOD OF PRODUCING POLYTETRAHYDROFURANE
    240.
    发明专利
    METHOD OF PRODUCING POLYTETRAHYDROFURANE 未知

    公开(公告)号：SK281653B6

    公开(公告)日：2001-06-11

    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: 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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