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    23.
    发明专利
    未知

    公开(公告)号：AT365712T

    公开(公告)日：2007-07-15

    申请号：AT03743348

    申请日：2003-02-28

    Applicant: BASF AG

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

    IPC: C07D207/26 ,  B01J23/72 ,  B01J23/80 ,  C07B61/00 ,  C07D207/267 ,  C07D307/08

    Abstract: A process for coproducing alkyl-substituted or unsubstituted THF and pyrrolidones by catalytically hydrogenating C 4 -dicarboxylic acids and/or derivatives thereof in the gas phase in the presence of copper catalysts and reacting GBL with ammonia or primary amines to give pyrrolidones comprises a) hydrogenating C 4 -dicarboxylic acids and/or derivatives thereof in the gas phase at from 200 to 300° C., from 0.1 to 100 bar, catalyst hourly space velocities of from 0.01 to 1 kg of reactant/l of catalyst*hour and reactant/hydrogen molar ratios of from 20 to 800 in the presence of catalysts comprising copper, aluminum and/or zinc to give mixtures of THF and GBL, b) separating the hydrogenation effluent obtained by distillation into a THF/water mixture as the top product and a GBL-containing bottom product, c) separating the THF/water mixture from step b) in a distillation facility consisting of three columns by withdrawing water from the bottom of the first column, recycling water-containing THF from the second into the first column, passing a side stream of the first 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, wherein a side stream of the second column is passed into the third column and the pure THF is obtained as the top product of the third column, d) recovering GBL from the GBL-containing bottom product from step b) by distillation and e) reacting the GBL obtained with ammonia or amines to give corresponding pyrrolidones.

    24.
    发明专利
    未知

    公开(公告)号：AT299872T

    公开(公告)日：2005-08-15

    申请号：AT03709732

    申请日：2003-02-28

    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

    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.

    25.
    发明专利
    未知

    公开(公告)号：DE10357715A1

    公开(公告)日：2005-07-14

    申请号：DE10357715

    申请日：2003-12-09

    Applicant: BASF AG

    Inventor： ROESCH MARKUS ,  PINKOS ROLF ,  HESSE MICHAEL ,  SCHLITTER STEPHAN ,  JUNICKE HENRIK ,  SCHUBERT OLGA ,  WECK ALEXANDER ,  WINDECKER GUNTHER

    IPC: C07D307/08 ,  C07D307/33 ,  C07C31/20 ,  C07C29/149 ,  B01J23/80

    Abstract: A process for variably preparing mixtures of optionally alkyl-substituted BDO, GBL and THF by two-stage hydrogenation in the gas phase of C 4 dicarboxylic acids and/or derivatives thereof, which comprises a) hydrogenating in a gas phase a gas stream of C 4 dicarboxylic acids and/or derivatives thereof over a particular catalyst at a particular pressure and temperature to give a stream mainly containing of optionally alkyl-substituted GBL and THF, b) removing any succinct anhydride, c) converting the products remaining predominantly in the gas phase in the partial condensation, THF, water and GBL to give a stream comprising a mixture of BDO, GBL and THF, d) removing the hydrogen from the products and recycling it into the hydrogenation, e) distillatively separating the products, THF, BDO, GBL and water, if appropriate recycling a GBL-rich stream or if appropriate discharging it, and working up BDO, THF and GBL distillatively, and setting the ratio of the products, THF, GBL and BDO, relative to one another within the range from 10 to 100% by weight of THF, from 0 to 90% by weight of GBL and from 0 to 90% by weight of BDO only by varying the temperatures in the two hydrogenation zones and also if appropriate the GBL recycle stream.

    26.
    发明专利
    未知

    公开(公告)号：AT287398T

    公开(公告)日：2005-02-15

    申请号：AT02758298

    申请日：2002-07-03

    Applicant: BASF AG

    Inventor： SCHLITTER STEPHAN ,  BORCHERT HOLGER ,  HESSE MICHAEL ,  SCHUBERT MARKUS ,  BOTTKE NILS ,  FISCHER ROLF-HARTMUTH ,  ROESCH MARKUS ,  HEYDRICH GUNNAR ,  WECK ALEXANDER

    IPC: B01J23/89 ,  B01J37/02 ,  B01J37/03 ,  C07D307/08 ,  C07D307/33 ,  C07D315/00

    Abstract: A catalyst (I) for the gas phase hydrogenation of 4C-dicarboxylic acids and/or derivatives, preferably maleic acid anhydride, comprises copper oxide (20-94 wt.%), palladium and/or a palladium compound (0.005-5 wt.%) and an oxide support (2-79.995 wt.%) comprising oxides of Al, Si, Zn, La, Ce, Group IIIa-VIIIa elements and/or Group IA and II elements. Independent claims are also included for: (i) a process for the production of the catalyst (I) by impregnation of an oxide supported copper oxide catalyst with a solution of a soluble palladium compound, drying and optionally calcining; and (ii) a process for the gas phase hydrogenation of 4C-dicarboxylic acids and/or derivatives, preferably maleic acid anhydride in the presence of the catalyst (I).

    27.
    发明专利
    未知

    公开(公告)号：DE50201527D1

    公开(公告)日：2004-12-16

    申请号：DE50201527

    申请日：2002-06-24

    Applicant: BASF AG

    Inventor： SCHLITTER STEPHAN ,  SIGWART CHRISTOPH ,  DOERFLINGER WALTER ,  HESSE MICHAEL ,  FISCHER ROLF-HARTMUTH

    IPC: B01J21/16 ,  B01J35/10 ,  C08G65/20 ,  C08G65/26

    Abstract: Polytetrahydrofuran, polytetrahydrofuran copolymers, diesters or monoesters of these polymers are prepared by polymerization of tetrahydrofuran in the presence of at least one telogen and/or comonomer, which is in the form of shaped catalyst bodies or catalyst particles having a volume of the individual shape of the body or particle of at least 0.05 mm 3 , preferably at least 0.2 mm 3 , in particular 1 mm 3 , and has at least one of the features a) and b): a) a pore radius distribution having at least one maximum in the pore radius range from 100 to 5000 Å, b) a pore volume of catalyst pores having radii of 200-3000 Å of greater than 0.05 cm 3 /g and/or a pore volume of pores having radii of 200-5000 Å of greater than 0.075 cm 3 /g and/or a pore volume of pores having radii of >200 Å of greater than 0.1 cm 3 /g.

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