公开(公告)号：DE10209633A1

公开(公告)日：2003-09-11

申请号：DE10209633

申请日：2002-03-02

Applicant: BASF AG

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

IPC: B01J23/72 ,  B01J23/80 ,  C07B61/00 ,  C07D207/26 ,  C07D207/267 ,  C07D307/08 ,  B01J23/00 ,  C08G65/20 ,  C07D307/04 ,  C07C27/28

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.

公开(公告)号：AT238265T

公开(公告)日：2003-05-15

申请号：AT01915130

申请日：2001-01-10

Applicant: BASF AG

Inventor： ZEHNER PETER ,  MACHHAMMER OTTO ,  HECHLER CLAUS ,  WECK ALEXANDER ,  OLBERT GERHARD ,  STABEL UWE

IPC: F28F3/00 ,  B01J8/02 ,  B01J19/24 ,  B01J35/04 ,  C07C51/215 ,  C07C57/145 ,  C07D307/60

Abstract: A process for the preparation of maleic anhydride by heterogeneously catalyzed gas-phase oxidation in a reactor with feed for the reaction mixture at one end of the reactor and discharge of the product mixture at the opposite end of the reactor, and with devices for dissipating the heat of reaction which are arranged in the reactor interior and through which a heat-exchange medium flows and which are designed as heat-exchanger plates.

公开(公告)号：DE10119737A1

公开(公告)日：2002-10-24

申请号：DE10119737

申请日：2001-04-23

Applicant: BASF AG

Inventor： RAHN RALF-THOMAS ,  WECK ALEXANDER ,  KAIBEL GERD

IPC: C07D307/60 ,  C07C51/215 ,  C07C51/44 ,  C07C51/573 ,  C07C57/145 ,  C07C57/15 ,  C07B63/00 ,  B01D3/00

Abstract: Purification of an organic solvent used for the absorption of maleic acid anhydride from a gaseous mixture Purification of an organic solvent used for the absorption of maleic acid anhydride from a gaseous mixture, comprises: (i) separating the maleic acid anhydride from the solvent; (ii) taking a side stream from the solvent stream; (iii) distilling and recycling to the solvent loop; and (iv) separating a low boiling fraction and a high boiling fraction from essentially pure solvent which is recycled.

公开(公告)号：DE10061553A1

公开(公告)日：2002-06-13

申请号：DE10061553

申请日：2000-12-11

Applicant: BASF AG

Inventor： BORCHERT HOLGER ,  SCHLITTER STEPHAN ,  ROESCH MARKUS ,  FISCHER ROLF-HARTMUTH ,  RAHN RALF-THOMAS ,  WECK ALEXANDER

IPC: B01J23/72 ,  B01J23/76 ,  B01J23/80 ,  B01J35/10 ,  B01J37/00 ,  B01J37/03 ,  C07B61/00 ,  C07D307/08 ,  C07D307/33 ,  C07D315/00

Abstract: The invention relates to a hydrogenation catalyst, particularly suitable for the hydrogenation of maleic anhydride and derivatives thereof to give THF or derivatives thereof. Said hydrogenation catalyst comprises copper oxide and at least one further metal, or a compound thereof, from the group comprising Al, Si, Zn, La, Ce, elements of groups IIIA to VIIIA and groups IA and IIA, with a pore volume of >/= 0.01 ml/g for pore diameters > 50nm and a ratio of pore volume for macropores with a diameter > 50nm to the total pore volume for pores with a diameter > 4 nm of > 10 %.

公开(公告)号：AU7239101A

公开(公告)日：2001-11-20

申请号：AU7239101

申请日：2001-05-03

Applicant: BASF AG

Inventor： KAIBEL GERD ,  WECK ALEXANDER ,  RAHN RALF-THOMAS

IPC: B01D3/14 ,  B01D3/26 ,  C07C27/28 ,  C07C29/80 ,  C07C31/20 ,  C07D307/08 ,  C07D307/33

Abstract: In a process for the continuous fractional distillation of mixtures comprising tetrahydrofuran, gamma-butyrolactone and/or 1,4-butanediol to give at least three fractions, the fractionation is carried out in an assembly of distillation columns comprising at least one dividing wall column or at least one assembly of thermally coupled conventional distillation columns.

公开(公告)号：DK0795535T3

公开(公告)日：2001-11-19

申请号：DK97101728

申请日：1997-02-04

Applicant: BASF AG

Inventor： DAMS ALBRECHT ,  AICHINGER HEINRICH ,  NESTLER GERHARD ,  EXNER HERBERT ,  IFFLAND GABRIELE ,  WECK ALEXANDER ,  HERBST HOLGER

IPC: B01J27/02 ,  B01J31/02 ,  C07B41/12 ,  C07B61/00 ,  C07C67/08 ,  C07C67/54 ,  C07C69/54

公开(公告)号：DE10021703A1

公开(公告)日：2001-11-08

申请号：DE10021703

申请日：2000-05-04

Applicant: BASF AG

Inventor： KAIBEL GERD ,  WECK ALEXANDER ,  RAHN RALF-THOMAS

IPC: B01D3/14 ,  B01D3/26 ,  C07C27/28 ,  C07C29/80 ,  C07C31/20 ,  C07D307/08 ,  C07D307/33

Abstract: Continuous distillative separation into at least 3 fractions of mixtures containing tetrahydrofuran (THF), psi -butyrolactone and/or 1,4-butanediol is effected in an arrangement of distillation columns with at least one partition or in an arrangement of heat-coupled conventional distillation columns.

公开(公告)号：DE10000584A1

公开(公告)日：2001-07-12

申请号：DE10000584

申请日：2000-01-10

Applicant: BASF AG

Inventor： ZEHNER PETER ,  MACHHAMMER OTTO ,  HECHLER CLAUS ,  WECK ALEXANDER ,  OLBERT GERHARD ,  STABEL UWE

IPC: F28F3/00 ,  B01J8/02 ,  B01J19/24 ,  B01J35/04 ,  C07C51/215 ,  C07C57/145 ,  C07D307/60

Abstract: The invention relates to a method for the production of maleic acid anhydride by heterogeneously catalysed gas phase oxidation in a reactor. Said reactor has a reaction mixture inlet at one end of the reactor and a product mixture outlet at the opposite end of the reactor and, within the reactor volume, a device for removal of the heat of reaction, which is arranged in the form of heat exchanger plates, with a heat exchange agent flowing through said plates.

公开(公告)号：DE19817113A1

公开(公告)日：1999-10-21

申请号：DE19817113

申请日：1998-04-17

Applicant: BASF AG

Inventor： AUER HEINZ ,  CIPRIAN JUERGEN ,  FRANZ LOTHAR ,  FRANZISCHKA WOLFGANG ,  IFFLAND GABRIELE ,  WECK ALEXANDER ,  WEINLE WERNER

IPC: C08G65/20 ,  C08G65/30 ,  C08G65/32 ,  C08G65/331

Abstract: In the transesterification of acyloxy-containing polymers with alcohols to give the corresponding hydroxy-containing polymers, passing the reaction mixture from a pre-reactor into a column where the product moves in a counterflow to alcohol vapor to cause phase separation. Process for preparing hydroxy group-containing polymers, especially polytetrahydrofuran with terminal OH groups, from the corresponding acyloxy-containing polymers (A) by transesterification with alcohols (B) in the presence of an alkali(ne earth)-containing catalyst (C), comprises charging the (A), (B) and (C) to a pre-reactor (I) in which at least partial conversion to the OH-containing polymer takes place, then feeding the charge to the upper part (IIa) of a distillation column (II), to the lower part (IIb) of which additional alcohol (B) is fed in the vapor phase.

公开(公告)号：CA2418972C

公开(公告)日：2010-03-23

申请号：CA2418972

申请日：2001-08-16

Applicant: BASF AG

Inventor： ISAK HEINZ ,  SENDHOFF NORBERT ,  SCHUTZ FRANZ ,  THERRE JORG ,  DROGEMULLER MICHAEL ,  FRANKE DIRK ,  MUNZINGER MANFRED ,  WECK ALEXANDER ,  BURKART KIRSTEN

IPC: C07D285/34 ,  A01N25/12 ,  A01N43/88

Abstract: A method for the production of a particle-containing preparation of tetrahydro-3,5-dimethyl-1,3,5-thiadiazin-2-thione, by combination of a first aqueous solution containing methylammonium-N-methyldithiocarbamate with a second solution containing formaldehyde and separation and drying of the solid formed is disclosed. The invention is characterised in that the first and second solutions are combined such that over the duration of the reaction the ratio of the concentration of dithiocarbamate functions and formaldehyde in the reaction mixture remains essentially constant over time.