公开(公告)号：DE10225926A1

公开(公告)日：2003-12-24

申请号：DE10225926

申请日：2002-06-11

Applicant: BASF AG

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

IPC: C07B61/00 ,  C07C29/149 ,  C07C31/20 ,  C07C29/132 ,  C07D307/20 ,  C07D307/32

Abstract: The present invention relates to a process for preparing optionally alkyl-substituted 1,4-butanediol by two-stage catalytic hydrogenation in the gas phase of C 4 -dicarboxylic acids and/or of derivatives thereof having the following steps: a) introducing a gas stream of a C 4 -dicarboxylic acid or of a derivative thereof at from 200 to 300° C. and from 10 to 100 bar into a first reactor or into a first reaction zone of a reactor and catalytically hydrogenating it in the gas phase to a product which contains mainly optionally alkyl-substituted gamma-butyrolactone; b) introducing the product stream obtained in this way into a second reactor or into a second reaction zone of a reactor at a temperature of from 140° C. to 260° C. and catalytically hydrogenating it in the gas phase to optionally alkyl-substituted 1,4-butanediol; steps a) and b) being carried out at the same pressure; c) removing the desired product from intermediates, by-products and any unconverted reactants; d) optionally recycling unconverted intermediates into one or both hydrogenation stages, said hydrogenation stages each using a catalyst which comprises =5% by weight, preferably from 5 to 95% by weight, in particular from 20 to 90% by weight, of an oxidic support, and the product mixture removed from the first hydrogenation stage being introduced without further purification into the second hydrogenation stage.

公开(公告)号：AU2003246407A1

公开(公告)日：2003-12-22

申请号：AU2003246407

申请日：2003-06-10

Applicant: BASF AG

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

IPC: C07B61/00 ,  C07C29/149 ,  C07C31/20

Abstract: The present invention relates to a process for preparing optionally alkyl-substituted 1,4-butanediol by two-stage catalytic hydrogenation in the gas phase of C 4 -dicarboxylic acids and/or of derivatives thereof having the following steps: a) introducing a gas stream of a C 4 -dicarboxylic acid or of a derivative thereof at from 200 to 300° C. and from 10 to 100 bar into a first reactor or into a first reaction zone of a reactor and catalytically hydrogenating it in the gas phase to a product which contains mainly optionally alkyl-substituted gamma-butyrolactone; b) introducing the product stream obtained in this way into a second reactor or into a second reaction zone of a reactor at a temperature of from 140° C. to 260° C. and catalytically hydrogenating it in the gas phase to optionally alkyl-substituted 1,4-butanediol; steps a) and b) being carried out at the same pressure; c) removing the desired product from intermediates, by-products and any unconverted reactants; d) optionally recycling unconverted intermediates into one or both hydrogenation stages, said hydrogenation stages each using a catalyst which comprises =5% by weight, preferably from 5 to 95% by weight, in particular from 20 to 90% by weight, of an oxidic support, and the product mixture removed from the first hydrogenation stage being introduced without further purification into the second hydrogenation stage.

公开(公告)号：CA2485077A1

公开(公告)日：2003-12-04

申请号：CA2485077

申请日：2003-05-21

Applicant: BASF AG

Inventor： BASSLER PETER ,  ANSMANN ANDREAS ,  FISCHER ROLF-HARTMUTH ,  MELDER JOHANN-PETER ,  BENISCH CHRISTOPH ,  MAIXNER STEFAN ,  LUYKEN HERMANN

IPC: C07C209/84 ,  C07C211/09 ,  C07C211/12 ,  C07C253/34 ,  C07C255/09 ,  C07C255/24

Abstract: The invention relates to a method for reducing the content of an aliphatic, monounsaturated amine (IV) in a mixture (V) containing an aminonitrile (I) o r a diamine (II) or a dinitrile (III) or mixtures thereof and amine (IV), whereby: a) mixture (V) is reacted with an anionic nucleophile (VI) in a quantity ranging from 0.01 to 10 mols per mol of amine (IV) in mixture (V) a t a temperature ranging from 50 to 200 ~C while obtaining mixture (VII), and; b) amino nitrile (I) or diamine (II) or dinitrile (III) or mixtures thereof are removed by distillation from mixture (VII) at a temperature ranging from 50 to 200 ~C and under a pressure ranging from 0.1 to 100 kPa while obtaining a bottom product (VIII). The inventive method is characterized in that: c) an amino nitrile (I) or diamine (II) or dinitrile (III) or mixtures thereof are removed by distillation from bottom product (VIII) at a temperature which is lower than that selected in step b).

公开(公告)号：AU2003222308A1

公开(公告)日：2003-11-17

申请号：AU2003222308

申请日：2003-04-25

Applicant: BASF AG

Inventor： BOTTKE NILS ,  SCHLITTER STEPHAN ,  HESSE MICHAEL ,  WECK ALEXANDER ,  WINDECKER GUNTHER ,  HEYDRICH GUNNAR ,  PINKOS ROLF ,  FISCHER ROLF-HARTMUTH ,  ROSCH MARKUS

IPC: C07D307/33 ,  B01J21/08 ,  B01J23/72 ,  C07B61/00 ,  C07D307/20

Abstract: The present invention relates to a process for preparing unsubstituted or C 1 -C 4 -alkyl-substituted gamma-butyrolactone by catalytic hydrogenation of maleic acid and/or its derivatives in the presence of chromium-free catalyst comprising from 10 to 80% by weight of copper oxide and from 10 to 90% by weight of at least one catalyst support selected from the group consisting of silicon dioxide, titanium dioxide, hafnium dioxide, magnesium silicate, activated carbon, silicon carbide, zirconium dioxide and alpha-aluminum oxide.

公开(公告)号：AU2003214082A1

公开(公告)日：2003-09-16

申请号：AU2003214082

申请日：2003-02-28

Applicant: BASF AG

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

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.

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：BR0115648A

公开(公告)日：2003-09-02

申请号：BR0115648

申请日：2001-11-29

Applicant: BASF AG

Inventor： OHLBACH FRANK ,  BENISCH CHRISTOPH ,  LUYKEN HERMANN ,  ANSMANN ANDREAS ,  FISCHER ROLF-HARTMUTH ,  MELDER JOHANN-PETER ,  BASSLER PETER ,  MAIXNER STEFAN

IPC: C07C209/84 ,  C07C211/09 ,  C07C253/34 ,  C07C255/24

Abstract: A process is provided for reducing the content of a monounsaturated aliphatic amine (III) in a mixture (IV) containing an aminonitrile (I) or a diamine (II), or mixtures thereof, and the amine (III), whereina) the mixture (IV) is reacted with an anionic nucleophile (V),which contains a nucleophilic atom selected from the group comprising oxygen, nitrogen and sulfur,which is capable of taking up an H ion to form an acid with a pKa ranging from 7 to 11, measured in water at 25° C., andwhich has a relative nucleophilicity, measured in methyl perchlorate/methanol at 25° C.,ranging from 3.4 to 4.7 when oxygen is the nucleophilic atom,ranging from 4.5 to 5.8 when nitrogen is the nucleophilic atom, andranging from 5.5 to 6.8 when sulfur is the nucleophilic atom,in an amount ranging from 0.01 to 10 mol per mole of amine (III) in the mixture (IV), to give a mixture (VI), andb) the aminonitrile (I) or the diamine (II), or mixtures thereof, are distilled from the mixture (VI) at a temperature ranging from 50 to 170° C. and a pressure ranging from 0.5 to 100 kPa.

公开(公告)号：AR029914A1

公开(公告)日：2003-07-23

申请号：ARP010101992

申请日：2001-04-27

Applicant: BASF AG

Inventor： OHLBACH FRANK ,  ANSMANN ANDREAS ,  FISCHER ROLF-HARTMUTH ,  MELDER JOHANN-PETER ,  MAIXNER STEFAN ,  BASSLER PETER ,  WINTERLING HELMUT ,  LUYKEN HERMANN

IPC: C08J5/18 ,  C08G69/04 ,  C08G69/14 ,  C08G69/16

Abstract: Procedimientos para la obtencion de caprolactama, así como procedimientos para la obtencion de polímeros usando caprolactama son generalmente conocidos. Los procedimientos de purificacion del producto citado obtenido tienen la desventaja, que son técnicamente complicados y requieren mucha energía, especialmente, por las numerosas etapas de separacion. Se provee un procedimiento que permite obtener polímeros a base de caprolactama de manera técnicamente sencilla y con ahorro de energía, obteniéndose polímeros con índices característicos de producto comparables con polímeros a base de caprolactama purificados mediante procedimientos técnicamente más complicados y con mayor consumo de energía. Procedimiento para la obtencion de un polímero usando caprolactama en donde: a) se hace reaccionar una mezcla (I) que contiene 6-aminocapronitrilo y agua, dando una mezcla (II) que contiene caprolactama, amoníaco, agua componentes de alto punto de ebullicion y componentes de bajo punto de ebullicion, en presencia de un solido que fomenta catalíticamente la reaccion, luego b) se elimina el amoníaco de la mezcla (II), obteniéndose una mezcla (III) que contienen caprolactama, agua, componentes de alto punto de ebullicion y componentes de bajo punto de ebullicion, luego c) se elimina el agua parcial o completamente de la mezcla (III), obteniéndose una mezcla (IV) que contienen caprolactama, componentes de alto punto de ebullicion y componentes de bajo punto de ebullicion, y luego d) se polimeriza la mezcla (IV), así como un polímero obtenido segun este procedimiento, a su uso para la fabricacion de fibras, materiales de estructura plana y cuerpos moldeados, así como a fibras, materiales de estructura plana y cuerpos moldeados obtenidos usando tal polímero.

公开(公告)号：BR0111788A

公开(公告)日：2003-05-20

申请号：BR0111788

申请日：2001-06-13

Applicant: BASF AG

Inventor： LUYKEN HERMANN ,  OHLBACH FRANK ,  FISCHER ROLF-HARTMUTH ,  MELDER JOHANN-PETER ,  BASSLER PETER ,  ANSMANN ANDREAS ,  ACHHAMMER GUENTHER

IPC: C07C209/48 ,  C07C253/34 ,  C07C255/03 ,  C07C255/24

Abstract: The invention relates to a method for removing, by distillation, 6-aminocapronitrile from mixtures that contain 6-aminocapronitrile, adipodinitrile and hexamethylenediamine, by a) removing the hexamethylenediamine from the mixture while obtaining a mixture (I) that has a hexamethylenediamine content of less than 1 wt. -%, b) removing completely or partially the 6-aminocapronitrile from mixture (I) while obtaining a mixture (II) whose content in substances that have a higher boiling point as 6-aminocapronitrile under distillation conditions and that cannot be formed by dimerization reactions when 6-aminocapronitrile is thermally treated is less than 1 wt. -%, and c) completely or partially removing from mixture (II) the hexamethylenediamine that might be present while obtaining a mixture (IV) whose hexamethylenediamine content is higher than that of mixture (II), and a mixture (V) whose hexamethylenediamine content is lower than that of mixture (II).

公开(公告)号：BR0110483A

公开(公告)日：2003-04-08

申请号：BR0110483

申请日：2001-04-30

Applicant: BASF AG

Inventor： BASSLER PETER ,  BAUMANN DIETER ,  FISCHER ROLF-HARTMUTH ,  FUCHS EBERHARD ,  MELDER JOHANN-PETER ,  OHLBACH FRANK

IPC: C07D223/12 ,  C07D201/08

Abstract: A process for the preparation of caprolactam is provided, whereina) a mixture (I) containing 6-aminocapronitrile and water is reacted in the gas phase, in the presence of a catalyst, to give a mixture (II) containing caprolactam, ammonia, water, high-boiling components and low-boiling components,b) ammonia is then removed from the mixture (II) to give a mixture (III) containing caprolactam, water, high-boiling components and low-boiling components,c) water is then removed from the mixture (III) to give a mixture (IV) containing caprolactam, high-boiling components and low-boiling components, andd) a solid (V) containing caprolactam is then obtained from the mixture (IV) by crystallization, the proportion by weight of caprolactam in the solid (V) being greater than in the mixture (IV).