公开(公告)号：DE502004004109D1

公开(公告)日：2007-07-26

申请号：DE502004004109

申请日：2004-09-24

Applicant: BASF AG

Inventor： REUTEMANN WERNER ,  WEBER THEODOR ,  ROSS KARL-HEINZ ,  JULIUS MANFRED

IPC: C07C209/86 ,  C07C209/16 ,  C07C209/90 ,  C07C211/04

Abstract: The invention relates to a method of avoiding corrosion in the separation of methylamine from a product stream ( 10 ) which is obtained in the preparation of methylamines by gas-phase reaction of methanol and ammonia and includes monomethylamine, dimethylamine, trimethylamine, ammonia and methanol as components, where ammonia is separated off by pure distillation in a first column ( 1 ), the remaining components of the product stream obtained as bottoms ( 12 ) are fed to a second column ( 2 ). Trimethylamine ( 14 ) is separated off in the second column ( 2 ) by extractive distillation with introduction of water. The further components of the product stream obtained as bottoms ( 15 ) from the second column ( 2 ) are fed to a third column ( 3 ), in which monomethylamine and dimethylamine are separated off at the top. The monomethylamine and dimethylamine are separated by distillation in a fourth column ( 4 ). To avoid corrosion alkali metal hydroxide is added to the second or third column ( 3 ).

公开(公告)号：BRPI0413792A

公开(公告)日：2006-11-07

申请号：BRPI0413792

申请日：2004-09-24

Applicant: BASF AG

Inventor： REUTEMANN WERNER ,  WAMBSGANSS ROLF ,  POPLOW FRANK ,  WEBER THEODOR ,  ROSS KARL-HEINZ ,  JULIUS MANFRED

IPC: C07C209/16 ,  C07C211/04

Abstract: The invention relates to a process for preparing methylamines by gas-phase reaction of methanol and ammonia as starting materials at a pressure in the range from 15 to 30 bar in the presence of heterogeneous catalyst. The starting materials are vaporized in one or more heat exchangers (1, 2, 3), superheated to produce a feed gas stream and subsequently fed into a reactor (4), with the mixing of the starting materials being able to be carried out in the feed stream to one of the heat exchangers (1, 2, 3) or at any desired position in a heat exchanger (1, 2, 3). A product gas stream comprising monomethylamine, dimethylamine and trimethylamine and also reaction by-products is taken off from the reactor (4). To control the reactor inlet temperature of the starting materials to a temperature in the range from 360° C. to 370° C., all or some of the feed gas stream or the product gas stream is passed through an adjustable valve (5) in order to vary the pressure and thus the condensation temperature.

公开(公告)号：DE50207212D1

公开(公告)日：2006-07-27

申请号：DE50207212

申请日：2002-08-30

Applicant: BASF AG

Inventor： RUDLOFF MARTIN ,  STOPS PETER ,  HENKES ERHARD ,  SCHMIDTKE HELMUT ,  FISCHER ROLF-HARTMUTH ,  JULIUS MANFRED ,  LEBKUECHER ROLF ,  ROSS KARL-HEINZ

IPC: C07D207/26 ,  C07D201/08 ,  C07D207/267

Abstract: A process for continuously preparing 2-pyrrolidone by reacting gamma-butyrolactone with ammonia in the liquid phase in the presence of water, wherein the reaction is carried out at a temperature of from 275 to 300° C. and an absolute pressure of from 140 to 180 bar.

公开(公告)号：ES2201843T3

公开(公告)日：2004-03-16

申请号：ES99973013

申请日：1999-11-25

Applicant: BASF AG

Inventor： RUIDER GUNTHER ,  ROSS KARL-HEINZ

IPC: C07C213/04 ,  C07C213/10 ,  C07C215/08

Abstract: Method of purifying triethanolamine prepared by reacting aqueous ammonia with ethylene oxide in the liquid phase under pressure and at elevated temperature by removing excess ammonia, water and monoethanolamine from the reaction product, reacting the resulting crude product with ethylene oxide at temperatures of from 110 to 180° C., and then rectifying the mixture in the presence of phosphorous or hypophosphorous acid or compounds thereof.

公开(公告)号：CZ292724B6

公开(公告)日：2003-12-17

申请号：CZ199996

申请日：1996-07-04

Applicant: BASF AG

Inventor： BECKER RAINER ,  KERSTEN SIEGFRIED ,  ROSS KARL-HEINZ ,  STADLER KLAUS PETER ,  HARRO WACHE ,  WAMBACH LUDWIG ,  WEYER HANS-JURGEN

IPC: C07C209/12 ,  C07C211/63

Abstract: In the present invention, there is described a process for preparing (2-chloroethyl)-ammonium chloride by reacting 1,2-dichloroethane with trimethyl amine. Which preparation process comprises mixing the 1,2-dichloroethane with the trimethyl amine at a temperature ranging from 50 to 100 degC and then increasing stepwise or continuously the temperature to 120 to 200 degC.

公开(公告)号：ID28966A

公开(公告)日：2001-07-19

申请号：ID20011360

申请日：1999-11-25

Applicant: BASF AG

Inventor： RUIDER GUENTHER ,  ROSS KARL-HEINZ

IPC: C07C213/04 ,  C07C213/10 ,  C07C215/08

Abstract: Method of purifying triethanolamine prepared by reacting aqueous ammonia with ethylene oxide in the liquid phase under pressure and at elevated temperature by removing excess ammonia, water and monoethanolamine from the reaction product, reacting the resulting crude product with ethylene oxide at temperatures of from 110 to 180° C., and then rectifying the mixture in the presence of phosphorous or hypophosphorous acid or compounds thereof.

公开(公告)号：BRPI0414626A

公开(公告)日：2006-11-07

申请号：BRPI0414626

申请日：2004-09-24

Applicant: BASF AG

Inventor： REUTEMANN WERNER ,  WEBER THEODOR ,  ROSS KARL-HEINZ ,  JULIUS MANFRED

IPC: C07C209/86 ,  C07C211/04 ,  C07C209/90 ,  C07C209/16

Abstract: The invention relates to a method of avoiding corrosion in the separation of methylamine from a product stream ( 10 ) which is obtained in the preparation of methylamines by gas-phase reaction of methanol and ammonia and includes monomethylamine, dimethylamine, trimethylamine, ammonia and methanol as components, where ammonia is separated off by pure distillation in a first column ( 1 ), the remaining components of the product stream obtained as bottoms ( 12 ) are fed to a second column ( 2 ). Trimethylamine ( 14 ) is separated off in the second column ( 2 ) by extractive distillation with introduction of water. The further components of the product stream obtained as bottoms ( 15 ) from the second column ( 2 ) are fed to a third column ( 3 ), in which monomethylamine and dimethylamine are separated off at the top. The monomethylamine and dimethylamine are separated by distillation in a fourth column ( 4 ). To avoid corrosion alkali metal hydroxide is added to the second or third column ( 3 ).

公开(公告)号：MXPA06003175A

公开(公告)日：2006-06-23

申请号：MXPA06003175

申请日：2004-09-24

Applicant: BASF AG

Inventor： ROSS KARL-HEINZ

IPC: C07C209/16 ,  C07C209/86 ,  C07C209/90 ,  C07C211/04

Abstract: La invencion se relaciona con un metodo para evitar la corrosion en la separacion de metilamina de una corriente (10) de producto que se obtiene en la preparacion de metilaminas mediante reaccion de fase de gas de metanol y amoniaco y comprende monometilamina, dimetilamina, trimetilamina, amoniaco y metanol como componentes, en donde el amoniaco se separa mediante destilacion pura en una primera columna (1), los componentes restantes de la corriente de producto obtenida como sedimentos (12) se alimentan a una segunda columna (2). Trimetilamina (14) se separa en la segunda columna (2) mediante destilacion de extraccion con introduccion de agua. Los componentes adicionales de la corriente de producto obtenidos como sedimentos (15) de la segunda columna (2) se alimentan a una tercera columna (3), en la que monometilamina y dimetilamina se separan en la parte superior. La monometilamina y dimetilamina se separan por destilacion en una cuarta columna (4). Para evitar corrosion se anade hidroxido de metal alcalino a la segunda o tercera columna (3).

公开(公告)号：MXPA06002571A

公开(公告)日：2006-06-05

申请号：MXPA06002571

申请日：2004-09-24

Applicant: BASF AG

Inventor： ROSS KARL-HEINZ

IPC: C07C209/16 ,  C07C211/04

Abstract: La invencion se refiere a un proceso para preparar metilamina por medio de la reaccion en fase gaseosa de metanol y amoniaco como los materiales iniciales a una presion en el rango desde 15 a 30 bar, en presencia de un catalizador heterogeneo. Los materiales iniciales se vaporizan en uno o mas intercambiadores de calor (1, 2, 3), supercalentados para producir una corriente gaseosa de alimentacion y se alimentan subsecuentemente a un reactor (4), con el mezclado de los materiales iniciales que se puede llevar a cabo en la corriente de alimentacion a una de los intercambiadores de calor (1, 2, 3) o en cualquier posicion deseada en un intercambiador de calor (1, 2, 3). Una corriente gaseosa de productos que comprende monometilamina, dimetilamina y trimetilamina y tambien los productos secundarios de la reaccion se saca del reactor (4). Para controlar la temperatura de admision del reactor de los materiales iniciales a una temperatura en el rango desde 360 degree C a 370 degree C, toda o algo de la corriente gaseosa de alimentacion o la corriente gaseosa de productos se pasa a traves de una valvula (5) ajustable, para variar la presion y por lo tanto la temperatura de condensacion.

公开(公告)号：AU2002352013A1

公开(公告)日：2003-07-09

申请号：AU2002352013

申请日：2002-11-15

Applicant: BASF AG

Inventor： HENKES ERHARD ,  SCHMIDTKE HELMUT ,  FISCHER ROLF-HARTMUTH ,  JULIUS MANFRED ,  LEBKUCHER ROLF ,  ROSS KARL-HEINZ ,  RUDLOFF MARTIN ,  STOPS PETER

IPC: C07D207/26 ,  C07D207/267

Abstract: Process for the continuous preparation of N-methyl-2-pyrrolidone (NMP) by reacting gamma-butyrolactone (GBL) with monomethylamine (MMA) in the liquid phase, wherein GBL and MMA are used in a molar ratio of from 1:1.08 to 1:2 and the reaction is carried out at from 320 to 380° C. and an absolute pressure of from 70 to 120 bar.