公开(公告)号：MX9704864A

公开(公告)日：1997-10-31

申请号：MX9704864

申请日：1995-12-22

Applicant: BASF AG

Inventor： RITZ JOSEF ,  FISCHER ROLF ,  SCHNURR WERNER ,  ACHHAMMER GUNTHER ,  LUYKEN HERMANN ,  FUCHS EBERHARD

IPC: C07D201/08 ,  C07B63/02 ,  C07D201/16

Abstract: La presente invencion se refiere a capronitrilo impuro el cual se purifica por hidrogenacion, un tratamiento posterior en un medio ácido y la destilacion subsecuente en un medio alcalino, mediante un proceso en el cual (a) El 6-amicapronitrilo se convierte en caprolactáma impura mediante la reaccion con agua, (b) los compuestos con punto de ebullicion elevados y los compuestos con puntos de ebullicion elevados y los compuestos con puntos de ebullicion bajos se separan de la caprolactáma impura del paso (b) se trata con hidrogeno a una temperatura de 50 a 150 degree C y de 1.5 a 250 bar en presencia de un catalizador de hidrogenacion y, si se desea, de un solvente para dar una mezcla A. (d) la mezcla A en un solvente se pasa, de 30 a 80 degree C y de 1 a 5 bar, por un intercambiador bionico que contiene gruposácidos terminales para dar una mezcla B1, o (d2) una mezcla a se destila en presencia de ácido sulfurico, cualquier solvente presente se elimina antes de la adicion del ácido sulfurico, para dar una mezcla B2 y (e) la mezcla B1 o la mezcla B2 se destilan en presencia de una base para dar caprolactáma pura.

公开(公告)号：AU4389396A

公开(公告)日：1996-07-24

申请号：AU4389396

申请日：1995-12-22

Applicant: BASF AG

Inventor： RITZ JOSEF ,  FISCHER ROLF ,  SCHNURR WERNER ,  ACHHAMMER GUNTHER ,  LUYKEN HERMANN ,  FUCHS EBERHARD

IPC: C07D201/08 ,  C07B63/02 ,  C07D201/16

Abstract: Crude capronitrile is purified by hydrogenation, subsequent treatment in an acidic medium and subsequent distillation in an alkaline medium, by a process in which (a) 6-aminocapronitrile is converted into crude caprolactam by reaction with water, (b) high boilers and low boilers are separated off from the crude caprolactam from step (a), (c) the crude caprolactam from step (b) is treated with hydrogen at from 50 DEG to 150 DEG C. and from 1.5 to 250 bar in the presence of a hydrogenation catalyst and, if desired, of a solvent to give a mixture A, (d1) mixture A in a solvent is passed, at from 30 DEG to 80 DEG C. and from 1 to 5 bar, over an ion exchanger containing terminal acid groups to give a mixture B1, or (d2) mixture A is distilled in the presence of sulfuric acid, any solvent present being removed before the addition of the sulfuric acid, to give a mixture B2, and (e) mixture B1 or mixture B2 is distilled in the presence of a base to give pure caprolactam.

公开(公告)号：ES2171980T5

公开(公告)日：2006-04-16

申请号：ES97935513

申请日：1997-07-07

Applicant: BASF AG

Inventor： RITZ JOSEF ,  ACHHAMMER GUNTHER ,  FISCHER ROLF ,  FUCHS EBERHARD ,  VOIT GUIDO

IPC: C07C231/06 ,  C07C237/06 ,  C07C253/00 ,  C07C255/24 ,  C07D201/08 ,  C07D201/12 ,  C07D201/16

Abstract: OBTENCION DE CAPROLACTAMA MEDIANTE LA CICLACION DE 6 AMINOCAPRONITRILO EN PRESENCIA DE AGUA Y A ELEVADA TEMPERATURA Y OPCIONALMENTE DE UN CATALIZADOR, ASI COMO DE UN DISOLVENTE, MEDIANTE A) SE SEPARA DEL PRODUCTO DE LA REACCION ("PRODUCTO DE LA REACCION") DE LA CICLACION DE LA CAPROLACTAMA ASI COMO TODOS LOS COMPONENTES QUE LLEGUEN POR ENCIMA DE LA CAPROLACTAMA ("COMPONENTES DE ELEVADO PUNTO DE EBULLICION"); B) LOS COMPONENTES CON ELEVADO PUNTO DE EBULLICION DE LA ETAPA A) SE TRATAN CON ACIDO FOSFORICO Y/O ACIDO POLIFOSFORICO A UNA TEMPERATURA DE 200 A 350 °C, OBTENIENDO EL PRODUCTO DE LA REACCION II; Y C) SEPARAR LA CAPROLACTAMA QUE RESULTA DEL PRODUCTO DE LA REACCION II DE LA ETAPA B); Y OPCIONALMENTE SEPARAR 6 - AMINOCAPRONITRILO DE LOS COMPUESTOS DE ELEVADO PUNTO DE EBULLICION QUE NO HAN REACCIONADO Y EL ACIDO UTILIZADO.

公开(公告)号：CA2209336C

公开(公告)日：2004-02-24

申请号：CA2209336

申请日：1995-12-22

Applicant: BASF AG

Inventor： SCHNURR WERNER ,  LUYKEN HERMANN ,  ACHHAMMER GUNTHER ,  RITZ JOSEF ,  FUCHS EBERHARD ,  FISCHER ROLF

IPC: C07D201/08 ,  C07B63/02 ,  C07D201/16 ,  C07D223/10

Abstract: Cleaning raw caprolactam by hydration, subsequent treatment in an acid mediu m and final distillation in an alkaline medium, in which (a) 6-amino capronitrile is converted into raw caprolactam by reaction with water, (b) difficultly and easily boiling components are removed from the raw caprolactam from step (a); (c) the raw caprolactam from step (b) is treated with hydrogen at a temperature in the 50 to 150 .degree.C range and a pressure in the 1.5 to 250 bar range in the presence of a hydration catalyst and, if desired, a solvent, to give a mixture A;(d1) mixture A is taken at a temperature in the 30 to 80 .degree.C range and a pressure in the 1 to 5 bar range over an ion exchanger containing acid terminal groups to give a mixture B1 or (d2) mixture A is distilled in the presence of sulphuric acid, in which any solvent is removed before the addition of the sulphuric acid to give a mixture B2; a nd (e) mixture B1 or B2 is distilled in the presence of a base to yield pure caprolactam.

公开(公告)号：CA2207942C

公开(公告)日：2003-09-23

申请号：CA2207942

申请日：1995-11-29

Applicant: BASF AG

Inventor： ACHHAMMER GUNTHER ,  FUCHS EBERHARD

IPC: C07D201/08 ,  C07D223/10

Abstract: Method for preparing caprolactam by heating 6-aminocapric acid nitrile in th e presence of heterogeneous catalysts ans water under elevated pressure, where in (a) 6-aminocapric acid nitrile or a mixture containing essentially 6- aminocapric acid nitrile as well as water and a low-boiling or a high-boilin g alcohol is heated in the presence of a heterogeneous catalyst in a reactor A to produce a mixture (I); then (b) mixture (I) is distilled, yielding a head fraction, caprolactam and a bottom product, with any ammonia in mixture (I) being removed prior to distillation; and then (c1) the head fraction is fed into the reactor of step (a), with the head fraction optionally being mixed with the alcohol and/or water and/or 6-aminocapric nitrile used in step (a) before being fed into reactor (A); or (c2) the head fraction, optionally wit h the bottom product from step (b), is fed into a reactor (B), the first fraction optionally being mixed with the alcohol and/or water and/or 6- aminocapric acid nitrile before being fed into reactor (B), and then analogously to step (b) caprolactam is produced by distillation; and either (d1) the bottom product from step (b) is fed into reactor A of step (a); or (d2) optionally water and possibly a low-boiling or a high-boiling alcohol a re added to the bottom productwhich then, analogously to step (a) is heated in a reactor (C) to give a reaction product which is distilled to yield caprolactam; or (d3) water is added to the bottom product which is heated in a reactor (D) without added catalyst to give a reaction product which is distilled to yield caprolactam; or (d4) water and a base are added to the bottom product which is heated in reactor (E) to give a reaction product whi ch is distilled to yield caprolactam.

公开(公告)号：SK12282000A3

公开(公告)日：2001-04-09

申请号：SK12282000

申请日：1999-03-02

Applicant: BASF AG

Inventor： HEINEKE DANIEL ,  SCHNEIDER HEINZ-WALTER ,  THOME ALFRED ,  ACHHAMMER GUNTHER ,  MULLER ULRICH ,  HOFSTADT OTTO

IPC: C01B21/14 ,  C01B21/24 ,  C01B21/26

Abstract: The invention relates to a method for producing hydroxylammonium salts by means of catalytic reduction of nitrogen monoxide with hydrogen in the presence of an acid and a hydrogenating catalyst, whereby the nitrogen monoxide is purified before the catalytic reduction by at least one treatment with porous oxides based on silicon and/or aluminum or with activated carbon.

公开(公告)号：CA2337858A1

公开(公告)日：2000-02-03

申请号：CA2337858

申请日：1999-07-02

Applicant: BASF AG

Inventor： VOIT GUIDO ,  ACHHAMMER GUNTHER ,  MERGER MARTIN ,  REHFINGER ALWIN ,  MELDER JOHANN-PETER ,  FISCHER ROLF ,  OHLBACH FRANK ,  LUYKEN HERMANN ,  ANSMANN ANDREAS ,  BASSLER PETER

IPC: C07B61/00 ,  C07C209/48 ,  C07C209/84 ,  C07C209/86 ,  C07C211/12 ,  C07C253/30 ,  C07C253/34 ,  C07C255/24

Abstract: The invention relates to a method for simultaneous production of 6- aminocapronitrile and hexamethylenediamine from adipodinitrile, comprising t he following steps: a) hydrogenating adipodinitrile in the presence of a cataly st containing an element of the VIII subgroup thereby obtaining a mixture containing 6-aminocapronitrile, hexamethylenediamine, adipodinitrile and hig h boilers; b) distillative separation of hexamethylenediamine from the mixture containing 6-aminocapronitrile, hexamethylenediamine, adipodinitrile and hig h boilers or c1) distillative separating 6-aminocapronitrile and subsequently d1) distillative separation of adipodinitrile or c2) simultaneous distillati ve separation of 6-aminocapronitrile and adipodinitrile into separate fractions . The invention is characterized in that temperatures in the bottoms of the column in steps d1) or c2) are under 185 ~C. The adipodinitrile thus obtaine d contains less impurities than for instance 1-amino-2-cyanocyclopentenes.

公开(公告)号：ES2137556T3

公开(公告)日：1999-12-16

申请号：ES95941035

申请日：1995-11-29

Applicant: BASF AG

Inventor： FUCHS EBERHARD ,  ACHHAMMER GUNTHER

IPC: C07D201/08 ,  C07D223/10

Abstract: An improved process for the preparation of caprolactam by heating 6-aminocapronitrile in the presence of a heterogenous catalyst and water under superatmospheric pressure without rapid deactivation of the catalysts used. The process further includes the addition of a low or high boiling alcohol in the heating phase, after which the products are obtained by distillation. The process further includes a method of working up the top and bottom products of the reactors to achieve higher yields.

公开(公告)号：TR199900067T2

公开(公告)日：1999-03-22

申请号：TR9900067

申请日：1997-07-07

Applicant: BASF AG

Inventor： RITZ JOSEF ,  ACHHAMMER GUNTHER ,  FISCHER ROLF ,  FUCHS EBERHARD ,  VOIT GUIDO

IPC: C07C231/06 ,  C07C237/06 ,  C07C253/00 ,  C07C255/24 ,  C07D201/08 ,  C07D201/12 ,  C07D201/16

Abstract: A process for preparing caprolactam by cyclization of 6-aminocapronitrile in the presence of water at elevated temperature and in the presence or absence of a catalyst and a solvent, comprises a) removing from the cyclization reaction effluent ("reaction effluent I") caprolactam and all components boiling higher than caprolactam ("high boilers"), b) treating the high boilers of stage a) with phosphoric acid and/or polyphosphoric acid at from 200 to 350 DEG C. to obtain a reaction effluent II, and c) removing caprolactam formed and any 6-aminocapronitrile from reaction effluent II of stage b) to obtain separation from unconverted high boilers and acid used.

公开(公告)号：MX9800905A

公开(公告)日：1998-05-31

申请号：MX9800905

申请日：1996-07-26

Applicant: BASF AG

Inventor： ACHHAMMER GUNTHER ,  ROPER MICHAEL

IPC: C07C67/54 ,  C07C69/716

Abstract: Los ésteres 5-formilvaléricos se separan, en un rendimiento no menor de 90%, por destilacion de una mezcla del éster formilvalérico de éster 5-formilvalérico y cualquiera de éster 3- o 4-formilvalérico o una mezcla de los ésteres 3- y 4-formilvaléricos, en donde los radicales éster de los ésteres formilvaléricos respectivos son idénticos, en donde el éster 3- o 4-formilvalérico o una mezcla de éstos se separa del éster 5-formilvalérico en una columna de destilacion a una presion en el rango desde 2 a 100 mbar y una temperatura no mayor de 150 degree C (medida como la temperatura en la parte inferior de la columna( y los ésteres utilizando son los metil o etil ésteres correspondientes, en donde la pureza del éster 5-formilvalérico es no menos de 98% y. como impureza, el éster 4-formilvalérico está presente en una cantidad no mayor de 100ppm.