公开(公告)号：ES2196065T3

公开(公告)日：2003-12-16

申请号：ES95924256

申请日：1995-06-16

Applicant: BASF AG

Inventor： FUCHS EBERHARD ,  WITZEL TOM

IPC: C07D201/08

Abstract: Cyclic lactams are prepared by reacting an aminocarboxylic acid compound of the formula I H2N-(CH2)m-COR1 I where R1 is -OH, -O-C1-C12-alkyl or -NR2R3 and R2 and R3, independently of one another, are each hydrogen, C1-C12-alkyl or C5-C8-cycloalkyl and m is an integer from 3 to 12, with water by a process in which the reaction is carried out in the liquid phase using a heterogeneous catalyst.

公开(公告)号：MXPA02009714A

公开(公告)日：2003-04-22

申请号：MXPA02009714

申请日：2001-04-30

Applicant: BASF AG

Inventor： FUCHS EBERHARD

IPC: C07D223/12 ,  C07D201/08

Abstract: Procedimiento para la obtencion de caprolactama, caracterizado porque a) se hace reaccionar una mezcla (I) que contiene 6- aminocapronitrilo ("ACN") y agua en la fase gaseosa, dando una mezcla (II) que contiene caprolactama, amoniaco, agua, componentes de alto punto de ebullicion y componentes de bajo punto de ebullicion, en presencia de un catalizador, luego b) se elimina el amoniaco de la mezcla (II), obteniendose una mezcla (III) que contiene caprolactama, agua, componentes de alto punto de ebullicion y componentes de bajo punto de ebullicion, luego c) se elimina el agua de la mezcla (III), obteniendose una mezcla (IV) que contiene caprolactama, componentes de alto punto de ebullicion y componentes de bajo punto de ebullicion, y luego d) se prepara a partir de la mezcla (IV) por cristalizacion un solido (V) que contiene caprolactama, siendo la proporcion ponderal de caprolactama mas alta en el solido (V) que en la mezcla (IV).

公开(公告)号：CZ291034B6

公开(公告)日：2002-12-11

申请号：CZ146997

申请日：1995-11-14

Applicant: BASF AG

Inventor： ACHHAMMER GUNTHER ,  FUCHS EBERHARD

IPC: C07D201/08 ,  C07D223/10

Abstract: The present invention relates to a process for preparing caprolactam by reacting a solution of 6-aminocapronitrile with water in the liquid phase at elevated temperatures by a process in which (a) an aqueous solution of 6-aminocapronitrile in the liquid phase is heated without the addition of a catalyst in a reactor A to give a mixture I consisting essentially of 50 to 98 percent by weight of water, and 2 to 50 percent by weight of a mixture containing 50 to 90 percent by weight of caprolactam and 10 to 50 percent by weight of a high-boiling fraction (high boiler), then (b) the water is removed from the resulting mixture I to give a mixture II consisting essentially of 50 to 90 percent by weight of caprolactam and the 10 to 50 percent by weight of the high-boiling fraction, then (c) the caprolactam and the high-boiling fraction from the mixture II are separated from one another by distillation, and then either (d1) the high-boiling fraction from stage (c) is fed into the reactor A of stage (a) or (d2) the high-boiling fraction is heated similarly to stage (a) in a further reactor B to a temperature in the range of 250 to 350 degC and then worked up similarly to stages (b) and (c) to give further caprolactam, or (d3) the high-boiling fraction is heated under reduced pressure to a temperature in the range of 200 to 400 degC and in the presence of a base in a reactor C and the reacted mixture is worked up by distillation to give caprolactam.

公开(公告)号：PT729453E

公开(公告)日：2002-07-31

申请号：PT95900739

申请日：1994-11-15

Applicant: BASF AG

Inventor： WITZEL TOM ,  FUCHS EBERHARD

IPC: C07D201/08 ,  C07D223/10

Abstract: PCT No. PCT/EP94/03782 Sec. 371 Date May 16, 1996 Sec. 102(e) Date May 16, 1996 PCT Filed Nov. 15, 1994 PCT Pub. No. WO95/14665 PCT Pub. Date Jun. 1, 1995Cyclic lactams are prepared by reacting amino carbonitriles with water in liquid phase in a fixed bed reactor in the presence of heterogeneous catalysts which have no soluble constituents under the reaction conditions.

公开(公告)号：UA45346C2

公开(公告)日：2002-04-15

申请号：UA97010350

申请日：1995-06-16

Applicant: BASF AG

Inventor： FUCHS EBERHARD ,  WITZEL TOM

IPC: C07D201/08

Abstract: Одержанняциклічнихлактамівздійснюєтьсячерезреакціюз водоюсполукамінокарбоксилічноїкислотизагальноїформули H2N-(CH2)m-COR1, вякій R1 являєсобою OH, -O-C1-C12-алкіл, або–NR2-R3, R2 і R3 - незалежніпозначенняводню, C1-C12 - алкіл, і C5-C8 циклоалкіл, а m - цілечисловід 3 до 12. Реакціяпроводитьсяу рідкійфазіз використаннямгетерогеннихкаталізаторів.

公开(公告)号：DE10021192A1

公开(公告)日：2001-11-08

申请号：DE10021192

申请日：2000-05-03

Applicant: BASF AG

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

IPC: C07D223/12 ,  C07D201/08 ,  C07D223/10

Abstract: The invention relates to a method for producing caprolactam, which is characterized by a) reacting, in the presence of a catalyst, a mixture (I) that contains 6-aminocapronitrile and water in the gaseous phase to give a mixture (II) that contains caprolactam, ammonia, water, high-boiling and low-boiling substances, subsequently b) removing the ammonia from mixture (II), thereby producing a mixture (III) that contains caprolactam, water, high-boiling and low-boiling substances, c) removing the water from mixture (III), thereby producing a mixture (IV) that contains caprolactam, high-boiling and low-boiling substances, and finally d) obtaining by crystallization a caprolactam-containing solid substance (V) from mixture (IV), the weight percentage of caprolactam in the solid substance (V) being higher than in mixture (IV).

公开(公告)号：AT205827T

公开(公告)日：2001-10-15

申请号：AT95940996

申请日：1995-11-22

Applicant: BASF AG

Inventor： FUCHS EBERHARD ,  WITZEL TOM

IPC: C07D201/12

Abstract: Caprolactam is prepared by cleaving oligomers or polymers containing essentially the repeating unit -[-N(H)-(CH2)5-C(O)-]- in the presence of a catalyst at elevated temperatures by a process in which the cleavage is carried out in the liquid phase in the presence of a heterogeneous catalyst and of an organic solvent.

公开(公告)号：BG104699A

公开(公告)日：2001-05-31

申请号：BG10469900

申请日：2000-08-17

Applicant: BASF AG

Inventor： MOHRSCHLADT RALF ,  HILDEBRANDT VOLKER ,  PIPPER GUNTER ,  FUCHS EBERHARD

IPC: C08G69/18 ,  C08G69/20

Abstract: The invention relates to a method for producing polyamides by polymerization of lactams in the presence of metal oxides as heterogeneous catalysts. According to the invention, the metal oxides are placed inside a mold which permits mechanical separation from the reaction mixture and are removed from the reaction mixture during or after completion of the polymerization. 9 claims

公开(公告)号：ID27651A

公开(公告)日：2001-04-19

申请号：ID20001481

申请日：1999-02-02

Applicant: BASF AG

Inventor： MOHRSSCHLADT RALF ,  HILDELBRANDT VOLKER ,  FUCHS EBERHARD

IPC: C08G69/00 ,  C08G69/04 ,  C08G69/08 ,  C08G69/16 ,  C08G69/28 ,  C08K3/00 ,  C08K3/011

Abstract: A continuous process for preparing a polyamide by reacting at least one aminonitrile with water comprises:(1) reacting at least one aminonitrile with water at a temperature from 90 to 400° C. and a pressure from 0.1 to 35x106 Pa in a flow tube containing a Brönsted acid catalyst selected from a beta-zeolite catalyst, a sheet-silicate catalyst or a titanium dioxide catalyst comprising from 70 to 100% by weight of anatase and from 0 to 30% by weight of rutile and in which up to 40% by weight of the titanium dioxide may be replaced by tungsten oxide to obtain a reaction mixture,(2) further reacting the reaction mixture at a temperature from 150 to 400° C. and a pressure which is lower than the pressure in step 1, in the presence of a Brönsted acid catalyst as in (1), the temperature and pressure being selected so as to obtain a first gas phase and a first liquid or a first solid phase or a mixture of first solid and first liquid phase, and the first gas phase is separated from the first liquid or the first solid phase or from the mixture of first liquid and first solid phase, and(3) admixing the first liquid or the first solid phase or the mixture of first liquid and first solid phase with a gaseous or liquid phase comprising water at a temperature from 150 to 370° C. and a pressure from 0.1 to 30x106 Pa to obtain a product mixture.

公开(公告)号：BG104648A

公开(公告)日：2001-02-28

申请号：BG10464800

申请日：2000-07-31

Applicant: BASF AG

Inventor： MOHRSCHLADT RALF ,  HILDEBRANDT VOLKER ,  FUCHS EBERHARD

IPC: C08G69/00 ,  C08G69/04 ,  C08G69/08 ,  C08G69/16 ,  C08G69/28 ,  C08K3/00 ,  C08K3/011

Abstract: The invention relates to a continuous method for producing a polyamide, comprising the following steps: (1) reaction of at least one aminonitrile with water at a temperature of between 90 and 400 degrees C and a pressure between 0.1 and 35 n 106 Pa in a tubular flow reactor containing a Bronsted acid catalyst selected from a beta zeolite sheet silicate or titanium dioxide catalyst; (2) further reaction of the reaction mixture at a temperature of between 150 and 400 degrees C and pressure which is lower than the pressure in step 1, where the temperature and pressure are selected such that a first gaseous phase and a first liquid or first solid phase or a mixture of a first solid and first liquid phase is obtained, and the first gaseous phase is separated; and (3) addition of the first liquid and/or first solid phase to a gaseous or liquid phase containing water, at a temperature between 150 and 370 degrees C and a pressure of between 0.1 and 30 x 106 Pa, resulting in a product mixture. 9 claims