公开(公告)号：BG64093B1

公开(公告)日：2003-12-31

申请号：BG10203897

申请日：1997-11-12

Applicant: BASF AG

Inventor： FUCHS EBERHARD ,  MELDER JOHANN-PETER ,  SCHNURR WERNER ,  FISCHER ROLF

IPC: C07D201/08 ,  C07D223/12

Abstract: The method occurs by reaction between 6-aminocapronitrile and water in the presence of a catalyst, making use of an initial mixture of 6-aminocapronitrile and tetrahydroazepine derivative with the formula The reaction occurs in liquid phase in the presence of heterogeneous catalysts. The invention also relates to a method for the preparation of tetrahydroazepine derivative with the above-mentioned formula and to its use for the preparation of caprolactam and polycaprolactam. 6 claims

公开(公告)号：DE10220494A1

公开(公告)日：2003-11-20

申请号：DE10220494

申请日：2002-05-07

Applicant: BASF AG

Inventor： FUCHS EBERHARD ,  MARTAN HANS ,  MUELLER-ENGEL KLAUS JOACHIM

IPC: C07C51/41 ,  C07C51/44 ,  C07C57/04 ,  C08F20/06

Abstract: A process prepares an aqueous alkali metal acrylate solution by distillatively removing acrylic acid from a mixture as vapors and taking up the vapors immediately from the gas phase into an aqueous alkali solution.

公开(公告)号：PL185462B1

公开(公告)日：2003-05-30

申请号：PL31811395

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：DE59807971D1

公开(公告)日：2003-05-22

申请号：DE59807971

申请日：1998-04-30

Applicant: BASF AG

Inventor： FUCHS EBERHARD ,  FISCHER ROLF

IPC: C07D201/08

Abstract: The disclosure is a process for preparing cyclic lactams of the formula I:whereR1 is hydrogen, alkyl, cycloalkyl or aryl, andA is C3-C12-alkylene unsubstituted or substituted by 1, 2, 3, 4, 5 or 6 substituents selected independently of one another from the group consisting of alkyl, cycloalkyl and aryl,by conversion of an omega-aminocarbonitrile of the formula II:where R1 and A are each as defined above, in the presence of at least one catalyst, which comprises converting said nitrile II into an oligomer mixture, and treating with superheated steam.

公开(公告)号：DE59510633D1

公开(公告)日：2003-05-15

申请号：DE59510633

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：DE59610304D1

公开(公告)日：2003-05-08

申请号：DE59610304

申请日：1996-05-07

Applicant: BASF AG

Inventor： FUCHS EBERHARD ,  MELDER JOHANN-PETER ,  SCHNURR WERNER ,  FISCHER ROLF

IPC: C07D201/08 ,  C07D223/12

Abstract: A process for preparing caprolactam by reacting 6-aminocapronitrile with water in the presence of catalysts comprises using a starting mixture of 6-aminocapronitrile and the tetrahydroazepine derivative of the formulaand conducting the reaction in liquid phase in the presence of a heterogeneous catalyst. Also describes a process for preparing said tetrahydroazepine derivative I and its use for preparing caprolactam and polycaprolactam.

公开(公告)号：DK0815078T3

公开(公告)日：2003-04-22

申请号：DK96919688

申请日：1996-05-07

Applicant: BASF AG

Inventor： FISCHER ROLF ,  SCHNURR WERNER ,  FUCHS EBERHARD ,  MELDER JOHANN-PETER

IPC: C07D201/08 ,  C07D223/12

Abstract: A process for preparing caprolactam by reacting 6-aminocapronitrile with water in the presence of catalysts comprises using a starting mixture of 6-aminocapronitrile and the tetrahydroazepine derivative of the formulaand conducting the reaction in liquid phase in the presence of a heterogeneous catalyst. Also describes a process for preparing said tetrahydroazepine derivative I and its use for preparing caprolactam and polycaprolactam.

公开(公告)号：AT236121T

公开(公告)日：2003-04-15

申请号：AT96919688

申请日：1996-05-07

Applicant: BASF AG

Inventor： FUCHS EBERHARD ,  MELDER JOHANN-PETER ,  SCHNURR WERNER ,  FISCHER ROLF

IPC: C07D201/08 ,  C07D223/12

Abstract: A process for preparing caprolactam by reacting 6-aminocapronitrile with water in the presence of catalysts comprises using a starting mixture of 6-aminocapronitrile and the tetrahydroazepine derivative of the formulaand conducting the reaction in liquid phase in the presence of a heterogeneous catalyst. Also describes a process for preparing said tetrahydroazepine derivative I and its use for preparing caprolactam and polycaprolactam.

公开(公告)号：ES2181401T3

公开(公告)日：2003-02-16

申请号：ES99910175

申请日：1999-02-02

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: 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：ES2181271T3

公开(公告)日：2003-02-16

申请号：ES98946406

申请日：1998-08-21

Applicant: BASF AG

Inventor： FUCHS EBERHARD ,  FLICK KLEMENS

IPC: B01J21/06 ,  B01J37/06 ,  C07D201/08