公开(公告)号：JPH10298129A

公开(公告)日：1998-11-10

申请号：JP3597798

申请日：1998-02-18

Applicant: BASF AG

Inventor： FISCHER ROLF DR ,  SCHNURR WERNER DR ,  WULFF-DOERING JOACHIM DR ,  MERGER MARTIN DR

IPC: C07D307/12 ,  B01J23/10 ,  C07B41/06 ,  C07B61/00 ,  C07C45/41 ,  C07C47/02 ,  C07D309/06 ,  C07D309/08

Abstract: PROBLEM TO BE SOLVED: To provide a method for industrially efficiently and continuously producing an aldehyde by hydrogenating an ester, while recycling the unused hydrogen and the unreacted ester, wherein the selectivity of the aldehyde is maintained at a satisfactory level. SOLUTION: This method for producing an aldehyde of the formula: R-CHO comprises hydrogenating an ester of the formula: R-COOR' (R is a non- substituted or substituted aliphatic group, alicyclic group, aromatic group or aralkyl group; R' is a group derived from a 1-10C alcohol] with excessive hydrogen in an amount of 2-200 moles per mole of the ester in the presence of a heterogeneous hydrogenation catalyst at 200-450 deg.C in a gas phase, while recycling the unreacted hydrogen and the unreacted ester. Therein, the alcohol is removed from the recycling flow in such an extent as the initial concentration of the produced alcohol: R'-OH in the reaction mixture is maximally 1 mole per mole of the carboxylic acid ester II.

公开(公告)号：CZ289886B6

公开(公告)日：2002-04-17

申请号：CZ202797

申请日：1995-12-22

Applicant: BASF AG

Inventor： ACHHAMMER GUNTHER DR ,  BASSLER PETER DR ,  FISCHER ROLF DR ,  FUCHS EBERHARD DR ,  LUYKEN HERMANN ,  SCHNURR WERNER DR ,  WITZEL TOM DR

IPC: C07D201/02 ,  C07C209/48 ,  C07C211/12 ,  C07D201/08 ,  C07D223/10

Abstract: Disclosed is a process for simultaneously preparing caprolactam and hexamethylenediamine from adiponitrile. The invented preparation process is characterized by (a) partial hydrogenation of adiponitrile, (b) subjecting the obtained mixture to distillation to obtain a portion of ammonia as a top product and a heavy fraction I, whereby distillation is carried out in the presence of an inert compound A, (c) subjecting the heavy fraction I to a second distillation to obtain a mixture of the inert compound A and ammonia as a top product and a heavy fraction II, (d) subjecting the heavy fraction II to another distillation to obtain the inert compound A as a top product and a heavy fraction III, whereby the distillation is optionally carried out in the presence of a compound B, (e) subjecting the heavy fraction to distillation to obtain a top product KP1 and a heavy fraction IV, (f) subjecting the KP1 top to distillation to obtain a top product KP2 and a heavy fraction V, whereby the se KP2 top product is supplied at least partially to a third column and the residue is discharged, and (g) subjecting the heavy fraction IV to distillation in order to obtain 6-aminocapronitrile as a top product with adiponitrile at the column bottom, and so obtained 6-aminocapronitrile is then recycled to caprolactam.

公开(公告)号：CZ288217B6

公开(公告)日：2001-05-16

申请号：CZ197297

申请日：1995-12-22

Applicant: BASF AG

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

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

Abstract: The invented continuous purification process of raw caprolactam by hydrogenation followed by subsequent treatment in acid environment and then by distillation in alkaline medium is characterized by (a) converting 6-aminocapronitrile by reaction thereof with water to raw caprolactam, (b) separating high- and low-boiling components from the raw caprolactam of the stage (a), (c) treating the raw caprolactam obtained in the stage (b) with hydrogen at a temperature ranging from 50 to 150 degC and pressure in the range of 0.15 to 2.5 MPa in the presence of a hydrogenation catalyst and a required solvent and so obtaining a mixture A, (d1) conducting the mixture A in the solvent and at a temperature ranging from 30 to 80 degC and pressure in the range of 0.1 to 0.5 MPa through an ion exchanger containing acid terminal groups and to thereby obtaining a mixture B1 or (d2) distilling the mixture A in the presence of sulfuric acid, whereby prior addition of sulfuric acid the solvent being present can be removed and to thereby obtaining a mixture B2 and (e) distilling the mixture B1 or the mixture B2 in the presence of a base to thereby obtaining raw caprolactam.

公开(公告)号：DE19714017A1

公开(公告)日：1998-10-08

申请号：DE19714017

申请日：1997-04-04

Applicant: BASF AG

Inventor： WEISS WOLFRAM DR ,  NIESSNER MANFRED DR ,  SCHNURR WERNER DR ,  STANGE RALPH

IPC: C08J3/03 ,  C08L61/28 ,  C08K5/17 ,  C09D161/26

Abstract: The invention concerns a process for preparing aqueous emulsions of aminotriazine resins which is characterized in that the aminotriazine resins are dispersed in water using an emulsifier in the presence of a base with a pKB value of between 2 and 9.

公开(公告)号：CZ197697A3

公开(公告)日：1998-03-18

申请号：CZ197697

申请日：1995-12-16

Applicant: BASF AG

Inventor： MELDER JOHANN PETER DR ,  SCHNURR WERNER DR ,  FLICK KLEMENS DR ,  EBEL KLAUS DR ,  WITZEL TOM DR ,  FISCHER ROLF DR ,  HARDER WOLFGANG DR ,  REHFINGER ALWIN DR

IPC: B01J23/89 ,  B01J23/76 ,  B01J23/889 ,  B01J27/18 ,  B01J37/02 ,  C07B61/00 ,  C07C253/30 ,  C07C255/24

Abstract: Aliphatic alpha,omega-aminonitriles are prepared by partial hydrogenation of aliphatic alpha,omega-dinitriles at elevated temperatures and superatmospheric pressure in the presence of a solvent and of a catalyst by a process which comprises using a catalyst which (a) contains a compound based on a metal selected from the group consisting of nickel, cobalt, iron, ruthenium and rhodium and (b) contains from 0.01 to 25% by weight, based on (a), of a promoter based on a metal selected from the group consisting of palladium, platinum, iridium, osmium, copper, silver, gold, chromium, molybdenum, tungsten, manganese, rhenium, zinc, cadmium, lead, aluminum, tin, phosphorus, arsenic, antimony, bismuth and rare earth metals and (c) from 0 to 5% by weight, based on (a), of a compound based on an alkali metal or on an alkaline earth metal. with the proviso that the component (a) is not based on iron or iron and one of the metals selected from the group consisting of cobalt, ruthenium and rhodium when (b) is a promoter based on a metal selected from the group consisting of titanium, manganese, chromium and molybdenum, and with the further proviso that, when a compound based on only ruthenium or rhodium or ruthenium and rhodium or nickel and rhodium is selected as component (a), the promoter (b) may be dispensed with.

公开(公告)号：DE19631521A1

公开(公告)日：1998-02-05

申请号：DE19631521

申请日：1996-08-03

Applicant: BASF AG

Inventor： FISCHER ROLF DR ,  PACIELLO ROCCO DR ,  ROEPER MICHAEL PROF DR ,  SCHNURR WERNER DR

IPC: B01J31/18 ,  B01J31/24 ,  C07C209/26 ,  C07C253/30 ,  C07C255/24 ,  C07F9/6574 ,  C07C211/12 ,  C07C255/17

Abstract: Manufacture of 6-aminocapronitrile or 6-aminocapronitrile/hexamethylene diamine mixtures, involving a) the reaction of at least one pentennitrile, selected from the group consisting of 2,3 and 4-pentennitrile with carbon monoxide and hydrogen in the presence of catalysts, which contain at least one element of the eighth subgroup as active components, obtaining a hydrogenation formylating discharge (I), b) the optional separation of carbon monoxide, hydrogen and the catalyst from the hydrogenation formylating discharge (I), obtaining a hydrogenation formylating discharge (II), c) the separation of 5-formyl valeronitrile from the hydrogenation formylating discharge (I) or (II), d) the reaction of separated 5-formyl valeronitrile with ammonia and hydrogen in the presence of hydrogenating catalysts, selected from the group consisting of rhenium, copper and its compounds as well as metals and metallic compounds of the eighth group, obtaining a hydrogenation discharge, and e) obtaining 6-aminocapronitrile and if necessary hexamethylene diamine.

公开(公告)号：DE19548289A1

公开(公告)日：1997-06-26

申请号：DE19548289

申请日：1995-12-22

Applicant: BASF AG

Inventor： ACHHAMMER GUENTHER DR ,  BASLER PETER DR ,  FISCHER ROLF DR ,  FUCHS EBERHARD DR ,  LUYKEN HERMANN ,  SCHNURR WERNER DR ,  VOIT GUIDO DR ,  HILPRECHT LUTZ DR

IPC: C07C209/48 ,  C07C209/86 ,  C07C211/12 ,  C07D201/08 ,  C07D223/10

Abstract: A process is disclosed for simultaneously preparing caprolactam and hexamethylene diamine starting from adipodinitrile.

公开(公告)号：DE19517823A1

公开(公告)日：1996-11-21

申请号：DE19517823

申请日：1995-05-18

Applicant: BASF AG

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

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

Abstract: The production of caprolactam by reacting 6-amino capronitrile with water in the presence of catalysts, using an initial mixture of 6-amino capronitrile and the tetrahydroazepine derivative of formula (I), and reaction in the liquid phase in the presence of heterogeneous catalysts, and a process for producing tetrahydroazepine derivative (I) and its use for making caprolactam and polycaprolactam.

公开(公告)号：DE4446894A1

公开(公告)日：1996-07-04

申请号：DE4446894

申请日：1994-12-27

Applicant: BASF AG

Inventor： SCHNURR WERNER DR ,  FISCHER ROLF DR ,  BASLER PETER DR ,  HARDER WOLFGANG DR

IPC: C07B61/00 ,  C07C253/30 ,  C07C255/24

Abstract: Aliphatic alpha,omega-aminonitriles are prepared by partial hydrogenation of aliphatic alpha,omega-dinitriles at elevated temperatures and superatmospheric pressure in the presence of a base and of a hydrogenation catalyst, by carrying out the hydrogenation in the presence of ammonia and lithium hydroxide or of a compound which gives lithium hydroxide during the hydrogenation.

公开(公告)号：DE4446893A1

公开(公告)日：1996-07-04

申请号：DE4446893

申请日：1994-12-27

Applicant: BASF AG

Inventor： MELDER JOHANN-PETER DR ,  SCHNURR WERNER DR ,  FLICK KLEMENS DR ,  EBEL KLAUS DR ,  WITZEL TOM DR ,  FISCHER ROLF DR ,  HARDER WOLFGANG DR ,  REHFINGER ALWIN DR

IPC: B01J23/76 ,  B01J23/889 ,  B01J27/18 ,  B01J37/02 ,  C07B61/00 ,  C07C253/30 ,  C07C255/24 ,  B01J23/89 ,  C07B43/04

Abstract: Aliphatic alpha,omega-aminonitriles are prepared by partial hydrogenation of aliphatic alpha,omega-dinitriles at elevated temperatures and superatmospheric pressure in the presence of a solvent and of a catalyst by a process which comprises using a catalyst which (a) contains a compound based on a metal selected from the group consisting of nickel, cobalt, iron, ruthenium and rhodium and (b) contains from 0.01 to 25% by weight, based on (a), of a promoter based on a metal selected from the group consisting of palladium, platinum, iridium, osmium, copper, silver, gold, chromium, molybdenum, tungsten, manganese, rhenium, zinc, cadmium, lead, aluminum, tin, phosphorus, arsenic, antimony, bismuth and rare earth metals and (c) from 0 to 5% by weight, based on (a), of a compound based on an alkali metal or on an alkaline earth metal. with the proviso that the component (a) is not based on iron or iron and one of the metals selected from the group consisting of cobalt, ruthenium and rhodium when (b) is a promoter based on a metal selected from the group consisting of titanium, manganese, chromium and molybdenum, and with the further proviso that, when a compound based on only ruthenium or rhodium or ruthenium and rhodium or nickel and rhodium is selected as component (a), the promoter (b) may be dispensed with.