公开(公告)号：DE4407325B4

公开(公告)日：2006-06-29

申请号：DE4407325

申请日：1994-03-04

Applicant: BASF AG

Inventor： WITZEL TOM ,  VOIT GUIDO

IPC: C07C211/36 ,  C07B43/04 ,  C07B61/00 ,  C07C209/22 ,  C07C209/26 ,  C07C209/48 ,  C07C209/52 ,  C07C253/30

公开(公告)号：MY121277A

公开(公告)日：2006-01-28

申请号：MYPI9702410

申请日：1997-05-31

Applicant: BASF AG

Inventor： KRAUSE ALFRED ,  RUST HARALD ,  SIEGEL HARDO ,  JULIUS MANFRED ,  WITZEL TOM ,  SIEGEL WOLFGANG

IPC: C07D211/58 ,  C07D211/56 ,  C07D221/20

Abstract: A PROCESS FOR PURIFYING CRUDE PIPERIDINES OF THE FORMULA I WHERE RL TO R4 ARE CI-C6-ALKYL, OR RL AND R2 AND/OR R3 AND R4 TOGETHER ARE A CH2-CHAIN OF 2 TO 5 CARBONS, WHICH COMPRISES, IN A FIRST STEP, REMOVING HIGH-BOILING SUBSTANCES AND, IF PRESENT, WATER FROM THE CRUDE PIPERIDINES BY DISTILLATION; IN A SECOND STEP, ADDING FROM 0.01 TO 5 % BY WEIGHT, BASED ON THE PRODUCT OF THE FIRST STEP, AS A REDUCING AGENT; AND, IN A THIRD STEP, ISOLATING THE PIPERIDINES BY DISTILLATION.

公开(公告)号：CA2194189C

公开(公告)日：2005-11-29

申请号：CA2194189

申请日：1995-06-16

Applicant: BASF AG

Inventor： FUCHS EBERHARD ,  WITZEL TOM

IPC: C07D201/08 ,  C07D207/267 ,  C07D223/10

Abstract: Production of cyclic lactames by reaction with water of aminocarboxylic acid compounds of general formula (I) in which R1 is -OH, -O-C1-C2-alkyl or -NR2-R3, R2 and R3 are mutually independently hydrogen, C1-C12 alkyl and C5-C8 cycloalkyl and m is a whole number from 3 to 12. The reaction is conducted in the liquid phase using heterogeneous catalysts.

公开(公告)号：CA2257094C

公开(公告)日：2005-11-22

申请号：CA2257094

申请日：1997-05-28

Applicant: BASF AG

Inventor： SIEGEL WOLFGANG ,  WITZEL TOM ,  JULIUS MANFRED ,  SIEGEL HARDO ,  RUST HARALD ,  KRAUSE ALFRED

IPC: C07B63/04 ,  C07D211/58 ,  C07D211/72 ,  C07D221/20 ,  C08K5/3435

Abstract: A process for reducing the dimerisation of piperidine of formula (I) in which R1 to R4 are C1 to C6 alkyl, R1 and R2 and/or R3 and R4 together are a CH2 chain with 2 to 5 C atoms. Said process is characterised in that to the piperidine is added 0.001 to 0.2 wt% of a reducing agent of the formula MXH4-m Y m, in which M is an alkaline metal, NR4, where R are the same or different C1-C4 alkyl groups, or an equivalent of an alkaline earth metal or an equivalent zinc, X is boron or aluminium, Y is H or CN and m is 0 or 1. Also described is a mixture of piperidine (I), 0.001 to 0.2 wt% of a reducing agent and 1 to 1000 ppm of the dimer of the piperidine (I), and the production of HALS stabilisers therefrom.

公开(公告)号：HU223965B1

公开(公告)日：2005-03-29

申请号：HU9702137

申请日：1995-12-16

Applicant: BASF AG

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

IPC: B01J23/76 ,  B01J23/89 ,  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：DE59611112D1

公开(公告)日：2004-11-11

申请号：DE59611112

申请日：1996-07-09

Applicant: BASF AG

Inventor： FRANK JUERGEN ,  MELDER JOHANN-PETER ,  MERGER FRANZ ,  WITZEL TOM

IPC: B01J31/02 ,  C07B61/00 ,  C07D319/06 ,  C07D319/08

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：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：CZ290805B6

公开(公告)日：2002-10-16

申请号：CZ391798

申请日：1997-05-30

Applicant: BASF AG

Inventor： JULIUS MANFRED ,  RUST HARALD ,  KRAUSE ALFRED ,  SIEGEL HARDO ,  SIEGEL WOLFGANG ,  WITZEL TOM

IPC: C07D211/58 ,  C07D211/56 ,  C07D221/20

Abstract: The present invention relates to purification of raw piperidines of the general formula I, in which Re1 through Re4 represent alkyl containing 1 to 6 carbon atoms, or Re1 and Re2 and/or Re3 and Re4 form together the CHi2-chain containing 2 to 5 carbon atoms, wherein the purification process comprises a first step consisting in removal of compounds with high boiling point and water, if present, from raw piperidines by employing distillation; a second step consisting in addition of 0.01 to 5 percent by weight, based on the weight of the first step product, of a reducing agent; and a third step, in which piperidines are isolated by distillation.

公开(公告)号：DE59410076D1

公开(公告)日：2002-04-11

申请号：DE59410076

申请日：1994-11-15

Applicant: BASF AG

Inventor： FUCHS EBERHARD ,  WITZEL TOM

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.