公开(公告)号：DE19704620A1

公开(公告)日：1998-08-13

申请号：DE19704620

申请日：1997-02-07

Applicant: BASF AG

Inventor： BASLER PETER DR ,  LUYKEN HERMANN ,  REHFINGER ALWIN DR ,  RUST HARALD

IPC: C07C255/24 ,  C07C253/34 ,  C07C211/12 ,  C07C251/08 ,  C07C209/84 ,  C07D295/02

Abstract: The invention relates to a method for separating 6-aminocapronitrile from mixtures (I) containing 6-aminocapronitrile and an imine (II) by distillation. Said method is characterized in that distillation occurs in the presence of carbon dioxide.

公开(公告)号：AU4456397A

公开(公告)日：1998-04-02

申请号：AU4456397

申请日：1997-08-28

Applicant: BASF AG

Inventor： LUYKEN HERMANN ,  REHFINGER ALWIN DR ,  BASSLER PETER ,  VOIT GUIDO ,  FISCHER ROLF ,  MERGER MARTIN ,  RUST HARALD

IPC: C07C209/86 ,  C07C211/12 ,  C07C211/36

Abstract: A process for separating 2-aminomethylcyclopentylamine from a mixture consisting of hexamethylenediamine and 2-aminomethylcyclopentylamine by distilling the mixture at a pressure from 1 to 300 mbar.

公开(公告)号：DE19636764A1

公开(公告)日：1998-03-12

申请号：DE19636764

申请日：1996-09-10

Applicant: BASF AG

Inventor： LUYKEN HERMANN ,  REHFINGER ALWIN DR ,  BASLER PETER DR ,  VOIT GUIDO DR ,  FISCHER ROLF DR ,  MERGER MARTIN DR ,  RUST HARALD

IPC: C07C209/86 ,  C07C211/36 ,  C07C211/12

Abstract: Separation of 2-aminomethylcyclopentylamine (I) from a mixture with hexamethylene diamine (II) is carried out by distillation at 1-200 mbar.

公开(公告)号：AU3170097A

公开(公告)日：1998-01-05

申请号：AU3170097

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: PCT No. PCT/EP97/02822 Sec. 371 Date Nov. 12, 1998 Sec. 102(e) Date Nov. 12, 1998 PCT Filed May 30, 1997 PCT Pub. No. WO97/46529 PCT Pub. Date Dec. 11, 1997A process for purifying crude piperidines of the formula I where R1 to R4 are C1-C6-alkyl, or R1 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：CA2257094A1

公开(公告)日：1997-12-11

申请号：CA2257094

申请日：1997-05-28

Applicant: BASF AG

Inventor： WITZEL TOM ,  SIEGEL HARDO ,  RUST HARALD ,  JULIUS MANFRED ,  SIEGEL WOLFGANG ,  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 MXH4mYm, 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：ID16996A

公开(公告)日：1997-11-27

申请号：ID971893

申请日：1997-06-03

Applicant: BASF AG

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

IPC: C07D211/58 ,  C07D211/56 ,  C07D221/20 ,  C07D211/06

Abstract: PCT No. PCT/EP97/02822 Sec. 371 Date Nov. 12, 1998 Sec. 102(e) Date Nov. 12, 1998 PCT Filed May 30, 1997 PCT Pub. No. WO97/46529 PCT Pub. Date Dec. 11, 1997A process for purifying crude piperidines of the formula I where R1 to R4 are C1-C6-alkyl, or R1 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：DE19531787A1

公开(公告)日：1997-03-06

申请号：DE19531787

申请日：1995-08-30

Applicant: BASF AG

Inventor： ARON MAIK ,  RUST HARALD

IPC: C07C27/28 ,  C07C29/80 ,  C07C31/12 ,  C07C41/42 ,  C07C43/04 ,  C07C41/58

Abstract: A process for separating butanol and dibutyl ether from a mixture containing water, dibutyl ether and n-butanol, 2-butanol and/or iso-butanol, in which: a) the mixture is introduced into a first distillation column, butanol is essentially separated in its sump and the mixture drawn from the top of the distillation column is b) introduced into a second distillation column and essentially dibutyl ether is separated off in its sump and the mixture form at its top is drawn off, whereby c) the second distillation column is operated at a higher pressure than the first and at least one of the two mixtures drawn off from the head of the distillation columns is taken to a phase separation, where in the case of phase separation behind the first distillation column, only the separated organic phase is taken to the second column and, in the case of phase separation behind the second column, the phases are separated into an aqueous and an organic phase and a partial flow from the head or concentration section of the second distillation column is fed back into the first column.

公开(公告)号：DE59302476D1

公开(公告)日：1996-06-13

申请号：DE59302476

申请日：1993-02-09

Applicant: BASF AG

Inventor： GOSCH HANS-JUERGEN DR ,  RUST HARALD ,  FISCHER ROLF DR ,  HECHLER CLAUS DR ,  PINKOS ROLF DR

IPC: C07C29/80 ,  C07C29/82 ,  C07C31/20

Abstract: A process for isolating 1,4-butanediol from mixtures obtained by catalytic hydrogenation of maleic acid esters, fumaric acid esters and/or succinic acid esters, which in addition to 1,4-butanediol contain tetrahydrofuran, water, C1-C4-alcohols, succinic acid diesters, hydroxybutyric acid esters, succinic acid alkyl hydroxyalkyl esters, gamma-butyrolactone and butyric acid esters.

公开(公告)号：DE3927916A1

公开(公告)日：1991-02-28

申请号：DE3927916

申请日：1989-08-24

Applicant: BASF AG

Inventor： STECK WERNER DR ,  RUST HARALD ,  LERMER HELMUT DR ,  NAEUMANN FRITZ DR

IPC: C07C253/34 ,  C07C255/50

Abstract: A process for the separation of ortho-, meta- and para-tolunitrile from ternary mixtures of isomers entails removing ortho-tolunitrile from these mixtures by distillation under pressures of from 102 and 105 Pa and with a reflux ratio of from 1:1 to 200:1, and distilling the remaining binary mixture of meta- and para-tolunitrile to concentrate to more than 75 mol-% para-tolunitrile, and freezing out the paratolunitrile at below 26 DEG C., and a process for the preparation of suitable ternary mixtures of isomers entails isomerization of pure ortho-, meta- or para-tolunitrile or mixtures thereof at from 380 DEG to 580 DEG C. on zeolite catalysts.