公开(公告)号：DE59705561D1

公开(公告)日：2002-01-10

申请号：DE59705561

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：AT209632T

公开(公告)日：2001-12-15

申请号：AT97927086

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：DE10021624A1

公开(公告)日：2001-11-08

申请号：DE10021624

申请日：2000-05-04

Applicant: BASF AG

Inventor： RUST HARALD ,  KAIBEL GERD

IPC: B01D3/14 ,  B01D3/00 ,  B01J10/00

Abstract: Separating wall column comprises an upper column region (6), a feed part (7), a removal part (8) and a lower column region (9) as segments. The feed part and the removal part are separated from each other by a separating wall (10) fixed in the column. The separating wall is partially formed from an elastic material and has a low over-dimension with respect to its width. The wall is fixed in the column so that it exerts an elastic force on the inner casing of the column. Preferred Features: The separating wall is completely formed from an elastic material and is present as a one piece strip. The wall is made from PTFE or a corrosion resistant chromium-nickel high grade steel. The side edges of the wall have an angle of 20-60 degrees . The wall has a thickness of 0.05-1, preferably 0.1-0.3 mm.

公开(公告)号：PT847378E

公开(公告)日：2000-05-31

申请号：PT96930107

申请日：1996-08-26

Applicant: BASF AG

Inventor： ARON MAIK ,  RUST HARALD

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

Abstract: PCT No. PCT/EP96/03762 Sec. 371 Date Feb. 17, 1998 Sec. 102(e) Date Feb. 17, 1998 PCT Filed Aug. 26, 1995 PCT Pub. No. WO97/08120 PCT Pub. Date Mar. 6, 1997Butanol and dibutyl ether are separated from a mixture containing water, dibutyl ether and n-butanol, 2-butanol and/or isobutanol by a process in which a) the mixture is introduced into a first distillation column, essentially butanol is separated off at the bottom of this distillation column and the mixture taken off at the top of the distillation column b) is introduced into a second distillation column and essentially dibutyl ether is separated off at the bottom of this second distillation column and the mixture formed at the top of the second distillation column is removed, c) the second distillation column being operated at a higher pressure than the first distillation column and at least one of the two mixtures taken off via the top of the distillation columns being subjected to phase separation, only the organic phase separated off being fed to the second distillation column in the case of phase separation downstream of the first distillation column, and separation into an aqueous and an organic phase also being effected in the case of phase separation downstream of the second distillation column, a part stream being recycled from the top or rectification section of the second distillation column to the first distillation column.

公开(公告)号：TR199901895T2

公开(公告)日：2000-04-21

申请号：TR9901895

申请日：1998-01-17

Applicant: BASF AG

Inventor： BASSLER PETER ,  LUYKEN HERMANN ,  REHFINGER ALWIN ,  RUST HARALD

IPC: C07C253/34 ,  C07C255/24

Abstract: A process for distillative removal of 6-aminocapronitrile from mixtures (I) comprising 6-aminocapronitrile and an imine (II) comprises conducting the distillation in the presence of carbon dioxide.

公开(公告)号：DE59603317D1

公开(公告)日：1999-11-18

申请号：DE59603317

申请日：1996-03-08

Applicant: BASF AG

Inventor： SCHMIDT-RADDE MARTIN ,  HEIDER MARC ,  DAMS ALBRECHT ,  RUST HARALD

IPC: C07D207/26 ,  C07D207/267 ,  C07D211/76 ,  C07D223/10

Abstract: Prepn. of N-vinyl-lactams (I) of formula (A) (where R = CH=CH2; n=1-3) comprises reacting lactams (II) of formula (A) (where R = H; n = 1-3) with (a) 10-90 wt.% aq. alkali hydroxide soln. by distn. at 50-250 degrees C and 1-100 mbar with a residence time of 0.1-5 hrs. and then (b) C2H2 at 60-250 degrees C and 1-100 bar. Pref. reaction (a) is carried out in a column with at least 2 theoretical plates. (II) and aq. alkali hydroxide soln. are fed into the upper third of the column. A 30-60, esp. 45-55 wt.% soln., more esp. KOH soln., is used. Reaction is carried out at 70-180 degrees C and 1-30 mbar with a residence time of 0.5-2 hrs.

公开(公告)号：CZ9900796A3

公开(公告)日：1999-06-16

申请号：CZ79699

申请日：1997-08-28

Applicant: BASF AG

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

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

CPC classification number: C07C209/86 ,  C07C211/36 ,  C07C2601/08 ,  Y10S203/11 ,  C07C211/12

公开(公告)号：AU5864098A

公开(公告)日：1998-08-26

申请号：AU5864098

申请日：1998-01-17

Applicant: BASF AG

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

IPC: C07C209/84 ,  C07C211/12 ,  C07C211/36 ,  C07C209/48

公开(公告)号：DE19704617A1

公开(公告)日：1998-08-13

申请号：DE19704617

申请日：1997-02-07

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 ,  C07C211/12 ,  C07C211/36 ,  C07C209/84

Abstract: Separation of 2-aminomethylcyclopentyl amine (AMCPA) from a mixture also containing hexamethylene diamine (HMD) is carried out by distillation at 1-300 mbar.

公开(公告)号：DE19647349A1

公开(公告)日：1998-05-20

申请号：DE19647349

申请日：1996-11-15

Applicant: BASF AG

Inventor： BAUR KARL GERHARD DR ,  FISCHER ROLF DR ,  PINKOS ROLF DR ,  STEIN FRANK DR ,  RUST HARALD ,  BREITSCHEIDEL BODO DR

IPC: C07C29/149 ,  C07D315/00 ,  C07C31/20 ,  C07C29/136 ,  C07C29/74 ,  C07C29/80 ,  C07C29/88 ,  C07C69/48 ,  C07C69/675 ,  C07D313/04

Abstract: Preparation of 2,6-hexandiol and iota -caprolactone from a carboxylic acid mixture containing adipic acid, 6-hydroxycaproic acid and small amounts of 1,4-cyclohexandiols. The mixture is obtained as a by-product of the oxidation of cyclohexane into cyclohexanone and cyclohexanol with oxygen or oxygen-containing gases, water extraction, esterification and hydrogenation into hexandiol and cyclisation of 6-hydroxycaproic acid esters into caprolactone. Steps involved are: (a) esterification of the monocarboxylic and dicarboxylic acids in the aqueous reaction mixture with low molecular mass alcohols, (b) excess alcohol and low b.pt. substances are distilled off, (c) a second distillation step separates the mixture into an ester fraction substantially free of 1,4-cyclohexandiols and one containing at least the greater part of the 1,4-cyclohexandiols, (d) at least part of a substantially 6-hydroxycaproic acid ester stream is separated from the ester fraction in a third distillation stage, (e) the ester fraction from (d) from which the 6-hydroxycaproic acid ester was at least partially removed, is hydrogenated catalytically and 1,6-hexandiol is extracted by distillation and (f) the substantially 6-hydroxycaproic acid ester containing stream is heated above 200 deg C at reduced pressure so as to effect cyclisation. Pure iota -caprolactone is recovered by distillation. Preferably water is removed from the carboxylic acid mixture before esterification. Alcohol for esterification is either 1-3C (preferably MeOH) or 4-10C (preferably iso-BuOH or tert.-BuOH) and a variety of distillation, collection and separation arrangements are used depending on the relative b.pts. of the intermediate products involved. A Cu, Co and/or Re based catalyst is used for the hydrogenation step, or one of type CuaAlbZrcMndOx (a > 0, b > 0, c \- 0, d > 0, a > b/2, b > a/4, a > c, a > d and x = a number to balance the formula).