公开(公告)号：DE10251311A1

公开(公告)日：2003-05-15

申请号：DE10251311

申请日：2002-11-04

Applicant: BASF AG

Inventor： KRATZ DETLEF ,  STAMMER ACHIM ,  RUST HARALD ,  SIEBENHAAR URSULA

IPC: C07C31/125 ,  C07C31/20

Abstract: The integrated production of 2-ethylhexanol (I), 2-ethylhexan-1,3-diol (II) and 2,4-diethyloctan-1,5-diol (III) comprises: (1) an aldol reaction of butyraldehyde; (2) catalytic hydrogenation; (3) separating most of (I); and (4) distilling the residue. The integrated production of 2-ethylhexanol (I), 2-ethylhexan-1,3-diol (II) and 2,4-diethyloctan-1,5-diol (III) comprises: (1) an aldol reaction of butyraldehyde; (2) catalytic hydrogenation; (3) separating most of (I); (4) distilling the residue, into: (a) (I)-(II)-(III)-enriched top fraction (T1) and depleted sump fraction (d1); or (b) (I) and (I)-depleted sump fraction (S2) ((d2)); and (5) separate recovery of: (a) (I), (II) and (III) from (T1) ((e1)); or (b) (II) and (III) from (S2) ((e2)). The sump temperature in (d1) and (e2) is 200 deg C maximum.

公开(公告)号：CZ291453B6

公开(公告)日：2003-03-12

申请号：CZ391698

申请日：1997-05-28

Applicant: BASF AG

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

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

Abstract: The present invention relates to a process for reducing the dimerization of piperidines of the general formula I wherein R1e through Re4 represent alkyl containing 1 to 6 carbon atoms, Re1 and Re2 and/or Re3 and Re4 together denote a CHi2 chain having 2 to 5 carbon atoms, wherein the process comprises adding to the piperidine from 0.001 to 0.2 percent by weight of a reducing agent of the general formula MXHi(4-m)Yim, wherein M is an alkali metal, NRi4, wherein R are identical or different alkyl groups containing 1 to 4 carbon atoms, or an equivalent of an alkaline earth metal or an equivalent of zinc, X represents boron or aluminum, Y denotes CN and m is 0 or 1, based on the amount of piperidine of the general formula I. The invention also relates to a mixture of piperidines of the general formula I, containing from 0.001 to 0.2 percent by weight of a reducing agent and from 1 to 1000 ppm of dimers of the piperidines of the general formula I, and to the hindered amine light stabilizers prepared therefrom.

公开(公告)号：DE10137480A1

公开(公告)日：2003-02-13

申请号：DE10137480

申请日：2001-08-03

Applicant: BASF AG

Inventor： RUST HARALD ,  BURKART KIRSTEN ,  FAUST TILLMANN ,  HENKELMANN JOCHEM ,  KINDLER ALOIS ,  KNOLL CHRISTIAN

IPC: C07D233/70 ,  C07D213/67 ,  C07D263/42 ,  C07D213/66

Abstract: Production of 5-alkoxy oxazoles (I) comprises heating an alkyl alpha -isocyanoalkanoate ester (II) at a temperature above 80 deg C in the presence of an auxiliary agent and simultaneously separating the product from the reaction mixture. Production of 5-alkoxy oxazoles of formula (I) comprises heating an alkyl alpha -isocyanoalkanoate ester of formula (II) at a temperature above 80 deg C in the presence of an auxiliary agent and simultaneously separating the product from the reaction mixture. R1 = optionally substituted 1-6C alkyl; R2 = H or optionally substituted 1-6C alkyl. An Independent claim is also included for a process for producing pyridoxine derivatives of formula (IX), comprising: (1) converting an amino acid of formula (III) to an ester of formula (IV); (2) converting (IV) to a formamido ester of formula (IV); (3) converting (IV) to (II), converting (II) to (I) as above; (4) reacting (I) with a protected diol of formula (VI) to form a Diels-Alder adduct of formula (VII); and (5) converting (VII) to (IX) by acid treatment and deprotection. R3, R4 = protecting groups or together form a protecting group.

公开(公告)号：DE59902540D1

公开(公告)日：2002-10-10

申请号：DE59902540

申请日：1999-11-30

Applicant: BASF AG

Inventor： RAHN DR ,  RUST HARALD ,  RUEHL DR ,  HENKELMANN DR ,  STUTZ DR

IPC: C07C29/16 ,  C07C29/80 ,  C07C29/82 ,  C07C33/025 ,  C07C33/042 ,  C07C33/048

Abstract: Distillative recovery of alpha -ethynyl-carbinols (I) from the liquid reaction mixture from the addition of acetylene to alpha , beta -unsaturated carbonyl compounds comprises continuous distillation, in which the feed is passed to the middle of the distillation column, most of the water is distilled off at the top as azeotrope with the solvent and (I) is recovered below the feed port.

公开(公告)号：CA2433073A1

公开(公告)日：2002-07-18

申请号：CA2433073

申请日：2002-01-08

Applicant: BASF AG

Inventor： GALL MARTIN ,  RUST HARALD ,  KRUG THOMAS ,  KAIBEL GERD ,  STEIN FRANK

IPC: C07D309/30 ,  B01D3/14 ,  C07C29/80 ,  C07C31/20 ,  C07D315/00

Abstract: The invention relates to a method for the distillative processing of the crude products 1,6-hexandiols (HDO), 1,5-pentandiol (PDO) or caprolactone (CLO) obtained according to the method of German patent application DE-A 196 07 954 in order to obtain the corresponding pure products. The distillative processing proceeds in a separation column (TK) in which a separating wall (T) is arranged in the column longitudinal direction forming an upper common column section (1), a lower common column section (6), a feed part (2, 4) with reinforcement part (2) and drive part (4), and a removal part (3, 5) with output part (3) and reinforcement part (5). The corresponding crude product HDO, PDO or CLO is fed in the center section of the feed part (2, 4), the high- boiling fraction (C) is removed from the column sump, the low-boiling fraction (A) is removed via the column head and the medium-boiling fraction (B) is removed from the center section of the removal part (3, 5). The inventive method can also be carried out in thermally coupled columns.

公开(公告)号：ES2169397T3

公开(公告)日：2002-07-01

申请号：ES97927086

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：GR3033454T3

公开(公告)日：2000-09-29

申请号：GR20000401142

申请日：2000-05-19

Applicant: BASF AG

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

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

Abstract: PCT No. PCT/EP97/02763 Sec. 371 Date Nov. 12, 1998 Sec. 102(e) Date Nov. 12, 1998 PCT Filed May 28, 1997 PCT Pub. No. WO97/46528 PCT Pub. Date Dec. 11, 1997The invention relates to a process for reducing the dimerization of piperidines of the formula I where R1 to R4 are C1- to C6-alkyl, R1 and R2 and/or R3 and R4 together are a CH2 chain having 2 to 5 carbon atoms, which comprises adding to the piperidine from 0.001 to 0.2% by weight of a reducing agent of the formula MXH4-mYm, where M is an alkali metal, NR4, where R are identical or different C1-C4-alkyl groups, or an equivalent of an alkaline earth metal or an equivalent of zinc, X is boron or aluminum, Y is H or CN and m is 0 or 1. The invention also relates to a mixture of piperidines of the formula I, from 0.001 to 0.2% by weight of a reducing agent and from 1 to 1000 ppm of dimers of the piperidines of the formula I, and to the preparation of hindered amine light stabilizers therefrom.

公开(公告)号：DE59701590D1

公开(公告)日：2000-06-08

申请号：DE59701590

申请日：1997-05-28

Applicant: BASF AG

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

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

Abstract: PCT No. PCT/EP97/02763 Sec. 371 Date Nov. 12, 1998 Sec. 102(e) Date Nov. 12, 1998 PCT Filed May 28, 1997 PCT Pub. No. WO97/46528 PCT Pub. Date Dec. 11, 1997The invention relates to a process for reducing the dimerization of piperidines of the formula I where R1 to R4 are C1- to C6-alkyl, R1 and R2 and/or R3 and R4 together are a CH2 chain having 2 to 5 carbon atoms, which comprises adding to the piperidine from 0.001 to 0.2% by weight of a reducing agent of the formula MXH4-mYm, where M is an alkali metal, NR4, where R are identical or different C1-C4-alkyl groups, or an equivalent of an alkaline earth metal or an equivalent of zinc, X is boron or aluminum, Y is H or CN and m is 0 or 1. The invention also relates to a mixture of piperidines of the formula I, from 0.001 to 0.2% by weight of a reducing agent and from 1 to 1000 ppm of dimers of the piperidines of the formula I, and to the preparation of hindered amine light stabilizers therefrom.

公开(公告)号：AT192730T

公开(公告)日：2000-05-15

申请号：AT97905123

申请日：1997-02-28

Applicant: BASF AG

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

IPC: C07D313/04 ,  C07C27/12 ,  C07C29/149 ,  C07C29/80 ,  C07C29/88 ,  C07C31/20 ,  C07C31/27 ,  C07C51/31 ,  C07D315/00

Abstract: PCT No. PCT/EP97/00990 Sec. 371 Date Aug. 28, 1998 Sec. 102(e) Date Aug. 28, 1998 PCT Filed Feb. 28, 1997 PCT Pub. No. WO97/31883 PCT Pub. Date Sep. 4, 19971,6-hexanediol and epsilon -caprolactone are prepared from a carboxylic acid mixture comprising adipic acid, 6-hydroxycaproic acid and small amounts of 1,4-cyclohexanediols which is obtained as a by-product in the oxidation of cyclohexane to cyclohexanone/cyclohexanol using oxygen or oxygen-containing gases by water extraction of the reaction mixture, by esterifying and hydrogenating a substream to give hexanediol and cyclizing 6-hydroxycaproic esters to give caprolactone.

公开(公告)号：AT192434T

公开(公告)日：2000-05-15

申请号：AT97927060

申请日：1997-05-28

Applicant: BASF AG

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

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

Abstract: PCT No. PCT/EP97/02763 Sec. 371 Date Nov. 12, 1998 Sec. 102(e) Date Nov. 12, 1998 PCT Filed May 28, 1997 PCT Pub. No. WO97/46528 PCT Pub. Date Dec. 11, 1997The invention relates to a process for reducing the dimerization of piperidines of the formula I where R1 to R4 are C1- to C6-alkyl, R1 and R2 and/or R3 and R4 together are a CH2 chain having 2 to 5 carbon atoms, which comprises adding to the piperidine from 0.001 to 0.2% by weight of a reducing agent of the formula MXH4-mYm, where M is an alkali metal, NR4, where R are identical or different C1-C4-alkyl groups, or an equivalent of an alkaline earth metal or an equivalent of zinc, X is boron or aluminum, Y is H or CN and m is 0 or 1. The invention also relates to a mixture of piperidines of the formula I, from 0.001 to 0.2% by weight of a reducing agent and from 1 to 1000 ppm of dimers of the piperidines of the formula I, and to the preparation of hindered amine light stabilizers therefrom.