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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.
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公开(公告)号：BR0307813A
公开(公告)日：2004-12-21
申请号：BR0307813
申请日：2003-02-28
Applicant: BASF AG
Inventor： PESCHEL WERNER , ADRIAN TILL , RUST HARALD , TTCHER ARND B , HILLMER THOMAS , LLER ULRICH M , PAPP RAINER
Abstract: A process for preparing cyclohexanol from benzene by: a) preparing cyclohexene by hydrogenating benzene in the presence of a catalyst, and b) preparing cyclohexanol by hydrating the cyclohexene in the presence of a catalyst, comprises: carrying out steps a) and b) in a reaction facility which has a bottom region at the lower end, a top region at the upper end, and a reaction zone between the top region and the bottom region which contains the catalyst according to steps a) and b), evaporating a portion of the benzene using the heat of reaction in the reaction zone, condensing it in the top region and returning it to the reaction zone, and withdrawing a reaction mixture containing cyclohexanol in the bottom region.
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公开(公告)号：AT261923T
公开(公告)日：2004-04-15
申请号：AT00949204
申请日：2000-06-21
Applicant: BASF AG
Inventor： STEIN FRANK , KRUG THOMAS , NOEBEL THOMAS , RUST HARALD
IPC: C07B61/00 , C07C29/149 , C07C31/20
Abstract: A process for preparing 1,6-hexanediol from a carboxylic acid mixture comprising adipic acid, 6-hydroxycaproic acid and small amounts of 1,4-cyclohexanediols which is obtained as by-product in the oxidation of cyclohexane to cyclohexanone/cyclohexanol after water extraction of the reaction mixture followed by extraction with aqueous sodium hydroxide solution, by esterification of the acids and hydrogenation comprisesa) liberating the carboxylic acids from the alkaline extract by addition of a mineral acid,b) fractionating the organic phase comprising carboxylic acids to give a distillate comprising the low molecular weight monocarboxylic acids and a residue comprising adipic acid and 6-hydroxycaproic acid,c) reacting the monocarboxylic an dicarboxylic acids present in the aqueous dicarboxylic acid mixture with a low molecular weight alcohol to give the corresponding carboxylic esters,d) freeing the esterification mixture obtained of excess alcohol and low boilers in a first distillation step,e) fractionating the bottom product in a second distillation step to give an ester fraction essentially free of 1,4-cyclohexanediols and a fraction comprising at least the major part of the 1,4-cyclohexanediols,f) catalytically hydrogenating the ester fraction which is essentially free of 1,4-cyclohexanediols andg) isolating 1,6-hexanediol from the hydrogenation product in a manner known per se in a final distillation step.
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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.
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公开(公告)号：DE10100552A1
公开(公告)日：2002-07-11
申请号：DE10100552
申请日：2001-01-09
Applicant: BASF AG
Inventor： GALL MARTIN , KAIBEL GERD , KRUG THOMAS , RUST HARALD , STEIN FRANK
IPC: C07D309/30 , B01D3/14 , C07C29/80 , C07C31/20 , C07D315/00 , C07D313/04 , C07B63/00 , B01D3/00
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.
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Patent Agency Ranking
公开(公告)号：ES2156363T3
公开(公告)日：2001-06-16
申请号：ES97905119
申请日：1997-02-28
Applicant: BASF AG
Inventor： BAUR KARL GERHARD , FISCHER ROLF , PINKOS ROLF , STEIN FRANK , RUST HARALD , BREITSCHEIDEL BORIS
IPC: B01J23/80 , B01J23/889 , C07B61/00 , C07C29/149 , C07C31/20
Abstract: PCT No. PCT/EP97/00980 Sec. 371 Date Aug. 28, 1998 Sec. 102(e) Date Aug. 28, 1998 PCT Filed Feb. 28, 1997 PCT Pub. No. WO97/31882 PCT Pub. Date Sep. 4, 19971,6-Hexanediol is 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 by water extraction of the reaction mixture, by esterification of the acids and hydrogenation wherein a) the monocarboxylic and dicarboxylic acids present in the aqueous dicarboxylic acid mixture are reacted with a low molecular weight alcohol to give the corresponding carboxylic esters, b) the resulting esterification mixture is freed of excess alcohol and low boilers in a first distillation stage, c) the bottoms are fractionated in a second distillation stage to give an ester fraction essentially free of 1,4-cyclohexanediols and a fraction comprising at least the major part of the 1,4-cyclohexanediols, d) the ester fraction essentially free of 1,4-cyclohexanediols is catalytically hydrogenated and e) in a pure distillation stage, 1,6-hexanediol is isolated from the hydrogenation product in a manner known per se.
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公开(公告)号：DE59703470D1
公开(公告)日：2001-06-07
申请号：DE59703470
申请日：1997-02-28
Applicant: BASF AG
Inventor： BAUR GERHARD , FISCHER ROLF , PINKOS ROLF , STEIN FRANK , RUST HARALD , BREITSCHEIDEL BORIS
IPC: B01J23/80 , B01J23/889 , C07B61/00 , C07C29/149 , C07C31/20
Abstract: PCT No. PCT/EP97/00980 Sec. 371 Date Aug. 28, 1998 Sec. 102(e) Date Aug. 28, 1998 PCT Filed Feb. 28, 1997 PCT Pub. No. WO97/31882 PCT Pub. Date Sep. 4, 19971,6-Hexanediol is 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 by water extraction of the reaction mixture, by esterification of the acids and hydrogenation wherein a) the monocarboxylic and dicarboxylic acids present in the aqueous dicarboxylic acid mixture are reacted with a low molecular weight alcohol to give the corresponding carboxylic esters, b) the resulting esterification mixture is freed of excess alcohol and low boilers in a first distillation stage, c) the bottoms are fractionated in a second distillation stage to give an ester fraction essentially free of 1,4-cyclohexanediols and a fraction comprising at least the major part of the 1,4-cyclohexanediols, d) the ester fraction essentially free of 1,4-cyclohexanediols is catalytically hydrogenated and e) in a pure distillation stage, 1,6-hexanediol is isolated from the hydrogenation product in a manner known per se.
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公开(公告)号：AU6264600A
公开(公告)日：2001-01-22
申请号：AU6264600
申请日：2000-06-21
Applicant: BASF AG
Inventor： STEIN FRANK , KRUG THOMAS , NOBEL THOMAS , RUST HARALD
IPC: C07B61/00 , C07C29/149 , C07C31/20
Abstract: A process for preparing 1,6-hexanediol from a carboxylic acid mixture comprising adipic acid, 6-hydroxycaproic acid and small amounts of 1,4-cyclohexanediols which is obtained as by-product in the oxidation of cyclohexane to cyclohexanone/cyclohexanol after water extraction of the reaction mixture followed by extraction with aqueous sodium hydroxide solution, by esterification of the acids and hydrogenation comprisesa) liberating the carboxylic acids from the alkaline extract by addition of a mineral acid,b) fractionating the organic phase comprising carboxylic acids to give a distillate comprising the low molecular weight monocarboxylic acids and a residue comprising adipic acid and 6-hydroxycaproic acid,c) reacting the monocarboxylic an dicarboxylic acids present in the aqueous dicarboxylic acid mixture with a low molecular weight alcohol to give the corresponding carboxylic esters,d) freeing the esterification mixture obtained of excess alcohol and low boilers in a first distillation step,e) fractionating the bottom product in a second distillation step to give an ester fraction essentially free of 1,4-cyclohexanediols and a fraction comprising at least the major part of the 1,4-cyclohexanediols,f) catalytically hydrogenating the ester fraction which is essentially free of 1,4-cyclohexanediols andg) isolating 1,6-hexanediol from the hydrogenation product in a manner known per se in a final distillation step.
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公开(公告)号：NO309262B1
公开(公告)日：2001-01-08
申请号：NO980869
申请日：1998-02-27
Applicant: BASF AG
Inventor： ARON MAIK , RUST HARALD
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.
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50.发明专利
公开(公告)号：EA001211B1
公开(公告)日：2000-12-25
申请号：EA199801029
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: Способингибированиядимеризациипиперидинас формулой Iвкоторомзаместителиот Rдо Rявляютсяалкильнымирадикаламис числоматомовуглеродаот 1 до 6, Rи Rи/или Rи RпопарносоставляютСН-цепочкис числоматомовуглеродаот 2 до 5, отличающийсятем, чток пиперидинудобавляетсяот 0,001 до 0,2 весовых % восстановителяс общейформулой MXHY, гдеМ -щелочнойметаллили NR, причемзаместители R могутбытькакодинаковыми, таки различнымиалкильнымирадикаламис числоматомовуглеродаот 1 до 4, илиодинэквивалентщелочноземельногометалла, илиодинэквивалентцинка, Хозначаетборилиалюминий, Y означаетН или CN, a m равно 0 или 1. Такжеописанасмесьпиперидина I, восстановителяв количествеот 0,001 до 0,2 весовых %, содержащаяот 1 до 1000 миллионныхдолейдимерапиперидина I иполучениесветостабилизаторовнаосновестерическизатрудненныхаминовизэтойсмеси.
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