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公开(公告)号:JPH1033901A
公开(公告)日:1998-02-10
申请号:JP11255597
申请日:1997-04-30
Applicant: BASF AG
Inventor: KAIBEL GERD DR , STROEZEL MANFRED , RHEUDE UDO DR
Abstract: PROBLEM TO BE SOLVED: To simplify reattachment of an existing partition wall column and assembly of a new partition wall column by detachably fitting a partition wall to the inside of the partition wall column. SOLUTION: Partition walls 3 are detachably fitted to the inside of a partition wall column. In other words, the partition walls 3 are fitted on one side of the respective packed beds 4 as a sheet of 0.1-3mm desirably about 1-2mm thickness and formed into a structural member integrated with the packed beds 4. In this case, the integrated partition wall 3 is formed longer than the packed bed 4 combined therewith in the edges of the head and the bottom by about 1-10mm and has an additional sheet strips 5 in the edge of the bottom. The sheet strip 5 has about 10-20mm width and about 0.1-2mm thickness. In the case of combining an individual packed bed 4, a roof type overlapped part is formed and thereby liquid is inhibited from infiltrating. The overlapped part is sealed sufficiently and strongly for infiltration of vapor.
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公开(公告)号:JPH10130179A
公开(公告)日:1998-05-19
申请号:JP28952597
申请日:1997-10-22
Applicant: BASF AG
Inventor: STROEZEL MANFRED , RHEUDE UDO DR , RAHN RALF-THOMAS DR , KAIBEL GERD DR
IPC: C07B49/00 , C07C29/124 , C07C29/40 , C07C31/00 , C07C33/02
Abstract: PROBLEM TO BE SOLVED: To provide an improved method that enables to carry out, addition reaction between a Grignard compound and a carbonyl compound and the subsequent hydrolysis, without any trouble with respect to the plant-operation. SOLUTION: This method removes almost all the heat that is generated during exothermic reaction(s) of (a) an addition reaction between a halogenated organomagnesium compound shown by the formula RMgX (R is a 1-6C alkyl, 2-6C alkenyl, 2-6C alkynyl, or an aryl; X is Cl, Br, or I) and a carbonyl compound and/or (b) a hydrolysis of the resulting addition product, by carrying out at least one of these reactions in a solvent or a mixture of solvents and evaporating the solvent or the mixture of solvents.
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公开(公告)号:JPH10265419A
公开(公告)日:1998-10-06
申请号:JP4200698
申请日:1998-02-24
Applicant: BASF AG
Inventor: KIEFER MATTHIAS DR , SIEGEL WOLFGANG DR , THERRE JOERG DR , PAHL MELANIE , AQUILA WERNER DR , SCHAEFER-LUEDERSSEN ULRICH DR , RHEUDE UDO DR
Abstract: PROBLEM TO BE SOLVED: To provide a method for isomerizing ally alcohol in high yield and selectivity, and at a low cost. SOLUTION: In a method in which allyl alcohol of a starting material is isomerized to allyl alcohol of a product in an aqueous solution in the presence of a protonic acid, the pH value of the reaction mixture is adjusted in the range of 2-5 with a protonic acid at a concentration of
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公开(公告)号:ES2146929T3
公开(公告)日:2000-08-16
申请号:ES97100519
申请日:1997-01-15
Applicant: BASF AG
Inventor: KAIBEL GERD DR , RHEUDE UDO DR , STROEZEL MANFRED , GRAAUW JAN DE PROF DR , OLUJIC ZARKO DR , FREY GUNTHER
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公开(公告)号:DE59500893D1
公开(公告)日:1997-12-04
申请号:DE59500893
申请日:1995-06-30
Applicant: BASF AG
Inventor: DOBLER WALTER DR , KRAUSE WOLFGANG DR , PAUST JOACHIM DR , WOERZ OTTO DR , RHEUDE UDO DR , BURST WOLFRAM , DAEUWEL GUENTER , BERTRAM ARMIN , SCHULZ BERNHARD DR , WEGNER GUENTER DR , MUENSTER PETER DR , ERNST HANSGEORG DR , KOCHNER ARNO , ETZRODT HEINZ DR
IPC: C07C51/16 , C07C403/00 , C07C403/20
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公开(公告)号:DE19526473A1
公开(公告)日:1997-01-23
申请号:DE19526473
申请日:1995-07-20
Applicant: BASF AG
Inventor: BROECKER FRANZ JOSEF DR , STROEZEL MANFRED , RHEUDE UDO DR
IPC: B01J23/44 , B01J35/06 , B01J37/02 , C07B61/00 , C07C5/08 , C07C5/09 , C07C11/02 , C07C29/17 , C07C33/02 , C07C35/02
Abstract: Prepn. of alkenes by partial hydrogenation of alkynes in the liq. phase at 20-250 degrees C and 0.3-200 bar partial hydrogen pressure using a palladium catalyst-comprises:(a) the use of a solid bed carrier-supported catalyst obtd. by tempering the carrier material in air, cooling, coating with metallic palladium under vacuum, shaping and processing into monolithic catalyst element; and (b) the addn. of 10-18 ppm carbon monoxide to the hydrogen.
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公开(公告)号:DE4407464A1
公开(公告)日:1995-09-28
申请号:DE4407464
申请日:1994-03-07
Applicant: BASF AG
Inventor: JOHN MICHAEL DR , RHEUDE UDO DR , PAUST JOACHIM DR , MEYSER JOACHIM DR
IPC: C07C29/32 , C07C29/40 , C07C35/17 , C07C35/18 , C07C43/184 , C07C43/188 , C07C45/58 , C07C49/337 , C07C49/35 , C07C49/537 , C07C49/577 , C07C67/293 , C07C69/78 , C07C69/96 , C07D303/14 , C07D303/16 , C07D303/22 , C07D309/12 , C07D407/12 , C07F7/18 , C07C49/297 , C07C45/00 , C07D303/02
Abstract: Prodn. of 1,2,2-trimethyl- cyclopentylmethylketone derivs. of formula (I) comprises (A) (i) reacting a 2,2,6-tri- methyl-cyclohexane-1-one of formula (II) with a methylcarbanion of formula CH3 M (III) and converting the resulting 1,4-dihydroxy-1,2,2,6-tetramethylcyclohexane deriv. of formula (IV) into a mixt. of the corresp. cpds. (V) and (VI) by acid catalysed elimination of the tert. hydroxyl gp., or (A) (ii) the 2,2,6-trimethylcyclohexane-1-one cpd. (II) may be converted directly into the cpd. (VI) by a Wittig reaction with a triphenylmethylenephosphorane cpd. of formula (C6H5)3P=CH2 (VII); (B) converting the cpd. (VI) into the cpd. (V) by acid catalysed isomerisation of the double bond; (C) epoxidising the double bond in the cpd. (V) in the known way by reacting with peroxyacids, their salts or hydroperoxides to form the 7-oxa-bicycloÄ4.1.0Üheptane cpd. of formula (VIII) and (D) converting the cpd. (VIII) into the 1,2,2-tri- methyl-cyclopentylmethylketone cpd. (I) by reaction with Lewis acids and opt. splitting off the protective gp. from the O atom. R=H, alkyl, aryl, arylmethyl, trialkylsilyl, triarylsilyl, alkylarylsilyl, alkyloxyalkyl, tetrahydropyranyl, arylmethyloxycarbonyl, alkanoyl or benzoyl residue; M =Li, MgCl, MgBr or MgI.
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公开(公告)号:DE4141351A1
公开(公告)日:1993-06-17
申请号:DE4141351
申请日:1991-12-14
Applicant: BASF AG
Inventor: SCHNEIDER JOACHIM U DR , SCHUMACHER HORST DR , BEWERT WOLFGANG DR , GAUS GUENTER DR , RHEUDE UDO DR
Abstract: Process for the production of stable dry powders which are insoluble in hot water and which contain fat-soluble vitamins and/or carotenoids, which comprises the following process steps: a) preparation of an aqueous dispersion containing essentially these fat-soluble active substances, film-forming colloids and reducing sugars, b)conversion of this dispersion into dry powders of vitamin and/or carotenoid products and c) thermal hardening of the powder at temperatures of 60 to 180 DEG C, and which is characterised in that gelatin in combination with one or more organic amino compounds which are free or bound as salts and which contain a basic primary amino group and additionally either another amino group, a hydroxyl group, an alkoxy group or a carboxyl group, and/or in combination with sufficient basic alkali metal or alkaline earth metal compound for the dispersion to have a pH of 7.5 to 10, is used as film-forming colloid, and the dry powders obtainable by this process are described.
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公开(公告)号:ES2172726T3
公开(公告)日:2002-10-01
申请号:ES97118174
申请日:1997-10-20
Applicant: BASF AG
Inventor: STROEZEL MANFRED , RHEUDE UDO DR , RAHN RALF-THOMAS DR , KAIBEL GERD DR
IPC: C07B49/00 , C07C29/124 , C07C29/40 , C07C31/00 , C07C33/02
Abstract: A process for carrying out exothermic reactions comprises (a) addition reaction of an organomagnesium halide of formula RMgX with a carbonyl compound; and (b) hydrolysis of the addition product in a solvent or solvent mixture, in which much of the heat liberated in the reaction is removed by evaporation of the solvent. R = 1-6C alkyl, alkenyl or alkynyl, or aryl; X = Cl, Br or I.
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公开(公告)号:DE4435421A1
公开(公告)日:1996-04-11
申请号:DE4435421
申请日:1994-10-04
Applicant: BASF AG
Inventor: KRAUSE WOLFGANG DR , ERNST HANSGEORG DR , PAUST JOACHIM DR , RHEUDE UDO DR , DOBLER WALTER DR
IPC: C07C67/307 , C07C69/65 , C07F9/40
Abstract: Prodn. of trialkyl 4-phosphono-2-methyl-2-butenoate esters of formula (I) with a high E-isomer content comprises (a) reacting an alkyl 2-hydroxy-2-methyl-3-butenoate of formula (II) with PBr3 or PCl3 at 0-80 degrees C in the absence of pyridine to form a mixt. of an alkyl 4-halo-2- methyl-2-butenoate of formula (III) and an alkyl 2-halo-2-methyl-3-butenoate of formula (IV), and (b) reacting the mixt. with a trialkyl phosphite of formula (V) at 70-140 degrees C. R1, R2 = Me or Et; X = Cl or Br. Also claimed is the prodn. of (III) as in step (a) above at a temp. of 20-80 degrees C.
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