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公开(公告)号:JPH10195066A
公开(公告)日:1998-07-28
申请号:JP35346197
申请日:1997-12-22
Applicant: BASF AG
Inventor: BALDENIUS KAI-UWE , KAISER WULF , BOCKSTIEGEL BERNHARD , LAAS HARALD , SCHULZ BERNHARD , SCHMITT PETER , GLIETENBERG HELMUT
IPC: B01J27/138 , C07D311/72
Abstract: PROBLEM TO BE SOLVED: To obtain α-tocopherol (vitamin E) important as an antioxidant in the field of nutrition without causing grave waste-water problem from trimethylhydroquinone, etc., by recycling a zinc halide condensation catalyst. SOLUTION: The subject compound is produced by reacting 2,3,5- trimethylhydroquinone with phytol or isophytol in the presence of zinc chloride or zinc bromide and a proton donor such as a mineral acid or toluensulfonic acid. The reaction is carried out in a nonpolar solvent scarcely miscible with water and zinc chloride, etc., are introduced into the reaction system as a mixture of 1mol of the zinc chloride, etc., and 1-4mol of water, separated after the completion of reaction and recycled to the reaction system optionally after concentrating or replenishing to a concentration of about 60-90wt.%.
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公开(公告)号:ES2138358T3
公开(公告)日:2000-01-01
申请号:ES96924819
申请日:1996-06-29
Applicant: BASF AG
Inventor: BURST WOLFRAM , HARTMANN HORST , KAISER WULF , LAAS HARALD , GRAFEN PAUL , BOCKSTIEGEL BERNHARD
IPC: B01D3/00 , B01D3/10 , B01D3/14 , B01D3/16 , B01D3/26 , B01D3/32 , B01D53/86 , B01D53/94 , B01J19/32 , B01J23/63 , B01J23/656 , B01J23/89 , C07C17/38 , C07D311/72
Abstract: PCT No. PCT/EP96/02851 Sec. 371 Date Jan. 7, 1998 Sec. 102(e) Date Jan. 7, 1998 PCT Filed Jun. 29, 1996 PCT Pub. No. WO97/02890 PCT Pub. Date Jan. 30, 1997Packing elements with a low pressure drop for mass transfer column internals of the internal diameter of the column and of a height of from 40 to 300 mm made of dimensionally stable layers, which have an ordered structure and are in mutual contact, of cloth material or cloth-like material with a specific surface area of from 100 to 2000 m2/m3, wherein a) the shaped layers of cloth material or cloth-like material, preferably made of metal cloth, which are in mutual contact are arranged so that they form a multiplicity of narrow flow channels, preferably virtually triangular, virtually rectangular or else virtually equilateral hexagonal flow channels, in which the angle of inclination of the serration of the individual cloth layers of the packing to the column axis is only 0 to 25 DEG , preferably 3 to 14 DEG , and b) to ensure mechanical stability of the packing elements, if necessary wires or thin rods are fixed in suitable arrangement between the cloth layers, or else the cloth layers are firmly connected at some points of contact, and processes for obtaining pure substances from substance mixtures by rectification using the novel packing elements.
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公开(公告)号:CA2546480A1
公开(公告)日:2005-06-30
申请号:CA2546480
申请日:2004-12-14
Applicant: BASF AG
Inventor: SZARVAS LASZLO , GLAS DETLEV , EXNER KAI MICHAEL , LAAS HARALD , MASSONNE KLEMENS
IPC: C07F9/54
Abstract: The invention relates to a method for producing quaternary phosphonium salts by reacting a tertiary phospine with an optionally substituted, saturated or mono- or polyunsaturated electrophile comprising between 3 and 25 carbon atoms, in ternary solvent mixtures.
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公开(公告)号:DE10135716A1
公开(公告)日:2003-02-06
申请号:DE10135716
申请日:2001-07-21
Applicant: BASF AG
Inventor: RUMPF BERND , KINNER FRANK , LAAS HARALD , ERDEN JENS VON
Abstract: Falling film evaporator system for distillative mixture separation, comprises one or more heat exchangers are integrated directly into the vapor chamber (2) of the falling film evaporator (1). An Independent claim is also included for a method of separating a distillative mixture.
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公开(公告)号:IN186855B
公开(公告)日:2001-11-24
申请号:IN2956MA1997
申请日:1997-12-22
Applicant: BASF AG
Inventor: BALDENIUS KAI-UWE , KAISER WULF , BOCKSTIEGEL BERNHARD , LAAS HARALD , SCHULZ BERNHARD , SCHMITT PETER , GLIETENBERG HELMUT
IPC: B01J27/138 , C07D311/72
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公开(公告)号:CA2546307A1
公开(公告)日:2005-06-30
申请号:CA2546307
申请日:2004-12-14
Applicant: BASF AG
Inventor: LAAS HARALD , SZARVAS LASZLO , GLAS DETLEV , MASSONNE KLEMENS , EXNER KAI MICHAEL
IPC: C07C403/20 , C07B61/00 , C07C1/34 , C07C67/293 , C07C403/12
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公开(公告)号:DE59709492D1
公开(公告)日:2003-04-17
申请号:DE59709492
申请日:1997-12-17
Applicant: BASF AG
Inventor: BALDENIUS KAI-UWE , KAISER WULF , BOCKSTIEGEL BERNHARD , LAAS HARALD , SCHULZ BERNHARD , SCHMITT PETER , GLIETENBERG HELMUT
IPC: B01J27/138 , C07D311/72
Abstract: Preparation of alpha -tocopherol or alpha -tocopheryl acetate comprises reaction of 2,3,5-trimethylhydroquinone (TMH) with phytol or isophytol (IP) in the presence of a zinc halide condensation catalyst and a proton donor, optionally with a final esterification step using acetic anhydride. The reaction involves: (A) a water immiscible or poorly water-miscible non-polar solvent; and (B) 1-4 mole water per mole zinc halide.
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公开(公告)号:DE59603300D1
公开(公告)日:1999-11-11
申请号:DE59603300
申请日:1996-06-29
Applicant: BASF AG
Inventor: BURST WOLFRAM , HARTMANN HORST , KAISER WULF , LAAS HARALD , GRAFEN PAUL , BOCKSTIEGEL BERNHARD , BALDENIUS KAI-UWE
IPC: B01D3/00 , B01D3/10 , B01D3/14 , B01D3/16 , B01D3/26 , B01D3/32 , B01D53/86 , B01D53/94 , B01J19/32 , B01J23/63 , B01J23/656 , B01J23/89 , C07C17/38 , C07D311/72
Abstract: PCT No. PCT/EP96/02851 Sec. 371 Date Jan. 7, 1998 Sec. 102(e) Date Jan. 7, 1998 PCT Filed Jun. 29, 1996 PCT Pub. No. WO97/02890 PCT Pub. Date Jan. 30, 1997Packing elements with a low pressure drop for mass transfer column internals of the internal diameter of the column and of a height of from 40 to 300 mm made of dimensionally stable layers, which have an ordered structure and are in mutual contact, of cloth material or cloth-like material with a specific surface area of from 100 to 2000 m2/m3, wherein a) the shaped layers of cloth material or cloth-like material, preferably made of metal cloth, which are in mutual contact are arranged so that they form a multiplicity of narrow flow channels, preferably virtually triangular, virtually rectangular or else virtually equilateral hexagonal flow channels, in which the angle of inclination of the serration of the individual cloth layers of the packing to the column axis is only 0 to 25 DEG , preferably 3 to 14 DEG , and b) to ensure mechanical stability of the packing elements, if necessary wires or thin rods are fixed in suitable arrangement between the cloth layers, or else the cloth layers are firmly connected at some points of contact, and processes for obtaining pure substances from substance mixtures by rectification using the novel packing elements.
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公开(公告)号:DE19654038A1
公开(公告)日:1998-06-25
申请号:DE19654038
申请日:1996-12-23
Applicant: BASF AG
Inventor: BALDENIUS KAI-UWE , KAISER WULF , BOCKSTIEGEL BERNHARD , LAAS HARALD , SCHULZ BERNHARD , SCHMITT PETER , GLIETENBERG HELMUT
IPC: B01J27/138 , C07D311/72
Abstract: Preparation of alpha -tocopherol or alpha -tocopheryl acetate comprises reaction of 2,3,5-trimethylhydroquinone (TMH) with phytol or isophytol (IP) in the presence of zinc chloride and a proton donor in a water immiscible, or poorly water miscible, nonpolar solvent; and the product is optionally esterified with acetic anhydride. Either (1) the ZnCl2 is used in a mixture with 1-4 moles water per mole ZnCl2; or (2) at the end of reaction, the zinc chloride is separated, preferably by extraction with water or a water/low-boiling solvent mixture; and the zinc chloride solution (optionally concentrated to 60-90 wt.%), is partly or completely returned (optionally as a hot solution or pumpable mash) to the reaction mixture under conditions such that no more than 4 (preferably no more than 3) moles water per mole zinc chloride are available for subsequent reaction.
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公开(公告)号:ES2243585T3
公开(公告)日:2005-12-01
申请号:ES01989492
申请日:2001-11-21
Applicant: BASF AG
Inventor: OOST CARSTEN , KAIBEL GERD , LAAS HARALD , SCHMITT PETER , VON ERDEN JENS
IPC: B01D1/22 , B01D3/00 , B01D3/14 , B01D3/32 , C07D311/72
Abstract: Procedimiento para la obtención en continuo de derivados del éster de cromanol de la fórmula I en la que R1, R2, R3, R4, R5, R6, R7 y R8 significan, independientemente entre sí, hidrógeno o un resto alquilo con 1 a 10 átomos de carbono en caso dado substituido, ramificado o no ramificado y los enlaces en trazos discontinuos significan, en caso dado, un enlace adicional C-C, según el cual se hacen reaccionar, derivados del cromanol, alimentados de manera continua, de la fórmula II con agentes de acilación, alimentados de manera continua, elegidos entre el grupo de los ácidos carboxílicos de la fórmula IIIa R8-COOH IIIa y de los anhídridos de los ácidos carboxílicos de la fórmula IIIb donde R9 significa hidrógeno o un resto alquilo con 1 a 10 átomos de carbono en caso dado substituido, ramificado o no ramificado, en presencia de un catalizador, en una columna de reacción a modo de reactor, los productos de la reacción se descargan de manera continua del reactor y se separa de la mezcla de la reacción, al menos, un producto de la reacción durante la conversión.
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