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    PRODUCTION OF ALPHA-TOCOPHEROL OR ALPHA-TOCOPHERYL ACETATE
    1.
    发明专利
    PRODUCTION OF ALPHA-TOCOPHEROL OR ALPHA-TOCOPHERYL ACETATE 失效

    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.%.

    2.
    发明专利
    未知

    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.

    7.
    发明专利
    未知

    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.

    8.
    发明专利
    未知

    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.

    Preparation of alpha-tocopherol or alpha-tocopheryl acetate
    9.
    发明专利
    Preparation of alpha-tocopherol or alpha-tocopheryl acetate 未知

    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.

    PROCEDIMIENTO PARA LA ACILACION EN CINTINUO DE DERIVADOS DEL ESTER DE CROMANOL.
    10.
    发明专利
    PROCEDIMIENTO PARA LA ACILACION EN CINTINUO DE DERIVADOS DEL ESTER DE CROMANOL. 未知

    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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