公开(公告)号：AU2003270194A1

公开(公告)日：2004-04-08

申请号：AU2003270194

申请日：2003-09-15

Applicant: BASF AG

Inventor： BURST WOLFRAM ,  HARMS GUIDO ,  FREY GUNTHER ,  JANSEN HELMUT

IPC: B01D20060101 ,  B01D3/00 ,  B01D3/10 ,  B01J19/32

公开(公告)号：DE50000369D1

公开(公告)日：2002-09-19

申请号：DE50000369

申请日：2000-01-05

Applicant: BASF AG

Inventor： STREICHER DR ,  BURST WOLFRAM ,  DAEUWEL JUERGEN ,  KOPPENHOEFER JUERGEN

IPC: C07C29/80 ,  C07C31/22

Abstract: Production of highly pure phytantriol (I) comprises rectification of (I) in a fine vacuum in columns with ordered metal fabric packing and duct distributors with ≥ 500 dripping points/m at an angle of 90 degrees to the layer of fabric just below them. There are 2 or more, 20-100 mm high packing elements with layers of fabric at 90 degrees to one another. Strictly adiabatic rectification with absolute exclusion of air is used. Production of highly pure phytantriol (I) comprises rectification of (I) contaminated with lower and/or higher boiling by-products in a fine vacuum in columns containing metal fabric packing with ordered structure. The liquid is distributed with duct distributors with ≥ 500 dripping points/m . The ducts are at an angle of 90 degrees to the layer of fabric directly below them in the packing. There are 2 or more packing elements with a height of 20-100 mm and layers of fabric at 90 degrees to one another, below the distributor. The process is operated with absolute exclusion of air. Strictly adiabatic rectification is used.

公开(公告)号：DE10101942A1

公开(公告)日：2002-07-18

申请号：DE10101942

申请日：2001-01-17

Applicant: BASF AG

Inventor： BURST WOLFRAM ,  KAIBEL GERD ,  KUNTZE THOMAS ,  KOENIG JOSEF

IPC: B01D3/36 ,  C07C17/386 ,  C07C21/12 ,  C07C29/82 ,  C07C31/12 ,  B01D3/00 ,  C07B63/00 ,  C07C17/383 ,  C07C29/80 ,  C07C19/055

Abstract: Separating liquid azeotropic mixtures of at least two components (A) and (B) involves distillation in presence of an auxiliary substance (H) which forms lower-boiling binary azeotropes (AH) and (BH) with (A) and (B) respectively, to give a (B)-depleted fraction containing (A) plus (H), and an (A)-depleted fraction containing (B) plus (H).

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.

公开(公告)号：DE19524928A1

公开(公告)日：1997-01-09

申请号：DE19524928

申请日：1995-07-08

Applicant: BASF AG

Inventor： HARTMANN HORST ,  BURST WOLFRAM ,  KAISER WULF DR ,  LAAS HARALD DR ,  GRAFEN PAUL DR ,  BOCKSTIEGEL BERNHARD DR ,  BALDENIUS KAI-UWE DR

IPC: B01D3/00 ,  B01D3/10 ,  B01D3/14 ,  B01D3/16 ,  B01D3/26 ,  B01D3/32 ,  B01J19/32 ,  C07C17/38 ,  C07D311/72

Abstract: The invention concerns a process for extracting pure substances from mixtures of high-boiling air and/or temperature-sensitive substances which require a high separative power by rectification in a fine vacuum in columns containing metal cloth packing with an ordered structure and using channel liquid separators with 500 or more draining points/m . The draining points are arranged at an angle of 90 DEG to the cloth layers of the packing elements (7, 8) located immediately below the distributors. Two or a plurality of the packing elements (7, 8) below the liquid separator (6) have only a slight height which practically ensures the exclusion of air. These packing elements are shaped such that, during rectification, no heat can be exchanged through the column wall. The invention also concerns the packing columns used for this process and the use of this process and this column for the distillative fine-purification of vitamin E acetate.

公开(公告)号：DE3660911D1

公开(公告)日：1988-11-17

申请号：DE3660911

申请日：1986-07-11

Applicant: BASF AG

Inventor： MULLER JOSEF DR ,  WIERSDORFF WALTER-WIELANT DR ,  BURST WOLFRAM ,  DRALLE HEINZ DR ,  SCHAEFFNER ERNST DR ,  STEINKAMP ROLF DR

IPC: C07C255/53 ,  C07C121/75 ,  C07C120/04

Abstract: Veratryl cyanide is prepared by chloromethylating veratrol in solution in toluene and then reacting the resulting veratryl chloride with from 1 to 5 moles of an alkali metal cyanide, by a process in which the toluene from the chloromethylation is not removed for the reaction with cyanide, and from 3 to 25% by weight, based on veratryl chloride, of water, from 5 to 50% by weight, based on toluene, of a ketone of 3 to 6 carbon atoms and from 0.1 to 10% by weight, based on veratryl chloride, of a phase transfer catalyst are added before the reaction with cyanide.

公开(公告)号：ES2240322T3

公开(公告)日：2005-10-16

申请号：ES01130402

申请日：1996-06-29

Applicant: BASF AG

Inventor： HARTMANN HORST ,  BURST WOLFRAM ,  KAISER WULF DR ,  LAAS HARALD DR ,  GRAFEN PAUL DR ,  BOCKSTIEGEL BERNHARD DR

IPC: B01D3/00 ,  B01D3/10 ,  B01D3/14 ,  B01D3/16 ,  B01D3/26 ,  B01D3/32 ,  B01J19/32 ,  C07C17/38 ,  C07D311/72

Abstract: Procedimiento para la obtención de acetato de vitamina-E puro o de tocoferoles puros a partir de mezclas mediante rectificación en una columna con intercambio de materia, que contiene empaquetaduras de tela metálica con estructura ordenada, a una presión en la cabeza desde 0, 2 hasta 2 mbares, en el que a) se lleva a cabo la distribución del líquido con distribuidores en forma de canales con un número igual o mayor que 500 puntos de goteo por m2, b) disponiéndose los canales del distribuidor de líquidos girados con un ángulo de aproximadamente 90º alrededor del eje de la columna con respecto a las capas de tejido de los elementos de empaquetadura, que se encuentran directamente por debajo de estos distribuidores, c) encontrándose por debajo del distribuidor de los líquidos, 2 o varios elementos de empaquetadura con una altura de, tan solo, 20 hasta 100 mm, cuyas capas de tejido están giradas entre sí, respectivamente, 90º alrededor del eje de la columna, d) estando configurada la columna detal manera que, durante la rectificación no tenga lugar prácticamente un intercambio de calor a través de la pared de la columna, e) la columna está configurada de tal manera que pueda trabajarse prácticamente bajo exclusión del aire y f) la pérdida de presión por etapa de separación se reduce mediante un ajuste disminuido de la carga de líquido de tal manera, que las temperaturas, que se presentan en la cola se reduzcan por debajo del intervalo de descomposición del acetato de vitamina-E.

公开(公告)号：PT1280788E

公开(公告)日：2005-02-28

申请号：PT01931684

申请日：2001-05-03

Applicant: BASF AG

Inventor： BURST WOLFRAM ,  BOETTCHER ANDREAS

IPC: A61K31/375 ,  A61P3/02 ,  C07B61/00 ,  C07D307/62

Abstract: The invention relates to a process for the preparation of L-ascorbic acid, in which free 2-keto-L-gulonic acid or C3-C10-alkyl 2-keto-L-gulonate is lactonized under acidic conditions in the presence of a water-miscible solvent and where this solvent in situ forms a solvent in which the ascorbic acid formed is poorly soluble.

公开(公告)号：DE50103770D1

公开(公告)日：2004-10-28

申请号：DE50103770

申请日：2001-05-03

Applicant: BASF AG

Inventor： BOETTCHER ANDREAS ,  BURST WOLFRAM

IPC: A61K31/375 ,  A61P3/02 ,  C07B61/00 ,  C07D307/62

Abstract: The invention relates to a process for the preparation of L-ascorbic acid, in which free 2-keto-L-gulonic acid or C3-C10-alkyl 2-keto-L-gulonate is lactonized under acidic conditions in the presence of a water-miscible solvent and where this solvent in situ forms a solvent in which the ascorbic acid formed is poorly soluble.

公开(公告)号：DK1280788T3

公开(公告)日：2004-10-18

申请号：DK01931684

申请日：2001-05-03

Applicant: BASF AG

Inventor： BOETTCHER ANDREAS ,  BURST WOLFRAM

IPC: A61K31/375 ,  A61P3/02 ,  C07B61/00 ,  C07D307/62

Abstract: The invention relates to a process for the preparation of L-ascorbic acid, in which free 2-keto-L-gulonic acid or C3-C10-alkyl 2-keto-L-gulonate is lactonized under acidic conditions in the presence of a water-miscible solvent and where this solvent in situ forms a solvent in which the ascorbic acid formed is poorly soluble.