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：DE59104221D1

公开(公告)日：1995-02-23

申请号：DE59104221

申请日：1991-09-05

Applicant: BASF AG

Inventor： BOCKSTIEGEL BERNHARD DR ,  HOERCHER ULRICH DR ,  LAAS HARALD DR ,  JESSEL BARBARA DR ,  GRAFEN PAUL DR

IPC: C07C46/08 ,  C07C50/02

公开(公告)号：DE4120916A1

公开(公告)日：1993-01-07

申请号：DE4120916

申请日：1991-06-25

Applicant: BASF AG

Inventor： BOCKSTIEGEL BERNHARD DR ,  EMLING FRANZ DR ,  JESSEL BARBARA DR ,  LECHTKEN PETER DR ,  HOERCHER ULRICH DR

IPC: C07C219/08 ,  C07C233/38

Abstract: Described are compounds of the formula: R -X-Y-NR R , plus their salts with physiologically tolerable acids and their C1-2-trialkylammonium salts. These compounds are suitable for use in the treatment of illnesses.