Liquid purification or separation – Processes – Liquid/liquid solvent or colloidal extraction or diffusing...
Patent
1991-04-01
1992-04-14
Therkorn, Ernest G.
Liquid purification or separation
Processes
Liquid/liquid solvent or colloidal extraction or diffusing...
210656, 540560, B01D 1508
Patent
active
051045435
ABSTRACT:
The invention relates to a method of separation by liquid chromatography for preparing enantiomerically pure hetrazines, using cellulose triacetate as a stationary phase and a polar solvent as a mobile phase.
REFERENCES:
patent: 4094984 (1978-06-01), Weber
patent: 4900729 (1990-02-01), Stransky
patent: 4910194 (1990-03-01), Moriwaki
patent: 4914096 (1990-04-01), Houlihan
patent: 4937240 (1990-06-01), Moriwaki
patent: 4968794 (1990-11-01), Weber
patent: 5028603 (1991-07-01), Tahara
Brandt Klaus
Nagel Jurgen
Boehringer Ingelheim GmbH
Frankhouser David
Reitenbach Daniel
Therkorn Ernest G.
Timbers Mary-Ellen
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