Chemistry of carbon compounds – Miscellaneous organic carbon compounds – C-metal
Patent
1982-07-12
1984-01-10
Roberts, Elbert L.
Chemistry of carbon compounds
Miscellaneous organic carbon compounds
C-metal
C07J 900
Patent
active
044252757
ABSTRACT:
A process for separating 3-hydroxy steroids from sterol concentrate mixtures by combining a solution of the sterol-containing mixture in a cosolvent of a dialkyl ketone and a low molecular weight alcohol with a slurry or solution of calcium bromide. The complexed sterols are isolated by filtration and the sterols can be subsequently liberated from the complex by treatment with an aqueous/alcohol and isolated by filtration and drying. The complexed sterols are of large particle size which allows rapid filtration.
REFERENCES:
patent: 4057541 (1977-11-01), Weber et al.
patent: 4279828 (1981-07-01), Foster
Blum William P.
Crawford Richard R.
Naramore David C.
Eastman Kodak Company
Reece III Daniel B.
Roberts Elbert L.
Tootle Clyde L.
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