Chemistry of carbon compounds – Miscellaneous organic carbon compounds – C-metal
Patent
1983-02-24
1985-10-22
Sneed, Helen M. S.
Chemistry of carbon compounds
Miscellaneous organic carbon compounds
C-metal
208 24, 208 28, 208 30, 208 33, 260412, 2604124, 2604126, 260428, 2604285, C11B 110
Patent
active
045487553
ABSTRACT:
Process for the extractive production of valuable, natural waxes from fossil and/or freshly grown vegetable and/or animal starting material by extraction of the starting material in an extraction stage with a physiologically unobjectionable gas at supercritical pressure and temperature conditions, separation of the extract-containing gas in a separator part by pressure reduction and/or temperature change, periodical or continuous withdrawal of the extract and return of the separated gas to the extraction stage.
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Recent Developments Separation Science, Nr. 3, Teil A, 1977, Seiten 171-193 C. A. Irani et al.: "Separations Using Supercritical Gases" *Seite 187; Seite 198, Spalte 2; Seite 189, Spalte 1*.
Quirin Karl-Werner
Stahl Egon
SKW Trostberg Aktiengesellschaft
Sneed Helen M. S.
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