Process for the extractive production of valuable natural waxes
AssigneeSKW Trostberg Aktiengesellschaft
InventorsEgon Stahl, Karl-Werner Quirin
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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.
Claims16
Process for extractive production of natural wax from starting materials obtained from fossil, vegetable or animal sources, comprising
- extracting the starting materials with a physiologically unobjectional gas at supercritical pressure and temperature conditions;
- and, thereafter,
- separating the extract from the gas by changing the pressure and/or temperature conditions.
Dependencies are inferred from the claim text.