Process for the extractive production of valuable natural waxes

摘要

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.