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US 3,960,703 AGranted
Process for the purification of slack waxes
AssigneeDeutsche Texaco Aktiengesellschaft
InventorsMaximilian Dielacher, Uwe Hansen
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Abstract
Aromatic compounds can be separated from slack wax in a continuous cyclic process using a macroporous metal ion loaded cation exchange resin involving successive steps of adsorption, purge, desorption and purge.
Claims16
A process for the purification of slack wax containing aromatic compounds which comprises the following steps:
- a. contacting an aromatic-containing slack wax in the liquid phase with a macroporous, metal ion loaded, cationic exchange resin at a temperature above the melting point of the slack wax whereby aromatics are adsorbed by the resin,
- b. contacting the resin with a paraffinic hydrocarbon whereby residual quantities of the slack wax charge are displaced,
- c. contacting the resin with a polar organic solvent whereby the adsorbed aromatics are desorbed, and
- d. contacting the resin with a paraffinic hydrocarbon whereby residual quantities of the polar organic solvent are displaced.
1 more element
Dependencies are inferred from the claim text.