The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 30, 2009
Filed:
Apr. 30, 2004
Peter Wasserscheid, Erlangen, DE;
Andreas Bösmann, Stegen, DE;
Andreas Jess, Bayreuth, DE;
Leonid Datsevich, Bayreuth, DE;
Christoph Schmitz, Jüchen, DE;
Andrea Wendt, Königstein-Taunus, DE;
Peter Wasserscheid, Erlangen, DE;
Andreas Bösmann, Stegen, DE;
Andreas Jess, Bayreuth, DE;
Leonid Datsevich, Bayreuth, DE;
Christoph Schmitz, Jüchen, DE;
Andrea Wendt, Königstein-Taunus, DE;
Merck Patent GmbH, Darmstadt, DE;
Abstract
This invention relates to a process for removing polarizable impurities from hydrocarbons and mixtures of hydrocarbons using ionic liquids as an extraction medium. By way of extraction, the degree of contamination of the hydrocarbon or mixture of hydrocarbons is reduced to a low or very low level. The specific ionic liquids are compounds of the Formula 1, which are organic salts that are liquid or can be melted to form a liquid and that can form at least a biphasic mixture with a hydrocarbon. The process is suitable for purifying a wide range of hydrocarbons under a wide range of process conditions.