Patent · US Expired

Process for removing polar impurities from hydrocarbons and mixtures of hydrocarbons

US7553406B2 · kind B2 · utility

34Cited by

6References

58Claims

0Family size

Assignee

Merck Patent GmbH · DE

Inventors

Peter Wasserscheid · Cologne, DE
Andreas Bösmann · Stegen, DE
Andreas Jess · Bayreuth, DE
Leonid Datsevich · Bayreuth, DE
Christoph Schmitz · Euskirchen, DE
Andrea Wendt · Idstein, DE

Key dates

Filing date	Apr 30, 2004
Grant date	Jun 30, 2009
Priority date	—
Expiry date	Oct 12, 2025

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC07C2527/126
WIPO fieldChemical engineering
WIPO sectorChemistry

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.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.