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:
Jan. 04, 2011
Filed:
Aug. 31, 2004
Applicants:
Peter Wasserscheid, Erlangen, DE;
Andreas Bösmann, Stegen, DE;
Roy Van Hal, Köln, DE;
Inventors:
Assignee:
Merck Patent GmbH, Darmstadt, DE;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
C07D 233/56 (2006.01); B01F 1/00 (2006.01); C23G 5/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
An ionic liquid according to the invention is substantially halogen-free, has a low viscosity and is stable to hydrolytic degradation under test conditions. The ionic liquid is a compound of the formula (cation) (R'—O—SO), (cation) (R′—SO), or a mixture of the two compounds. It can be used in processes for the chemical conversion and separation of materials by employing the ionic liquid as a solvent, solvent additive, extraction agent or phase-transfer catalyst. It can also be used in a heat exchange device wherein the ionic liquid serves as a heat carrier or heat carrier additive.