Ionic liquids

US7252791B2 · kind B2 · utility

Inventors

• Peter Wasserscheid · Cologne, DE
• Andreas Bösmann · Stegen, DE
• Roy Van Hal

Key dates

• Filing date: Mar 11, 2004
• Grant date: Aug 7, 2007
• Expiry date: Mar 11, 2024

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07D249/08
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

Low melting ionic compounds of the general formula (cation) (R′SO4) in which R′ is a branched or linear, saturated or unsaturated, aliphatic or alicyclic functionalized or non-functionalized hydrocarbon chain with 3-36 carbon atoms are provided. These compounds can serve as ionic liquids, e.g. as solvents or solvent additives in chemical reactions, as extraction agents or as heat carriers. The compounds comprise a cation and anionic sulfate ester.