Lubricants or lubricant additives composed of ionic liquids containing ammonium cations

US7754664B2 · kind B2 · utility

Assignees

• UT-BATTELLE, LLC · US
• University of Tennessee Research Foundation · US

Inventors

• Jun Qu · Beijing, CN
• John Jay Truhan, Jr. · Peoria, US
• Sheng Dai · Knoxville, US
• Huimin Luo · Knoxville, US
• Peter J. Blau · Knoxville, US

Key dates

• Filing date: Sep 19, 2006
• Grant date: Jul 13, 2010
• Expiry date: May 13, 2029

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C10N2020/077
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

A lubricant or lubricant additive is an ionic liquid alkylammonium salt. The alkylammonium salt has the structure RxNH(4-x)+,[F3C(CF2)yS(O)2]2N− where x is 1 to 3, R is independently C1 to C12 straight chain alkyl, branched chain alkyl, cycloalkyl, alkyl substituted cycloalkyl, cycloalkyl substituted alkyl, or, optionally, when x is greater than 1, two R groups comprise a cyclic structure including the nitrogen atom and 4 to 12 carbon atoms, and y is independently 0 to 11. The lubricant is effective for the lubrication of many surfaces including aluminum and ceramics surfaces.