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Lubricants or lubricant additives composed of ionic liquids containing ammonium cations

United States Patent

July 13, 2010
View the Complete Patent at the US Patent & Trademark Office
Oak Ridge National Laboratory - Visit the Partnerships Directorate Website
Ionic Liquids as Lubricants or Additives
A lubricant or lubricant additive is an ionic liquid alkylammonium salt. The alkylammonium salt has the structure R.sub.xNH.sub.(4-x).sup.+,[F.sub.3C(CF.sub.2).sub.yS(O).sub.2].sub.2N.sup- .- where x is 1 to 3, R is independently C.sub.1 to C.sub.12 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.
Qu; Jun (Knoxville, TN), Truhan, Jr.; John J. (Cookeville, TN), Dai; Sheng (Knoxville, TN), Luo; Huimin (Knoxville, TN), Blau; Peter J. (Knoxville, TN)
UT-Battelle, LLC (Oak Ridge, TN), University of Tennessee Research Foundation (Knoxville, TN)
11/ 533,098
September 19, 2006
STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT Invention developed under contract DE-AC05-00OR22725 with the U.S. Department of Energy. The government has certain rights in the invention.