Synergistic mixtures of ionic liquids with other ionic liquids and/or with ashless thiophosphates for antiwear and/or friction reduction applications

US9725669B2 · kind B2 · utility

Assignee

• The Board of Regents of the University of Texas System · US

Inventors

• Pranesh Aswath · Grapevine, US
• Xin Chen · Crystal Lake, US
• Vibhu Sharma · Arlington, US
• Maria Amaya Igartua · Eibar, ES
• Francesco Pagano · Eibar, ES
• Wolfgang Binder · Almería, ES
• Parvin Zare · Bodenwerder, DE
• Nicole Doerr · Wiener Neustadt, AT

Key dates

• Filing date: May 7, 2013
• Grant date: Aug 8, 2017
• Expiry date: Sep 10, 2033

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C10N2030/08
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

Anti-wear and/or friction reducing formulations that include a mixture of at least one first ionic liquid and at least one ashless antiwear compound. The ashless antiwear compound can be a second ionic liquid or an ashless thiophosphate compound. The formulation desirably provides synergistic anti-wear and/or friction reducing properties. The first IL can be a monocationic ionic liquid or a dicationic ionic liquid. The second IL is a dicationic ionic liquid. The ashless thiophosphate is desirably a thiophosphate, such as a fluorothiophosphate (FTP), an alkylphosphorofluoridothiolate, or an alkylthioperoxydithiophosphate. Antiwear and/or friction reduction formulations comprising the above mixtures diluted up to 25% by weight in a base oil.