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Title: Ionic liquids containing symmetric quaternary phosphonium cations and phosphorus-containing anions, and their use as lubricant additives

Abstract

An ionic liquid composition having the following generic structural formula: ##STR00001## wherein R 1, R 2, R 3, and R 4 are equivalent and selected from hydrocarbon groups containing at least three carbon atoms, and X - is a phosphorus-containing anion, particularly an organophosphate, organophosphonate, or organophosphinate anion, or a thio-substituted analog thereof containing hydrocarbon groups with at least three carbon atoms. Also described are lubricant compositions comprising the above ionic liquid and a base oil, wherein the ionic liquid is dissolved in the base oil. Further described are methods for applying the ionic liquid or lubricant composition onto a mechanical device for which lubrication is beneficial, with resulting improvement in friction reduction, wear rate, and/or corrosion inhibition.

Inventors:
;
Issue Date:
Research Org.:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1439419
Patent Number(s):
9,957,460
Application Number:
14/184,754
Assignee:
UT-BATTELLE, LLC (Oak Ridge, TN) ORNL
DOE Contract Number:  
AC05-00OR22725
Resource Type:
Patent
Resource Relation:
Patent File Date: 2014 Feb 20
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY

Citation Formats

Qu, Jun, and Luo, Huimin. Ionic liquids containing symmetric quaternary phosphonium cations and phosphorus-containing anions, and their use as lubricant additives. United States: N. p., 2018. Web.
Qu, Jun, & Luo, Huimin. Ionic liquids containing symmetric quaternary phosphonium cations and phosphorus-containing anions, and their use as lubricant additives. United States.
Qu, Jun, and Luo, Huimin. Tue . "Ionic liquids containing symmetric quaternary phosphonium cations and phosphorus-containing anions, and their use as lubricant additives". United States. https://www.osti.gov/servlets/purl/1439419.
@article{osti_1439419,
title = {Ionic liquids containing symmetric quaternary phosphonium cations and phosphorus-containing anions, and their use as lubricant additives},
author = {Qu, Jun and Luo, Huimin},
abstractNote = {An ionic liquid composition having the following generic structural formula: ##STR00001## wherein R1, R2, R3, and R4 are equivalent and selected from hydrocarbon groups containing at least three carbon atoms, and X- is a phosphorus-containing anion, particularly an organophosphate, organophosphonate, or organophosphinate anion, or a thio-substituted analog thereof containing hydrocarbon groups with at least three carbon atoms. Also described are lubricant compositions comprising the above ionic liquid and a base oil, wherein the ionic liquid is dissolved in the base oil. Further described are methods for applying the ionic liquid or lubricant composition onto a mechanical device for which lubrication is beneficial, with resulting improvement in friction reduction, wear rate, and/or corrosion inhibition.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2018},
month = {5}
}

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Works referenced in this record:

Comparison of an oil-miscible ionic liquid and ZDDP as a lubricant anti-wear additive
journal, March 2014


Antiwear Performance and Mechanism of an Oil-Miscible Ionic Liquid as a Lubricant Additive
journal, February 2012

  • Qu, Jun; Bansal, Dinesh G.; Yu, Bo
  • ACS Applied Materials & Interfaces, Vol. 4, Issue 2, p. 997-1002
  • DOI: 10.1021/am201646k

Oil-miscible and non-corrosive phosphonium-based ionic liquids as candidate lubricant additives
journal, June 2012