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

Qu, Jun; Luo, Huimin

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A - human necessities
A01 - agriculture
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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: 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.

Inventors:: Qu, Jun; Luo, Huimin

Issue Date:: 2019-10-08

Research Org.:: Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)

Sponsoring Org.:: USDOE

OSTI Identifier:: 1576434

Patent Number(s):: 10435642

Application Number:: 15/928,362

Assignee:: UT-Battelle, LLC (Oak Ridge, TN)

Patent Classifications (CPCs):: C - CHEMISTRY C10 - PETROLEUM, GAS OR COKE INDUSTRIES C10M - LUBRICATING COMPOSITIONS

C - CHEMISTRY C10 - PETROLEUM, GAS OR COKE INDUSTRIES C10N - INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS

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C - CHEMISTRY C10 - PETROLEUM, GAS OR COKE INDUSTRIES C10M - LUBRICATING COMPOSITIONS
C10M137/04 - Phosphate esters
C10M137/10 - Thio derivatives
C10M137/12 - having a phosphorus-to-carbon bond
C10M171/00 - Lubricating compositions characterised by purely physical criteria, e.g. containing as base-material, thickener or additive, ingredients which are characterised exclusively by their numerically specified physical properties, i.e. containing ingredients which are physically well-defined but for which the chemical nature is either unspecified or only very vaguely indicated
C10M2203/1025 - used as base material
C10M2223/04 - Phosphate esters
C10M2223/045 - Metal containing thio derivatives
C10M2223/06 - having phosphorus-to-carbon bonds

C - CHEMISTRY C10 - PETROLEUM, GAS OR COKE INDUSTRIES C10N - INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
C10N2010/04 - Group 2
C10N2020/02 - Viscosity
C10N2030/06 - Oiliness
C10N2030/08 - Resistance to extreme temperature
C10N2030/10 - Inhibition of oxidation, e.g. anti-oxidants

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DOE Contract Number:: AC05-00OR22725

Resource Type:: Patent

Resource Relation:: Patent File Date: 2018 Mar 22

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., 2019. 
        Web.

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                    Qu, Jun, & Luo, Huimin. Ionic liquids containing symmetric quaternary phosphonium cations and phosphorus-containing anions, and their use as lubricant additives.  United States.

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                    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/1576434.

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@article{osti_1576434,

  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: 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         = {2019},

  month        = {10}

}

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