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US 2011/0237472 A1Published application
Antiwear Angent and Lubricating Compositions Thereof
AssigneeThe Lubrizol Corporation
InventorCharla A. Ramsey
Life of this patent
Estimating the term…
Abstract
The present invention relates to an antiwear agent and lubricating compositions thereof. The invention further provides for a method of lubricating a driveline device or a grease application by employing a lubricating composition containing the antiwear agent.
Claims25
A lubricating composition comprising:
- (a) an oil of lubricating viscosity;
- (b) a sulphur-free amine salt of either (i) a hydroxy-substituted di-ester of phosphoric acid, or (ii) a phosphorylated hydroxy-substituted di- or tri-ester of phosphoric acid;
- and (c) an organo-sulphide, or mixtures thereof.
(canceled)
(canceled)
A lubricating composition comprising:
- an oil of lubricating viscosity;
- an organo-sulphide, or mixtures thereof;
- and a sulphur-free amine salt of a phosphorus compound obtained/obtainable by a process comprising either (A) or (B):
- wherein (A) comprises reacting:
- (i) a hydroxy-substituted di-ester of phosphoric acid;
- and (ii) an oxygen-containing inorganic phosphorus compound to form an acidic phosphorus compound;
- and reacting the acidic phosphorus compound with an amine;
- or
- wherein (B) comprises reacting a hydroxy-substituted di-ester of phosphoric acid with an amine.
6 more elements
23-26. (canceled)
A lubricating composition comprising:
- (a) an oil of lubricating viscosity;
- (b) a sulphur-free amine salt of either (i) a hydroxy-substituted di-ester of phosphoric acid, or (ii) a phosphorylated hydroxy-substituted di- or tri-ester of phosphoric acid;
- and (c) a grease thickener.
Dependencies are inferred from the claim text.