Lubricating composition containing an aromatic compound
AssigneeThe Lubrizol Corporation
InventorsMatthew D. Gieselman, Seth L. Crawley, David J. Moreton, Paul R. Stevenson, Jeffry G. Dietz
Life of this patent
Estimating the term…
Abstract
The invention provides a lubricating composition containing an aromatic compound and an oil of lubricating viscosity. The invention further relates to the use of the lubricating composition in an internal combustion engine. The invention further relates to the use of the aromatic compound as an antiwear agent.
Claims15
1-15. (canceled)
The lubricating composition of claim 1, wherein two of Y1, Y2 and Y3 are OR2 groups and the third of Y1, Y2 and Y3 is hydrogen.
The lubricating composition of claim 1, wherein Y1, Y2 and Y3 are OR2 groups.
The lubricating composition of claim 1, wherein the aromatic compound is present in a range of 0.01 wt % to 10 wt % of the lubricating composition.
The lubricating composition of claim 1, further comprising at least one of an antiwear agent, a dispersant viscosity modifier, a friction modifier, a viscosity modifier, and antioxidant, an overbased detergent, or mixtures thereof.
The lubricating composition of claim 1, further comprising a metal dihydrocarbyl dithiophosphate, wherein the metal dihydrocarbyl dithiophosphate contributes at least 100 ppm of phosphorus to the lubricating composition.
The lubricating composition of claim 1 further comprising an overbased detergent having a total base number of 250 to 600.
The lubricating composition of claim 1, wherein the oil of lubricating viscosity comprises an API Group I, or Group II or Group III oil.
A lubricating composition comprising an oil of lubricating viscosity and an aromatic compound of formula (1):
- wherein
- R1 is —CH═CHC(O)—XR3;
- each Y1, Y2 and Y3 is independently —H or —OR2 with the proviso that at least two of Y1, Y2 and Y3 are —OR2 and where at least two —OR2 groups are adjacent to one another;
- R2 is independently hydrogen or a linear or branched hydrocarbyl group containing 1 to 10 carbon atoms;
- R3 is a linear or branched hydrocarbyl group;
- X is —O—, —S—, or >NR4;
- and
- R4 is hydrogen or a linear or branched hydrocarbyl group containing 1 to 5 carbon atoms.
Dependencies are inferred from the claim text.