Ashless-friction modifiers for lubricating compositions
OwnerDaniel J. Saccomando, Scott Capitosti +1inventors
InventorsDaniel J. Saccomando, Scott Capitosti, William R. S. Barton
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Abstract
The invention provides a lubricating composition containing an oil of lubricating viscosity and an ashless ketone compound with at least one of a hydroxy group and an ether linkage attached to the carbon atom adjacent to the carbonyl carbon of the ketone, especially α-hydroxyketone. The invention further relates to methods of lubricating an internal combustion engine by supplying the described lubricating composition to the internal combustion engine. The invention further relates to the use of the α-hydroxyketone compound as a friction modifier and an antiwear agent.
Claims10
A lubricating composition comprising an oil of lubricating viscosity and 0.2 wt % to 3 wt %, based on a total weight of the lubricant composition of an ashless α-hydroxyketone represented by the formula:
- wherein:
- R1 is a nitrogen-free alkyl group containing 10 to 16 carbon atoms;
- R2 and R3 are each independently hydrogen or a hydrocarbyl group of 1 to 6 carbons;
- R4 is hydrogen;
- and 0.5 wt % to 1.5 wt % zinc dialkyldithiophosphate, based on a total weight of the lubricating composition.
Dependencies are inferred from the claim text.