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US 8,507,417 B2Granted
Organomolybdenum-boron additives
AssigneeExxonMobil Research and Engineering Company
InventorsWilliam H. Buck, Douglas E. Deckman, L. Oscar Farng, Andrew G. Horodsky, Marcia G. Rogers, Thomas J. Karol
Life of this patent
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Abstract
Disclosed are sulfur and phosphorous free, borated organomolybdenum compositions containing borated alcohols. These compositions can be formulated with ashless antioxidants and low levels of phosphorous containing antiwear compounds to provide improved lubricating compositions.
Claims18
A lubricant additive composition comprising:
- at least one phosphorous and sulfur free, hydroxyl containing borated organomolybdenum compound;
- and
- at least one borated alcohol having from about 3 to about 35 carbon atoms.
A lubricant composition comprising:
- a major amount of an oil of lubricating viscosity;
- an effective amount of at least one sulfur and phosphorous free, hydroxyl containing borated organomolybdenum compound;
- at least one oil soluble, phosphorous-containing antiwear compound in an amount such that the weight percent of total phosphorous in the total lubricating composition is less than about 0.06 wt %;
- and
- an effective amount of an ashless antioxidant.
2 more elements
A lubricant additive composition comprising:
- at least one phosphorous and sulfur free, hydroxyl containing borated organomolybdenum compound, wherein the hydroxyl containing borated organomolybdenum compound is a reaction product of at least one organomolybdenum compound having at least one reactive Mo=O group, at least one boronating agent, and at least one alcohol having from 3 to 35 carbons;
- and
- at least one borated alcohol having from about 3 to about 35 carbon atoms.
Dependencies are inferred from the claim text.