Antioxidant combination for oxidation and deposit control in lubricants containing molybdenum and alkylated phenothiazine
AssigneeAfton Chemical Corporation
InventorsCarl K. Esche JR., Vincent J. Gatto
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Abstract
The invention relates to a lubricating oil composition having improved antioxidant properties, and which contains a molybdenum compound and an alkylated phenothiazine. Further, it may also include a secondary diarylamine, preferably an alkylated diphenylamine. This combination of additives provides improved oxidation control and friction modifier performance to the lubricating oil. The composition is particularly suited for use as a crankcase lubricant, or a transmission lubricant, including low levels and zero levels of phosphorus.
Claims89
A lubricating composition comprising a major amount of lubricating oil, and a minor amount of an oil soluble secondary diarylamine, an oil soluble molybdenum compound, and an oil soluble alkylated phenothiazine.
A lubricating composition comprising a major amount of lubricating oil, an oil soluble molybdenum compound, and an oil soluble alkylated phenothiazine.
A lubricating composition additive comprising an oil soluble secondary diarylamine, an oil soluble molybdenum compound, and an oil soluble alkylated phenothiazine.
A lubricating composition additive comprising an oil soluble molybdenum compound and an oil soluble alkylated phenothiazine.
A method for improving the antioxidancy and/or anti-wear properties of a lubricating composition comprising including in the lubricating composition an oil soluble molybdenum compound and an oil soluble alkylated phenothiazine.
Dependencies are inferred from the claim text.