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US 6,784,142 B2Granted
Lubricating oil composition comprising borated and EC-treated succinimides and phenolic antioxidants
AssigneesChevron Oronite Company LLC, Chevron Oronite Technology B.V.
InventorsWillem Van Dam, Peter Kleijwegt
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Abstract
An additive package comprising one or more borated dispersants, one or more EC-treated dispersants, and one or more phenolic antioxidants; a lubricating oil composition comprising said additive package; and a method of controlling bearing corrosion and valve train wear using said lubricating oil.
Claims12
A lubricating oil additive composition comprising:
- (a) one or more ethylene carbonate-treated succinimides,
- (b) one or more borated succinimides, and
- (c) one or more phenolic antioxidants selected from those of the formulae:
- wherein each R is an alkyl group of 7 to 9 carbon atoms.
1 more element
A lubricating oil composition comprising a major amount of an oil of lubricating viscosity and a minor amount of the lubricating oil additive composition comprising:
- (a) one or more ethylene carbonate-treated succinimides,
- (b) one or more borated succinimides, and
- (c) one or more phenolic antioxidants selected from those of the formulae:
- wherein each R is an alkyl group of 7 to 9 carbon atoms.
1 more element
Dependencies are inferred from the claim text.