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US 2013/0274162 A1Published application
Lubricating Composition Containing A Detergent
AssigneeThe Lubrizol Corporation
InventorsChristopher L. Friend, William R.S. Barton, Gary M. Walker
Life of this patent
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Abstract
The invention provides a lubricating composition containing an oil of lubricating viscosity and a detergent. The invention further relates to a process to prepare the detergent, and the use of the lubricating composition in a mechanical device such as an internal combustion engine, or a driveline device.
Claims28
A process to prepare a detergent comprising:
- (a) reacting, in the presence of a solvent (typically an oil medium, or a hydrocarbon solvent such as an alkane (typically hexane), or toluene), a mixture of
- (i) an acidic detergent substrate, and
- (iii) a basic metal compound, and optionally further in the presence of an alcohol;
- (b) optionally reacting the product of (a) with carbon dioxide to form an overbased detergent;
- and
- (c) optionally, removing volatiles (typically solvent, water or alcohol) from the product of (a) or (b),
- wherein a hydroxycarboxylic acid, or a reactive equivalent thereof, is added to at least one of any required step selected from the group consisting of (a), (b), (c), and mixtures of steps (a) to (c).
4 more elements
A process to prepare a detergent comprising:
- (a) reacting in the presence of a solvent (typically an oil medium, or a hydrocarbon solvent such as an alkane (typically hexane), or toluene), a mixture of
- (i) an acidic detergent substrate, and
- (iii) a basic metal compound, and optionally further in the presence of an alcohol;
- (b) reacting the product of (a) with a hydroxy-carboxylic acid, or reactive equivalent thereof, and carbon dioxide to form an overbased detergent;
- and
- (c) optionally, removing volatiles (typically solvent, water or alcohol) from the product of (a) or (b).
3 more elements
A process to prepare a detergent comprising:
- (a) reacting in the presence of a solvent (typically an oil medium, or a hydrocarbon solvent such as an alkane (typically hexane), or toluene), and optionally further in the presence of an alcohol, a mixture of
- (i) a hydroxy-carboxylic acid,
- (ii) an acidic detergent substrate, and
- (iii) a basic metal compound;
- (b) reacting the product of (a) with carbon dioxide to form an overbased detergent;
- and
- (c) optionally, removing volatiles (typically solvent, water or alcohol) from the product of (b).
4 more elements
Dependencies are inferred from the claim text.