Process for preparing a sulfurized molybdenum-containing composition and lubricating oil containing the composition
First Claim
1. A process for preparing a sulfurized molybdenum-containing composition which comprises (1) reacting an acidic molybdenum compound and a basic nitrogen compound selected from the group cnsisting of a succinimide, carboxylic acid amide, hydrocarbyl monoamine, hydrocarbyl polyamine, Mannich base, phosphonamide, thiophosphonamide, phosphoramide, dispersant viscosity index improver, or mixtures thereof, in the presence of a polar promoter, to form a molybdenum complex wherein from 0.01 to 2.00 atoms of molybdenum are present per basic nitrogen atom, and the promoter is present in the ratio of 0.01 to 50 mols of water per mol of molybdenum;
- and (2) reacting said complex with carbon disulfide, in an amount to provide 0.1 to 4.0 atoms of sulfur per atom of molybdenum, to form a sulfur- and molybdenum-containing composition.
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Abstract
Antioxidant additives for lubricating oil are prepared by (1) combining a polar solvent, an acidic molybdenum compound and an oil-soluble basic nitrogen compound to form molybdenum-containing complex and (2) contacting said complex with carbon disulfide to form a sulfur-and molybdenum-containing composition.
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Citations
16 Claims
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1. A process for preparing a sulfurized molybdenum-containing composition which comprises (1) reacting an acidic molybdenum compound and a basic nitrogen compound selected from the group cnsisting of a succinimide, carboxylic acid amide, hydrocarbyl monoamine, hydrocarbyl polyamine, Mannich base, phosphonamide, thiophosphonamide, phosphoramide, dispersant viscosity index improver, or mixtures thereof, in the presence of a polar promoter, to form a molybdenum complex wherein from 0.01 to 2.00 atoms of molybdenum are present per basic nitrogen atom, and the promoter is present in the ratio of 0.01 to 50 mols of water per mol of molybdenum;
- and (2) reacting said complex with carbon disulfide, in an amount to provide 0.1 to 4.0 atoms of sulfur per atom of molybdenum, to form a sulfur- and molybdenum-containing composition.
- View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
Specification