LUBRICANT COMPOSITION
First Claim
1. Lubricant composition comprisingat least one oil-soluble organic molybdenum compound, andat least one alkyl- or aryl-substituted ammonium tungstate,wherein the weight ratio of molybdenum to tungsten in the lubricant composition is at least 2.5:
- 1, and the amount of molybdenum in the lubricant composition is at least 350 ppm based on the total weight of the lubricant composition.
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Abstract
The present invention relates to a lubricant composition Lubricant composition comprising at least one oil-soluble organic molybdenum compound, and at least one alkyl- or aryl-substituted ammonium tungstate, wherein the weight ratio of molybdenum to tungsten in the lubricant composition is at least 2.5:1, and the amount of molybdenum in the lubricant composition is at least 350 ppm based on the total weight of the lubricant composition. The compositions provide unexpected and substantially improved friction and abrasion properties over related compositions devoid of the invention. When using these lubricant compositions, for example in internal combustion engines, the engine power can be increased and the fuel consumption can be reduced.
14 Citations
13 Claims
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1. Lubricant composition comprising
at least one oil-soluble organic molybdenum compound, and at least one alkyl- or aryl-substituted ammonium tungstate, wherein the weight ratio of molybdenum to tungsten in the lubricant composition is at least 2.5: - 1, and the amount of molybdenum in the lubricant composition is at least 350 ppm based on the total weight of the lubricant composition.
- View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. Method for preparing a lubricant composition, comprising the step of:
- adding to a lubricant base composition a first additive comprising at least one oil-soluble organic molybdenum compound and a second additive comprising at least one alkyl- or aryl-substituted ammonium tungstate, wherein the first additive and the second additive are each added to the lubricant composition in such an amount that the weight ratio of molybdenum to tungsten in the lubricant composition is at least 2.5;
1, and the amount of molybdenum in the lubricant composition is at least 350 ppm based on the total weight of the lubricant composition. - View Dependent Claims (13)
- adding to a lubricant base composition a first additive comprising at least one oil-soluble organic molybdenum compound and a second additive comprising at least one alkyl- or aryl-substituted ammonium tungstate, wherein the first additive and the second additive are each added to the lubricant composition in such an amount that the weight ratio of molybdenum to tungsten in the lubricant composition is at least 2.5;
Specification