Triazole-dithiophosphate reaction product and lubricant compositions containing same
AssigneeMobil Oil Corporation
InventorJoosup Shim
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Abstract
Oxidation in lubricants is reduced by adding to the lubricant a small portion of a triazole/dithiophosphate reaction product.
Claims27
A product of reaction made by reacting, at a temperature of from about 70.degree. C. to about 150.degree. C., an alkylbenzotriazole with an organodithiophosphate salt, the reactants being used in quantities such that there are present in the reaction mixture equimolar amounts thereof or amounts in which one is in excess of the other.
A lubricant composition comprising a major proportion of a lubricating oil or grease thereof and a minor antioxidant amount of a product of reaction made by reacting, at a temperatuare of from about 70.degree. C. to about 150.degree. C., an alkylbenzotriazole with an organodithiophosphate salt, the reactants being used in quantities such that there are present in the reaction mixture equimolar amounts thereof or amounts in which one is in excess of the other.
Dependencies are inferred from the claim text.