Stress activated high load additives for lubricant compositions
AssigneeExxon Research & Engineering Co.
InventorsManuel A. Francisco, Thomas L. Ashcraft, Alan R. Katritzky
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Abstract
A lubricant composition which comprises a major amount of a lubricating oil base stock and a minor amount of a benzotriazole of the formula: ##STR1## where R and R.sup.1 are hydrocarbyl groups having from 1 to 30 carbon atoms. The load-carrying properties of the benzotriazoles of the formula (I) are activated by subjecting the lubricant composition to load-carrying conditions.
Claims8
A lubricant composition which comprises:
- (a) a major amount of a lubricating oil basestock, and
- (b) a minor amount of a benzotriazole of the formula ##STR5## Where R and R.sup.1 are independently hydrocarbyl groups having from 1 to 30 carbon atoms.
A method for improving the load-carrying capacity of a lubricant composition under load conditions which comprises adding to a major amount of a lubricant basestock a minor amount of a benzotriazole of the formula ##STR6## where R and R.sup.1 are independently hydrocarbyl groups having from 1 to 30 carbon atoms, and subjecting the lubricant composition to load conditions wherein the benzotriazole becomes load-carrying activated under load conditions.
Dependencies are inferred from the claim text.