Lubricating oils containing acetoacetanilides as antioxidants
AssigneeUop LLC
InventorJohn T. Roberts
Life of this patent
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Abstract
Acetoacetanilides and related beta-ketoacetanilides are effective antioxidants when used as additives in petroleum products and petroleum-related products. Antioxidant properties are displayed at levels as low as about 0.05 weight percent.
Claims11
A composition comprising a major amount of a lubricating oil or grease thereof and a minor antioxidant amount of a beta-ketoacetanilide of the structure ##STR2## wherein X is selected from the group consisting of hydrogen, halogen, nitro, cyano, carboxyl, hydroxyl, alkyl, alkoxy, and alkylmercapto monieties where the carbonaceous portion contains up to about 18 carton atoms and is saturated, and Y is selected from the group consisting of alkyl and alkoxyl moieties whose carbonaceous portion contains up to about ten carbon atoms and is saturated.
A composition comprising a major amount of a lubricating oil or grease thereof and containing a minor antioxidant amount of an acetoacetanilide.
Dependencies are inferred from the claim text.