Lubricating compositions with improved antioxidancy

Details Lubricating compositions with improved antioxidancy Lubricating compositions with improved antioxidancy

C - Chemistry, Metallurgy

10

M

C10M 141/06 (2006.01) C10M 139/00 (2006.01) C10M 167/00 (2006.01) F02B 1/04 (2006.01)

Patent

CA 2171536

Crankcase lubricant compositions for use in automobile or truck engines comprise a major amount of a lubricating oil, added copper present in oil-soluble form, at least 2 ppm of molybdenum present in oil-soluble form, and a total of from 0.05 to 2 mass % of one or more oil-soluble aromatic amines. The specified additives provide a higbly effective antioxidant system.

Des compositions lubrifiantes pour carters destinées aux moteurs d'automobiles ou de camions, comprennent une quantité importante d'huile lubrifiante, du cuivre ajouté présent sous une forme soluble dans l'huile, au moins 2 ppm de molybdène présent sous une forme soluble dans l'huile, ainsi qu'un total de 0,05 à 2% en masse d'une ou de plusieurs amines aromatiques solubles dans l'huile. Les additifs spécifiés permettent l'obtention d'un système antioxydant hautement efficace.

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