Lubricating compositions

Details Lubricating compositions Lubricating compositions

C - Chemistry, Metallurgy

10

M

C10M 141/00 (2006.01) C10M 135/00 (2006.01) C10M 141/08 (2006.01) C10M 141/10 (2006.01) C10M 141/12 (2006.01) C10M 167/00 (2006.01)

Patent

CA 2183676

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 and an oil-soluble diamine sulphide. The specified additives provide a highly effective antioxidant system, which may be used, for example, in lubricating oils which are substantially free of phosphorus.

Compositions lubrifiantes pour carters-moteurs, destinées aux moteurs d'automobiles ou de camions, composées en majeure partie d'une huile lubrifiante à laquelle on a ajouté du cuivre sous une formule soluble dans l'huile ainsi qu'un sulfure de diamide également soluble dans l'huile. Ces additifs constituent un système antioxydant hautement efficace que l'on peut utiliser, par exemple, dans des huiles lubrifiantes sensiblement dépourvues de phosphore.

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