Lubricating compositions with improved oxidation resistance...

Details Lubricating compositions with improved oxidation resistance... Lubricating compositions with improved oxidation resistance...

C - Chemistry, Metallurgy

10

M

C10M 141/00 (2006.01) C10M 133/00 (2006.01) C10M 135/00 (2006.01) C10M 137/00 (2006.01) C10M 159/20 (2006.01) C10M 163/00 (2006.01)

Patent

CA 2147238

Title: LUBRICATING COMPOSITIONS WITH IMPROVED OXIDATION RESISTANCE CONTAINING A DISPERSANT AND AN ANTIOXIDANT Abstract of the Invention This invention relates to a lubricating composition comprising a major amount of an oil of lubricating viscosity with an iodine number less than about 9, (A) one or more antioxidant, and (B) from about 0.01% to about 3% by weight of at least onedispersant or detergent, wherein the total amount of antioxidant is at least about 2% by weight. The additives are useful act controlling oxidation of lubricants. Further, these lubricants have reduced viscosity increase caused by oxidation, while maintaining favorable carbon/varnish ratings.

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