Improved antioxidant system for lubrication base oils

Details Improved antioxidant system for lubrication base oils Improved antioxidant system for lubrication base oils

C - Chemistry, Metallurgy

09

K

C09K 15/28 (2006.01) C09K 15/32 (2006.01) C10M 141/08 (2006.01) C10M 141/10 (2006.01) C10M 141/12 (2006.01) C10M 163/00 (2006.01) C10M 169/04 (2006.01)

Patent

CA 2240973

This invention relates to antioxidant compositions comprising (A) at least one secondary diarylamine, (B) at least one sulfurized olefin and/or sulfurized hindered phenol, and (C) at least one oil soluble molybdenum compound. These antioxidant compositions are highly effective at providing oxidative stability to lubricating compositions, especially for highly saturated, low sulfur lubrication base oils.

Cette invention concerne des compositions antioxydantes comprenant : A) au moins une diarylamine secondaire; B) au moins une oléfine sulfurée et/ou au moins un phénol sulfuré encombré stériquement; et C) au moins un composé du molybdène soluble dans l'huile. Ces compositions antioxydantes sont très efficaces pour stabiliser des compositions lubrifiantes, spécialement les huiles de base lubrifiantes hautement saturées et à faible teneur en soufre.

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