Lubricant and fuel compositions containing an organo-substituted diphenyl sulfide
AssigneeMobil Oil Corporation
InventorsAndrew G. Horodysky, Ross A. Kremer
Life of this patent
Estimating the term…
Abstract
Lubricant or fuel compositions comprising 1) an organo, ring-substituted diphenyl sulfide, e.g. a monoalkyldiphenyl sulfide; 2) a dispersant component comprising at least one polymer-substituted succinimide, succinamide and/or succinic acid ester in which the alcohol or phenol moiety of the ester group may optionally contain amide, imide or amine nitrogen functionality, or mixtures of said amide, imide and/or ester; and 3) a dithiophosphate, e.g., a zinc dithiophosphate. The compositions have superior antiwear and extreme pressure properties.
Claims20
A lubricant composition comprising 1) about 2 to about 90 wt. % of a substantially monoalkyl ring-substituted diphenyl sulfide in which the alkyl group contains about 5 to 40 carbon atoms;
- 2) about 1 to about 7 wt. % of a dispersant component comprising a polymer-substituted succinimide, succinamide, and/or succinic acid ester, and 3) about 0.1 to about 3 . wt. % of a dithiophosphate.
Dependencies are inferred from the claim text.