Sulfonate dispersant compositions

Details Sulfonate dispersant compositions Sulfonate dispersant compositions

C - Chemistry, Metallurgy

10

M

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C10M 141/08 (2006.01) C10M 141/10 (2006.01) C10M 163/00 (2006.01)

Patent

CA 1121793

Abstract of the Disclosure A lubricating oil of outstanding detergency comprising an oil of lubricating viscosity and (A) from 2.5 to 50 millimols per kilogram of an alkaline earth metal substantially saturated aliphatic sulfonate wherein the aliphatic group contains from about 20 to 300 carbon atoms, and (B) from 0.5 to 80 weight percent of a detergent- dispersant selected from the class consisting of alkenyl monosuccinimides wherein the alkenyl group contains about 50 to 300 carbon atoms, an ester of hydrocarbon-substituted succinic acid wherein the hydrocarbon group contains at least 50 carbon atoms, monohydroxyalkyl hydrocarbyl thiophosphonate, and a high-molecular-weight Mannich base and the borated complexes thereof. The lubricating oil thus prepared possesses superior detergency as compared to the combination of the dispersant or detergent and conventional sulfonate.

324332

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