MULTIPURPOSE MOTOR OIL ADDITIVES, LUBRICATION COMPOSITION, AND ADDITIVE COMPOSITION Russian patent published in 2004 - IPC

Abstract RU 2237705 C1

FIELD: lubricants.

SUBSTANCE: additive contains 10-50% metal dialkyl dithiocarbamate and 50-90% zinc dithiophosphate. The latter is a product of reaction of phosphorus pentasulfide with C₃-C₈-alcohol or C₈-C₁₂-alkylphenol followed by neutralization with zinc oxide. Metal dialkyl dithiocarbamate has general formula [R₂NC(S)S]_nMe, wherein Me is copper, nickel, cobalt, zinc, molybdenum, or cadmium; n valence of metal; and R C₁-C₈-alkyl radical. Lubrication composition contains 0.5 to 2.0 wt % of the indicated additive. Motor oil additive composition contains high-alkalinity sulfonate, phenate, alkali metal alkylsalicylate, ash-free dispersant, and 15-30% of the multipurpose additive.

EFFECT: upgraded antioxidant, antiwear, and detergent optionally substituted of lubrication oil and enabled preparation of motor oils with reduced content of phosphorus thereby prolonging lifetime of afterburner catalysts.

3 cl, 8 tbl, 10 ex

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RU 2 237 705 C1

Authors

Dates

2004-10-10—Published

2003-04-16—Filed