MOTOR OIL ADDITIVE COMPLEX, AND MOTOR OIL Russian patent published in 2003 - IPC

FIELD: lubricants. SUBSTANCE: motor oil additive complex for internal combustion engine oils contains, wt %: alkaline calcium sulfonate, 10-40; sulfurized C9-C12- alkylphenolate calcium salt, 10-40; zinc dithiophosphate, 8-25; and product of consecutive reaction of alkylenesuccinamide derivative of polyethylenepolyamine with ammonium molybdate and maleic anhydride, 20-50. Instead of zinc dithiophosphate, additive complex may contain zinc di-C3-C8-alkyl dithiophosphate, in particular product of consecutive reaction of isopropyl alcohol/n-butyl alcohol mixture with phosphorus pentasulfide and zinc oxide. Additive complex can further contain mineral oil as diluent up to 15%. Mineral- and/or synthetic-origin motor oil for internal combustion engines may contain 5-15 wt % of aforesaid additive complex additive and may further contain thickening agent, depressant, and antifoaming agent. EFFECT: improved antioxidant and anticoking properties of additive. 5 cl, 2 tbl