Lubricating oil composition for 2 cycle or rotary engine
AssigneeIdemitsu Kosan Co., Ltd.
InventorsTomomi Miyaji, Takeshi Matsuoka
Life of this patent
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Abstract
Disclosed is a lubricating oil composition for 2 cycle or rotary engine, superior in biodegradability, having sufficiently high miscibility with gasoline and further superior in detergency. The lubricating oil composition is prepared by mixing (A) an ester of hindered alcohol and fatty acid having 5 to 14 carbon atoms and (B) either or both of a poly (oxyalkylene) aminocarbamate and an alkenylsuccinimide, or to them adding (C) either or both of a hydrocarbon having a boiling point of 500.degree. C. or below and an aromatic content of 2% or below and an ether having an aromatic content of 2% or below and 6 to 20 carbon atoms.
Claims12
A lubricating oil composition for a two-cycle or rotary engine, comprising (A) an ester of a hindered alcohol and a fatty acid having 5 to 14 carbon atoms, (B) at least one compound of a poly(oxyalkylene) aminocarbamate and an alkenylsuccinimide, and (C) at least one compound of a hydrogenated light mineral oil with a boiling point of 150.degree. to 450.degree. C. and an aromatic content of 2% or below, a polymer of ethylene, propylene or butene and a copolymer thereof, and an ether having an aromatic content of 2% or below and 6 to 20 carbon atoms as the essential component.
Dependencies are inferred from the claim text.