LUBRICANT AGENT COMPOSITION AND LUBRICANT OIL COMPOSITION CONTAINING SAME

An object of the present invention is to provide: an additive composition for a lubricating oil that exhibits high friction-reducing effects even under severe conditions in which high contact pressure is applied; and a lubricating oil composition obtained by blending the composition in a base oil. I...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	MORIIZUMI, Yukiya, YAMAMOTO, Kenji
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	CHEMISTRY FUELS INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATINGCOMPOSITIONS LUBRICANTS LUBRICATING COMPOSITIONS METALLURGY PEAT PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MONOXIDE USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATINGINGREDIENTS IN A LUBRICATING COMPOSITION
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Beschreibung
Zusammenfassung:	An object of the present invention is to provide: an additive composition for a lubricating oil that exhibits high friction-reducing effects even under severe conditions in which high contact pressure is applied; and a lubricating oil composition obtained by blending the composition in a base oil. In order to achieve the object, the present invention provides the following lubricant composition and a lubricant oil composition obtained by blending the composition in a base oil. The lubricant composition includes: a molybdenum dithiocarbamate (A) represented by the general formula (1) ; and a copolymer (B) that includes, as essential constitutional units, a unit (a) represented by the general formula (2) and a unit (b) represented by the general formula (3), has a weight-average molecular weight of from 5,000 to 150,000, and has a composition ratio of the unit (a) to the unit (b), i.e., (a)/(b), of from 50/50 to 90/10 by mole.