Lubricating oil composition

The disclosed lubricating oil composition has a kinematic viscosity of 30 mm2/s to 750 mm2/s at 40 DEG C, contains 5 ppm to 75 ppm of boron atoms, and contains the following (i) to (iii) (wherein the total of (i) to (iii) is 100% by mass): (i) 90 to 10% by mass of a (co)polymer that has a kinematic...

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Bibliographische Detailangaben
Hauptverfasser:	TOHI YASUSHI, IIMURA YURIKO, KANESHIGE RYOUSUKE, TORIUMI MICHIO, YOSHIZONO JUNICHI, ABE SHOTA
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	BLASTING CHEMISTRY ENGINEERING ELEMENTS AND UNITS FUELS GEARING GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS HEATING INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATINGCOMPOSITIONS LIGHTING LUBRICANTS LUBRICATING COMPOSITIONS MECHANICAL ENGINEERING METALLURGY PEAT PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MONOXIDE THERMAL INSULATION IN GENERAL USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATINGINGREDIENTS IN A LUBRICATING COMPOSITION WEAPONS
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Beschreibung
Zusammenfassung:	The disclosed lubricating oil composition has a kinematic viscosity of 30 mm2/s to 750 mm2/s at 40 DEG C, contains 5 ppm to 75 ppm of boron atoms, and contains the following (i) to (iii) (wherein the total of (i) to (iii) is 100% by mass): (i) 90 to 10% by mass of a (co)polymer that has a kinematic viscosity of 45 mm2/s or less at 100 DEG C, in which 60% by mole or more of the constitutional units thereof is 1-decene, and that has an acid value of less than 0.1 mgKOH/g; (ii) 5 to 85% by mass of a (co)polymer that has a kinematic viscosity of 35 mm2/s to 1,500 mm2/s at 100 DEG C, in which 90% by mole or more of the constitutional units thereof is 1-octene, and that has a molecular-weight distribution of 1.8 or less; and (iii) 5 to 15% by mass of a fatty acid ester.