LUBRICATING OIL COMPOSITION

PROBLEM TO BE SOLVED: To provide an ashless load-bearing lubricating oil composition that is useful both in terms of environmental protection and safety and in terms of practical lubricating oil performance, has excellent thermal stability and water resistance, and has excellent extreme pressure per...

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Bibliographische Detailangaben
Hauptverfasser:	OSHIO TASASHI, YAGISHITA KAZUHIRO
Format:	Patent
Sprache:	eng ; jpn
Schlagworte:	CHEMISTRY FUELS 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:	PROBLEM TO BE SOLVED: To provide an ashless load-bearing lubricating oil composition that is useful both in terms of environmental protection and safety and in terms of practical lubricating oil performance, has excellent thermal stability and water resistance, and has excellent extreme pressure performance and wear resistance even in harsh high-load circumstances.SOLUTION: The lubricating oil composition contains a lubricating base oil, and 10-10000 mass ppm of a phosphorus compound represented by formula (1) in terms of the phosphorus amount with respect to the total amount of the composition. (In the formula, Rand Rrepresent C2 to C18 hydrocarbon groups and Rrepresents a C1 to C4 hydrocarbon group.)SELECTED DRAWING: None 【課題】環境保護や安全性の面と潤滑油の実用性能の両面から有用な、熱安定性・耐水性に優れ、さらには高荷重の過酷な環境下でも優れた極圧性および耐摩耗性を有する無灰の耐荷重性潤滑油組成物を提供する。【解決手段】潤滑油基油、および式（１）で表されるリン化合物を、組成物全量基準、リン量換算で１０〜１００００質量ｐｐｍ含有する潤滑油組成物。（式中、Ｒ１、Ｒ２は炭素数２〜１８の炭化水素基、Ｒ３は炭素数１〜４の炭化水素基を示す。）【選択図】なし