LUBRICANT COMPOSITION

To provide a lubricant composition which is excellent in metal fatigue life, wear resistance, and electrical insulation properties even when the viscosity is reduced.SOLUTION: The lubricant composition contains: (A) a lubricant base oil; (B) a polydiene having a number average molecular weight of 50...

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Bibliographische Detailangaben
1. Verfasser:	GOTO REINA
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:	To provide a lubricant composition which is excellent in metal fatigue life, wear resistance, and electrical insulation properties even when the viscosity is reduced.SOLUTION: The lubricant composition contains: (A) a lubricant base oil; (B) a polydiene having a number average molecular weight of 500-3,000 and having a functional group on at least one terminal in an amount of 0.6-4.0 mass% based on the mass of the whole lubricant composition; and (C) at least one selected from a phosphorus-based anti-wear agent and a phosphorus-based extreme pressure agent in such an amount that the content of phosphorus is 50-500 mass ppm based on the mass of the whole lubricant composition.SELECTED DRAWING: None 【課題】低粘度化しても、金属疲労寿命、耐摩耗性、及び電気絶縁性に優れる潤滑油組成物を提供することを目的とする。【解決手段】（Ａ）潤滑油基油、（Ｂ）数平均分子量５００〜３０００を有し、少なくとも１の末端に官能基を有するポリジエン潤滑油組成物全体の質量に対して０．６〜４．０質量％となる量、及び、（Ｃ）リン系摩耗防止剤及びリン系極圧剤から選択される少なくとも１種潤滑油組成物全体の質量に対するリンの含有量が５０〜５００質量ｐｐｍとなる量を含むことを特徴とする潤滑油組成物。【選択図】なし