| 摘要 |
PROBLEM TO BE SOLVED: To provide a lubricating oil composition which has a sufficiently long oxidation life, even in cases where it is used in turbine bearings or the like when generating electricity with gas turbines or combined-cycle turbines running in severe high-temperature environments. SOLUTION: The high-quality lubricating oil composition is made to include a phenol-based anti-oxidant represented by formula (1) and an amine-based anti-oxidant in a base oil of a mineral oil and/or a synthetic oil and consequently has high oxidative stability and excellent energy conservation with low viscosity increase (wherein the formula, R<SP>5</SP>and R<SP>6</SP>may be the same or different and each independently represents a 1C-4C alkyl group or a 3C-8C cyclic alkyl group, and R<SP>7</SP>represents a 1C-8C alkylene group). COPYRIGHT: (C)2010,JPO&INPIT |
