| 摘要 |
<p>A lubricating oil composition for machining tool, containing a lubricating base oil, 0.05 to 5 percent by mass of a phosphoric acid ester expressed by (R1(O)3P=0(R1 represents either a C6-15 aryl group or a saturated Ci-20 hydrocarbon group, and can represent the same or different groups), 0.01 to 2 percent by mass of an acidic phosphoric acid ester expressed by (R20)„P(=0) (OH)(3.n)(R2 represents a C4-20 alkyl group, n represents 1 or 2 , and R' can represent the same or different groups), and 0.5 to 5 per cent by mass of a sulfur compound, based on the total amount of the composition.</p> |
