| 摘要 |
A lubricating oil additive which comprises one or more compounds each represented by the following general formula (1), (2), or (3). (In general formulae (1) and (2), R1 is a hydrocarbon-containing C1 or higher group and Z1 is -CN, -CO2CH3, -OCOCH3, -OCON(CH3)2, or a C0-6 group having at least one heteroatom and a hydrogen atom bonded to the heteroatom.) (In general formula (3), R2 is a hydrocarbon-containing group; Z2 is -CN, -CO2CH3, -OCOCH3, -OCON(CH3)2, or a group having at least one heteroatom and a hydrogen atom bonded to the heteroatom; and A is -O-, -CO-, -S-, -SO-, -SO2-, or -CR5R6-.) |
