| 摘要 |
PROBLEM TO BE SOLVED: To provide a novel lubricant additive including an ashless oily agent-based friction modifier.SOLUTION: The provided lubricant additive includes a compound expressed by the general formula (1) (in the general formula (1), R is a hydrocarbon-containing group having one or more carbon atoms; Xis a single bond, -CONH- group, -NHCO- group, -NH- group, or coupling group having 0 or 1 carbon atom, possessing one or more hetero atoms, and possessing no hydrogen atom coupled with the hetero atoms; Xis a single bond or coupling group having 0 or 1 carbon atom, possessing one or more hetero atoms, and possessing no hydrogen atom coupled with the hetero atoms; Z is a -CN group, -COCHgroup, or group having 0 to 6 carbon atoms, possessing one or more hetero atoms, and possessing a hydrogen atom coupled with the hetero atoms; a is 0 or 1; b is 1 or 2; c is 0 or 1; d is an integer of 0 to 2; in a case where d is at least 1, Y is a -CH- group or -OCHCH- group). |
