| 摘要 |
PROBLEM TO BE SOLVED: To provide a lubricant composition that is excellent in lubricity under severe conditions such as high temperature and/or high pressure.SOLUTION: Provided is a lubricant composition containing at least one condensation product A in which at least a compound a1 that comprises at least one of a hydroxyl group or an amino group within the molecule as well as the total of the number of the hydroxyl groups and the number of the amino groups within the molecule is 3 or more, a succinic acid derivative a2 having a substituent with 4 or more carbon atoms, and a mono-valent alcohol a3 are condensed. |
