| 摘要 |
PROBLEM TO BE SOLVED: To provide a lubricant base oil excellent in heat resistance and low-temperature fluidity in a broad viscosity region, and a lubricant composition using the base oil.SOLUTION: A lubricant base oil contains an ionic liquid 1 composed of a compound represented by formula (1): ZA, wherein Zis a cation, and Ais an anion, and a compound represented by formula (2): AZ-X-ZA, wherein Zand Zare each a cation, Aand Aare each an anion, and X is a linking group connecting the two cations. |
