| 摘要 |
PROBLEM TO BE SOLVED: To provide a lubricating agent composition having less vaporization loss at a high temperature, and also excellent in lubricating property at a low temperature. SOLUTION: This lubricating agent composition is provided by containing at least as a part of a lubricating base oil, an ionic liquid (AB) having a low solidifying point, consisting of a mono-quaternarized 2,2'-bi-imidazolium cation or a di-quaternarized 2,2'-bi-imidazolium cation and an anion. If lubricating agent composition is a semisolid state at 30°C, the composition contains at least 1 kind selected from a group consisting of solid lubricating agents and thickening agents. COPYRIGHT: (C)2007,JPO&INPIT |
