| abstract |
(57) [Abstract] [PROBLEMS] To provide an ester-based lubricating oil composition having properties such as a high viscosity index, high oxidation stability, and hydrolysis resistance, and a novel ester compound used in the ester-based lubricating oil composition. To provide. A tertiary carboxylic acid ester compound having 13 or more carbon atoms obtained from a tertiary carboxylic acid having 13 or more carbon atoms and a hindered alcohol, and a lubricating oil composition containing the ester compound. |