| 摘要 |
PROBLEM TO BE SOLVED: To provide a lubricating oil for a liquid bearing, having low viscosity, little amount of evaporation, and low-temperature fluidity. SOLUTION: The lubricating oil for the liquid bearing is characterized by using a high-purity diester synthesized from a carboxylic acid raw material containing≥90 mass% azelaic acid and an alcohol raw material containing≥90 mass% 2-ethyl-1-hexanol as a base oil. The carboxylic acid raw material has preferably≤5 mass% total content of glutaric acid, adipic acid, pimelic acid, suberic acid, sebacic acid and 1,9-nonamethylenecarboxylic acid. COPYRIGHT: (C)2008,JPO&INPIT |
