| 摘要 |
PROBLEM TO BE SOLVED: To provide a lubrication oil composition for refrigerator, which has low viscosity, excellent lubricity and high stability for a long term at a low temperature region, especially to provide a lubrication oil composition using a flon (CFC) refrigerant, a non chlorine material, for refrigerator. SOLUTION: The lubrication oil composition for refrigerator comprises an ester which is prepared by reacting, in a specific ratio, a mixed alcohol containing 10-50 mol% of neopentyl glycol, 50-89 mol% of pentaerythritol and 0.03-3 mol% of dipentaerythritol with a mixed saturated straight chain carboxylic acid containing 70-95 mol% of pentanoic acid and heptanoic acid and 5-30 mol% of caprylic acid, the composition has a kinetic viscosity of 6-28 mm<SP>2</SP>/s at 40°C. COPYRIGHT: (C)2007,JPO&INPIT |
