| 摘要 |
This invention provides a lubricating oil compound used for refrigerator with low viscosity, upstanding lubricating property, and good long-term stability at low temperature, especially the lubricating oil compound used for refrigerator using non-chlorofluorocarbon cryogen. This lubricating oil compound comprises the ester made by reaction of mixed alcohol and mixed saturated straight chain carboxyl acid at specialized ratio, and the mobile viscosity of this compound at 40 DEG C is 6-28mm2/s, the said mixed alcohol comprises 10-50mol% neopentyl glycol, 50-89mol% normosterol and 0.03-3mol% dipentaerythritol, the said mixed saturated straight chain carboxyl acid comprises 70-95mol% pentanoic acid and enanthic acid, and 5-30mol% octanoic acid. |
