| 摘要 |
Lubricant composition for refrigerator is provided to exhibit low viscosity, favorable lubrication and excellent stability at low temperature, and be employed in preparing the working fluid for refrigerator by comprising non-chlorine-based fluorocarbon coolant in the composition. The composition includes ester compound formulated by reacting in specific composition: alcohol mixture containing 10 to 50mol.% of neopentylglycol, 50 to 89mol.% of pentaerythritol and 0.03 to 3mol.% of dipentaerythritol; and saturated straight chain carboxylic acid mixture containing 70 to 95mol.% of pentanoic acid and heptanoic acid and 5 to 30mol.% of caprylic acid to form ester compound. The composition has dynamic viscosity ranging from 6 to 28Mm^2/S at 40deg.C. The composition is used in preparing the working fluid useful to coolant compression type of refrigerator. |
