Disclosed is a refrigerator oil composition comprising at least one base oil selected from mineral oils and synthetic oils, and at least one hydroxy-fatty acid derivative selected from (A) hydroxy-fatty acids or their condensates, (B) metal salts or amine salts of hydroxy-fatty acids or their condensates, and (C) esters of hydroxy-fatty acids. The composition has an excellent lubricating property, while specifically improving the lubricity between aluminium materials and steel materials. This is effective for preventing such materials from being seized and worn, and is suitable as a lubricating oil in refrigerators using hydrogen-containing Flon refrigerants, such as R134a, that do not cause environmental pollution.
本发明公开了一种冷冻机油组合物,该组合物包含至少一种选自矿物油和合成油的基础油,以及至少一种选自 (A) 羟基
脂肪酸或其缩合物、(B) 羟基
脂肪酸或其缩合物的
金属盐或胺盐,以及 (C) 羟基
脂肪酸酯的羟基
脂肪酸衍
生物。该组合物具有极佳的润滑性能,尤其能改善铝材料和钢材料之间的润滑性。这可有效防止此类材料卡死和磨损,适用于使用不会造成环境污染的含氢
氟隆制冷剂(如
R134a)的冰箱的润滑油。