| 摘要 |
PROBLEM TO BE SOLVED: To provide a refrigerator oil composition which satisfies both lubricating properties and stability each at a high level in refrigerating air-conditioning equipment where an HFC refrigerant or the like is used and permits stable operation of the refrigerating air-conditioning equipment for a long period of time. SOLUTION: The refrigerator oil composition comprises a polyol ester as a base oil, a phosphorothionate, a phosphorus additive other than the phosphorothionate and a glycidyl ester-type epoxy compound. COPYRIGHT: (C)2005,JPO&NCIPI |
