REFRIGERATING MACHINE OIL COMPOSITION

摘要

PROBLEM TO BE SOLVED: To provide a refrigerating machine oil composition having superior lubricating properties in refrigerating/air conditioning devices using various types of refrigerant such as HFCs, and which permits stable operation of refrigerating/air conditioning devices over a long period of time.

SOLUTION: The refrigerating machine oil composition comprises a predetermined base oil, and at least one oxygen-containing compound selected from the following (A1)-(A6): (A1) alkylene oxide adduct of a polyhydric alcohol having 3-6 hydroxy groups; (A2) polyalkylene glycol; (A3) a 3-20C trihydric alcohol other than (A1); (A4) a 2-20C dihydric alcohol other than (A2); (A5) a hydrocarbyl ether of (A1)-(A4); (A6) a hydrocarbyl ester of (A1)-(A4); (A5) a hydrocarbyl ether of (A1)-(A4); and (A6) a hydrocarbyl ester of (A1)-(A4).

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