abstract |
A refrigerating machine oil composition comprising:n (A) a hydrocarbon oil; and (B) an alicyclic polycarboxylic acid ester compoundnhaving an alicyclic ring and at least two ester groupsnrepresented by formula (1) bonded to adjacent carbon atomsnof the alicyclic ring:n -COOR 1 nwherein R 1 represents a hydrocarbon group having 1-30 carbonnatoms, and R 1 of each of the ester groups may be the samenor different from each other. |