Patent ID: 7824567

Claim:
A refrigerating machine oil composition comprising: a base oil comprising: a polyvinyl ether; and a polyoxyalkylene glycol derivative; wherein a kinematic viscosity of the refrigerating machine oil is 1 to 8 mm 2 /s as measured at 40° C., and the polyoxyalkylene glycol derivative is a compound represented by the general formula (II): R 6 —[(OR 7 ) m —OR 8 ] n (II) wherein R 6 is a hydrogen atom, an alkyl group having 1 to 3 carbon atoms, an acyl group having 2 to 3 carbon atoms; R 7 is an alkylene group having 2 to 4 carbon atoms; R 8 is a hydrogen atom, an alkyl group having 1 to 3 carbon atoms or an acyl group having 2 to 3 carbon atoms; n is 1; and m is a number of more than 2 but not more than 20 on average.