| abstract |
The present invention is capable of providing a lubricant oil composition having excellent heat/chemical stability even if used in a compression refrigerator using a saturated fluorinated hydrocarbon refrigerant having a low carbon number and a low global warming coefficient, by using a refrigerant including a C1-3 saturated fluorinated hydrocarbon that uses as a base oil an oxygen-containing organic compound comprising at least one type selected from a polyoxyalkylene glycol, a polyvinyl ether, a copolymer of a poly(oxy) alkylene glycol and a polyvinyl ether, a copolymer of a poly(oxy) alkylene glycol monoether and a polyvinyl ether, and a polyol ester, each having a water content of no more than 500 ppm by mass. |