REFRIGERATING MACHINE OIL COMPOSITION

摘要

A refrigerating machine oil composition which is less apt to cause capillary tube clogging in the case where a hydrofluorocarbon, hydrocarbon, ether, carbon dioxide, or ammonia refrigerant is used. The composition comprises a base oil comprising at least one oxygenic synthetic oil selected among polyvinyl ethers and polyol esters and either a specific polyalkylene glycol alkyl ether or an alkylbenzene having a number-average molecular weight of 100 to 1,000, the amounts of the ether and the alkylbenzene being 1 to 20 wt.% and 1 to 40 wt.%, respectively, based on the whole composition.