| 摘要 |
A lubricating oil for compression-type refrigerators which comprises as the main component thereof a polyvinyl ether compound having excellent compatibility with a hydrofluorocarbon or a hydrochlorofluorocarbon, such as 1,1,1,2-tetrafluoroethane and the like, which can be used as the refrigerant to replace compounds causing environmental pollution, such as dichlorofluoroethane and the like, and having an excellent lubricating property is disclosed. The lubricating oil for compression-type refrigerators comprises as the main component thereof a polyvinyl ether compound having the constituting units expressed by the general formula: <IMAGE> wherein R1, R2, R3 are H or a hydrocarbon group of C1 DIFFERENCE 8, R4 is a bivalent hydrocarbon group of C2 DIFFERENCE 10, R5 is a hydrocarbon group of C1 DIFFERENCE 10 and m is 0 DIFFERENCE 10.
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