| abstract |
(57) [Summary]n[Purpose] Dichlorodiene, a refrigerant that causes problems in environmental pollution 1,1,1,2- that can substitute for fluoromethane Hydrofluorocarbons such as tetrafluoroethane Good compatibility with and hydrochlorofluorocarbons It has low hygroscopicity and excellent stability and lubrication performance. To provide a lubricating oil for a compact refrigerator.n[Structure] A polymer having a structural unit represented by the general formula (I). Rivinyl ether compound, structure represented by general formula (I) Poly having a structural unit and a structural unit represented by the general formula (II) Vinyl ether-based compounds and polyvinyl acetates thereof A mixture of tellurium compounds as the main component, and The carbon / oxygen molar ratio of the polyvinyl ether compound is 4. It is a lubricating oil for a compression type refrigerator of 2 to 7.0.n[Chemical 1]n[In the formula, R 1 ~ R 3 Is H or C 1 ~ C 8 Hydrocarbon Group, R Four Is C 1 ~ C Ten A divalent hydrocarbon group or C 2 ~ C 20 A divalent ether-bonded oxygen-containing hydrocarbon group, R Five Is C 1 ~ C Ten Hydrocarbon group, m is a number from 0 to 10, R 6 ~ R 9 Is H or C 1 ~ C 20 Is a hydrocarbon group. ] |