| 摘要 |
A composition of lubricating oil for a refrigerating machine is provided to prevent coloration of the lubricating oil or sludge generated in using the lubricating oil for a long time and to reduce corrosion of a device generated by hydrolysate or oxides, the acceleration of deterioration of a refrigerant or lubricating oil, and capillary blockage caused by undissolved elements of the refrigerant. A composition of lubricating oil for a refrigerating machine utilizes hydrofluorocarbon, carbon dioxide, or hydrocarbon as a refrigerant. A composition of lubricating oil is produced by mixing at least one kind of compounds of 0.01~1wt.% containing alkylglycidylether, alkylglycidylester, or cyclohexane oxide, at least one kind of compounds of 0.01~1wt.% containing diphenyl carbodiimides or bis(alkylated phenyl) carbodiimide compound, and di-tert-butyl-p-cresol of 0.01~1wt.%. Ester synthetic lubricating base oil is polyolester or complex ester. |
