| 摘要 |
PCT No. PCT/JP92/00504 Sec. 371 Date Nov. 13, 1992 Sec. 102(e) Date Nov. 13, 1992 PCT Filed Apr. 20, 1992 PCT Pub. No. WO92/19704 PCT Pub. Date Nov. 12, 1992.1,1,1,2-Tetrafluoroethane is used in a refrigerator as the refrigerant, while a polyolester oil which is well compatible with the refrigerant is used as the base oil and a phenolic antioxidant, a specified amine and a phosphoric triester are added thereto to give a refrigerator oil composition. Thus the hydrolysis of the polyolester oil can be prevented to thereby protect the sliding members such as a roller and a vane from the corrosion and wear which are caused by the hydrolysis.
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