| 摘要 |
PCT No. PCT/JP90/01469 Sec. 371 Date Aug. 14, 1991 Sec. 102(e) Date Aug. 14, 1991 PCT Filed Nov. 13, 1990 PCT Pub. No. WO91/09096 PCT Pub. Date Jun. 27, 1991.There is disclosed a refrigerator oil composition for hydrogen-containing hydrofluorocarbon (hydrogenated Flon compound) refrigerant which comprises a polyoxyalkylene glycol derivative and/or a specific polyester compound, which are/is compounded with (a) an aliphatic acid partially esterified with a polyhydric alcohol and (b) a phosphate compound and/or a phosphite compound. The refrigerator oil composition according to the present invention can be utilized as a refrigerator oil effective for improving wear resistance, especially that between aluminum material and steel material owing to the excellent miscibility with hydrogenated Flon refrigerant such as Flon 134a as well as prominent lubrication performance.
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