Patent ID: 6221274
Filing Date: 2001-04-24
Classification: C09K,C10M,C10N

Abstract:
A lubricant composition for a refrigerating machine employing a HFC refrigerant containing at least one selected from the group consisting of HFC-32 and HFC-125, which comprises a base oil of an ester formed from a dihydric or higher polyol as an alcohol and a monobasic aliphatic acid, alone or as a mixture thereof; and additives of, based on the total amount, 1) not less than 0.01 vol % and no higher than 0.7 vol % of a phosphate selected from the group consisting of trialkyl phosphates, triaryl phosphates and trioleyl phosphate, 2) from 0.01 to 1.0 vol % of at least one compound selected from the group consisting of an alkylphosphorothionate and an arylphosphorothionate and 3) from 0.01 to 1.0 vol % of an epoxy compound.