초록 ▼

A lubricant composition comprising as a base oil one or more ester oils, alkylbenzene oils and mineral oils, and a glycidyl ether compound having at least two epoxy groups is miscible in hydrofluorocarbon and hydrochlorofluorocarbon refrigerants such as R134a, etc. as replacing refrigerants of R12 a

A lubricant composition comprising as a base oil one or more ester oils, alkylbenzene oils and mineral oils, and a glycidyl ether compound having at least two epoxy groups is miscible in hydrofluorocarbon and hydrochlorofluorocarbon refrigerants such as R134a, etc. as replacing refrigerants of R12 and provides a stable operation of refrigeration compressor for a long period of time without causing corrosion and wear of a sliding portion of the compressor.

대표청구항 ▼

A hermetic refrigerant compressor comprising a closed vessel containing a lubricant composition at the bottom and housing therein a motor comprising a rotor and a stator, a rotating shaft fixed on the rotor, a compressing means connected to the motor via the rotating shaft and a refrigerant in said

A hermetic refrigerant compressor comprising a closed vessel containing a lubricant composition at the bottom and housing therein a motor comprising a rotor and a stator, a rotating shaft fixed on the rotor, a compressing means connected to the motor via the rotating shaft and a refrigerant in said compressing means, said lubricant composition comprising as a base oil at least one member selected from the group consisting of ester oils, alkylbenzene oils and mineral oils, and an epoxy compound having at least two epoxy groups, wherein the epoxy compound is at least one member selected from the group consisting of an alkylene glycol diglycidyl ether and an alicyclic epoxy compound; the alkylene glycol diglycidyl ether being at least one member selected from the group consisting of compounds of the formula: [Figure] (1) wherein R1 is an alkylene group; R2 is a hydrogen atom or an alkyl group; and n is an integer of 1 to 22, a compound of the formula: [Figure] a compound of the formula: [Figure] and a compound of the formula: [Figure] [Figure]