REFRIGERATOR OIL AND WORKING FLUID COMPOSITION FOR REFRIGERATOR

摘要

PROBLEM TO BE SOLVED: To provide a refrigerator oil which is used in a refrigeration system using an unsaturated fluorinated hydrocarbon refrigerant and has both of stability and wear resistance in high levels in the presence of the unsaturated fluorinated hydrocarbon refrigerant and to provide a working fluid composition for refrigerators.

SOLUTION: The refrigerator oil contains: a base oil containing an ether compound; amine salt of acid phosphate; an amine-based antioxidant; a metal inactivator; and an alicyclic epoxy compound, has the acid phosphate amine salt content of ≥400 mass ppm of the total mass of the refrigerator oil and is used together with the unsaturated fluorinated hydrocarbon refrigerant. The working fluid composition for refrigerators contains the refrigerator oil, which contains: the base oil containing the ether compound; the amine salt of acid phosphate; the amine-based antioxidant; the metal inactivator; and the alicyclic epoxy compound, and the unsaturated fluorinated hydrocarbon refrigerant and has the acid phosphate amine salt content of ≥400 mass ppm of the total mass of the refrigerator oil.

COPYRIGHT: (C)2011,JPO&INPIT