Greenblum & Bernstein, P.L.C.
Refrigerating machine oil and working fluid composition for refrigerating machine
The present invention provides a refrigerating machine oil comprising: a base oil; a sulfide compound; and a gallate, wherein a content of the sulfide compound is 0.01 to 2.0% by mass and a content of the gallate is 10 to 500 ppm by mass based on a total amount of the refrigerating machine oil, and the refrigerating machine oil having a kinematic viscosity at 40° C. of 3 to 500 mm2/s.
JX NIPPON OIL & ENERGY CORPORATION
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Masanori Hiroko Kuniko
Saito Shimpo Adegawa