Lubricating oil composition for refrigerating machine

Abstract

A lubricating oil composition for refrigerators which comprises base oil component 1 having a kinematic viscosity of 3 mm2/s or smaller at 100° C. and a viscosity index smaller than 250 and base oil component 2 having a kinematic viscosity of 25 mm2/s or greater at 100° C. and a viscosity index smaller than 250 and has a viscosity index of 250 or greater. In combination with the above lubricating oil composition, a fluorocarbon-based refrigerant or a natural substance-based refrigerant can be used as the refrigerant for refrigerators. The kinematic viscosity of the lubricating oil composition is kept at a suitable value at high temperatures and is suppressed to a small value at low temperatures, i.e., the viscosity index can be kept great.

Dependencies are inferred from the claim text.