Patent ID: 6013609
Filing Date: 2000-01-11
Classification: C10M,C10N

Abstract:
A refrigerator oil comprising a base oil composed of an oxygen-containing organic compound and a fluorinated silicone oil having a kinematic viscosity of 500 mm.sup.2 /sec or more at 25.degree. C., wherein the oxygen-containing organic compound is polyalkylene glycol, a polyester, a polyether ketone, a polyvinyl ether, or a carbonate derivative, wherein the fluorinated silicone oil is a compound having the structure represented by the general formula (I): ##STR17## wherein R.sup.1 to R.sup.6 represent each hydrogen atom or a hydrocarbon group, and may be the same with each other or different from each other; R.sup.7 and R.sup.8 represent each a hydrocarbon group or a fluorinated hydrocarbon group, at least one of R.sup.7 and R.sup.8 is a fluorinated hydrocarbon, and R.sup.7 and R.sup.8 in a plurality of repeating units may be the same with each other or different from each other; and n represents an integer which is selected in such a manner that the fluorinated silicone oil has a kinematic viscosity of 500 mm.sup.2 /sec or more at 25.degree. C., and wherein the content of the fluorinated silicone oil in the refrigerator oil is 1 to 6,000 ppm by weight.