| 摘要 |
<p>Disclosed is a refrigerator oil composition having an excellent lubricating property, while specifically improving the lubricity between aluminium materials and steel materials, and is suitable as a lubricating oil in refrigerators using hydrogen-containing Flon refrigerants, such as 1,1,1,2-tetrafluoroethane, that do not cause environmental pollution. Disclosed is a refrigerator oil composition comprising at least one base oil selected from mineral oils and synthetic oils, and at least one polyoxyethylene-type nonionic surfactant. The nonionic surfactant for use preferably has a number of mols of oxyethylene of from 1 to 40 or has a HLB value of from 2 to 30. The nonionic surfactant for use may include, for example, polyoxyethylene alkyl ethers, polyoxyethylene alkenyl ethers, polyoxyethylene alkylaryl ethers, polyoxyethylene fatty acid esters, polyoxyethylene sorbitan fatty acid esters, and polyoxyethylene sorbitol fatty acid esters.</p> |
