The present invention proposes a lubricating oil for refrigerators comprising, as the base oil, a polyester-based derivative or a polyvinyl ether derivative and a polycarbonate-based oxygenated compound; a polyoxyalkylene glycol derivative; or a polyester-based derivative or a polyvinyl ether derivative and a polyoxyalkylene glycol derivative. The lubricating oil exhibits excellent miscibility with a refrigerant having one carbon atom and no chlorine atoms and, in particular, with difluoromethane and provides a hydraulic fluid composition exhibiting excellent antiwear, lubricity and stability.
本发明提出了一种冰箱润滑油,其基础油包括聚酯基衍
生物或聚
乙烯醚衍
生物和聚
碳酸酯基含氧化合物;聚氧烷基二醇衍
生物;或聚酯基衍
生物或聚
乙烯醚衍
生物和聚氧烷基二醇衍
生物。该润滑油与具有一个碳原子且不含
氯原子的制冷剂,特别是与
二氟甲烷具有极佳的混溶性,并提供一种具有极佳抗磨损性、润滑性和稳定性的液压油组合物。