Lubricant composition for refrigerating machine employing hydrofluorocarbon as refrigerant
申请人:MITSUBISHI DENKI KABUSHIKI KAISHA
公开号:EP0931828A2
公开(公告)日:1999-07-28
A lubricant composition (for a refrigerating machine employing a HFC type refrigerant containing at least one selected from the group consisting of HFC-32, HFC-125, and HFC-134a) comprises a base oil of an ester formed from a dihydric or higher polyol as an alcohol and a monobasic aliphatic acid, alone or as a mixture thereof; and additives of, based on the total amount, (1) not less than 0.01 vol% and less than 1.0 vol% of a phosphate, (2) from 0.01 to 1.0 vol% of at least one of an alkylphosphorothionate and an arylphosphorothionate, and (3) from 0.01 to 1.0 vol% of an epoxy compound.
一种润滑剂组合物(用于使用 HFC 类型制冷剂的制冷机,该制冷剂至少包含一种选自 HFC-32、HFC-125 和 HFC-134a 组成的组的制冷剂)包括一种基础油,该基础油由作为醇的二水或二水以上多元醇和单碱性脂肪族酸单独或混合形成的酯组成;以及添加剂,以总量为基准,(1) 不小于 0.01 Vol%且小于 1.0 Vol%的磷酸盐,(2) 0.01 至 1.0 Vol%的烷基硫代磷酸酯和芳基磷酸盐中的至少一种。(2) 0.01 至 1.0 Vol%的烷基硫代磷酸酯和芳基硫代磷酸酯中的至少一种,以及 (3) 0.01 至 1.0 Vol%的环氧化合物。