| 摘要 |
Disclosed is a lubricant for compression refrigerating machines characterized by containing a polyvinyl ether compound which contains an alkylene glycol unit or polyoxyalkylene glycol unit and a vinyl ether unit in a molecule, while having a molecular weight of 300-3,000, and an organic carboxylic acid ester of a polyhydric alcohol having two or more free hydroxyl groups. This lubricant for compression refrigerating machines exhibits good compatibility in a carbon dioxide atmosphere, while having high viscosity index, excellent wear resistance and excellent rust resistance. |
