Patent Number: 8,491,811

Title: Lubricant for compression refrigerating machine and refrigerating apparatus using the same

Abstract: The present invention provides a lubricating oil for a compression type refrigerator including a polyvinyl ether-based compound containing an alkylene glycol or polyoxyalkylene glycol unit and a vinyl ether unit in a molecule and having a molecular weight in a range of 300 to 3,000, a metal deactivator, and at least one kind phosphorous compound selected from a phosphate and a phosphite. The lubricating oil for a compression type refrigerator of the present invention has high miscibility and high viscosity index, and is excellent in anti-seizure property and corrosion stability under carbon dioxide atmosphere.

Inventors: Kaneko; Masato (Chiba, JP), Ikeda; Harutomo (Chiba, JP)

Assignee: Idemitsu Kosan Co., Ltd.

International Classification: C09K 5/04 (20060101)

Expiration Date: 2021-07-23 0:00:00