| 摘要 |
<P>PROBLEM TO BE SOLVED: To obtain a lubricating oil for a refrigerant compression type refrigerating cycle apparatus, which has proper compatibility with and solubility in a 2-4C hydrocarbon refrigerant having no halogen atom, keeps viscosity not to impair lubricating properties, reduces the amount of the refrigerant filled and has excellent lubricating properties, stability, etc., and a working fluid. <P>SOLUTION: In the lubricating oil for refrigerant compression type refrigerating cycle apparatus with which the 2-4C hydrocarbon refrigerant containing no halogen atom is used, the lubricating oil comprises an ether compound represented by general formula R<SB>1</SB>-A-OR<SB>2</SB>(R<SB>1</SB>and R<SB>2</SB>are each a 1-4C alkyl group; A is a polymerization chain consisting of m oxyethylene groups and n oxypropylene groups; m is an integer of 0-50; n is an integer of 2-50; m/n is ≤1) as a main component and has 10-100 mm<SP>2</SP>/s viscosity at 40°C. The working fluid for the refrigerant compression type refrigerating cycle apparatus comprises the 2-4C hydrocarbon refrigerant containing no halogen atom and the lubricating oil. <P>COPYRIGHT: (C)2004,JPO |
