| 摘要 |
PROBLEM TO BE SOLVED: To provide a refrigerator lubricating oil for suppressing rubber swelling without impairing compatibility of a refrigerator lubricating oil with an unsaturated fluorohydrocarbon refrigerant and to provide a mixed composition for a refrigerator.SOLUTION: There is provided a mixed composition for a refrigerator which comprises: a refrigerant containing, as a main component, at least one unsaturated fluorohydrocarbon compound selected from compounds represented by the following molecular formula (1): CFH(1) [wherein, p is 2 to 6, r is 1 to 11, s is an integer of 1 to 11 and one or more carbon-carbon unsaturated bonds are contained in the molecule]; and a refrigerator lubricating oil containing, as the main components, a polyol ester (A) of a fatty acid (a1) having 9 to 16 carbon atoms in which the content of a fatty acid having 9 carbon atoms is 50 mol% or more based on the total amount of the fatty acid (a1) and a polyol (a2) which is pentaerythritol and/or dipentaerythritol.SELECTED DRAWING: None |
