| 摘要 |
PROBLEM TO BE SOLVED: To provide a hydraulic fluid composition for refrigerator in which both lubricity, and thermal and chemical stability can be achieved at a high level in a refrigeration system using an unsaturated fluorohydrocarbon refrigerant.SOLUTION: There is provided a refrigerator oil composition for unsaturated fluorohydrocarbon that includes: a lubricant base oil; a compound represented by following general formula (1); and a phosphorous compound. There is also provided a hydraulic fluid composition for refrigerator that includes: a lubricant base oil; a compound represented by the following general formula (1); a phosphorous compound; and an unsaturated fluorohydrocarbon refrigerant. In the formula, Rand Rmay be the same or different from each other, and denote each a hydrocarbon group, m, n, p and q may be the same or different from each other, and denote each an integer of 0-5 in which the sums of m+n and p+q are 0-5. However, at least either n or q is at least 1. In addition, t and u may be the same or different from each other, and denote each an integer of 0-10. |
