| 摘要 |
FIELD: chemistry.SUBSTANCE: refrigerator oil contains polyalkylene glycol of formula R-(OR)-OR(1), where Rand Rdenote hydrogen, C1-C5 alkyl or C2-C5 acyl, Rdenotes C2-C4 alkylene, and content of C2 alkylene groups in Ris not more than 30 mol %, together with a fluoropropene coolant. The fluoropropene coolant is selected from fluoropropene and a mixture of fluoropropene with at least one coolant selected from hydrofluorocarbons, fluorinated ethers and natural coolants. The composition of the working medium for a cooling apparatus contains said polyalkylene glycol of formula (1) and said fluoropropene coolant.EFFECT: refrigerator oil has high compatibility with coolants in the presence of fluoropropene coolants.5 cl, 1 tbl, 3 ex |
