FIELD: chemistry.
SUBSTANCE: invention relates to refrigerating oil, which contains an ester obtained via esterification of only a mixture of a polyatomic alcohol and a fatty acid containing at least one C4-C6 fatty acid and at least one branched C7-C9 fatty acid, where the molar ratio of the at least one C4-C6 fatty acid to the at least one branched C7-C9 fatty acid in the mixture of fatty acids is between 15:85 and 90:10, the at least one C4-C6 fatty acid includes 2-methylpropanoic acid, and the total amount of the at least one C4-C6 fatty acid and the branched C7-C9 fatty acid in the mixture of fatty acids is at least 20 mol %. The present invention also relates to refrigerant compositions (versions).
EFFECT: obtaining refrigerating oil, which enables to achieve high levels of compatibility of the refrigerant, lubricating capacity and low-temperature fluidity.
9 cl, 36 ex, 10 tbl
