Refrigerating machine oil and working fluid composition for refrigerating machines

一种冷冻机油、组合物的技术，应用在润滑组合物、石油工业、化学仪器和方法等方向，能够解决冷冻机油易滞留、不良、无法获得制冷剂与冷冻机油相容性等问题
CN103097501AActive Publication Date: 2013-05-08JX NIPPON OIL & ENERGY CORP
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
JX NIPPON OIL & ENERGY CORP
Publication Date
2013-05-08

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Abstract

This refrigerating machine oil comprises esters of a polyhydric alcohol with fatty acids. In the fatty acids, the molar ratio of C4-6 fatty acids to branched C7-9 fatty acids is 15:85 to 90:10, and the C4-6 fatty acids contain 2-methylpropanoic acid, with the sum total of the C4-6 fatty acids and the branched C7-9 fatty acids accounting for at least 20 mol% of the whole of the fatty acids constituting the esters. This working fluid composition for refrigerating machines comprises the refrigerating machine oil and a difluoromethane refrigerant and / or an unsaturated fluorinated hydrocarbon refrigerant.
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Description

technical field

[0001] The present invention relates to a refrigerating machine oil and a working fluid composition for refrigerating machines, in particular, to a refrigerating machine oil useful when used together with difluoromethane refrigerant (HFC-32), unsaturated fluorinated hydrocarbons, and the like, and A working fluid composition for refrigerators using the refrigerator oil. Background technique

[0002] Due to the problem of ozone depletion in recent years, CFC (Chlorofluorocarbon, hydrochlorofluorocarbon) and HCFC (Hydrochlorofluorocarbon, hydrochlorofluorocarbon), which were previously used as refrigerants for refrigeration machines, have become restricted objects, and HFC (Fluorohydrocarbon, hydrofluorocarbon) is being used ) to replace them as refrigerants.

[0003] In the case of using CFC and HCFC as the refrigerant, hydrocarbon oils such as mineral oil and alkylbenzene can be used appropriately as the refrigerator oil. Due to unexpected conditions such a...

Claims

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