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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

Active Publication Date: 2013-05-08
JX NIPPON OIL & ENERGY CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, if the refrigerating machine oil and the difluoromethane refrigerant conventionally used as HFC refrigerants are used together, sufficient compatibility between the refrigerant and the refrigerating machine oil cannot be obtained, and the refrigerating machine oil discharged from the refrigerant compressor becomes easy to discharge. As a result, the amount of refrigerating machine oil in the refrigerant compressor decreases, causing poor lubrication, or clogging expansion mechanisms such as capillary tubes.

Method used

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  • Refrigerating machine oil and working fluid composition for refrigerating machines
  • Refrigerating machine oil and working fluid composition for refrigerating machines
  • Refrigerating machine oil and working fluid composition for refrigerating machines

Examples

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Embodiment 1～36 and comparative example 1～15

[0113] In Examples 1 to 36 and Comparative Examples 1 to 15, base oils 1 to 36 shown below and additives 1 to 5 were blended so as to form the composition ratios shown in Tables 1 to 10, respectively, to prepare sample oils . The properties of each sample oil obtained are shown in Tables 1-10.

[0114] (base oil)

[0115] Base oil 1: Tetraester of pentaerythritol and fatty acid mixture (mixture of 30 mol% 2-methylpropionic acid and 70 mol% 3,5,5-trimethylhexanoic acid)

[0116] Base oil 2: Tetraester of pentaerythritol and fatty acid mixture (mixture of 35 mol% 2-methylpropionic acid and 65 mol% 3,5,5-trimethylhexanoic acid)

[0117] Base oil 3: Tetraester of pentaerythritol and fatty acid mixture (2-methylpropionic acid 50 mol%, 3,5,5-trimethylhexanoic acid 50 mol% mixture)

[0118] Base oil 4: Tetraester of pentaerythritol and fatty acid mixture (mixture of 60 mol% 2-methylpropionic acid and 40 mol% 3,5,5-trimethylhexanoic acid)

[0119] Base oil 5: Tetraester of pentaer...

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PUM

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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.

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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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M105/38C09K5/04C10N20/02C10N30/00C10N30/06C10N30/08C10N40/30
CPCC10M2223/041C10N2220/302C10M2207/281C10M2223/047C09K5/045C10N2220/303C09K2205/24C10M1/00C10M2207/042C10M2207/2835C10M2207/026C10N2230/02C10N2240/30C10N2230/06C09K2205/22C10N2220/306C10M171/008C09K2205/126C10N2020/103C10N2020/106C10N2020/101C10N2030/02C10N2030/06C10N2040/30C10N2020/071C10N2020/02C09K5/04C10M103/02C10M103/06C10M105/00C10M105/04C10M105/12C10M105/18C10M105/20C10M105/24C10M105/26C10M105/38
Inventor 泷川克也斋藤正典大城戸武高桥邦子
Owner JX NIPPON OIL & ENERGY CORP
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