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Refrigerator oil and working fluid composition for refrigerating machine

一种工作流体、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，能够解决全球变暖系数高等问题

Inactive Publication Date: 2010-09-08
NIPPON OIL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Among the HFC refrigerants, HFC-134a, which is typically used as a refrigerant for automobile air conditioners, has a zero ozone destruction factor (ODP) but a high global warming factor (GWP), so it is subject to regulation in Europe

Method used

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  • Refrigerator oil and working fluid composition for refrigerating machine

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～3、 comparative example 1～3

[0087] In Examples 1 to 3 and Comparative Examples 1 to 3, refrigerating machine oils were prepared using base oils 1 to 5 shown below, respectively. Table 1 shows various properties of the obtained refrigerating machine oil.

[0088] (base oil)

[0089] Base Oil 1: Polypropylene Glycol Monomethyl Ether

[0090] Base Oil 2: Polyethylene Propylene Glycol Monomethyl Ether

[0091] Base Oil 3: Polypropylene Glycol Dimethyl Ether

[0092] Base Oil 4: Polyethylene Propylene Glycol Dimethyl Ether

[0093] Base oil 5: Esters of n-heptanoic acid and pentaerythritol

[0094] Base oil 6: naphthenic mineral oil

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Abstract

Disclosed is a refrigerator oil characterized by containing an ester of a polyhydric alcohol and a fatty acid containing 50-100% by mole of a fatty acid having 5-9 carbon atoms, not less than 30% by mole of a branched fatty acid having 5-9 carbon atoms, and not more than 40% by mole of a straight chain fatty acid having 5 or less carbon atoms. This refrigerator oil is also characterized by being used together with a fluoropropene refrigerant and / or a trifluoroiodomethane refrigerant. Also disclosed is a working fluid composition for refrigerating machines which is characterized by containing the above-described ester, and a fluoropropene refrigerant and / or a trifluoroiodomethane refrigerant.

Description

technical field [0001] The present invention relates to refrigerating machine oil and a working fluid composition for refrigerating machines. Background technique [0002] Due to the problem of depletion of the ozone layer in recent years, CFC (chlorofluorocarbon) and HCFC (hydrochlorofluorocarbon), which have been used as refrigerants for existing refrigeration equipment, have become targets of regulation, and HFC (hydrofluorocarbon, hydrofluorocarbon) is becoming Instead they are used as refrigerants. [0003] When CFC and HCFC are used as refrigerants, hydrocarbon oils such as mineral oil and alkylbenzene are suitable as refrigerator oils. When the refrigerant changes, the refrigerator oil used under coexistence shows compatibility with the refrigerant, lubricity, Refrigeration oils need to be developed for each refrigerant due to unpredictable behaviors such as solution viscosity, thermal and chemical stability with refrigerants. Therefore, as refrigerating machine oil...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M107/34C09K5/04C10M105/18C10N30/00C10N40/30
CPCC10M2209/1045C10N2220/302C09K2205/134C09K2205/106C10N2230/10C10N2240/30C09K5/045C09K2205/12C10M107/34C10M171/008C09K2205/126C10M2209/1055C09K2205/122C09K2205/11C10N2020/101C10N2030/10C10N2040/30C10M2209/1085
Inventor 下村裕司泷川克也
Owner NIPPON OIL CO LTD