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Refrigeration oil and working fluid composition for refrigeration oil

A technology of refrigerating machine oil and refrigerant, applied in lubricating compositions, petroleum industry, chemical instruments and methods, etc., which can solve the problems of high global warming coefficient and achieve excellent adaptability

Active Publication Date: 2017-08-01
JXTJ NIPPON OIL & ENERGY CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, among HFC refrigerants, HFC-134a, which is standardly used as a refrigerant for automobile air conditioners, has a zero ozone destruction coefficient (ODP) but a high global warming coefficient (GWP), so it is restricted in Europe. object

Method used

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  • Refrigeration oil and working fluid composition for refrigeration oil
  • Refrigeration oil and working fluid composition for refrigeration oil
  • Refrigeration oil and working fluid composition for refrigeration oil

Examples

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Embodiment

[0063] Hereinafter, although an Example demonstrates this invention more concretely, this invention is not limited to a following Example.

[0064] As base oils, polyol esters of fatty acids and polyhydric alcohols having the compositions shown in Table 1 were prepared. The abbreviations in the table represent the following compounds.

[0065] iC4: 2-methylpropionic acid

[0066] nC5: n-valeric acid

[0067] iC8: 2-ethylhexanoic acid

[0068] iC9: 3,5,5-trimethylhexanoic acid

[0069] PET: pentaerythritol

[0070] [Table 1]

[0071]

[0072] Using the base oil and the additives shown below, test oils having the compositions shown in Tables 2 and 3 were prepared.

[0073] Additive 1: 2,6-di-tert-butyl-p-cresol

[0074] Additive 2: Dioctyldiphenylamine

[0075] Additive 3: Tricresyl Phosphate

[0076] Additive 4: Glycidyl Neodecanoate

[0077] Additive 5: 2-Ethylhexyl glycidyl ether

[0078] [Table 2]

[0079]

[0080] [table 3]

[0081]

[0082] The abrasi...

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Abstract

Provided is a refrigeration oil to be used with a trifluoroethylene refrigerant, the refrigeration oil comprising: a base oil that includes an ester of a fatty acid in which the proportion of a branched chain fatty acid having 4 to 9 carbon atoms is 20 to 100 mol% and a polyhydric alcohol; and 0.2 to 0.5 mass%, based on the total amount of the refrigeration oil, of a phenolic antioxidant.

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 depletion of the ozone layer in recent years, CFC (hydrochlorofluorocarbons) and HCFCs (hydrochlorofluorocarbons), which have been used as refrigerants for refrigeration equipment, have been restricted, and HFCs (hydrofluorocarbons) are being used instead of them. Refrigerant. However, among HFC refrigerants, HFC-134a, which is standardly used as a refrigerant for automobile air conditioners, has a zero ozone destruction coefficient (ODP) but a high global warming coefficient (GWP), so it is restricted in Europe. object. [0003] Against such a background, development of a refrigerant having a low impact on the ozone layer and having a low GWP is urgently required. For example, Patent Document 1 discloses a trifluoroethylene (HFO-1123) refrigerant as a refrigerant having little influence on t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M169/04C09K5/04C10M105/38C10M129/10C10N30/00C10N40/30
CPCC09K2205/22C10M2207/026C10M2207/042C10M2215/066C10M2223/041C09K5/045C09K2205/126C09K2205/24C10M171/008C10M2207/2835C10N2020/071C10N2020/101C10N2030/10C10N2030/06C10N2040/30C10M105/38C10M129/10C10M169/04C10M2207/023
Inventor 高桥仁高桥勉今野聪一郎
Owner JXTJ NIPPON OIL & ENERGY CORP
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