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Lubricating oil composition for refrigerator

A technology of lubricating oil composition and refrigerators, which is applied in the direction of lubricating compositions, refrigerators, compressors, etc., can solve the problems of inability to use automobile air-conditioning systems, and achieve excellent compatibility, low global warming coefficient, and stability excellent effect

Inactive Publication Date: 2015-08-19
IDEMITSU KOSAN CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, there are still concerns about the impact of this HFC on global warming, and so-called natural refrigerants such as carbon dioxide have attracted attention as a more environmentally friendly substitute for refrigerants. However, this carbon dioxide requires high pressure, so it cannot be used in the present car air conditioning system

Method used

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  • Lubricating oil composition for refrigerator
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  • Lubricating oil composition for refrigerator

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～15 and comparative example 1～6

[0216] A refrigerating machine oil composition having the composition shown in Table 2 was prepared, and HFC1234yf (2,3,3,3-tetrafluoropropene) was used as a refrigerant, and the characteristics of the above composition were evaluated. The results are shown in Table 2.

[0217] [Table 2]

[0218] table 2-1

[0219]

[0220] [table 3]

[0221] Table 2-2

[0222]

[0223] [Table 4]

[0224] Table 2-3

[0225]

[0226] [table 5]

[0227] Table 2-4

[0228]

[0229] From Table 2 we can know the following.

[0230] The refrigerating machine oil composition of the present invention (Examples 1-15) has a double-layer separation temperature exceeding 40°C, and in the sealed tube test, the oil appearance and catalyst appearance are good, and the acid value is less than 0.01 mgKOH / g, which is very low.

[0231] In contrast, in Comparative Examples 1 to 6 in which polyvinyl ether compounds with a hydroxyl value exceeding 15 mgKOH / g were used as the base oil, although the double-layer separation tempera...

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Abstract

Provided is a lubricating oil composition for a refrigerator, the refrigerator using a refrigerant which has a low global warming potential and is applicable to, in particular, current car air conditioning systems or the like, that is, the refrigerant including at least one kind of fluorine-containing organic compounds selected from compounds represented by the following molecular formula (A) or including a combination of the fluorine-containing organic compound and a saturated fluorinated hydrocarbon compound, €ƒ€ƒ€ƒ€ƒ€ƒ€ƒ€ƒ€ƒC p O q F r R s €ƒ€ƒ€ƒ€ƒ€ƒ(A) where: R represents Cl, Br, I, or H; p represents an integer of 1 to 6, q represents an integer of 0 to 2, r represents an integer of 1 to 14, and s represents an integer of 0 to 13; and provided that, when q represents 0, p represents 2 to 6 and one or more carbon-carbon unsaturated bonds are included in molecules, in which the composition comprises a base oil including as a main component a polyvinyl ether-based compound having an alkylene glycol unit, or a polyoxyalkylene glycol unit and a vinyl ether unit in a molecule and having a hydroxyl value of 15 mgKOH / g or less.

Description

Technical field [0001] The present invention relates to a lubricating oil composition for refrigerators, and more specifically to a refrigeration system that uses a base oil containing a specific polyvinyl ether compound as a main component and has excellent stability and suppresses the generation of sludge in a sealed tube test Engine lubricating oil composition, the lubricating oil composition is used in refrigerators using specific refrigerants such as unsaturated fluorohydrocarbon compounds. This refrigerant has a low global warming coefficient and is especially applicable to current automobile air conditioners System etc. Background technique [0002] In general, a compression type refrigerator at least consists of a compressor, a condenser, an expansion mechanism (expansion valve, etc.), an evaporator, or a dryer, which has a mixed liquid of refrigerant and lubricating oil (refrigerator oil). The internal circulation structure of the closed system. In this compression typ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10M107/24C09K5/04F25B1/00C10N20/02C10N20/04C10N30/00C10N40/30
CPCC10N2230/12C10N2220/04C10N2220/021C10M2207/026C10N2230/04C10M107/34C10N2220/026C10N2230/10C09K2205/112C10N2220/022C10N2220/02C09K5/045C10N2220/301C10N2220/302C10M171/008C10M2223/041C10M107/24C10M2209/043C10N2240/30C10M2207/042C10M2229/02C10M107/20C09K2205/126C10N2020/01C10N2020/04C10N2020/02C10N2020/067C10N2020/077C10N2020/099C10N2020/101C10N2030/04C10N2030/10C10N2030/12C10N2040/30C10M2209/1033
Inventor 金子正人池田晴智佐藤德荣
Owner IDEMITSU KOSAN CO LTD
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