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Refrigerator lubricating oil and mixed composition for refrigerator

A freezer and lubricating oil technology, which is applied in the field of freezer lubricating oil and a mixed composition for freezer, can solve the problem of high global warming potential

Inactive Publication Date: 2017-11-28
IDEMITSU KOSAN CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, as a refrigerant for automotive air conditioners, it is currently difficult to use carbon dioxide, which requires high pressure, as a main component. In addition, saturated HFCs also have a problem of high global warming potential.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1~10

[0149] Embodiment 1~10, comparative example 1~3

[0150] Refrigerator lubricating oils shown in Table 1 were prepared, R1234yf was used as a refrigerant, a mixed composition for refrigerators containing the refrigerator lubricating oil and refrigerant was prepared, and a rubber adaptability test was performed. In addition, the ester and sulfur-containing compound used in each Example and a comparative example are as follows. In addition, the physical properties of the following esters 1-4 are shown in Table 2.

[0151] Ester 1: Complete ester of pentaerythritol with a mixture of 2-ethylhexanoic acid and 3,5,5-trimethylhexanoic acid (mixing molar ratio 2 / 8)

[0152] Ester 2: Complete ester of pentaerythritol with 3,5,5-trimethylhexanoic acid

[0153] Ester 3: Complete ester of dipentaerythritol with 3,5,5-trimethylhexanoic acid

[0154] Ester 4: Complete ester of pentaerythritol with a mixture of 2-butyloctanoic acid and 3,5,5-trimethylhexanoic acid (mixing molar ratio 3 / 7) ...

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Abstract

The refrigerator lubricating oil includes: a base oil, the main component of which is a polyol ester (A) of C3-C18 fatty acids (a1) and of a polyol (a2) that is selected from among neopentyl glycol, trimethylolethane, trimethylolpropane, trimethylolbutane, pentaerythritol, and dipentaerythritol; and a disulfide and / or trisulfide compound (B). The blended amount of the disulfide and / or trisulfide compound (B)is, in terms of sulfur, 30-10000 mass ppm with respect to the total amount of the refrigerator lubricating oil.

Description

technical field [0001] The present invention relates to refrigerating machine lubricating oil mixed with various refrigerants, and the mixed composition for refrigerating machine of the refrigerating machine lubricating oil and refrigerant, and particularly relates to the refrigerating machine used in open type car air conditioners, electric car air conditioners and other car air conditioners. A refrigerator lubricating oil and a mixed composition for a refrigerator. Background technique [0002] Generally, a refrigerator is composed of at least a compressor, a condenser, an expansion mechanism (expansion valve, etc.), an evaporator, or a further dryer, and a mixture of refrigerant and refrigerator lubricating oil circulates in the closed system. Chlorine-containing compounds such as chlorofluorocarbons are widely used as refrigerants for refrigerators, but in recent years they have been replaced by chlorine-free compounds such as hydrofluorocarbons (HFCs) and natural refrig...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M169/04C09K5/04C10M105/38C10M135/20C10N30/00C10N40/30F25B1/00
CPCC09K5/04C10M135/20F25B1/00C10M2219/022C10M169/04C09K5/045C10M135/22C10M135/28C10M2207/2835C10M2219/082C10M2219/086C10N2020/106C10N2020/101C10N2030/36C10N2040/30C10N2060/10C10M105/38F25B31/002C09K2205/122C09K2205/126C09K2205/22F25B2500/221
Inventor 金子正人星田隆宏
Owner IDEMITSU KOSAN CO LTD
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