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Working fluid composition for refrigerator, refrigeration oil, and method for producing same

一种工作流体、冷冻机油的技术，应用在润滑组合物、化学仪器和方法、石油工业等方向，能够解决温室效应强等问题，达到吸附性高、减少填充量、电绝缘性及稳定性优异的效果

Active Publication Date: 2014-11-12
JX NIPPON OIL & ENERGY CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, although HFC does not destroy the ozone layer, it has a strong greenhouse effect, and is not necessarily an excellent refrigerant from the viewpoint of global warming, which has become a problem in recent years.

Method used

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  • Working fluid composition for refrigerator, refrigeration oil, and method for producing same
  • Working fluid composition for refrigerator, refrigeration oil, and method for producing same
  • Working fluid composition for refrigerator, refrigeration oil, and method for producing same

Examples

Experimental program
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Effect test

no. 1 Embodiment approach

[0041] [First embodiment: Refrigeration machine oil and its manufacturing method]

[0042] The refrigerating machine oil according to the first embodiment of the present invention has a kinematic viscosity at 100° C. of 2 to 50 mm 2 / s, used together with hydrocarbon refrigerants with 2 to 4 carbons, which contain ester intermediates obtained by reacting neopentyl polyols with dibasic acids and further use monohydric alcohols with 1 to 20 carbons or 2 to 20 carbons The complex esters obtained by esterification of fatty acids with an acid value of 0.5 mg KOH / g or less are used as base oils. In addition, the refrigerating machine oil of this embodiment is used together with a hydrocarbon refrigerant containing 2 to 4 carbon atoms, which contains a neopentyl polyol, a dibasic acid, and a monohydric alcohol selected from 1 to 20 carbon atoms and Consisting of at least one type of fatty acid with 2 to 20 carbon atoms, an acid value of 0.5 mg KOH / g or less, and a kinematic viscosity...

no. 2 Embodiment approach

[0075] [Second Embodiment: Working Fluid Composition for Refrigerators]

[0076] The working fluid composition for refrigerators according to the second embodiment of the present invention has a kinematic viscosity at 100° C. of 2 to 50 mm 2 / s refrigerating machine oil and hydrocarbon refrigerants with 2 to 4 carbon atoms, the refrigerating machine oil contains ester intermediates obtained by reacting neopentyl polyols with dibasic acids and further utilizes monohydric alcohols selected from 1 to 20 carbon atoms and A complex ester obtained by esterifying at least one of fatty acids (monovalent chain carboxylic acids) having 2 to 20 carbon atoms and having an acid value of 0.5 mg KOH / g or less is used as a base oil. In addition, another aspect of the working fluid composition for refrigerating machines of the present embodiment is a working fluid composition for refrigerating machines, which contains a refrigerating machine oil and a hydrocarbon refrigerant having 2 to 4 carb...

Embodiment 1

[0081] [Example 1: Manufacture of complex ester A]

[0082] 104 g (1.0 mol) of neopentyl glycol (NPG) was reacted with 219 g (1.5 mol) of adipic acid (AA) at 220° C. for 3 hours to obtain an ester intermediate. 156 g (1.2 mol) of 2-ethylhexanol was added to this ester intermediate, and it was made to react at 220 degreeC for 2 hours, and the carboxyl group which remained in the ester intermediate was esterified. After the reaction finishes, remove the remaining 2-ethylhexanol in the reaction mixture, and then utilize adsorption treatment (clay treatment) to remove trace impurities to obtain the target complex ester (neopentyl glycol, adipic acid and 2-ethylhexyl complex esters of alcohols, hereinafter referred to as "complex esters A").

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Abstract

This working fluid composition for a refrigerator comprises: a refrigeration oil having a kinematic viscosity at 100°C of 2-50 mm2 / s and including, as a base oil, a complex ester having an acid value of 0.5 mgKOH / g or less and obtained by further esterifying, with at least one type of compound selected from C1-20 monovalent alcohols and C2-20 fatty acids, an ester intermediate obtained by reacting a neopentylpolyol and a dibasic acid; and a C2-4 hydrocarbon refrigerant.

Description

technical field [0001] The present invention relates to a working fluid composition for refrigerators using hydrocarbons such as ethane, propane, n-butane, and isobutane with extremely low global warming potential as refrigerants, and to refrigerator oils used together with the above-mentioned hydrocarbon refrigerants (lubricating oil for refrigerators) and a manufacturing method thereof. Background technique [0002] Conventionally, chlorofluorocarbons containing fluorine and chlorine as constituent elements have been used as refrigerants in refrigerators, air conditioners, refrigerators, and the like. Examples of such Freons include chlorofluorocarbons (CFCs) such as R-11 (trichloromonofluoromethane) and R-12 (dichlorodifluoromethane), and hydrochlorofluorocarbons (CFCs) such as R-22 (monochlorodifluoromethane). Hydrocarbons (HCFC), etc. [0003] However, due to the recent ozone depletion problem, its production and use are restricted internationally. At present, it is g...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M105/44C09K5/04C10M129/10C10M129/18C10M133/12C10M133/22C10M137/04C10N20/00C10N20/02C10N30/00C10N30/06C10N40/30
CPCC10M2215/064C10N2230/10C10M2207/301C10M2209/1055C10M2207/283C10M2203/1006C10N2230/06C10M2215/086C10N2240/30C10M2207/026C10M2223/041C09K5/042C10M2207/042C10M171/008C10N2220/303C10M2207/2835C10N2020/011C10N2020/103C10N2030/02C10N2030/10C10N2030/08C10N2030/70C10N2030/06C10N2040/30C10M2209/108C10N2020/04C09K2205/11C09K2205/12
Inventor 斋藤正典大城户武泽田健阿出川邦子
Owner JX NIPPON OIL & ENERGY CORP
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