Fluoroethylene composition

Abstract

This invention provides a composition containing fluorinated ethylene having one or more fluorine atoms, wherein the fluorinated ethylene exhibits excellent stability. The fluorinated ethylene composition of this invention contains fluorinated ethylene having one or more fluorine atoms, water, and oxygen, wherein the fluorinated ethylene is 1,2-difluoroethylene; the water content is 100 ppm by mass or less based on the mass of the fluorinated ethylene; and the oxygen content is 0.35 mol% or less based on the mass of the fluorinated ethylene. The fluorinated ethylene in the fluorinated ethylene composition of this invention exhibits excellent stability.

Description

[0001] This case is a divisional application of application number 202080044172.2 (PCT / JP2020 / 024261) filed on June 19, 2020, entitled "Fluoroethylene Composition". Technical Field

[0002] This invention relates to fluorinated ethylene compositions. Background Technology

[0003] Fluorinated vinylides having more than one fluorine molecule can be used in a variety of applications, among which 1,2-difluoroethylene (HFO-1132) is known to be used as a thermal cycling working medium (e.g., see Patent Document 1, etc.).

[0004] Existing technical documents Patent documents Patent Document 1: International Publication No. 2012 / 157765 Summary of the Invention

[0005] The problem that the invention aims to solve The purpose of this invention is to provide a composition containing fluorinated ethylene having one or more fluorine atoms, wherein the fluorinated ethylene has excellent stability.

[0006] Methods for solving problems The present invention comprises the structure described in the following items.

[0007] Item 1 1. A fluorinated vinyl composition comprising fluorinated vinyl having one or more fluorine atoms, water, and oxygen. Based on the mass of the aforementioned fluorinated ethylene, the content of the aforementioned water is below 100 ppm by mass. Based on the above-mentioned fluorinated ethylene, the oxygen content is less than 0.35 mol%.

[0008] Item 2 The fluorinated ethylene composition as described in item 1, wherein the fluorinated ethylene is selected from one or more of 1,2-difluoroethylene and trifluoroethylene.

[0009] Item 3 The fluorinated ethylene composition as described in item 2, wherein the fluorinated ethylene is 1,2-difluoroethylene.

[0010] Item 4 The fluorinated ethylene composition as described in item 2 or 3, wherein the 1,2-difluoroethylene is trans-1,2-difluoroethylene (HFO-1132(E)) and / or cis-1,2-difluoroethylene (HFO-1132(Z)).

[0011] Item 5 The fluorinated ethylene composition as described in any one of items 1 to 4 further contains at least one selected from polyalkylene glycols, polyol esters, and polyethylene ethers.

[0012] Item 6 The fluoroethylene composition as described in any one of items 1 to 5 is used as a heat medium, refrigerant, foaming agent, solvent, cleaning agent, propellant, or fire extinguishing agent.

[0013] Item 6-1 The heat medium, refrigerant, foaming agent, solvent, cleaning agent, propellant or extinguishing agent containing any of the fluorinated ethylene compositions described in items 1 to 5.

[0014] Item 6-2 The use of any one of the fluoroethylene compositions described in items 1 to 5 in a heat medium, refrigerant, foaming agent, solvent, cleaning agent, propellant or extinguishing agent.

[0015] Item 7 A method for stabilizing a fluorinated ethylene composition, wherein the fluorinated ethylene composition contains fluorinated ethylene having one or more fluorine atoms, water, and oxygen, wherein the oxygen content is 0.35 mol% or less based on the fluorinated ethylene. The stabilization method described above includes a step of adjusting the content of the water to below 100 ppm by mass, based on the mass of the fluorinated ethylene described above.

[0016] The effects of the invention The fluorinated ethylene composition of the present invention exhibits excellent stability. Detailed Implementation

[0017] The inventors of this invention conducted repeated and in-depth research to improve the stability of fluorinated ethylene, and found that this objective could be achieved by coexisting with water. The embodiments included in this invention will be described in detail below. Furthermore, in this specification, expressions such as "containing" and "comprising" include the concepts of "containing," "comprising," "substantially constituted by," and "consisting solely of."

[0018] In this specification, the numerical range indicated by "~" represents the range encompassed by the minimum and maximum values ​​recorded before and after the "~". Within the segmented numerical ranges described in this specification, the upper or lower limit of one segment can be arbitrarily combined with the upper or lower limits of other segments. The upper or lower limit of the numerical ranges described in this specification can be replaced with the values ​​shown in the embodiments or values ​​unambiguously derived from the embodiments.

[0019] The fluorinated ethylene composition of the present invention contains fluorinated ethylene having one or more fluorine atoms, water, and oxygen. Based on the mass of the fluorinated ethylene, the water content is 100 ppm or less by mass, and the oxygen content is 0.35 mol% or less by mass of the fluorinated ethylene. Hereinafter, the fluorinated ethylene having one or more fluorine atoms in the fluorinated ethylene composition of the present invention will be abbreviated as "fluorinated ethylene A".

[0020] In fluorinated ethylene A, the number of fluorine atoms is preferably two or more, more preferably two or three, and particularly preferably two.

[0021] From the perspective of easily improving stability, fluorinated ethylene A is selected from one or more of 1,2-difluoroethylene and trifluoroethylene, more preferably 1,2-difluoroethylene.

[0022] Here, 1,2-difluoroethylene exists in two isomers (E and Z), specifically, trans-1,2-difluoroethylene (HFO-1132(E)) and cis-1,2-difluoroethylene (HFO-1132(Z)). In the fluorinated ethylene composition of the present invention, when fluorinated ethylene A is 1,2-difluoroethylene, it can be only one isomer or a mixture of two isomers. That is, in the fluorinated ethylene composition of the present invention, when fluorinated ethylene A is 1,2-difluoroethylene, 1,2-difluoroethylene can be trans-1,2-difluoroethylene (HFO-1132(E)) and / or cis-1,2-difluoroethylene (HFO-1132(Z)).

[0023] When fluoroethylene A is 1,2-difluoroethylene, 1,2-difluoroethylene is preferably E-form. Specifically, 1,2-difluoroethylene preferably contains 50% by mass or more of E-form, more preferably 55% by mass or more, even more preferably 60% by mass or more, and particularly preferably 70% by mass or more.

[0024] In this specification, the designation "1,2-difluoroethylene" or "HFO-1132" includes all cases of 1,2-difluoroethylene containing only the E-form, 1,2-difluoroethylene containing only the Z-form, and mixtures containing both the E-form and the Z-form. Furthermore, in this specification, as needed, 1,2-difluoroethylene containing only the E-form is designated as "1,2-difluoroethylene (E)" or "HFO-1132 (E)", 1,2-difluoroethylene containing only the Z-form is designated as "1,2-difluoroethylene (Z)" or "HFO-1132 (Z)", and mixtures containing both the E-form and the Z-form are designated as "1,2-difluoroethylene (E,Z)" or "HFO-1132 (E,Z)".

[0025] In the fluorinated ethylene composition of the present invention, the method for manufacturing fluorinated ethylene A is not particularly limited. For example, fluorinated ethylene A can be manufactured by known manufacturing methods. When fluorinated ethylene A is 1,2-difluoroethylene, 1,2-difluoroethylene can be manufactured by the dehydrofluorination reaction of 1,1,2-trifluoroethane, the hydrogenation reaction of 1,2-dichloro-1,2-difluoroethylene, the hydrogenation decomposition of 1,2-dichlorodifluoroethylene, or the dehydrochlorination reaction of 1-chloro-1,2-difluoroethane.

[0026] In the fluorinated ethylene composition of the present invention, the water content is 100 ppm by mass or less, based on the mass of fluorinated ethylene A. This improves the stability of fluorinated ethylene A. However, in the fluorinated ethylene composition of the present invention, when the water content exceeds 100 ppm by mass, the formation of solid substances due to side reactions and other factors actually impairs the stability of the fluorinated ethylene.

[0027] In the fluorinated ethylene composition, based on the mass of the aforementioned fluorinated ethylene A, the water content is preferably 0.1 ppm by mass or more, more preferably 1 ppm by mass or more, even more preferably 2 ppm by mass or more, even more preferably 3 ppm by mass or more, particularly preferably 4 ppm by mass or more, and most preferably 5 ppm by mass or more. Furthermore, in the fluorinated ethylene composition, a water content of 100 ppm by mass or less is sufficient to maintain stability; however, from the viewpoint of making the formation of aggregates, etc., less likely to occur (described later), based on the mass of the aforementioned fluorinated ethylene A, the water content is preferably 80 ppm by mass or less, more preferably 60 ppm by mass or less, even more preferably 50 ppm by mass or less, and particularly preferably 20 ppm by mass or less. Additionally, based on the mass of the aforementioned fluorinated ethylene A, the water content can also be 9 ppm by mass or less, or 5 ppm by mass or less.

[0028] In fluorinated ethylene compositions, the water content can be determined using a commercially available Karl Fischer moisture analyzer, typically with a detection limit of 0.1 ppm by mass. Furthermore, the total amount of fluorinated ethylene A in the fluorinated ethylene composition can also be determined using gas chromatography. Therefore, the water content based on the mass of fluorinated ethylene A can be determined by combining gas chromatography and a moisture analyzer.

[0029] In fluorinated vinyl compositions, the presence of fluorinated vinyl A and water enhances the stability of fluorinated vinyl A. Furthermore, even after long-term storage, it is less prone to forming solid components such as agglomerates. Without limiting the interpretation, the following mechanism can be considered as a reason for the increased stability of fluorinated vinyl A through water. First, the water present in the fluorinated vinyl composition reacts with or stabilizes the fluorinated methyl or fluorinated ethyl radicals generated during the initial decomposition of fluorinated vinyl A. Consequently, these radicals generated during the initial decomposition are less likely to react with fluorinated vinyl A, or the reaction rate is reduced. As a result, chain reactions and oxidation are less likely to occur, thus increasing the stability of fluorinated vinyl A. On the other hand, when the water content is above a certain level (exceeding 100 ppm by mass), the aforementioned fluorinated methyl or fluorinated ethyl radicals and fluorinated vinyl A dissolve in water, resulting in a locally higher concentration, thus making water a reaction field. As a result, the polymerization reaction of fluorinated ethylene A occurs. Therefore, fluorinated ethylene A is easily consumed, which is the reason for the decrease in the stability of fluorinated ethylene A. In addition, aggregates are also produced due to the polymerization reaction.

[0030] The fluorinated ethylene composition also contains oxygen. Based on the molar number of fluorinated ethylene A, the oxygen content (content percentage) is less than 0.35 mol%. Furthermore, the oxygen content in the fluorinated ethylene composition refers to the oxygen content present in the liquid phase when the fluorinated ethylene composition is in a closed container.

[0031] In the fluorinated ethylene composition, based on the above-mentioned molar number of fluorinated ethylene A, the oxygen content is more preferably 0.12 mol% or less. Furthermore, in the fluorinated ethylene composition, based on the above-mentioned molar number of fluorinated ethylene A, the oxygen content is preferably 0.0001 mol% or more, more preferably 0.001 mol% or more. When the oxygen content is within this range, the stability of the fluorinated ethylene in the composition is improved. From this viewpoint, a lower oxygen content in the composition is more preferable; however, since the composition contains water as described above, even with oxygen levels within the above-mentioned range, the stability of the olefins can be maintained due to the effect of the water. That is, generally speaking, the presence of oxygen makes fluorinated ethylene A unstable; however, in the fluorinated ethylene composition of the present invention, the adverse effects of oxygen on fluorinated ethylene A are suppressed by water. Therefore, the fluorinated ethylene composition of the present invention exhibits excellent stability of fluorinated ethylene A regardless of whether it contains oxygen.

[0032] In fluorinated vinyl compositions, the oxygen content can be determined by measuring the oxygen content in the gas phase using a commercially available gas chromatograph. The oxygen content is then quantified by calculating the oxygen content in the liquid phase from this measurement. Typically, the detection limit is below 0.0001 mol%.

[0033] Fluorinated ethylene compositions may contain compounds other than fluorinated ethylene A, for example, they may contain impurities introduced during the manufacture of fluorinated ethylene A. As such impurities, for example, when fluorinated ethylene A is 1,2-difluoroethylene, the following can be listed: hydrogen fluoride, fluorinated ethylene, trifluoroethylene, 1,1,1-trifluoroethane, propylene, acetylene, difluoromethane, trifluoromethane, fluoromethane, 1,1,2-trifluoroethylene (HFO-1123), 1,1-difluoroethane (HFC-152a), fluoroethane (HFC-161), 1,1,2-trifluoroethane (HFC-143), 2-chloro-1,1,1-trifluoroethane (HCFC-133b), 1-chloro-1,1,2-trifluoroethane (HCFC-133), 1,1-dichloro-2,2,2-trifluoroethane (HCFC-123), 1-chloro-1,2-difluoroethane (HCFC-142a), 1,2-difluoroethane (HFC-152), and dichlorofluoromethane (HCFC-152). -22), 1,1,1,2-tetrafluoroethane (HFC-134a), 1,1,2,2-tetrafluoroethane (HFC-134), pentafluoroethane (HFC-125), 2,3,3,3-tetrafluoropropylene (HFO-1234yf), 1,2,3,3,3-pentafluoropropylene (HFO-1225ye), 1,3,3,3-tetrafluoropropylene (HFO-1234ze), 1,3,3,3-tetrafluoropropylene (HFO-1234ze), fluoroethylene (HFO-1141), 3,3,3-trifluoropropylene (HFO-1243zf), 1,1-difluoroethylene (HFO-1132a), 1-chloro-2,2-difluoroethylene (HCFO-1122), 1-chloro-1,2-difluoroethylene (HCFO-1122a), and at least one of ethylene, etc.

[0034] When the fluorinated vinyl composition contains the aforementioned impurities, their content is not particularly limited. For example, based on the mass of fluorinated vinyl A, it is preferable to contain 0.1 ppm to 10,000 ppm by mass of the aforementioned impurities. Within this range, there is less concern that the stabilizing effect of fluorinated vinyl A will be suppressed.

[0035] In addition to fluorinated ethylene A and the aforementioned impurities, the fluorinated ethylene composition may contain other fluorinated compounds, as long as they do not inhibit the effect of the fluorinated ethylene composition of the present invention. Examples of fluorinated compounds include, for example, well-known refrigerants, and halogenated olefin compounds having 2 to 4 carbon atoms, preferably 2 to 3 carbon atoms, and more preferably 3 carbon atoms.

[0036] When the fluorinated ethylene composition of the present invention is used as a refrigerant or heat medium, the fluorinated ethylene composition may contain a lubricating oil. There are no particular limitations on the lubricating oil; for example, well-known lubricating oils used in refrigerants and the like can be widely used.

[0037] As specific lubricants, one or more selected from polyalkylene glycols, polyol esters, and polyvinyl ethers can be listed. For example, "SUNICE P56" manufactured by SUN Oil Co., Ltd. of Japan can be listed as a polyalkylene glycol (PAG). Similarly, for polyol esters (POEs), "Ze-GLES RB32" manufactured by JX Nippon Minerals & Oils Co., Ltd. can be listed as an example.

[0038] The lubricating oil may contain 1 to 50% by mass, preferably 10 to 40% by mass, relative to the total amount of fluorinated ethylene A, water and the aforementioned impurities contained in the composition, depending on the model of the refrigeration unit's oil tank; therefore, the range is not particularly limited.

[0039] The fluorinated ethylene composition of the present invention may also contain other additives (other than the aforementioned lubricants) or unavoidable elements or compounds (hereinafter referred to as "other components"). When the fluorinated ethylene composition contains other components, the content of the other components relative to the mass of fluorinated ethylene A is 5% by mass or less, preferably 1% by mass or less, more preferably 0.1% by mass or less, and particularly preferably 0.05% by mass or less. In addition, the content ratio of fluorinated ethylene A relative to the mass of all fluorinated compounds (compounds having fluorine groups) contained in the fluorinated ethylene composition can be 50% by mass or more, preferably 60% by mass or more, more preferably 70% by mass or more, even more preferably 80% by mass or more, and particularly preferably 90% by mass or more. The content ratio of fluorinated ethylene A relative to the mass of the total fluorinated compounds contained in the fluorinated ethylene composition can be 99% by mass or more.

[0040] The fluorinated ethylene compositions of the present invention can be used in a variety of applications and are suitable as heat transfer media, refrigerants, foaming agents, solvents, cleaning agents, propellants, fire extinguishing agents, etc. Heat transfer media, refrigerants, foaming agents, solvents, cleaning agents, propellants, and fire extinguishing agents containing the fluorinated ethylene compositions of the present invention can maintain their quality over long periods. Heat transfer media, refrigerants, foaming agents, solvents, cleaning agents, propellants, and fire extinguishing agents, except for containing the fluorinated ethylene compositions of the present invention, can be formulated with the same structure as those known.

[0041] The fluorinated ethylene composition of the present invention is also applicable to various heat cycle systems. Examples of heat cycle systems include: indoor air conditioners, shop air conditioners, shopping mall air conditioners, equipment air conditioners, split air conditioners that connect one or more indoor and outdoor units with refrigerant piping, window air conditioners, portable air conditioners, rooftop or central air conditioners that transport cold and warm air via ducts, automotive air conditioners, and various other air conditioners; gas engine heat pumps; air conditioning units for trains, automobiles, etc.; display cases such as built-in display cases and separate display cases; various refrigerators such as refrigerators, cooling units, and turbine refrigerators used in commercial cold storage, ice makers, integrated refrigerators, vending machines, and containers or cold storage for maritime transport; or dedicated heating circulation units. Examples of dedicated heating circulation units include, for example, hot water systems, floor heating systems, and snow melting systems.

[0042] The method for preparing the fluorinated ethylene composition of the present invention is not particularly limited. For example, a method for preparing the fluorinated ethylene composition of the present invention can be described by mixing fluorinated ethylene A with water in a prescribed proportion. In this mixture, the aforementioned lubricating oil and / or other additives can also be appropriately added. Furthermore, by blowing air or oxygen into the fluorinated ethylene composition, the oxygen content in the fluorinated ethylene composition can be adjusted to a desired range.

[0043] On the other hand, in the manufacture of fluorinated ethylene A, water is sometimes present mixed in with fluorinated ethylene A. When preparing the fluorinated ethylene composition of the present invention from such fluorinated ethylene A, it is possible to: (1) prepare the fluorinated ethylene composition by mixing water and fluorinated ethylene A, (2) prepare the fluorinated ethylene composition by maintaining the amount of water, and (3) prepare the fluorinated ethylene composition by reducing the amount of water. The method for reducing the amount of water is not particularly limited, and well-known methods can be widely used, for example, drying methods using adsorbents can be listed.

[0044] In the manufacture of fluorinated ethylene A, the aforementioned impurities are sometimes present in fluorinated ethylene A. These impurities can be removed by appropriate methods before preparing the fluorinated ethylene composition, or they can be used directly in the fluorinated ethylene composition without removing the impurities.

[0045] A method that includes adjusting the water content to below 100 ppm by mass based on the mass of the fluorinated ethylene as described in (1) to (3) above is suitable as a method for stabilizing fluorinated ethylene A.

[0046] The present invention will be described in more detail below through embodiments, but is not limited to these embodiments.

[0047] (Example) 1,2-Difluoroethylene is manufactured by dehydrofluorinating 1,1,2-trifluoroethane (HFC143). Furthermore, the obtained 1,2-difluoroethylene is dehydrated through a porous polymer or similar process. The water content in the treated 1,2-difluoroethylene was measured using a Karl Fischer moisture analyzer, and no water was detected. Additionally, the 1,2-difluoroethylene contains 60% E-type and 40% Z-type. The impurities contained in the 1,2-difluoroethylene are as follows.

[0048] 1,1,1-trifluoroethane (HFC-143a) 1,1,2-Trifluoroethylene (HFO-1123) 1,1-Difluoroethane (HFC-152a) fluoroethane (HFC-161) 1,1,2-Trifluoroethane (HFC-143) 2-Chloro-1,1,1-trifluoroethane (HCFC-133b) 1-Chloro-1,1,2-trifluoroethane (HCFC-133) 1,1-Dichloro-2,2,2-trifluoroethane (HCFC-123) 1-Chloro-1,2-difluoroethane (HCFC-142a) 1,2-Difluoroethane (HFC-152) Difluoromethane (HFC-32) Fluoromethane (HFC-41) dichlorofluoromethane (HCFC-22) 1,1,1,2-Tetrafluoroethane (HFC-134a) 1,1,2,2-Tetrafluoroethane (HFC-134) Pentafluoroethane (HFC-125) 2,3,3,3-Tetrafluoropropylene (HFO-1234yf) 1,2,3,3,3-Pentafluoropropylene (HFO-1225ye) 1,3,3,3-Tetrafluoropropylene (HFO-1234ze) Vinyl fluoride (HFO-1141) 3,3,3-Trifluoropropylene (HFO-1243zf) 1,1-Difluoroethylene (HFO-1132a) 1-Chloro-2,2-difluoroethylene (HCFO-1122) 1-Chloro-1,2-difluoroethylene (HCFO-1122a) Ethylene, propylene, acetylene Based on the mass of 1,2-difluoroethylene, the total amount of these impurities is less than 10,000 ppm by mass.

[0049] Next, the water content relative to the 1,2-difluoroethylene was adjusted to 10, 50, 100, and 1000 ppm by mass by adding a specified amount of water. The 1,2-difluoroethylene with the water content adjusted as described above was then sealed in a container, and oxygen was blown into the container to adjust the oxygen content relative to the 1,2-difluoroethylene as shown in Table 1. By operating as described above, the various fluorinated vinylidene compositions (Nos. 7-9, 12-14, 17-19) shown in Table 1, with the water and oxygen content adjusted to the specified ratios, were obtained.

[0050] (Comparative example) Except that no water or oxygen was added to the 1,2-difluoroethylene used in the examples, the various fluoroethylene compositions shown in Table 1, which were anhydrous and had their oxygen content adjusted to a specified ratio, were obtained by the same method as in the examples.

[0051] <Evaluation Methods> (Stability test 1 of fluorinated ethylene) The stability tests of the fluorinated vinyl compositions obtained in the above examples and comparative examples were conducted as follows. A fluorinated vinyl composition was added to a glass tube (ID8mmΦ×OD12mmΦ×L300mm) with one side sealed, containing 0.01 mol of 1,2-difluoroethylene. The tube was sealed to form a closed system. The tube was then placed in a thermostatic bath at 150°C for one week. Afterward, the tube was removed from the thermostatic bath and cooled. The appearance was checked, and the acid content in the gas inside the tube was analyzed to evaluate the stability of the fluorinated vinyl.

[0052] In the stability test 1 of fluorinated ethylene, the analysis of the acid components in the gas was performed as follows: The cooled tube was completely condensed with liquid nitrogen to solidify the gas trapped inside. Subsequently, the tube was opened, slowly thawed, and the gas was recovered in a Tedra sampling bag. 5g of pure water was injected into the Tedra sampling bag, and the acid components were extracted from the pure water while maintaining full contact with the recovered gas. The extract was analyzed by ion chromatography to determine the fluoride ions (F...). － The content (mass ppm) of ).

[0053] Table 1 Table 1 shows the results of stability test 1 for fluorinated vinylidene. In the reference example, the composition was oxygen-free (below the detection limit), therefore, fluorinated vinylidene was stable regardless of the presence of water. However, as in No. 5 of Table 1, if the water content is too high, the formation of solid matter in the composition was confirmed even in the absence of oxygen.

[0054] The compositions obtained in all examples suppressed the formation of acid components, stabilized fluorinated ethylene, and showed no visible formation of solid matter. In contrast, the compositions with a water content of 0 ppm produced a large amount of acid components, thus confirming the decomposition of fluorinated ethylene. Conversely, in compositions No. 10, 15, and 20, where the water content was excessive, the decomposition of fluorinated ethylene was less likely to occur, but the formation of solid matter was confirmed.

[0055] Therefore, it can be seen that the specific amount of water contained in the composition stabilizes 1,2-difluoroethylene. Thus, it can be said that the above composition exhibits excellent performance with any type of heat medium, refrigerant, foaming agent, solvent, cleaning agent, propellant, or extinguishing agent, and its performance remains stable. Therefore, it can be said that the above composition is suitable for any type of heat medium, refrigerant, foaming agent, solvent, cleaning agent, propellant, or extinguishing agent.

Claims

1. A fluorinated ethylene composition, characterized in that: Contains fluorinated ethylene with one or more fluorine atoms, water, and oxygen. The fluorinated ethylene is 1,2-difluoroethylene. Based on the mass of the fluorinated ethylene, the water content is below 100 ppm by mass. Based on the fluorinated ethylene, the oxygen content is less than 0.35 mol%.

2. The fluorinated ethylene composition according to claim 1, characterized in that: The 1,2-difluoroethylene is trans-1,2-difluoroethylene (HFO-1132(E)) and / or cis-1,2-difluoroethylene (HFO-1132(Z)).

3. The fluorinated ethylene composition according to claim 1 or 2, characterized in that: It also contains at least one selected from polyalkylene glycols, polyol esters and polyvinyl ethers.

4. The fluorinated ethylene composition according to claim 1 or 2, characterized in that: Used as a heat medium, refrigerant, foaming agent, solvent, cleaning agent, propellant, or fire extinguishing agent.

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