WO2016047298A1 - ハロオレフィン類組成物 - Google Patents
ハロオレフィン類組成物 Download PDFInfo
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- WO2016047298A1 WO2016047298A1 PCT/JP2015/072669 JP2015072669W WO2016047298A1 WO 2016047298 A1 WO2016047298 A1 WO 2016047298A1 JP 2015072669 W JP2015072669 W JP 2015072669W WO 2016047298 A1 WO2016047298 A1 WO 2016047298A1
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- hfc
- haloolefins
- hfo
- composition
- tetrafluoropropene
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K5/00—Heat-transfer, heat-exchange or heat-storage materials, e.g. refrigerants; Materials for the production of heat or cold by chemical reactions other than by combustion
- C09K5/02—Materials undergoing a change of physical state when used
- C09K5/04—Materials undergoing a change of physical state when used the change of state being from liquid to vapour or vice versa
- C09K5/041—Materials undergoing a change of physical state when used the change of state being from liquid to vapour or vice versa for compression-type refrigeration systems
- C09K5/044—Materials undergoing a change of physical state when used the change of state being from liquid to vapour or vice versa for compression-type refrigeration systems comprising halogenated compounds
- C09K5/045—Materials undergoing a change of physical state when used the change of state being from liquid to vapour or vice versa for compression-type refrigeration systems comprising halogenated compounds containing only fluorine as halogen
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C17/00—Preparation of halogenated hydrocarbons
- C07C17/38—Separation; Purification; Stabilisation; Use of additives
- C07C17/42—Use of additives, e.g. for stabilisation
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62D—CHEMICAL MEANS FOR EXTINGUISHING FIRES OR FOR COMBATING OR PROTECTING AGAINST HARMFUL CHEMICAL AGENTS; CHEMICAL MATERIALS FOR USE IN BREATHING APPARATUS
- A62D1/00—Fire-extinguishing compositions; Use of chemical substances in extinguishing fires
- A62D1/0028—Liquid extinguishing substances
- A62D1/0035—Aqueous solutions
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C21/00—Acyclic unsaturated compounds containing halogen atoms
- C07C21/02—Acyclic unsaturated compounds containing halogen atoms containing carbon-to-carbon double bonds
- C07C21/18—Acyclic unsaturated compounds containing halogen atoms containing carbon-to-carbon double bonds containing fluorine
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K23/00—Use of substances as emulsifying, wetting, dispersing, or foam-producing agents
- C09K23/007—Organic compounds containing halogen
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K3/00—Materials not provided for elsewhere
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K3/00—Materials not provided for elsewhere
- C09K3/30—Materials not provided for elsewhere for aerosols
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M171/00—Lubricating compositions characterised by purely physical criteria, e.g. containing as base-material, thickener or additive, ingredients which are characterised exclusively by their numerically specified physical properties, i.e. containing ingredients which are physically well-defined but for which the chemical nature is either unspecified or only very vaguely indicated
- C10M171/008—Lubricant compositions compatible with refrigerants
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- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D7/00—Compositions of detergents based essentially on non-surface-active compounds
- C11D7/22—Organic compounds
- C11D7/28—Organic compounds containing halogen
- C11D7/30—Halogenated hydrocarbons
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K2205/00—Aspects relating to compounds used in compression type refrigeration systems
- C09K2205/10—Components
- C09K2205/12—Hydrocarbons
- C09K2205/126—Unsaturated fluorinated hydrocarbons
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K2205/00—Aspects relating to compounds used in compression type refrigeration systems
- C09K2205/22—All components of a mixture being fluoro compounds
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K2205/00—Aspects relating to compounds used in compression type refrigeration systems
- C09K2205/40—Replacement mixtures
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2209/00—Organic macromolecular compounds containing oxygen as ingredients in lubricant compositions
- C10M2209/10—Macromolecular compoundss obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- C10M2209/103—Polyethers, i.e. containing di- or higher polyoxyalkylene groups
- C10M2209/1033—Polyethers, i.e. containing di- or higher polyoxyalkylene groups used as base material
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2020/00—Specified physical or chemical properties or characteristics, i.e. function, of component of lubricating compositions
- C10N2020/09—Characteristics associated with water
- C10N2020/097—Refrigerants
- C10N2020/101—Containing Hydrofluorocarbons
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
- C10N2030/66—Hydrolytic stability
Definitions
- the present invention relates to a haloolefin composition.
- Hydrofluorocarbons “HFC” represented by HFC-125, HFC-32 and the like are widely used as important substitutes for CFC, HCFC, etc., which are known as substances that destroy the ozone layer.
- HFC-410A which is a mixture of HFC-32 and HFC-125
- HFC-404A which is a mixture of HFC-125, HFC-134a and HFC-143a, etc. are known. Yes.
- the above alternative substances are used in various applications such as a heat medium, a refrigerant, a foaming agent, a solvent, a cleaning agent, a propellant, a fire extinguishing agent, and the consumption is large.
- GWP warming ability several thousand times that of CO 2
- Hydrohaloolefins having a low global warming potential are attracting attention as substances that solve the above problems.
- Hydrohaloolefins is a general term for unsaturated hydrocarbons including hydrogen, fluorine, and chlorine, and includes, for example, substances represented by the following chemical formulas.
- the number in parentheses after the chemical formula represents a refrigerant number generally used in refrigerant applications.
- fluoropropenes are particularly promising substances as low GWP refrigerants and heat medium candidates, but they may gradually decompose over
- the present invention has been made in view of the above, and an object of the present invention is to provide a highly stable haloolefin composition in which decomposition and oxidation are suppressed.
- the present inventor has found that the above object can be achieved by the presence of a trace amount of water in a mixture containing haloolefins and other specific substances.
- the present invention has been completed.
- the present invention relates to the following haloolefin compositions.
- a haloolefin composition comprising: 2.
- Item 2 The composition according to Item 1, wherein the content of water (c) is 200 ppm by weight or less with respect to the total amount of (a) haloolefins. 3. Item 3. The composition according to Item 1 or 2, further comprising (d) oxygen. 4). Item 4. The composition according to Item 3, wherein the content of (d) oxygen is 0.35 mol% or less based on the total amount of (a) haloolefins. 5. Item 5. The composition according to any one of Items 1 to 4, wherein (a) the haloolefin is tetrafluoropropene. 6). Item 6.
- composition according to Item 9 wherein the content of the water (c) is 200 ppm by weight or less with respect to the total amount of the (a) haloolefins. 11.
- Item 11 The composition according to Item 9 or 10, wherein the (a) haloolefin is tetrafluoropropene.
- 12 Item 12.
- 13 Item 12.
- the moisture content of the haloolefins improves the stability of the haloolefins contained in the composition. That is, intramolecular double bonds of haloolefins can exist stably, and oxidation of haloolefins hardly occurs, so that the performance of haloolefins is not easily impaired over a long period of time.
- the haloolefins composition comprises (a) haloolefins, and (b) by-products produced by the production of the haloolefins, HFO-1234ze, HFC-254eb, HFO-1243zf, HFC-245eb, HFC- 245fa, HFC-245cb, HFC-236ea, HFC-236fa, HFO-1225ye, 3,3,3-trifluoropropyne, HFC-23, HFC-32, HFC-125, HFC-143a, HFC-134a, FC- 1216, HCFO-1233xf, HCFO-1233zd, HCFO-1232xf, HCFO-1223xd, and at least one compound selected from the group of chloromethane (hereinafter abbreviated as “component (b)”), and (c) water Including.
- component (b) chloromethane
- HFO-1234ze is 1,3,3,3-tetrafluoropropene
- HFC-254eb is 1,1,1,2-tetrafluoropropane
- HFO-1243zf is 3,3,3-trifluoropropene
- HFC-245eb is 1,1,1,2,3-pentafluoropropane
- HFC-245fa is 1,1,1,3,3-pentafluoropropane
- HFC-245cb is 1,1,1,2,2 -Pentafluoropropane
- HFC-236ea is 1,1,1,2,3,3-hexafluoropropane
- HFC-236fa is 1,1,1,3,3,3-hexafluoropropane
- HFO-1225ye is 1 , 2,3,3,3-pentafluoropropene
- HFC-23 is trifluoromethane
- HFC-32 is methylene difluoride
- HFC-125 is 1,1,1,2,2-pentaflu
- the component (b) is, for example, a by-product in the production of (a) haloolefins. Therefore, the component (b) is a compound different from (a) haloolefins.
- the haloolefins composition (hereinafter sometimes abbreviated as “composition”) contains moisture, so that intramolecular double bonds of haloolefins can be stably present, and oxidation of haloolefins is also possible. As a result, the stability of haloolefins is improved.
- the above haloolefins refer to unsaturated hydrocarbons having a halogen atom such as fluorine or chlorine as a substituent.
- a halogen atom such as fluorine or chlorine
- all hydrogens may be substituted with halogen atoms, or part of hydrogens may be substituted with halogen atoms.
- the number of carbon atoms of the haloolefins is not particularly limited, and for example, the number of carbon atoms is 3 to 10.
- the number of carbon atoms of the haloolefins is preferably from 3 to 8, particularly preferably from 3 to 6, from the viewpoint that the stability of the haloolefins in the composition is further increased. Only one type of compound may be sufficient as the haloolefins contained in a composition, and 2 or more types of different compounds may be sufficient as it.
- Particularly preferred haloolefins include tetrafluoropropene, pentafluoropropene and trifluoropropene.
- the type of isomer is not particularly limited.
- Specific examples of particularly preferred haloolefins include 2,3,3,3-tetrafluoropropene (HFO-1234yf), 1,3,3,3-tetrafluoropropene (HFO-1234ze), 1,2,3 , 3-tetrafluoropropene (HFO-1234ye), 1,1,2,3-tetrafluoropropene (HFO-1234yc), 1,2,3,3,3-pentafluoropropene (HFO-1225ye), 1, 1,3,3,3-pentafluoropropene (HFO-1225zc), 3,3,3-trifluoropropene (HFO-1243zf), 1,1,1,4,4,4-hexafluoro-2-butene (HFO-1336mzz), 1,1,1,2,4,4,5
- haloolefin those produced by a known production method can be used.
- a production method there is a method of dehydrofluorinating a fluoroalkane in the presence of a catalyst (for example, a method described in JP-T-2012-500182).
- the number of carbon atoms of the fluoroalkane is not particularly limited, but is preferably 3 to 8, and more preferably 3 to 6.
- tetrafluoropropene can be produced by using pentafluoropropane as a raw material and performing a dehydrofluorination reaction in the presence of a catalyst.
- haloolefin is 2,3,3,3-tetrafluoropropene (HFO-1234yf)
- 1,1,1,2,3-pentafluoropropane or 1,1,1,1 is used as a raw material.
- 2,2-pentafluoropropane is used and dehydrofluorination reaction is performed in the presence of a catalyst
- 2,3,3,3-tetrafluoropropene can be obtained.
- the haloolefin is 1,3,3,3-tetrafluoropropene (HFO-1234ze)
- 1,1,1,3,3-pentafluoropropane is used as a raw material, and this is used in the presence of a catalyst.
- 1,3,3,3-tetrafluoropropene (HFO-1234ze) is obtained.
- a chromium catalyst such as chromium oxide or fluorinated chromium oxide, or other metal catalyst can be used as the catalyst, and the reaction temperature can be in the range of 200 to 500 ° C.
- the component (b), which is an essential component in the composition of the present embodiment can also be obtained.
- the component (b) which is an essential component in the composition of the present embodiment.
- it can be used in a state including an object.
- the by-product is also the component (b), it is not purified.
- the haloolefins when haloolefins are produced by a method in which a fluoroalkane is dehydrofluorinated in the presence of a catalyst, the haloolefins may be in a state in which a by-product is included.
- the component (b) in the composition includes HFO-1234ze, HFC-254eb, HFO-1243zf, HFC-245eb, HFC-245fa, HFC-245cb, HFC-236ea, HFC-236fa, HFO-1225ye, 3,3 , 3-trifluoropropyne, HFC-23, HFC-32, HFC-125, HFC-143a, HFC-134a, FC-1216, HCFO-1233xf, HCFO-1233zd, HCFO-1232xf, HCFO-1223xd, chloromethane It is a compound from a group, 1 type of these may be individual, and 2 or more types may be sufficient. In the case of two or more types, the combination is not particularly limited.
- component (b) one produced by a known production method may be used, and as described above, by-product produced by the production of haloolefins is used as the component (b). Also good.
- the type of water is not particularly limited, and distilled water, ion exchange water, filtered water, tap water, and other purified water such as ultrapure water obtained with a commercially available pure water generator or the like can be used.
- the water contains an acid such as HCl, the equipment may be corroded or the effect of stabilizing haloolefins may be reduced. It is preferable to remove HCl and the like to the extent.
- the acid content in this case is preferably 10 ppm by weight or less, more preferably 1 with respect to the total amount of the component (a), the component (b) and the component (c) contained in the composition. Weight ppm or less.
- the pH of the water is not particularly limited, but it may usually be in the range of 6-8. If the acid content in the water is within the above range, the pH of the water should normally fall within this range.
- the content of water contained in the composition is preferably 200 ppm by weight or less based on the total amount of (a) haloolefins. In this case, the effect
- the lower limit of the content of water contained in the composition is not limited as long as the effect of the present invention is exhibited, but can be, for example, 0.1 ppm by weight, more preferably 3 ppm by weight. Can do. Within this range, the stability of haloolefins in the composition is further improved.
- the content of water contained in the composition is particularly preferably more than 3 ppm by weight and less than 30 ppm by weight. In this case, the stability of haloolefins in the composition is further improved. Moreover, it is suppressed that refrigerant
- the content of the component (b) contained in the composition is 0.1 wtppm or more and less than 10,000 ppm by weight with respect to the total amount of haloolefins. There is little possibility that the stabilizing action of the hindered.
- the composition may contain other known additives as long as the effects of the present invention are not inhibited.
- the other additive is preferably 50% by weight or less, and more preferably 40% by weight or less, based on the total amount of the composition.
- the method for preparing the composition is not particularly limited, and for example, the composition can be obtained by preparing each component and mixing them in a predetermined blending amount.
- the presence of water makes the haloolefins highly stable because double bonds of haloolefins exist stably and oxidation and the like hardly occur. Therefore, it can be stored for a long period of time as compared with ordinary haloolefins. Moreover, the high stability of the haloolefins reduces the possibility that the performance of the haloolefins will be impaired. Therefore, for example, even when the composition is used as a refrigerant or a heat medium, the stability of the haloolefins is high, so that the performance as the refrigerant or the heat medium is excellent.
- the above composition may further contain (d) oxygen.
- the content of (d) oxygen is preferably 0.35 mol% or less based on the total amount of (a) haloolefins. Oxygen content Within this range, the stability of haloolefins in the composition is further improved. From this viewpoint, the content of oxygen in the composition is preferably as low as possible. However, since the composition contains water as described above, if the amount of oxygen is within the above range, the action of the water causes the haloolefin. The stability of the class can be retained.
- the lower limit value of the oxygen content in the composition can be, for example, 1 ppm which is the detection limit of gas chromatography.
- haloolefins include 2,3,3,3-tetrafluoropropene (HFO-1234yf), 1,3,3,3-tetrafluoro.
- the composition When the composition is used as a refrigerant or a heat medium, (e) at least one of polyalkylene glycol and polyol ether may be included in the composition as a lubricating oil.
- the component (b) When the composition contains at least one of polyalkylene glycol and polyol ether, the component (b) may be contained in the composition, or the component (b) may be contained in the composition. It does not have to be.
- the component (b) is not contained in the composition, the composition comprises (a) haloolefins, (c) water, (e) at least one of polyalkylene glycol and polyol ether. , Comprising.
- about (a) haloolefins and (c) water it is the same as that of the above-mentioned structure.
- the lubricating oil can be contained in an amount of 10 to 50% by mass based on the total amount of the component (a), the component (b) and the component (c) contained in the composition. Therefore, it is not particularly limited to this range. If it is this range, there is no possibility that the stability of haloolefins may be impaired. Further, the lubricating oil may further contain polyvinyl ether (PVE), or may be composed of polyvinyl ether alone.
- PVE polyvinyl ether
- PAG polyalkylene glycol
- POE polyol ether
- composition contains a lubricating oil
- (d) oxygen can also be contained in the composition.
- the content of (d) oxygen is preferably 0.35 mol% or less based on the total amount of (a) haloolefins for the same reason as described above.
- Refrigerants and heat media mainly composed of haloolefins are likely to decompose or oxidize when they come into contact with metals, etc., and the performance as a refrigerant or heat medium is likely to be impaired.
- the high stability of the haloolefins suppresses the deterioration of the performance of the refrigerant and the heat medium.
- the composition according to the present invention can be used not only for the refrigerant and heat medium applications but also for various other applications.
- specific examples of haloolefins include 2,3,3,3-tetrafluoropropene (HFO-1234yf), 1,3,3,3-tetrafluoropropene ( HFO-1234ze), 1,2,3,3-tetrafluoropropene (HFO-1234ye), 1,1,2,3-tetrafluoropropene (HFO-1234yc), 1,2,3,3,3-penta Fluoropropene (HFO-1225ye), 1,1,3,3,3-pentafluoropropene (HFO-1225zc), 3,3,3-trifluoropropene (HFO-1243zf), 1,1,1,4 4,4-hexafluoro-2-butene (HFO-1336mzz), 1,1,1,2,4,4,5,5,5-nonafluoropentene (HFO- 429myz
- HFO-1234yf 2,3,3,3-tetrafluoropropene (hereinafter abbreviated as “HFO-1234yf”) and water were prepared and blended so that the water content was 10 wt.% Relative to HFO-1234yf.
- the above HFO-1234yf was manufactured by the method as disclosed in Example 1 of JP2012-500192A and JP2009-126803A, for example.
- the HF produced at this time was deoxidized by a washing tower and an alkaline tower of NaOH aqueous solution.
- the resulting haloolefins composition contains a by-product (for example, 1,3,3,3-tetrafluoropropene (HFO-1234ze), ie, component (b)) produced in the production of HFO-1234yf. Can be.
- a by-product for example, 1,3,3,3-tetrafluoropropene (HFO-1234ze), ie, component (b)
- HFO-1234ze 1,3,3,3-tetrafluoropropene (hereinafter abbreviated as “HFO-1234ze”) and water were prepared and blended so that the water content was 10 wt.% Relative to HFO-1234ze.
- the above HFO-1234ze was obtained together with HFO-1234yf by removing HF from HFC-245eb, for example, as in the method described in JP2012-500192A.
- the produced HF was deacidified by a washing tower and an alkaline tower of NaOH aqueous solution.
- HFO-1234yf is a component of (b).
- Example 1 A haloolefin composition was obtained in the same manner as in Example 1 except that water was not blended.
- Example 2 A haloolefin composition was obtained in the same manner as in Example 2 except that water was not blended.
- the tube was allowed to stand in a thermostatic bath under an atmosphere of 150 ° C. and kept in this state for 1 week. Then, it took out from the thermostat and cooled, and the stability of haloolefins was evaluated by analyzing the acid content in the gas in a tube.
- the analysis of the acid content in the gas was performed by the following method.
- the tube after the cooling was completely solidified using liquid nitrogen. Thereafter, the tube was opened and gradually thawed to collect the gas in a Tedlar bag. 5 g of pure water was poured into this Tedlar bag, and the acid content was extracted into pure water while making good contact with the recovered gas.
- the extract was detected by ion chromatography, and the content (weight ppm) of fluoride ion (F ⁇ ) and trifluoroacetate ion (CF 3 COO ⁇ ) was measured.
- Table 1 shows the test results.
- yf and “ze (E)” represent “HFO-1234yf” and “HFO-1234ze”, respectively.
- (E) in “ze (E)” indicates that HFO-1234ze is in E form.
- No. in Table 1 In all of Nos. 5 to 8, the amount of oxygen added was 0.010 mol%. No. 5 is a composition that does not contain water. It can be seen that the acid content is higher than that of 6-8. That is, no. In No. 5, since the content of acid content is large, decomposition and oxidation of HFO-1234yf, which is a haloolefin, is No. 5. It turns out that it is promoting compared with 6-8. From this result, it can be seen that HFO-1234yf which is a haloolefin is stabilized in the composition containing water. No. In all of Nos. 9 to 12, the amount of oxygen added was 0.115 mol%. In all of Nos.
- the oxygen addition amount was 0.345 mol%, but the same tendency as in the case where the oxygen addition amount was 0.115 mol% was observed. Furthermore, when haloolefins were HFO-1234ze (No. 21 to 24, 25 to 28, 29 to 32), the same tendency was observed. No. 1-4 and no. In any of 17-20, the acid content is less than 1 ppm by weight, indicating that the decomposition of haloolefins has hardly progressed. This is presumably because no oxidation or the like occurred because oxygen was not added into the system. Therefore, in a system in which almost no oxygen is present, all haloolefins are in a stable state regardless of whether water is contained in the composition.
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Abstract
Description
CF3CF=CF2 (HFO-1216yc、ヘキサフルオロプロペンともいう。)
CF3CF=CHF (HFO-1225ye)
CF3CF=CH2 (HFO-1234yf)
CF3CH=CHF (HFO-1234ze)
CF3CH=CH2 (HFO-1243zf)
CF3CCl=CH2 (HCFO-1233xf)
CF2ClCCl=CH2(HCFO-1232xf)
CF3CH=CHCl(HCFO-1233zd)
CF3CCl=CHCl(HCFO-1223xd)
CClF2CCl=CHCl(HCFO-1222xd)
CFCl2CCl=CH2(HCFO-1231xf)
CH2ClCCl=CCl2(HCO-1230xa)
これらの中でも特にフルオロプロペン類は、低GWPの冷媒、熱媒体の候補として有望な物質であるが、時間の経過等により徐々に分解が生じることがあり、決して安定性が高い物質とはいえない。そのため、このような物質を種々の用途に使用するにあたっては、その使用状況又は使用環境によって性能が徐々に低下する等の問題がある。
1.(a)ハロオレフィン類と、
(b)HFO-1234ze、HFC-254eb、HFO-1243zf、HFC-245eb、HFC-245fa、HFC-245cb、HFC-236ea、HFC-236fa、HFO-1225ye、3,3,3-トリフルオロプロピン、HFC-23、HFC-32、HFC-125、HFC-143a、HFC-134a、FC-1216、HCFO-1233xf、HCFO-1233zd、HCFO-1232xf、HCFO-1223xd及びクロロメタンの群から選ばれる少なくとも1種以上の化合物と、
(c)水と、
を含んでなることを特徴とする、ハロオレフィン類組成物。
2.前記(a)ハロオレフィン類の全量に対して、前記(c)水の含有量が200重量ppm以下である、上記項1に記載の組成物。
3.さらに(d)酸素を含む、上記項1又は2に記載の組成物。
4.前記(a)ハロオレフィン類の全量に対して、前記(d)酸素の含有量が0.35mol%以下である、上記項3に記載の組成物。
5.前記(a)ハロオレフィン類が、テトラフルオロプロペンである、上記項1~4のいずれか1項に記載の組成物。
6.前記テトラフルオロプロペンが、2,3,3,3-テトラフルオロプロペンである、上記項5に記載の組成物。
7.前記テトラフルオロプロペンが、1,3,3,3-テトラフルオロプロペンである、上記項5に記載の組成物。
8.さらに(e)ポリアルキレングリコール及びポリオールエーテルの少なくとも一方を含む、上記項1~7のいずれか1項に記載の組成物。
9.(a)ハロオレフィン類と、
(c)水と、
(e)ポリアルキレングリコール及びポリオールエーテルの少なくとも一方と、
を含んでなることを特徴とする、ハロオレフィン類組成物。
10.前記(a)ハロオレフィン類の全量に対して、前記(c)水の含有量が200重量ppm以下である、上記項9に記載の組成物。
11.前記(a)ハロオレフィン類が、テトラフルオロプロペンである、上記項9又は10に記載の組成物。
12.前記テトラフルオロプロペンが、2,3,3,3-テトラフルオロプロペンである、上記項11に記載の組成物。
13.前記テトラフルオロプロペンが、1,3,3,3-テトラフルオロプロペンである、上記項11に記載の組成物。
定されるものではない。
2,3,3,3-テトラフルオロプロペン(以下「HFO-1234yf」と略記する)と、水とを準備し、これらを配合することで、HFO-1234yfに対して水の含有量が10重量ppm、200重量ppm、10000重量ppmの3種類のハロオレフィン類組成物を調製した。なお、上記HFO-1234yfは、たとえば、特開2012-500182号公報の実施例1、特開2009-126803号公報に示されるような方法で製造した。このとき生成するHFは水洗塔、NaOH水溶液のアルカリ塔により脱酸した。得られたハロオレフィン類組成物は、HFO-1234yfの製造において生成した副生成物(例えば、1,3,3,3-テトラフルオロプロペン(HFO-1234ze)、すなわち(b)の成分)が含まれ得る。
1,3,3,3-テトラフルオロプロペン(以下「HFO-1234ze」と略記する)と、水とを準備し、これらを配合することで、HFO-1234zeに対して水の含有量が10重量ppm、200重量ppm、10000重量ppmの3種類のハロオレフィン類組成物を調製した。なお、上記HFO-1234zeは、たとえば、特開2012-500182号公報に記載の方法のようにHFC-245ebの脱HFによりHFO-1234yfと共に得た。生成したHFは水洗塔、NaOH水溶液のアルカリ塔により脱酸した。HFO-1234yfは(b)の成分である。
水を配合しなかったこと以外は実施例1と同様の方法にてハロオレフィン類組成物を得た。
水を配合しなかったこと以外は実施例2と同様の方法にてハロオレフィン類組成物を得た。
上記実施例及び比較例で得られたハロオレフィン類組成物の各々について、以下のようにハロオレフィン類の安定性試験を行った。片側を溶封済みのガラス製チューブ(ID8mmΦ×OD12mmΦ×L300mm)に、ハロオレフィン類組成物をハロオレフィン類の含有量が0.01molとなるように加えた。チューブは溶封により密閉状態とした。このチューブを150℃の雰囲気下の恒温槽内に静置させ、この状態で1週間保持した。その後、恒温槽から取り出して冷却し、チューブ内のガス中の酸分の分析を行うことで、ハロオレフィン類の安定性を評価した。
上記実施例及び比較例で得られたハロオレフィン類組成物の各々について、以下のようにハロオレフィン類の安定性試験を行った。片側を溶封済みのガラス製チューブ(ID8mmΦ×OD12mmΦ×L300mm)にハロオレフィン類組成物をハロオレフィン類の含有量が0.01molとなるように加えた。次いで、酸素濃度がハロオレフィン類の充填モル数に対し所定のモル濃度(0.010モル%、0.115モル%又は0.345モル%)になるように調整して酸素をチューブ内に封入した。このチューブを150℃の雰囲気下の恒温槽内に静置させ、この状態で1週間保持した。その後、恒温槽から取り出して冷却し、チューブ内のガス中の酸分の分析を行うことで、ハロオレフィン類の安定性を評価した。
Claims (13)
- (a)ハロオレフィン類と、
(b)HFO-1234ze、HFC-254eb、HFO-1243zf、HFC-245eb、HFC-245fa、HFC-245cb、HFC-236ea、HFC-236fa、HFO-1225ye、3,3,3-トリフルオロプロピン、HFC-23、HFC-32、HFC-125、HFC-143a、HFC-134a、FC-1216、HCFO-1233xf、HCFO-1233zd、HCFO-1232xf、HCFO-1223xd及びクロロメタンの群から選ばれる少なくとも1種以上の化合物と、
(c)水と、
を含んでなることを特徴とする、ハロオレフィン類組成物。 - 前記(a)ハロオレフィン類の全量に対して、前記(c)水の含有量が200重量ppm以下である、請求項1に記載の組成物。
- さらに(d)酸素を含む、請求項1又は2に記載の組成物。
- 前記(a)ハロオレフィン類の全量に対して、前記(d)酸素の含有量が0.35mol%以下である、請求項3に記載の組成物。
- 前記(a)ハロオレフィン類が、テトラフルオロプロペンである、請求項1~4のいずれか1項に記載の組成物。
- 前記テトラフルオロプロペンが、2,3,3,3-テトラフルオロプロペンである、請求項5に記載の組成物。
- 前記テトラフルオロプロペンが、1,3,3,3-テトラフルオロプロペンである、請求項5に記載の組成物。
- さらに(e)ポリアルキレングリコール及びポリオールエーテルの少なくとも一方を含む、請求項1~7のいずれか1項に記載の組成物。
- (a)ハロオレフィン類と、
(c)水と、
(e)ポリアルキレングリコール及びポリオールエーテルの少なくとも一方と、
を含んでなることを特徴とする、ハロオレフィン類組成物。 - 前記(a)ハロオレフィン類の全量に対して、前記(c)水の含有量が200重量ppm以下である、請求項9に記載の組成物。
- 前記(a)ハロオレフィン類が、テトラフルオロプロペンである、請求項9又は10に記載の組成物。
- 前記テトラフルオロプロペンが、2,3,3,3-テトラフルオロプロペンである、請求項11に記載の組成物。
- 前記テトラフルオロプロペンが、1,3,3,3-テトラフルオロプロペンである、請求項11に記載の組成物。
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JP2021193197A (ja) | 2021-12-23 |
US20200263069A1 (en) | 2020-08-20 |
JP6954394B2 (ja) | 2021-10-27 |
US20160230060A1 (en) | 2016-08-11 |
KR20160135263A (ko) | 2016-11-25 |
EP3549995A1 (en) | 2019-10-09 |
US10968378B2 (en) | 2021-04-06 |
EP3040326B1 (en) | 2020-01-08 |
EP3130649A8 (en) | 2017-03-29 |
CN111205163A (zh) | 2020-05-29 |
EP3130649A1 (en) | 2017-02-15 |
EP3040326A1 (en) | 2016-07-06 |
JP2016190884A (ja) | 2016-11-10 |
JP6862127B2 (ja) | 2021-04-21 |
KR102280227B1 (ko) | 2021-07-21 |
US10669464B2 (en) | 2020-06-02 |
EP3040326A4 (en) | 2017-07-05 |
US20170058170A1 (en) | 2017-03-02 |
CN106458802A (zh) | 2017-02-22 |
CN106458802B (zh) | 2020-03-31 |
ES2774378T3 (es) | 2020-07-20 |
JP2023133430A (ja) | 2023-09-22 |
KR20180130604A (ko) | 2018-12-07 |
DK3040326T3 (da) | 2020-03-30 |
JP2016069634A (ja) | 2016-05-09 |
JP2020090688A (ja) | 2020-06-11 |
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