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WO2025072112A1 - Compositions à faible gwp comprenant du hfo-1132 et leurs utilisations - Google Patents

Compositions à faible gwp comprenant du hfo-1132 et leurs utilisations Download PDF

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Publication number
WO2025072112A1
WO2025072112A1 PCT/US2024/048070 US2024048070W WO2025072112A1 WO 2025072112 A1 WO2025072112 A1 WO 2025072112A1 US 2024048070 W US2024048070 W US 2024048070W WO 2025072112 A1 WO2025072112 A1 WO 2025072112A1
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Prior art keywords
hfo
weight percent
hfc
1234zee
composition
Prior art date
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Pending
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PCT/US2024/048070
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English (en)
Inventor
Joshua Hughes
Luke David SIMONI
Siddarth SITAMRAJU
Konstantinos Kontomaris
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Chemours Co FC LLC
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Chemours Co FC LLC
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Publication of WO2025072112A1 publication Critical patent/WO2025072112A1/fr
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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
    • 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
    • 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
    • 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
    • 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
    • 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
    • C10M2205/00—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions
    • C10M2205/02—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions containing acyclic monomers
    • C10M2205/028—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions containing acyclic monomers containing aliphatic monomers having more than four carbon atoms
    • C10M2205/0285—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions containing acyclic monomers containing aliphatic monomers having more than four carbon atoms used as base material
    • 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
    • C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
    • C10M2207/28—Esters
    • C10M2207/283—Esters of polyhydroxy compounds
    • C10M2207/2835—Esters of polyhydroxy compounds used as base material
    • 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
    • C10M2209/02—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • C10M2209/04—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds containing monomers having an unsaturated radical bound to an alcohol or ester thereof; bound to an aldehyde, ketonic, ether, ketal or acetal radical
    • 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
    • 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

Definitions

  • the present disclosure relates to compositions useful as refrigerants, and in particular, for refrigeration systems.
  • the compositions of the present disclosure are useful in methods for producing cooling, and methods for replacing refrigerants and refrigeration systems, including low and medium temperature refrigeration and transport refrigeration systems.
  • HFC refrigerants such as HFC-134a and HFC-125 respectively have global warming potentials (GWP) of 1,430 and 3,500 according to the UN's IPCC Fourth Assessment Report (AR4).
  • GWP global warming potentials
  • the instant invention solves certain problems associated with conventional refrigerants and provides refrigerant blends containing 1 ,1-difluoropropene, which meets the evolving regulatory landscape.
  • Certain embodiments disclosed herein relate to a fluoroethylene composition comprising 1 ,2-difluoroethylene (also called HFO-1132, or R-1132). This compound is shown herein to have advantageous properties for its use in refrigerant applications.
  • compositions comprising comprising HFO-1132 and at least one compound selected from the group consisting of HFC-32, HFC-134, and HFO-1234zeE.
  • compositions comprising, consisting of, or consisting essentially of HFO-1132, wherein said composition is selected from the group consisting of:
  • HFO-1132E, HFO-1132Z, HFO-1234zeE, and HFC-134 are HFO-1132E, HFO-1132Z, HFO-1234zeE, and HFC-134.
  • HFO-1234zeE HFC-32, and HFO-1132Z
  • HFO-1234zeE HFC-32, HFO-1132E, and HFO-1132Z
  • HFC-1234zeE HFO-1132E, HFO-1132Z, and HFC-134A
  • compositions comprising, consisting of, or consisting essentially of about 56 to about 99 weight percent of HFO-1132E and about 1 to about 44 weight percent HFC-32.
  • compositions comprising, consisting of, or consisting essentially of about 78 to about 99 weight percent of HFO-1132E and about 1 to about 22 weight percent of HFC-32.
  • compositions comprising, consisting of, or consisting essentially of about 56 to about 60 weight percent of HFO-1132E and about 40 to about 44 weight percent of HFC-32.
  • compositions comprising, consisting of, or consisting essentially of about 56 weight percent HFO-1132E and about 44 weight percent HFC-32.
  • compositions comprising, consisting of, or consisting essentially of about 74 to about 99 weight percent of HFO-1132E and about 1 to about 26 weight percent HFC- 134.
  • compositions comprising, consisting of, or consisting essentially of about 87 to about 99 weight percent of HFO-1132E and about 1 to about 13 weight percent of HFC-134.
  • compositions comprising, consisting of, or consisting essentially of about 74 weight percent HFO-1132E and about 26 weight percent HFC-134.
  • compositions comprising, consisting of, or consisting essentially of about 1 to about 99 weight percent of HFO- 1132E and about 1 to about 99 weight percent HFO-1234zeE.
  • compositions comprising, consisting of, or consisting essentially of about 42 to about 61 weight percent of HFO-1132E and about 39 to about 58 weight percent of HFO-1234zeE
  • compositions comprising, consisting of, or consisting essentially of about 20 to 71 weight percent HFO-1132E, from about 1 to 22 weight percent HFC-32, from about 1 to 13 weight percent HFC- 134, and from about 18 to 59 weight percent HFO-1234zeE; or from about 20 to 48 weight percent HFO-1132E, from about 1 to 22 weight percent HFC-32, from about 1 to 13 weight percent H FC- 134, and from about 33 to 59 weight percent HFO- 1234zeE.
  • compositions comprising, consisting of, or consisting essentially of about 0.5 to about 98.5 weight percent of HFO-1132E, about 0.5 to about 98.5 weight percent of HFO-1234zeE, and about 0.5 to about 44 weight percent HFC-32.
  • compositions comprising, consisting of, or consisting essentially of about.5 to about 98.5 weight percent of HFO-1132E, about 0.5 to about 98.5 weight percent of HFO-1234zeE, and about 1 to about 22 weight percent HFC-32.
  • compositions comprising, consisting of, or consisting essentially of about 8 to about 60 weight percent of HFO-1132E, about 40 to about 70 weight percent of HFO-1234zeE, and about 0.5 to about 22 of HFC-32.
  • compositions comprising, consisting of, or consisting essentially of about 50 weight percent HFO-1132E, about 43 weight percent HFO-1234zeE and about 7 weight percent HFC-32.
  • compositions comprising, consisting of, or consisting essentially of about 8 weight percent HFO-1132E, about 70 weight percent HFO-1234zeE, and about 22 weight percent HFC-32.
  • compositions comprising, consisting of, or consisting essentially of about 8 to about 42 weight percent HFO-1132E, about 46 to about 70 weight percent HFO-1234zeE and about 4 to about 22 weight percent HFC-32.
  • compositions comprising, consisting of, or consisting essentially of about 32 weight percent HFO- 1132E, about 49 weight percent HFO-1234zeE and about 19 weight percent HFC- 32.
  • compositions comprising, consisting of, or consisting essentially of about 8 weight percent HFO-1132E, about 70 weight percent HFO-1234zeE and about 22 weight percent HFC-32.
  • compositions comprising, consisting of, or consisting essentially of about 0.5 to about 98.5 wt-% of R-1132E, about 0.5 to about 98.5 wt-% R-1234zeE, and about 0.5 to about 26 wt-% R-134.
  • compositions comprising, consisting of, or consisting essentially of about 0.5 to about 98.5 wt-% of R-1132E, about 0.5 to about 98.5 wt-% R-1234zeE, and about 0.5 to about 13 wt-% R-134.
  • compositions comprising, consisting of, or consisting essentially of about 40 to about 98.5 wt-% of R-1132E, about 0.5 to about 58 wt-% of R-1234zeE, and about 0.5 to about 13 of R-134.
  • compositions comprising, consisting of, or consisting essentially of about 40 to about 47 wt-% R-1132E, about 40 to about 52 wt-% R- 1234zeE, and about 7 to about 3 wt-% R-134.
  • compositions comprising, consisting of, or consisting essentially of about 47 wt-% R-1132E, about 40 wt-% R-1234zeE and about 13 wt-% R-134.
  • compositions comprising, consisting of, or consisting essentially of about 40 wt-% R-1132E, about 47 wt-% R-1234zeE and about 13 wt-% R-134.
  • compositions comprising, consisting of, or consisting essentially of about 47 wt-% R- 1132E, about 40 wt-% R-1234zeE and about 13 wt-% R-134.
  • compositions comprising, consisting of, or consisting essentially of 0.25 to about 98.5 weight percent of HFO- 1132E, 0.25 to about 98.5 weight percent of HFO-1234zeE, 0.25 to about 26 weight percent HFC-134, and 0.25 to about 44 weight percent HFC-32.
  • compositions comprising, consisting of, or consisting essentially of 0.25 to about 98.5 weight percent of HFO-1132E, 0.25 to about 98.5 weight percent of HFO-1234zeE, 0.25 to about 13 weight percent HFC- 134, and 0.25 to about 21 weight percent HFC-32.
  • compositions comprising, consisting of, or consisting essentially of about 9 to about 61 weight percent of HFO-1132E, about 28 to about 70 weight percent of HFO-1234zeE, 0.25 to about 13 weight percent of HFC-134, and 0.25 to about 21 weight percent of HFC-32.
  • compositions comprising, consisting of, or consisting essentially of about 32 weight percent HFO-1132E, about 48 weight percent HFO-1234zeE, about 1 weight percent HFC-134, and about 19 weight percent HFC-32.
  • compositions comprising, consisting of, or consisting essentially of about 9 weight percent HFO-1132E, about 69.6 weight percent HFO- 1132E, about 0.5 weight percent HFC-134, and about 20.9 weight percent HFC-32.
  • compositions comprising, consisting of, or consisting essentially of about 9 to about 48 weight percent HFO- 1132E, about 36 to about 70 weight percentHFO-1234zeE, about 0.5 to about 13 weight percent HFC-134, and about 0.5 to about 21 weight percent H FC-32.
  • compositions comprising, consisting of, or consisting essentially of about 32 weight percent HFO-1132E, about 48 weight percent HFO-1234zeE, about 1 weight percent HFC-134, and about 19 weight percent HFC-32.
  • compositions comprising, consisting of, or consisting essentially of about 9 weight percent HFO- 1132E, about 69.6 weight percent HFO-1132E, about 0.5 weight percent HFC-134, and about 20.9 weight percent HFC-32
  • compositions comprising, consisting of, or consisting essentially of from about 1 to 97 weight percent HFO- 1132E, from about 1 to 97 weight percent HFO-1132Z, from about 1 to 44 weight percent HFC-32, and from about 1 to 97 weight percent HFO-1234zeE; or from about 1 to 97 weight percent HFO-1132E, from about 1 to 97 weight percent HFO- 1132Z, from about 1 to 22 weight percent HFC-32, and from about 1 to 97 weight percent HFO-1234zeE; or from about 8 to 62 weight percent HFO-1132E, from about 1 to 67 weight percent HFO-1132Z, from about 1 to 22 weight percent HFC-32, and from about 1 to 70 weight percent HFO-1234zeE; or from about 8 to 41 weight percent HFO-1132E, from about 1 to 40 weight percent HFO-1132Z, from about 3 to 22 weight percent HFC-32, and from about 29 to 70 weight percent HFO-1234zeE; or from
  • compositions comprising, consisting of, or consisting essentially of: about 28 weight percent HFO-1132E, about 21.5 weight percent HFC-32, and about 50.5 weight percent HFO-1234zeE; or about 32 weight percent HFO-1132Z, about 21 weight percent HFC-32, and about 47 weight percent HFO-1234zeE; or about 15 weight percent HFO-1132E, about 13 weight percent HFO-1132Z, about 21 weight percent HFC-32, and about 51 weight percent HFO-1234zeE; or about 36 weight percent HFO-1132E, about 4 weight percent HFO-1132Z, about 16 weight percent HFC-32, and about 44 weight percent HFO-1234zeE; or about 9 weight percent HFO-1132E, about 40 weight percent HFO-1132Z, about 22 weight percent HFC-32, and about 29 weight percent HFO-1234zeE; or about 49 weight percent HFO-1132E, about 2 weight percent HFO-1132Z, about 7 weight percent HFC-32, and about 42 weight percent
  • compositions further comprising at least one additional compound selected from methane, ethane, HCFC-22, HFC-23, HCC-30, HCFC-31 , HCC-40, HFC-41 , HFCF- 22, HFO-1141 , HFO-1225yeE, HFO-1225yeZ, HFO-1234yf, HFO-1243zf, HFC-161 , HFC-152, HFC-143, HFC-143a, HFC-134a, HCFO-1122, HCFO-1122aE, HCFO- 1122aZ, HCC-150, HCFC-151 , CFO-1112E, CFO-1112Z, HCFC-142a, HCFC-132, HCFC-133, HCFC-133b, HCFC-123, HFC-236fa, HFC-245fa, HFC-245eb, HFO- 1123, HFO-1132a, HC
  • compositions wherein said composition further comprises from 0.1 to 200 ppm by weight of water; from about 10 ppm by volume to about 0.35 volume percent oxygen; and/or from about 100 ppm by volume to about 1.5 volume percent air or NAG.
  • compositions wherein said composition comprises a stabilizer.
  • compositions wherein the stabilizer is selected from the group consisting of nitromethane, ascorbic acid, terephthalic acid, azoles, phenolic compounds, cyclic monoterpenes, terpenes, phosphites, phosphates, phosphonates, thiols, and lactones.
  • compositions wherein the stabilizer is selected from tolutriazole, benzotriazole, tocopherol, hydroquinone, t-butyl hydroquinone, 2,6-di-terbutyl-4-methylphenol, fluorinated epoxides, n-butyl glycidyl ether, hexanediol diglycidyl ether, allyl glycidyl ether, butylphenylglycidyl ether, d-limonene, a-terpinene, p-terpinene, a-pinene, p- pinene, or butylated hydroxytoluene.
  • the stabilizer is selected from tolutriazole, benzotriazole, tocopherol, hydroquinone, t-butyl hydroquinone, 2,6-di-terbutyl-4-methylphenol, fluorinated epoxides, n-butyl
  • compositions wherein the stabilizer is present in an amount from about 0.001 to 1.0 weight percent based on the weight of the refrigerant.
  • compositions wherein the composition further comprises a lubricant are also disclosed herein.
  • compositions wherein said lubricant is at least one selected from the group consisting of polyalkylene glycol, polyol ester, poly-a-olefin, and polyvinyl ether.
  • compositions wherein said lubricant is a polyol ester or a polyvinyl ether.
  • compositions wherein said lubricant has at least one property selected from the group consisting of volume resistivity of greater than 10 10 Q-m at 20 °C; surface tension of from about 0.02 N/m to 0.04 N/m at 20 °C; kinemetic viscosity of from about 20 cSt to about 500 cSt at 40 °C; a breakdown voltage of at least 25 kV; and a hydroxy value of at most 0.1 mg KOH/g.
  • compositions wherein the composition comprises at least one tracer.
  • compositions wherein said tracer is present in an amount from about 1.0 ppm by weight to about 1000 ppm by weight.
  • compositions wherein said at least one tracer is selected from the group consisting of hydrofluorocarbons, hydrofluoroolefins, hydrochlorocarbons, hydrochlorofluorocarbons, hydrochlorofluoroolefins, hydrochlorocarbons, hydrochloroolefins, chlorofluorocarbons, chlorofluoroolefins, hydrocarbons, perfluorocarbons, perfluoroolefins, and combinations thereof.
  • compositions wherein said at least one tracer is selected from the group consisting of HFC-23, HCFC-31, HFC-41 , HFC-161, HFC-143a, HFC-134a, HFC-125, HFC- 236fa, HFC-236ea, HFC-245cb, HFC-245fa, HFC-254eb, HFC-263fb, HFC-272ca, HFC-281ea, HFC-281fa, HFC-329p, HFC-329mmz, HFC338mf, HFC-338pcc, CFC- 12, CFC-11, CFC-114, CFC-114a, HCFC-22, HCFC-123, HCFC-124, HCFC-124a, HCFC-141b, HCFC-142b, HCFC-151a, HCFC-244bb, HCC-40, HFO-1141, HCFO- 1130,
  • compositions wherein the composition is free of or substantially free of Group A Fluorinated Substances, and wherein degradation products of the composition are free of or substantially free of Group A Fluorinated Substances.
  • refrigeration systems comprising a composition of any of the foregoing embodiments.
  • refrigeration systems comprising a composition of any of the foregoing embodiments, for use in high ambient applications, wherein outdoor temperatures are above about 35°C.
  • refrigeration systems comprising an evaporator, compressor, condenser, and expansion device, each operably connected to perform a vapor compression cycle.
  • refrigeration systems wherein said refrigeration system is for residential, light commercial, or industrial refrigeration.
  • compositions of any of the foregoing embodiments as refrigerant in low temperature refrigeration systems, medium temperature refrigeration systems, and/or transport refrigeration systems.
  • compositions comprising, consisting of, or consisting essentially of 1 ,2-difluoroethylene (HFO-1132), and at least one compound selected from the group difluoromethane (HFC-32), 1 , 1 ,2,2- tetrafluoroethane (R-134), and E-1 ,3,3,3-tetrafluoropropene (HFO-1234zeE).
  • HFO-1132 1 ,2-difluoroethylene
  • R-134 1 , 1 ,2,2- tetrafluoroethane
  • E-1 ,3,3,3-tetrafluoropropene HFO-1234zeE
  • the compositions may potentially be candidates to replace refrigerants such as R-454C, R-404A, or R-449A with low Global Warming Potential (GWP), improved environmental fate characteristics, and improved energy efficiency (COP).
  • GWP Global Warming Potential
  • COP energy efficiency
  • compositions comprise, consist of, or consist essentially of HFO-1132 and at least one compound selected from the group consisting of HFC-32, HFC-134, and HFO-1234zeE. These blends provide refrigerant blends with low global warming potential, improved glide as compared to other suggested refrigerant blends, and improved coefficient of performance as compared to existing refrigerants and other proposed replacements.
  • a heat transfer system is the system (or apparatus) used to produce a heating or cooling effect in a particular space.
  • a heat transfer system may be a mobile system or a stationary system.
  • Examples of heat transfer systems are any type of refrigeration systems and air conditioning systems including, but are not limited to, stationary heat transfer systems, air conditioners, freezers, refrigerators, heat pumps, flooded evaporator heat pumps, direct expansion chillers heat pumps, chillers, flooded evaporator chillers, direct expansion chillers, walk-in coolers, mobile refrigerators, mobile heat transfer systems, mobile heat pumps (including heat pumps for cabin comfort cooling and heating in automobiles), mobile air conditioning units (for cooling of passenger compartments in automobiles), dehumidifiers, and combinations thereof.
  • the focus of the present application is refrigeration systems, including low temperature refrigeration systems and medium temperature refrigeration systems.
  • HFO-1132 1,2-difluoroethylene exists as two possible isomers, HFO- 1132E and HFO-1132Z.
  • HFO-1132 refers to either isomer individually, or a mixture of isomers.
  • HFO-1132 may be prepared by dehydrochlorination of 1-chloro-1,2-difluoroethane (HCFC-142a) in either the gas phase or liquid phase as described in U.S. Patent Publication 2022-0017438A. The reaction will produce both the E- and Z- isomers of the compound, but they are separable by distillation.
  • compositions comprising, “comprising,” “includes,” “including,” “has,” “having” or any other variation thereof, are intended to cover a non-exclusive inclusion.
  • a composition, process, method, article, or apparatus that comprises a list of elements is not necessarily limited to only those elements but may include other elements not expressly listed or inherent to such composition, process, method, article, or apparatus.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Physics & Mathematics (AREA)
  • Combustion & Propulsion (AREA)
  • Thermal Sciences (AREA)
  • Materials Engineering (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Lubricants (AREA)

Abstract

La présente invention concerne des compositions comprenant du HFO-1132 et au moins un composé choisi dans le groupe constitué par HFC-32, HFC-134 et HFO-1234zeE. Les compositions sont utiles dans des procédés de refroidissement, des systèmes de réfrigération, comprenant des systèmes de réfrigération basse température, moyenne température et de transport frigorifique, et des procédés de remplacement de fluides frigorigènes existants.
PCT/US2024/048070 2023-09-29 2024-09-24 Compositions à faible gwp comprenant du hfo-1132 et leurs utilisations Pending WO2025072112A1 (fr)

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US63/541,415 2023-09-29

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