AZEOTROPE-LIKE COMPOSITIONS OF TETRAFLUOROPROPENE AND HYDROFLUOROCARBONS
First Claim
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1. A method for cooling an article comprising:
- condensing a refrigerant composition comprising an azeotrope-like composition comprising effective amounts of trans-1,3,3,3-tetrafluoropropene (transHFO-1234ze) and a compound selected from the group consisting of 1,1,1,2,3,3,3-heptafluoropropane (“
HFC-227ea”
) 1,1,1,2,-tetrafluoroethane (“
HFC-134a”
), 1,1,1,2,2-pentafluoroethane (“
HFC-125”
) and combinations of two or more of these; and
thereafter evaporating said refrigerant composition in the vicinity of the article to be cooled.
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Accused Products
Abstract
Provided are azeotrope-like compositions comprising tetrafluoropropene and hydrofluorocarbons and uses thereof, including use in refrigerant compositions, refrigeration systems, blowing agent compositions, and aerosol propellants.
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Citations
7 Claims
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1. A method for cooling an article comprising:
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condensing a refrigerant composition comprising an azeotrope-like composition comprising effective amounts of trans-1,3,3,3-tetrafluoropropene (transHFO-1234ze) and a compound selected from the group consisting of 1,1,1,2,3,3,3-heptafluoropropane (“
HFC-227ea”
) 1,1,1,2,-tetrafluoroethane (“
HFC-134a”
), 1,1,1,2,2-pentafluoroethane (“
HFC-125”
) and combinations of two or more of these; andthereafter evaporating said refrigerant composition in the vicinity of the article to be cooled.
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2. A method for heating an article comprising:
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condensing, in the vicinity of the article to be heated, a refrigerant composition comprising an azeotrope-like composition comprising effective amounts of trans-1,3,3,3-tetrafluoropropene (transHFO-1234ze) and a compound selected from the group consisting of 1,1,1,2,3,3,3-heptafluoropropane (“
HFC-227ea”
) 1,1,1,2,-tetrafluoroethane (“
HFC-134a”
), 1,1,1,2,2-pentafluoroethane (“
HFC-125”
) and combinations of two or more of these; andthereafter evaporating said refrigerant composition.
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3. A method of recharging a refrigerant system that contains a refrigerant to be replaced and a lubricant comprising:
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removing the refrigerant to be replaced from the refrigeration system while retaining a substantial portion of the lubricant in said system; and introducing into the system an azeotrope-like refrigerant comprising effective amounts of trans-1,3,3,3-tetrafluoropropene (transHFO-1234ze) and a compound selected from the group consisting of 1,1,1,2,3,3,3-heptafluoropropane (“
HFC-227ea”
) 1,1,1,2,-tetrafluoroethane (“
HFC-134a”
), 1,1,1,2,2-pentafluoroethane (“
HFC-125”
) and combinations of two or more of these.
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4. A method of preparing a foam comprising:
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providing a foamable composition comprising (a) at least one foamable component and (b) a blowing agent comprising an azeotrope-like mixture consisting essentially of trans-1,3,3,3-tetrafluoropropene (transHFO-1234ze) and a compound selected from the group consisting of 1,1-difluoroethane (“
HFC-152a”
), 1,1,1,2,3,3,3-heptafluoropropane (“
HFC-227ea”
), 1,1,1,2-tetrafluoroethane (“
HFC-134a”
), 1,1,1,2,2-pentafluoroethane (“
HFC-125”
) and combinations of two or more of these; andreacting said foamable composition to form a foam.
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5. A method of preparing a foam comprising:
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providing a foamable composition comprising (a) at least one foamable component and (b) a blowing agent comprising an azeotrope-like mixtures comprising effective amounts of trans-1,3,3,3-tetrafluoropropene (transHFO-1234ze) and a compound selected from the group consisting of 1,1,1,2,3,3,3-heptafluoropropane (“
HFC-227ea”
) 1,1,1,2,-tetrafluoroethane (“
HFC-134a”
), 1,1,1,2,2-pentafluoroethane (“
HFC-125”
) and combinations of two or more of these; andreacting said foamable composition to form a foam.
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6. A method for preparing a sprayable composition comprising mixing
an active ingredient and, optionally, one or more inert ingredients and/or solvents, and a propellant comprising an azeotrope-like mixture consisting essentially of trans-1,3,3,3-tetrafluoropropene (transHFO-1234ze) and a compound selected from the group consisting of 1,1-difluoroethane (“ - HFC-152a”
), 1,1,1,2,3,3,3-heptafluoropropane (“
HFC-227ea”
), 1,1,1,2-tetrafluoroethane (“
HFC-134a”
), 1,1,1,2,2-pentafluoroethane (“
HFC-125”
) and combinations of two or more of these.
- HFC-152a”
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7. A method for preparing a sprayable composition comprising mixing an active ingredient and, optionally, one or more inert ingredients and/or solvents, and
a propellant comprising an azeotrope-like mixture comprising effective amounts of trans-1,3,3,3-tetrafluoropropene (transHFO-1234ze) and a compound selected from the group consisting of 1,1,1,2,3,3,3-heptafluoropropane (“ - HFC-227ea”
) 1,1,1,2,-tetrafluoroethane (“
HFC-134a”
), 1,1,1,2,2-pentafluoroethane (“
HFC-125”
) and combinations of two or more of these.
- HFC-227ea”
Specification
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Current AssigneeHoneywell International Inc.
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Original AssigneeHoneywell International Inc.
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InventorsSingh, Rajiv R., Knopeck, Gary M., Pham, Hang T., Diringer, Jeremy N., Herena, Louis E.
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Granted Patent
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Time in Patent OfficeDays
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Field of Search
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US Class Current252/67
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CPC Class CodesA01N 29/02 Acyclic compounds or compou...C09K 2205/122 Halogenated hydrocarbonsC09K 2205/126 Unsaturated fluorinated hyd...C09K 2205/22 All components of a mixture...C09K 2205/32 The mixture being azeotropicC09K 2205/34 The mixture being non-azeot...C09K 2205/40 Replacement mixturesC09K 23/017 Mixtures of compoundsC09K 3/30 for aerosols aerosol contai...C09K 5/045 containing only fluorine as...C11D 7/5018 Halogenated solventsC11D 7/505 Mixtures of (hydro)fluoroca...F25B 1/00 Compression machines, plant...F25B 31/002 Lubrication
