Azeotrope-like compositions of 1,1,1,2-tetrafluoropropene and 1,1,1,2-tetrafluoroethane
AssigneeHoneywell International Inc.
InventorsChristopher J. Seeton, Hang T. Pham, Rajiv R. Singh, Ryan Hulse, Mark W. Spatz, David P. Wilson, Samuel F. Yana Motta
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Abstract
Provided are azeotrope-like compositions consisting essentially of 1,1,1,2-tetrafluoropropene and 1,1,1,2-tetrafluoroethane and uses thereof, including use in refrigerant compositions, refrigeration systems, blowing agent compositions, and aerosol propellants.
Claims20
An azeotrope-like composition consisting essentially of from about 43.38 percent by weight to about 65.16 percent by weight of 1,1,1,2-tetrafluoropropene and from about 34.84 percent by weight to about 56.62 percent by weight of 1,1,1,2-tetrafluoroethane to form a non-flammable composition, said composition being azeotropic at least one concentration of the components within said range of component concentrations, said non-flammable composition having a boiling point that is below the boiling point of said 1,1,1,2-tetrafluoropropene and said 1,1,1,2-tetrafluoroethane and that is from about −29.16° C. to about −29.92° C. at a pressure of about 14.3 psia.
Dependencies are inferred from the claim text.