Azeotrope-like compositions of 1,1,2,3,3-pentafluoropropene
AssigneeHoneywell International Inc.
InventorsRyan J. Hulse, Hang T. Pham, Rajiv R. Singh
Life of this patent
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Abstract
The invention pertains to azeotrope-like compositions of 1,1,2,3,3-pentafluoropropene (HFC-1225yc) and any one of 1,1,1,2-tetrafluoropropene (HFC-1234yf) or the Z-isomer of 1,1,1,2,3-pentafluoropropene (HFC-1225yeZ), and uses thereof, including use in refrigerant compositions, refrigeration systems, blowing agent compositions, and aerosol propellants.
Claims28
An azeotrope-like composition comprising 1,1,2,3,3-pentafluoropropene and any one of 1,1,1,2-tetrafluoropropene or the Z-isomer of 1,1,1,2,3-pentafluoropropene.
A method for modifying a refrigeration apparatus which refrigeration apparatus comprises a refrigerant, which refrigerant comprises a combination of a chlorofluorocarbon or a hydrochlorofluorocarbon and a mineral oil, comprising removing at least a portion of the chlorofluorocarbon or hydrochlorofluorocarbon from the refrigerant and leaving a residue comprising the mineral oil, and adding to said residue an azeotrope-like composition comprising 1,1,2,3,3-pentafluoropropene and any one of 1,1,1,2-tetrafluoropropene or the Z-isomer of 1,1,1,2,3-pentafluoropropene.
Dependencies are inferred from the claim text.