Claims
- 1. An azeotropic or azeotrope-like composition consisting essentially of (i) about 1-99 weight percent 1,1,2,2,3,3-hexafluoropropane and about 99-1 weight percent 1,1,1,3,3,3-hexafluoropropane wherein when the temperature has been adjusted to about 25.degree. C., said composition has a vapor pressure between about 25.4 and about 39.5 psia; (ii) about 1-99 weight percent 1,1,1,2,2,3-hexafluoropropane and about 1-99 weight percent 1,1,2,3,3,3-hexafluoropropane wherein when the temperature has been adjusted to about 25.degree. C., said composition has a vapor pressure between about 27.6 and about 33.5 psia; (iii) about 1-99 weight percent 1,1,1,2,2,3-hexafluoropropane and about 99-1 weight percent 1,1,1,3,3,3-hexafluoropropane wherein when the temperature has been adjusted to about 25.degree. C., said composition has a vapor pressure between about 33.8 and about 41.7 psia; and (iv) about 1-99 weight percent 1,1,2,3,3,3-hexafluoropropane and about 1-99 weight percent 1,1,1,3,3,3-hexafluoropropane, wherein when the temperature has been adjusted to about 25.degree. C., said composition has a vapor pressure of between about 30.1 and about 41.4, wherein the change in vapor pressure of the original composition and the composition remaining after 50 percent has been removed, is less than ten percent.
- 2. An azeotropic or azeotrope-like composition consisting essentially of (i) about 1-99 weight percent 1,1,2,2,3,3-hexafluoropropane and about 99-1 weight percent 1,1,1,3,3,3-hexafluoropropane wherein when the temperature has been adjusted to about 25.degree. C., said composition has a vapor pressure between about 25.4 and about 39.5 psis; (ii) about 1-99 weight percent 1,1,1,2,2,3-hexafluoropropane and about 1-99 weight percent 1,1,2,3,3,3-hexafluoropopane wherein when the temperature has been adjusted to about 25.degree. C., said composition has a vapor pressure between about 27.6 and about 33.5 psia; (iii) about 1-99 weight percent 1,1,1,2,2,3-hexafluoropropane and about 99-1 weight percent 1,1,1,3,3,3-hexafluoropropane wherein when the temperature has been adjusted to about 25.degree. C., said composition has a vapor pressure between about 33.8 and about 41.7 psis; and (iv) about 1-99 weight percent 1,1,2,3,3,3-hexafluoropropane and about 1-99 weight percent 1,1,1,3,3,3-hexafluoropropane, wherein when the temperature has been adjusted to about 25.degree. C., said composition has a vapor pressure of between about 30.1 and about 41.4 and wherein said compositions (i)-(iv) form binary compositions having a maximum or minimum vapor pressure when compared to the vapor pressures of the components of the binary composition.
- 3. A process for producing refrigeration, comprising condensing a composition of claim 1 and thereafter evaporating said composition in the vicinity of a body to be cooled.
- 4. A process for producing heat comprising condensing a composition of claim 1 in the vicinity of a body to be heated, and thereafter evaporating said composition.
- 5. A process for producing refrigeration, comprising condensing a composition of claim 2 and thereafter evaporating said composition in the vicinity of a body to be cooled.
- 6. A process for producing heat comprising condensing a composition of claim 2 in the vicinity of a body to be heated, and thereafter evaporating said composition.
CROSS-REFERENCE TO RELATED APPLICATION
This is a division of application Ser. No. 08/215,436, filed Mar. 21, 1994, now U.S. Pat. No. 5,538,659, which is a continuation-in-part of U.S. patent application Ser. No. 08/039,563, filed Mar. 29, 1993, abandoned.
US Referenced Citations (15)
Foreign Referenced Citations (18)
Number |
Date |
Country |
2009169 |
Jan 1990 |
CAX |
2089860 |
Aug 1993 |
CAX |
0451692A-2 |
Apr 1991 |
EPX |
54-006882 |
Jan 1979 |
JPX |
217138 |
Jan 1990 |
JPX |
2209833 |
Aug 1990 |
JPX |
2-272086 |
Nov 1990 |
JPX |
05140545-A |
Jun 1993 |
JPX |
05222235-A |
Aug 1993 |
JPX |
05202220-A |
Aug 1993 |
JPX |
5230265 |
Sep 1993 |
JPX |
5279659 |
Oct 1993 |
JPX |
06041591-A |
Feb 1994 |
JPX |
547466 |
Jan 1978 |
SUX |
2274462 |
Jul 1994 |
GBX |
WO9105585 |
May 1991 |
WOX |
WO9311201 |
Jun 1993 |
WOX |
9532935 |
Dec 1995 |
WOX |
Non-Patent Literature Citations (3)
Entry |
Kopko, Beyond CFCs: Extending the Search for New Refrigerants, Rev. Int. Froid 1990, vol. 13 Mars, 79-85, presented at the 1989 Ashrae CFC Technology Conference, Gaithersburg, Maryland. |
Chem. Abs. 83(2):27097n; "Mass Spectral Correlations of Halogenated 1,1,1,3,3,3-hexafluoropropanes and 1,1,1-trifluoroethanes;" Naae et al., 1974. |
International Search Report, International Application No. PCT/US 94,/03149, International Filing Date Mar. 28, 1994. |
Divisions (1)
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Date |
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Parent |
215436 |
Mar 1994 |
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Continuation in Parts (1)
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39563 |
Mar 1993 |
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