Claims
- 1. An azeotropic composition consisting essentially of about 87-97 weight percent polyfluoropentanes consisting essentially of about 80 weight percent 2,2,3-trihydroperfluoro-n-pentane, about 15 weight percent 2,3-dihydroperfluoro-n-pentane and about 5 weight percent 2,3,3-trihydroperfluoro-n-pentane, and about 3-13 weight percent methanol wherein the composition has a boiling point of about 43.4.degree. C. when the pressure is adjusted to substantially atmospheric pressure.
- 2. An azeotropic composition of claim 1, consisting essentially of about 91.9 weight percent polyfluoropentanes and about 8.1 weight percent methanol.
- 3. The process for cleaning a solid surface which comprises treating said surface with an azeotropic composition of claim 1.
- 4. The process of claim 3, wherein the solid surface is a printed circuit board contaminated with flux and flux-residues.
- 5. The process of claim 3, wherein the solid surface is a metal, a glass or a plastic.
- 6. In a process for expanding polymeric foams with a blowing agent, the improvement wherein the blowing agent is an azeotropic composition of claim 1.
- 7. A process for producing refrigeration which comprises evaporating an azeotropic composition of claim 1 in the vicinity of a body to be cooled.
- 8. A process for producing heat which comprises condensing the azeotropic composition of claim 1 in the vicinity of a body to be heated.
CROSS REFERENCE TO RELATED APPLICATION
This application is a continuation-in-part of U.S. Ser. No. 07/592,565 filed Oct. 3, 1990.
US Referenced Citations (7)
Foreign Referenced Citations (1)
Number |
Date |
Country |
431458 |
Jun 1991 |
EPX |
Continuation in Parts (1)
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Number |
Date |
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Parent |
592565 |
Oct 1990 |
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