Perfluoroisohexene as a cooling and insulating medium
AssigneeHoechst Aktiengesellschaft
InventorsAlfons Gisser, Konrad Von Werner, Joachim Naumann, Heiner Debrodt, Wilfried Becker
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Abstract
A mixture of isomers of the formula C.sub.6 F.sup.12, which contains at least 80% by weight of the trans isomer of perfluoro-4-methyl-2-pentene and at most 3% by weight of perfluoro-2-methyl-2-pentene, is suitable as a cooling and insulating medium and can be used as a substitute 1,1,2-trichloro-1,2,2-trifluoroethane.
Claims25
A method of heat transfer, comprising the step of transferring heat to or from a heat transfer medium comprising a plurality of isomers of perfluorohexene, said plurality containing at least 80% by weight of the trans isomer of perfluoro-4-methyl-2-pentene and less than 3% by weight of perfluoro-2-methyl-2-pentene.
A method of replacing the heat transfer medium 1,1,2-trichloro-1,2,2-trifluoroethane in a heat transfer device with a fluorine-carbon heat transfer medium without substantially changing the geometry of the heat transfer device, comprising:
- replacing the 1,1,2-trichloro-1,2,2-trifluoroethane with a plurality of isomers of perfluorohexene, said plurality containing at least 80% by weight of the trans isomer of perfluoro-4-methyl-2-pentene and less than 3% by weight of perfluoro-2-methyl-2pentene.
Dependencies are inferred from the claim text.