1,1,1,2,2,4,5,5,5-Nonafluoro-4-(trifluoromethyl)-3-pentanone...

Compositions – Vaporization – or expansion – refrigeration or heat or energy... – With lubricants – or warning – stabilizing or anti-corrosion...

Reexamination Certificate

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Details

C252S067000

Reexamination Certificate

active

07338616

ABSTRACT:
Disclosed herein are refrigerant and heat transfer fluid compositions comprising 1,1,1,2,2,4,5,5,5-nonafluoro-4-(trifluoromethyl)-3-pentanone and at least one hydrocarbon. These compositions are useful in refrigeration and air conditioning systems that employ a centrifugal compressor. Also disclosed herein are azeotropic or near azeotropic refrigerant and heat transfer fluid compositions comprising 1,1,1,2,2,4,5,5,5-nonafluoro-4-(trifluoromethyl)-3-pentanone and at least one hydrocarbon.

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patent: 2005/0166607 (2005-08-01), Brasz et al.
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International Search Report, date of mailing: Aug. 15, 2006.
Written Opinion of the International Searching Authority, date of mailing: Aug. 15, 2006.
Biancardi et. al., “Component Design Issues and Limitations With 3rdGeneration HFC, HC and Natural Refrigerants”, Science et Technique du Frond, 1994, pp. 365-386.

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