Compositions – Vaporization – or expansion – refrigeration or heat or energy... – With lubricants – or warning – stabilizing or anti-corrosion...
Reexamination Certificate
2008-01-01
2008-01-01
Hardee, John R. (Department: 1751)
Compositions
Vaporization, or expansion, refrigeration or heat or energy...
With lubricants, or warning, stabilizing or anti-corrosion...
C252S067000
Reexamination Certificate
active
11437024
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 hydrofluorocarbon for use in refrigeration and air conditioning systems employing a centrifugal compressor. The compositions may be azeotropic or near-azeotropic.
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International Search Report, date of mailing: Aug. 29, 2006.
Written Opinion of the International Search Authority, date of mailing: Aug. 29, 2006.
Biancardi et. al., “Component Design Issues and Limitations With 3rdGeneration HFC, HC and Natural Refrigerants”, Science Et Technique Du Froid, 1994, pp. 365-386.
Leck Thomas J.
Minor Barbara Haviland
Nappa Mario Joseph
Sievert Allen Capron
E.I. du Pont de Nemours and Company
Hamby Jane O.
Hardee John R.
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