1,1,1,2,2,3,3,4,4-nonafluoro-4-methoxybutane refrigerant...

Details 1,1,1,2,2,3,3,4,4-nonafluoro-4-methoxybutane refrigerant... 1,1,1,2,2,3,3,4,4-nonafluoro-4-methoxybutane refrigerant...

2007-05-22

2007-05-22

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

11152731

ABSTRACT:
The present invention relates to compositions for use in refrigeration and air-conditioning systems comprising 1,1,1,2,2,3,3,4,4-nonafluoro-4-methoxybutane and at least one hydrocarbon. Further, the present invention relates to compositions for use in refrigeration and air-conditioning systems employing a centrifugal compressor comprising 1,1,1,2,2,3,3,4,4-nonafluoro-4-methoxybutane at least one hydrocarbon. The compositions of the present invention may be azeotropic or near-azeotropic and are useful in processes for producing cooling or heat or as heat transfer fluids.

REFERENCES:
patent: 5827812 (1998-10-01), Flynn et al.
patent: 5851436 (1998-12-01), Merchant et al.
patent: 6183663 (2001-02-01), Kalley et al.
patent: 6277807 (2001-08-01), Flynn et al.
patent: 6660709 (2003-12-01), Dournel et al.
patent: 2000007601 (2000-01-01), None
patent: WO 96/40834 (1996-12-01), None
International Search Report; Date of Mailing: Jan. 9, 2006.
Written Opinion of the International Searching Authority: Date of Mailing: Jan. 9, 2006.
T. Sako et al.; “Thermodynamic Properties of Fluorinated Ethers as Alternative Refrigerants”;Science et Technique du Froid; 1994; pp. 485-491.
Biancardi et al.; “Component Design Issues and Limitations with 3rdGeneration HFC, HC and Natural Refrigerants”;Science et Technique du Froid; 1994; pp. 365-386.

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