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

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

11653680

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 chlorocarbon, alcohol, ether, ester, N-(difluoromethyl)-N,N-dimethylamine, or mixtures thereof. 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 and at least one chlorocarbon, alcohol, ether, ester, N-(difluoromethyl)-N,N-dimethylamine, or mixtures thereof. 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: 5607912 (1997-03-01), Samejima et al.
patent: 5827812 (1998-10-01), Flynn et al.
patent: 5987793 (1999-11-01), Ebine
patent: 1288284 (2003-03-01), None
patent: WO 96/36688 (1996-11-01), None
patent: WO 96/40834 (1996-12-01), None
International Search Report; Date of Mailing: Dec. 20, 2005.
Written Opinion of the International Searching Authority; Date of Mailing: Dec. 20, 2005.

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