Composition of refrigerant mixtures for high back pressure...

Details Composition of refrigerant mixtures for high back pressure... Composition of refrigerant mixtures for high back pressure...

2005-01-18

2005-01-18

Einsmann, Margaret (Department: 1751)

Compositions

Vaporization, or expansion, refrigeration or heat or energy...

C252S068000, C062S114000

Reexamination Certificate

active

06843930

ABSTRACT:
There is provided a composition of refrigerant mixtures for high back pressure condition, comprising propane, propylene or 1,1-difluoroethane and, optionally, additive selected from the group consisting of carbon dioxide, trifluoromethyl iodide and mixture thereof. The composition according to the present invention is environment-friendly and can be directly drop in the conventional refrigerator system adopting HCFC-22 refrigerant without any systemic change.

REFERENCES:
patent: 5294359 (1994-03-01), Singh et al.
patent: 5624595 (1997-04-01), Sato et al.
patent: 5788886 (1998-08-01), Minor et al.
patent: 8-199158 (1996-08-01), None
patent: 9-59609 (1997-03-01), None
patent: 9-111230 (1997-04-01), None
patent: 11-199863 (1999-07-01), None

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