Pseudo-azeotropic mixture of chlorodifluoromethane, 1,1,1-triflu

Details Pseudo-azeotropic mixture of chlorodifluoromethane, 1,1,1-triflu Pseudo-azeotropic mixture of chlorodifluoromethane, 1,1,1-triflu

1996-09-23

1998-03-03

McGinty, Douglas J.

Compositions

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

510177, 510410, 62114, 623241, C09K 504

Patent

active

057230579

ABSTRACT:
To replace the azeotropic mixture of chlorodifluoromethane and chloropentafluoroethane (R-502) in low-temperature refrigeration, the invention proposes to use a pseudo-azeotropic mixture containing 45 to 50% by weight of chlorodifluoromethane, 44 to 48% by weight of 1,1,1-trifluoroethane, and 6 to 8% by weight of pentafluoroethane. The thermodynamic properties of this mixture are very similar to those of mixture R-502.

REFERENCES:
patent: 4923626 (1990-05-01), Tamura et al.
patent: 4943388 (1990-07-01), Shankland et al.
patent: 5062985 (1991-11-01), Takemasa
patent: 5211867 (1993-05-01), Shankland et al.
patent: 5277834 (1994-01-01), Bivens et al.
patent: 5616276 (1997-04-01), Bivens et al.
The Random House College Dictionary, Revised Edition, Jess Stein editor in chief, p. 1067, 1982 (Month not known).

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