Mixtures of pentafluoropropane and a hydrofluorocarbon having 3

Details Mixtures of pentafluoropropane and a hydrofluorocarbon having 3 Mixtures of pentafluoropropane and a hydrofluorocarbon having 3

1996-07-25

1998-09-01

Cooney, Jr., John M.

Compositions

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

62 86, 62114, 252 69, 252305, 252364, 432 1, 432 13, 521 98, 521131, 521155, 521902, 521910, 585 1, 585 2, C09K 504

Patent

active

058007296

ABSTRACT:
The invention discloses novel azeotrope-like mixtures of fluorinated compounds which are useful for heating and cooling as heat transfer agents and/or refrigerants. The azeotrope-like mixture comprises: (a) pentafluoropropane; and (b) a hydrofluorocarbon of the formula: C.sub.x F.sub.y H.sub.z, wherein x is 3, 4, 5, or 6 and y and z are each independently 1 or a positive whole number such that the result of y/(y+z) is greater than 0.67.

REFERENCES:
patent: 5496866 (1996-03-01), Sommerfield et al.
patent: 5562857 (1996-10-01), Werner et al.
patent: 5672294 (1997-09-01), Lund et al.

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