Azeotrope-like mixtures utilizable as refrigerating fluids
AssigneeAusimont S.p.A.
InventorsGiampiero Basile, Ezio Musso
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Abstract
Azeotrope-like mixtures, utilizable as refrigerating fluids in substitution of R-12 or R-502, constituted by hydrogen-(chloro)fluorocarbons, optionally in admixture with propane, cyclopropane or dimethylether.
Claims4
Azeotropic-like compositions consisting essentially of, by weight, from 20 to 50% of CF.sub.3 CHF.sub.2 (R 125), from 5 to 20% of CF.sub.3 CH.sub.3 (R 143a), from about 1 to 5% of CH.sub.3 CH.sub.2 CH.sub.3 (R 290), and from 40 to 60% of CHClF.sub.2 (R 22), wherein the vapor pressure (abs. bar) for said compositions changes by about 5 to about 15% after about 50% of the composition has been evaporated at 25.degree. C.
Dependencies are inferred from the claim text.