Environmentally beneficial and effective hydrochlorofluorocarbon compositions for fire extinguishing applications
View Patent ↗Compositions are described which are useful in many applications such as fire extinguishing or refrigeration. The compositions may include a hydrochlorofluorocarbon such as 2,2-dichloro-1,1,1-trifluoroethane, a dispersant such as CF 3 I, and an inert gas such as argon, and may in some embodiments be held under pressure. For example, some fire extinguishing compositions may be composed of 2,2-dichloro-1,1,1-trifluoroethane, CF 3 I, and argon.
1. A fire extinguishing composition, comprising about 92% to about 97% by weight 2,2-dichloro-1,1,1-trifluoroethane and about 3% to about 8% by weight CF 3 I based upon the weight of the composition without argon, and wherein the addition of argon results in a composition pressure of about 70 psig to about 150 psig at about 20° C.
2. The fire extinguishing composition of claim 1 , which is free of SF 6 , CF 4 , CHF 3 , and CO 2 .
3. The fire extinguishing composition of claim 1 , which is free of CF 4 .
4. The fire extinguishing composition of claim 1 , wherein the CF 3 I has a concentration in the range of about 4% to about 6% by weight based upon the total weight of the composition without the argon.
5. A fire extinguishing composition, comprising about 94% to about 96% by weight 2,2-dichloro-1,1,1-trifluoroethane and about 4% to about 6% by weight CF 3 I based upon the weight of the composition without argon, and wherein the addition of argon results in a composition pressure of about 100 psig at about 20° C.
6. The fire extinguishing composition of claim 5 , which is free of SF 6 , CF 4 , CHF 3 , and CO 2 .
7. The fire extinguishing composition of claim 5 , which is free of CF 4 .