Flame extinguishing compositions
AssigneeAusimot SpA
InventorsMario Visca, Gianfranco Spataro, Giuseppe Marchionni
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Abstract
Extinguishing compositions comprising a liquid extinguishing agent constituted by hydrofluoropolyethers having general formula HF.sub.2 CO(CF.sub.2 O).sub.n (CF.sub.2 CF.sub.2 O).sub.m CF.sub.2 H wherein n and m are integers comprised between 0 and 20, excluding when m and m are contemporaneously 0 and having boiling point between 30.degree. and 200.degree. C. and having an O/C molar ratio between 0.5-1.
Claims8
Extinguishing compositions comprising a liquid extinguishing agent constituted by hydrofluoropolyethers having the formula
- HF.sub.2 CO(CF.sub.2 O).sub.n (CF.sub.2 CF.sub.2 O).sub.m CF.sub.2 H
- wherein n and m are integers comprised between 0 and 20, excluding when m and n are contemporaneously 0 and having a boiling point between 30.degree. and 200.degree. C., and having an O/C molar ration between 0.5-1 and further comprising a propellant.
Extinguishing compositions according to claim 4 wherein the hydrofluorocarbon with extinguishing properties utilized as propellant is selected from hydroflourocarbon (HFC) with a boiling temperature lower than 0.degree. C.
A method for extinguishing a fire comprising contacting said fire with a composition comprising:
- hydrofluoropolyethers having the formula HF.sub.2 CO(CF.sub.2 O).sub.n (CF.sub.2 CF.sub.2 O).sub.m CF.sub.2 H wherein n and m are integers comprised between 0 and 20, excluding when m and n are contemporaneously 0 and having a boiling point between 30.degree. and 200.degree. C. and having an O/C molar ratio between 0.5-1.
Extinguishing compositions comprising a liquid extinguishing agent constituted by hydrofluoropolyethers having the formula
- HF.sub.2 CO(CF.sub.2 O).sub.n (CF.sub.2 CF.sub.2 O).sub.m CF.sub.2 H
- wherein n and m are integers comprised between 0 and 20, excluding when m and n are contemporaneously 0 and having a boiling point between 30.degree. and 200.degree. C., and having an O/C molar ration between 0.5-1 and further comprising a detoxifying agent.
Dependencies are inferred from the claim text.