FIRE-EXTINGUISHING COMPOSITION Russian patent published in 2004 - IPC

FIELD: fire-extinguishing equipment, particularly gas fire-extinguishing modules with separately charged gaseous and powder fire-extinguishing agents, also for single-unit fire extinguishers.

SUBSTANCE: fire-extinguishing composition comprises the main component in amount of 15-70 % by weight, flowability increasing target component, namely ion-lattice mineral with complex anionic groups of the following formula:

[Al₂O₃]_0.5-7.5·_{[SiO2]40-50·[Na2O· K2O]4.5-11.4·}

· [P₂O₅]_0.5-1.5·_{[CaO]5-9.1·[Fe2O3]12-20·[FeO]8-12·[TiO3]7-11·}

and/or phosphorite powder with real density of not less than 2.8 g/sm³ in amount of 4.6 - 25.0% by weight. Fire-extinguishing composition also includes methylhydridesiloxane with active hydrogen content of 1.6 - 1.7 % by weight or mixture of methylhydridesiloxane used as waterproofing base and curing agent, namely aminoethylaminopropyltrimetoxylane with ratio (5-70):1. Silicone waterproofing liquid, namely 10 - 70% solution thereof in organochlorine dissolvent is used as modifier. Composition additionally has liquefied and/or gaseous retarder and/or liquefied and/or gaseous fire inhibitor, namely azeotropic mixture of trifluoromethane and carbon dioxide in carbon dioxide/trifluoromethane ratio of (15-65):(35-85) or azeotropic mixture of trifluoromethane, exafluoroethane and carbon dioxide in the following ratios: (30-43):(33-43):(24-37) or mixture of carbon dioxide with nitrogen and argon in ratio of 8:52:40 or mixture of argon and nitrogen in the ratio of 50:50 or liquefied and/or gaseous carbon dioxide or nitrogen in amount of 1.7 - 79.8 %by weight.

EFFECT: increased volumetric fire-extinguishing capacity in the case of extinguishing classes A, B, C fires, improved flowability.

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