CN102500086B - Fire-extinguishing agent and preparation method thereof - Google Patents
Fire-extinguishing agent and preparation method thereof Download PDFInfo
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- CN102500086B CN102500086B CN201110316520XA CN201110316520A CN102500086B CN 102500086 B CN102500086 B CN 102500086B CN 201110316520X A CN201110316520X A CN 201110316520XA CN 201110316520 A CN201110316520 A CN 201110316520A CN 102500086 B CN102500086 B CN 102500086B
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Abstract
The invention discloses a fire-extinguishing agent. The fire-extinguishing agent is prepared by uniformly mixing hydrophilic solid powder and water or an aqueous solution, adding hydrophobic solid particles and then carrying out mixing and dispersing, wherein the hydrophilic solid powder is one or more of magnesium hydroxide powder, aluminum oxide powder, aluminum hydroxide powder, magnesium carbonate powder, calcium carbonate powder, calcium hydroxide powder, zinc borate powder, montmorillonoid powder, hydrotalcite powder, hydrotalcite like compound powder, fly ash powder, diatomite powder, mica powder and attapulgite powder. The fire-extinguishing agent disclosed by the invention can exert stifling, cooling, separating and chemically restraining functions at the same time, and has the advantages of no toxicity, small environment pollution, high fire extinguishing efficiency and the like. According to the fire-extinguishing agent disclosed by the invention, the hydrophilic solid powder with a certain fire extinguishing performance and smaller solubility in water is added into a water phase so as to reduce the using amount of water-soluble substances, thus the cost of the fire-extinguishing agent is reduced when higher fire-extinguishing efficiency is kept, and the fire-extinguishing agent is easier to clean after being used for extinguishing fire.
Description
Technical field
The invention belongs to chemical technology field, be specifically related to a kind of extinguishing chemical and preparation method thereof.
Background technology
Water is as the extinguishing chemical that the most often uses, and its thermal characteristics makes it can be used for the fire extinguishing procedure of most of type fire.Yet because the mobility of water is very strong, under normal conditions, most of water that fire extinguishing is used also has little time to work just to have run off, and this has just caused the utilization rate of water fire extinguishing lower, and is easy to cause secondary loss.Chinese patent 201010605644.5 provides a kind of extinguishing chemical, this extinguishing chemical is by being strapped in water in the solid housing, effectively limited flowing freely of water, has certain accumulation, when reducing foamite amount, improving the fire extinguishing effect, the secondary disaster that while significantly having reduced fire extinguishing, water causes, but the extinguishing chemical in above-mentioned patent only using have certain extinguishing property the aqueous solution as base stock, and not using the solid hydrophilic powder with certain extinguishing property as active principle, cost is higher.
Summary of the invention
Technical problem to be solved by this invention is for above-mentioned the deficiencies in the prior art, provides a kind of nontoxic, and environmental pollution is little, the extinguishing chemical that fire-fighting efficiency is high.
for solving the problems of the technologies described above, the technical solution used in the present invention is: a kind of extinguishing chemical, it is characterized in that, and this extinguishing chemical adds the hydrophobic solid mix particles to disperse to form after by solid hydrophilic powder and water or the aqueous solution, being stirred again, described solid hydrophilic powder is one or more in magnesium hydroxide powder, alumina powder, aluminium-hydroxide powder, magnesium carbonate powder, calcium carbonate powder, calcium hydroxide powder, Firebrake ZB powder, imvite powder, hydrotalcite powder, houghite powder, flyash powder, diatomite powder, mica powder and concave convex rod powder, in the described aqueous solution, the mass concentration of solute is not more than 10%, in the described aqueous solution, solute is sodium acid carbonate, saleratus, potassium chloride, sodium chloride, potash, carbonic hydroammonium, urea, ammonium dihydrogen phosphate (ADP), NaOH, magnesium chloride, calcium chloride, potassium sulfate, ammonium citrate, a kind of in ammonium sulfate and APP, it is perhaps sodium acid carbonate, saleratus, potassium chloride, sodium chloride, potash, carbonic hydroammonium, urea, in NaOH and APP at least two kinds, be perhaps ammonium dihydrogen phosphate (ADP) and/or ammonium sulfate and potassium chloride, sodium chloride, magnesium chloride, the mixture of one or more in calcium chloride and APP, described hydrophobic solid particle is the solids after hydrophobically modified, described solids are one or more in magnesium hydroxide particles, silicon dioxide granule, calcium carbonate particle, talcum particle, aluminium oxide particles, aluminum hydroxide particles, Firebrake ZB particle, zinc oxide particle, di-iron trioxide particle, TiO 2 particles, imvite particle, hydrotalcite particle, houghite particle, flyash particle, diatomaceous earth particle, mica particle, concave convex rod particle and zeolite particles, the mass ratio of described solid hydrophilic powder and water or the aqueous solution is 0.01～0.25: 1, the mass ratio of described water or the aqueous solution and hydrophobic solid particle is 1～20: 1.
Above-mentioned a kind of extinguishing chemical, the contact angle of described hydrophobic solid particle are not less than 105 °.
The present invention also provides a kind of preparation method of extinguishing chemical, it is characterized in that, the method is: first that solid hydrophilic powder and water or aqueous solution dispersed with stirring is even, then in finely dispersed mixture, add the hydrophobic solid particle, in stir speed (S.S.), be to stir 5 seconds～450 seconds under the condition of 500 rev/mins～9000 rev/mins, obtain extinguishing chemical.
Solute and solid hydrophilic powder that violent chemical reaction can occur in the present invention do not advise using simultaneously.
The present invention compared with prior art has the following advantages: extinguishing chemical of the present invention bring into play simultaneously suffocate, cooling, isolation and organoselenocyanate, have nontoxicly, environmental pollution is little, the fire-fighting efficiency advantages of higher.With the Chinese patent that application number is 201010605644.5, compare, owing at aqueous phase, having added, has certain extinguishing property but solubility is less in water solid hydrophilic powder, reduced the consumption of water-soluble substances, when keeping higher fire-fighting efficiency, reduce the cost of extinguishing chemical, after fire extinguishing, also be easier to cleaning.
Below by embodiment, technical scheme of the present invention is described in further detail.
The specific embodiment
The hydrophobically modified method of solids of the present invention is for adopting silane coupler, titanate coupling agent or LCFA to improve the method for modifying commonly used such as inorganic solid particle hydrophobicity.
Embodiment 1
10 gram magnesium hydroxide powders are added in 1000 gram water and stir, then adding 1000 gram contact angles is the hydrophobic silica particle (through the silicon dioxide granule of titanate coupling agent hydrophobically modified) of 105 °, with the speed dispersed with stirring of 9000 rev/mins 5 seconds, obtain extinguishing chemical.
The extinguishing property of extinguishing chemical prepared by the present embodiment is suitable with the extinguishing chemical performance that the 1000 gram water that contain 10 gram sodium acid carbonates make, but cost is low by 15%, after fire extinguishing, also is easier to cleaning.
Embodiment 2
the present embodiment is identical with embodiment 1, wherein difference is: solid hydrophilic powder used is alumina powder, aluminium-hydroxide powder, the magnesium carbonate powder, calcium carbonate powder, the calcium hydroxide powder, the Firebrake ZB powder, the imvite powder, the hydrotalcite powder, the houghite powder, flyash powder, diatomite powder, mica powder or concave convex rod powder, it is perhaps magnesium hydroxide powder, alumina powder, aluminium-hydroxide powder, the magnesium carbonate powder, calcium carbonate powder, the calcium hydroxide powder, the Firebrake ZB powder, the imvite powder, the hydrotalcite powder, the houghite powder, flyash powder, diatomite powder, in mica powder and concave convex rod powder at least two kinds, solids used are magnesium hydroxide particles, silicon dioxide granule, calcium carbonate particle, the talcum particle, aluminium oxide particles, aluminum hydroxide particles, the Firebrake ZB particle, the zinc oxide particle, the di-iron trioxide particle, TiO 2 particles, the imvite particle, hydrotalcite particle, the houghite particle, the flyash particle, diatomaceous earth particle, mica particle, in concave convex rod particle and zeolite particles at least two kinds, it is perhaps magnesium hydroxide particles, calcium carbonate particle, the talcum particle, aluminium oxide particles, aluminum hydroxide particles, the Firebrake ZB particle, the zinc oxide particle, the di-iron trioxide particle, TiO 2 particles, the imvite particle, hydrotalcite particle, the houghite particle, the flyash particle, diatomaceous earth particle, mica particle, concave convex rod particle or zeolite particles.
Embodiment 3
250 gram magnesium carbonate powder are added in 1000 gram water and stir, then adding 50 gram contact angles is the hydrophobic silica particle (through the silicon dioxide granule of titanate coupling agent hydrophobically modified) of 110 °, with the speed dispersed with stirring of 500 rev/mins 450 seconds, obtain extinguishing chemical.
The extinguishing property of extinguishing chemical prepared by the present embodiment is suitable with the extinguishing chemical performance that the 1000 gram water that contain 200 gram sodium acid carbonates make, but cost is low by 10%, after fire extinguishing, also is easier to cleaning.
Embodiment 4
the present embodiment is identical with embodiment 3, wherein difference is: solid hydrophilic powder used is magnesium hydroxide powder, alumina powder, aluminium-hydroxide powder, calcium carbonate powder, the calcium hydroxide powder, the Firebrake ZB powder, the imvite powder, the hydrotalcite powder, the houghite powder, flyash powder, diatomite powder, mica powder or concave convex rod powder, it is perhaps magnesium hydroxide powder, alumina powder, aluminium-hydroxide powder, the magnesium carbonate powder, calcium carbonate powder, the calcium hydroxide powder, the Firebrake ZB powder, the imvite powder, the hydrotalcite powder, the houghite powder, flyash powder, diatomite powder, in mica powder and concave convex rod powder at least two kinds, solids used are magnesium hydroxide particles, silicon dioxide granule, calcium carbonate particle, the talcum particle, aluminium oxide particles, aluminum hydroxide particles, the Firebrake ZB particle, the zinc oxide particle, the di-iron trioxide particle, TiO 2 particles, the imvite particle, hydrotalcite particle, the houghite particle, the flyash particle, diatomaceous earth particle, mica particle, in concave convex rod particle and zeolite particles at least two kinds, it is perhaps magnesium hydroxide particles, calcium carbonate particle, the talcum particle, aluminium oxide particles, aluminum hydroxide particles, the Firebrake ZB particle, the zinc oxide particle, the di-iron trioxide particle, TiO 2 particles, the imvite particle, hydrotalcite particle, the houghite particle, the flyash particle, diatomaceous earth particle, mica particle, concave convex rod particle or zeolite particles.
Embodiment 5
It is to stir in 10% sodium bicarbonate aqueous solution that 100 gram magnesium carbonate powder are added to 1000 gram mass concentration, then adding 100 gram contact angles is the hydrophobic silica particle (through the silicon dioxide granule of titanate coupling agent hydrophobically modified) of 120 °, with the speed dispersed with stirring of 2000 rev/mins 100 seconds, obtain extinguishing chemical.
The extinguishing property of extinguishing chemical prepared by the present embodiment is suitable with the extinguishing chemical performance that the 1000 gram water that contain 200 gram sodium acid carbonates make, but cost is low by 6%, after fire extinguishing, also is easier to cleaning.
Embodiment 6
the present embodiment is identical with embodiment 5, wherein difference is: solid hydrophilic powder used is magnesium hydroxide powder, alumina powder, aluminium-hydroxide powder, calcium carbonate powder, the calcium hydroxide powder, the Firebrake ZB powder, the imvite powder, the hydrotalcite powder, the houghite powder, flyash powder, diatomite powder, mica powder or concave convex rod powder, it is perhaps magnesium hydroxide powder, alumina powder, aluminium-hydroxide powder, the magnesium carbonate powder, calcium carbonate powder, the calcium hydroxide powder, the Firebrake ZB powder, the imvite powder, the hydrotalcite powder, the houghite powder, flyash powder, diatomite powder, in mica powder and concave convex rod powder at least two kinds, solids used are magnesium hydroxide particles, silicon dioxide granule, calcium carbonate particle, the talcum particle, aluminium oxide particles, aluminum hydroxide particles, the Firebrake ZB particle, the zinc oxide particle, the di-iron trioxide particle, TiO 2 particles, the imvite particle, hydrotalcite particle, the houghite particle, the flyash particle, diatomaceous earth particle, mica particle, in concave convex rod particle and zeolite particles at least two kinds, it is perhaps magnesium hydroxide particles, calcium carbonate particle, the talcum particle, aluminium oxide particles, aluminum hydroxide particles, the Firebrake ZB particle, the zinc oxide particle, the di-iron trioxide particle, TiO 2 particles, the imvite particle, hydrotalcite particle, the houghite particle, the flyash particle, diatomaceous earth particle, mica particle, concave convex rod particle or zeolite particles, in the aqueous solution used, solute is saleratus, potassium chloride, sodium chloride, potash, carbonic hydroammonium, urea, ammonium dihydrogen phosphate (ADP), NaOH, magnesium chloride, calcium chloride, potassium sulfate, ammonium citrate, a kind of in ammonium sulfate and APP, it is perhaps sodium acid carbonate, saleratus, potassium chloride, sodium chloride, potash, carbonic hydroammonium, urea, in NaOH and APP at least two kinds, be perhaps ammonium dihydrogen phosphate (ADP) and/or ammonium sulfate and potassium chloride, sodium chloride, magnesium chloride, the mixture of one or more in calcium chloride and APP, solute and pressed powder that violent chemical reaction wherein can occur do not advise using simultaneously.
Embodiment 7
It is to stir in 8% ammonium sulfate solution that 120 gram alumina powders are added to 1000 gram mass concentration, then adding 80 gram contact angles is the hydrophobic silica particle (through the silicon dioxide granule of titanate coupling agent hydrophobically modified) of 105 °, with the speed dispersed with stirring of 3000 rev/mins 120 seconds, obtain extinguishing chemical.
The extinguishing property of extinguishing chemical prepared by the present embodiment is suitable with the extinguishing chemical performance that the 1000 gram water that contain 150 gram ammonium dihydrogen phosphate (ADP)s make, but cost is low by 10%, after fire extinguishing, also is easier to cleaning.
Embodiment 8
the present embodiment is identical with embodiment 7, wherein difference is: solid hydrophilic powder used is magnesium hydroxide powder, aluminium-hydroxide powder, the magnesium carbonate powder, calcium carbonate powder, the calcium hydroxide powder, the Firebrake ZB powder, the imvite powder, the hydrotalcite powder, the houghite powder, flyash powder, diatomite powder, mica powder or concave convex rod powder, it is perhaps magnesium hydroxide powder, alumina powder, aluminium-hydroxide powder, the magnesium carbonate powder, calcium carbonate powder, the calcium hydroxide powder, the Firebrake ZB powder, the imvite powder, the hydrotalcite powder, the houghite powder, flyash powder, diatomite powder, in mica powder and concave convex rod powder at least two kinds, solids used are magnesium hydroxide particles, silicon dioxide granule, calcium carbonate particle, the talcum particle, aluminium oxide particles, aluminum hydroxide particles, the Firebrake ZB particle, the zinc oxide particle, the di-iron trioxide particle, TiO 2 particles, the imvite particle, hydrotalcite particle, the houghite particle, the flyash particle, diatomaceous earth particle, mica particle, in concave convex rod particle and zeolite particles at least two kinds, it is perhaps magnesium hydroxide particles, calcium carbonate particle, the talcum particle, aluminium oxide particles, aluminum hydroxide particles, the Firebrake ZB particle, the zinc oxide particle, the di-iron trioxide particle, TiO 2 particles, the imvite particle, hydrotalcite particle, the houghite particle, the flyash particle, diatomaceous earth particle, mica particle, concave convex rod particle or zeolite particles, in the aqueous solution used, solute is sodium acid carbonate, saleratus, potassium chloride, sodium chloride, potash, carbonic hydroammonium, urea, ammonium dihydrogen phosphate (ADP), NaOH, magnesium chloride, calcium chloride, potassium sulfate, a kind of in ammonium citrate and APP, it is perhaps sodium acid carbonate, saleratus, potassium chloride, sodium chloride, potash, carbonic hydroammonium, urea, in NaOH and APP at least two kinds, be perhaps ammonium dihydrogen phosphate (ADP) and/or ammonium sulfate and potassium chloride, sodium chloride, magnesium chloride, the mixture of one or more in calcium chloride and APP, solute and pressed powder that violent chemical reaction wherein can occur do not advise using simultaneously.
Embodiment 9
100 gram alumina powders and 50 gram magnesium hydroxide powders are added in 1000 gram water and stir, then adding 50 gram contact angles is the hydrophobicity calcium carbonate particle (through the calcium carbonate particle of stearic acid hydrophobically modified) that the hydrophobic silica particle (through the silicon dioxide granule of titanate coupling agent hydrophobically modified) of 105 ° and 50 gram contact angles are 110 °, with the speed dispersed with stirring of 1000 rev/mins 300 seconds, obtain extinguishing chemical.
The extinguishing property of extinguishing chemical prepared by the present embodiment is suitable with the extinguishing chemical performance that the 1000 gram water that contain 100 gram ammonium dihydrogen phosphate (ADP)s make, but cost is low by 15%, after fire extinguishing, also is easier to cleaning.
Embodiment 10
100 gram aluminium-hydroxide powders and 100 gram Firebrake ZB powder are added in the mixed aqueous solution of 1000 gram ammonium dihydrogen phosphate (ADP)s (mass concentration is 5%) and ammonium sulfate (mass concentration is 3%) and stir, then adding 50 gram contact angles is the hydrophobicity TiO 2 particles (through the TiO 2 particles of silane coupler hydrophobically modified) that the hydrophobicity flyash particle (through the flyash particle of silane coupler hydrophobically modified) of 130 ° and 20 gram contact angles are 128 °, with the speed dispersed with stirring of 5000 rev/mins 100 seconds, obtain extinguishing chemical.
The extinguishing property of extinguishing chemical prepared by the present embodiment is suitable with the extinguishing chemical performance that the 1000 gram water that contain 100 gram ammonium dihydrogen phosphate (ADP)s make, but cost is low by 15%, after fire extinguishing, also is easier to cleaning.
Embodiment 11
by 10 gram alumina powders, 50 gram imvite powder and 10 gram Firebrake ZB powder add in the mixed aqueous solution of 1000 gram magnesium chlorides (mass concentration is 6%) and calcium chloride (mass concentration is 1%) and stir, then adding 500 gram contact angles is the hydrophobicity aluminum hydroxide particles (through the aluminum hydroxide particles of silane coupler hydrophobically modified) of 110 °, 10 gram contact angles are the hydrophobicity hydrotalcite particle (through the hydrotalcite particle of silane coupler hydrophobically modified) that the hydrophobicity Firebrake ZB particle (through the Firebrake ZB particle of silane coupler hydrophobically modified) of 135 ° and 10 gram contact angles are 122 °, with the speed dispersed with stirring of 5000 rev/mins 100 seconds, obtain extinguishing chemical.
The extinguishing property of extinguishing chemical prepared by the present embodiment is suitable with the extinguishing chemical performance that the 1000 gram water that contain 150 gram ammonium dihydrogen phosphate (ADP)s make, but cost is low by 12%, after fire extinguishing, also is easier to cleaning.
Embodiment 12
10 gram aluminium-hydroxide powders, 50 gram imvite powder and 10 gram Firebrake ZB powder are added in 1000 gram water and stir, then adding 500 gram contact angles is the hydrophobicity hydrotalcite particle (through the hydrotalcite particle of silane coupler hydrophobically modified) that the hydrophobicity aluminum hydroxide particles (through the aluminum hydroxide particles of silane coupler hydrophobically modified) of 110 °, hydrophobicity Firebrake ZB particle (through the Firebrake ZB particle of silane coupler hydrophobically modified) that 10 gram contact angles are 135 ° and 10 gram contact angles are 122 °, with the speed dispersed with stirring of 5000 rev/mins 100 seconds, obtain extinguishing chemical.
The extinguishing property of extinguishing chemical prepared by the present embodiment is suitable with the extinguishing chemical performance that the 1000 gram water that contain 120 gram ammonium dihydrogen phosphate (ADP)s make, but cost is low by 8%, after fire extinguishing, also is easier to cleaning.
Embodiment 13
100 gram aluminium-hydroxide powders and 100 gram Firebrake ZB powder are added in 1000 gram water and stir, then adding 50 gram contact angles is the hydrophobicity TiO 2 particles (through the TiO 2 particles of silane coupler hydrophobically modified) that the hydrophobicity flyash particle (through the flyash particle of silane coupler hydrophobically modified) of 130 ° and 20 gram contact angles are 128 °, with the speed dispersed with stirring of 5000 rev/mins 100 seconds, obtain extinguishing chemical.
The extinguishing property of extinguishing chemical prepared by the present embodiment is suitable with the extinguishing chemical performance that the 1000 gram water that contain 100 gram ammonium dihydrogen phosphate (ADP)s make, but cost is low by 16%, after fire extinguishing, also is easier to cleaning.
The above; it is only preferred embodiment of the present invention; not the present invention is imposed any restrictions, every any simple modification, change and equivalent structure of above embodiment being done according to the technology of the present invention essence changes, and all still belongs in the protection domain of technical solution of the present invention.
Claims (3)
1. an extinguishing chemical, is characterized in that, this extinguishing chemical adds the hydrophobic solid mix particles to disperse to form after by solid hydrophilic powder and water or the aqueous solution, being stirred again, described solid hydrophilic powder is one or more in magnesium hydroxide powder, alumina powder, aluminium-hydroxide powder, magnesium carbonate powder, calcium carbonate powder, calcium hydroxide powder, Firebrake ZB powder, imvite powder, hydrotalcite powder, houghite powder, flyash powder, diatomite powder, mica powder and concave convex rod powder, in the described aqueous solution, the mass concentration of solute is not more than 10%, in the described aqueous solution, solute is sodium acid carbonate, saleratus, potassium chloride, sodium chloride, potash, carbonic hydroammonium, urea, ammonium dihydrogen phosphate (ADP), NaOH, magnesium chloride, calcium chloride, potassium sulfate, ammonium citrate, a kind of in ammonium sulfate and APP, it is perhaps sodium acid carbonate, saleratus, potassium chloride, sodium chloride, potash, carbonic hydroammonium, urea, in NaOH and APP at least two kinds, be perhaps ammonium dihydrogen phosphate (ADP) and/or ammonium sulfate and potassium chloride, sodium chloride, magnesium chloride, the mixture of one or more in calcium chloride and APP, described hydrophobic solid particle is the solids after hydrophobically modified, described solids are one or more in magnesium hydroxide particles, silicon dioxide granule, calcium carbonate particle, talcum particle, aluminium oxide particles, aluminum hydroxide particles, Firebrake ZB particle, zinc oxide particle, di-iron trioxide particle, TiO 2 particles, imvite particle, hydrotalcite particle, houghite particle, flyash particle, diatomaceous earth particle, mica particle, concave convex rod particle and zeolite particles, the mass ratio of described solid hydrophilic powder and water or the aqueous solution is 0.01～0.25: 1, the mass ratio of described water or the aqueous solution and hydrophobic solid particle is 1～20: 1.
2. a kind of extinguishing chemical according to claim 1, is characterized in that, the contact angle of described hydrophobic solid particle is not less than 105 °.
3. one kind prepares the method for extinguishing chemical as claimed in claim 1, it is characterized in that, the method is: first that solid hydrophilic powder and water or aqueous solution dispersed with stirring is even, then in finely dispersed mixture, add the hydrophobic solid particle, in stir speed (S.S.), be to stir 5 seconds～450 seconds under the condition of 500 rev/mins～9000 rev/mins, obtain extinguishing chemical.
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| CN116474306A (en) * | 2023-05-26 | 2023-07-25 | 中国民航大学 | Cooling type dry powder extinguishing agent and preparation method and application thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1849420A (en) * | 2003-06-27 | 2006-10-18 | 罗狄亚化学公司 | Yarns, fibres and filaments made of synthetic, flame-resistant material |
| EP2201985A2 (en) * | 2007-06-29 | 2010-06-30 | Kidde IP Holdings Limited | Fire fighting foaming compositions |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102058951B (en) * | 2010-12-25 | 2012-02-22 | 西安科技大学 | Extinguishing agent |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1849420A (en) * | 2003-06-27 | 2006-10-18 | 罗狄亚化学公司 | Yarns, fibres and filaments made of synthetic, flame-resistant material |
| EP2201985A2 (en) * | 2007-06-29 | 2010-06-30 | Kidde IP Holdings Limited | Fire fighting foaming compositions |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2658055C1 (en) * | 2017-04-20 | 2018-06-19 | Общество с ограниченной ответственностью "ЦеоТрейдРесурс" | Multipurpose fire extinguishing powder |
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