EP1370330A2 - Fire-extinguishing agent and impregnant material - Google Patents

Fire-extinguishing agent and impregnant material

Info

Publication number
EP1370330A2
EP1370330A2 EP02703391A EP02703391A EP1370330A2 EP 1370330 A2 EP1370330 A2 EP 1370330A2 EP 02703391 A EP02703391 A EP 02703391A EP 02703391 A EP02703391 A EP 02703391A EP 1370330 A2 EP1370330 A2 EP 1370330A2
Authority
EP
European Patent Office
Prior art keywords
fire
agent
citric acid
agent according
extinguishing agent
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP02703391A
Other languages
German (de)
French (fr)
Other versions
EP1370330B1 (en
Inventor
Franz Howorka
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of EP1370330A2 publication Critical patent/EP1370330A2/en
Application granted granted Critical
Publication of EP1370330B1 publication Critical patent/EP1370330B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62D—CHEMICAL MEANS FOR EXTINGUISHING FIRES OR FOR COMBATING OR PROTECTING AGAINST HARMFUL CHEMICAL AGENTS; CHEMICAL MATERIALS FOR USE IN BREATHING APPARATUS
    • A62D1/00—Fire-extinguishing compositions; Use of chemical substances in extinguishing fires
    • A62D1/0028—Liquid extinguishing substances
    • A62D1/0035—Aqueous solutions
    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62D—CHEMICAL MEANS FOR EXTINGUISHING FIRES OR FOR COMBATING OR PROTECTING AGAINST HARMFUL CHEMICAL AGENTS; CHEMICAL MATERIALS FOR USE IN BREATHING APPARATUS
    • A62D1/00—Fire-extinguishing compositions; Use of chemical substances in extinguishing fires
    • A62D1/0064—Gels; Film-forming compositions
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27K—PROCESSES, APPARATUS OR SELECTION OF SUBSTANCES FOR IMPREGNATING, STAINING, DYEING, BLEACHING OF WOOD OR SIMILAR MATERIALS, OR TREATING OF WOOD OR SIMILAR MATERIALS WITH PERMEANT LIQUIDS, NOT OTHERWISE PROVIDED FOR; CHEMICAL OR PHYSICAL TREATMENT OF CORK, CANE, REED, STRAW OR SIMILAR MATERIALS
    • B27K3/00—Impregnating wood, e.g. impregnation pretreatment, for example puncturing; Wood impregnation aids not directly involved in the impregnation process
    • B27K3/52—Impregnating agents containing mixtures of inorganic and organic compounds
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27K—PROCESSES, APPARATUS OR SELECTION OF SUBSTANCES FOR IMPREGNATING, STAINING, DYEING, BLEACHING OF WOOD OR SIMILAR MATERIALS, OR TREATING OF WOOD OR SIMILAR MATERIALS WITH PERMEANT LIQUIDS, NOT OTHERWISE PROVIDED FOR; CHEMICAL OR PHYSICAL TREATMENT OF CORK, CANE, REED, STRAW OR SIMILAR MATERIALS
    • B27K2240/00—Purpose of the treatment
    • B27K2240/30—Fireproofing

Definitions

  • the present invention relates to an agent which not only has a strong fire-extinguishing effect, but is also suitable for reducing the flammability of objects.
  • the contents of the fire extinguishing agent in question cover extinguished or non-inflamed objects of the fire source with a protective layer which prevents the fire from spreading further, but can be easily removed again after the fire has been extinguished.
  • Fire extinguishing agents with a simultaneous preventive effect have been disclosed in US Pat. No. 1,278,716, in which solutions of tertiary alkali metal citrate with alkali metal bicarbonate are proposed.
  • a suitable acid such as sulfuric acid or hydrochloric acid
  • the CO 2 necessary for spraying the agent is produced.
  • the resulting sulfates or chlorides form hard coatings on the sprayed objects after the water has evaporated, which can usually only be removed if these objects are damaged. The advantages of using this agent are thus significantly impaired.
  • EP 0 229 600 A1 discloses a fire extinguishing and impregnating agent which consists of citric acid dissolved in water and an equivalent amount of sodium and potassium.
  • the pH of the agent is adjusted slightly alkaline.
  • citric acid is comparatively poorly soluble under alkaline conditions, so that with the same potential fire load either a lower impregnation effect can be accepted or To achieve a comparable impregnation effect, more agents must be used, as will be explained.
  • this problem is not addressed in EP 0 229 600 AI; instead, attention is paid to the pH of the agent and measures for stabilizing it are proposed.
  • DE 557 771 discloses a fire extinguishing agent which, however, has no impregnation properties. Instead, it addresses the problem of lowering the freezing point of a carbonate solution used for fire-fighting purposes by using ethylene glycol.
  • DE 557 771 proposes to replace the sulfuric acid used according to the prior art by sulfonic acids, in particular chlorosulfonic acid
  • Alkali carbonates such as sodium carbonate, react with citric acid in contrast to equation 1 according to the following stoichometry:
  • Equation 2 it is when using alkali carbonates due to the reaction equilibrium in principle possible to form twice the amount of alkali metal citrates. So if the technical implementation of Equation 2 succeeds, this increases the fire protection effect significantly.
  • sodium carbonate it has better solubility in water than sodium hydrogen carbonate.
  • the relative solubility ratio of sodium carbonate to sodium bicarbonate varies, but can sometimes be 1: 2, such as at 60 ° C.
  • Better solubility in turn opens up the possibility of increasing the concentration or, with the absolute amount remaining the same, lower amounts of the solvent water.
  • Equation 2 shows that the increased yield of sodium citrate can only be achieved if large amounts of citric acid can be dissolved.
  • Citric acid is very 'highly soluble in water, but preferably under acidic conditions.
  • the presence of sodium carbonate creates an alkaline environment.
  • the advantages of the reaction according to equation 2 are invalid if, compared to equation 1, it is not possible to dissolve about twice the amounts of citric acid. It has now been found that this can be ensured by using ethylene glycol (1,2-ethanediol) without significantly impairing the reaction kinetics. The saturation concentration of citric acid can thus be increased.
  • the extinguishing agent according to the invention it is actually intended to mix the reactants sodium carbonate and citric acid until saturation is reached, so that increasing the saturation concentration is crucial.
  • ethylene glycol also shows that beneficial effect of lowering the freezing point. This is a major advantage for a fire extinguishing agent that must be reliably ready for use even at low temperatures.
  • the present invention provides a fire extinguishing agent that not only shows a significantly increased formation of a protective layer to reduce the flammability of objects of the fire source compared to known preparations, but is also characterized by a lower need for extinguishing water. This not only reduces water damage, but also facilitates transportation to the source of the fire due to the lower volume.
  • the agent according to the invention furthermore offers the possibility of further increasing the concentration of the ingredients by heating the solution, which ultimately leads to gelation of the agent. This means that larger quantities can be moved better when transporting the fire extinguishing agent. A dilution appropriate to the application can be carried out on site.
  • the fire extinguishing and impregnating agent according to the invention is suitable for flame retarding paper, cellulose, textiles, wood, plastics and much more. It is completely biodegradable and completely harmless to living beings and the environment.
  • the use of ethylene glycol also has the effect that the extinguishing agent according to the invention can be used without problems at temperatures well below zero and difficulties in storage, transport and use at low temperatures are avoided.

Abstract

The invention relates to an antifreeze fire-extinguishing agent, with a simultaneous action for reducing the flammability of objects. Said agent consists of an aqueous solution of alkali carbonate, citric acid and ethylene glycol.

Description

Feuerlösch- und Imprägnierungsmittel:Fire extinguishing and waterproofing agents:
Die gegenständliche Erfindung bezieht sich auf ein Mittel, welches nicht nur eine stark feuerlöschende Wirkung zeigt, sondern sich zusätzlich zur Herabsetzung der Entflammbarkeit von Gegenständen eignet. Die Inhaltsstoffe des gegenständlichen Feuerlöschmittels überziehen dabei gelöschte oder nicht-entflammte Gegenstände des Brandherdes mit einer Schutzschicht, die die weitere Ausbreitung des Feuers unterbindet, aber nach dem Löschen des Feuers wieder leicht entfernt werden kann.The present invention relates to an agent which not only has a strong fire-extinguishing effect, but is also suitable for reducing the flammability of objects. The contents of the fire extinguishing agent in question cover extinguished or non-inflamed objects of the fire source with a protective layer which prevents the fire from spreading further, but can be easily removed again after the fire has been extinguished.
Feuerlöschmittel mit gleichzeitiger Präventivwirkung wurden in US-PS 1 278 716 offenbart, bei denen Lösungen aus tertiären Alkali etallcitrat mit Alkalimetallhydrogencarbonat vorgeschlagen werden. Es ist allerdings weiters die Zugabe einer geeigneten Säure, etwa Schwefelsäure oder Salzsäure, vorgesehen, sodass das für die Versprühung des Mittels notwendige C02 entsteht. Die so entstandenen Sulfate oder Chloride bilden auf den besprühten Gegenständen nach dem Verdunsten des Wassers harte Überzüge, die meist nur unter Beschädigung dieser Gegenstände entfernt werden können. Die Vorteile eines Einsatzes dieses Mittels werden somit erheblich beeinträchtigt .Fire extinguishing agents with a simultaneous preventive effect have been disclosed in US Pat. No. 1,278,716, in which solutions of tertiary alkali metal citrate with alkali metal bicarbonate are proposed. However, the addition of a suitable acid, such as sulfuric acid or hydrochloric acid, is also provided, so that the CO 2 necessary for spraying the agent is produced. The resulting sulfates or chlorides form hard coatings on the sprayed objects after the water has evaporated, which can usually only be removed if these objects are damaged. The advantages of using this agent are thus significantly impaired.
EP 0 229 600 AI offenbart ein Feuerlösch- und Imprägniermittel, das aus in Wasser gelöster Zitronensäure und einer dazu äquimolaren Menge Natrium und Kalium besteht. Zusätzlich wird der pH-Wert des Mittels leicht alkalisch eingestellt. Unter alkalischen Bedingungen ist allerdings Zitronensäure vergleichsweise schlecht löslich, sodass bei gleicher potentieller Brandlast entweder niedrigere Imprägnierwirkung in Kauf genommen werden uss, oder zur Erzielung vergleichbarer Imprägnierwirkung mehr Mittel verwendet werden muss, wie noch ausgeführt werden wird. Dieses Problem wird in EP 0 229 600 AI allerdings nicht angesprochen, stattdessen wird der Augenmerk auf den pH-Wert des Mittels gesetzt und Maßnahmen zu dessen Stabilisierung vorgeschlagen.EP 0 229 600 A1 discloses a fire extinguishing and impregnating agent which consists of citric acid dissolved in water and an equivalent amount of sodium and potassium. In addition, the pH of the agent is adjusted slightly alkaline. However, citric acid is comparatively poorly soluble under alkaline conditions, so that with the same potential fire load either a lower impregnation effect can be accepted or To achieve a comparable impregnation effect, more agents must be used, as will be explained. However, this problem is not addressed in EP 0 229 600 AI; instead, attention is paid to the pH of the agent and measures for stabilizing it are proposed.
DE 557 771 offenbart ein Feuerlöschmittel, das aber über keinerlei Imprägniereigenschaften verfügt. Es bezieht sich stattdessen auf das Problem, den Gefrierpunkt einer für Feuerlöschzwecke verwendeten Carbonatlösung über Verwendung von Ethylenglykol zu senken. DE 557 771 schlägt dazu vor, die gemäß dem Stand der Technik verwendete Schwefelsäure durch Sulfonsäuren, insbesondere Chlorsulfonsäure, zu ersetzenDE 557 771 discloses a fire extinguishing agent which, however, has no impregnation properties. Instead, it addresses the problem of lowering the freezing point of a carbonate solution used for fire-fighting purposes by using ethylene glycol. DE 557 771 proposes to replace the sulfuric acid used according to the prior art by sulfonic acids, in particular chlorosulfonic acid
AT 369 995 und EP 059 178 AI versuchen diese Nachteile zu vermeiden, indem eine Lösung aus Alkalimetallcitrat vorgeschlagen wird, welche durch Vermischung eines Alkalihydrogencarbonats mit Zitronensäure (2-Hydroxy-l, 2, 3- propantricarbonsäure) in Wasser entsteht. Beim Versprühen mithilfe eines geeigneten Treibmittels vollzieht sich etwa bei der Verwendung von NaHC03 als Alkalihydrogencarbonat am Brandherd die Reaktion:AT 369 995 and EP 059 178 AI try to avoid these disadvantages by proposing a solution of alkali metal citrate which is formed by mixing an alkali metal bicarbonate with citric acid (2-hydroxy-l, 2,3-propane tricarboxylic acid) in water. When spraying with a suitable propellant, the reaction takes place when using NaHC0 3 as alkali hydrogen carbonate at the source of the fire:
Gl. 1: 3 NaHC03 + (cit)H3 -> Na3(cit) + 3 H20 + 3 C02 Eq. 1: 3 NaHC0 3 + (cit) H 3 -> Na 3 (cit) + 3 H 2 0 + 3 C0 2
wobei (cit)H3 für Zitronensäure und Na3(cit) für das entstehende Alkalimetallcitrat, in diesem Fall Natriumeitrat, stehen. Das C02 ist das entscheidende Reaktionsprodukt für die Flammerstickung. Das Natriumeitrat ist hingegen für die Bildung der vor Feuereinwirkung schützenden Schicht verantwortlich. In ähnlicher Weise offenbart DE 35 25 684 AI ein Feuerlösch- und Imprägniermittel, das Citrat, Kaliumhydroxid und Wasser oder Hydrogencarbonat und Zitronensäure enthält. Ein Löschmittel gemäß AT 369 995, EP 059 178 AI oder DE 35 25 684 AI, das lediglich ein Alkalihydrogencarbonat und Zitronensäure als Inhaltsstoffe aufweist, ist in der praktischen Anwendung jedoch problematisch. So hat sich etwa gezeigt, dass für einen wirksamen Überzug mit Natriumeitrat vergleichsweise große Mengen an Alkalihydrogencarbonat und Zitronensäure notwendig sind. Das bedingt auch den Einsatz entsprechender Wassermengen, was die Wahrscheinlichkeit von Wasserschäden wieder erhöht. Das Ziel, Gegenstände über eine Schutzschicht vor Flammeneinwirkung zu retten wird somit durch die Wahrscheinlichkeit eines Wasserschadens pervertiert. Weiters hat sich gezeigt, dass die Schutzschichtbildung bei kleinen, stark lokalisierten Brandherden zwar ausreichend ist, bei größeren und breitflächigen Brandherden allerdings rasch an die Grenze der Wirksamkeit stößt.where (cit) H 3 stands for citric acid and Na 3 (cit) for the resulting alkali metal citrate, in this case sodium citrate. The C0 2 is the crucial reaction product for flame embroidery. Sodium citrate, on the other hand, is responsible for the formation of the protective layer against fire. Similarly, DE 35 25 684 AI discloses a fire extinguishing and impregnating agent which contains citrate, potassium hydroxide and water or hydrogen carbonate and citric acid. An extinguishing agent according to AT 369 995, EP 059 178 AI or DE 35 25 684 AI, which only contains an alkali hydrogen carbonate and citric acid as ingredients, is problematic in practical use. It has been shown, for example, that comparatively large amounts of alkali hydrogen carbonate and citric acid are necessary for an effective coating with sodium citrate. This also requires the use of appropriate amounts of water, which increases the likelihood of water damage. The goal of saving objects from exposure to flame through a protective layer is thus perverted by the probability of water damage. Furthermore, it has been shown that the formation of a protective layer is sufficient for small, strongly localized sources of fire, but for larger and broad-based sources of fire it quickly reaches the limit of effectiveness.
Es ist somit Ziel der Erfindung, bei gleicher Löschwirkung eine verstärkte Schutzwirkung durch Natriumcitratbildung bei höherer Konzentration der Ausgangsstoffe im Löschmedium zu erreichen. Es ist somit auch Ziel der Erfindung, bei vergleichbarer Brand- und Imprägnierwirkung den Löschmittelbedarf zu senken und so für einen erleichterten Transport zum Brandherd zu sorgen.It is therefore the aim of the invention to achieve an increased protective effect by sodium citrate formation at a higher concentration of the starting materials in the extinguishing medium with the same extinguishing effect. It is therefore also the aim of the invention to reduce the need for extinguishing agents with a comparable fire and impregnation effect and thus to facilitate transport to the source of the fire.
Das wird durch die kennzeichnenden Merkmale von Anspruch 1 verwirklicht. Alkalicarbonate, etwa Natriumcarbonat, reagieren mit Zitronensäure im Unterschied zu Gleichung 1 gemäß folgender Stoichometrie:This is achieved by the characterizing features of claim 1. Alkali carbonates, such as sodium carbonate, react with citric acid in contrast to equation 1 according to the following stoichometry:
Gl. 2: 3 Na2C03 + 2 (cit)H3 -> 2 Na3(cit) + 3 H20 + 3 C02 Eq. 2: 3 Na 2 C0 3 + 2 (cit) H 3 -> 2 Na 3 (cit) + 3 H 2 0 + 3 C0 2
Wie sich somit zeigt, ist es bei der Verwendung von Alkalicarbonaten aufgrund des Reaktionsgleichgewichtes prinzipiell möglich, die doppelte Menge an Alkalimetallcitraten zu bilden. Wenn also die technische Umsetzung von Gleichung 2 gelingt, steigert dies die Feuerschutzwirkung entscheidend.As can be seen, it is when using alkali carbonates due to the reaction equilibrium in principle possible to form twice the amount of alkali metal citrates. So if the technical implementation of Equation 2 succeeds, this increases the fire protection effect significantly.
Zunächst zeigt sich ein weiterer Vorteil des Natriumcarbonats : Es weist eine gegenüber Natriumhydrogencarbonat bessere Löslichkeit in Wasser auf. Je nach Temperatur variiert das relative Verhältnis der Löslichkeit von Natriumcarbonat zu Natriumhydrogencarbonat, kann aber mitunter 1:2 betragen, wie etwa bei 60°C. Eine bessere Löslichkeit eröffnet wiederum die Möglichkeit der Konzentrationserhöhung oder, bei gleichbleibender Absolutmenge, geringere Mengen des Lösungsmittels Wasser.At first there is another advantage of sodium carbonate: it has better solubility in water than sodium hydrogen carbonate. Depending on the temperature, the relative solubility ratio of sodium carbonate to sodium bicarbonate varies, but can sometimes be 1: 2, such as at 60 ° C. Better solubility in turn opens up the possibility of increasing the concentration or, with the absolute amount remaining the same, lower amounts of the solvent water.
Allerdings zeigt die Stoichometrie von Gleichung 2 auch, dass die verstärkte Ausbeute an Natriumeitrat nur erzielt werden kann, wenn es gelingt, größere Mengen an Zitronensäure in Lösung zu bringen. Zitronensäure ist in Wasser sehr' gut löslich, allerdings bevorzugt unter sauren Bedingungen. Die Anwesenheit des Natriumcarbonats sorgt aber für alkalisches Milieu. Die Vorteile der Reaktion gemäß Gleichung 2 sind aber hinfällig, wenn es im Vergleich zu Gleichung 1 nicht gelingt, etwa die doppelten Mengen an Zitronensäure in Lösung zu bringen. Es hat sich nun herausgestellt, dass dies durch den Einsatz von Ethylenglykol (1, 2-Ethandiol) gewährleistet werden kann, ohne die Reaktionskinetik maßgeblich zu beeinträchtigen. Die Sättigungskonzentration der Zitronensäure kann somit gesteigert werden. Bei erfindungsgemäßem Löschmittel ist es auch tatsächlich vorgesehen, die Reaktionspartner Natriumcarbonat und Zitronensäure bis zur Sättigung zu mischen, sodass die Erhöhung der Sättigungskonzentration entscheidend ist. Ethylenglykol zeigt neben seiner Eigenschaften als Lösungsmittel in Wasser auch den vorteilhaften Effekt der Absenkung des Gefrierpunktes. Für ein Feuerlöschmittel, das auch bei tiefen Temperaturen zuverlässig einsatzbereit sein muss, ist das ein gewichtiger Vorteil.However, the stoichometry of Equation 2 also shows that the increased yield of sodium citrate can only be achieved if large amounts of citric acid can be dissolved. Citric acid is very 'highly soluble in water, but preferably under acidic conditions. However, the presence of sodium carbonate creates an alkaline environment. However, the advantages of the reaction according to equation 2 are invalid if, compared to equation 1, it is not possible to dissolve about twice the amounts of citric acid. It has now been found that this can be ensured by using ethylene glycol (1,2-ethanediol) without significantly impairing the reaction kinetics. The saturation concentration of citric acid can thus be increased. In the case of the extinguishing agent according to the invention, it is actually intended to mix the reactants sodium carbonate and citric acid until saturation is reached, so that increasing the saturation concentration is crucial. In addition to its properties as a solvent in water, ethylene glycol also shows that beneficial effect of lowering the freezing point. This is a major advantage for a fire extinguishing agent that must be reliably ready for use even at low temperatures.
Die zusätzliche Verwendung eines flüchtigen oder gasförmigen Treibmittels gemäß Anspruch 2 erleichtert schließlich den Einsatz des erfindungsgemäßen Feuerlöschmittels.Finally, the additional use of a volatile or gaseous propellant facilitates the use of the fire extinguishing agent according to the invention.
Somit wird durch gegenständliche Erfindung ein Feuerlöschmittel bereitgestellt, das gegenüber bekannten Präparaten nicht nur eine deutlich verstärkte Schutzschichtbildung zur Herabsetzung der Entflammbarkeit von Gegenständen des Brandherdes zeigt, sondern sich auch durch einen geringeren Bedarf an Löschwasser auszeichnet. Das bewirkt nicht nur die Verminderung von Wasserschäden, sondern auch erleichterten Transport zum Brandherd aufgrund des geringeren Volumens. Das erfindungsgemäße Mittel birgt weiters die Möglichkeit, durch Erwärmen der Lösung die Konzentration der Inhaltsstoffe weiter zu erhöhen, was letztendlich zur Gelatisierung des Mittels führt. Somit können beim Transport des Feuerlöschmittels größere Mengen besser bewegt werden. Am Einsatzort kann eine einsatzgerechte Verdünnung erfolgen.Thus, the present invention provides a fire extinguishing agent that not only shows a significantly increased formation of a protective layer to reduce the flammability of objects of the fire source compared to known preparations, but is also characterized by a lower need for extinguishing water. This not only reduces water damage, but also facilitates transportation to the source of the fire due to the lower volume. The agent according to the invention furthermore offers the possibility of further increasing the concentration of the ingredients by heating the solution, which ultimately leads to gelation of the agent. This means that larger quantities can be moved better when transporting the fire extinguishing agent. A dilution appropriate to the application can be carried out on site.
Das erfindungsgemäße Feuerlösch- und -Imprägnierungsmittel ist zur Flammfestmachung von Papier, Zellstoff, Textilien, Holz, Kunststoffen und vieles mehr geeignet. Es ist vollkommen biologisch abbaubar und für Lebewesen und Umwelt gänzlich ungefährlich. Die Verwendung des Ethylenglykols bewirkt ferner, dass das erfindungsgemäße Löschmittel bei Temperaturen weit unter Null problemlos eingesetzt werden kann und Schwierigkeiten bei Lagerung, Transport und Einsatz bei tiefen Temperaturen vermieden werden. The fire extinguishing and impregnating agent according to the invention is suitable for flame retarding paper, cellulose, textiles, wood, plastics and much more. It is completely biodegradable and completely harmless to living beings and the environment. The use of ethylene glycol also has the effect that the extinguishing agent according to the invention can be used without problems at temperatures well below zero and difficulties in storage, transport and use at low temperatures are avoided.

Claims

Patentansprüche : Claims:
Feuerlöschmittel mit gleichzeitiger Wirkung der Herabsetzung der Entflammbarkeit von Gegenständen, dadurch gekennzeichnet, dass es aus einer wässrigen Lösung besteht, die ein Alkalicarbonat, Zitronensäure sowie Ethylenglykol enthält.Fire extinguishing agent with the simultaneous effect of reducing the flammability of objects, characterized in that it consists of an aqueous solution containing an alkali carbonate, citric acid and ethylene glycol.
Mittel nach Anspruch 1, dadurch gekennzeichnet, dass es zusätzlich ein flüchtiges oder gasförmiges Treibmittel enthält .Agent according to claim 1, characterized in that it additionally contains a volatile or gaseous blowing agent.
Mittel nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass aufgrund einer Erwärmung der wässrigen Lösung die Inhaltsstoffe in erhöhter Konzentration vorliegen. Mittel nach Anspruch 3, dadurch gekennzeichnet, dass aufgrund einer Erwärmung der wässrigen Lösung das Mittel während des Transports zum Brandherd in gelatisierter Form vorliegt.Agent according to claim 1 or 2, characterized in that the ingredients are present in increased concentration due to heating of the aqueous solution. Agent according to claim 3, characterized in that due to heating of the aqueous solution, the agent is present in gelated form during transport to the source of the fire.
Mittel nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass Natriumcarbonat und Zitronensäure bis zur Sättigung gemischt sind. Agent according to one of claims 1 to 4, characterized in that sodium carbonate and citric acid are mixed until saturated.
EP02703391A 2001-03-13 2002-03-13 Fire-extinguishing agent and impregnation material Expired - Lifetime EP1370330B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
AT3932001 2001-03-13
AT3932001 2001-03-13
PCT/AT2002/000083 WO2002072204A2 (en) 2001-03-13 2002-03-13 Fire-extinguishing agent and impregnant material

Publications (2)

Publication Number Publication Date
EP1370330A2 true EP1370330A2 (en) 2003-12-17
EP1370330B1 EP1370330B1 (en) 2005-12-28

Family

ID=3673375

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02703391A Expired - Lifetime EP1370330B1 (en) 2001-03-13 2002-03-13 Fire-extinguishing agent and impregnation material

Country Status (8)

Country Link
US (1) US20040089456A1 (en)
EP (1) EP1370330B1 (en)
AT (2) ATE314118T1 (en)
CA (1) CA2440827A1 (en)
DE (1) DE50205439D1 (en)
ES (1) ES2256444T3 (en)
PT (1) PT1370330E (en)
WO (1) WO2002072204A2 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100457808B1 (en) * 2002-01-18 2004-11-18 주식회사 파이어앤텍 Environment-friendly neuter loaded stream extinguishant for general fire and method for preparing the same
WO2009041894A1 (en) * 2007-09-28 2009-04-02 Steamex Group Ab Method and device for producing a gaseous medium comprising steam

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3949812A (en) * 1974-11-12 1976-04-13 Hay George P Fire extinguishing system
AT369995B (en) * 1981-02-12 1983-02-25 Ragailler Franz MEANS FOR EXTINGUISHING FIRE AND AT THE SAME TIME TURNING THE FIRE OUTSIDE
DE3525684A1 (en) * 1985-07-18 1986-10-30 TOJ Produktions- und Handelsgesellschft für technische Produkte mbH, 8466 Bruck Firefighting composition for spraying
SE457145B (en) * 1985-11-05 1988-12-05 Harald Walter Schuler Means for extinguishing fires and for impregnating organic matter containing sodium and potassium citrate
US5091097A (en) * 1991-06-05 1992-02-25 Old Firehand Corporation Fire extinguishing and inhibiting material
US5489399A (en) * 1994-11-02 1996-02-06 Rengo Co., Ltd. Carbon dioxide gas generating compositions
US5945026A (en) * 1994-11-04 1999-08-31 Hazard Control Technologies, Inc. Composition and methods for firefighting hydrocarbon fires
KR20010074282A (en) * 2001-05-04 2001-08-04 현성호 A neutrality fortification liquid fire fighting drug for fire and production method

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO02072204A3 *

Also Published As

Publication number Publication date
WO2002072204A3 (en) 2002-11-28
EP1370330B1 (en) 2005-12-28
AT7169U1 (en) 2004-11-25
WO2002072204A2 (en) 2002-09-19
DE50205439D1 (en) 2006-02-02
CA2440827A1 (en) 2002-09-19
PT1370330E (en) 2006-05-31
US20040089456A1 (en) 2004-05-13
ES2256444T3 (en) 2006-07-16
ATE314118T1 (en) 2006-01-15

Similar Documents

Publication Publication Date Title
DE2933432B2 (en) Foam-like fire extinguishing agent for hydrophilic, flammable liquids
DE1117547B (en) Automatically sprayable mixture from a container with formation of aerosols
EP0277116B1 (en) Product for fire control and fireproofing impregnation
CH652027A5 (en) DERMATOLOGICAL PREPARATION FOR TREATING SKIN LESIONS.
DE1467806A1 (en) Deodorant
EP1370330B1 (en) Fire-extinguishing agent and impregnation material
DE3406322A1 (en) STABILIZED, WATER-CONTAINING, ALKALINE-SET SODIUM DITHIONITE PREPARATIONS
DE2603643A1 (en) FUNGICID
DE2104061A1 (en) Fire fighting method and composition for use in fire fighting
DE1926068C3 (en) Cosmetic center L.
DE1086665B (en) Process to reduce the escape of chlorine dioxide from acidic chlorite baths or chlorine dioxide solutions
DE3442800A1 (en) STABILIZED FUNGICIDES BASED ON ALUMINUM FOSETYL AND A COPPER-BASED PRODUCT
DE2155778A1 (en) Antiperspirant aerosol containing aluminum sulfamate
DE962650C (en) Process for the production of flame retardant polystyrene
CN117730857A (en) Beta-cyclodextrin coated tebuconazole metal complex mildew inhibitor and preparation method thereof
DE585926C (en) Treatment of dry powder powder
AT10015B (en) Agent against fungal growth on masonry, wood and other materials.
DE660692C (en) Process for safe and manageable use of bromine
AT152284B (en) Method for preparing fur or the like for felting.
DE545254C (en) Dry stain
DE834009C (en) Process for impregnating wood
AT223044B (en) Dry chemical powder
DE102020111465A1 (en) Disinfectant and method for producing a disinfectant
DE102020111466A1 (en) Disinfectant and method for producing a disinfectant
CH259609A (en) Process for achieving a foam, wetting, emulsifying and dispersing effect.

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20031013

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR

AX Request for extension of the european patent

Extension state: AL LT LV MK RO SI

17Q First examination report despatched

Effective date: 20050512

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

RTI1 Title (correction)

Free format text: FIRE-EXTINGUISHING AGENT AND IMPREGNATION MATERIAL

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR

AX Request for extension of the european patent

Extension state: AL LT LV MK RO SI

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20051228

Ref country code: NL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20051228

Ref country code: FI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20051228

Ref country code: IE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20051228

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

Free format text: LANGUAGE OF EP DOCUMENT: GERMAN

REF Corresponds to:

Ref document number: 50205439

Country of ref document: DE

Date of ref document: 20060202

Kind code of ref document: P

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20060313

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20060328

Ref country code: DK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20060328

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20060331

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20060331

Ref country code: MC

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20060331

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20060331

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20060331

REG Reference to a national code

Ref country code: GR

Ref legal event code: EP

Ref document number: 20060401136

Country of ref document: GR

REG Reference to a national code

Ref country code: PT

Ref legal event code: SC4A

Effective date: 20060327

NLV1 Nl: lapsed or annulled due to failure to fulfill the requirements of art. 29p and 29m of the patents act
LTIE Lt: invalidation of european patent or patent extension

Effective date: 20051228

REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2256444

Country of ref document: ES

Kind code of ref document: T3

GBV Gb: ep patent (uk) treated as always having been void in accordance with gb section 77(7)/1977 [no translation filed]

Effective date: 20051228

REG Reference to a national code

Ref country code: IE

Ref legal event code: FD4D

ET Fr: translation filed
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

26N No opposition filed

Effective date: 20060929

BERE Be: lapsed

Owner name: HOWORKA, FRANZ

Effective date: 20060331

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CY

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20051228

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: PT

Payment date: 20090310

Year of fee payment: 8

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GR

Payment date: 20090331

Year of fee payment: 8

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20090429

Year of fee payment: 8

Ref country code: TR

Payment date: 20090311

Year of fee payment: 8

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: ES

Payment date: 20100422

Year of fee payment: 9

Ref country code: FR

Payment date: 20100416

Year of fee payment: 9

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: IT

Payment date: 20100330

Year of fee payment: 9

REG Reference to a national code

Ref country code: PT

Ref legal event code: MM4A

Free format text: LAPSE DUE TO NON-PAYMENT OF FEES

Effective date: 20100913

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: PT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20100913

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20101001

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20101004

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20111130

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20110331

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20110313

REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 20120424

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: ES

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20110314

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: TR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20100313