EP0300070A1 - Foam fire-extinguishing agents - Google Patents

Foam fire-extinguishing agents Download PDF

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Publication number
EP0300070A1
EP0300070A1 EP87110532A EP87110532A EP0300070A1 EP 0300070 A1 EP0300070 A1 EP 0300070A1 EP 87110532 A EP87110532 A EP 87110532A EP 87110532 A EP87110532 A EP 87110532A EP 0300070 A1 EP0300070 A1 EP 0300070A1
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EP
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Prior art keywords
foam
fire extinguishing
forming component
fatty alcohol
glycol
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EP87110532A
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German (de)
French (fr)
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EP0300070B2 (en
EP0300070B1 (en
Inventor
Peter Brix
Hans-Joachim Kersting
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FABRIK CHEMISCHER PRAPARATE VON DR RICHARD STHAMER
CHEMISCHER PRAPARATE VON DR RI
Fabrik Chemischer Praparate Von Dr Richard Sthamer
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FABRIK CHEMISCHER PRAPARATE VON DR RICHARD STHAMER
CHEMISCHER PRAPARATE VON DR RI
Fabrik Chemischer Praparate Von Dr Richard Sthamer
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Priority to EP87110532A priority Critical patent/EP0300070B2/en
Priority to ES198787110532T priority patent/ES2031094T3/en
Priority to AT87110532T priority patent/ATE75960T1/en
Priority to DE8787110532T priority patent/DE3779121D1/en
Application filed by FABRIK CHEMISCHER PRAPARATE VON DR RICHARD STHAMER, CHEMISCHER PRAPARATE VON DR RI, Fabrik Chemischer Praparate Von Dr Richard Sthamer filed Critical FABRIK CHEMISCHER PRAPARATE VON DR RICHARD STHAMER
Publication of EP0300070A1 publication Critical patent/EP0300070A1/en
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Priority to GR920400803T priority patent/GR3004598T3/en
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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
    • A62D1/0071—Foams

Definitions

  • the invention relates to a foam-forming component for fire-extinguishing foam compositions and to a fire-extinguishing foam composition containing the foam-forming component.
  • fire extinguishing foam agents which consists of a foam-forming component, an anti-freeze component, possibly a foam stabilizer and a solvent, such as Water exist and in which a highly effective shielding of the oxygen supply to the fire object is achieved on the basis of proteins or surfactants.
  • Hydrolysed proteins are used as foaming agents e.g. Protein hydrolyzates, possibly combined with fluorosurfactants or surfactants used at all. Wildfires can also be fought alone with water film-forming foaming agents (AFFF).
  • the foaming agents are added in amounts of about 2% to 6% to the extinguishing water, which forms the foam mechanically when mixed with air.
  • fire extinguishing foam agents and foaming compositions which are also suitable for use as fire extinguishing agents and others. are provided, serve to increase the stability of the foam produced and serve to support foam formation.
  • the invention is therefore based on the object of providing an improved fire extinguishing foam agent which has very good compatibility with a wide variety of polymer film formers which are otherwise incompatible with conventional surfactants and which enables the incorporation of a wide variety of antifreeze agents, while at the same time achieving improved seawater resistance Should, so that the fire extinguishing foam agent can also be used in the event of polar liquid fires and water-miscible hydrocarbons at sea. Furthermore, the suction behavior at low temperatures is to be achieved in addition to an improvement in the stability of the foam against acids and alkalis.
  • alkyl polyglycoside as a foam-forming component in a fire extinguishing foam agent achieves significant improvements in fire extinguishing foam agents. These advantages are given by the good compatibility of the alkyl polyglycoside with various polymer film formers, which are not compatible with conventional surfactants, and also by the possibility of incorporating various antifreeze agents.
  • a fire extinguishing foam agent which, as the foam-forming component, is an alkyl polyglycoside of the formula where n is an integer from 2 to 10 and R represents the remainder of a fatty alcohol having 6 to 12 carbon atoms, which has the advantages indicated above, it being possible to incorporate the various known antifreeze agents into the fire extinguishing foam agent without the excellent Effect of the fire extinguishing foam agent is impaired in any way, and there is also the good compatibility of this foam-forming component with water film and polymer film formers, so that foams can be formed, the stability and fine bubbles are not impaired.
  • the fire extinguishing foam composition is composed as follows: Alkyl polyglycoside 8-30%, preferably 15% Polysaccharide 0.3-1.5%, preferably 0.5% Fluorosurfactant 1-7%, preferably 3% Water, made up to 100%, preferably 47.5% Antifreeze amount depending on the desired frost resistance 5-35% the alkyl polyglycoside can be used alone or mixed with other surfactants.
  • the propylene glycol n-butyl ether and / or di-propylene glycol butyl ether can also be added to any known fire extinguishing foam agent.
  • the invention relates to a fire extinguishing foam agent, which is composed in a manner known per se, that as a foam booster and antifreeze Propylene glycol n-butyl ether or di-propylene glycol butyl ether is added alone or as a mixture.
  • a fire extinguishing foam agent can be an alkyl polyglycoside of the formula as a foam-forming component where n is an integer from 2 to 10 and R is the remainder of a fatty alcohol having 6 to 12 carbon atoms, in particular a fatty alcohol from the group of primary fatty alcohols.

Abstract

Foam-forming component for fire-extinguishing agents which consists of an alkylpolyglycoside of the formula <IMAGE> wherein n is an integer of from 2 to 10 and R is the radical of a fatty alcohol having 6 to 12 C atoms, in particular a fatty alcohol from the group consisting of the primary fatty alcohols.

Description

Die Erfindung betrifft eine schaumbildende Komponente für Feuerlöschschaummittel und ein die schaumbildende Komponente enthaltendes Feuerlöschschaummittel.The invention relates to a foam-forming component for fire-extinguishing foam compositions and to a fire-extinguishing foam composition containing the foam-forming component.

Zum Löschen von Bränden ist u.a. auch der Einsatz von Feuerlöschschaummitteln bekannt, die aus einer schaum­bildenden Komponente, einer Frostschutzkomponente, ggf. einem Schaumstabilisator und einem Lösungsmittel, wie z.B. Wasser bestehen und bei denen auf der Basis von Proteinen oder Tensiden eine höchst wirksame Abschirmung der Sauerstoffzufuhr zum Brandobjekt er­reicht wird. Als Schaumbildner werden hydrolisierte Proteine z.B. Eiweißhydrolisate, evtl. kombiniert mit Fluortensiden oder Tensiden überhaupt verwendet. Flächenbrände können auch allein mit wasserfilmbilden­den Schaumbildnern (AFFF) bekämpft werden. Die Schaum­bildner werden in Mengen von etwa 2 % bis 6 % dem Löschwasser zugesetzt, das durch Vermischung mit Luft den Schaum auf mechanischem Wege bildet.To extinguish fires the use of fire extinguishing foam agents is also known, which consists of a foam-forming component, an anti-freeze component, possibly a foam stabilizer and a solvent, such as Water exist and in which a highly effective shielding of the oxygen supply to the fire object is achieved on the basis of proteins or surfactants. Hydrolysed proteins are used as foaming agents e.g. Protein hydrolyzates, possibly combined with fluorosurfactants or surfactants used at all. Wildfires can also be fought alone with water film-forming foaming agents (AFFF). The foaming agents are added in amounts of about 2% to 6% to the extinguishing water, which forms the foam mechanically when mixed with air.

Durch die EP-A-0120092 ist ein oberflächenaktives Agens und ein organisches Lösungsmittel enthaltendes Feuer­löschschaummittel bekannt, das

  • (a) 0,3 bis 15 Gew.-% mindestens einer Verbindung der Formel
    Figure imgb0001
     worin R¹ und R² gleich oder verschieden sind und jeweils darstellen ein Wasserstoffatom, eine Alkyl- oder Alkoxy-gruppe mit 1 bis 3 Kohlenstoffatomen, l die Zahl 0 oder 1 bedeutet und m und n eine ganze Zahl von 1 bis 3 darstellen, mit der Maßgabe, daß dann wenn R¹ und R² Alkoxy bedeuten, m und n die Zahl 1 darstellen;
  • (b) 1 bis 30 Gew.-% eines oberflächenaktiven Agens;
  • (c) 0,5 bis 20 Gew.-% mindestens eines Vertreters, der ausgewählt wird aus der Gruppe aliphatischer Monohydro­xyalkohol, aliphatischer Polyhydroxyalkohol, Glycoläther und Ethylencarbonat und/oder 0,1 bis 5 Gew.-% eines wasserlöslichen Polymeren;
  • (d) 2 bis 30 Gew.% eines polaren organischen Lösungs­mittels, das ein gutes Lösungsmittel für die Komponente (a) ist; und
  • (e) mindestens 50 Gew.-% Wasser, enthält.
From EP-A-0120092 a surface active agent and an organic solvent containing fire extinguishing foam agent is known which
  • (a) 0.3 to 15% by weight of at least one compound of the formula
    Figure imgb0001
     wherein R¹ and R² are the same or different and each represents a hydrogen atom, an alkyl or alkoxy group having 1 to 3 carbon atoms, l represents the number 0 or 1 and m and n represent an integer from 1 to 3, with the proviso that when R¹ and R² are alkoxy, m and n represent the number 1;
  • (b) 1 to 30% by weight of a surfactant;
  • (c) 0.5 to 20% by weight of at least one representative selected from the group consisting of aliphatic monohydroxy alcohol, aliphatic polyhydroxy alcohol, glycol ether and ethylene carbonate and / or 0.1 to 5% by weight of a water-soluble polymer;
  • (d) 2 to 30% by weight of a polar organic solvent which is a good solvent for component (a); and
  • (e) contains at least 50% by weight of water.

Ferner ist durch die EP-A-0070076 eine schäumende Zu­sammensetzung bekannt, die

  • (1) ein Alkylpolysaccharid-grenzflächenaktives Mittel der Formel
          RO(R¹O)tZx,
    worin Z ein von einem reduzierenden, 5 bis 6 Kohlen­stoffatome enthaltenden Saccharid abgeleiteter Rest ist; R eine hydrophobe Gruppe, ausgewählt aus der aus Alkyl-, Alkylphenylgruppen, und Mischungen davon, be­stehenden Gruppe, ist, in welcher die genannten Alkyl­gruppen 8 bis 18 Kohlenstoffatome enthalten, wobei die genannte Alkylgruppe entweder gesättigt oder ungesättigt ist und 0 bis 3 Hydroxygruppen enthält; R¹ Ethylen, Propylen und/oder Glyceryl ist; t 0 bis 30 ist, und x eine Zahl von 1,5 bis 10 ist;
  • (2) ein anionisches, co-grenzflächenaktives Mittel, aus­gewählt aus der Gruppe, die aus mit einem oder mehreren kationischen Resten neutralisierten Sulfaten, Sulfonaten, Carboxylaten, und Mischungen davon, besteht, wobei das Gewichtsverhältnis von (2) zu (1) 1 : 10 beträgt; und
  • (3) 2 Gew.-% bis 10 Gew.-% eines Hilfsschaumverstärkers, ausgewählt aus der Gruppe, die aus:
    • (a) Amiden der Formel
      Figure imgb0002
       worin R⁷ eine 8 bis 18 Kohlenstoffatome enthaltende Alkylgruppe ist, und jeder Rest R⁸ gleich oder vom anderen verschieden ist und aus der Gruppe ausgewählt ist, die aus Wasserstoff, C1-3-Alkyl-, C1-3-Alkanol- ­und -(C₂H₄O-)1-4H-gruppen, und Mischungen davon, besteht;
    • (b) Aminoxiden der Formel
      Figure imgb0003
       worin R⁴ eine 8 bis 18 Kohlenstoffatome enthaltende Alkylgruppe ist, jeder Rest R⁵ Ethylen oder Propylen ist, b 0 bis 30 ist, jeder Rest R⁶ gleich oder vom anderen verschieden ist und aus der Gruppe ausgewählt ist, die aus C1-3Alkyl-, C1-3-Alkanol- und -(C₂H₄O)1-6H-Gruppen, und Mischungen davon, besteht; und
    • (c) Mischungen davon, besteht, enthält.
Furthermore, EP-A-0070076 discloses a foaming composition which
  • (1) an alkyl polysaccharide surfactant of the formula
    RO (R¹O) t Z x ,
    wherein Z is a residue derived from a reducing saccharide containing 5 to 6 carbon atoms; R is a hydrophobic group selected from the group consisting of alkyl, alkylphenyl groups, and mixtures thereof, in which said alkyl groups contain 8 to 18 carbon atoms, said alkyl group being either saturated or unsaturated and containing 0 to 3 hydroxy groups; R1 is ethylene, propylene and / or glyceryl; t is 0 to 30 and x is a number from 1.5 to 10;
  • (2) an anionic, co-surfactant selected from the group consisting of sulfates, sulfonates, carboxylates, and mixtures thereof neutralized with one or more cationic residues, the weight ratio of (2) to (1) 1: Is 10; and
  • (3) 2% to 10% by weight of an auxiliary foam booster selected from the group consisting of:
    • (a) Amides of the formula
      Figure imgb0002
       wherein R⁷ is an alkyl group containing 8 to 18 carbon atoms, and each R⁸ is the same or different and is selected from the group consisting of hydrogen, C 1-3 alkyl, C 1-3 alkanol and - ( C₂H₄O-) 1-4 H groups, and mixtures thereof;
    • (b) Amine oxides of the formula
      Figure imgb0003
       wherein R⁴ is an alkyl group containing 8 to 18 carbon atoms, each R⁵ is ethylene or propylene, b is 0 to 30, each R⁶ is the same or different and is selected from the group consisting of C 1-3 alkyl, C 1-3 alkanol and - (C₂H₄O) 1-6 H groups, and mixtures thereof; and
    • (c) Mixtures thereof, contains.

Eine weitere schäumende Zusammensetzung ist durch die EP-A-0070075 bekannt. Diese schäumende Zusammensetzung enthält:

  • (1) ein Alkylpolysaccharid - grenzflächenaktives Mittel der Formel
          RO(R¹O)tZx,
    worin Z ein von einem reduzierenden, 5-6 Kohlenstoff­atome enthaltenden Saccharid abgeleiteter Rest ist; R eine hydrophobe Gruppe ist, die aus der aus Alkyl-, Alkylphenylgruppen, und Mischungen davon, bestehenden Gruppe ausgewählt ist, in welcher die genannten Alkyl­gruppen 8 bis 18 Kohlenstoffatome enthalten, wobei die Alkylgruppe entweder gesättigt oder ungesättigt ist und 0 bis 3 Hydroxygruppen enthält; R¹ Ethylen, Propylen und/oder Glyceryl ist; t 0 bis 30 ist; und x eine Zahl von 1,5 bis 10 ist;und
  • (2) ein Gemisch von mit einem oder mehreren kationischen Resten neutralisierten anionischen co-grenzflächenaktiven Mitteln, das im wesentlichen aus:
    • (a) 1 Gew.-% bis 95 Gew.-% eines wasserlöslichen Alkyl­benzolsulfonats, in welchem die Alkylgruppe 10 bis 13 Kohlenstoffatome enthält, und
    • (b) 5 Gew.-% bis 99g Gew.-% eines co-grenzflächenaktiven Mittels, ausgewählt aus der Gruppe, bestehend aus einem Alkylglycerylethersulfonat, in welchem die Alkylgruppe 8 bis 18 Kohlenstoffatome enthält, einem a-Olefinsulfonat, in welchem die Olefingruppe 10 bis 18 Kohlenstoffatome enthält, einem Alkylpolyethoxylatcarboxylat, in welchem die Alkylgruppe 10 bis 18 Kohlenstoffatome enthält, und die Polyethoxylatkette 2 bis 6 Ethoxylatgruppen enthält, und Mischungen davon, besteht.
Another foaming composition is known from EP-A-0070075. This foaming composition contains:
  • (1) an alkyl polysaccharide surfactant of the formula
    RO (R¹O) t Z x ,
    wherein Z is a residue derived from a reducing saccharide containing 5-6 carbon atoms; R is a hydrophobic group selected from the group consisting of alkyl, alkylphenyl groups, and mixtures thereof, in which said alkyl groups contain 8 to 18 carbon atoms, the alkyl group being either saturated or unsaturated and containing 0 to 3 hydroxy groups; R1 is ethylene, propylene and / or glyceryl; t is 0 to 30; and x is a number from 1.5 to 10;
  • (2) a mixture of anionic co-surfactants neutralized with one or more cationic residues, consisting essentially of:
    • (a) 1% to 95% by weight of a water-soluble alkylbenzenesulfonate in which the alkyl group contains 10 to 13 carbon atoms, and
    • (b) 5% to 99g% by weight of a co-surfactant selected from the group consisting of an alkyl glyceryl ether sulfonate in which the alkyl group contains 8 to 18 carbon atoms, an α-olefin sulfonate in which the olefin group 10 contains up to 18 carbon atoms, an alkyl polyethoxylate carboxylate in which the alkyl group contains 10 to 18 carbon atoms and the polyethoxylate chain contains 2 to 6 ethoxylate groups, and mixtures thereof.

Diese bekannten Feuerlöschschaummittel und schäumende Zusammensetzungen, die ebenfalls für den Einsatz als Feuerlöschmittel u.a. vorgesehen sind, dienen zur Er­höhung der Stabilität des erzeugten Schaumes und dienen zur Unterstützung der Schaumbildung.These well-known fire extinguishing foam agents and foaming compositions, which are also suitable for use as fire extinguishing agents and others. are provided, serve to increase the stability of the foam produced and serve to support foam formation.

Der Erfindung liegt daher die Aufgabe zugrunde, ein verbessertes Feuerlöschschaummittel zu schaffen, das eine sehr gute Verträglichkeit mit den verschiedensten Polymerfilmbildnern, die sonst mit herkömmlichen Tensiden nicht verträglich sind, hat und das das Einarbeiten der verschiedensten Frostschutzmittel ermöglicht, wobei gleichzeitig eine verbesserte Seewasserbeständigkeit erreicht werden soll, so daß das Feuerlöschschaummittel auch bei Bränden polarer Flüssigkeiten sowie sich mit Wasser mischbaren Kohlenwasserstoffen auf See einsetzbar ist. Des weiteren soll das Ansaugverhalten bei tiefen Tem­peraturen neben einer Stabilitätsverbesserung des Schaumes gegenüber Säuren und Alkalien erreicht werden.The invention is therefore based on the object of providing an improved fire extinguishing foam agent which has very good compatibility with a wide variety of polymer film formers which are otherwise incompatible with conventional surfactants and which enables the incorporation of a wide variety of antifreeze agents, while at the same time achieving improved seawater resistance Should, so that the fire extinguishing foam agent can also be used in the event of polar liquid fires and water-miscible hydrocarbons at sea. Furthermore, the suction behavior at low temperatures is to be achieved in addition to an improvement in the stability of the foam against acids and alkalis.

Diese Aufgabe wird durch ein Feuerlöschschaummittel mit den durch die im Patentanspruch 1 gekennzeichneten Merk­male gelöst.This object is achieved by a fire extinguishing foam agent with the features characterized in claim 1.

Durch die Verwendung eines Alkylpolyglycosides als schaumbildende Komponente in einem Feuerlöschschaummittel werden wesentliche Verbesserungen an Feuerlöschschaum­mitteln erreicht. Diese Vorteile sind gegeben durch die gute Verträglichkeit des Alkylpolyglycosides mit diversen Polymerfilmbildnern, die mit herkömmlichen Tensiden nicht verträglich sind, und ferner durch die Möglichkeit, verschiedene Frostschutzmittel mit einzuarbeiten. Gegen­über den herkömmlichen Feuerlöschschaummitteln werden noch folgende Vorteile erzielt:
    - Erhöhung der Seewasserbeständigkeit und somit Verträg­lichkeit der schaumbildenden Komponente bei Verwendung von Seewasser im Löscheinsatz;
    - wesentliche Erweiterung der Anzahl der zu löschenden, schaumzerstörenden Flüssigkeiten;
    - Verbesserung des Ansaugverhaltens, insbesondere bei tiefen Temperaturen
a) durch Viskositätserniedrigung (Verringerung des Polymerfilmbildners)
b) Verbesserung des pseudoplastischen (strukturviskosen) Verhaltens;
    - Verbesserung der Alterungsbeständigkeit, speziell bei extremen Temperaturen sowie der Gefrier- und Auftau­stabilität;
    - Verbesserung der Hitzebeständigkeit des Konzentrats;
    - Verbesserung des Korrosionsverhaltens;
    - Erhöhung der Stabilität des Schaumes gegenüber Säuren und Alkalien, was besonders vorteilhaft zur Emissions­minderung bei Abdeckung ausgelaufener Chemikalien ist;
    - erhebliche Minderung der Fisch- und Bakterientoxizität;
    - Einsparung von zusätzlichen Tensiden und Schaumstabili­satoren.The use of an alkyl polyglycoside as a foam-forming component in a fire extinguishing foam agent achieves significant improvements in fire extinguishing foam agents. These advantages are given by the good compatibility of the alkyl polyglycoside with various polymer film formers, which are not compatible with conventional surfactants, and also by the possibility of incorporating various antifreeze agents. The following advantages are achieved compared to conventional fire extinguishing foam agents:
- Increasing the resistance to sea water and thus the compatibility of the foam-forming component when using sea water in fire fighting applications;
- substantial expansion of the number of foam-destroying liquids to be extinguished;
- Improved suction behavior, especially at low temperatures
a) by lowering the viscosity (reducing the polymer film former)
b) improvement of pseudoplastic (pseudoplastic) behavior;
- Improvement of aging resistance, especially at extreme temperatures as well as freezing and thawing stability;
- Improve the heat resistance of the concentrate;
- improvement of corrosion behavior;
- Increasing the stability of the foam against acids and alkalis, which is particularly advantageous for reducing emissions when covering leaking chemicals;
- Significant reduction in fish and bacterial toxicity;
- Savings in additional surfactants and foam stabilizers.

Es war überraschend, daß ein Feuerlöschschaummittel, welches als schaumbildende Komponente ein Alkylpolyglycosid der Formel

Figure imgb0004
worin n eine ganze Zahl von 2 bis 10 und R den Rest eines Fettalkohols mit 6 bis 12 C-Atomen darstellen, enthält, die voranstehend angegebenen Vorteile besitzt, wobei die Möglichkeit besteht, in das Feuerlöschschaum­mittel die verschiedenen bekannten Frostschutzmittel einzuarbeiten, ohne daß die hervorragende Wirkung des Feuerlöschschaummittels in irgendeiner Weise beein­trächtigt wird, wobei auch noch hinzukommt die gute Verträglichkeit dieser schaumbildenden Komponente mit Wasserfilm- und Polymerfilmbildnern, so daß Schäume ausgebil­bar sind, deren Stabiltät und Feinblasigkeit nicht be­einträchtigt werden.It was surprising that a fire extinguishing foam agent which, as the foam-forming component, is an alkyl polyglycoside of the formula
Figure imgb0004
 where n is an integer from 2 to 10 and R represents the remainder of a fatty alcohol having 6 to 12 carbon atoms, which has the advantages indicated above, it being possible to incorporate the various known antifreeze agents into the fire extinguishing foam agent without the excellent Effect of the fire extinguishing foam agent is impaired in any way, and there is also the good compatibility of this foam-forming component with water film and polymer film formers, so that foams can be formed, the stability and fine bubbles are not impaired.

Nach einer weiteren Ausführungsform der Erfindung weist das Feuerlöschschaummittel folgende Zusammensetzung auf:

  • a) Als schaumbildende Komponente Alkylpolyglycosid der Formel
    Figure imgb0005
     worin n eine ganze Zahl von 2 bis 10 und R den Rest eines Fettalkohols mit 6 bis 12 C-Atomen, insbesondere aus der Gruppe der primären Fettalkohole,
  • b) Polysaccharide z.B. ein lineares Polysaccharid,
  • c) Fluortenside, wobei es sich hierbei um Tenside handelt, die als hydrophobe Gruppe einen Perlfluor­alkylrest tragen, wie z.B. F₁₇C₈-S=₃K oder F₁₇C₈-CONR₂,
  • d) Frostschutzmittel, z. B. Glycole, Glycolether oder Harnstoff,
  • e) ggfs. Schaumverstärker und Frostschutzmittel, wobei Propylenglycol-n-Butyl-Ether und/oder Di-Propylenglycol-n-Butyl-Ether zur Anwendung kommen können.
According to a further embodiment of the invention, the fire extinguishing foam agent has the following composition:
  • a) As a foam-forming component alkyl polyglycoside of the formula
    Figure imgb0005
     in which n is an integer from 2 to 10 and R is the remainder of a fatty alcohol having 6 to 12 carbon atoms, in particular from the group of primary fatty alcohols,
  • b) polysaccharides, for example a linear polysaccharide,
  • c) fluorosurfactants, which are surfactants which carry a perfluoroalkyl radical as the hydrophobic group, such as, for example, F₁₇C₈-S = ₃K or F₁₇C₈-CONR₂,
  • d) antifreeze, e.g. B. glycols, glycol ether or urea,
  • e) if necessary. foam booster and antifreeze, propylene glycol n-butyl ether and / or di-propylene glycol n-butyl ether being able to be used.

Besonders vorteilhaft ist, wenn nach einer weiteren Aus­führungsform der Erfindung das Feuerlöschschaummittel sich wie folgt zusammensetzt:

Alkylpolyglycosid      8-30 %, vorzugsweise 15%
Polysaccharid      0,3-1,5 %, vorzugsweise 0,5%
Fluortensid      1-7 %, vorzugsweise 3%
Wasser, aufgefüllt auf      100 %, vorzugsweise 47,5 %
Frostschutzmittelmenge je nach gewünschter Frostbe­ständigkeit      5-35 %

wobei das Alkylpolyglycosid für sich allein oder auch mit anderen Tensiden gemischt eingesetzt werden kann.It is particularly advantageous if, according to a further embodiment of the invention, the fire extinguishing foam composition is composed as follows:

Alkyl polyglycoside 8-30%, preferably 15%
Polysaccharide 0.3-1.5%, preferably 0.5%
Fluorosurfactant 1-7%, preferably 3%
Water, made up to 100%, preferably 47.5%
Antifreeze amount depending on the desired frost resistance 5-35%

the alkyl polyglycoside can be used alone or mixed with other surfactants.

Aufgrund seiner schaumverstärkenden Eigenschaften und dem Umstand, als Frostschutzmittel eingesetzt zu werden, kann der Propylenclycol-n-Butyl-Ether und/oder Di-Propylenglycol-Butyl-Ehter auch jedem bekannten Feuerlöschschaummittel zugesetzt werden.Due to its foam-enhancing properties and the fact that it can be used as an anti-freeze, the propylene glycol n-butyl ether and / or di-propylene glycol butyl ether can also be added to any known fire extinguishing foam agent.

Des weiteren betrifft die Erfindung ein Feuerlösch­schaummittel, das in an sich bekannter Weise zusammenge­setzt ist, dem als Schaumverstärker und Frostschutzmittel Propylenglycol-n-Butyl-Ether oder Di-Propylenglycol­n-Butyl-Ether für sich allein oder in Mischung zugesetzt ist. Ein derart ausgebildetes Feuerlösch­schaummittel kann nach einer weiteren Ausführungsform der Erfindung als schaumbildende Komponente ein Alkylpolyglycosid der Formel

Figure imgb0006
worin n eine ganze Zahl von 2 bis 10 und R den Rest eines Fettalkohols mit 6 bis 12 C-Atomen, insbesondere ein Fettalkohol aus der Gruppe der primären Fettalkohole darstellen, enthalten.Furthermore, the invention relates to a fire extinguishing foam agent, which is composed in a manner known per se, that as a foam booster and antifreeze Propylene glycol n-butyl ether or di-propylene glycol butyl ether is added alone or as a mixture. According to a further embodiment of the invention, such a fire extinguishing foam agent can be an alkyl polyglycoside of the formula as a foam-forming component
Figure imgb0006
 where n is an integer from 2 to 10 and R is the remainder of a fatty alcohol having 6 to 12 carbon atoms, in particular a fatty alcohol from the group of primary fatty alcohols.

Die Erfindung wird anhand des nachstehenden Ausführungs­beispiels erläutert, wobei ein Feuerlöschschaummittel mit der erfindungsgemäß schaumbildenden Komponente als Rezeptur 2 und 3 einem Feuerlöschschaummittel als Rezeptur 1 gegenübergestellt ist, das als Schaum­bildner kein Alkylpolyglycosid enthält.

Figure imgb0007
The invention is explained on the basis of the exemplary embodiment below, in which a fire extinguishing foam agent with the foam-forming component according to the invention as recipe 2 and 3 is compared with a fire extinguishing foam agent as recipe 1 which contains no alkyl polyglycoside as a foaming agent.
Figure imgb0007

Löschteste auf 1,1 m²; Aufgaberate 6,0 Liter/Minute und m²; indirekte Schaumaufgabe; 100 Liter Isopropanol; 60 Sekunden Vorbrennzeit; Schaumaufgabe 60 Sekunden.

Figure imgb0008
Extinguishing tests on 1.1 m²; Feed rate 6.0 liters / minute and m²; indirect foam application; 100 liters of isopropanol; 60 seconds pre-burn time; Foam application 60 seconds.
Figure imgb0008

Claims (5)

1. Schaumbildende Komponente für Feuerlöschschaummittel, dadurch gekennzeichnet, daß die schaumbildende Kompo­nente zur Erhöhung der Verträglichkeit mit Polymer­filmbildnern und der Möglichkeit der Verwendung von Frostschutzmitteln bei gleichzeitiger Erhöhung der Seewasserbeständigkeit und der Stabilität des Schau­mes gegenüber Säuren und Alkalien, insbesondere zur Emissionsminderung beim Abdecken ausgelaufener Chemi­kalien aus einem Alkylpolyglycosid der Formel
Figure imgb0009
 worin n eine ganze Zahl von 2 bis 10 und R den Rest eines Fettalkohols mit 6 bis 12 C-Atomen, insbesondere ein Fettalkohol aus der Gruppe der primären Fettal­kohole darstellen, besteht.1. Foam-forming component for fire extinguishing foam agents, characterized in that the foam-forming component to increase the compatibility with polymer film formers and the possibility of using antifreeze while increasing the resistance to sea water and the stability of the foam against acids and alkalis, in particular to reduce emissions when covering leaking chemicals an alkyl polyglycoside of the formula
Figure imgb0009
 where n is an integer from 2 to 10 and R is the remainder of a fatty alcohol having 6 to 12 carbon atoms, in particular a fatty alcohol from the group of primary fatty alcohols. 2. Feuerlöschschaummittel mit einer schaumbildenden Komponente nach Anspruch 1, dadurch gekennzeichnet, daß es a) als schaumbildende Komponente ein Alkylpolyglycosid der Formel
Figure imgb0010
 worin n eine ganze Zahl von 2 bis 20 und R den Rest eines Fettalkohols mit 6 bis 12 C-Atomen, insbe­sondere ein Fettalkohol aus der Gruppe der primären Fettalkohole, b) ein Polysaccharid, wie z.B. ein lineares Poly­saccharid, wie z.B. Stärke, Glykogen, Zellulose oder dgl., c) ein Fluortensid, d) ein bekanntes Frostschutzmittel, wie z.B. Glycol, Glycolether, Harnstoff od. dgl. oder einer Mischung aus Glycol, Glycolether und Harnstoff, wobei die eine oder andere dieser Komponenten auch miteinander mischbar sind, gegebenenfalls e) einen Propylenglycol-n-Butyl-Ether und/oder einen Di-Propylenglycol-n-Butyl-Ether enthält. 2. Fire extinguishing foam agent with a foam-forming component according to claim 1, characterized in that it a) as a foam-forming component, an alkyl polyglycoside of the formula
Figure imgb0010
 where n is an integer from 2 to 20 and R is the remainder of a fatty alcohol having 6 to 12 carbon atoms, in particular a fatty alcohol from the group of primary fatty alcohols, b) a polysaccharide such as a linear polysaccharide such as starch, glycogen, cellulose or the like, c) a fluorosurfactant, d) a known antifreeze, such as glycol, glycol ether, urea or the like or a mixture of glycol, glycol ether and urea, one or the other of these components also being miscible with one another, if appropriate e) contains a propylene glycol n-butyl ether and / or a di-propylene glycol n-butyl ether. 3. Feuerlöschschaummittel nach Anspruch 2, dadurch gekennzeichnet, daß sich das Feuerlöschschaummittel wie folgt zusammensetzt:

Alkylpolyglycosid mit der im Anspruch 1 angegebenen Formel      8-30 %, vorzugsweise 15 %
Polysaccharid      0,3-1,5 %, vorzugsweise 0,5 %
Fluortensid      1- 7 %, vorzugsweise 3 %
Frostschutzmittelmenge je nach gewünschter Frostbe­ständigkeit      5-35 %
Wasser, aufgefüllt auf      100 %, vorzugsweise 47,5 %
3. fire extinguishing foam agent according to claim 2, characterized in that the fire extinguishing foam agent is composed as follows:

Alkyl polyglycoside with the formula given in claim 1 8-30%, preferably 15%
Polysaccharide 0.3-1.5%, preferably 0.5%
Fluorosurfactant 1-7%, preferably 3%
Antifreeze amount depending on the desired frost resistance 5-35%
Water, made up to 100%, preferably 47.5%
4. Feuerlöschschaummittel aus einer schaumbildenden Komponente, einer Frostschutzkomponente, ggfs. einem Schaumstabilisator und einem Lösungsmittel, dadurch gekennzeichnet, daß es als Schaumverstärker und Frostschutzmittel Propylenglycol-n-Butyl-Ether und/oder Di-Propylenglycol-n-Butyl-Ether enthält.4. Fire extinguishing foam agent from a foam-forming component, an anti-freeze component, possibly a foam stabilizer and a solvent, characterized in that it contains propylene glycol n-butyl ether and / or di-propylene glycol n-butyl ether as foam enhancer and anti-freeze. 5. Feuerlöschschaummittel nach Anspruch 4, dadurch gekennzeichnet, daß es als schaumbildende Komponente ein Alkylpolyglycosid der Formel
Figure imgb0011
 worin n eine ganze Zahl von 2 bis 10 und R den Rest eines Fettalkohols mit 6 bis 12 C-Atomen, insbesondere ein Fettalkohol aus der Gruppe der primären Fettalkohole darstellen, enthält.5. fire extinguishing foam agent according to claim 4, characterized in that it is an alkyl polyglycoside of the formula as a foam-forming component
Figure imgb0011
 where n is an integer from 2 to 10 and R contains the rest of a fatty alcohol having 6 to 12 carbon atoms, in particular a fatty alcohol from the group of primary fatty alcohols.
EP87110532A 1987-07-21 1987-07-21 Foam fire-extinguishing agents Expired - Lifetime EP0300070B2 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
EP87110532A EP0300070B2 (en) 1987-07-21 1987-07-21 Foam fire-extinguishing agents
ES198787110532T ES2031094T3 (en) 1987-07-21 1987-07-21 FOAMING AGENT FOR FIRE FIGHTING.
AT87110532T ATE75960T1 (en) 1987-07-21 1987-07-21 FIRE EXTINGUISHING FOAM AGENT.
DE8787110532T DE3779121D1 (en) 1987-07-21 1987-07-21 FIRE-FIGHTING FOAM.
GR920400803T GR3004598T3 (en) 1987-07-21 1992-05-14 Foam fire-extinguishing agents.

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Application Number Priority Date Filing Date Title
EP87110532A EP0300070B2 (en) 1987-07-21 1987-07-21 Foam fire-extinguishing agents

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EP0300070A1 true EP0300070A1 (en) 1989-01-25
EP0300070B1 EP0300070B1 (en) 1992-05-13
EP0300070B2 EP0300070B2 (en) 1995-12-06

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AT (1) ATE75960T1 (en)
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Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1991015564A1 (en) * 1990-04-09 1991-10-17 Henkel Kommanditgesellschaft Auf Aktien Tenside mixture for use in washing and cleaning agents
EP0483253A1 (en) * 1989-07-20 1992-05-06 Chubb National Foam Inc. Alcohol resistant aqueous film forming firefighting foam
WO1994028977A1 (en) * 1993-06-11 1994-12-22 San Martino S.P.A. Foaming composition for reducing the pressure associated with the shock wave generated by burstings
DE19545136C1 (en) * 1995-12-04 1997-04-10 Henkel Kgaa Syndet soap bars with little or no free fatty acid content
EP0936938A1 (en) * 1996-11-04 1999-08-25 Hans Achtmann Biodegradable foam compositions for extinguishing fires
US5981452A (en) * 1995-12-04 1999-11-09 Henkel Kommanditgesellschaft Auf Aktien Syndet soaps comprising alkyl and/or alkenyl oligoglycosides
US6814880B1 (en) 1999-02-25 2004-11-09 Cognis Deutschland Gmbh & Co. Kg Water based liquid foam extinguishing formulation
CN104117176A (en) * 2014-07-23 2014-10-29 安徽天元消防科技有限公司 Aqueous film-forming foam extinguishing agent special for fire extinguishing bullet and throwing type fire extinguisher
CN116948750A (en) * 2023-09-20 2023-10-27 广州洁宜日化用品有限公司 Preparation method of floor water for sweeping robot

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DE19708733B4 (en) * 1997-03-04 2007-05-31 Cognis Ip Management Gmbh Liquid foam extinguishing agent based on water

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Publication number Priority date Publication date Assignee Title
EP0483253A1 (en) * 1989-07-20 1992-05-06 Chubb National Foam Inc. Alcohol resistant aqueous film forming firefighting foam
EP0483253A4 (en) * 1989-07-20 1992-06-24 Chubb National Foam Inc. Alcohol resistant aqueous film forming firefighting foam
WO1991015564A1 (en) * 1990-04-09 1991-10-17 Henkel Kommanditgesellschaft Auf Aktien Tenside mixture for use in washing and cleaning agents
WO1994028977A1 (en) * 1993-06-11 1994-12-22 San Martino S.P.A. Foaming composition for reducing the pressure associated with the shock wave generated by burstings
DE19545136C1 (en) * 1995-12-04 1997-04-10 Henkel Kgaa Syndet soap bars with little or no free fatty acid content
US5981452A (en) * 1995-12-04 1999-11-09 Henkel Kommanditgesellschaft Auf Aktien Syndet soaps comprising alkyl and/or alkenyl oligoglycosides
EP0936938A1 (en) * 1996-11-04 1999-08-25 Hans Achtmann Biodegradable foam compositions for extinguishing fires
EP0936938A4 (en) * 1996-11-04 1999-11-03 Hans Achtmann Biodegradable foam compositions for extinguishing fires
US6814880B1 (en) 1999-02-25 2004-11-09 Cognis Deutschland Gmbh & Co. Kg Water based liquid foam extinguishing formulation
CN104117176A (en) * 2014-07-23 2014-10-29 安徽天元消防科技有限公司 Aqueous film-forming foam extinguishing agent special for fire extinguishing bullet and throwing type fire extinguisher
CN116948750A (en) * 2023-09-20 2023-10-27 广州洁宜日化用品有限公司 Preparation method of floor water for sweeping robot
CN116948750B (en) * 2023-09-20 2023-12-15 广州洁宜日化用品有限公司 Preparation method of floor water for sweeping robot

Also Published As

Publication number Publication date
EP0300070B2 (en) 1995-12-06
DE3779121D1 (en) 1992-06-17
EP0300070B1 (en) 1992-05-13
ES2031094T3 (en) 1992-12-01
GR3004598T3 (en) 1993-04-28
ATE75960T1 (en) 1992-05-15

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