EP1313532B1 - Dispersions polymeres pour la prevention et la lutte contre les incendies, a impact reduit sur l'environnement - Google Patents

Dispersions polymeres pour la prevention et la lutte contre les incendies, a impact reduit sur l'environnement Download PDF

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Publication number
EP1313532B1
EP1313532B1 EP01958055A EP01958055A EP1313532B1 EP 1313532 B1 EP1313532 B1 EP 1313532B1 EP 01958055 A EP01958055 A EP 01958055A EP 01958055 A EP01958055 A EP 01958055A EP 1313532 B1 EP1313532 B1 EP 1313532B1
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EP
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Prior art keywords
water
polymer
oil
polymer dispersions
acid
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EP01958055A
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German (de)
English (en)
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EP1313532A1 (fr
Inventor
Bernd Diener
Veronika Gehler
Erich Kuester
Daniel Roulands
Dieter Wehrhahn
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Stockhausen GmbH and Co KG
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Stockhausen GmbH and Co KG
Chemische Fabrik Stockhausen GmbH
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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
    • A62D1/0028—Liquid extinguishing substances
    • A62D1/005—Dispersions; Emulsions
    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62C—FIRE-FIGHTING
    • A62C99/00—Subject matter not provided for in other groups of this subclass
    • A62C99/0009—Methods of extinguishing or preventing the spread of fire by cooling down or suffocating the flames

Definitions

  • the present invention relates to water-in-oil polymer dispersions consisting of a continuous organic phase and finely divided crosslinked, water-swellable polymers, these having a residual monomer content of less than 1,000 ppm.
  • the present invention further relates to a method for producing the polymer dispersions according to the invention.
  • the present invention relates to devices for fire prevention and control and the use of the polymer dispersions according to the invention.
  • additives with thickening properties are used to increase the viscosity of the fire extinguishing water in order to achieve better adhesion of the fire extinguishing agent to surfaces, in particular to inclined surfaces, than water.
  • Most of the known fire extinguishing water additives consist of water-swellable polymers, but their applicability is restricted due to their solid, granular morphology.
  • polymer dispersions in the form of water-in-oil emulsions have recently been used, as described in EP 0 774 279 B1. These emulsions consist of a continuous oil phase in which particles of a crosslinked, water-swellable polymer are dispersed. The polymer particles have particle sizes of less than 2 ⁇ m, which results in extremely short swelling times of less than 3 seconds.
  • the water-in-oil emulsions have the properties of a thickener, so that after mixing with water a highly viscous fire extinguishing agent or fire prevention agent is obtained which adheres well to any type of surface, in particular to inclined surfaces.
  • a disadvantage of all additives to fire extinguishing water is their comparatively low environmental compatibility, in particular their toxic effect Microorganisms such as algae and daphnia.
  • Microorganisms such as algae and daphnia.
  • EC 50 values are used, which are determined according to the OECD guideline 201 and as a measure of the toxicity to daphnia, corresponding EC 50 values are used, which are determined according to the OECD guideline 202. Due to their toxicity to algae and daphnia, the known fire extinguishing water additives are classified as "environmentally hazardous" according to European law and must be labeled with the hazard symbol "N".
  • the object of the present invention is therefore to provide more environmentally compatible polymer dispersions which can be used as an additive to fire-fighting water.
  • the object is achieved according to the invention by the provision of water-in-oil polymer dispersions which consist of a continuous organic phase which is practically immiscible with water and finely divided, crosslinked, water-swellable polymers and, if appropriate, auxiliaries, the water-in-oil Polymer dispersions have a residual monomer content of less than 1,000 ppm.
  • a water-in-oil polymer dispersion comprises both a polymer emulsion and a polymer suspension, e.g. in Ullmann's Encyclopedia of Industrial Chemistry, 1988, Vol. A11, page 254, which is hereby introduced as a reference and is therefore considered part of the disclosure.
  • residual monomers are understood to be the monomers used in a polymerization reaction and not converted during the polymerization, which monomers are thus contained in the polymer dispersion in a chemically unchanged manner after the polymerization.
  • the polymers contained in the water-in-oil polymer dispersions according to the invention are a class of products which are preferably prepared by reverse-phase emulsion polymerization. This produces finely divided, crosslinked, water-swellable polymers in a continuous organic phase which is practically immiscible with water with the addition of water-in-oil emulsifiers.
  • the monomers are added to the organic phase as a monomer solution consisting of suitable monomers and preferably at least one bifunctional crosslinking agent.
  • the monomer solution contains at least one polymerizable, hydrophilic monomer.
  • this can also consist of a mixture of two or more monomers from the group of the hydrophilic monomers.
  • the monomer solution preferably contains, as monomers, acrylic acid and / or an acrylic acid derivative, particularly preferably at least one salt of acrylic acid and acrylamide and very particularly preferably a mixture of acrylic acid, acrylamide and a salt of 2-acrylamido-2-methylpropanesulfonic acid.
  • the monomer solution preferably additionally contains 0.1 to 1% by weight of a bifunctional crosslinking agent.
  • the degree of crosslinking of the polymer significantly influences the viscosity and thus the adhesive properties of the resulting polymer.
  • Preferred crosslinkers are methylene bisacrylamide, allyl (meth) acrylate, diallyl phthalate, polyethylene glycol di (meth) acrylate, tetraethylene glycol di (meth) acrylate, triethylene glycol di (meth) acrylate, diethylene glycol di (meth) acrylate, glycerol di (meth) acrylate, hydroxypropyl (meth) acrylate Trimethylolpropane tri (meth) acrylate used.
  • Triallylmethylammonium chloride is particularly preferably used as the crosslinking agent.
  • the monomer solution is added to an organic phase which contains a water-in-oil emulsifier.
  • fatty acid esters are used as the organic phase.
  • Esters of linear saturated or unsaturated fatty acids in particular fatty acids with an alkyl chain length of more than 11 carbon atoms, particularly preferably lauric, myristic, palmitic, stearic and oleic acid, with alcohols are particularly preferably used.
  • Short-chain alcohols preferably C 1 -C 4 alcohols, are preferably used as the alcohol component.
  • Higher, once branched alcohols are also preferably used, which are preferably produced by Guerbet synthesis.
  • water-in-oil polymer dispersions received, which have a very low daphnia toxicity, measured according to the OECD Guideline 202.
  • water-in-oil polymer dispersions are obtained which have an EC 50 value, determined according to OECD Guideline 202, of more than 10 mg / l.
  • the fatty acid esters are used alone or preferably in a mixture with a hydrocarbon or a mixture of hydrocarbons, the hydrocarbon or the mixture of hydrocarbons having a boiling point of less than 200 ° C.
  • So-called white oils from petroleum distillation or ligroin with a boiling range of 150-200 ° C. are very particularly preferably used for this purpose.
  • the organic phase is preferably used in an amount of 20 to 80% by weight, based on the amount of the dispersion.
  • an emulsifier 0.5 to 10% by weight, based on the amount of dispersion, of an oil-soluble emulsifier is added to the organic phase.
  • Emulsifiers from the group of the surfactants are preferably used. Sorbitan esters, phthalic acid esters, fatty acid glycerides and ethoxylated derivatives thereof are particularly preferably used. Polymeric emulsifiers with the trade name Hypermer® (from ICI, London, England) are very particularly preferably used.
  • a residual monomer killer is preferably added to the polymer dispersion.
  • the addition is such that the content of residual monomers in the resulting water-in-oil polymer dispersion is less than 1,000 ppm.
  • Residual monomer destroyers in the sense of the present invention are substances which modify polymerizable monomers by a chemical reaction in such a way that they are no longer polymerizable, so that they are no longer monomers in the sense of the present invention.
  • substances are used which react with the double bond contained in the monomers and / or substances which can initiate further polymerization.
  • the abovementioned reducing agents can be used in combination with oxidizing agents, preferably substances from the group of the peroxodisulfates or hydroperoxides, preferably hydrogen peroxide.
  • oxidizing agents preferably substances from the group of the peroxodisulfates or hydroperoxides, preferably hydrogen peroxide.
  • compounds which decompose into radicals at elevated temperature such as preferably substances from the group of azo compounds, peroxides or peroxodisulfates.
  • the water-in-oil polymer dispersion is added an oil-in-water emulsifier, also referred to as an activator or inverter, in an amount of 0.5 to 10% by weight, based on the amount of the emulsion.
  • Ethoxylated fatty alcohols are preferably used as inverters, preferably ethoxylated fatty alcohols which are produced from linear and / or branched fatty alcohols with an alkyl chain length of more than 11 carbon atoms.
  • Ethoxylation products of highly branched alcohols, which are accessible by oxosynthesis, such as preferably isotridecyl alcohol, are likewise preferably used.
  • An ethoxylation product of higher, once branched alcohols, which are accessible by Guerbet synthesis, is particularly preferably used as the inverter.
  • the water-in-oil polymer dispersion according to the invention preferably contains 10 to 70% by weight, particularly preferably 20 to 50% by weight and very particularly preferably 25 to 35% by weight, of crosslinked, water-swellable polymer particles.
  • the polymer particles preferably have a particle size of less than 2 ⁇ m, and particularly preferably a particle size of less than 1 ⁇ m.
  • the swelling time of the polymer particles is preferably less than 3 seconds.
  • the water-in-oil polymer dispersions according to the invention which can be used as water additives for fire prevention and fighting, are distinguished from the previously known fire-fighting water additives by an improved environmental compatibility, in particular by a lower toxicity to microorganisms.
  • they have an EC 50 value of over 10 mg / l, determined according to the algae test in accordance with OECD Guideline 201.
  • EC 50 values of over 10 mg / l are also obtained in the daphnia test according to the OECD guideline, so that the dispersions according to the invention comply with European Can only be classified as "harmful to aquatic organisms". A labeling requirement with the danger symbol "N" does not apply.
  • the fire extinguishing water additives according to the invention are to be used with preference over fire extinguishing water additives according to the state of the art in fire prevention and control from an ecological point of view, especially in the wild, preferably in forest or bush fires.
  • the present invention further provides a process for the preparation of the water-in-oil polymer dispersions according to the invention, preferably by phase reversal emulsion polymerization, with a residual monomer destroyer being added to the polymer dispersion after the polymerization.
  • the monomers are added to the organic phase as a monomer solution consisting of suitable monomers, water and preferably at least one bifunctional crosslinking agent.
  • the polymerization reaction is started by adding the polymerization initiators known to the person skilled in the art.
  • azo compounds, peroxide compounds or redox catalysts in each case alone or as a mixture with one another, are preferably used in an amount of 0.001 to 5% by weight, based on the amount of monomer solution.
  • the polymerization is carried out adiabatically, isothermally or as a combination of an adiabatic and isothermal process.
  • the polymerization is started at a certain temperature under reduced pressure.
  • the reduced pressure is adjusted so that The resulting heat of polymerization distills off volatile substances such as water and constituents of the organic phase and the temperature can be kept constant to a few degrees.
  • the end of the polymerization is characterized in that no more distillate passes over.
  • the abovementioned residual monomer eliminators are added to the polymer dispersion. Since the dispersion is oxygen-free after the end of the reaction, the reduction in the amount of residual monomers after the addition of the residual monomer destroyers is particularly effective in this process. 100 to 20,000 ppm, preferably 200 to 5,000 ppm and particularly preferably 500 to 3,000 ppm, based on the dispersion, of residual monomer destroyers are preferably used.
  • the adiabatic process is started at a certain temperature.
  • the polymerization is carried out at atmospheric pressure without external heat supply, until a final temperature which is dependent on the content of polymerizable substance is reached by the heat of polymerization.
  • the reaction mixture is cooled, in the course of which the residual monomer destroyer is added. Since no oxygen-free dispersions are obtained in this process, larger amounts of residual monomer destroyers must be used. Preferably 100 to 20,000 ppm, preferably 500 to 5,000 ppm, of residual monomer destroyers are used in this process.
  • the polymerization can also be carried out as a combination of an isothermal and adiabatic process. Such a process is preferably carried out isothermally at first. At a predetermined time, the apparatus is aerated with inert gas and the polymerization is continued adiabatically up to a certain final temperature. The batch is then cooled to a preselected temperature by applying a new vacuum and distillation. This procedure results in an oxygen-free polymer dispersion, so that the reduction in the amount of residual monomers runs particularly effectively after adding the residual monomer destroyer. Preferably 100 to 20,000 ppm, preferably 200 to 5,000 ppm and particularly preferably 500 to 3,000 ppm of residual monomer destroyer, based on the dispersion, are used.
  • an O / W emulsifier also referred to as an activator or inverter
  • an activator or inverter is added to the dispersion in an amount of 0.5 to 10% by weight, based on the amount of the dispersion.
  • Ethoxylated fatty alcohols are preferably used as inverters, preferably ethoxylated fatty alcohols which are produced from linear and / or branched fatty alcohols with an alkyl chain length of more than 11 carbon atoms.
  • Ethoxylation products of highly branched alcohols, which are accessible by oxosynthesis, such as preferably isotridecyl alcohol, are likewise preferably used.
  • An ethoxylation product of higher, once branched alcohols, which are accessible by Guerbet synthesis, is particularly preferably used as the inverter.
  • the method according to the invention can be used to produce more environmentally compatible polymer dispersions, which can be used as an additive to fire-fighting water.
  • the process according to the invention gives polymer dispersions which have EC 50 values according to the algae test in accordance with OECD Guideline 201 of over 10 mg / l.
  • EC 50 values of over 10 mg / l are obtained in the daphnia test in accordance with the OECD guideline, so that the polymer dispersions according to the invention are only classified as “harmful to aquatic organisms” under European law and there is no obligation to label them with the hazard symbol “N”.
  • the present invention further relates to the use of the polymer dispersions according to the invention as fire extinguishing agents, in which water is added to the polymer dispersion.
  • Fire extinguishing agents in the sense of the present invention are agents which are suitable for protecting surfaces against fire and / or for fighting fire.
  • the water-in-oil polymer dispersions according to the invention can be mixed with water using all the devices customary for this purpose, as described, for example, in EP 0 774 279 B1 and in DE 299 04 848 U1. These writings are hereby introduced as a reference and are therefore considered part of the disclosure.
  • the polymer dispersion is preferably added to the water in a concentration of 0.01 to 50% by volume. 0.02 to 10% by volume and very particularly preferably 1 to 2% by volume of water-in-oil polymer dispersion are particularly preferably used for mixing with water.
  • the mixture of water and polymer dispersion preferably has a viscosity of over 100 mPa ⁇ s, particularly preferably a viscosity in the range from 500 to 50,000 mPa ⁇ s.
  • water-in-oil polymer dispersions according to the invention is distinguished from the use of the known fire extinguishing agents by a higher environmental compatibility, in particular by a lower toxicity to microorganisms.
  • Another object of the present invention is a method for applying the water-in-oil polymer dispersion according to the invention to a surface for preventing and / or fighting fires, water being added to the polymer dispersion in an amount sufficient to adjust the viscosity of the the resulting water / polymer dispersion mixture to above 100 mPa ⁇ s, and this mixture is applied to the surface.
  • the polymer dispersion is mixed with water or aqueous extinguishing agents, preferably in a concentration of 0.01 to 50% by volume. particularly preferably from 0.02 to 10% by volume and very particularly preferably from 1 to 2% by volume.
  • the fire extinguishing agent according to this invention can be applied to the surfaces affected by fire with any conventional fire-fighting device.
  • any conventional fire-fighting device are described for example in EP 0 774 279 B1 and in DE 299 04 848 U1.
  • the polymer dispersion can preferably be mixed with the water continuously or in batches.
  • the method according to the invention is distinguished by an improved environmental compatibility compared to the known methods.
  • the method is therefore particularly suitable for use in the wild, i.e. away from places that are equipped with a sewage system or water retention basin, such as in forest or bush fires.
  • Another object of the present invention is a device for fire prevention and fire extinguishing, which consists of a pressure-resistant container for holding a fire extinguishing agent consisting of water and the polymer dispersion according to the invention.
  • the fire-extinguishing agent can be contained in the pressure-resistant container as a mixture of the polymer dispersion according to the invention and water and can be applied to the source of the fire through conventional outlet devices.
  • the two components namely the polymer dispersion and the water, are preferably initially separated from one another and are accommodated in different, separate sections of the container and are mixed together by actuating a trigger mechanism known for this purpose.
  • the device is preferably a hand-held fire extinguisher or a fire-fighting train as described in the prior art, preferably in EP 0 774 279 B1 and in DE 299 04 848 U1.
  • the devices according to the invention are distinguished by an increased environmental compatibility of the fire extinguishing agent contained therein.
  • OECD Guideline 201 "Alga, Growth Inhibition Test”
  • OECD Guideline 202 "Daphnia sp., Acute Immobilization Test and Reproduction Test” Part 1.
  • the comparative example was carried out using Firesorb® MF, a water-in-oil polymer dispersion of a water-swellable, crosslinked polymer based on sodium acrylate, acrylamide and a 2-acrylamido-2-methylpropanesulfonic acid sodium salt.
  • Firesorb® MF is a product of Stockhausen GmbH & Co. KG, Bäkerpfad 25, D-47805 Krefeld.
  • water-in-oil polymer dispersions are prepared by the polymerization processes ("procedure") given in Table 1, where "i” isothermal and “a” means adiabatic.
  • the approaches described below are used for the adiabatic or isothermal polymerization processes.
  • An aqueous monomer solution is first prepared from the following components: 485.0 g of water 78 g AMPS, sodium salt, 50% solution 203.5 g Acrylamide, 50% solution 297 g acrylic acid 297 g Sodium hydroxide solution, 50% solution 3.0 g formic acid, 85% 1.0 ml Versenex® 80 2.3 g TAMAC 0.5 g ABAH
  • Hypermer® 1083 are dissolved in 480 g of organic phase and the aqueous monomer solution is added with stirring. After the emulsion has been formed, it is homogenized with a high-speed household mixer and freed of dissolved oxygen by blowing out with nitrogen. The polymerization is started at 20 ° C. by adding 2 ml of a 0.2% tert-butyl hydroperoxide solution and 2.4 ml of sulfur dioxide gas, the batch being warmed up to about 100 ° C. by the heat of polymerization that arises. After the peak temperature has been reached, the polymer dispersion is cooled down to about 40 ° C. by vacuum distillation.
  • An aqueous monomer solution is first prepared from the following components: 500.0 g water 72.0 g AMPS, sodium salt, 50% solution 186.0 g Acrylamide, 50% solution 272.0 g acrylic acid 211.0 g Sodium hydroxide solution, 50% solution 3.0 g Formic acid, 85% 1.0 ml Versenex® 80 2.5 g TAMAC
  • Hypermer® 1083 40 g of Hypermer® 1083 are dissolved in 440 g of organic phase and the aqueous monomer solution is added with stirring. After the emulsion has been formed, it is homogenized with a high-speed household mixer and heated to 60 ° C. Then 0.3 g of AIBN are added and a vacuum is applied. Water is distilled off until the batch is oxygen-free and the polymerization starts. Due to the vacuum distillation, the reaction temperature remains constant in a range of 60 - 65 ° C. After about 90 ml of water have been distilled, the connection to the vacuum pump is closed and the apparatus is aerated with nitrogen until normal pressure is reached. The batch is then heated up to about 90 ° C. by the remaining heat of polymerization.
  • the dispersion is cooled down to about 40 ° C. again by vacuum distillation.

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  • Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Business, Economics & Management (AREA)
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Claims (23)

  1. Dispersions de polymères eau-dans-huile, constituées d'une phase organique continue virtuellement non miscible à l'eau et de polymères hydrosolubles finement distribués dans cette dernière, et, en option, réticulés, d'adjuvants, caractérisées en ce qu'elles ont une teneur en monomères résiduels inférieure à 1 000 ppm.
  2. Dispersions de polymères eau-dans-huile selon la revendication 1, caractérisées en ce qu'elles se composent :
    A) de 10 à 70% en poids, de préférence de 20 à 50% en poids, particulièrement préférablement de 25 à 35% en poids d'un polymère,
    B) de 20 à 80% en poids d'une phase organique,
    C) de 0,5 à 10% en poids d'un émulsifiant eau-dans-huile,
    D) de 0,1 à 2% en poids d'un agent destructeur de monomères résiduels,
    E) de 0,5 à 10% en poids d'un agent inverseur et
    F) le restant étant complété à 100% à l'aide d'eau.
  3. Dispersions de polymères eau-dans-huile selon la revendication 1 ou 2, caractérisées en ce que la phase organique est un ester d'acide gras, de préférence un ester d'acides gras linéaires, saturés et insaturés, ayant une longueur de chaîne alkyle de plus de 11 atomes de carbone et d'alcools en C1-C4 ou de monoalcools supérieurs ramifiés, ou un mélange d'au moins deux de ces esters.
  4. Dispersions de polymères eau-dans-huile selon la revendication 3, caractérisées en ce que l'ester d'acide gras ou les esters d'acides gras sont dans un mélange avec un hydrocarbure ou un mélange d'hydrocarbures, où le point d'ébullition de l'hydrocarbure ou du mélange d'hydrocarbures est de moins de 200°C.
  5. Dispersions de polymères eau-dans-huile selon l'une quelconque des revendications 1 à 4, caractérisées en ce que le polymère est un polymère de l'acide acrylique et/ou d'un dérivé de l'acide acrylique.
  6. Dispersions de polymères eau-dans-huile selon l'une quelconque des revendications 1 à 4, caractérisées en ce que le polymère est au moins un polymère du sel de l'acide acrylique et de l'acrylamide.
  7. Dispersions de polymères eau-dans-huile selon l'une quelconque des revendications 1 à 4, caractérisées en ce que le polymère est un terpolymère d'un sel de l'acide acrylique, de l'acrylamide et d'un sel de l'acide 2-acrylamido-2-méthylpropanesulfonique.
  8. Dispersions de polymères eau-dans-huile selon l'une quelconque des revendications 1 à 7, caractérisées en ce que l'agent réticulant est le chlorure de triallylméthylammonium.
  9. Dispersions de polymères eau-dans-huile selon l'une quelconque des revendications 1 à 8, caractérisées en ce que la dimension la plus grande des particules de polymères est de moins de 2 µm et, de préférence de moins de 1 µm.
  10. Dispersions de polymères eau-dans-huile selon l'une quelconque des revendications 1 à 9, caractérisées en ce que le temps de gonflement des particules de polymères est de pas plus de trois secondes.
  11. Dispersions de polymères eau-dans-huile selon l'une quelconque des revendications 1 à 10, caractérisées en ce qu'elles ont une valeur EC50, déterminée conformément à la directive OECD 202 et/ou à la directive OECD 201 de plus de 10 mg/l.
  12. Procédé de préparation de dispersions polymères eau-dans-huile selon l'une quelconque des revendications 1 à 11, par polymérisation d'une émulsion de polymères, caractérisé en ce qu'un agent destructeur de monomères résiduels est ajouté après la polymérisation.
  13. Procédé selon la revendication 12, caractérisé en ce que les agents destructeurs de monomères résiduels utilisés sont des substances du groupe des sels acides et neutres d'acides dérivés du soufre, ayant un nombre d'oxydation de moins de VI, de préférence le dithionite de sodium, le thiosulfate de sodium, le sulfite de sodium ou le bisulfite de sodium, et/ou des substances ayant un groupement sulfure d'hydrogène, de préférence du sulfure d'hydrogène sodique ou des composés du groupe des thiols, de préférence le mercaptoéthanol, le dodécylmercaptan, l'acide thiopropionique ou des sels de l'acide thiopropionique ou l'acide thiopropanesulfonique ou des sels de l'acide thiopropanesulfonique et/ou des substances du groupe des amines, de préférence du groupe des amines ayant une volatilité faible et/ou des substances du groupe qui se compose des sels Bunte, de l'acide formamidinesulfinique, du dioxyde de soufre, de solutions aqueuses et organiques du dioxyde de soufre ou de la thiourée.
  14. Procédé selon la revendication 12 ou 13, caractérisé en ce que les agents destructeurs de monomères résiduels sont utilisés dans une quantité allant de 100 à 20 000 ppm, de préférence de 200 à 5 000 ppm et particulièrement préférablement de 500 à 3 000 ppm, sur la base de la dispersion.
  15. Utilisation de dispersions de polymères eau-dans-huile selon l'une quelconque des revendications 1 à 11, en tant que milieux d'extinction du feu, caractérisée en ce que l'eau et/ou un milieu hydraté d'extinction du feu est (ou sont) ajouté(s) à la dispersion de polymères.
  16. Utilisation selon la revendication 15, caractérisée en ce que l'eau est ajoutée à la dispersion de polymères dans une concentration allant de 0,01 à 50% en volume, de préférence de 0,02 à 10% en volume et particulièrement préférablement de 1 à 2% en volume.
  17. Utilisation selon la revendication 15 ou la revendication 16, caractérisée en ce que le mélange eau/dispersion de polymères a une viscosité de plus de 100 mPa.s, de préférence une viscosité allant de 500 à 50 000 mPa.s.
  18. Procédé d'application d'une dispersion de polymères eau-dans-huile selon l'une quelconque des revendications 1 à 11, à une surface en vue de la prévention et/ou de la lutte contre les incendies, caractérisé en ce que la dispersion de polymères est ajoutée à l'eau dans une quantité suffisante pour augmenter la viscosité du mélange résultant eau/dispersion de polymères à plus de 100 mPa.s, et en ce que ce mélange est appliqué à une surface.
  19. Procédé selon la revendication 18, caractérisé en ce que la concentration de la dispersion de polymères est de 0,01 à 50% en volume, de préférence de 0,02 à 10% en volume et particulièrement préférablement, de 1 à 2% en volume.
  20. Procédé selon la revendication 18 ou 19, caractérisé en ce que la dispersion de polymères est mélangée à de l'eau dans un dispositif de décharge habituel en vue de la lutte contre les incendies et est appliquée à une surface en utilisant ce dispositif.
  21. Procédé selon la revendication 18 ou 19, caractérisé en ce que la dispersion de polymères est mélangée à de l'eau par lot avant l'application du mélange à la surface en utilisant un dispositif de décharge.
  22. Dispositif de prévention du feu et d'extinction du feu, caractérisé en ce qu'il se compose d'un récipient résistant à la pression, dans lequel l'eau et la dispersion de polymères, selon l'une quelconque des revendications 1 à 11, sont présentes séparément l'une de l'autre.
  23. Dispositif selon la revendication 22, caractérisé en ce qu'il s'agit d'un extincteur d'incendies tenu à la main ou d'un véhicule de lutte contre les incendies.
EP01958055A 2000-08-23 2001-08-06 Dispersions polymeres pour la prevention et la lutte contre les incendies, a impact reduit sur l'environnement Expired - Lifetime EP1313532B1 (fr)

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PCT/EP2001/009057 WO2002015982A1 (fr) 2000-08-23 2001-08-06 Dispersions polymeres pour la prevention et la lutte contre les incendies, a impact reduit sur l'environnement

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ES2220791T3 (es) 2004-12-16
DE50102155D1 (de) 2004-06-03
DE10041395A1 (de) 2002-03-07
US20040006175A1 (en) 2004-01-08
US8475675B2 (en) 2013-07-02
ATE265254T1 (de) 2004-05-15
AR030474A1 (es) 2003-08-20
AU2001279805B2 (en) 2005-10-13
TR200401706T4 (tr) 2004-08-23
EP1313532A1 (fr) 2003-05-28
WO2002015982A1 (fr) 2002-02-28
US20080185160A1 (en) 2008-08-07
AU7980501A (en) 2002-03-04

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