EP1064242B1 - Agents propulseurs de generateurs de gaz - Google Patents

Agents propulseurs de generateurs de gaz Download PDF

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Publication number
EP1064242B1
EP1064242B1 EP99919100A EP99919100A EP1064242B1 EP 1064242 B1 EP1064242 B1 EP 1064242B1 EP 99919100 A EP99919100 A EP 99919100A EP 99919100 A EP99919100 A EP 99919100A EP 1064242 B1 EP1064242 B1 EP 1064242B1
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EP
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Prior art keywords
propellant
component
gas generators
generators according
gas
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EP99919100A
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German (de)
English (en)
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EP1064242A1 (fr
Inventor
Eduard Gast
Bernhard Schmid
Peter Semmler
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Nigu Chemie GmbH
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Nigu Chemie GmbH
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Classifications

    • C—CHEMISTRY; METALLURGY
    • C06—EXPLOSIVES; MATCHES
    • C06D—MEANS FOR GENERATING SMOKE OR MIST; GAS-ATTACK COMPOSITIONS; GENERATION OF GAS FOR BLASTING OR PROPULSION (CHEMICAL PART)
    • C06D5/00—Generation of pressure gas, e.g. for blasting cartridges, starting cartridges, rockets
    • C06D5/06—Generation of pressure gas, e.g. for blasting cartridges, starting cartridges, rockets by reaction of two or more solids
    • C—CHEMISTRY; METALLURGY
    • C06—EXPLOSIVES; MATCHES
    • C06B—EXPLOSIVES OR THERMIC COMPOSITIONS; MANUFACTURE THEREOF; USE OF SINGLE SUBSTANCES AS EXPLOSIVES
    • C06B23/00—Compositions characterised by non-explosive or non-thermic constituents
    • C—CHEMISTRY; METALLURGY
    • C06—EXPLOSIVES; MATCHES
    • C06B—EXPLOSIVES OR THERMIC COMPOSITIONS; MANUFACTURE THEREOF; USE OF SINGLE SUBSTANCES AS EXPLOSIVES
    • C06B25/00—Compositions containing a nitrated organic compound
    • C—CHEMISTRY; METALLURGY
    • C06—EXPLOSIVES; MATCHES
    • C06B—EXPLOSIVES OR THERMIC COMPOSITIONS; MANUFACTURE THEREOF; USE OF SINGLE SUBSTANCES AS EXPLOSIVES
    • C06B31/00—Compositions containing an inorganic nitrogen-oxygen salt

Definitions

  • the invention relates to solid gas generator propellants (gas-generating mixtures), mainly for gas generator propellants for airbags and belt tensioners based on nitrogen-rich and low-carbon fuels possible, the solid gas generator fuels additionally contain a high-melting, substantially chemically inert Schlackenflinder in highly dispersed form, which acts as an internal filter and the formation and the discharge of dust-like particles from the gas generator housing largely prevented.
  • the invention thus relates to a method for intercepting the liquid or solid combustion products or dusty slag parts within the gas generator propellant immediacy in the emergence, so that manages with a simple structured filter pack in the gas generator housing.
  • the invention further relates to the use of catalysts based on platinum metals (Ru, Os, Rh, Ir, Pd, Pt) or metal alloys of platinum metals or copper on the slag traps as carriers in solid gas generator fuels, in particular the use in fixed gas turbine inflator propellants.
  • platinum metals Ru, Os, Rh, Ir, Pd, Pt
  • metal alloys of platinum metals or copper on the slag traps as carriers in solid gas generator fuels, in particular the use in fixed gas turbine inflator propellants.
  • An airbag consists essentially of a gas generator housing, which is filled with the gas generator propellant, usually in tablet form, and a primer (squib) for igniting the gas generator propellant, as well as a gas bag.
  • a primer for igniting the gas generator propellant
  • Suitable detonators are described, for example, in US Pat. No. 4,931,111.
  • the initially small folded airbag is filled after the initial ignition of the resulting gas during combustion of the gas generator propellant and reached in a period of about 10-50 ms its full volume. Of the Escape of hot sparks, melts or solids from the gas generator in the gas bag must be largely prevented because it could lead to destruction of the gas bag or injury to vehicle occupants. This is achieved by binding and filtering the slag resulting from the combustion of the gas generator propellant.
  • DE-A-44 35 790 gas generator propellants based on guanidine compounds on suitable carriers are known which have substantially improved burn-off behavior and improved slag formation.
  • DE-A-44 35 790 gives no indication of the use of refractory, substantially inert slag scavengers in highly dispersed form or of catalysts in gas generator propellants.
  • the gas-generating mixture described in EP-B-0 482 852 comprises a) a fuel selected from aminotetrazole, tetrazole, bitetrazole and metal salts of these compounds and triazole compounds and metal salts of triazole compounds; b) an oxygen-containing oxidation compound selected from alkali metal, alkaline earth metal, lanthanide and ammonium nitrates and perchlorates and alkali metal and alkaline earth metal chlorates and peroxides; and either c) a high temperature slag forming material selected from alkaline earth metal oxides, hydroxides, carbonates, oxalates, peroxides, nitrates, chlorates and perchlorates and alkaline earth metal salts of tetrazoles, bitetrazoles and triazoles, and d) a low
  • the main advantage of such a gas generator propellant is the favorable formation of a slag, which can easily be filtered off from the gaseous combustion products formed. Another advantage is the high gas yield.
  • U.S. Patent No. 4,948,439 mentions the problem of the formation of toxic gaseous burnup products by the same inventor when using azide replacements such as tetrazole compounds (e.g., aminotetrazole and its metal salts) and mixtures thereof in gas generator propellants.
  • azide replacements such as tetrazole compounds (e.g., aminotetrazole and its metal salts) and mixtures thereof in gas generator propellants.
  • the problem is the speed with which the airbag must be inflated (10-50 ms), if in addition still ambient air must be sucked.
  • the catalyst consists of a metal or a metal alloy, preferably a pyrophoric metal or a pyrophoric metal alloy on a support.
  • the carrier is a silicate, preferably a layer or framework silicate.
  • metal in particular Ag has proven.
  • the known fuels used include triaminoguanidine nitrate (TAGN), nitroguanidine (NIGU or NQ), 3-nitro-1,2,3-triazol-5-one and especially diguanidinium-5,5'-azotetrazolate (GZT).
  • gas-generating mixtures described in DE-C-44 01 213 and DE-C-44 01 214 do not contain low-melting and high-melting slag formers or slag scavengers according to the invention, but rather claim that slag formers can be dispensed with there.
  • a part of the refractory slag catcher according to the invention can act here as a support for a platinum metal or for a metal alloy of platinum metals and thus as a catalyst component.
  • catalyst is used in an expanded sense and represents an active reaction component which can be reacted itself and acts to be reaction-promoting and / or reaction-accelerating.
  • the definition of the catalyst further includes that this is added to the Letsgemsich in a very low concentration.
  • the proportion of "catalyst" in the gas-generating mixture is up to 30% by mass and is thus more significant, even proportionately, part of the gas-generating mixture.
  • the present invention is based on the object of the present invention to provide improved gas generator fuels, in particular for airbags, whose burning behavior can be adjusted specifically and in particular the formation of toxic gases and respirable, dust-like components that may escape from the inflator housing.
  • the gas generator propellants produced from the gas generator fuels should be thermally stable, easy to ignite, fast - even at low temperature - burning and easy to store and ensure a high gas yield.
  • these gas generator propellant to allow a reduction in size, reduction in the number of components or simplification of the gas generator housing and thus their weight reduction compared to known generators.
  • Preferred fuels are nitroguanidine (NIGU), 5-aminotetrazole (ATZ), dicyandiamide (DCD), dicyanamide, their salts, especially sodium and calcium dicyanamide and guanidinium nitrate, and mixtures thereof.
  • NIGU nitroguanidine
  • ATZ 5-aminotetrazole
  • DCD dicyandiamide
  • dicyanamide their salts, especially sodium and calcium dicyanamide and guanidinium nitrate, and mixtures thereof.
  • the combustion gas yield is high, producing a large amount of nitrogen gas.
  • Alkali Li, Na, K
  • alkaline earth salts Mg, Ca, Sr, Ba
  • alkali or alkaline earth nitrates such as lithium nitrate, sodium nitrate, potassium nitrate, magnesium nitrate, calcium nitrate, strontium nitrate or barium nitrate
  • ammonium nitrate alkali metal or alkaline earth chlorates or perchlorates (such as lithium, sodium, potassium, magnesium -, calcium, strontium or barium chlorate and lithium, sodium, potassium, magnesium, calcium, strontium or barium perchlorate) and ammonium perchlorate and mixtures thereof.
  • potassium nitrate and strontium nitrate are used.
  • Strontium nitrate is non-hygroscopic, non-toxic and allows a high gas yield when burned. Potassium nitrate also has a low burning temperature.
  • Al 2 O 3 , TiO 2 and ZrO 2 in highly dispersed form or mixtures thereof are used as high-melting, substantially chemically inert slag scavengers, component (C) where Al 2 O 3 is a BET surface area (based on DIN 66131) of 100 +/- 15 m 2 / g (mp point about 2050 ° C), TiO 2 a BET surface area of 50 +/- 15 m 2 / g (mp point about 1850 ° C) and ZrO 2 a / BET surface area of 40 +/- 10 m 2 / g (mp point about 2700 ° C) have.
  • These highly dispersed oxides are commercially available, for example, under the trade names aluminum oxide C, titanium oxide P25 and VP zirconium oxide (Degussa AG).
  • pyrogenic oxides are prepared by reacting the metal chlorides with H 2 and O 2 in the appropriate molar ratio by gas phase reaction (flame hydrolysis). she have no pores and defined agglomerates, as is otherwise the case with the production in the wet process.
  • slag scavenger component (C)
  • component (C) is understood to mean refractory, essentially chemically inert metal oxides in highly dispersed form, i. these oxides have a much larger surface area than the oxides in their conventional form.
  • conventional Al 2 O 3 as ⁇ -oxide has a BET surface area of only 5-10 m 2 / g, conventional pigment TiO 2 a BET surface area of only 5-10 m 2 / g, and conventional ZrO 2 a BET Surface area of only 3-8 m 2 / g (for refractory products), whereas the metal oxides used in the gas generator propellants of the present invention have BET surface areas of from about 40 to about 100 m 2 / g, more preferably from about 50 to about 100 m 2 / g and in particular about 100 m 2 / g.
  • the slag scavengers of the present invention are characterized by their high melting point of about 1850 to about 2700 ° C from. These high melting points cause the slag scavengers not to melt during the reaction and thus act as solids.
  • the slag scavengers of the present invention are essentially chemically inert compounds, ie the slag scavengers of the present invention do not participate in the combustion reaction of the gas generator propellants to chemical reactions or only to a minor extent on the surface of the slag scavenger metal oxides.
  • the high-resolution space lattice ie the large inner surface of eg Al 2 O 3 , TiO 2 or ZrO 2 on the one hand causes by their inactivity, the cooling of the combustion products and stored on the other hand specially liquid and / or solid slag parts or particles that are formed during combustion ,
  • the tablet form, in which the gas generator propellant charges are used is maintained during and after the burn-up, or it is possible to easily filter any resulting fragments. This means that hardly any dust forms, which could escape during combustion from the gas generator propellant charge and thus from the gas generator housing.
  • the slag catchers work
  • Pulmonary dust-like particles have a diameter of about 6 ⁇ m or smaller.
  • alkali metal and alkaline earth metal carbonates such as sodium carbonate, potassium carbonate, magnesium carbonate, calcium carbonate, strontium carbonate or barium carbonate
  • alkali metal or alkaline earth metal oxides such as sodium, potassium, magnesium, calcium, strontium or barium oxide
  • Silicates such as hectorite
  • aluminates such as sodium beta-aluminate (Na 2 O 11 Al 2 O 3 ) or tricalcium aluminate (Ca 3 Al 2 O 6 )
  • aluminum silicates such as bentonites or zeolites
  • iron (III) oxide or mixtures thereof are used.
  • Component (D) serves to form an easily filterable slag during combustion of the gas generator fuel.
  • the slag former, component (D) may additionally act as a coolant.
  • the silicates, aluminates and aluminum silicates react with the alkali metal and Erdalkalimetalloxiden that arise during combustion.
  • the invention further relates to the use of catalysts based on platinum metals (Ru, Os, Rh, Ir, Pd, Pt) or metal alloys of platinum metals or copper on the highly dispersed slag scavenger carriers in the solid gas generator propellants of the present invention, in particular the use in fixed gas generator propellants for airbags.
  • platinum metals Ru, Os, Rh, Ir, Pd, Pt
  • metal alloys of platinum metals or copper on the highly dispersed slag scavenger carriers in the solid gas generator propellants of the present invention, in particular the use in fixed gas generator propellants for airbags.
  • a part of the slag trap (component (C)) can serve as a carrier on which a platinum metal or a metal alloy of platinum metals or copper in a catalytically effective layer thickness is applied.
  • Platinum metals include ruthenium (Ru), osmium (Os), rhodium (Rh), iridium (Ir), palladium (Pd), and platinum (Pt).
  • the catalysts used in the present invention are preferably based on Rh, Pd or Pt and in particular Pt.
  • metal alloys of platinum metals are all catalytically active metal alloys of the abovementioned platinum metals, preferably Pt / Pd and Pt / Rh alloys.
  • the metals or metal alloys of platinum metals are applied in a catalytically active layer thickness, preferably in a monatomic layer ("monolayer") on the support.
  • the catalysts are contained in only catalytic amounts in the gas generator propellant. Their proportion by weight of the component (C) is 0.1-5 wt .-%, preferably 0.2-1.2 wt .-% of the component (C).
  • Preferred catalysts are those in which the highly dispersed carrier is Al 2 O 3 and the metal is Pt, Pd or Cu, in particular Pt.
  • Suitable catalysts are available from Degussa AG, eg 1% Pt on gamma Al 2 O 3 or 1% Pd + Pt on gamma Al 2 O 3 .
  • the catalysts serve to control the reaction so that hardly toxic gaseous combustion products, such as carbon monoxide (CO), nitrogen oxides (NO x ) and ammonia (NH 3 ) are formed.
  • gaseous combustion products such as carbon monoxide (CO), nitrogen oxides (NO x ) and ammonia (NH 3 ) are formed.
  • the above-mentioned catalysts are particularly well suited for use in gas generator propellants in airbags.
  • the catalysts may be triggered, i. used airbags, as well as from unreleased, i. be recycled from old-vehicle airbags according to previously known procedures. This leads to a waste relief of the environment and allows the reuse of the catalyst metals.
  • the catalyst metal or the metal alloy is not oxidized during the burnup.
  • the catalyst need not be added as an additional component to the gas generator propellant, but the catalyst is part of an already present in the gas generator propellant component (component C)).
  • Component (A) is present in an amount of from about 20 to 60% by weight, preferably from about 28 to 52% by weight and in particular from about 45 to 51% by weight, component (B) in an amount of about 38 to about 63 wt .-%, preferably from about 38 to about 55 wt .-% and in particular from about 39 to 45 wt .-% before, component (C) in an amount of about 5 to 22 wt .-%, preferably from about 8 to 20% by weight and in particular from about 9 to 11% by weight and component (D), if present, in an amount of about 2 to 12% by weight, preferably from about 4 to 10% by weight .-% before, in each case based on the total composition of the gas generator propellant.
  • the gas generator fuel may further contain as component (E) a water-soluble binder at room temperature.
  • Preferred binders are cellulose compounds or polymers of one or more polymerizable olefinically unsaturated monomers.
  • examples of cellulose compounds are cellulose ethers, such as carboxymethylcellulose, methylcellulose ethers, in particular methylhydroxyethylcellulose.
  • a good usable methylhydroxyethylcellulose is CULMINAL® MHEC 30000 PR from Aqualon.
  • Suitable polymers having a binding effect are polyvinylpyrrolidone, polyvinyl acetate, Polyvinyl alcohol and polyvinyl butyral, eg Pioloform® B (Wacker Chemie, Burghausen).
  • component (E) a metal salt of stearic acid insoluble in water at room temperature, such as aluminum stearate, magnesium stearate, calcium stearate or zinc stearate, may also be used.
  • Graphite is also suitable as a binder.
  • Component (E) is present in an amount of from 0 to 2% by weight, and preferably from 0.3 to 0.8% by weight.
  • the binder, component (E) serves as a desensitizer and as a processing aid in the production of granules or pellets from the gas generator fuel. It also serves to reduce the hydrophilicity and to stabilize the gas generator propellant charges.
  • gas generant fuels Examples 1 to 57 of Table I below
  • gas generator propellants were prepared according to the following procedure:
  • the roughly premixed raw materials (components (A), (B), (C) and optionally (D) and (E)) were ground or precompressed by means of a ball mill.
  • the granulation of the gas generator fuel mixture was carried out in a vertical mixer by adding about 20% water while stirring and at a temperature increased to about 40 ° C. After brief flash-off, the resulting blend was rubbed at room temperature through a 1 mm screen through-hole machine. The granules thus obtained were dried for about 2 hours in a drying oven at 80 ° C.
  • the finished granulate of the gas generator fuel (particle size distribution 0-1 mm) was then pressed into tablets (pellets) using a rotary press. These gas generator propellant pellets were post-dried at 80 ° C in a drying oven.
  • the tablets or pellets from the gas generator fuel used in the gas generators can be prepared by known methods, such as extruding, extruding, in rotary presses or tableting machines.
  • the size of the pellets or tablets depends on the desired firing time in the particular application.
  • the gas generator fuel of the invention consists of non-toxic, easy to produce and inexpensive components whose processing is straightforward.
  • the less cost-effective component, namely, the catalyst metal, can be recycled by known methods.
  • the thermal stability of the components causes a good shelf life.
  • the ignitability of the mixtures is good. They burn quickly and deliver high gas yields with very low CO, NO x and NH 3 levels below the allowable limit.
  • the mixtures according to the invention are therefore particularly suitable for use as gas generants in the various airbag systems, as extinguishing agents or propellants.
  • Examples 1 to 57 below illustrate the invention, but do not limit it.
  • Examples 15, 18 and 21 are comparative examples using conventional ZrO 2 , TiO 2 and Al 2 O 3 .
  • Table I ⁇ / u>
  • the indexes specified in the table have the following meaning: 1 Titanium Dioxide P25, Degussa AG 2 Zirconium oxide VP, Degussa AG 3 Alumina C, Degussa AG 4 Titanium dioxide Kronos 3025, Kronos Titan GmbH 5 Zirconia, Merck 6 Alumina NO 615-30 II 24, Nabaltec 7 Oxide. Catalyst 1% Pt on gamma-alumina, Degussa AG 8th Oxide.
  • burn-offs were carried out in a practical gas generator housing for the 60-liter driver's airbag, with original dimensions, lighters and filter pack made of stainless steel.
  • the gas generator propellant weight used was 50 to 55 g, depending on the gas yield of the respective gas generator fuel formulation.
  • the pellets had a diameter of 4 to 6 mm, with a pellet height of 1.5 or 2.1 mm.
  • Gas yield and temperature are within the range favorable for gas generator propellants for airbags.
  • the measured values for CO, NO x and NH 3 given in the table above refer to a 60 liter can. These are good values for a non-optimized experimental gas generator.
  • compositions are those of Examples 14, 17 and 20.
  • thermodynamic data of the individual gas formulations were calculated on the oxygen balance surplus, which promised the least possible toxic gas evolution during combustion.

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Inorganic Chemistry (AREA)
  • Catalysts (AREA)
  • Air Bags (AREA)
  • Feeding, Discharge, Calcimining, Fusing, And Gas-Generation Devices (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)
  • Glass Compositions (AREA)

Claims (16)

  1. Agent propulseur pour générateur de gaz, comprenant
    (A) au moins un combustible choisi parmi le groupe se composant du nitrate de guanidine (GUNI, GuNO3), du dicyanamide, du dicyanamide d'ammonium, du dicyanamide de sodium (Na-DCA), du dicyanamide de cuivre, du dicyanamide de zinc, du dicyanamide de calcium (Ca-DCA), du dicyanamide de guanidinium (GDCA), du bicarbonate d'aminoguanidine (AGB), du nitrate d'aminoguanidine (AGN), du nitrate de triaminoguanidine (TAGN), de la nitroguanidine (NIGU), du dicyandiamide (DCD), d'azodicarbonamide (ADCA) ainsi que du tétrazole (HTZ), du 5-aminotétrazole (ATZ), du 5-nitro-1,2,4-triazole-3-one (NTO), des sels et des mélanges de ceux-ci,
    (B) au moins un nitrate alcalin ou alcalinoterreux, ou un nitrate, chlorate ou perchlorate d'ammonium,
    (C) au moins un piège de scorification fabriqué par hydrolyse à la flamme, avec un point de fusion élevé, essentiellement chimiquement inerte, choisi dans le groupe se composant de Al2O3 sous une forme très dispersée avec une surface spécifique de 100 +/-15 m2/g, TiO2 sous une forme très dispersée avec une surface spécifique de 50 +/- 15 m2/g et ZrO2 sous une forme très dispersée avec une surface spécifique de 40 +/- 10 m2/g, ou leurs mélanges.
  2. Agent propulseur pour générateur de gaz selon la revendication 1, le composant (A) étant présent en une quantité d'environ 20 à environ 60 % en poids, de préférence d'environ 28 à environ 52 % en poids et particulièrement d'environ 45 à environ 51 % en poids, le composant (B) étant présent en une quantité d'environ 38 à environ 63 % en poids, de préférence d'environ 38 à environ 55 % en poids et particulièrement d'environ 39 à environ 45 % en poids, le composant (C) étant présent en une quantité d'environ 5 à environ 22 % en poids, de préférence d'environ 8 à environ 20 % en poids et particulièrement d'environ 9 à environ 11 % en poids.
  3. Agent propulseur pour générateur de gaz selon la revendication 1 ou 2, le composant (A) étant choisi parmi le groupe se composant de la nitroguanidine, du 5-aminotétrazol, du dicyandiamide, du dicyanamide, du dicyanamide de sodium et de calcium et du nitrate de guanidinium, et de leurs mélanges.
  4. Agent propulseur pour générateur de gaz selon l'une quelconque des revendications 1 à 3, le composant (B) étant choisi parmi le groupe se composant des nitrates de sodium, de potassium ou de strontium.
  5. Agent propulseur pour générateur de gaz selon l'une quelconque des revendications 1 à 4, une partie du composant (C) servant de support, sur lequel est appliqué un métal du groupe du platine ou un alliage métallique à partir des métaux du groupe du platine ou de cuivre en une épaisseur de couche efficace du point de vue catalytique.
  6. Agent propulseur pour générateur de gaz selon la revendication 5, le métal du groupe du platine étant choisi parmi le ruthénium (Ru), l'osmium (Os), le rhodium (Rh), l'iridium (Ir), le palladium (Pd) ou le platine (Pt).
  7. Agent propulseur pour générateur de gaz selon la revendication 5, l'alliage métallique de métaux du groupe du platine étant choisi parmi les alliages de Pt/Pd et de Pt/Rh.
  8. Agent propulseur pour générateur de gaz selon l'une quelconque des revendications 5 à 7, la teneur pondérale du catalyseur au niveau du composant (C) étant de 0,1 à 5 % en poids, de préférence 0,2 à 1,2 % en poids.
  9. Agent propulseur pour générateur de gaz selon l'une quelconque des revendications 1 à 8, le composant (A) étant de la nitroguanidine, le composant (B) étant du nitrate de strontium et le composant (C) étant de l'Al2O3, du TiO2 ou du ZrO2, sous une forme très dispersée.
  10. Agent propulseur pour générateur de gaz selon la revendication 9, le composant (A) étant présent en une quantité de 45 à 51 % en poids, le composant (B) étant présent en une quantité de 39 à 45 % en poids, le composant (C) étant présent en une quantité de 9 à 11 % en poids, par rapport à la composition totale.
  11. Agent propulseur pour générateur de gaz selon l'une quelconque des revendications 1 à 9, dans lequel est également présent un composant (D) au moins un fondant de scorification choisi parmi les carbonates de métaux alcalins et de métaux alcalinoterreux, les oxydes de métaux alcalins ou de métaux alcalinoterreux, les silicates, les aluminates, les aluminosilicates, le nitrure de silicium (Si3N4) et les oxydes de fer (III).
  12. Agent propulseur pour générateur de gaz selon la revendication 11, le composant (D) étant présent en une quantité d'environ 2 à 12 % en poids, de préférence d'environ 4 à 10 % en poids.
  13. Agent propulseur pour générateur de gaz selon l'une quelconque des revendications 1 à 12, dans lequel est également présent un composant (E), au moins un liant soluble dans l'eau à température ambiante.
  14. Agent propulseur pour générateur de gaz selon la revendication 13, le liant étant choisi parmi le groupe se composant des composés de la cellulose, des polymères d'un ou de plusieurs monomères oléfiniques insaturés polymérisables, d'un sel métallique d'acide stéarique insoluble dans l'eau à température ambiante ou le graphite.
  15. Agent propulseur pour générateur de gaz selon la revendication 13 ou 14, le liant étant présent en une quantité de 0 à 2 % en poids, de préférence de 0,3 à 0,8 % en poids.
  16. Utilisation d'agent propulseur pour générateur de gaz selon l'une quelconque des revendications 1 à 15 comme agent de production d'un gaz dans les coussins d'air gonflables, comme agent d'extinction ou agent propulseur.
EP99919100A 1998-03-20 1999-03-17 Agents propulseurs de generateurs de gaz Expired - Lifetime EP1064242B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19812372A DE19812372C2 (de) 1998-03-20 1998-03-20 Gasgeneratortreibstoffe
DE19812372 1998-03-20
PCT/DE1999/000782 WO1999048843A1 (fr) 1998-03-20 1999-03-17 Agents propulseurs de generateurs de gaz

Publications (2)

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EP1064242A1 EP1064242A1 (fr) 2001-01-03
EP1064242B1 true EP1064242B1 (fr) 2006-10-11

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EP99919100A Expired - Lifetime EP1064242B1 (fr) 1998-03-20 1999-03-17 Agents propulseurs de generateurs de gaz

Country Status (8)

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EP (1) EP1064242B1 (fr)
JP (1) JP2002507542A (fr)
KR (1) KR20010041919A (fr)
AT (1) ATE342246T1 (fr)
AU (1) AU3699999A (fr)
CZ (1) CZ297313B6 (fr)
DE (2) DE19812372C2 (fr)
WO (1) WO1999048843A1 (fr)

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DE102008022749A1 (de) * 2008-05-08 2009-11-12 Trw Airbag Systems Gmbh Gasgenerator

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Publication number Priority date Publication date Assignee Title
DE10064285C1 (de) * 2000-12-22 2002-10-17 Nigu Chemie Gmbh Gasgeneratortreibstoff-Zusammensetzung und deren Verwendung
CN100376515C (zh) * 2005-03-28 2008-03-26 东方久乐汽车安全气囊有限公司 一种产气组合物及其制备方法
CZ301335B6 (cs) * 2005-06-15 2010-01-20 Explosia, A. S. Pyrotechnické smesi pro predpínace bezpecnostních pásu
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JP6231876B2 (ja) * 2013-12-27 2017-11-15 日本工機株式会社 移動体搭載用エアロゾル消火装置及びこれに用いるエアロゾル消火薬剤
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CZ297313B6 (cs) 2006-11-15
DE19812372A1 (de) 1999-09-30
WO1999048843A1 (fr) 1999-09-30
KR20010041919A (ko) 2001-05-25
DE19812372C2 (de) 2001-10-04
DE59913910D1 (de) 2006-11-23
CZ20003417A3 (cs) 2001-02-14
AU3699999A (en) 1999-10-18
JP2002507542A (ja) 2002-03-12
EP1064242A1 (fr) 2001-01-03
ATE342246T1 (de) 2006-11-15

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