EP0930284B1 - Matériau solide ablatable pour générateur de gaz hybride - Google Patents
Matériau solide ablatable pour générateur de gaz hybride Download PDFInfo
- Publication number
- EP0930284B1 EP0930284B1 EP99400090A EP99400090A EP0930284B1 EP 0930284 B1 EP0930284 B1 EP 0930284B1 EP 99400090 A EP99400090 A EP 99400090A EP 99400090 A EP99400090 A EP 99400090A EP 0930284 B1 EP0930284 B1 EP 0930284B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- binder
- ablatable
- solid
- organic
- material according
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 239000011343 solid material Substances 0.000 title claims description 8
- 239000000463 material Substances 0.000 claims abstract description 41
- 239000011230 binding agent Substances 0.000 claims abstract description 36
- 239000007787 solid Substances 0.000 claims abstract description 21
- 230000015572 biosynthetic process Effects 0.000 claims abstract description 13
- RRIGVQQUVAETIG-UHFFFAOYSA-N 1,2,3,4,6,7,8,9-octahydro-[1,2,4,5]tetrazino[1,2-a][1,2,4,5]tetrazine Chemical compound C1NNCN2CNNCN21 RRIGVQQUVAETIG-UHFFFAOYSA-N 0.000 claims abstract description 7
- ULRPISSMEBPJLN-UHFFFAOYSA-N 2h-tetrazol-5-amine Chemical compound NC1=NN=NN1 ULRPISSMEBPJLN-UHFFFAOYSA-N 0.000 claims abstract description 5
- 229920000877 Melamine resin Polymers 0.000 claims abstract description 4
- JDSHMPZPIAZGSV-UHFFFAOYSA-N melamine Chemical compound NC1=NC(N)=NC(N)=N1 JDSHMPZPIAZGSV-UHFFFAOYSA-N 0.000 claims abstract description 4
- 230000002829 reductive effect Effects 0.000 claims abstract 5
- HUUBMTMJIQHAEN-UHFFFAOYSA-N triazole-1,4-diamine Chemical group NC1=CN(N)N=N1 HUUBMTMJIQHAEN-UHFFFAOYSA-N 0.000 claims abstract 2
- 239000000945 filler Substances 0.000 claims description 11
- 230000001590 oxidative effect Effects 0.000 claims description 11
- 229920000642 polymer Polymers 0.000 claims description 8
- 239000000654 additive Substances 0.000 claims description 6
- 229920001228 polyisocyanate Polymers 0.000 claims description 5
- 239000005056 polyisocyanate Substances 0.000 claims description 5
- 239000002131 composite material Substances 0.000 claims description 4
- 229920000768 polyamine Polymers 0.000 claims description 4
- 239000003822 epoxy resin Substances 0.000 claims description 3
- 229930195733 hydrocarbon Natural products 0.000 claims description 3
- 150000002430 hydrocarbons Chemical class 0.000 claims description 3
- 229920000647 polyepoxide Polymers 0.000 claims description 3
- 229920001169 thermoplastic Polymers 0.000 claims description 3
- 239000004416 thermosoftening plastic Substances 0.000 claims description 3
- 239000004215 Carbon black (E152) Substances 0.000 claims description 2
- 125000003158 alcohol group Chemical group 0.000 claims description 2
- WATFYPAEWCALBK-UHFFFAOYSA-N 5-methyl-5-(5-methyltetrazol-5-yl)tetrazole Chemical compound CC1(N=NN=N1)C1(N=NN=N1)C WATFYPAEWCALBK-UHFFFAOYSA-N 0.000 claims 2
- -1 dimethyl bitetrazole Chemical compound 0.000 abstract description 6
- 239000012766 organic filler Substances 0.000 abstract description 3
- 239000006259 organic additive Substances 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 31
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 12
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 9
- 238000002679 ablation Methods 0.000 description 7
- 238000002485 combustion reaction Methods 0.000 description 7
- 239000000203 mixture Substances 0.000 description 6
- 239000007800 oxidant agent Substances 0.000 description 5
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 4
- 229910052757 nitrogen Inorganic materials 0.000 description 4
- 239000001301 oxygen Substances 0.000 description 4
- 229910052760 oxygen Inorganic materials 0.000 description 4
- 230000001681 protective effect Effects 0.000 description 4
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 3
- 229910002091 carbon monoxide Inorganic materials 0.000 description 3
- PXIPVTKHYLBLMZ-UHFFFAOYSA-N Sodium azide Chemical compound [Na+].[N-]=[N+]=[N-] PXIPVTKHYLBLMZ-UHFFFAOYSA-N 0.000 description 2
- 229910002092 carbon dioxide Inorganic materials 0.000 description 2
- 239000001569 carbon dioxide Substances 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 125000003055 glycidyl group Chemical group C(C1CO1)* 0.000 description 2
- 238000005469 granulation Methods 0.000 description 2
- 230000003179 granulation Effects 0.000 description 2
- 239000003999 initiator Substances 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 239000003380 propellant Substances 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- 150000003852 triazoles Chemical class 0.000 description 2
- 238000011144 upstream manufacturing Methods 0.000 description 2
- YMRIDJQAEZFTSC-UHFFFAOYSA-N 2,3-dihydro-1h-tetrazole Chemical compound N1NC=NN1 YMRIDJQAEZFTSC-UHFFFAOYSA-N 0.000 description 1
- 239000000020 Nitrocellulose Substances 0.000 description 1
- SNIOPGDIGTZGOP-UHFFFAOYSA-N Nitroglycerin Chemical compound [O-][N+](=O)OCC(O[N+]([O-])=O)CO[N+]([O-])=O SNIOPGDIGTZGOP-UHFFFAOYSA-N 0.000 description 1
- 239000000006 Nitroglycerin Substances 0.000 description 1
- BKHJHGONWLDYCV-UHFFFAOYSA-N [C]=O.[C] Chemical compound [C]=O.[C] BKHJHGONWLDYCV-UHFFFAOYSA-N 0.000 description 1
- 239000003570 air Substances 0.000 description 1
- 150000001540 azides Chemical class 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- 150000002118 epoxides Chemical class 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 229960003711 glyceryl trinitrate Drugs 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 239000012948 isocyanate Substances 0.000 description 1
- IQPQWNKOIGAROB-UHFFFAOYSA-N isocyanate group Chemical group [N-]=C=O IQPQWNKOIGAROB-UHFFFAOYSA-N 0.000 description 1
- 150000002513 isocyanates Chemical class 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 229920001220 nitrocellulos Polymers 0.000 description 1
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 229920000620 organic polymer Polymers 0.000 description 1
- 239000008188 pellet Substances 0.000 description 1
- 229920000515 polycarbonate Polymers 0.000 description 1
- 239000004417 polycarbonate Substances 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 239000004449 solid propellant Substances 0.000 description 1
- 239000002341 toxic gas Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C06—EXPLOSIVES; MATCHES
- C06B—EXPLOSIVES OR THERMIC COMPOSITIONS; MANUFACTURE THEREOF; USE OF SINGLE SUBSTANCES AS EXPLOSIVES
- C06B45/00—Compositions or products which are defined by structure or arrangement of component of product
- C06B45/04—Compositions or products which are defined by structure or arrangement of component of product comprising solid particles dispersed in solid solution or matrix not used for explosives where the matrix consists essentially of nitrated carbohydrates or a low molecular organic explosive
- C06B45/06—Compositions or products which are defined by structure or arrangement of component of product comprising solid particles dispersed in solid solution or matrix not used for explosives where the matrix consists essentially of nitrated carbohydrates or a low molecular organic explosive the solid solution or matrix containing an organic component
- C06B45/10—Compositions or products which are defined by structure or arrangement of component of product comprising solid particles dispersed in solid solution or matrix not used for explosives where the matrix consists essentially of nitrated carbohydrates or a low molecular organic explosive the solid solution or matrix containing an organic component the organic component containing a resin
-
- 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
Definitions
- the present invention relates to the field of compositions which may constitute loads for modular thrusters and for generators gas pyrotechnics intended to inflate cushions protection, in particular those for the occupants of a motor vehicle. More specifically the invention relates to solid materials which can constitute ablatable loads in hybrid generators with solid loading. It is said of a load that it is ablatable when it cannot burn and generate by combustion of gaseous molecules with only a contribution oxidizer exterior.
- pyrotechnic gas generators for which all of the gases used to inflate the protective cushion comes from the combustion of a pyrotechnic charge.
- Two large families of pyrotechnic compositions are generally used to constitute these loads.
- a first family relates to compositions based on mineral azides and especially sodium azide. These compositions have the disadvantage of providing, by combustion, large amounts of hot solid residue which must be filtered to prevent them from entering the airbag.
- a second family concerns propellant powders which can be based on nitrocellulose and nitroglycerin or based on oxidizing compound coated with a reducing organic binder. These propellant powders provide little, if any at all, solid residues but present the major drawback of having very high combustion temperatures.
- hybrid gases containing both a charge solid pyrotechnics and a pressurized gas reserve in which the gases from the combustion of the solid charge dilutes when contained gases in this reserve are inert, or even end up burn when the gases in this reserve are oxidants.
- advantageously used solid fuel loads under oxygen such as described for example in European patent applications EP-A-0 768 218 or EP-A-0 779 260.
- hybrid generators containing as a component pyrotechnics a simple pyrotechnic initiator, and also containing a reserve of oxidizing gas under pressure which is usually oxygen and a solid loading made up not of a material fuel under oxygen but with an ablatable material.
- a reserve of oxidizing gas under pressure which is usually oxygen and a solid loading made up not of a material fuel under oxygen but with an ablatable material.
- Such solid-load hybrid generators ablatable and not combustible are for example described in patent application PCT / FR 97/01260 or also in American patents US-A-5,509,981 and US-A-5,619,011.
- ablatable materials which are described in these patents and which is based on highly nitrogenous compounds and organic polymers, make it possible to obtain ablatable materials supplying at a moderate temperature gases free from solid residue, but these gases sometimes contain too high nitrogen oxides and carbon monoxide carbon which are toxic gases and moreover the ablation speed of the materials thus obtained is not always sufficient with regard to the requirements of motor vehicle manufacturers.
- ablatable solid materials and usable in gas generators intended for inflate protective cushions for occupants of a motor vehicle i.e. of materials solids with velocity and temperature of ablation meeting the standards of the manufacturers of motor vehicles and thus supplying gases essentially constituted by nitrogen and by carbon dioxide and practically free of residue solids, nitrogen oxides and carbon monoxide.
- gases essentially constituted by nitrogen and by carbon dioxide and practically free of residue solids, nitrogen oxides and carbon monoxide can also be used to constitute loads of modular thrusters and in particular downstream loading "bichambre" thrusters including the upstream chamber includes a self-fueling charge generating a gas oxidant, the variation of the combustion pressure in this upstream chamber for modulating the thrust of these thrusters.
- the object of the present invention is specifically to offer materials that meet on all points to these needs.
- the ablatable solid material must be essentially reducing and must present imperatively a formation enthalpy ⁇ Hf clearly positive, at least equal to 1250kJ / kg.
- the usable loads are nitrogen reducing organic charges having a enthalpy of positive formation.
- the organic binder used is a binder having a negative formation enthalpy or weakly positive, as is particularly the case for thermoplastic hydrocarbon polymers and for polymers based on a crosslinked epoxy resin by a polyamine
- the weight content of binder by relative to the total weight of the material will advantageously between 4% and 10%, preferably between 6% and 8%.
- the material will be put in the form of blocks extruded using a solvent for the phase extrusion, either in the form of pellets by solvent-free granulation and compression.
- the organic binder used is a binder having a strongly positive enthalpy of formation as for example the case for polyazides with alcohol functionality crosslinked with a polyisocyanate
- this binder at a weight content between 4% and 80% of the total weight of the material and preferably between 20% and 60%.
- Load organic reducing agent will then preferably be chosen from the group consisting of dimethyl bitetrazole and by tetraformaltrisazine which react little or no with isocyanate groups.
- this second group of binders the material will be generally put in the form of extruded blocks, the extrusion doing without solvent before completion of the crosslinking.
- Other shaping techniques remain however possible and in particular the granulation followed by compression when the rate of binder is relatively weak.
- the materials according to the invention find their preferred application in gas generators ablatable solid-loading hybrids for inflate protective cushions for occupants of a motor vehicle.
- ablatable materials according to the invention are so composite solid materials that contain basically an organic binder and a filler organic so as not to produce by ablation of solid residues. They may optionally contain small amounts of additives, these additives do not with no oxidizing groups so that the material remains completely ablatable and does not become combustible part.
- the organic charge is a charge organic reducing nitrogen with enthalpy of formation positive.
- Table 1 gives the names, formulas, structures and enthalpies of ⁇ Hf formation of the different fillers that can be used in the context of the invention.
- the first family includes enthalpy binders negative or very weakly positive, in practice less than 200 kJ / kg.
- This family includes in particular polymers based on epoxy resin crosslinked by a polyamine and polymers thermoplastic hydrocarbons.
- an ablatable material according to the invention is made from a binder belonging to this first family, it is only or essentially the reducing organic charge which brings the enthalpy of positive material formation.
- the latter will contain therefore little binder, in practice from 4 to 10% by weight, preferably from 6 to 8% by weight relative to the total weight of the material.
- the second family includes enthalpy binders of highly positive training, in practice at less close to 800kJ / kg.
- This family includes especially alcohol-functional polyazides crosslinked with a polyisocyanate.
- an ablatable material according to the invention is made from a binder belonging to this second family, it is both the binder and the reducing organic charge which provide the enthalpy of positive formation of the material.
- the latter can therefore contain a lot of binder, in practice from 4 to 80% by weight, preferably between 20 and 60%, relative to the total weight of said material. But it is once again emphasized that, even in this case, the binder cannot, by itself, constitute all of the ablatable material, in particular for questions of ablation speed.
- the organic reducing charges which do not contain an amino-NH 2 group reactive with respect to the isocyanate -NCO groups, that is to say dimethyl bitetrazole and tetraformaltrisazine, will be preferred.
- the following examples illustrate, without limitation, certain possibilities for implementing the invention.
- hollow extruded cylindrical blocks were made at from the following three compositions:
- ablatable materials according to the invention allow well when they are used in hybrid generators containing gases oxidants, to supply at moderate temperatures gases clean, free of solid residues, and non-toxic, especially when the oxidant gas / solid weight ratio ablatable is high enough.
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Molecular Biology (AREA)
- Crystallography & Structural Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- Dispersion Chemistry (AREA)
- Air Bags (AREA)
- Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)
- Compositions Of Oxide Ceramics (AREA)
- Glass Compositions (AREA)
- Feeding, Discharge, Calcimining, Fusing, And Gas-Generation Devices (AREA)
- Treating Waste Gases (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Description
Les exemples qui suivent illustrent, à titre non limitatif, certaines possibilités de mise en oeuvre de l'invention.
- liant : époxyde réticulé par une polyamine : 6% en poids
- charge : 5-aminotétrazole : 94% en poids.
- liant : polyazoture de glycidyle à fonctions OH réticulées par un polyisocyanate : 55% en poids.
- charge : diméthyl bitétrazole : 45% en poids.
- liant : polyazoture de glycidyle à fonctions OH réticulées par un polyisocyanate : 55% en poids.
- charge : 5-amino tétrazole: 45% en poids.
- ω =
- rapport pondéral air/solide ablatable.
- Ta =
- température d'ablation en °C.
- Rdt global =
- rendement gazeux en litres/gramme du chargement global du générateur hybride (air et solide ablatable).
- Rdt abl. =
- rendement gazeux en litres par gramme du seul chargement solide ablatable du générateur hybride.
- % rés. =
- pourcentage pondéral de résidus solides dans les gaz.
- COppm =
- teneur gazeuse en monoxyde de carbone exprimée en ppm dans un volume de 2,5m3, à partir d'un coussin de 60 litres gonflé par les gaz provenant du générateur.
- NOxppm =
- teneur gazeuse en oxydes d'azote exprimée en ppm dans un volume de 2,5m3 à partir d'un coussin de 60 litres gonflé par les gaz provenant du générateur.
| Exemple 1 | ||||
| ω | 12,35 | 7,14 | 5,38 | 4,29 |
| Ta | 830 | 1260 | 1549 | 1803 |
| Rdt global | 3,16 | 4,42 | 5,26 | 6,01 |
| Rdt abl. | 42 | 35,4 | 33,5 | 31,7 |
| % rés. | 0 | 0 | 0 | 0 |
| COppm | 0 | 0 | 0 | 0 |
| NOxppm | 1 | 9 | 18 | 25 |
| Exemple 2 | ||||
| ω | 12,35 | 7,14 | 5,38 | 4,29 |
| Ta | 1267 | 1900 | 2276 | 2214 |
| Rdt global | 4,37 | 6,16 | 7,25 | 7,30 |
| Rdt abl. | 58 | 50,5 | 46,2 | 38,6 |
| % rés. | 0 | 0 | 0 | 0 |
| COppm | 0 | 0 | 83 | 376 |
| NOxppm | 10 | 32 | 13 | 0 |
| Exemple 3 | ||||
| ω | 12,37 | 7,16 | 5,37 | 4,296 |
| Ta | 1074 | 1620 | 1981 | 2258 |
| Rdt global | 3,83 | 5,33 | 6,42 | 7,25 |
| Rdt abl. | 28,8 | 65,3 | 40,9 | 38,4 |
| % rés. | 0 | 0 | 0 | 0 |
| COppm | 0 | 0 | 3 | 45 |
| NOxppm | 6,7 | 34 | 47 | 50 |
Claims (7)
- Matériau solide ablatable composite pour les générateurs pyrotechniques de gaz destinés à gonfler des coussins de protection pour les occupants d'un véhicule automobile, constitué principalement par un liant organique, par au moins une charge réductrice organique et par des additifs, caractérisé en ce que :i) les charges réductrices organiques sont choisies dans le groupe constitué par le diamino-3,5 triazole, le diméthyl bitétrazole, la tétraformaltrisazine, la mélamine et le 5-aminotétrazole,ii) la teneur pondérale du liant par rapport au poids total du matériau est comprise entre 4% et 80%,iii) l'enthalpie de formation ΔHf du dit matériau est au moins égale à 1250 kJ/kg,iv) les dits additifs ne comportent pas de groupes oxydants.
- Matériau selon la revendication 1 caractérisé en ce que le liant est choisi dans le groupe constitué par les polymères hydrocarbonés thermoplastiques et par les polymères à base de résine époxy réticulée par une polyamine et en ce que la teneur pondérale du liant par rapport au poids total du matériau est comprise entre 4 et 10 %.
- Matériau selon la revendication 2 caractérisé en ce que la teneur pondérale du liant par rapport au poids total du matériau est comprise entre 6% et 8%.
- Matériau selon la revendication 1 caractérisé en ce que le liant est choisi dans le groupe constitué par les polyazotures à fonctionnalité alcool réticulés par un polyisocyanate.
- Matériau selon la revendication 4 caractérisé en ce que la teneur pondérale du liant par rapport au poids total du matériau est comprise entre 20% et 60%.
- Matériau selon la revendication 5 caractérisé en ce que la dite charge réductrice organique est choisie dans le groupe constitué par le diméthyl bitétrazole et la tétraformaltrisazine.
- Utilisation d'un matériau solide ablatable composite, selon l'une quelconque des revendications 1 à 6, pour la réalisation d'un chargement solide ablatable pour un générateur de gaz hybride contenant un gaz oxydant, destiné à gonfler des coussins de protection pour les occupants d'un véhicule automobile.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR9800495 | 1998-01-19 | ||
| FR9800495A FR2773797B1 (fr) | 1998-01-19 | 1998-01-19 | Materiau solide ablatable pour generateur de gaz hybride |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0930284A1 EP0930284A1 (fr) | 1999-07-21 |
| EP0930284B1 true EP0930284B1 (fr) | 2003-04-16 |
Family
ID=9521896
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP99400090A Expired - Lifetime EP0930284B1 (fr) | 1998-01-19 | 1999-01-15 | Matériau solide ablatable pour générateur de gaz hybride |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP0930284B1 (fr) |
| AT (1) | ATE237566T1 (fr) |
| DE (1) | DE69906830T2 (fr) |
| FR (1) | FR2773797B1 (fr) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4131486B2 (ja) * | 1999-07-09 | 2008-08-13 | 日本化薬株式会社 | 自動発火性エンハンサー剤組成物 |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE977699C (de) * | 1960-09-04 | 1968-06-20 | Bundesrep Deutschland | Treibstoffkombination fuer Hybridraketen |
| US3664131A (en) * | 1966-02-01 | 1972-05-23 | United Aircraft Corp | Hybrid rocket fuel and process of propulsion using tetraformaltriazine |
| US3725152A (en) * | 1971-05-03 | 1973-04-03 | Dow Chemical Co | Polymeric binders for use in hybrid rocket propellents |
| EP0520104A1 (fr) * | 1991-06-27 | 1992-12-30 | Thiokol Corporation | Compositions de propergol non auto-déflagrant pour utilisation dans un moteur de fusée hybride à tour de régression élevée |
| US5913537A (en) * | 1995-06-09 | 1999-06-22 | Trw Vehicle Safety Systems Inc. | Hybrid inflator including non-metallic nitrogen containing ignitable material |
| US5507891A (en) * | 1995-08-11 | 1996-04-16 | Alliant Techsystems Inc. | Propellant composition for automotive safety applications |
| JPH09183682A (ja) * | 1995-12-13 | 1997-07-15 | Morton Internatl Inc | 貯蔵された酸化性ガスを含むハイブリッド膨張器に使用される燃料組成物 |
-
1998
- 1998-01-19 FR FR9800495A patent/FR2773797B1/fr not_active Expired - Fee Related
-
1999
- 1999-01-15 EP EP99400090A patent/EP0930284B1/fr not_active Expired - Lifetime
- 1999-01-15 AT AT99400090T patent/ATE237566T1/de not_active IP Right Cessation
- 1999-01-15 DE DE69906830T patent/DE69906830T2/de not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| ATE237566T1 (de) | 2003-05-15 |
| DE69906830D1 (de) | 2003-05-22 |
| DE69906830T2 (de) | 2004-03-04 |
| FR2773797B1 (fr) | 2000-02-18 |
| EP0930284A1 (fr) | 1999-07-21 |
| FR2773797A1 (fr) | 1999-07-23 |
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