US20110041969A1 - Gas-generating pyrotechnic compound and production process - Google Patents

Gas-generating pyrotechnic compound and production process Download PDF

Info

Publication number
US20110041969A1
US20110041969A1 US12/598,323 US59832308A US2011041969A1 US 20110041969 A1 US20110041969 A1 US 20110041969A1 US 59832308 A US59832308 A US 59832308A US 2011041969 A1 US2011041969 A1 US 2011041969A1
Authority
US
United States
Prior art keywords
compound
advantageously
weight
oxygen
plasticizer
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.)
Abandoned
Application number
US12/598,323
Other languages
English (en)
Inventor
Frederic Marlin
Bernard Thibieroz
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Safran Ceramics SA
Original Assignee
SNPE Materiaux Energetiques SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by SNPE Materiaux Energetiques SA filed Critical SNPE Materiaux Energetiques SA
Assigned to SNPE MATERIAUX ENERGETIQUES reassignment SNPE MATERIAUX ENERGETIQUES ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: THIBIEROZ. BERNARD, MARLIN, FREDERIC
Publication of US20110041969A1 publication Critical patent/US20110041969A1/en
Assigned to SME reassignment SME CHANGE OF NAME (SEE DOCUMENT FOR DETAILS). Assignors: SNPE MATERIAUX ENERGETIQUES
Assigned to HERAKLES reassignment HERAKLES CHANGE OF NAME (SEE DOCUMENT FOR DETAILS). Assignors: SME
Abandoned legal-status Critical Current

Links

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
    • C06B29/00—Compositions containing an inorganic oxygen-halogen salt, e.g. chlorate, perchlorate
    • C06B29/22—Compositions containing an inorganic oxygen-halogen salt, e.g. chlorate, perchlorate the salt being ammonium perchlorate
    • 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

Definitions

  • the present invention provides pyrotechnic gas generator compounds and also a method of obtaining them.
  • Said pyrotechnic compounds have:
  • the present invention is situated in the technical field of pyrotechnic gas generation. It finds application more particularly in vehicle occupant protection systems offering protection by means of airbags, which are inflated by the combustion gases from pyrotechnic compounds.
  • composition having a high inflation power, a high inflation rate per unit area, and without particulates has many advantages in terms of operation and in terms of the miniaturization of gas generators for an airbag system. This miniaturization is required for reasons of cost, weight, and integration within vehicles.
  • compositions of this kind referred to as double base compositions, containing nitrocellulose and nitroglycerine, were employed in the 1990s in the form of monolithic blocks. Details of formulations and of double base propellant compounds are found in the Davenas publication “Technologie des propergols solides” [Solid propellant technology], Masson edition 1989, and an example of use of these compounds is found in patent application FR 2 853 872.
  • the formulations have a high gas yield, a relatively high combustion temperature, and a low level of particulates.
  • the oxygen balance is the weight percentage of oxygen given off (positive value) or absorbed (negative value) in the combustion reaction of an ingredient.
  • a CH 2 group a basic component in aliphatic polymers, has an oxygen balance of ⁇ 343%. This is because three oxygen atoms, with a molar weight of 48 g, are needed to balance the combustion of the 14 g/mol of CH 2 .
  • compositions based on silicone binder were subsequently proposed.
  • Compositions based on “RTV” (“room-temperature vulcanizable”) binder and potassium perchlorate were described in patent applications FR 2 190 776 and FR 2 213 254.
  • Patent application FR 2 728 562 describes an improved version of these products, which can be manufactured by a continuous mixing and extrusion method.
  • the silicone binder is in combination with a mixture of ammonium perchlorate and sodium nitrate, said sodium nitrate serving as a chlorine scavenger.
  • the compositions in accordance with these documents exhibit an acceptable gas yield, a high combustion temperature, and a high combustion rate. The inflation rate per unit area is therefore relatively high.
  • compositions based on nitrocellulose and nitroglycerine have the advantage of being very temperature-stable and of having an oxygen balance which can be regulated in order to observe the standards relating to toxicity of gaseous effluents.
  • These compositions have the disadvantage of emitting a high level of particulates (approximately 30%), more particularly sodium chloride and silica, and this necessitates the use of a bag with a high thickness and a protective coating on the internal face of said bag.
  • Patent application EP 1 216 977 describes a solventlessly extrudable composition essentially comprising an oxygen-containing hydrocarbon binder having two components (an elastomer (rubber) and a plasticizer), a nitrogenous organic compound, and oxidizing charges.
  • the oxidizing charges are ammonium perchlorate and a chlorine scavenger, which may be sodium nitrate.
  • the sodium nitrate is present at approximately 15% to 20% by weight in the composition. Its role is to trap the chlorine from the ammonium perchlorate to form sodium chloride.
  • This composition has a high combustion temperature and also an inflation power and a rate per unit area that are of the same order of magnitude as those of the silicone bases, owing to a slightly lower combustion rate and a lower level of particulates.
  • compositions which produce few particulates and little toxic effluent (with the aim of increasing the inflation power and the inflation rate per unit area, in order to reduce the volumes, weights and costs of the gas generators for airbag systems), it being possible for these compositions to be advantageously shaped by solventless extrusion, which allows the production of a monolithic form which facilitates charging, improving the charge density of the generator. Moreover, the absence of solvent prevents the emission of VOCs (volatile organic compounds).
  • the gas generator can be smaller, compact, and less expensive. Moreover, in spite of a high temperature of the combustion gases, the absence of particles, the progressive nature of the deployment of the gas rate, which is associated with the operation of a monolithic block, and the moderation of the energy released, owing to the low weight of pyrotechnic product required, ought to allow the use of bags with a moderate or low thickness.
  • the set objective of improvement has been attained.
  • the inventors presently propose pyrotechnic compounds which are highly performing, with reference to the above specifications, and pyrotechnic compounds whose performance is better than that of those compounds corresponding to the compositions of patent application EP 1 216 977.
  • the pyrotechnic compounds of the invention have a composition which is like that of the compounds according to said patent application EP 1 216 977, in that it comprises:
  • the pyrotechnic gas generator compounds of the invention accordingly comprise, in their composition, an oxidizing charge (without carbon) and an oxygen-containing hydrocarbon binder, of the above types.
  • the oxidizing charge in question which is inorganic (without carbon), which comprises at least one inorganic perchlorate, does not contain a chlorine scavenger, and said at least one oxygen-containing plasticizer for the elastomer is composed of:
  • Said at least one present original oxygen-containing plasticizer is composed advantageously of at least one plasticizer having the properties set out above. Mixtures of plasticizers of this kind with other oxygen-containing plasticizers (such as dioctyl adipate and/or dioctyl azelate) may, however, also be present.
  • other oxygen-containing plasticizers such as dioctyl adipate and/or dioctyl azelate
  • the inventors have demonstrated that it is possible to compensate the suppression of the complementary oxidizing charge constituted by the chlorine scavenger (more particularly sodium nitrate), in accordance with the teaching of patent application EP 1 216 977, by the presence of a new oxygen-containing plasticizer, which provides the amount of oxygen needed for effective combustion, thereby preventing the production of CO (whose concentration must be limited in accordance with the standards in force, for the type of application in question). This result was in no way gained beforehand.
  • the chlorine scavenger more particularly sodium nitrate
  • the compounds of the invention generally have the disadvantage of emitting hydrogen chloride. At the end of combustion, said hydrogen chloride undergoes condensation with the water formed by the combustion, and may be trapped by the bag.
  • the level of hydrogen chloride emitted by the compounds according to the invention is approximately 0.2 g/g.
  • the bag may be coated with chlorine scavengers.
  • the pyrotechnic gas generator compounds of the invention are therefore characterized in that their composition does not contain a chlorine scavenger (complementary oxidizing agent), but comprises at least one specific oxygen-containing plasticizer (which compensates for the absence of said complementary oxidizing agent).
  • Said at least one specific oxygen-containing plasticizer is advantageously selected from the class of oxygen-containing diesters, more particularly diesters containing ether functions.
  • the aim below is to provide, in a way which is in no sense limitative, specific information on each of the constituents of said compounds, and also on the amount in which they are each employed.
  • the oxidizing charge comprises at least one inorganic perchlorate. It represents generally from 64% to 94% by weight of the total weight of the compound, advantageously from 72% to 82% by weight of said total weight. This is the main constituent of the compounds of the invention.
  • Said oxidizing charge advantageously comprises potassium perchlorate and/or ammonium perchlorate.
  • Said oxidizing charge very advantageously comprises ammonium perchlorate. With preference it is composed of ammonium perchlorate.
  • Said ammonium perchlorate is advantageously employed at a plurality of particle sizes, in order to enhance incorporation and distribution in the polymer and to reduce the toxicity of the gaseous effluents during combustion.
  • the crosslinked, oxygen-containing hydrocarbon binder represents generally from 6% to 20% by weight of the total weight of the compound. It represents advantageously from 8% to 16% by weight of the total weight. It comprises the crosslinked elastomer and said at least one original oxygen-containing plasticizer of the invention.
  • the elastomer in question is an elastomer of high molecular weight: Mw>200 000 g/mol. It is preferably selected from the class of polyesters and polyacrylates.
  • the polyacrylates may have reactive chlorine/carboxyl, chlorine, hydroxyl or epoxy end groups.
  • the polyesters may have reactive hydroxyl end groups. Advantageously they have such reactive hydroxyl end groups.
  • the elastomer present in the composition of the compounds of the invention has been crosslinked via its reactive functions by at least one crosslinking agent (i.e., crosslinker).
  • a crosslinking agent of this kind is composed advantageously of a diisocyanate or triisocyanate.
  • said at least one elastomer and said at least one crosslinking agent represent from 3% to 10% by weight, advantageously from 4% to 8% by weight, of the total weight of the compounds of the invention; and/or, advantageously, and said at least one plasticizer represents from 3% to 10% by weight, advantageously from 4% to 8% by weight, of the total weight of said compounds.
  • the compounds of the invention may comprise, in their composition, the following additional constituents:
  • ingredients (oxidizing charge+crosslinked, oxygen-containing hydrocarbon binder+optional ingredients selected from those identified above) of the composition of the compounds of the invention represent at least 95% by weight of said compounds, generally at least 98% by weight of said compounds.
  • the remainder, if there is a remainder, is generally made up of additives, such as manufacturing auxiliaries (aids).
  • the compounds of the invention which are obtained by the method specified hereinafter, may be of various types. They are monolithic compounds which may be solid or mono- or multi-perforated. Said compounds characteristically comprise in their composition an original oxygen-containing plasticizer as described above.
  • the performance of said compounds is particularly good.
  • Their composition has a high gas yield (approximately 36 mol/kg) with combustion temperatures in the region of 3000 K (these are indeed hot compositions).
  • Their combustion rate is rapid, approximately 45 mm/s at a pressure of 20 MPa.
  • their composition By virtue of their composition, they generate very little solid particulate matter ( ⁇ 2%).
  • their composition is liable to exhibit an oxygen balance value of between ⁇ 2% and ⁇ 3%, which means that they generate only very little toxic gas and that they are entirely suitable for application in the airbags field.
  • the inflation rates per unit area of the compositions of the compounds of the invention are very advantageous. They are approximately 830 mol.K/cm 2 .s.
  • the method of obtaining the compounds of the invention is advantageously a method by analogy, like that described in patent application EP 1 216 077. Very advantageously it is a method implemented continuously and solventlessly in a twin-screw mixer-extruder.
  • Said method more generally, comprises:
  • said at least one plasticizer is composed of or comprises an original plasticizer of the invention.
  • said mixing and said extruding are advantageously implemented in a twin-screw mixer-extruder.
  • the twin-screw mixer-extruder comprises a mixing and blending compartment, a compression compartment, and an extrusion head.
  • the solid and liquid constituents are introduced into the mixing and blending compartment via two different feed apertures, one feed aperture for the solids and one feed aperture for the liquids, and then are transported and blended, after which the homogeneous paste thus formed is degassed in the compression compartment and then extruded, by means of an extrusion head, into the form of strands, and, lastly, the strands thus formed are cut into charges by means of a chopping apparatus, after which these charges are crosslinked at a temperature, generally, of between 100° C. and 150° C.
  • the charges formed in this way find their preferred application as a pyrotechnic charge in gas generators intended for inflation of an airbag for occupants of an automotive vehicle. Indeed, the combustion rate of these charges, and also the level of solid residues produced and the level of carbon monoxide and of oxides of nitrogen that are produced, are particularly suitable (see above).
  • compositions of pyrotechnic compounds were evaluated by means of thermodynamic calculations and physical measurements.
  • composition with no binder, comprises:
  • composition is of the type according to patents U.S. Pat. Nos. 6,143,102 and 5,608,183.
  • Pellets were prepared from said composition.
  • composition with binder, comprises:
  • composition is a composition in accordance with patent application EP 1 216 077. It is extruded and crosslinked to generate compounds.
  • the oxygen balance of this composition is ⁇ 2.3%. Its theoretical density is 1.73 g/cm 3 .
  • the level of particulates is less than 2%.
  • the rate of combustion of the compounds (extrudates) is between 40 and 50 mm/s at 20 MPa (see table below).
  • the oxygen balance of this composition is ⁇ 2.4%. Its theoretical density is 1.72 g/cm 3 .
  • the level of particulates is less than 2%.
  • the rate of combustion of the compounds (extrudates) is between 40 and 50 mm/s at 20 MPa (see table below).
  • compositions A, B, 1 and 2 and those of the corresponding compounds are given in table 1 below.
  • the markedly higher combustion rate of the compounds of the invention gives rise to an inflation rate per unit area that is greater than that of the reference compounds.
  • the characteristic dimensions of the article to be burnt can be doubled in order to provide an equivalent operational duration.
  • the extruded block produced from the compositions of the invention can therefore be very compact and allow the development of small-sized generators containing a low pyrotechnic weight.
  • the gas generators employing the compounds of the invention can to a certain extent be devoid of particulate filters. By this means the thermal gas losses are reduced.
  • the compounds of the invention generally have the disadvantage of emitting hydrogen chloride. At the end of combustion, said hydrogen chloride undergoes condensation with the water formed by combustion, and may be trapped by the bag.
  • the level of hydrogen chloride emitted by the compounds of the invention is approximately 0.2 g/g.
  • the bag may be coated with chlorine scavengers.
  • the events may be reduced in order to increase the scavenging rate by condensation of acidified water within the bag. Following operation, the bag deflates naturally under the effect of the drop in temperature and the condensation of the condensables.
  • a gas generator for a driver's (side) airbag containing a compound according to the invention (14 g) emits 2.8 g of hydrogen chloride.
  • the level of hydrogen chloride is of the order of 700 ppm in a passenger compartment measuring 2.8 m 3 .

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Dispersion Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Molecular Biology (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Air Bags (AREA)
  • Feeding, Discharge, Calcimining, Fusing, And Gas-Generation Devices (AREA)
US12/598,323 2007-05-02 2008-04-30 Gas-generating pyrotechnic compound and production process Abandoned US20110041969A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR0754809 2007-05-02
FR0754809A FR2915746B1 (fr) 2007-05-02 2007-05-02 Compose pyrotechnique generateur de gaz; procede d'obtention
PCT/FR2008/050773 WO2008145935A2 (fr) 2007-05-02 2008-04-30 Compose pyrotechnique generateur de gaz; procede d'obtention

Publications (1)

Publication Number Publication Date
US20110041969A1 true US20110041969A1 (en) 2011-02-24

Family

ID=39126801

Family Applications (1)

Application Number Title Priority Date Filing Date
US12/598,323 Abandoned US20110041969A1 (en) 2007-05-02 2008-04-30 Gas-generating pyrotechnic compound and production process

Country Status (7)

Country Link
US (1) US20110041969A1 (de)
EP (1) EP2139828B1 (de)
JP (1) JP5483732B2 (de)
CN (1) CN101679139B (de)
AT (1) ATE527227T1 (de)
FR (1) FR2915746B1 (de)
WO (1) WO2008145935A2 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8657333B2 (en) 2011-07-27 2014-02-25 Autoliv Asp, Inc. Inflator device with fuel-rich monolithic grain and oxidant-enhanced combustion
US20140116584A1 (en) * 2011-05-09 2014-05-01 Herakles Pyrotechnic gas generator compounds

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2943599B1 (fr) 2009-03-27 2012-10-05 Snpe Materiaux Energetiques Generateur de gaz pour coussin gonflable de securite automobile
FR2950624B1 (fr) * 2009-09-25 2013-05-10 Snpe Materiaux Energetiques Compose pyrotechnique generateur de gaz
FR2959508B1 (fr) 2010-04-29 2015-01-02 Snpe Materiaux Energetiques Compose pyrotechnique generateur de gaz; procede d'obtention
US8980023B2 (en) 2011-07-27 2015-03-17 Autoliv Asp, Inc. Gas generation via elemental carbon-based compositions
FR3007659B1 (fr) 2013-06-28 2017-03-24 Herakles Procede de delivrance d'un liquide pressurise par les gaz de combustion d'au moins un chargement pyrotechnique
FR3022906B1 (fr) * 2014-06-30 2016-07-15 Herakles Blocs monolithiques pyrotechniques generateurs de gaz
FR3037812B1 (fr) 2015-06-29 2017-08-04 Herakles Extincteur d'incendie
FR3077989B1 (fr) 2018-02-20 2021-11-19 Arianegroup Sas Extincteur d'incendie
CN110722165B (zh) * 2019-11-26 2021-10-26 中北大学 一种室温固化硅橡胶基柔性线型复合药型罩及其制备方法

Citations (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2310889A (en) * 1941-01-24 1943-02-09 Buchsbaum And Company S Vinyl resin composition and articles of manufacture comprising same
US3024213A (en) * 1959-04-20 1962-03-06 Bemis Bro Bag Co Heat-dry printing ink vehicle
US3214304A (en) * 1963-03-20 1965-10-26 Thiokol Chemical Corp Gas-generating compositions containing coolants and methods for their use
US3732131A (en) * 1971-10-14 1973-05-08 Rockwell International Corp Gun propellant containing nitroplasticized nitrocellulose and triaminoguanidine nitrate
US3964256A (en) * 1972-10-17 1976-06-22 Societe Nationale Des Poudres Et Explosifs Production of non-toxic gas by combustion of solid propellant
US3986908A (en) * 1972-07-05 1976-10-19 Societe Nationale Des Poudres Et Explosifs Composite propellants with a cellulose acetate binder
US4009376A (en) * 1972-02-15 1977-02-22 Sangamo Weston, Inc. Method and apparatus for measuring material thickness
US5112895A (en) * 1990-01-23 1992-05-12 Monsanto Company Weatherable graft polymers having improved impact retention and improved melt flow
US5540794A (en) * 1992-05-11 1996-07-30 Thiokol Corporation Energetic binder and thermoplastic elastomer-based low vulnerability ammunition gun propellants with improved mechanical properties
US5608183A (en) * 1996-03-15 1997-03-04 Morton International, Inc. Gas generant compositions containing amine nitrates plus basic copper (II) nitrate and/or cobalt(III) triammine trinitrate
US5610444A (en) * 1994-12-22 1997-03-11 Societe Nationale Des Poudres Et Explosifs Process for continuous manufacture of pyrotechnic charges containing a silicone binder and compositions capable of being used by this process
US6143102A (en) * 1999-05-06 2000-11-07 Autoliv Asp, Inc. Burn rate-enhanced basic copper nitrate-containing gas generant compositions and methods
US20020079031A1 (en) * 2000-12-22 2002-06-27 Snpe Gas-generating pyrotechnic compositions with a hydrocarbonaceous binder and continuous manufacturing process
US6417290B1 (en) * 2001-01-29 2002-07-09 Department Of National Defence Synthesis of energetic polyester thermoplastic homopolymers and energetic thermoplastic elastomers formed therefrom
US20060071455A1 (en) * 2003-04-15 2006-04-06 Seva Technologies, a corporation of France Device for implementing a security element for the protection of goods and/or persons

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4099376A (en) * 1955-06-29 1978-07-11 The B.F. Goodrich Company Gas generator and solid propellant with a silicon-oxygen compound as a burning rate modifier, and method for making the same
EP0439443B1 (de) * 1990-01-23 1997-03-05 Bayer Antwerpen N.V. Witterungsbeständige Pfropfpolymere mit verbesserter Schlagfestigkeit und verbessertem Schmelzflussverhalten
FR2772370B1 (fr) * 1997-12-12 2000-01-07 Poudres & Explosifs Ste Nale Compositions pyrotechniques generatrices de gaz non toxiques a base de perchlorate d'ammonium
EP1152029A4 (de) * 1998-11-04 2002-11-20 Nippon Zeon Co Mehrfachmischungs-zusammensetzung, vernetzter gegenstand und benzinschlauch
JP4169427B2 (ja) * 1999-03-30 2008-10-22 株式会社Ａｄｅｋａ プラスチゾル組成物
CN1754861A (zh) * 2004-09-28 2006-04-05 Snpe巨能材料公司 用于机动车安全性且在燃烧温度低于2200k下燃烧的烟火产气组合物

Patent Citations (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2310889A (en) * 1941-01-24 1943-02-09 Buchsbaum And Company S Vinyl resin composition and articles of manufacture comprising same
US3024213A (en) * 1959-04-20 1962-03-06 Bemis Bro Bag Co Heat-dry printing ink vehicle
US3214304A (en) * 1963-03-20 1965-10-26 Thiokol Chemical Corp Gas-generating compositions containing coolants and methods for their use
US3732131A (en) * 1971-10-14 1973-05-08 Rockwell International Corp Gun propellant containing nitroplasticized nitrocellulose and triaminoguanidine nitrate
US4009376A (en) * 1972-02-15 1977-02-22 Sangamo Weston, Inc. Method and apparatus for measuring material thickness
US3986908A (en) * 1972-07-05 1976-10-19 Societe Nationale Des Poudres Et Explosifs Composite propellants with a cellulose acetate binder
US3964256A (en) * 1972-10-17 1976-06-22 Societe Nationale Des Poudres Et Explosifs Production of non-toxic gas by combustion of solid propellant
US5112895A (en) * 1990-01-23 1992-05-12 Monsanto Company Weatherable graft polymers having improved impact retention and improved melt flow
US5540794A (en) * 1992-05-11 1996-07-30 Thiokol Corporation Energetic binder and thermoplastic elastomer-based low vulnerability ammunition gun propellants with improved mechanical properties
US5610444A (en) * 1994-12-22 1997-03-11 Societe Nationale Des Poudres Et Explosifs Process for continuous manufacture of pyrotechnic charges containing a silicone binder and compositions capable of being used by this process
US5608183A (en) * 1996-03-15 1997-03-04 Morton International, Inc. Gas generant compositions containing amine nitrates plus basic copper (II) nitrate and/or cobalt(III) triammine trinitrate
US6143102A (en) * 1999-05-06 2000-11-07 Autoliv Asp, Inc. Burn rate-enhanced basic copper nitrate-containing gas generant compositions and methods
US20020079031A1 (en) * 2000-12-22 2002-06-27 Snpe Gas-generating pyrotechnic compositions with a hydrocarbonaceous binder and continuous manufacturing process
US6824626B2 (en) * 2000-12-22 2004-11-30 Snpe Gas-generating pyrotechnic compositions with a binder and continuous manufacturing process
US6417290B1 (en) * 2001-01-29 2002-07-09 Department Of National Defence Synthesis of energetic polyester thermoplastic homopolymers and energetic thermoplastic elastomers formed therefrom
US20060071455A1 (en) * 2003-04-15 2006-04-06 Seva Technologies, a corporation of France Device for implementing a security element for the protection of goods and/or persons

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20140116584A1 (en) * 2011-05-09 2014-05-01 Herakles Pyrotechnic gas generator compounds
US9249063B2 (en) * 2011-05-09 2016-02-02 Herakles Pyrotechnic gas generator compounds
US8657333B2 (en) 2011-07-27 2014-02-25 Autoliv Asp, Inc. Inflator device with fuel-rich monolithic grain and oxidant-enhanced combustion

Also Published As

Publication number Publication date
EP2139828A2 (de) 2010-01-06
JP2010526010A (ja) 2010-07-29
WO2008145935A3 (fr) 2009-09-17
JP5483732B2 (ja) 2014-05-07
WO2008145935A2 (fr) 2008-12-04
ATE527227T1 (de) 2011-10-15
FR2915746A1 (fr) 2008-11-07
EP2139828B1 (de) 2011-10-05
CN101679139B (zh) 2012-09-26
FR2915746B1 (fr) 2009-08-21
CN101679139A (zh) 2010-03-24

Similar Documents

Publication Publication Date Title
US20110041969A1 (en) Gas-generating pyrotechnic compound and production process
US6824626B2 (en) Gas-generating pyrotechnic compositions with a binder and continuous manufacturing process
JP2002508297A (ja) 過塩素酸アンモニウムをベースとする無毒なガスを発生する発火混合物
US5663524A (en) Gas generating mixture containing copper diammine dinitrate
US20020195181A1 (en) Solid smokeless propellants and pyrotechnic compositions for rocket and gas generation systems
US20130228254A1 (en) Pyrotechnic gas generator compounds
JP2793514B2 (ja) 熱可塑性エラストマーバインダーを含む火工組成物
EP0576326B1 (de) Pyrotechnische, ein nichttoxisches heisses Gas erzeugende Zusammensetzung und ihre Anwendung in einer Schutzeinrichtung für Insassen eines Kraftfahrzeuges
KR20020059426A (ko) 가스 발생 조성물
WO2005094366A2 (en) Gas generating system
US20060219340A1 (en) Gas generating system
US6893517B2 (en) Nitrocellulose-free gas-generating composition
JP4575395B2 (ja) 特に自動車の安全装置用の発火性ガス発生用組成物及び発火物
US6673172B2 (en) Gas generant compositions exhibiting low autoignition temperatures and methods of generating gases therefrom
KR100853877B1 (ko) 차량 승객의 자동 방호 시스템용 저함량 애쉬 함유 가스발생 및 점화용 조성물
CN100418935C (zh) 气体发生剂及相关组合物的粘合剂填料及方法
US20050067077A1 (en) Pyrotechnic gas-generating composition intended for motor vehicle safety and burning at combustion temperatures below 2200 degree K
US6136112A (en) Smokeless gas generating composition for an inflatable vehicle occupant protection device
JP2006096614A (ja) 火工ガス発生組成物
EP1448497A2 (de) Guanidindinitramid enthaltende gaserzeugende formulierungen und aufblasbare vorrichtungen, bei denen die formulierungen zum einsatz kommen
JP2006076832A (ja) 硝酸アンモニウムの燃焼促進剤並びにそれを用いた火薬組成物及びガス発生剤
KR20060030670A (ko) 2200°ｋ 미만의 연소온도에서 연소되는 자동차 안전용피로테크닉 기체 생성 조성물

Legal Events

Date Code Title Description
AS Assignment

Owner name: SME, FRANCE

Free format text: CHANGE OF NAME;ASSIGNOR:SNPE MATERIAUX ENERGETIQUES;REEL/FRAME:030210/0679

Effective date: 20110405

AS Assignment

Owner name: HERAKLES, FRANCE

Free format text: CHANGE OF NAME;ASSIGNOR:SME;REEL/FRAME:030217/0925

Effective date: 20120525

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION