Containing Inorganic Nitrogen-oxygen Salt Patents (Class 149/45)
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Publication number: 20120000583Abstract: The present invention relates to a gas generant composition that has a high ignitability and combustibility and is capable of quickly responding to an electrical signal for starting combustion, and particularly to a gas generant composition comprising a nitrogen-containing organic compound as a fuel component (A), a metal nitrate and/or a basic metal nitrate (B-1) and a perchlorate (B-2) having a 50 percent particle diameter from 1 to 50 ?m as an oxidant component (B), the content of the perchlorate (B-2) in the total mass of the oxidant component (B) is 5 mass percent or more and less than 35 mass percent.Type: ApplicationFiled: March 9, 2010Publication date: January 5, 2012Applicant: NIPPONKAYAKU KABUSHIKIKAISHAInventors: Toshihiro Ogata, Eishi Sato
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Patent number: 8088235Abstract: A novel compound, used for example, as a gas generating fuel, is defined as a compound having the structural formula of R3—R1—R2, wherein R1 is a benzene ring with nitro substitution, R2 is a tetrazolyl group with a C—C bond to the benzene ring, and R3 is a tetrazolyl group with a C—C bond to the benzene ring. Other fuels used in the gas generant compositions of the present invention include methylene bi(tetrazole); and 2,3-bis(tetrazolo) pyrazine. A method of making the compound is also provided. Gas generant compositions 12 containing these fuels are provided within a gas generator 10. The gas generator 10 may be contained within a gas generating system 200 such as an airbag inflator 10 or seat belt assembly 150, or more broadly within a vehicle occupant protection system 180.Type: GrantFiled: May 7, 2007Date of Patent: January 3, 2012Assignee: TK Holdings, Inc.Inventors: Sudhakar R. Ganta, Graylon K. Williams, Cory G. Miller
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Patent number: 8048243Abstract: The present invention pertains to combustion catalysts, including processes for achieving increased thermal output from combustion processes, processes for improved combustion in boilers and furnaces, processes for reducing the emission of undesirable pollutants, and processes for increasing the combustion of carbon.Type: GrantFiled: December 4, 2008Date of Patent: November 1, 2011Inventor: Evan Lipstein
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Patent number: 8038812Abstract: A method for manufacture and delivery of an emulsion explosive having a discontinuous oxidizer solution phase, a continuous fuel phase, and an emulsifier, the method comprising: (a) providing an emulsion manufacturing system; (b) conveying an oxidizer solution phase to the emulsion manufacturing system at a pre-determined pressure; (c) conveying a fuel phase to the emulsion manufacturing system at a pre-determined pressure; (d) forming an emulsion from the oxidizer solution and the fuel phases using only a portion of the pre-determined pressures so as to provide a usable residual pressure after the formation of the emulsion; and (e) utilizing the residual pressure to non-mechanically deliver the emulsion to a pre-determined location.Type: GrantFiled: August 4, 2010Date of Patent: October 18, 2011Assignee: Dyno Nobel, Inc.Inventors: John B Halander, Casey L. Nelson, Clark D. Bonner
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Patent number: 8034133Abstract: There is provided a gas generating composition having a low combustion temperature and a high burning rate. The gas generating composition comprises fuel and an oxidizing agent, and as necessary a binder and additives, the gas generating composition comprising at least one selected from the group consisting of glycine and a derivative thereof as the fuel. A combination of glycine as the fuel, basic copper nitrate as the oxidizing agent, and carboxymethyl cellulose or a salt thereof as the binder is preferable.Type: GrantFiled: May 26, 2005Date of Patent: October 11, 2011Assignee: Daicel Chemical Industries, Ltd.Inventor: Shogo Tomiyama
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Patent number: 8002915Abstract: A novel compound, used for example, as a gas generating fuel, is defined as a compound having the structural formula of wherein: R4 is a triazine ring; R1 is selected from the group consisting of a tetrazolyl group, CH3, OCH3, —CN, —C2H, NCO, —NHNH2, NO, NO2, OH, Cl, —NHCONH2, —OCOR, NHNO2, substituted tetrazoles, and substituted triazoles; R2 is selected from the group consisting of a tetrazolyl group, CH3, OCH3, —CN, —C2H, NCO, —NHNH2, NO, NO2, OH, Cl, —NHCONH2, —OCOR, NHNO2, substituted tetrazoles, and substituted triazoles; R3 is selected from the group consisting of a tetrazolyl group, CH3, OCH3, —CN, —C2H, NCO, —NHNH2, NO, NO2, OH, Cl, —NHCONH2, —OCOR, NHNO2, substituted tetrazoles, and substituted triazoles.Type: GrantFiled: October 1, 2007Date of Patent: August 23, 2011Assignee: TK Holdings, Inc.Inventors: Sudhakar R. Ganta, Cory G. Miller, Graylon K. Williams
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Patent number: 8002914Abstract: A flash powder formulation for use in flash grenades that produces reduced smoke containing from about 10 percent by weight to about 60 percent by weight of zirconium hydride, from about 40 percent by weight to about 90 percent by weight CAN, and from zero percent by weight to about 5 percent by weight of a binder material.Type: GrantFiled: March 24, 2009Date of Patent: August 23, 2011Assignee: United States of America as represented by the Secretary of the NavyInventors: Steven P. D'Arche, Travis Swanson
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Patent number: 7998292Abstract: The inclusion of between about 15 to about 60 formulation weight percent of a reaction product of basic copper nitrate and at least one transition metal complex of 5-aminotetrazole, wherein the at least one transition metal complex of 5-aminotetrazole and the basic copper nitrate are included in a weight ratio of no more than 1 part of the at least one transition metal complex of 5-aminotetrazole per 1 part of basic copper nitrate in azide fuel-free gas generant formulations exhibiting increased burn rates, as compared to the same formulation without the inclusion of that reaction product.Type: GrantFiled: October 22, 2004Date of Patent: August 16, 2011Assignee: Autoliv ASP, Inc.Inventors: Robert D. Taylor, Ivan V. Mendenhall
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Patent number: 7988801Abstract: Perchlorate-free green flare compositions are disclosed which, when burned, produce green smoke and flames. Methods of producing the compositions are also disclosed.Type: GrantFiled: December 12, 2008Date of Patent: August 2, 2011Assignee: The United States of America as represented by the Secretary of the NavyInventors: Robert G. Shortridge, Christina M. Yamamoto
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Patent number: 7985310Abstract: This invention relates to granules comprising a homogenous mixture of metal flakes and/or metal powder and metal oxide powder, and a binder. The invention also relates to a process for producing such granules. The process includes the step of forming a mixture of metal flakes and/or metal powder and metal oxide powder, forming the mixture into a homogenous blend, adding the blend, together with a binder, to a granulator to form granules, and drying the granules. Granules so formed containing aluminum, aluminum oxide and iron oxide find particular use as sensitizers and energizers in explosives compositions.Type: GrantFiled: May 12, 2010Date of Patent: July 26, 2011Inventor: Denis Gordon Verity
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Patent number: 7976653Abstract: Ammonium dinitramide based liquid monopropellants exhibiting stabilised combustion characteristics and improved storage life, containing ammonia, a base weaker than ammonia, or a base which is sterically hindered, added in an amount of 0.1 to 5% of the total weight of the other components of the propellant.Type: GrantFiled: May 23, 2002Date of Patent: July 12, 2011Assignee: Svenska RymdaktiebolagetInventors: Kjell Anflo, Niklas Wingborg
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Patent number: 7942989Abstract: An initiator explosive for detonating a second explosive that includes nanocrystalline silicon containing a plurality of pores and a solid state oxidant disposed within said pores.Type: GrantFiled: December 9, 2003Date of Patent: May 17, 2011Assignee: The Regents of the University of CaliforniaInventors: Michael J. Sailor, Frederic V. Mikulec, Joseph D. Kirtland
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Patent number: 7938920Abstract: An explosive composition is provided that is comprised of a Heavy ANFO and grain hulls. In one embodiment, the grain hulls are comprised of rice hulls. The grain hulls serve both as an inert bulking additive that reduces the density of the composition and as a sensitizer that reduces the energy needed to reliably detonate the composition. Also provided is a method for manufacturing an explosive composition comprised of Heavy ANFO and grain hulls, such as rice hulls. Additionally, a method of using an explosive comprised of ANFO and grain hulls in a mining operation is disclosed.Type: GrantFiled: October 17, 2005Date of Patent: May 10, 2011Inventors: Kevin H. Waldock, Christopher J. Kulish
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Patent number: 7918949Abstract: Disclosed is a heat-treated oxidizing agent for gas generating compositions which is obtained by mixing ammonium nitrate with an inorganic compound having as an element one or two or more metal atoms selected from the group consisting of Cu, Fe, Ni, Zn, Co, Mn and Ti and subjecting the mixture to heat treatment, and a gas generating composition containing the same. This invention provides a gas generating composition comprising ammonium nitrate, which can be safely produced, does not change in density with phase transition, and has sufficient combustibility.Type: GrantFiled: March 29, 2007Date of Patent: April 5, 2011Assignee: Nippon Kayaku Kabushiki KaishaInventors: Dairi Kubo, Eishi Sato, Kenjiro Ikeda
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Patent number: 7914631Abstract: An azide-free gas-generating composition for use in gas generators for safety arrangements, in particular in gas generators for vehicle occupant restraint systems, includes a fuel and an oxidizer. The fuel is a compound having a melting point of at least 120 degrees C., and is selected from the group of nitrogenous organic compounds and of aliphatic dicarboxylic acids, and mixtures, derivatives and salts thereof. The oxidizer comprises tetrakis(2,2,2-trinitroethyl)orthocarbonate (TNEOC), with the TNEOC being present in a proportion of at least 10% by weight of the composition.Type: GrantFiled: June 13, 2005Date of Patent: March 29, 2011Assignee: TRW Automotive Airbag Systems GmbHInventors: Siegfried Zeuner, Uwe Reimann, Roland Schropp, Karl-Heinz Roedig
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Patent number: 7914632Abstract: A novel compound, used for example, as a gas generating fuel, is methoxy carbonyl-5 amino tetrazole. A method of making the compound is also provided. A gas generating composition, containing the novel compound as a fuel, and an oxidizer is also provided. The novel compound may be contained within a gas generant composition 12, within a gas generator 10. The gas generator 10 may be contained within a gas generating system 200 such as an airbag inflator 10 or seat belt assembly 150, or more broadly within a vehicle occupant protection system 180.Type: GrantFiled: May 7, 2007Date of Patent: March 29, 2011Assignee: TK Holdings, Inc.Inventors: Sudhakar R. Ganta, Graylon K. Williams, Cory G. Miller
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Patent number: 7914633Abstract: Sulfur-free and carbon-free, white propellant compositions for use as a blackpowder substitute in firearms, munitions, and pyrotechnics to form combustion byproducts that are water soluble and are free of corrosive sulfur compounds and black carbon residues. Formulations include a fuel agent selected from the group consisting of sodium benzoate, lactose, sodium salicylate, sodium m-nitrobenzoate, and mixtures thereof. The fuel agent is combined with dextrin, potassium nitrate, potassium perchlorate, and tricalcium phosphate. Dicyanodiamide may be incorporated in the formulation as a burn rate modifier.Type: GrantFiled: October 10, 2007Date of Patent: March 29, 2011Assignee: Hodgdon Powder Company, Inc.Inventors: G Dean Barrett, Terry M Dielh, Thomas W Bowen
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Patent number: 7887650Abstract: The present invention provides a gas generating composition comprising a fuel and an oxidizing agent and further a copper powder.Type: GrantFiled: March 1, 2007Date of Patent: February 15, 2011Assignee: Daicel Chemical Industries, Ltd.Inventors: Kenji Kitayama, Shogo Tomiyama
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Patent number: 7879167Abstract: A gas generating composition containing a tetrazole amide as a fuel, 5-formamido-1H-tetrazole for example, and an oxidizer is provided. The gas generant is contained within a gas generator. The gas generator may be contained within a gas generating system such as an airbag inflator or seat belt assembly, or more broadly within a vehicle occupant protection system.Type: GrantFiled: February 25, 2008Date of Patent: February 1, 2011Assignee: TK Holdings, Inc.Inventors: Sudhakar R. Ganta, Graylon K. Williams
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Publication number: 20100326574Abstract: Provided is a basic metal nitrate suitable as an oxidizing agent for a gas generating agent, which is a basic metal nitrate having a good thermal stability and meeting at least one requirement of the following (a) to (d): (a) a particle diameter of 0.5 to 40 ?m; (b) a degree of crystallinity having 0.4 deg or less of a half band width of the peak in the X-ray analysis; (c) an initiation temperature of weight loss being 220° C. or higher according to TG-DTA analysis; and (d) an impurity content of 1,000 ppm or less based on Na atom. Further provided is a gas generating composition which has a low toxicity, a high burning rate and a low combustion temperature and which is used in a gas generator for an air bag. The gas generating composition comprises (a) tetrazole derivatives, guanidine derivatives or a mixture thereof, (b) a basic metal nitrate and (c) a binder and/or a slag-forming agent.Type: ApplicationFiled: September 8, 2010Publication date: December 30, 2010Inventors: Xingxi Zhou, Kazuyuki Matsuoka, Jianzhou Wu, Yo Yamato, Takeshi Takahori, Kaoru Yamazaki
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Patent number: 7833365Abstract: The present invention provides a gas generating composition comprising a light rare earth compound.Type: GrantFiled: January 26, 2007Date of Patent: November 16, 2010Assignee: Daicel Chemical Industries, Ltd.Inventors: Kenji Kitayama, Shogo Tomiyama
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Publication number: 20100258221Abstract: A novel compound, used for example, as a gas generating fuel, is defined as a compound having the structural formula of R3—R1—R2, wherein R1 is a benzene ring with nitro substitution, R2 is a tetrazolyl group with a C—C bond to the benzene ring, and R3 is a tetrazolyl group with a C—C bond to the benzene ring. Other fuels used in the gas generant compositions of the present invention include methylene bi(tetrazole); and 2,3-bis(tetrazolo) pyrazine. A method of making the compound is also provided. Gas generant compositions 12 containing these fuels are provided within a gas generator 10. The gas generator 10 may be contained within a gas generating system 200 such as an airbag inflator 10 or seat belt assembly 150, or more broadly within a vehicle occupant protection system 180.Type: ApplicationFiled: May 7, 2007Publication date: October 14, 2010Inventors: Sudhakar R. Ganta, Graylon K. Williams, Cory G. Miller
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Publication number: 20100258220Abstract: A novel compound, used for example, as a gas generating fuel, is methoxy carbonyl-5 amino tetrazole. A method of making the compound is also provided. A gas generating composition, containing the novel compound as a fuel, and an oxidizer is also provided. The novel compound may be contained within a gas generant composition 12, within a gas generator 10. The gas generator 10 may be contained within a gas generating system 200 such as an airbag inflator 10 or seat belt assembly 150, or more broadly within a vehicle occupant protection system 180.Type: ApplicationFiled: May 7, 2007Publication date: October 14, 2010Inventors: Sudhakar R. Ganta, Grayion K. Williams, Cory G. Miller
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Patent number: 7811397Abstract: A highly heat-resistant gas generating agent is provided. The gas generating agent is for a gas generator for an airbag system that is installed at least outside a vehicle cabin and that protects an individual subjected to impact by the vehicle, and has a mass loss rate of not more than 1% after holding for 400 hours at 130° C. in a sealed system. The gas generating agent preferably comprises fuel and oxidizing agent and the melting point of the fuel is preferably at least 250° C.Type: GrantFiled: August 30, 2005Date of Patent: October 12, 2010Assignee: Daicel Chemical Industries, Ltd.Inventors: Shogo Tomiyama, Jianzhou Wu
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Patent number: 7789980Abstract: The present invention relates to a process for the preparation of novel ammonium dinitroamide (ADN) crystals and to said novel ADN crystals. Said novel crystals have an original morphology factor, namely a low shape factor. They are obtained in the presence of at least one crystal habit modifier.Type: GrantFiled: April 11, 2006Date of Patent: September 7, 2010Assignee: SNPE Materiaux EnergetiquesInventors: Stéphane Benazet, Guy Jacob
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Patent number: 7771550Abstract: A method for manufacture and delivery of an emulsion explosive having a discontinuous oxidizer solution phase, a continuous fuel phase, and an emulsifier, the method comprising: (a) providing an emulsion manufacturing system; (b) conveying an oxidizer solution phase to the emulsion manufacturing system at a pre-determined pressure; (c) conveying a fuel phase to the emulsion manufacturing system at a pre-determined pressure; (d) forming an emulsion from the oxidizer solution and the fuel phases using only a portion of the pre-determined pressures so as to provide a usable residual pressure after the formation of the emulsion; and (e) utilizing the residual pressure to non-mechanically deliver the emulsion to a pre-determined location.Type: GrantFiled: October 7, 2005Date of Patent: August 10, 2010Assignee: Dyno Nobel, Inc.Inventors: John B. Halander, Casey L. Nelson, Clark D. Bonner
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Patent number: 7767045Abstract: A blasting agent comprised of an ammonium nitrate component and an organic carbonaceous fuel component. The ammonium nitrate component includes ammonium nitrate crystals having a particle size of from about 1 to about 500 microns and further includes one or more crystal habit modifiers.Type: GrantFiled: December 20, 2005Date of Patent: August 3, 2010Assignee: Nexco Inc.Inventor: Christopher Preston
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Patent number: 7758709Abstract: A gas generant for an inflatable restraint device (for example, an airbag system for a vehicle) is a monolithic compressed solid that has a linear burn rate of greater than or equal to about 1.6 inches per second at a pressure of about 3,000 pounds per square inch. The gas generant can be in the form of an annular disk having a plurality of apertures. The gas generant may be substantially free of binder and may have a low initial surface area which progressively increases during burning. The gas generant provides a gas generation profile that improves restraint of vehicle occupants, including those occupants that are out-of-position. Additionally, the shaped gas generant decreases occupant exposure to toxic effluent combustion products and solid respirable particulates.Type: GrantFiled: June 21, 2006Date of Patent: July 20, 2010Assignee: Autoliv ASP, Inc.Inventors: Brett Hussey, Ivan Mendenhall, Roger Bradford
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Patent number: 7749344Abstract: Disclosed is a group of tertiary amine azides useful as hypergolic fuels for hypergolic bipropellant mixtures. The fuels provide higher density impulses than monomethyl hydrazine (MMH) but are less toxic and have lower vapor pressures that MMH. In addition, the fuels have shorter ignition delay times than dimethylaminoethylazide (DMAZ) and other potential reduced toxicity replacements for MMH.Type: GrantFiled: February 27, 2007Date of Patent: July 6, 2010Assignee: CFO Research CorporationInventor: Debasis Sengupta
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Publication number: 20100116385Abstract: A sensitized explosive that comprises an explosive precipitated onto a sensitizer. The explosive is CL-20, PETN, RDX, HMX, or mixtures thereof and the sensitizer is aluminum, titanium, zirconium, magnesium, melamine, styrene, lithium aluminum hydride, or mixtures thereof. The sensitized explosive is used in a percussion primer that includes a bismuth compound and a melt binder. The bismuth compound is bismuth oxide, bismuth subnitrate, bismuth tetroxide, bismuth sulfide, or mixtures thereof and the melt binder is a wax having a melting point above ambient temperature, trinitrotoluene, poly(3,3-bis(azidomethyl)oxetane), poly(3-azidomethyl-3-methyloxetane), ethyl-3,5-dinitrobenzoate, or mixtures thereof. A gun cartridge and other primer-containing ordnance assemblies employing the percussion primer are also disclosed. Methods of forming the sensitized explosive and the percussion primer are also disclosed.Type: ApplicationFiled: September 14, 2009Publication date: May 13, 2010Applicant: ALLIANT TECHSYSTEMS INC.Inventors: Harold E. Johnston, Kirstin F. Warner, Reed J. Blau, Scott K. Lusk
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Publication number: 20100084060Abstract: Gas-generating compositions and methods for their use are provided. Metal complexes are used as gas-generating compositions. These complexes are comprised of a metal cation template, a neutral ligand containing hydrogen and nitrogen, and sufficient oxidizing anion to balance the charge of the complex. The complexes are formulated such that when the complex combusts, nitrogen gas and water vapor is produced. Specific examples of such complexes include metal nitrite amine, metal nitrate amine, and metal perchlorate amine complexes, as well as hydrazine complexes. A binder and co-oxidizer can be combined with the metal complexes to improve crush strength of the gas-generating compositions and to permit efficient combustion of the binder. Such gas-generating compositions are adaptable for use in gas-generating devices, such as automobile air bags.Type: ApplicationFiled: December 4, 2009Publication date: April 8, 2010Applicant: ALLIANT TECHSYSTEMS INC.Inventors: Jerald C. Hinshaw, Daniel W. Doll, Reed J. Blau, Gary K. Lund
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Publication number: 20100078098Abstract: To provide a gas generating composition for air bag which is low in toxicity, large in burning rate, and low in combustion temperature. Gas generating compositions comprising (a) melamine cyanurate or a mixture of melamine cyanurate and nitrogen-containing organic compound and (b) oxygen-containing oxidant, and gas generating compositions comprising (c) binder and (d) additive are provided.Type: ApplicationFiled: April 22, 2009Publication date: April 1, 2010Applicant: DAICEL CHEMICAL INDUSTRIES, LTD.Inventors: Jianzhou WU, Shogo Tomiyama
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Patent number: 7662248Abstract: The present invention provides a process for producing a gas generating agent capable of constantly producing a gas generating agent with a high quality. The process for producing a gas generating agent comprises the first step of feeding nitroguanidine, a basic copper nitrate and guar gum and stirring and mixing them in the presence of moisture, the second step of extrusion-molding and cutting the mixture, and the third step of drying it.Type: GrantFiled: March 27, 2001Date of Patent: February 16, 2010Assignee: Daicel Chemical Industries, Ltd.Inventors: Akio Yamamoto, Takeshi Takahori
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Publication number: 20100032063Abstract: The present invention is directed to a lead-free, nontoxic pyrotechnic composition, comprising: 30-80 wt % of bismuth subnitrate; and 10-50 wt % of a fuel, wherein all weight percents are based on the total weight of the composition. The present invention is also directed to a lead-free, nontoxic priming composition, comprising: 20-80 wt % of the above nontoxic pyrotechnic composition; 20-50 wt % of an initiator explosive; and 2-10 wt % of a sensitizer, wherein all weight percents are based on the total weight of the composition.Type: ApplicationFiled: February 10, 2005Publication date: February 11, 2010Inventors: George C. Mei, James W. Pickett
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Publication number: 20090320977Abstract: Perchlorate-free flare compositions are disclosed which, when burned, produce red smoke and flames. Methods of producing the compositions are also disclosed.Type: ApplicationFiled: December 12, 2008Publication date: December 31, 2009Inventors: ROBERT G. SHORTRIDGE, CHRISTINA M. YAMAMOTO
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Publication number: 20090308509Abstract: The subject-matter of the present invention is: pyrotechnic compositions generating gases, whereof at least 95% by mass of the charges are constituted by constitutive ingredients hereinbelow: a reducing charge in the form of at least one organic nitrogen compound; an oxidizing charge in the form of at least one basic metal nitrate; and less than 30% by mass of a second oxidizing charge in the form of at least one alkaline metal perchlorate; and which are obtained via a dry roller compacting step of a pulverulent mixture essentially constituted by said powder ingredients; and also the method for obtaining such compositions. The compositions of the invention have interesting combustion speeds.Type: ApplicationFiled: October 12, 2006Publication date: December 17, 2009Applicant: SNPE MATERIAUX ENERGETIQUESInventor: Frédéric Marlin
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Patent number: 7618506Abstract: A gas generating composition which can prevent formation of mist is provided. A gas generating composition comprising (a) a glass powder, (b) aluminum hydroxide and/or magnesium hydroxide, (c) an organic compound as fuel, and (d) an oxygen-containing oxidizing agent. By the action of the component (a), combustion residues can be solidified to form a slag, thus preventing formation of mist.Type: GrantFiled: October 30, 2003Date of Patent: November 17, 2009Assignee: Daicel Chemical Industries, Ltd.Inventors: Takushi Yokoyama, Mamoru Watabiki, Jianzhou Wu
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Publication number: 20090260730Abstract: Disclosed is a gas generant composition for a gas actuator used for activating a safety device, which contains (A) a nitrogen-containing organic compound, (B) a metal nitrate and/or a perchlorate, (C) a water-soluble polymer binder, and (D) a magnetic material. When compared with the conventional gas generant compositions, this gas generant composition is excellent in combustibility under low pressure conditions and reduced in CO gas generation during combustion. In this gas generant composition, (D) the magnetic material is preferably composed of a magnetic iron oxide.Type: ApplicationFiled: April 27, 2007Publication date: October 22, 2009Applicants: Nippon Kayaku Kabushiki Kaisha, Toda Kogyo Corp.Inventors: Ryoi Kodama, Nanao Horiishi
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Publication number: 20090255611Abstract: Compositions and methods relating to gas generants used in inflatable restraint systems. The gas generant grains formed via spray drying techniques of the present disclosure provide superior performance, including high burn rates and high gas yields. Further, processing of the gas generant grain products can be streamlined. Such gas generants include by way of non-limiting example, guanidine nitrate, basic copper nitrate, and a secondary oxidizer, such as potassium perchlorate.Type: ApplicationFiled: November 12, 2008Publication date: October 15, 2009Applicant: Autoliv ASP, Inc.Inventors: Gary K. Lund, Roger Bradford
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Publication number: 20090223611Abstract: Propellant compositions are provided herein for use in small arms cartridges. Such propellant compositions include from about 70 to about 90% by weight of a cellulose-based organic fuel, from about 5 to about 30% by weight of a non-azide, nitrogen-containing primary organic oxidizer and from about 0.5 to about 10.0% by weight of a secondary nitrate, perchlorate, chlorate of peroxide oxidizer. Preferably, such compositions are in the form of extruded shaped hollow cylindrical grains having a length in the range of 0.030 to 0.200 inch, a diameter in the range 0.040 to 0.070 inch, and having a coaxial opening there through having a wall grain thickness in the range 0.008 to 0.016 inch. Ignition grains are also provided for use alone or in a mixture with the propellant compositions. When used in a small caliber firearm or muzzleloader, the temperature of combustion is at a level that ensures substantially complete combustion of the fuel during firing so that the products of combustion are mostly gaseous.Type: ApplicationFiled: February 9, 2007Publication date: September 10, 2009Applicant: General Dynamics Ordnance and Tactical Systems- Canada Valleyfield Inc.Inventors: Mathieu Racette, Stephane Viau, Daniel Lepage
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Patent number: 7578895Abstract: A perchlorate-free solid pyrotechnic flash bang composition is disclosed, which comprises an oxidizer component selected from the group comprising potassium nitrate, strontium nitrate, and basic copper nitrate and combinations thereof, a metallic fuel component selected from the group comprising aluminum, magnesium, magnesium-aluminum alloys, silicon, zirconium, and combinations thereof, and a non-metallic fuel component comprising sulfur. The flash bang pyrotechnic composition may also further comprise a ballistic accelerant component, a pH stabilizer, and a free flow/anti-caking component.Type: GrantFiled: March 24, 2005Date of Patent: August 25, 2009Assignee: The United States of America as represented by the Secretary of the ArmyInventors: Gary Chen, Mark Motyka, Jay C. Poret
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Publication number: 20090205757Abstract: The present invention relates to a dry process for the manufacture of pyrotechnic objects from at least one reducing charge selected from guanidine derivatives, metal hydrides, alkali metal hydrides and alkaline earth metal hydrides, and at least one oxidizing charge selected from alkali metal nitrates, alkaline earth metal nitrates and basic metal nitrates, at least one of said reducing and oxidizing charges having the property of flowing under stress. Said process makes it possible to obtain pellets and small tablets directly by compaction/compression, to obtain granules, usable as such, by compaction and then granulation, and to obtain compressed objects by compaction, granulation and then compression. The high-performance pyrotechnic objects obtained constitute a further subject of the invention.Type: ApplicationFiled: June 15, 2006Publication date: August 20, 2009Applicant: SNPE MATERIAUX ENERGETIQUESInventors: Marie Gaudre, Eric Giraud, Dimitri Charrette
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Publication number: 20090199937Abstract: A gas generating composition 12 containing a polyvinylazole is contained within an exemplary gas generator 10. A gas generating system 200 incorporates the polyvinylazole therein. A vehicle occupant protection system 180 incorporates the gas generating system 200.Type: ApplicationFiled: November 1, 2005Publication date: August 13, 2009Inventors: Cory G. Miller, Graylon K. Williams
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Explosive Composition and Explosive Composition Shaped Body as Well as Method for Producing the Same
Publication number: 20090159163Abstract: The invention provides an explosive composition obtained by milling a fuel component and an oxidizer component with an aqueous emulsion of a hydrophobic tackifier and drying them, which is high in the water resistance and good in the extrusion moldability and cleanability of a shaping machine and less in the production problem. Also, the explosive composition according to the invention is preferable to be applied as a shaped body to a gas generating agent, an autoignition agent, an enhancer agent or the like. Further, the explosive composition shaped body according to the invention is particularly preferable to be used for a gas generator actuating an automobile safety device.Type: ApplicationFiled: April 17, 2007Publication date: June 25, 2009Applicant: NIPPONKAYAKU KABUSHIKIKAISHAInventors: Kouichi Sasamoto, Yasuhiro Tanaka -
Publication number: 20090090441Abstract: The present invention relates to a process for the preparation of novel ammonium dinitroamide (ADN) crystals and to said novel ADN crystals. Said novel crystals have an original morphology factor, namely a low shape factor. They are obtained in the presence of at least one crystal habit modifier.Type: ApplicationFiled: April 11, 2006Publication date: April 9, 2009Applicant: SNPE MATERIAUX ENERGETIQUESInventors: Stephane Benazet, Guy Jacob
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Publication number: 20090084283Abstract: A propellant charge, a priming cap including the propellant charge and a weapons training system including the priming cap are characterized in that the propellant charge contains a soft friction agent. The propellant charge can contain at least one impact-sensitive explosive substance as a heavy-metal-free priming compound, and the soft friction agent can be marble, calcite, dolomite, soft carbonates and/or mixtures thereof.Type: ApplicationFiled: July 18, 2008Publication date: April 2, 2009Inventors: Peter Simon Lechner, Rainer Hagel, Reinhard Moller
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Publication number: 20090008003Abstract: The present invention includes a gas generator 10 that incorporates a gas generating composition 12 and a scavenging additive 16 in heterogeneous but vapor/gaseous communication with the gas generating composition 12. The scavenging additive retains moisture/contaminants typically evolving over time at relatively higher temperatures. The present invention further includes a gas generating system 180 incorporating the gas generator 10.Type: ApplicationFiled: July 2, 2008Publication date: January 8, 2009Inventors: Sean P. Burns, Jeffrey W. Halpin, Graylon K. Williams, Paresh S. Khandhadia, Deborah L. Hordos, Jason Newell
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Publication number: 20090008002Abstract: A novel compound, used for example, as a gas generating fuel, is defined as a compound having the structural formula of wherein: R4 is a triazine ring; R1 is selected from the group consisting of a tetrazolyl group, CH3, OCH3, —CN, —C2H, NCO, —NHNH2, NO, NO2, OH, Cl, —NHCONH2, —OCOR, NHNO2, substituted tetrazoles, and substituted triazoles; R2 is selected from the group consisting of a tetrazolyl group, CH3, OCH3, —CN, —C2H, NCO, —NHNH2, NO, NO2, OH, Cl, —NHCONH2, —OCOR, NHNO2, substituted tetrazoles, and substituted triazoles; R3 is selected from the group consisting of a tetrazolyl group, CH3, OCH3, —CN, —C2H, NCO, —NHNH2, NO, NO2, OH, Cl, —NHCONH2, —OCOR, NHNO2, substituted tetrazoles, and substituted triazoles.Type: ApplicationFiled: October 1, 2007Publication date: January 8, 2009Inventors: Sudhakar R. Ganta, Cory G. Miller, Graylon K. Williams
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Publication number: 20090008001Abstract: Extrudable gas generant compositions which, upon combustion, produce or result in an improved effluent and related methods for generating inflation gas for use in an inflatable restraint system are provided. Such extrudable gas generant compositions include a non-azide, organic, nitrogen-containing fuel, at least one copper-containing compound, a perchlorate additive and a polymeric binder material. The at least one copper-containing compound may be selected from basic copper nitrate, cupric oxide, a copper diammine-ammonium-nitrate mixture wherein the ammonium nitrate is present in the mixture in a range of about 3 to about 90 weight percent, and/or a copper-nitrate complex resulting from reaction of 5-aminotetrazole with basic copper nitrate.Type: ApplicationFiled: September 15, 2008Publication date: January 8, 2009Inventors: Ivan V. Mendenhall, Robert D. Taylor
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Patent number: 7470337Abstract: A compound including at least one copper II complex of a material selected from the group of imidazole and imidazole derivatives is provided for use in a gas generant composition. An associated burn rate enhanced gas generant composition, in addition to such copper complex-containing compound, also includes a nitrogen-containing non-azide fuel. Additionally provided are methods for improving the combustion performance of a non-azide gas generant composition in at least one aspect selected from the group consisting of ignitability, burn rate and burn rate pressure sensitivity, through the addition of such copper complex-containing compound to the non-azide gas generant composition.Type: GrantFiled: March 21, 2006Date of Patent: December 30, 2008Assignee: Autoliv ASP, Inc.Inventors: Ivan V. Mendenhall, Robert D. Taylor