Nitrated Aromatic Compound Patents (Class 149/105)
  • Patent number: 10118871
    Abstract: The invention relates to ignition sets comprising initial explosive substances selected from the group consisting of compounds, in particular compounds of lead, which are derived from trinitropolyphenols, such as trinitrophenol, trinitroresorcinol or hydrazoic acid, for example, in mixture with oxygen-generating substances, wherein further included are initial explosive substances made of alkali metal and/or alkaline-earth metal salts of dinitrobenzofuroxanes and oxygen-generating substances made from nitrates of ammonium, guanidine, aminoguanidine, triaminoguanidine, dicyanodiamidine and from the elements of sodium, potassium, magnesium, calcium, cerium and/or from multivalent metal oxides.
    Type: Grant
    Filed: November 5, 2009
    Date of Patent: November 6, 2018
    Assignee: RUAG AMMOTEC GMBH
    Inventors: Ulrich Bley, Peter Simon Lechner
  • Patent number: 9944570
    Abstract: A desensitizing agent and method which desensitizes triacetone triperoxide (TATP). The agent includes a common polymer dissolved in a volatile solvent, which allows for direct, rapid application on-site, providing for safer movement and transport of the explosive. Drop heights in impact test results of treated TATP were twice that of neat TATP or TATP treated with conventional agents. The agent is composed of non-toxic, inexpensive components with the polymer delivered in a solvent vehicle, which quickly volatilizes after application and exhibits compatibility with TATP and conventional explosives.
    Type: Grant
    Filed: February 20, 2014
    Date of Patent: April 17, 2018
    Assignee: The United States of America as Represented by the Secretary of the Navy
    Inventors: Kenneth Basom, Bryan Milani
  • Patent number: 9717842
    Abstract: Systems and methods for the washing and processing of biological fluid/biological cells are disclosed. The systems and methods utilize a disposable fluid circuit including a spinning membrane separation device to wash the biological cells.
    Type: Grant
    Filed: September 12, 2012
    Date of Patent: August 1, 2017
    Assignee: Fenwal, Inc.
    Inventors: Kyungyoon Min, Christopher Wegener
  • Patent number: 9512127
    Abstract: A spherical morphology of the high explosive tetranitroglycoluril (TNGU) has been discovered. This new morphology exhibits approximately a twofold improvement in the response of the material to impact, more than a one and a half fold improvement in friction and the same high resistance to electrostatic discharge over non-spherical TNGU produced by other methods.
    Type: Grant
    Filed: September 29, 2014
    Date of Patent: December 6, 2016
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventors: William Matthew Sherrill, Joseph Erik Banning
  • Publication number: 20140305555
    Abstract: A primer for small arms ammunition including a primary explosive and an oxidizer system containing bismuth oxide is provided. A method of forming the primer and a small arms ammunition cartridge also is provided. The oxidizer system can be non-hygroscopic and non-toxic. The primer can include reducing agents or fuels, sensitizers, binders and gas producing agents.
    Type: Application
    Filed: June 26, 2014
    Publication date: October 16, 2014
    Inventors: Donald Allen Pile, Henry J. John, JR.
  • Patent number: 8608880
    Abstract: A method for the retraction of an explosive component from a high explosive, including the steps of loading a high explosive containing an explosive component into an striping down vessel; supplying a supercritical fluid to the striping down vessel; contacting the high explosive with the supercritical fluid at a temperature below the melting point of the explosive component and at a pressure sufficient to strip down the explosive component; and inducing a sonicating process on the striping down vessel simultaneously at a frequency of 2 MHz to 10 MHz.
    Type: Grant
    Filed: March 7, 2013
    Date of Patent: December 17, 2013
    Assignee: Tai Cham Technology Co. Ltd.
    Inventors: Jin-Shuh Li, Taso-Fa Yeh, Kai-Tai Lu, Yung-Ho Chiu, Shou-Hsiu Chen
  • Patent number: 8444784
    Abstract: Insensitive munition-type explosive material and methods for forming insensitive munition-type explosive material are provided. In an exemplary embodiment, an insensitive munition-type explosive material comprises a particle of BNCP and a surfactant-comprising shell that encapsulates the particle of BNCP.
    Type: Grant
    Filed: December 14, 2009
    Date of Patent: May 21, 2013
    Assignee: Raytheon Company
    Inventors: Sami Daoud, Thomas R. Berger, Michael J. Villeburn
  • Publication number: 20130068354
    Abstract: A method of forming a gas generating composition containing a salt of dinitrosalicylic acid and ammonium nitrate or phase stabilized ammonium nitrate. The method involves the co-precipitation of a salt of 3,5-dinitrosalicylic acid with phase stabilized ammonium nitrate. A gas generating composition 12 is also presented along with a gas generator 10 containing the gas generating composition 12. 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: Application
    Filed: March 28, 2011
    Publication date: March 21, 2013
    Inventors: Slaven Domazet, Deborah L. Hordos, Sudhakar R. Ganta, Graylon K. Williams
  • Publication number: 20120282680
    Abstract: The present invention relates to a method of deactivating an explosive composition in order to render the composition safe. The present invention also relates to a cartridge that contains an explosive composition and that is adapted to achieve deactivation of the explosive composition in the event that it is not detonated as intended during use.
    Type: Application
    Filed: September 24, 2008
    Publication date: November 8, 2012
    Applicant: Orica Explosives Technology Pty Ltd
    Inventors: Richard Goodridge, Deane Tunaley, Steve Kotsonis, Les Armstrong, Brad Beikoff, Thomas Smylie
  • Patent number: 8273877
    Abstract: Substituted tetraazapentalenes have two benzenoid rings and eight substitutable positions. Substitutions are made of hydrogen or C—H groups in favor of amino groups, nitro groups or nitrogen atoms. The tetraazapentalenes are synthesized through an intermediate azo, which is made from a 1:1:1 molar ratio of a nitroaniline, sodium nitrite and an amine.
    Type: Grant
    Filed: November 18, 2011
    Date of Patent: September 25, 2012
    Assignee: The United States of America as Represented by the Secretary of the Navy
    Inventors: Alfred G. Stern, Patrick A. Caruana
  • Patent number: 8231746
    Abstract: Detecting a nitroaromatic explosive via an exothermic chemical reaction of the nitroaromatic explosive with a polyamine or polyamine functional group is accomplished by depositing a polyamine or polyamine-functionalized coating on a microelectrode array and a semiconductor substrate, introducing a nitroaromatic explosive to an exposed surface of the polyamine or polyamine-functionalized coating, and measuring changes in electrical properties of the polyamine or polyamine-functionalized coating associated with the introducing of the nitroaromatic explosive. The nitroaromatic explosive detector comprises a microelectrode array formed on a semiconductor substrate, a polyamine or polyamine-functionalized coating deposited on and contiguous with the microelectrode array and the semiconductor substrate, and a measuring device for measuring any of resistance, conductance, and capacitance across the microelectrode array.
    Type: Grant
    Filed: May 28, 2008
    Date of Patent: July 31, 2012
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventor: Victor J. Bellitto
  • Patent number: 8226782
    Abstract: A downhole device having an explosive component includes a high temperature stable explosive having thermal stability greater than 200° C.
    Type: Grant
    Filed: July 10, 2008
    Date of Patent: July 24, 2012
    Assignee: Schlumberger Technology Corporation
    Inventor: Philip Kneisl
  • Patent number: 8197619
    Abstract: A process for making metal-organic frameworks and metal-organic frameworks having host-guest complexes of either liquid energetics, solid energetics, or solid oxidizers.
    Type: Grant
    Filed: July 14, 2010
    Date of Patent: June 12, 2012
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: Andrew P. Nelson, Nirupam J. Trivedi
  • Publication number: 20120125493
    Abstract: A priming mixture is provided having a primary explosive and an oxidizer system containing bismuth oxide. The priming mixture generally is applicable to any application or device that employs ignition of a propellant or fuel, including, but not limited to, air bag gas generator systems, signaling devices, ejection seats, small or large arms ammunition primers, and the like.
    Type: Application
    Filed: February 1, 2012
    Publication date: May 24, 2012
    Inventors: Donald A. Pile, Henry J. John, JR.
  • Publication number: 20120060985
    Abstract: A precursor composition of a reactive material that comprises a metal material and an energetic material, such as at least one oxidizer or at least one class 1.1 explosive. The metal material defines a continuous phase at a processing temperature of the precursor composition and the energetic material is dispersed therein. The metal material may be a fusible metal alloy having a melting point ranging from approximately 46° C. to approximately 250° C. The fusible metal alloy may include at least one metal selected from the group consisting of bismuth, lead, tin, cadmium, indium, mercury, antimony, copper, gold, silver, and zinc. The reactive composition may have a density of greater than approximately 2 g/cm3. The reactive composition may also include a polymer/plasticizer system.
    Type: Application
    Filed: October 20, 2011
    Publication date: March 15, 2012
    Applicant: ALLIANT TECHSYSTEMS INC.
    Inventors: Benjamin N. Ashcroft, Daniel B. Nielson, Daniel W. Doll
  • Publication number: 20120024437
    Abstract: An ionic liquid is disclosed. A precursor composition that comprises at least one ionic liquid and at least one energetic material is also disclosed, as is a method of synthesizing an ionic liquid and a method of desensitizing an explosive composition.
    Type: Application
    Filed: July 6, 2011
    Publication date: February 2, 2012
    Applicant: ALLIANT TECHSYSTEMS INC.
    Inventors: Steven M. Nicolich, Alexander J. Paraskos, Daniel W. Doll, Gary K. Lund, Wendy A. Balas
  • Publication number: 20110259484
    Abstract: The invention relates to ignition sets comprising initial explosive substances selected from the group consisting of compounds, in particular compounds of lead, which are derived from trinitropolyphenols, such as trinitrophenol, trinitroresorcinol or hydrazoic acid, for example, in mixture with oxygen-generating substances, wherein further included are initial explosive substances made of alkali metal and/or alkaline-earth metal salts of dinitrobenzofuroxanes and oxygen-generating substances made from nitrates of ammonium, guanidine, aminoguanidine, triaminoguanidine, dicyanodiamidine and from the elements of sodium, potassium, magnesium, calcium, cerium and/or from multivalent metal oxides.
    Type: Application
    Filed: November 5, 2009
    Publication date: October 27, 2011
    Inventors: Ulrich Bley, Peter Simon Lechner
  • Publication number: 20110239887
    Abstract: A non-toxic, non-hydroscopic percussion primer composition and methods of preparing the same, including at least one explosive component that has been traditionally considered a moderately insensitive explosive or secondary explosive, and at least fuel particle component having a particle size of about 1.5 microns to about 12 microns, which allows the use of moderately active metal oxidizers. The sensitivity of the primer composition is created by the interaction between the moderately insensitive explosive and the fuel agent such that traditional primary explosives such as lead styphnate or DDNP are not needed. The primer composition also eliminates the risks and dangers associated with traditional nano-sized fuel particles.
    Type: Application
    Filed: March 31, 2010
    Publication date: October 6, 2011
    Applicant: ALLIANT TECHSYSTEMS INC.
    Inventors: Joel Sandstrom, Aaron A. Quinn, Jack Erickson
  • Patent number: 8016959
    Abstract: The invention relates to thermal pre-ignition agents and to their use as thermal fuses, in particular for use in gas generators of motor-vehicle safety systems.
    Type: Grant
    Filed: December 7, 2004
    Date of Patent: September 13, 2011
    Assignee: Ruag Ammotec GmbH
    Inventors: Rainer Hagel, Ulrich Bley
  • Publication number: 20110162547
    Abstract: A firing mixture which contains explosives, oxidizing and reducing agents is characterized in that it contains one or several explosives which can be fired by laser light. Also disclosed is a process for producing the same and its use.
    Type: Application
    Filed: December 9, 2010
    Publication date: July 7, 2011
    Inventors: Rainer Hagel, Dieter Hofmann, Bodo Preis, Klaus Redecker, Wolfram Seebeck
  • Patent number: 7942989
    Abstract: 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: Grant
    Filed: December 9, 2003
    Date of Patent: May 17, 2011
    Assignee: The Regents of the University of California
    Inventors: Michael J. Sailor, Frederic V. Mikulec, Joseph D. Kirtland
  • Publication number: 20110041968
    Abstract: The invention relates to a lead- and barium-free ignition charge which does not contain any oxidant, and its use.
    Type: Application
    Filed: May 23, 2007
    Publication date: February 24, 2011
    Inventors: Ulrich Bley, Rainer Hagel, Aleksej Hoschenko, Peter Simon Lechner, Frank Mönius
  • Publication number: 20110014096
    Abstract: The present invention provides a photoresponsive gas-generating material that is to be used in a micropump of a microfluid device having fine channels formed therein, and is capable of effectively generating gases for transporting a microfluid in response to light irradiation and transporting the microfluid at an improved transport efficiency. The present invention also provides a micropump incorporating the photoresponsive gas-generating material. A photoresponsive gas-generating material 13 is to be used in a micropump having fine channels formed in a substrate, and comprises a photo-sensitive acid-generating agent and an acid-sensitive gas-generating agent, and a micropump 10 has the photoresponsive gas-generating material 13 housed therein.
    Type: Application
    Filed: March 11, 2009
    Publication date: January 20, 2011
    Inventors: Masateru Fukuoka, Kazuki Yamamoto, Yoshinori Akagi, Hiroji Fukui
  • Patent number: 7857920
    Abstract: A propellant composition including, about 5 to about 30 weight % of a polymeric binder component having about 4 to about 10 weight % of at least one oxygen-rich pre-polymer, about 0.1 to about 2 weight % of at least one isocyanate curative, wherein the curative(s) react with alcohol groups on said pre-polymer(s) to formulate urethane linkages, about 1 to about 20 weight % of at least one plasticizer to improve processability and for oxygen balance of the composition, about 0.01 to about 1.0 weight % of at least one additive including cure catalyst(s) and stabilizer(s), about 1 to about 40 weight % of a mixture of high oxygen content insensitive gas generators in solid form, about 1 to about 50 weight % of at least one oxidizer, and wherein the composition is free of perchlorate.
    Type: Grant
    Filed: August 22, 2005
    Date of Patent: December 28, 2010
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventor: Mark H. Mason
  • Patent number: 7854811
    Abstract: A solvent-free process is used to make mouldable plastic explosives or mouldable plastic explosive simulant products.
    Type: Grant
    Filed: July 11, 2009
    Date of Patent: December 21, 2010
    Assignee: Kemzecur, Inc.
    Inventors: Albert Wartman, Bruce Barak Koffler
  • Publication number: 20100258221
    Abstract: 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: Application
    Filed: May 7, 2007
    Publication date: October 14, 2010
    Inventors: Sudhakar R. Ganta, Graylon K. Williams, Cory G. Miller
  • Patent number: 7744710
    Abstract: An explosive composition comprising a high density hydrocarbon compound selected from the group consisting of xylitol, sucrose, mannitol, and mixtures thereof and at least one energetic material. The high density hydrocarbon compound and the at least one energetic material form a substantially homogeneous explosive composition. A method of producing an explosive composition that is insensitive to impact is also disclosed.
    Type: Grant
    Filed: June 2, 2006
    Date of Patent: June 29, 2010
    Assignee: Alliant Techsystems Inc.
    Inventors: Daniel W. Doll, Nikki Rasmussen
  • Publication number: 20100096050
    Abstract: Universal modifiers from the class of organic and inorganic acids and their salts of new power systems of driving force on the basis of complex complete or/and incomplete nitrates (nitroesters) monoatomic (alcohols, alkanes), diatomic (diols, glycols, alkanediols), triatomic (triols, glycerin), multinuclear (of absolute valence) alcohols, cellulose, as well as nitroamines (nitramines), azides (azoimides), nitro compounds and compositions (substances) with mixed groups and their mixes purposefully modifying their thermodynamic (thermochemical) parameters (characteristics), mechanical, physical, chemical, biochemical properties.
    Type: Application
    Filed: October 12, 2007
    Publication date: April 22, 2010
    Inventors: Ivanov Yuri Alexandrovich, Frolov Alexander Yurievich
  • Publication number: 20100089271
    Abstract: This invention relates to the field of novel explosives, compositions and munitions comprising the same, as well as methods of synthesis and their use. The invention particularly relates to the field of explosives which are switchable between two different liquid crystalline states, and which possesses a general formula below. wherein M is a mesogenic core, R1 and R2 are independently selected terminal end groups attached to the mesogenic core, and wherein the mesogenic core contains sufficient (NO2)x to provide an explosive output. The explosive compound may form part of an explosive composition, which may be used as a high explosive fill for any part of a munition. The explosive composition may contain other components such as non-explosive LC compounds, or binders, or further known explosive compounds.
    Type: Application
    Filed: February 18, 2008
    Publication date: April 15, 2010
    Inventors: Martin E. Colclough, Peter J. Haskins, Ross W. Millar, Ian C. Sage
  • Publication number: 20100065170
    Abstract: An explosive composition comprising a high density hydrocarbon compound selected from the group consisting of xylitol, sucrose, mannitol, and mixtures thereof and at least one energetic material. The high density hydrocarbon compound and the at least one energetic material form a substantially homogeneous explosive composition. A method of producing an explosive composition that is insensitive to impact is also disclosed.
    Type: Application
    Filed: June 2, 2006
    Publication date: March 18, 2010
    Inventors: Daniel W. Doll, Nikki Rasmussen
  • Patent number: 7648602
    Abstract: A method for chemically neutralizing a nitroarene explosive uses a nitroarene hypergol having an ?,?-amine and an accelerant that is applied to the explosive composition to cause ignition of the explosive composition. The method may be used to neutralize active mines.
    Type: Grant
    Filed: December 15, 2006
    Date of Patent: January 19, 2010
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: William M. Koppes, David M. Rosenberg, Kerry A. Clark, Eric S. Schlegel, Brian W. Vos, Jody W. Lang, Andrea D. Warren
  • Publication number: 20090320974
    Abstract: A vehicle includes at least one polyoxymethylene structural support member. The polyoxymethylene structural support member includes a polyoxymethylene component that is a propellant that provides thrust to the vehicle upon pyrolysis or combustion of the polyoxymethylene component of the product of pyrolysis of the polyoxymethylene component. The vehicle can be a satellite or other type of spacecraft.
    Type: Application
    Filed: May 12, 2008
    Publication date: December 31, 2009
    Applicants: Physical Sciences, Inc., Alliant Techsystems Inc.
    Inventors: Prakash B. Joshi, Bernard L. Upschulte, Alan H. Gelb, B. David Green, Dean M. Lester, W. David Starrett, Ingvar A. Wallace
  • Publication number: 20090078346
    Abstract: The present invention provides an explosive composition of substantially reduced sensitivity and low flammability, being definable as an extremely insensitive detonating substance (EIDS) according to UN Regulations for the Transport of Dangerous Goods and comprising one or more explosive material 42-58% vol., one or more fire retardant material 15-26% vol. and a binder 20-36% vol.
    Type: Application
    Filed: April 11, 2006
    Publication date: March 26, 2009
    Inventors: Yael Cohen-Arazi, Edith Sokol, Samuel Friling, Ilan Shaked
  • Publication number: 20080245252
    Abstract: A percussion primer composition including at least one explosive, at least fuel particle having a particle size of about 1500 nm or less, at least one oxidizer, optionally at least one sensitizer, optionally at least one buffer, and to methods of preparing the same.
    Type: Application
    Filed: February 11, 2008
    Publication date: October 9, 2008
    Applicant: ALLIANT TECHSYSTEMS INC.
    Inventors: Jack Erickson, Joel Lee Sandstrom, Gene Johnston, Neal Norris, Patrick Braun, Reed Blau, Lisa Spendlove Liu, Rachel Hendrika Newell
  • Patent number: 7404867
    Abstract: An infrared decoy flare composition for generating infrared radiation, including a fuel, an oxidizing agent and a binder, wherein the decoy flare composition contains no metals or metal-containing compounds and no halogens or halogen-containing compounds. Such an infrared decoy flare composition can be particularly advantageously used in aerial infrared decoy flares for civil aircraft.
    Type: Grant
    Filed: August 25, 2005
    Date of Patent: July 29, 2008
    Assignee: Diehl BGT Defence GmbH & Co., KG
    Inventor: Ernst-Christian Koch
  • Patent number: 7344610
    Abstract: Sulfur free 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. Formulations include an ignition aid of a gluconic acid salt or an alkali metal nitrobenzoate salt or a mixture of the two salts in combination with various known oxidizing and reducing agents and with various known propellant additives. The oxidizing and reducing agents may be selected from the group consisting of carbon, lactose, potassium nitrate, potassium perchlorate, sodium benzoate, and mixtures thereof. The propellant additives may be selected from the group consisting of binders, burning rate modifiers, flow agents, colorants, coating agents, moisture retardants and mixtures thereof.
    Type: Grant
    Filed: January 28, 2003
    Date of Patent: March 18, 2008
    Assignee: Hodgdon Powder Company, Inc.
    Inventors: G. Dean Barrett, John A. Conkling
  • Publication number: 20080043385
    Abstract: The invention relates to thermal pre-ignition agents and to their use as thermal fuses, in particular for use in gas generators of motor-vehicle safety systems.
    Type: Application
    Filed: December 7, 2004
    Publication date: February 21, 2008
    Inventors: Rainer Hagel, Ulrich Bley
  • Patent number: 7067024
    Abstract: This melt-pourable explosive composition shares explosive properties comparable to those of trinitrotoluene and is melt-pourable and castable under conditions comparable to those of trinitrotoluene, but experiences equal or less impact, shock, and thermal sensitivity and avoids the issues of toxicity associated with trinitrotoluene. Trinitrotoluene is replaced with one or more mononitro aromatic and/or dinitro aromatic melt-pourable binders, such as dinitroanisole, which can be melt poured without presenting the toxicity drawbacks experienced with the use of TNT. The melt-pourable binder can also be combined with a processing aid selected from the group consisting of alkylnitroanilines and arylnitroanilines. The composition also includes oxidizer particles, which are preferably inorganic oxidizer particles.
    Type: Grant
    Filed: June 27, 2001
    Date of Patent: June 27, 2006
    Assignee: Alliant Techsystems Inc.
    Inventors: Daniel W. Doll, Jami M. Hanks, Alan G. Allred, John B. Niles
  • Patent number: 7056401
    Abstract: A priming mixture comprises aluminium silicate as the sensitizer, advantageously in a percentage higher than 10%, not exceeding 30% and preferably included between 15% and 25%. Combined with said sensitizer, the-mixture may further comprises a potassium compound, preferably potassium nitrate.
    Type: Grant
    Filed: February 14, 2003
    Date of Patent: June 6, 2006
    Assignee: Fiocchi Munizioni S.p.A.
    Inventor: Carlo Galluzzi
  • Patent number: 6997998
    Abstract: The subject of the present invention is lead- and barium-free propellant charges with primary explosives mixed with oxygen-supplying substances, characterized in that the primary explosives are selected from alkali metal and/or alkaline earth metal salts of dinitrobenzofuroxanes and the oxygen-supplying substances are chosen from metal peroxides, nitrates of ammonium, guanidine, aminoguanidine, triaminoguanidine, dicyanodiamidine, and the elements sodium, potassium, magnesium, calcium, cerium, and/or multivalent metal oxides. The propellant charges according to the invention exhibit increased stability with respect to known propellant charges that are free of harmful substances.
    Type: Grant
    Filed: January 8, 2004
    Date of Patent: February 14, 2006
    Assignee: Dynamit Nobel GmbH Explosivstoff-und Systemtechnik
    Inventors: Rainer Hagel, Klaus Redecker
  • Patent number: 6946042
    Abstract: In order to obtain a pyrotechnic body free of harmful materials, at least one primary explosive from a group of primary explosives is used, this group including atoxic metal cations of a mono- and a dinitrohydroxydiazobenzene (“diazinate”), a ditetrazole compound of highly nitrated organic compounds from salts of the ditetrazole and aromatic nitro bodies having easily replaceable molecular groups and atoxic metal cations of a dinitrobezofuroxane as primary explosives.
    Type: Grant
    Filed: November 13, 2002
    Date of Patent: September 20, 2005
    Inventor: Josef Köhler
  • Patent number: 6562159
    Abstract: An insensitive melt cast explosive composition obtained by dissolving an energetic copolyurethane thermoplastic elastomer (“ETPE”) in melted trinitrotoluene (“TNT”) is disclosed. The resulting ETPE-TNT solution is easy to mix with other ingredients such as nitramines, plasticizers, aluminum and can be processed with the existing melt cast facilities. The energetic solution can be poured into shells and upon cooling to produce a recyclable plastic bonded explosive. Instead of melted TNT, the same process works equally well with melted Octol or melted Composition B to dissolve the ETPE.
    Type: Grant
    Filed: June 26, 2001
    Date of Patent: May 13, 2003
    Assignee: Her Majesty the Queen in right of Canada, as represented by the Minister of National Defence
    Inventors: Guy Ampleman, Patrick Brousseau, Sonia Thiboutot, Charles Dubois, Emmanuela Diaz
  • Patent number: 6547899
    Abstract: A method for producing fine-grained triamino-trinitrobenzene (TATB) powders having improved detonation-spreading performance and hence increased shock sensitivity when compared with that for ultrafine TATB is described. A single-step, sonochemical amination of trichloro-trinitrobenzene using ammonium hydroxide solution in a sealed vessel yields TATB having approximately 6 &mgr;m median particle diameter and increased shock sensitivity.
    Type: Grant
    Filed: March 15, 2001
    Date of Patent: April 15, 2003
    Assignee: The Regents of the University of California
    Inventors: Kien-Yin Lee, James E. Kennedy
  • Publication number: 20020129880
    Abstract: A method for producing fine-grained triamino-trinitrobenzene (TATB) powders having improved detonation-spreading performance and hence increased shock sensitivity when compared with that for ultrafine TATB is described. A single-step, sonochemical amination of trichloro-trinitrobenzene using ammonium hydroxide solution in a sealed vessel yields TATB having approximately 6 &mgr;m median particle diameter and increased shock sensitivity.
    Type: Application
    Filed: March 15, 2001
    Publication date: September 19, 2002
    Inventors: Kien-Yin Lee, James E. Kennedy
  • Patent number: 6358339
    Abstract: A method of preparing 3,3′-diamino-4,4′-azofurazan is provided together with a composition of matter including a mixture of 3,3′-diamino-4,4′-azofurazan and 1,3,5-triamino-2,4,6-trinitrobenzene.
    Type: Grant
    Filed: April 28, 2000
    Date of Patent: March 19, 2002
    Assignee: The Regents of the University of California
    Inventors: Michael A. Hiskey, David E. Chavez, Robert L. Bishop, John F. Kramer, Scott A. Kinkead
  • Patent number: 6265573
    Abstract: A process for separating a nitramine or nitramine intermediate from water and volatile organic compounds comprises the steps of: (a) feeding a liquid stream comprising a liquid nitramine or nitramine intermediate, water, and at least one volatile organic compound, into the upper half of a stripper column; (b) feeding a gas stream having a temperature of at least about 120° C. into the lower half of the stripper column, whereby the gas stream and the liquid stream come into countercurrent contact in the stripper column; (c) withdrawing a nitramine or nitramine intermediate stream from the bottom of the stripper column; and (d) withdrawing a waste stream comprising gas and one or more of water vapor, water, formaldehyde, and acetic acid, from the top of the column.
    Type: Grant
    Filed: January 3, 2000
    Date of Patent: July 24, 2001
    Assignee: Schlumberger Technology Corporation
    Inventor: William J. Lukasavage
  • Patent number: 6230624
    Abstract: An electrically actuatable igniter (24) comprises a body (60), a pair of electrodes (40) and (42) associated with the body (60), a heating element (44) electrically connected between the electrodes (40) and (42), and an ignition droplet (46) covering and adhering to the heating element (44). The ignition droplet (46) comprises a particulate primary pyrotechnic material and a secondary pyrotechnic material. The secondary pyrotechnic material has a melting point below the autoignition temperature of the primary pyrotechnic material. The secondary pyrotechnic material is in the form of a continuous, solid matrix (112) containing and adhering together the particles (114) of the primary pyrotechnic material.
    Type: Grant
    Filed: August 13, 1999
    Date of Patent: May 15, 2001
    Assignee: TRW Inc.
    Inventors: Glenn R. Chatley, Jr., William P. Sampson
  • Patent number: 6225503
    Abstract: A method is disclosed for the preparation of very small particle size, relatively pure 1,3,5-triamino-2,4,6-trinitrobenzene (TATB). Particles of TATB prepared according to the disclosed method are of submicron size and have a surface area in the range from about 3.8 to 27 square meters per gram.
    Type: Grant
    Filed: April 3, 1992
    Date of Patent: May 1, 2001
    Assignee: The United States of America as represented by the United States Department of Energy.
    Inventors: Lester P. Rigdon, Gordon L. Moody, Raymond R. McGuire
  • Patent number: 6165294
    Abstract: A universal pyrotechnical percussion compositions used in rimfire ammunition and in cenerfire ammunition primers which is free of lead and other heavy metals. In the PCC of the present invention, the task of maintaining ecological purity of its burning products, absence of corrosion action on a barrel, increased shelf-life, with simultaneous increase of energetic parameters of primer and ballistic characteristics of a shot is achieved. The composition includes a base mixture of diazodinitrophenol, tetrazene and an inert organic or glass stablizer. To this base mixture, monopotassium styphnate or potassium dinitrobenzofuroxane is added. The mixture so created has a specific gravity of less than 1.7 grams per cubic centimeter.
    Type: Grant
    Filed: March 16, 1998
    Date of Patent: December 26, 2000
    Inventors: Alexander Evgenievich Fogelzang, Vladimir Petrovich Korolev, Vyacheslav Yurjevich Egorshev, Vasilij Ivanovich Kolesov, Valerij Dmitrievich Pochukaev, Yurij Matveevich Baskakov, Alexander Sergeevich Tokarev, Nikolaj Michajlovich Bibnev, Vladimir Nikolaevich Hovanskov, Irina Fedorovna Evdokimova, Yurij Pavlovich Voronin
  • Patent number: 5993577
    Abstract: A lead-free, heavy-metal free rim-fire priming composition consisting essentially of diazodinitrophenol (DDNP) as a primary explosive, a low percentage of a secondary sensitization explosive (tetracene), with a high percentage of abrasive (ground glass) and a very low percentage of an effective lead-free, heavy-metal-free oxidizer. A strong binder is added to aid in the installation and retention of the composition within the rim of the casings. A dye is also included for the sole purpose of facilitating visual inspection within the casing after installation of the composition within the rim. The high percentage by weight of the ground glass (46-60%) in combination with DDNP is of principal importance. The preferred mix is comprised of 29.8% of DDNP, 4.0 tetracene, 57.0% ground glass, and 7.5% potassium nitrate with 1.5% gum tragacanth added as a binder and 0.2% Prussian Blue as a dye.
    Type: Grant
    Filed: September 4, 1998
    Date of Patent: November 30, 1999
    Assignee: Federal Cartridge Company
    Inventors: Jack A. Erickson, John M. Melberg, Joel L. Sandstrom