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Class 149/19.92 - Process


Subclass of Class 149 - Explosive and thermic compositions or charges
Definition: Processes for the preparation of products containing the
No. of patents: 183
Last issue date: 04/03/2012


1          
NumberTitleIssue Date
8147628Method for producing cryogenic, solid monopropellants and solid propellants produced according to said method
The invention relates to a method for producing (cryogenic) solid monopropellants which are cooled to below room temperature and are used for rocket drives, especially using heterogeneous liquid-solid propellants wherein at least one of the reactants in the form of ...
04/03/2012
8075716Process for preparing energetic materials
Sol-gel chemistry is used for the preparation of energetic materials (explosives, propellants and pyrotechnics) with improved homogeneity, and/or which can be cast to near-net shape, and/or made into precision molding powders. The sol-gel method is a synthetic chemi...
12/13/2011
7824511Method of making GAP propellants by pre-reacting a metal fuel with isocyanate before mixing with binder and plasticizer
A method for making high energy compositions, such as propellants, explosives, pyrotechnics or the like, including a solid metal particulate fuel dispersed in a cured binder matrix. The compositions are formed with ingredients including a particulate metal fuel such...
11/02/2010
7370565Apparatus for mixing explosive materials and for filling of ordnance
Described herein is apparatus for the mixing of explosive materials utilising a static mixer (26) for combining pre-mix explosive material and hardener prior to introducing the combined mixture into any ordnance (38). ...
05/13/2008
7288648High temperature crystallization of 2,4,6,8,10,12-hexanitro-2,4,6,8,10,12-hexaazatetracyclo[5.5.0.05,903,11]-dodecane
A method of crystallizing an epsilon-polymorph of 2,4,6,8,10,12-hexanitro-2,4,6,8,10,12-hexaazatetracyclo[5.5.0.05,903,11]-dodecane (CL-20). The method comprises combining the CL-20, at least one organic solvent, and at least one nonsolvent to ...
10/30/2007
7211607Method for producing high surface area chromia materials for catalysis
Nanostructured chromium(III)-oxide-based materials using sol-gel processing and a synthetic route for producing such materials are disclosed herein. Monolithic aerogels and xerogels having surface areas between 150 m2/g and 520 m2/g have been p...
05/01/2007
7189289Cleaning agent and method for cleaning heater tubes
Disclosed is a cleaning agent for heater tubes, which is capable of eliminating deposits such as soot particulates in tubes installed in industrial heaters that typically use oil, coal or gas. The cleaning agent of the present invention is prepared by formulating a ...
03/13/2007
7108758Electrostatic charge dissipation system
An electrostatic charge reduction system including a composition having at least one energetic particle component with or without a non-conducting binder, and conducting polymer or electrically neutral polymer deposited on the energetic component in its oxidized for...
09/19/2006
7063810Co-extrusion of energetic materials using multiple twin screw extruders
The invention comprises a continuous, integrated process to produce a multiple layered energetic material where the layers comprise energetic materials having, at least, two different burning rates. The process uses at least two twin-screw extruders to process at le...
06/20/2006
7052562Methods for making and using high explosive fills for very small volume applications
High explosives suitable for filling very small volume loading holes in micro-electric initiators for micro-electro-mechanical mechanisms, used as safe and arm devices, are prepared from slurries of crystalline energetic materials and applied using various methods. ...
05/30/2006
6997997Method for the synthesis of energetic thermoplastic elastomers in non-halogenated solvents
A method is provided for preparing thermoplastic elastomers. A blocks of the thermoplastic elastomers are crystalline at temperatures below about 60° C. and are derived from oxetane derivatives and/or tetrahydrofuran derivatives. B blocks of the thermoplastic elast...
02/14/2006
6992185Crystallization of 2,4,6,8,10,12-hexanitro-2,4,6,8,10,12-hexaazatetracyclo[5.5.0.05,903,11]-dodecane
A method is provided in which 2,4,6,8,10,12-hexanitro-2,4,6,8,10,12-hexaazatetracyclo[5.5.0.05,903,11]-dodecane (CL-20 or HNIW) is crystallized to its ε-polymorph by an inverse precipitation technique. A dry CL-20 solvent solution containing a...
01/31/2006
6986818Method for producing nanostructured metal-oxides
A synthetic route for producing nanostructure metal-oxide-based materials using sol-gel processing. This procedure employs the use of stable and inexpensive hydrated-metal inorganic salts and environmentally friendly solvents such as water and ethanol. The synthesis...
01/17/2006
6982013Electrostatic charge dissipation compositions including energetic particles
An electrostatic charge dissipation composition having at least one energetic particle component and at least one electrically active polymer is coated on the energetic component and thereafter, the polymer coating is oxidized. In another embodiment, the electrostat...
01/03/2006
6964715High impetus, high burn rate gas generant propellant and seatbelt pretensioner incorporating same
Gas generating compositions having a fuel preferably comprising a mixture of 5-aminotetrazole (5-AT), azodicarbonamide (ADCA), an oxidizer, and a superfine metal powder burn rate enhancer such as nano-aluminum, for use in automotive seatbelt pretensioners and other ...
11/15/2005
6936120Semi-continuous two-pack process for casting solid propergol paste
A process for casting propellant paste into a mould to manufacture a block of solid propellant includes first mixing two groups of components briefly at low pressure, mixing the two groups of components at high pressure, and casting the mixture in a mould. The first...
08/30/2005
6913661Ammonium nitrate propellants and methods for preparing the same
The present invention is directed to an age-stabilized and/or strengthened ammonium nitrate propellant composition wherein the strengthening agent is selected from the group consisting of azodicarbonamide, dicyandiamide, oxamide and mixtures thereof and wherein the ...
07/05/2005
6905561Solid rocket propellant
A solid rocket propellant includes a hydroxy-terminated caprolactone ether binder and an oxidizer. The propellant may be disposed of by contacting it with an aqueous solution of 12 N NaOH or 6 N HCl at a temperature of about 140° F. for about 24 hours to decompose ...
06/14/2005
6902637Process for preparing free-flowing particulate phase stabilized ammonium nitrate
A process for preparing free-flowing, phase-stabilized ammonium nitrate comprises the following steps. A solution of ammonium nitrate (12), a surfactant (13), a phase stabilizer (26), and an inert liquid (20) is prepared. The solution is ...
06/07/2005
6896751Energetics binder of fluoroelastomer or other latex
A propellant composition including a fuel, an oxidizer, and a latex binder and method of making, wherein the method of making eliminates the need for the large amounts of volatile, flammable solvents that are typically associated with the traditional process. ...
05/24/2005
6818081Inorganic metal oxide/organic polymer nanocomposites and method thereof
A synthetic method for preparation of hybrid inorganic/organic energetic nanocomposites is disclosed herein. The method employs the use of stable metal in organic salts and organic solvents as well as an organic polymer with good solubility in the solvent system to ...
11/16/2004
6783616Method to produce pyrotechnical igniting mixtures
The invention relates to pyrotechnic primer charges produced on the basis of metal powders or metal hydride powders, potassium perchlorate and binders. In order to obtain a homogenous mixture, the powdery components are mixed with a liquid dispersing agent in a susp...
08/31/2004
6736913Method for processing explosives containing 2,4,6,8,10,12-hexanitro-2,4,6,8,10,12-hexaazatetracyclo [5.5.0.05,903,11]-dodecan (CL-20) with naphthenic and paraffinic oils
A method for processing explosives containing a high loading of CL-20 may advantageously include a binder system having naphthenic oil and/or paraffinic oil. Solid energetic ingredients are added into the binder system and mixed to form a free-flowing suspension in ...
05/18/2004
6730181Process for making stable cured poly(glycidyl nitrate)
A process is provided in which at least one polyol having a hydroxyl functionality of at least three, preferably four, serves as a polymerization initiator. The polyol initiator is optionally, although preferably, reacted with a catalyst to form a catalyst-initiator...
05/04/2004
6726788Preparation of strengthened ammonium nitrate propellants
The present invention is directed to an age-stabilized and/or strengthened ammonium nitrate propellant composition wherein the strengthening agent is selected from the group consisting of azodicarbonamide, dicyandiamide, oxamide and mixtures thereof and wherein the ...
04/27/2004
6712917Inorganic metal oxide/organic polymer nanocomposites and method thereof
A synthetic method for preparation of hybrid inorganic/organic energetic nanocomposites is disclosed herein. The method employs the use of stable metal inorganic salts and organic solvents as well as an organic polymer with good solubility in the solvent system to p...
03/30/2004
6666935Sol-gel manufactured energetic materials
Sol-gel chemistry is used for the preparation of energetic materials (explosives, propellants and pyrotechnics) with improved homogeneity, and/or which can be cast to near-net shape, and/or made into precision molding powders. The sol-gel method is a synt...
12/23/2003
6630040Slurry coating method for agglomeration of molding powders requiring immiscible lacquer solvents
Solutions and process are described useful to produce coated HE powder granules in an aqueous slurry agglomeration process. A reaction mixture is made utilizing a lacquer stock solution comprising a binder material dissolved in a substantially aqueous-imm...
10/07/2003
6589374Pourable, plastic-bound explosive charges and method of making the same
A pourable, plastic-bound explosive charge has a crystalline explosive substance embedded in a polymer matrix which includes a binder, a softener and a metal powder. The metal powder which is added in a proportion of 0.1 to 10 weight % has substantially s...
07/08/2003
6485587Coating process for plastic bonded explosive
A method of making a batch of explosive molding powder including preparing a lacquer comprising an organic solvent, a binder and if required, a plasticizer; adding water to a kettle; adding explosive material to the kettle; adding the lacquer to the kettl...
11/26/2002
6416600Process for the production of an exothermically reacting composition
A process for the production of an exothermically reacting composition, such as a propellant or explosive, containing at least one normally solid reactive constituent comprises the steps of: forming a uniform dispersion of the ingredients of the said compositi...
07/09/2002
6409854Low burning rate, reduced hazard, high temperature incendiary
A high temperature incendiary composition having a reactive material of titanium, a second reactive material of boron, an oxidizer of polytetrafluoroethylene in an amount of from about 10 weight percent or less of the composition and a binder of carboxyl-...
06/25/2002
6402864Low slag, reduced hazard, high temperature incendiary
A high temperature incendiary composition having a reactive material of titanium, a second reactive material of boron, an oxidizer of polytetrafluoroethylene in an amount of from about 20 weight percent or greater of the composition and a binder of CTBN i...
06/11/2002
6395112Hydrolyzable polymers for explosive and propellant binders
A degradable polymer has an ester component adjacent to a poly(oxyethylene) component in the polymer chain. The hydrophilic nature of the poly(oxyethylene) draws water close to the ester in the polymer chain, which increases the rate of hydrolysis of the ...
05/28/2002
6362311Polymerization of poly(glycidyl nitrate) from high purity glycidyl nitrate synthesized from glycerol
Glycerol is nitrated with at least one nitrating source in a solvent to form a nitrated glycerol solution containing dinitroglycerin. The nitrated glycerol solution is treated with at least one cyclizing agent to convert the dinitroglycerin into glycidyl ...
03/26/2002
6336981Process to manufacture an object using a granular material igniter tube and propellant charge obtained using such a process
The invention relates to a process to manufacture an object using at least one granular material (16) having a large particle size, for example greater than or equal to 0.1 mm, such process being characterised by the following stages: the granular materia...
01/08/2002
6319341Process for preparing a gas generating composition
A process for preparing a gas generating composition (62) for a vehicle occupant protection apparatus (110) comprises the following steps. Desired quantities of ingredients of the gas generating composition (62) measured in predetermined amounts according...
11/20/2001
6305286Preparation of an igniter with an ultraviolet cured ignition droplet
An electrically actuatable igniter (24) includes a header (50), a pair of electrodes (40) and (42) in the header (50), a heating element (44) electrically connected between the electrodes (40) and (42), and a dome shaped ignition droplet (46) covering and...
10/23/2001
6264772Pyrotechnical, aerosol-forming composition for extinguishing fires and process for its preparation
The invention relates to fire-extinguishing technology, in particular a process for producing aerosol-forming pyrotechnical compositions for extinguishing fires. The process includes the steps of mixing powdery combustible binder, oxidizing agent and dicy...
07/24/2001
6238501TNAZ compositions and articles, processes of preparation, TNAZ solutions and uses thereof
The invention is a composition containing high loadings of TNAZ that are made by crash precipitation with water as the precipitation agent. The compositions are in the form of powders, which can be formed and shaped by presseing, extrusion, etc. The TNAZ ...
05/29/2001
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