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Assignee: Societe Nationale des Poudres et Explosifs


Location: Paris, FR
No. of patents: 162

1          
NumberTitleIssue Date
6533878Pyrotechnic compositions generating non-toxic gases based on ammonium perchlorate
The invention concerns pyrotechnic mixtures generating non-toxic gases characterised in that they essentially consist of a cross-linkable reducing binder based on epoxy resin or silicone resin, an oxidising filler based on ammonium perchlorate and a chlor...
03/18/2003
6479690Phosgenation under pressure of alcohol's for producing chloroformates
The invention concerns a method for phosgenation of monohydroxy alcohol's and/or polyols characterised in that it consists of treating alcohol and or polyol, whether in the presence of solvent or not, with a molar excess of phosgene, preferably 2 to 30 ti...
11/12/2002
6155254Self-contained device for chemically producing high-pressure breathing oxygen
The invention relates to a self-contained device for generating high-pressure breathing oxygen, of the type comprising an oxygen-generating chemical candle (3), a gastight confinement chamber composed of a body (1) and of a cover (2), in which chamber the...
12/05/2000
6148610Solid propellant charge for a propulsion unit and propulsion unit equipped with such a charge
A solid propellant charge for a propulsion unit (1). The latter includes a casing (2) containing the solid propellant charge (3), in the form of an elongated body having a longitudinal axis (X--X), which charge (3) has, over part of its longitudinal exten...
11/21/2000
6101949Non-toxic composite projectiles having a biodegradable polymeric matrix for hunting or shooting cartridges
Composite spherical projectiles are provided for shotgun cartridges which are environmentally compatible, relatively inexpensive and have ballistic properties similar to lead shot or projectiles and which consist of metal particles dispersed in a biograda...
08/15/2000
6024811Pyrotechnic composition generating clean gases with low levels of nitrogen oxides, and pellets of such a composition
The present invention relates to gas-generating pyrotechnic compositions. The compositions according to the invention contain a small amount of epoxy binder, stabilized ammonium nitrate, optionally potassium perchlorate or an organic oxidant containing nitroge...
02/15/2000
5910617Process for the preparation of aliphatic or cycloaliphatic chlorides
The process according to the invention consists in preparing chlorides of aliphatic or cycloaliphatic hydrocarbons by reacting the corresponding mono- or polyalcohol with phosgene or thionyl chloride in the presence of at least one catalyst chosen from he...
06/08/1999
5831339Continuous process for solvent-free manufacture of heat-curable composite pyrotechnic products
The present invention relates to the field of the continuous manufacture of composite pyrotechnic products. A heat-curable liquid binder (3) is mixed with a thickening filler (4) in a mixer (1) so as to obtain a viscous premix (2) which is unreactive at a...
11/03/1998
5734060Method of preparing acylisocyanates
The invention relates to a novel process for the preparation of acyl isocyanates which consists in reacting oxalyl chloride with an N-trialkylsilylcarboxamide or an N,N-bis(trialkylsilyl)carboxamide. The process makes it possible to obtain acyl isocyanates in ...
03/31/1998
5723812Stabilized ammonium nitrate
The invention relates to stabilized ammonium nitrate which no longer exhibits a transition point at 32° C. Its subject-matter is a new process for stabilizing ammonium nitrate and the new stabilized ammonium nitrate thus obtained. The stabilized ammonium nitr...
03/03/1998
5723704Process for the preparation of alkyl chlorides
Process for the preparation of alkyl chlorides, characterized in that: a) in a first stage a primary mono- or polyhydric alcohol, which has a C4 -C30 carbon chain which is saturated, substituted or otherwise by one or more chlorine atoms ...
03/03/1998
5714081Dismountable mechanical core and procedure for implementing it
A dismountable mechanical core (1) includes a counterform (2) attached to a central mandrel (3,8), the counterform components being able to be handled remotely and with complete safety. These components of the counterform are connected and attached to the...
02/03/1998
5690867Process for the manufacture of an explosive ammunition component with controlled fragmentation
The invention relates to a process for the manufacture of an explosive ammunition component with controlled fragmentation, comprising a charge of solid explosive contained in a metal casing internally clad with a sleeve externally provided with indentatio...
11/25/1997
5672770Process for the preparation of methyl 1,1-dichloromethyl ether or of ethyl 1,1-dichloromethyl ether
The invention relates to a process for the preparation of methyl 1,1-dichloromethyl ether or of ethyl 1,1-dichloromethyl ether, according to which methyl formate or ethyl formate is reacted with phosgene, diphosgene, triphosgene or oxalyl chloride or one ...
09/30/1997
5659032Process for the synthesis of 2,4,6,8-tetranitro-2,4,6,8-tetraazabicyclo (3.3.0) octane
The invention relates to a new process for the synthesis of 2,4,6,8-tetranitro-2,4,6,8-tetraazabicyclo-[3.3.0]octane (bicyclo-HMX) by reaction of nitronium tetrafluoroborate with 2,4,6,8-tetraacetyl-2,4,6,8-tetraazabicyclo[3.3.0]octane in the presence ...
08/19/1997
5648537Process for the synthesis of substituted carbodiimides
The invention relates to a new process for the synthesis of a disubstituted carbodiimide, including a first stage of phosgenation of an N,N'-disubstituted urea in an organic solvent medium. After this first stage ammonia is added to the reaction mixture withou...
07/15/1997
5639987Compositions modifying ballistic properties and propellants containing such compositions
The present invention lies in the field of compositions which modify the ballistic properties of solid propellants and in that of the double-base solid propellants containing these compositions. Various lead compounds are known to be effective in this fun...
06/17/1997
5610444Process for continuous manufacture of pyrotechnic charges containing a silicone binder and compositions capable of being used by this process
The invention relates to a process for continuous manufacture of pyrotechnic charges containing a silicone binder and to the compositions capable of being used by this process. The following are introduced continuously into an extruder (1): a mixture A of a cr...
03/11/1997
5596232Continuous process for the solventless manufacture of composite pyrotechnic products
Continuous process for the manufacture of thermoformable composite pyrotechnic products comprising at least one thermoplastic or quasi-thermoplastic binder and an organic or inorganic crystalline oxidizing charge, which are mixed and homogenized on a roll...
01/21/1997
5525171Pyrotechnic compositions generating clean and nontoxic gases, containing a thermoplastic elastomer binder
The present invention relates to the field of gas-generating pyrotechnic compositions intended for motor vehicle safety. The compositions according to the invention include: an oxygen-containing thermoplastic binder and especially a block aliphatic copolymer o...
06/11/1996
5468312Ignition-sensitive low-vulnerability propellent powder
The present invention relates to low-vulnerability propellent powders for weapons. The powders according to the invention consist of at least one organic nitro compound and an organic binder and are characterized in that they contain at least one additive...
11/21/1995
5458706Solid pyrotechnic compositions with a thermoplastic binder and a polybutadiene silylferrocene plasticizer
The object of the present invention is novel solid pyrotechnic compositions with a loaded and plasticized thermoplastic binder, which can be used notably as propellants with non-polluting combustion, as propellants with a high combustion rate or as compos...
10/17/1995
5454323Combustible container elements for artillery ammunition, method of manufacture and use of such elements
The present invention relates to combustible container elements (24) for artillery ammunition. The said elements, obtained by felting, compacting and stoving, have a plane axisymmetric part (2,7), an outer wall (5,10) and an inner neck (4,9) which are int...
10/03/1995
5446458Process for the fastening of an element absorbing electromagnetic waves on a wall of a structure or an infrastructure
The invention pertains to a process to fasten an intrinsic element absorbing electromagnetic waves onto a wall of a structure or infrastructure. The process of the invention consists of coating a surface of a wall of a structure by means of a syntactic fo...
08/29/1995
5400690Multi-receptacle pyrotechnic cartridges and corresponding ammunition
The present invention falls within the sector of infrared or electrogmagnetic decoys for protecting light aircraft or helicopters. It relates more particularly to pyrotechnic cartridges and to ammuniton comprising racks receiving the cartridges. This inve...
03/28/1995
5390605Stabilized and propelled decoy, emitting in the infra-red
The present invention lies in the field of infra-red decoys for protecting aircraft. It relates more particularly to a stabilized decoy (4, 21) propelled over a trajectory and with directed infra-red emission, comprising a body (22) open over its rear par...
02/21/1995
5386057Process for the preparation of acyl isocyanates
The invention concerns a process for the preparation of acyl isocyanates which consists of reacting oxalyl chloride with a salt selected from the group consisting of hydrohalides and sulphates of carboxamides and/or carbamates, unsubstituted on nitrogen, ...
01/31/1995
5359918Multi-receptacle pyrotechnic cartridges and corresponding ammunition
In the field of infrared or electromagnetic decoys for protecting light aircraft or helicopters, pyrotechnic cartridges and ammunition comprising racks receiving the cartridges are described. Thus it is possible for the same volume of ammunition to have a...
11/01/1994
5360836Process for the production of coatings by radiation cross-linking
The subject of the invention is a process for the production of coatings by radiation crosslinking of compositions containing a resin which can be cured by the polymerization of the double bonds >C.dbd.CH2 and a reactive diluent system containi...
11/01/1994
5348923Silica-based substrates modified by grafting of polyalkylguanidinium groups, their process of manufacture and their use as catalysts
Silica-based substrate surface-modified by grafting covalent links of organic polysubstituted guanidinium groups, and preferably polyakylguanidinium groups. These substrates can be obtained by reacting silica with a polyalkylguanidinium anion, the silanol...
09/20/1994
5328736Apparatus and process for impregnating fibers with an aerosol of electrostatically charged polymer powder particles
Apparatus and continuous process for impregnating fibers with polymer powders in which the fibers are caused to circulate in an aerosol passed through a fluidized bed contained in an earthed fluidization vessel. The particles constituting the fluidized be...
07/12/1994
5326796Use of an arylsulphonylurethane as film forming resin in nitrocellulose nail varnishes, new arylsulphonylurethanes and new nitrocellulose nail varnishes
The present invention lies in the field of nitrocellulose nail varnishes and its subject is the use of an arylsulphonylurethane as film forming resin in these varnishes, which makes it possible in particular to avoid the release of formaldehyde, a carcino...
07/05/1994
5310159Destructible core for undercut casting
Destructible cores useful particularly for shaping the internal channels of cast propellant blocks. The cores include at least one elongated element which is shaped, for example by winding, the cohesion of which is ensured by way of a joining material and...
05/10/1994
5283358Process for obtaining aryl esters by O-dealkylation and applications
Process for obtaining aryl esters by O-dealkylation of an alkyl aryl ether with an acyl halide in the presence of a catalyst chosen from hexaalkylguanidinium salts and tetraalkylphosphonium salts. The alkyl aryl ether corresponds preferentially to the formula ...
02/01/1994
5277118Semicombustible cartridge case
Cartridge case member with a combustible tube, ammunition with a semicombustible cartridge case incorporating this member and process for filling this ammunition. The present invention relates to the field of combustible ammunition and relates more partic...
01/11/1994
5251549Multi-perforated divided propellent powder sticks, manufacturing equipment and its use
The present invention relates to propellent powders in multi-perforated sticks (1) divided by radial slits (7) cutting the peripheral channels (6) of the stick (1) but allowing a continuous cover (8) to remain around its central channel (5). The invention...
10/12/1993
5247888Semi combustible cartridge
Cartridge case member with a combustible tube, ammunition with a semicombustible cartridge case incorporating this member and process for filling this ammunition. The present invention relates to the field of combustible ammunition and relates more partic...
09/28/1993
5243916Explosive munition component of low vulnerability, comprising a dual composition explosive charge and process for obtaining a fragmentation effect
The present invention relates to an effective and explosive munition component of low vulnerability, consisting of a casing 1 containing an explosive charge consisting of an internal layer 2 made of plastic bonded explosive in which the filler contains at...
09/14/1993
5214175Process for the synthesis of monohaloalkylferrocenes and 4-chlorobutylferrocene
The present invention relates to a process for the synthesis of a monohaloalkylferrocene by reaction of hydrogen with a monohaloalkanoylferrocene in the presence of PtO2 and SnCl2 as catalyst in an acetic acid medium. In this manner,...
05/25/1993
5202454Process for the manufacture of 1-bromoalkyl hydrocarbyl carbonates
The invention relates to a new process for the preparation of 1-bromoalkyl hydrocarbyl carbonates. The carbonates according to the invention are prepared by reacting an alpha-chlorinated carbonate of formula ##STR1## with an anhydrous brominated comp...
04/13/1993
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