Abstract: The disclosure relates to a process for the synthesis of substituted or unsubstituted aliphatic, cycloaliphatic or araliphatic chloroformates by reaction of the corresponding alcohol with phosgene, diphosgene and/or triphosgene. The reaction is carried out under a pressure of between 15×103 Pa and 85×103 Pa and at a temperature of between −30° C. and +50° C. The process is particularly well suited to the preparation of menthyl chloroformate and benzyl chloroformate.

Abstract: A device for igniting a solid pyrotechnic charge, including a conducting track, wherein the track consists of a conducting fluid deposited at least partially on the pyrotechnic charge, the pyrotechnic charge is deposited on a solid support and covers an empty cavity of the support, and the cavity forms a empty space between the pyrotechnic charge and the support.

Abstract: A subject-matter of the present invention is a safety igniter for a pyrotechnic munition component capable of being subjected to slow cook-off comprising a structure in the form of a casing and a solid pyrotechnic charge present in the structure. This safety igniter, which is composed solely of a block of solid pyrotechnic composition based on pentrite, is intended to bring about the combustion without detonation of the pyrotechnic charge when the munition component is subjected to slow cook-off.

Abstract: A fragmentation explosive munition element comprising a casing capable of generating fragments, having an axis of revolution, an explosive charge surrounded by the casing having the same axis of revolution and comprising a hole in the form of a cylindrical canal, the generatrices of which are parallel to the axis of revolution of the charge, a single peripheral and punctual means of initiating the charge. A design of this type makes it possible, for a given explosive charge, to obtain a markedly higher fragment velocity that is obtained with known designs.

Abstract: The present invention relates to a process for the selective decomposition of hydrazine in a hydrazine/substituted hydrazine/water mixture. A catalyst chosen from the group consisting of nickel supported on silica/alumina, the nickel-nickel oxide mixture supported on silica/alumina and rhodium supported on carbon is introduced into this mixture and then the mixture is heated at a temperature of between 60° C. and 120° C.

Abstract: The subject of the invention is a particularly simple and inexpensive process for manufacturing tin/tungsten composite elements having a thickness of between 1 mm and 6 mm, such as spherical shot for hunting cartridges or fishing sinkers, from a tin/tungsten powder blend. The powder blend is extruded, in the solid state, directly into a wire whose thickness is between 1 mm and 6 mm with an extrusion rate≦80 mm/s. Next, the wire is cut into pieces which are then forged to the desired shape, especially into spheres. The subject of the invention is also the aforementioned process for obtaining the wire.

Abstract: A subject-matter of the present invention is a safety igniter 5 for a pyrotechnic munition component comprising a structure 1 in the form of a jacket and a solid pyrotechnic charge 4 present in the structure 1. This safety igniter 5, which is composed solely of a block of solid pyrotechnic composition based on pentrite, is intended to bring about the combustion without detonation of the pyrotechnic charge 4 when the munition component is subjected to slow cook off.

Abstract: The technical field of the invention is that of devices for igniting pyrotechnic charges, and more specifically those suitable for small pyrotechnic charges which can be found in microsystems such as microvalves or micropumps.

Abstract: The present invention relates to a fragmentation explosive munition element comprising:

Abstract: The invention relates to gas-generating pyrotechnic compositions and to a continuous process which allows them to be prepared.

Abstract: The subject of the invention is a particularly simple and inexpensive process for manufacturing tin/tungsten composite elements having a thickness of between 1 mm and 6 mm, such as spherical shot for hunting cartridges or fishing sinkers, from a tin/tungsten powder blend.

Abstract: The invention relates to a process for the biological purification of a water containing ammonium perchlorate, characterized in that aqueous ammonium perchlorate solution is placed in contact, in a first, aerobic reactor, with an activated sludge in the presence of at least one source of mineral carbon and nutritional elements for the metabolism of the microorganisms, and then in that the liquid effluent leaving the first reactor is placed in contact, in a second, anoxic reactor, with an activated sludge, in the presence of at least one source of organic carbon and nutritional elements for the metabolism of the microorganisms. The process makes it possible to treat aqueous solutions containing very large amounts of ammonium perchlorate and to convert both the ammonium ions into molecular nitrogen and the perchlorate ions into chloride ions.

Abstract: A subject-matter of the present invention is novel polyglycidyl azides of general formula (I): in which: R1 represents an alkylene chain comprising 2 to 4 carbon atoms, R2 represents an alkyl chain comprising 1 to 4 carbon atoms, x represents an integer such that 4≦x≦10. These compounds are not detonatable and are of use in particular as energetic plasticizers in solid pyrotechnic compositions. They can be obtained according to a 3-stage process starting from epichlorohydrin by preliminary synthesis of polyepichlorohydrin with a hydroxyl terminal group of formula (II): then acylation of this compound in order to obtain a polyepichlorohydrin with an acyloxy terminal group of formula (IV): and then azidation of this compound.

Abstract: The present invention relates to a non-lethal projectile for a firearm composed of a novel, soft and elastic, composite material comprising a polymeric organic matrix and a pulverulent metallic filler, with a relative density of between 4 and 22, dispersed in the polymeric matrix. The composite material has a relative density of between 1.0 and 2.9 and a Shore A hardness of between 2 and 30. The polymeric organic matrix is a crosslinked polybutadiene comprising polybutadiene chains with a mass of between 500 and 10,000 connected by bridges. The projectile according to the invention makes it possible to neutralize an animal or a person without endangering his life and without inflicting serious injuries, even when firing at a short range of less than 5 m.

Abstract: The invention relates to novel non-detonatable pyrotechnic materials which have a thickness of less than 500 .mu.m or a mass of less than 15 mg, whose combustion is self-sustainable after localized initiation by an electrical power of between 150 mW and 800 mW, for a time of between 20 ms and 600 ms, and which comprise from 25 to 80% by weight of an energy-releasing binder based on poly(glycidyl azide), or on poly(3,3-bis[azidomethyl]oxetane) or on a polyester or polyether and on at least one energy-releasing plasticizer, from 10 to 70% by weight of ammonium perchlorate, the particle size of which is between 0.5 and 30 .mu.m, and from 0% to 45% by weight of at least one nitramine.These novel materials are used as miniature gas generators, miniature propulsion units or miniature heat generators.

Abstract: The invention relates to a process for the preparation of N-substituted lactams by reaction of a lactam, which is unsubstituted on the nitrogen, with an organic halide in the presence of at least one solid-liquid phase transfer catalyst, such as a quaternary ammonium salt, and of at least one solid inorganic base, such as an alkali metal hydroxide, and in the absence of solvent. By this process, N-substituted lactams are obtained with good yields and high purity. The absence of solvent makes possible a considerable gain in productivity and an improvement in safety and in regard for the environment.

Abstract: Process for producing the epsilon polymorphic form of hexanitrohexaazaisowurtzitane.According to the process which is the subject-matter of the invention, a saturated solution of hexanitrohexaazaisowurtzitane of any polymorphic form is prepared in a mixture comprising a solvent chosen from esters, nitrites, ethers and ketones, except acetone, and a non-solvent chosen from aliphatic hydrocarbons and aromatic hydrocarbons, the solvent being more volatile than the non-solvent.This saturated solution is subsequently seeded with a few crystals of hexanitrohexaazaisowurtzitane of epsilon polymorphic form and then the mixture is concentrated by evaporation of the solvent.This process is simple, is economical and can be easily extrapolated to the industrial stage.It makes it possible to obtain particle size fractions within the 10 .mu.m-100 .mu.m range with smooth grains with regular facies.

Abstract: The invention relates to a process and an installation for destroying munitions containing toxic agent. The process comprises equipping the munitions with a pyrotechnic fragmentation device and submerging in a pool which is filled with a liquid for neutralizing the toxic agent, closing the pool with a lid so that the pool is sealed with respect to toxic emanation, and igniting the pyrotechnic device so that the munitions is fragmented and releases the toxic agent into the pool. After the fragmentation of the munitions is neutralized with the neutralizing liquid, the pool is reopened for another cycle of destruction. The advantage is of completely destroying the munitions in a single operation cycle without the risk of contamination. The invention is applicable to the destruction of munitions containing chemical or bacteriological toxic agents.

Abstract: The invention relates to a low-vulnerability explosive munitions element comprising a casing containing a multicomposition explosive charge, the innermost layer of which is a composite explosive comprising a filled polyurethane or polyester polymer matrix, the filling of which contains more than 20% by weight of organic nitrate explosive, and the peripheral layer of which is a pyrotechnic composition of the family of composite solid propellants comprising a filled polyurethane or polyester polymer matrix the filling of which contains at least one mineral oxidant and less than 17% by weight of organic nitrate explosive. The blast and/or bubble effect produced is close to that produced by the much more-vulnerable charge of monocomposition composite explosive of equivalent mass. The invention also relates to a method for obtaining a blast and/or bubble effect by releasing in the casing of an aforementioned munitions element according to the invention, and then rupture of the casing.

Abstract: The invention relates to a low-vulnerability explosive munitions element comprising a casing containing a multicomposition explosive charge, the innermost layer of which is a composite explosive comprising a filled polyurethane or polyester polymer matrix, the filling of which contains more than 40% by weight of organic nitrate explosive, and the peripheral layer of which is a pyrotechnic composition of the family of composite solid propellants comprising a filled polyurethane or polyester polymer matrix the filling of which contains at least one mineral oxidant and less than 10% by weight of organic nitrate explosive. The blast and/or bubble effect produced is close to that produced by the much more-vulnerable charge of monocomposition composite explosive of equivalent mass. The invention also relates to a method for obtaining a blast and/or bubble effect by releasing in the casing of an aforementioned munitions element according to the invention, and then rupture of the casing.