Abstract: A method for synthesising polyepichlorohydrin including: a) reacting epichlorohydrin with boron trifluoroetherate in the presence of a polymerisation initiator; b) adding a good solvent for epichlorohydrin to the reaction product obtained in step a); c) adding epichlorohydrin to the reaction product obtained in step b).

Abstract: A method for synthesising polyepichlorohydrin includes: a) reacting epichlorohydrin with boron trifluoroetherate in the presence of a solvent; b) adding epichlorohydrin to the reaction product obtained in step a); c) hydrolysing the product obtained in step b).

Abstract: A device for depositing paste patterns on the surface of the channel of a tube, the device comprising a frame supporting a first mechanical assembly for holding, positioning and moving the tube, and a second mechanical assembly for extruding paste for depositing said paste patterns, the assemblies cooperating with one another.

Abstract: An igniter tube consisting of a combustible tube, on the inner face of which an ignition charge is deposited along the length of said combustible tube. The invention also relates to a method for producing the igniter tube.

Abstract: A device for depositing paste patterns on the surface of the channel of a tube, the device comprising a frame supporting a first mechanical assembly for holding, positioning and moving the tube, and a second mechanical assembly for extruding paste for depositing said paste patterns, the assemblies cooperating with one another.

Abstract: A process for the sigmatropic rearrangement of the compound of formula in which R3 is an NO2 group and R4 is either a hydrogen or an NO2 group, includes heat treating the compound by microwave.

Abstract: A method for obtaining the explosive charge in dry granular form as well as a device suitable for implementing the method. The method includes: filtering the suspension, by passing same through a static filter in order to obtain a cake containing the granular explosive charge agglomerated by residual liquid; dewatering the cake by subjecting the cake to pressurized gas; splitting the dewatered cake and obtaining a fluidized bed of the desired explosive charge by exposing the dewatered cake to at least one stream of gas; at least one stream of gas being injected, under the dewatered cake to impinge said dewatered cake, according to two consecutive modes and the gas having a humidity height below that of the dewatered cake and a dew point temperature higher than the injection temperature thereof; and stopping at least one stream of gas and recovering the explosive charge in dry, granular form.

Abstract: A method for obtaining solutions that contain 1,2,4-triazole-5-one (OTA) in concentrated sulphuric acid, includes using 3-amino-1,2,4-triazole (ATA) as a precursor of OTA. There is also provided a method for preparing 3-nitro-1,2,4-triazole-5-one (4) (ONTA) from the solutions.

Abstract: A method for obtaining the explosive charge in dry granular form as well as a device suitable for implementing the method. The method includes: filtering the suspension, by passing same through a static filter in order to obtain a cake containing the granular explosive charge agglomerated by residual liquid; dewatering the cake by subjecting the cake to pressurized gas; splitting the dewatered cake and obtaining a fluidized bed of the desired explosive charge by exposing the dewatered cake to at least one stream of gas; at least one stream of gas being injected, under the dewatered cake to impinge said dewatered cake, according to two consecutive modes and the gas having a humidity height below that of the dewatered cake and a dew point temperature higher than the injection temperature thereof; and stopping at least one stream of gas and recovering the explosive charge in dry, granular form.

Abstract: A munition (10) with variable explosive power comprises a body (12) extending in an axial direction and housing at least first and second explosive charges (31, 32), together with a firing device (16). According to the invention, the munition further comprises a selector (50, 50?) provided with a detonating portion (52) and adapted to move between at least first and second positions, the selector being configured so that its detonating portion couples the firing device (16) to the first explosive charge in said first position and to the second explosive charge in said second position, one of the first and second explosive charges (31, 32) not being coupled to the firing device (16) in at least one of the first and second positions.

Abstract: The invention provides a filler material for a munition, inluding an explosive charge, an inert charge and at least one pyrotechnic transmission unit adapted to transmit a remotely initiated detonation to said explosive charge. The invention also concerns a munition incorporating said filler material, said munition including a hollow elongate casing suitable for housing the explosive charge and the inert charge, and a firing device, at least a portion of the inert charge being interposed between the firing device and said explosive charge, and the pyrotechnic transmission unit being provided with a pyrotechnic extension and coupling the firing device to the explosive charge in order to prime detonation of the explosive charge under the action of the firing device.

Abstract: The present invention provides a process for obtaining a charge of hexanitrohexaazaisowurtzitane crystals having rounded morphology. It also provides said charge, the energetic material comprising it, and a process for manufacturing said material. Said process for obtaining said charge comprises: preparing a saturated solution of any polymorphic form of hexanitrohexaazaisowurtzitane in a mixture comprising both an organic solvent for said hexanitrohexaazaisowurtzitane and an organic nonsolvent for said hexanitrohexaazaisowurtzitane, said solvent being more volatile than said nonsolvent; seeding this saturated solution with a few hexanitrohexaazaisowurtzitane crystals; and then concentrating the seeded, saturated solution by at least partial evaporation of the solvent, said evaporation of the solvent being performed at a temperature of between 35° C. and 15° C.

Abstract: A munition (10) with variable explosive power comprises a body (12) extending in an axial direction and housing at least first and second explosive charges (31, 32), together with a firing device (16). According to the invention, the munition further comprises a selector (50, 50?) provided with a detonating portion (52) and adapted to move between at least first and second positions, the selector being configured so that its detonating portion couples the firing device (16) to the first explosive charge in said first position and to the second explosive charge in said second position, one of the first and second explosive charges (31, 32) not being coupled to the firing device (16) in at least one of the first and second positions.

Abstract: The present invention provides a process for obtaining a charge of hexanitrohexaazaisowurtzitane crystals having rounded morphology. It also provides said charge, the energetic material comprising it, and a process for manufacturing said material. Said process for obtaining said charge comprises: preparing a saturated solution of any polymorphic form of hexanitrohexaazaisowurtzitane in a mixture comprising both an organic solvent for said hexanitrohexaazaisowurtzitane and an organic nonsolvent for said hexanitrohexaazaisowurtzitane, said solvent being more volatile than said nonsolvent; seeding this saturated solution with a few hexanitrohexaazaisowurtzitane crystals; and then concentrating the seeded, saturated solution by at least partial evaporation of the solvent, said evaporation of the solvent being performed at a temperature of between 35° C. and 15° C.

Abstract: The present invention relates to a method for crystallizing ammonium dinitramide (ADN), through spontaneous nucleation and crystal growth, from a solution containing said ammonium dinitramide (AND) dissolved in a solvent. Said solvent characteristically has a viscosity greater than or equal to 0.25 Pa s (250 cP) when said spontaneous nucleation is implemented. The ADN crystals obtained by said method have a median shape factor of 1 to 1.5 and are perfectly suitable for placement in the composition of energy materials.

Abstract: The present invention provides: dinitropyrazole derivatives of formula (I) in which: R?NO2, NH2, NF2, NHOH, OH or NHNH2 and R??H when R?NH2, NF2, NHOH, OH or NHNH2 or R??H, NH2 or a linear or branched C1-C4 alkyl group, optionally substituted by at least one hydroxy and/or one fluoro group, when R?NO2; other than 4-amino-3,5-dinitropyrazole; and also the salts of said derivatives of formula (I) in which R??H; the preparation of said derivatives and of their salts; and energetic compositions comprising at least one of said derivatives and/or at least one salt of such a derivative.

Abstract: The present invention provides: dinitropyrazole derivatives of formula (I) in which: R?NO2, NH2, NF2, NHOH, OH or NHNH2 and R??H when R?NH2, NF2, NHOH, OH or NHNH2 or R??H, NH2 or a linear or branched C1-C4 alkyl group, optionally substituted by at least one hydroxy and/or one fluoro group, when R?NO2; other than 4-amino-3,5-dinitropyrazole; and also the salts of said derivatives of formula (I) in which R??H; the preparation of said derivatives and of their salts; and energetic compositions comprising at least one of said derivatives and/or at least one salt of such a derivative.

Abstract: A malleable solid explosive that is in the form of a solid block consisting, for at least 98% of its weight, of a pulverulent explosive charge and of a liquid chosen from polyol polymers of the group of polyisobutylene polyols, polybutadiene polyols, polyether polyols, polyester polyols and polysiloxane polyols, whose number-average molecular mass is between 500 and 10 000, and mixtures thereof.

Abstract: The present invention provides: dinitropyrazole derivatives of formula (I) in which: R?NO2, NH2, NF2, NHOH, OH or NHNH2 and R??H when R?NH2, NF2, NHOH, OH or NHNH2 or R??H, NH2 or a linear or branched C1-C4 alkyl group, optionally substituted by at least one hydroxy and/or one fluoro group, when R?NO2; other than 4-amino-3,5-dinitropyrazole; and also the salts of said derivatives of formula (I) in which R??H; the preparation of said derivatives and of their salts; and energetic compositions comprising at least one of said derivatives and/or at least one salt of such a derivative.

Abstract: The present invention relates to suspensions of hexanitrohexaazaisowurtzitane crystals in a liquid phase (said liquid phase is composed, to at least 85% by weight, of a nonsolvent for hexanitrohexaazaisowurtzitane, said nonsolvent consisting of at least one nonflammable hydrofluoroether, and includes from 0 to less than 15% by weight of an organic solvent for hexanitrohexaazaisowurtzitane, more volatile than said nonsolvent, chosen from the group consisting of esters, nitriles, ketones and their mixtures), the production of said suspensions and their use to manufacture pyrotechnic objects. The use of said at least one hydrofluoroether as nonsolvent is particularly appropriate.