Classifications

• • C—CHEMISTRY; METALLURGY
  • C06—EXPLOSIVES; MATCHES
  • C06B—EXPLOSIVES OR THERMIC COMPOSITIONS; MANUFACTURE THEREOF; USE OF SINGLE SUBSTANCES AS EXPLOSIVES
  • C06B25/00—Compositions containing a nitrated organic compound
  • C06B25/34—Compositions containing a nitrated organic compound the compound being a nitrated acyclic, alicyclic or heterocyclic amine
• • C—CHEMISTRY; METALLURGY
  • C06—EXPLOSIVES; MATCHES
  • C06B—EXPLOSIVES OR THERMIC COMPOSITIONS; MANUFACTURE THEREOF; USE OF SINGLE SUBSTANCES AS EXPLOSIVES
  • C06B25/00—Compositions containing a nitrated organic compound
  • C06B25/04—Compositions containing a nitrated organic compound the nitrated compound being an aromatic
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10S149/00—Explosive and thermic compositions or charges
  • Y10S149/11—Particle size of a component
  • Y10S149/111—Nitrated organic compound

Definitions

• a fusible explosive composition comprises 4090% by weight of a crystalline explosive with a high detonation velocity and 60-10% by weight of 2,4,6- trinitrotoluene, the crystalline explosive with a high detonation velocity consisting of 10-50% by weight of octogen, that is cyclotetramethylene-tetranitroamine and the remainder being hexogen, that is cyclotrimethylene-trinitroamine.
• octogen causes a decrease in the melt viscosity and a decrease of deterioration, that is the increase in viscosity during successive fusions.
• the crystalline hexogen is generally allowed to sediment in the liquid T N T and the bottom part of the hexolite thus produced is used, this part having the highest hexogen content.
• One of the processes used hitherto to increase the proportion of hexogen in the hexolite consists of using simultaneously several different particle sizes of hexogen, that is large, medium and fine particles, so that the fine grains fill the interstices which exist between the grains of larger particle size.
• the following improvements are thus obtained: (i) an increase in the performance of the ammunition due to the increase in the proportion of hexogen, whilst it remains easy to cast the mixture and the final charge still remains homogeneous, (ii) there is less need to use special processes, such as sedimentation whic li increa s e the density of the more powerful explosive in the lower layers, the
• hexogens produced by mixing a grade containing more than 60% by weight of particles of size greater than 500 microns, withh a grade containing at least 80% of particles of size less than 300 microns, have been used.
• Hexogen mixtures of large particles of 315-800 microns and of fine particles of maximum size less than 200 microns have also been proposed.
• a 60/40 mixture by weight of these two hexogens in a 70/30 hexolite (70% by weight of hexogen and 30% by weight of T N T enables a product to be obtained which has a viscosity of 9 seconds, measured on an EFFLUX viscometer at 85 C, and a density of 1.75, in the lower half of the charge obtained after casting in vacuo and sedimentation.
• the viscosity of a 60/20/20 mixture of such fractions with T N T in the ratio /25 (75% of hexogen and 25% of T N T, measured on an EFFLUX viscometer at C, is l6 to 24 seconds.
• a fusible explosive composition which comprises fro 40 to by weight of crystalline explosive was amgfirretbsarrda veraaiyafiarransma 10%by weight of T N T, from 10 to 50% by weight of the crystalline explosive with a high detonation velocity being octogen and the remainder thereof being hexogen.
• the particle size of the octogen is preferably the same as that of the fine fraction of the hexogen, that is preferably between 0 and 300 microns, and the octogen preferably replaces all or part of the fine fraction of the hexogen.
• the preferred proportion of octogen is from 15 to 25% by weight of the hexogen and octogen taken together.
• the hexogen and the octogen incorporated into the fused T N T may have been pre-coated with T N T in order to reduce its sensitivity.
• Such crystals which we shall call hexo-octo, are produced, in particular, during the manufacture of octogen from hexamethylene-tetraamine and nitric acid.
• Experiments 1-2, 3-4, 5-6 and 7-8 respectively, it will be seen that in every case, the addition of octogen greatly reduced the increase in viscosity during re-fusions.
• Experiment 9 shows the use of octogen having a particle size of 100-200 microns.
• the octogen used had a particle size of 100-200 microns.
• the octogen used has a particle size of 100-200 microns.
• composition according to claim 1 which comprises a co-crystallized mixture of cyclotrimethylene-trinitroamine and cyclotetramethylenetetranitroamine in a weight ratio of from 60/40 to 85/ l 5.
• a process for molding an explosive composition which comprises fusing at about 85 C a composition explosive with a high detonation velocity and from 60 to 10% by weight of 2,4,6-trinitrotoluene, from 10% to 50% by weight of said crystalline explosive being cyclotetramethylene-tetranitroamine and the remainder being cyclotrimethylene-trinitroamine, casting said fused composition in to t he desired shape, rem ov i n ga portion of the cast material, repeating said steps of fusion and casting, each subsequent fusion being carried out at about 90 C.
• composition according to claim 1 which comprises 27% of 2,4,6-trinitrotoluene and 73% of said crystalline explosive wherein 10% by weight thereof is cyclotetramethylene-tetranitroamine.
• composition according to claim 1 which comprises 25% of 2,4,6-trinitrotoluene and 75% of said crystalline explosive wherein 15-20% by weight is cyclotetramethylene-tetranitroamine.

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• Chemical & Material Sciences (AREA)
• Organic Chemistry (AREA)
• Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
• Paints Or Removers (AREA)
• Solid-Phase Diffusion Into Metallic Material Surfaces (AREA)
• Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
• Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)

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• 0
  • BE BE795740D patent/BE795740A/xx not_active IP Right Cessation
• 1972
  • 1972-02-21 FR FR7205726A patent/FR2182599B1/fr not_active Expired
• 1973
  • 1973-02-06 CH CH168073A patent/CH566945A5/xx not_active IP Right Cessation
  • 1973-02-09 GB GB652273A patent/GB1365653A/en not_active Expired
  • 1973-02-12 US US00331496A patent/US3785889A/en not_active Expired - Lifetime
  • 1973-02-14 ES ES411586A patent/ES411586A1/es not_active Expired
  • 1973-02-19 DE DE2308154A patent/DE2308154C3/de not_active Expired
  • 1973-02-19 SE SE7302295A patent/SE399415C/xx unknown
  • 1973-02-20 NL NL7302313.A patent/NL161118C/xx not_active IP Right Cessation
  • 1973-02-20 NO NO680/73A patent/NO131982C/no unknown
  • 1973-02-20 IT IT67420/73A patent/IT984383B/it active
  • 1973-02-21 CA CA164,316A patent/CA1006357A/en not_active Expired

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