Classifications

• • C—CHEMISTRY; METALLURGY
  • C06—EXPLOSIVES; MATCHES
  • C06B—EXPLOSIVES OR THERMIC COMPOSITIONS; MANUFACTURE THEREOF; USE OF SINGLE SUBSTANCES AS EXPLOSIVES
  • C06B23/00—Compositions characterised by non-explosive or non-thermic constituents
  • C06B23/005—Desensitisers, phlegmatisers

Definitions

• This invention relates to the use of soluble desensitizers for the desensitization of castable explosives prepared on a basis of aromatic nitrocompounds and nitramines and/ or nitric esters.
• this invention relates to the use of waxes comprising a mixture of polychloronaphthalenes obtained in the chlorination and refining of naphthalene. for the desensitization of castable explosives prepared on a basis of aromatic nitro compounds and nitramines and/ or nitric esters and/or powdered metals and/or known desensitizers.
• Nibrenwaches are soluble in aromatic nitro compounds and are known under the commercial name Nibrenwaches. (Literature source: Ullmanns Encyclopadie der Technischen Chemie, publishing house Urban & Schwarze'nberg, Kunststoff-Berlin, 1954, vol. 5, page 474.) Nibrenwachs here is a mixture of polychloronaphthalenes. The production of these mixtures of isomeric polychloronaphthalenes is mentioned, for example, in the US. Patent 1,111,289 and in the German Patent 548,260 (compare Ullmann, page 474).
• castable explosives prepared on a basis of aromatic nitro compounds and nitramines and/ or nitric esters can be desensitized by the addition of waxes thereto; for exacple, 1% wax is often added to Composition B (60 parts hexogen, 40 parts trinitrotoluene) and also to the Pentolite mixture (50 parts pentaerythritol tetranitrate and 50 parts trinitrotoluene). The latter wax is not soluble in molten TNT.
• emulsifying aids are often added, as for example, lecithin as an emulsifier and nitrocellulose as a stabilizer.
• waxes and the necessary accompanying emulsifying aids are frequently added to metalcontaining explosive mixtures, such as, for example, a mixture of
• metalcontaining explosive mixtures such as, for example, a mixture of
• waxes and the accompanying emulsifying aids are associated with disadvantages. Since wax, lecithin and nitrocellulose are natural substances or derivatives of natural substances, their characteristics can- 3,472,713 Patented Oct. 14, 1969 not always be precisely controlled and accordingly the formation of a stable emulsion is not always assured. Furthermore, the waxes used hitherto were characterized by a low density, so that the resultant density of the entire explosive mixture was lowered.
• Nibrenwachs when used according to the invention, acts as a better desensitizer than Montan wax. Montan wax, although it is a desensitizer against shock and impact, acted to reduce the time considerably for explosion to occur.
• EXAMPLE 2 In the case of explosive mixtures of TNT and aluminum powder, the following times were measured at 340 C. for flashin or explosion to take place.
• EXAMPLE 4 In the case of explosive mixtures of TNT, hexogen and powdered aluminum, the following times were measured at 235 C. for producing flashing or explosion. In addition, the following specific weights were determined:
• EXAMPLE 5 The following times were determined for explosive mixtures of tetryl and TNT (tetrytol) at 230 C. for producing flashing or explosion:
• An explosive composition comprising a fusible aromatic nitro compound selected from the group consisting of trinitrotoluene, 2,4,6 trinitrophenylmethylnitramine, and trinitrobenzene and a wax as desensitizer consisting of a mixture of polychloronaphthalenes obtained in the chlorination and refinement of naphthalene.
• An explosive composition according to claim 1 additionally containing at least one member selected from the group consisting of nitramines, nitric esters and powdered metals.
• An explosive composition according to claim 1 comprising 30 parts trinitrotoluene and 5 parts of a wax consisting of a mixture of polychloronaphthalenes obtained in the chlorination and refinement of naphthalene, having a softening point of 130 C.
• An explosive composition according to claim 1 comprising 30 parts trinitrotoluene, 33 parts powdered aluminum and 5 parts of a wax consisting of a mixture of polychloronaphthalenes obtained in the chlorination and refinement of naphthalene, having a softening point of 116 C.
• An explosive composition according to claim 1 comprising 39 parts trinitrotoluene, 60 parts cyclotrimethylenetrinitramine, and 1 part of a wax consisting of a mixture of polychloronaphthalenes obtained in the chlorination and refinement of naphthalene, having a softening point of 116 C.
• An explosive composition according to claim 1 comprising 30 parts trinitrotoluene, 40 parts cyclotrimethylenetrinitramine, 25 parts powdered aluminum, and 5 parts of a wax consisting of a mixture of polychloronaphthalenes obtained in the chlorination and refinement of naphthalene, having a softening point of 130 C.
• An explosive composition according to claim 1 comprising 69 parts, 2,4,6 trinitrophenylmethylnitramine, 30 parts trinitrotoluene and 1 part of a wax consisting of a mixture of polychloronaphthalenes obtained in the chlorination and refinement of naphthalene, having a softening point of 130 C.
• An explosive composition according to claim 1 comprising 50 parts trinitrotoluene, 49 parts pentaerythritol tetranitrate, and 1 part of a wax consisting of a mixture of polychloronaphthalenes obtained in the chlorination and refinement of naphthalene, having a softening point of 116 C. i
• An explosive composition according to claim 1 comprising 16 parts tetryl, 2,4,6 trinitrophenylmethylnitramine, 24 parts trinitrobenzene, 59 parts cyclotrimethylenetrinitramine, and 1 part of a Wax consisting of a mixture of polychloronaphthalenes obtained in the chlorination and refinement of naphthalene, having a softening point of 130 C.
• explosive components comprising a fusible aromatic nitro compound and mixtures thereof with at least one member of the group of nitramines, nitric esters and powdered metals.
• a method of desensitizing explosive compositions comprising fusible aromatic nitro compounds selected 5 6 References (Zited UNITED STATES PATENTS 2,982,641 5/1961 Dawson et al. 149-105 X 3,000,720 9/1961 Baer et al 149105 X CARL D. QUARFORTH, Primary Examiner S. I. LECHERT, Assistant Examiner.

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• Chemical & Material Sciences (AREA)
• Organic Chemistry (AREA)
• Developing Agents For Electrophotography (AREA)
• Compositions Of Macromolecular Compounds (AREA)
• Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

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Publications (1)

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Cited By (6)

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Citations (2)

• 1967
  • 1967-07-20 DE DE19671646277 patent/DE1646277A1/de active Pending
• 1968
  • 1968-07-04 GB GB32064/68A patent/GB1222148A/en not_active Expired
  • 1968-07-17 US US745357A patent/US3472713A/en not_active Expired - Lifetime
  • 1968-07-17 BE BE718195D patent/BE718195A/xx unknown
  • 1968-07-18 LU LU56531D patent/LU56531A1/xx unknown
  • 1968-07-18 FR FR1579715D patent/FR1579715A/fr not_active Expired
  • 1968-07-19 NL NL6810290A patent/NL6810290A/xx unknown

Patent Citations (2)

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