EP4140973B1 - Suspension of explosive composition of pill fuse head for industrial electric detonators - Google Patents
Suspension of explosive composition of pill fuse head for industrial electric detonators Download PDFInfo
- Publication number
- EP4140973B1 EP4140973B1 EP22020161.0A EP22020161A EP4140973B1 EP 4140973 B1 EP4140973 B1 EP 4140973B1 EP 22020161 A EP22020161 A EP 22020161A EP 4140973 B1 EP4140973 B1 EP 4140973B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- portions
- pill
- suspension
- explosive composition
- electric
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 239000000203 mixture Substances 0.000 title claims description 31
- 239000002360 explosive Substances 0.000 title claims description 30
- 239000000725 suspension Substances 0.000 title claims description 23
- 239000006187 pill Substances 0.000 title description 30
- 239000003960 organic solvent Substances 0.000 claims description 9
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 claims description 8
- AXZAYXJCENRGIM-UHFFFAOYSA-J dipotassium;tetrabromoplatinum(2-) Chemical compound [K+].[K+].[Br-].[Br-].[Br-].[Br-].[Pt+2] AXZAYXJCENRGIM-UHFFFAOYSA-J 0.000 claims description 8
- 229910001487 potassium perchlorate Inorganic materials 0.000 claims description 8
- 229910052726 zirconium Inorganic materials 0.000 claims description 8
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 claims description 7
- 229910052796 boron Inorganic materials 0.000 claims description 7
- 229910021346 calcium silicide Inorganic materials 0.000 claims description 7
- XAEFZNCEHLXOMS-UHFFFAOYSA-M potassium benzoate Chemical compound [K+].[O-]C(=O)C1=CC=CC=C1 XAEFZNCEHLXOMS-UHFFFAOYSA-M 0.000 claims description 7
- 229920001973 fluoroelastomer Polymers 0.000 claims description 6
- DKPFZGUDAPQIHT-UHFFFAOYSA-N Butyl acetate Natural products CCCCOC(C)=O DKPFZGUDAPQIHT-UHFFFAOYSA-N 0.000 claims description 5
- 229940072049 amyl acetate Drugs 0.000 claims description 5
- PGMYKACGEOXYJE-UHFFFAOYSA-N anhydrous amyl acetate Natural products CCCCCOC(C)=O PGMYKACGEOXYJE-UHFFFAOYSA-N 0.000 claims description 5
- MNWFXJYAOYHMED-UHFFFAOYSA-M heptanoate Chemical group CCCCCCC([O-])=O MNWFXJYAOYHMED-UHFFFAOYSA-M 0.000 claims description 5
- FUZZWVXGSFPDMH-UHFFFAOYSA-N hexanoic acid Chemical compound CCCCCC(O)=O FUZZWVXGSFPDMH-UHFFFAOYSA-N 0.000 claims description 5
- 229940043232 butyl acetate Drugs 0.000 claims description 2
- YKYONYBAUNKHLG-UHFFFAOYSA-N n-Propyl acetate Natural products CCCOC(C)=O YKYONYBAUNKHLG-UHFFFAOYSA-N 0.000 claims description 2
- 229940090181 propyl acetate Drugs 0.000 claims description 2
- NQPDZGIKBAWPEJ-UHFFFAOYSA-N valeric acid Chemical compound CCCCC(O)=O NQPDZGIKBAWPEJ-UHFFFAOYSA-N 0.000 claims description 2
- 238000007598 dipping method Methods 0.000 description 11
- 238000005516 engineering process Methods 0.000 description 10
- 239000000020 Nitrocellulose Substances 0.000 description 8
- 229920001220 nitrocellulos Polymers 0.000 description 8
- 229910045601 alloy Inorganic materials 0.000 description 7
- 239000000956 alloy Substances 0.000 description 7
- 241000446313 Lamella Species 0.000 description 6
- VNNRSPGTAMTISX-UHFFFAOYSA-N chromium nickel Chemical compound [Cr].[Ni] VNNRSPGTAMTISX-UHFFFAOYSA-N 0.000 description 5
- 239000004922 lacquer Substances 0.000 description 5
- 229910052751 metal Inorganic materials 0.000 description 5
- 239000002184 metal Substances 0.000 description 5
- 229910001120 nichrome Inorganic materials 0.000 description 5
- 230000009466 transformation Effects 0.000 description 4
- 229910003336 CuNi Inorganic materials 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 239000011230 binding agent Substances 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000010981 drying operation Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000003517 fume Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000013049 sediment Substances 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C06—EXPLOSIVES; MATCHES
- C06C—DETONATING OR PRIMING DEVICES; FUSES; CHEMICAL LIGHTERS; PYROPHORIC COMPOSITIONS
- C06C7/00—Non-electric detonators; Blasting caps; Primers
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C06—EXPLOSIVES; MATCHES
- C06B—EXPLOSIVES OR THERMIC COMPOSITIONS; MANUFACTURE THEREOF; USE OF SINGLE SUBSTANCES AS EXPLOSIVES
- C06B29/00—Compositions containing an inorganic oxygen-halogen salt, e.g. chlorate, perchlorate
- C06B29/02—Compositions containing an inorganic oxygen-halogen salt, e.g. chlorate, perchlorate of an alkali metal
- C06B29/16—Compositions containing an inorganic oxygen-halogen salt, e.g. chlorate, perchlorate of an alkali metal with a nitrated organic compound
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
- F42B3/00—Blasting cartridges, i.e. case and explosive
- F42B3/10—Initiators therefor
- F42B3/12—Bridge initiators
- F42B3/128—Bridge initiators characterised by the composition of the pyrotechnic material
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42C—AMMUNITION FUZES; ARMING OR SAFETY MEANS THEREFOR
- F42C19/00—Details of fuzes
- F42C19/08—Primers; Detonators
- F42C19/12—Primers; Detonators electric
Definitions
- the invention concerns the suspension of explosive composition of pill fuse head for industrial electric detonators created by dipping technology on its skeleton formed by metal lamellas and a resistance wire.
- suspensions of explosive compositions in solutions of nitrocellulose or fluoroelastomer in an organic solvent are used for the technology of the production of electric pill fuse heads by dipping.
- Those suspensions contain an explosive based on a lead salt and other components based on lead and non-lead oxidizers, metal powders, and binders, such as mentioned nitrocellulose or fluoroelastomer.
- the dipping technology is based on simultaneous immersion of several thousand electric pill skeletons, formed by metal lamellas with a resistance wire, into a suspension of explosive composition, and thus the formation of electric pill fuse heads. These wet fuse heads are then dried out to remove the organic solvent, after which the fuse heads of the electric pills are provided with a lacquer layer of conventional lacquers to ensure mechanical and dimensional strength.
- suspensions of explosive composition must exhibit constancy of composition and sedimentation of the individual components must not occur.
- the explosive composition of the pill fuse heads after the organic solvents have been dried out, then coats the resistance wire, which is usually made of a NiCr alloy in a weight ratio of 80/20 and whose diameter ranges from 30 to 100 micrometres, or of a CuNi alloy containing 44% Ni, with a diameter of 170 micrometres.
- the explosive pill composition determines the electrical parameters of the electric pill with respect to the resistance wire, such as: safe current and ignition current.
- the electric pill thus formed can be used in an electric industrial detonator, where, after passing a predefined electrical impulse, the resistance wire of the electric pill is heated and subsequently the pill explosive composition is initiated, the burst of flame of which then transmits the heat burst to the pyrotechnic delay composition of the industrial electric detonator.
- the explosive composition must be sufficiently sensitive to the definably heated resistance wire of the electric pill to ignite it.
- the created burst of flame, formed by the explosive transformation of the individual components, then must not have an excessive pressure effect, but must have the calorific capacity to initiate the delay pyrotechnic composition of the electric detonator.
- CZ294317 discloses a dipping explosive mixture comprising potassium dinitrobenzofuroxanate (KDNBF), potassium perchlorate, zirconium, silica as filler and stabilizer and a solution of Viton B (fluoroelastomer binder) in butyl acetate.
- KDNBF potassium dinitrobenzofuroxanate
- Zrconium zirconium
- silica silica
- Viton B fluoroelastomer binder
- the organic solvent is amyl acetate, butyl acetate, propyl acetate, or isomers thereof.
- Such suspension of explosive composition has suitable rheological properties because its individual components do not sediment and it is technologically processable for multiple applications to the electric pill skeleton formed by metal lamellas with the resistance wire forming a bridge, where after the drying operation forms the electric pill fuse head.
- the listed formula of the suspension of explosive composition applied to the resistance wire of the electric pill then, after drying the organic solvent and providing the lacquer layer, ensures the required sensitivity of the electric pill to initiation when heating the resistance wire of varying material composition and diameter, and the formed fumes after its explosive transformation generate regular burst of flame and allow regular ignition of the pyrotechnic delay composition in the electric detonator.
- the concerned composition of the fuse head of the electric pill is harmless from the point of view of ecology because it does not contain any non-ecological components and does not create such by its explosive transformation.
- the explosive composition and its products after the explosive transformation are thus environmentally friendly.
- the mentioned explosive composition can also be used as a separate electric pill or in an electric igniter assembly also for use in fireworks.
- Fig. 1 shows a vertical front cross section of the electric pill
- Fig. 2 shows a vertical side cross section of this pill.
- the electric pill in Figs. 1 and 2 is formed by two metal lamellas 4 between which a resistance wire is arranged 3. Fixation of the lamellas 4 with the attached resistance wire 3 is made by a plastic clip 5 .
- the suspension of explosive composition 2 is applied to the resistance wire 3, or to the skeleton formed by endings of the lamellas 4 with the resistance wire 3, according to this technical solution and using the dipping technology. After drying out and removal of organic solvents, the explosive composition is provided with lacquer layer 1, in this case a nitrocellulose lacquer ensuring the mechanical strength of the electric pill fuse head thus formed.
- the suspension of the explosive composition 2 consists of 48 wt. portions of the potassium salt of dinitrobenzofuroxane, 25 wt. portions of potassium perchlorate, 9 wt. portions of zirconium, 9 wt. portions of boron, and 9 wt. portions of calcium silicide in a 1% solution of nitrocellulose in amyl acetate.
- This suspension was applied by the dipping technology to a skeleton with a resistance wire 3 made of NiCr (80/20) alloy with a wire diameter of 30 micrometres, in which case the subsequently formed electric pill fuse head exhibited the parameters of safe current 0.18A and ignition current 1A.
- the suspension of explosive composition 2 consists of 48 wt. portions of the potassium salt of dinitrobenzofuroxane, 25 wt. portions of potassium perchlorate, 9 wt. portions of zirconium, 9 wt. portions of boron and, 9 wt. portions of calcium silicide in a 3% solution of fluoroelastomer in butyl acetate.
- This suspension was applied by the dipping technology to a skeleton with a resistance wire 3 made of NiCr (80/20) alloy with the wire diameter of 55 micrometres, in which case the subsequently formed electric pill fuse head exhibited the parameters of safe current 0.45A and ignition current 1.5A.
- the suspension of explosive composition 2 consists of 55 wt. portions of the potassium salt of dinitrobenzofuroxane, 15 wt. portions of potassium perchlorate, 10 wt. portions of zirconium, 10 wt. portions of boron, and 10 wt. portions of calcium silicide in a 5% solution of nitrocellulose in amyl acetate.
- This suspension was applied by the dipping technology to a skeleton with a resistance wire 3 made of NiCr (80/20) alloy with the wire diameter of 45 micrometres, in which case the subsequently formed electric pill fuse head exhibited the parameters of safe current 0.25A and ignition current 1.1A.
- the suspension of explosive composition 2 consists of 40 wt. portions of the potassium salt of dinitrobenzofuroxane, 15 wt. portions of potassium perchlorate, 15 wt. portions of zirconium, 15 wt. portions of boron, and 15 wt. portions of calcium silicide in a 5% solution of nitrocellulose in amyl acetate.
- This suspension was applied by the dipping technology to a skeleton with a resistance wire 3 made of NiCr (80/20) alloy with the wire diameter of 100 micrometres, in which case the subsequently formed electric pill fuse head exhibited the parameters of safe current 1.2A and ignition current 3.5A.
- the suspension of explosive composition 2 consists of 55 wt. portions of the potassium salt of dinitrobenzofuroxane, 12 wt. portions of potassium perchlorate, 8 wt. portions of zirconium, 10 wt. portions of boron, and 15 wt. portions of calcium silicide in a 3% solution of nitrocellulose in butyl acetate.
- This suspension was applied by the dipping technology to a skeleton with a resistance wire 3 made of CuNi (44% of Ni) alloy with the wire diameter of 170 micrometres, in which case the subsequently formed electric pill fuse head exhibited the parameters of safe current 4A and ignition current 25A.
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Inorganic Chemistry (AREA)
- Air Bags (AREA)
- Dental Preparations (AREA)
Description
- The invention concerns the suspension of explosive composition of pill fuse head for industrial electric detonators created by dipping technology on its skeleton formed by metal lamellas and a resistance wire.
- At present, suspensions of explosive compositions in solutions of nitrocellulose or fluoroelastomer in an organic solvent are used for the technology of the production of electric pill fuse heads by dipping. Those suspensions contain an explosive based on a lead salt and other components based on lead and non-lead oxidizers, metal powders, and binders, such as mentioned nitrocellulose or fluoroelastomer.
- The dipping technology is based on simultaneous immersion of several thousand electric pill skeletons, formed by metal lamellas with a resistance wire, into a suspension of explosive composition, and thus the formation of electric pill fuse heads. These wet fuse heads are then dried out to remove the organic solvent, after which the fuse heads of the electric pills are provided with a lacquer layer of conventional lacquers to ensure mechanical and dimensional strength. In the dipping technology, suspensions of explosive composition must exhibit constancy of composition and sedimentation of the individual components must not occur.
- The explosive composition of the pill fuse heads, after the organic solvents have been dried out, then coats the resistance wire, which is usually made of a NiCr alloy in a weight ratio of 80/20 and whose diameter ranges from 30 to 100 micrometres, or of a CuNi alloy containing 44% Ni, with a diameter of 170 micrometres. The explosive pill composition then determines the electrical parameters of the electric pill with respect to the resistance wire, such as: safe current and ignition current.
- The electric pill thus formed can be used in an electric industrial detonator, where, after passing a predefined electrical impulse, the resistance wire of the electric pill is heated and subsequently the pill explosive composition is initiated, the burst of flame of which then transmits the heat burst to the pyrotechnic delay composition of the industrial electric detonator.
- Therefore, the explosive composition must be sufficiently sensitive to the definably heated resistance wire of the electric pill to ignite it. The created burst of flame, formed by the explosive transformation of the individual components, then must not have an excessive pressure effect, but must have the calorific capacity to initiate the delay pyrotechnic composition of the electric detonator.
- The above currently used formula of suspensions of the explosive composition of electric pill fuse heads is, however, unacceptable from the ecological point of view according to the current European legislation.
CZ294317 - The above shortcomings are eliminated by the suspension of explosive composition of pill fuse head for industrial electric detonators according to this invention, the essence of which is that it consists of 30 - 60 wt. portions of the potassium salt of dinitrobenzofuroxane, 15 - 35 wt. portions of potassium perchlorate, 5-20 wt. portions of zirconium, 5-20 wt. portions of boron, and 5-20 wt. portions of calcium silicide in 1 - 5% solution of nitrocellulose or fluoroelastomer in an organic solvent.
- For proper function, it is withal advantageous, if the organic solvent is amyl acetate, butyl acetate, propyl acetate, or isomers thereof.
- Such suspension of explosive composition has suitable rheological properties because its individual components do not sediment and it is technologically processable for multiple applications to the electric pill skeleton formed by metal lamellas with the resistance wire forming a bridge, where after the drying operation forms the electric pill fuse head.
- The listed formula of the suspension of explosive composition applied to the resistance wire of the electric pill then, after drying the organic solvent and providing the lacquer layer, ensures the required sensitivity of the electric pill to initiation when heating the resistance wire of varying material composition and diameter, and the formed fumes after its explosive transformation generate regular burst of flame and allow regular ignition of the pyrotechnic delay composition in the electric detonator.
- The concerned composition of the fuse head of the electric pill is harmless from the point of view of ecology because it does not contain any non-ecological components and does not create such by its explosive transformation. The explosive composition and its products after the explosive transformation are thus environmentally friendly.
- The mentioned explosive composition can also be used as a separate electric pill or in an electric igniter assembly also for use in fireworks.
- The invention will be further elucidated with the aid of the drawing, in which
Fig. 1 shows a vertical front cross section of the electric pill andFig. 2 shows a vertical side cross section of this pill. - The electric pill in
Figs. 1 and 2 is formed by twometal lamellas 4 between which a resistance wire is arranged 3. Fixation of thelamellas 4 with the attachedresistance wire 3 is made by aplastic clip 5. The suspension ofexplosive composition 2 is applied to theresistance wire 3, or to the skeleton formed by endings of thelamellas 4 with theresistance wire 3, according to this technical solution and using the dipping technology. After drying out and removal of organic solvents, the explosive composition is provided withlacquer layer 1, in this case a nitrocellulose lacquer ensuring the mechanical strength of the electric pill fuse head thus formed. - The suspension of the
explosive composition 2 consists of 48 wt. portions of the potassium salt of dinitrobenzofuroxane, 25 wt. portions of potassium perchlorate, 9 wt. portions of zirconium, 9 wt. portions of boron, and 9 wt. portions of calcium silicide in a 1% solution of nitrocellulose in amyl acetate. - This suspension was applied by the dipping technology to a skeleton with a
resistance wire 3 made of NiCr (80/20) alloy with a wire diameter of 30 micrometres, in which case the subsequently formed electric pill fuse head exhibited the parameters of safe current 0.18A and ignition current 1A. - The suspension of
explosive composition 2 consists of 48 wt. portions of the potassium salt of dinitrobenzofuroxane, 25 wt. portions of potassium perchlorate, 9 wt. portions of zirconium, 9 wt. portions of boron and, 9 wt. portions of calcium silicide in a 3% solution of fluoroelastomer in butyl acetate. - This suspension was applied by the dipping technology to a skeleton with a
resistance wire 3 made of NiCr (80/20) alloy with the wire diameter of 55 micrometres, in which case the subsequently formed electric pill fuse head exhibited the parameters of safe current 0.45A and ignition current 1.5A. - The suspension of
explosive composition 2 consists of 55 wt. portions of the potassium salt of dinitrobenzofuroxane, 15 wt. portions of potassium perchlorate, 10 wt. portions of zirconium, 10 wt. portions of boron, and 10 wt. portions of calcium silicide in a 5% solution of nitrocellulose in amyl acetate. - This suspension was applied by the dipping technology to a skeleton with a
resistance wire 3 made of NiCr (80/20) alloy with the wire diameter of 45 micrometres, in which case the subsequently formed electric pill fuse head exhibited the parameters of safe current 0.25A and ignition current 1.1A. - The suspension of
explosive composition 2 consists of 40 wt. portions of the potassium salt of dinitrobenzofuroxane, 15 wt. portions of potassium perchlorate, 15 wt. portions of zirconium, 15 wt. portions of boron, and 15 wt. portions of calcium silicide in a 5% solution of nitrocellulose in amyl acetate. - This suspension was applied by the dipping technology to a skeleton with a
resistance wire 3 made of NiCr (80/20) alloy with the wire diameter of 100 micrometres, in which case the subsequently formed electric pill fuse head exhibited the parameters of safe current 1.2A and ignition current 3.5A. - The suspension of
explosive composition 2 consists of 55 wt. portions of the potassium salt of dinitrobenzofuroxane, 12 wt. portions of potassium perchlorate, 8 wt. portions of zirconium, 10 wt. portions of boron, and 15 wt. portions of calcium silicide in a 3% solution of nitrocellulose in butyl acetate. - This suspension was applied by the dipping technology to a skeleton with a
resistance wire 3 made of CuNi (44% of Ni) alloy with the wire diameter of 170 micrometres, in which case the subsequently formed electric pill fuse head exhibited the parameters of safe current 4A and ignition current 25A.
Claims (2)
- The Suspension of Explosive Composition of Pill Fuse Head for Industrial Electric Detonators, characterized by consisting of 30 - 60 portions of the potassium salt of dinitrobenzofuroxane, 15 - 35 wt. portions of potassium perchlorate, 5 - 20 wt. portions of zirconium, 5 - 20 wt. portions of boron, and 5 - 20 wt. portions of calcium silicide in a 1 - 5% solution of fluoroelastomer in an organic solvent.
- The Suspension of Explosive Composition of Pill Fuse Head for Industrial Electric Detonators according to Claim 1, characterized by the fact that the organic solvent is amyl acetate, butyl acetate, propyl acetate, or isomers thereof.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CZ2021180A CZ2021180A3 (en) | 2021-04-12 | 2021-04-12 | Suspension of the explosive composition of the pill head for industrial electric detonators |
Publications (2)
Publication Number | Publication Date |
---|---|
EP4140973A1 EP4140973A1 (en) | 2023-03-01 |
EP4140973B1 true EP4140973B1 (en) | 2024-02-28 |
Family
ID=83601205
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP22020161.0A Active EP4140973B1 (en) | 2021-04-12 | 2022-04-08 | Suspension of explosive composition of pill fuse head for industrial electric detonators |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP4140973B1 (en) |
CZ (1) | CZ2021180A3 (en) |
PL (1) | PL4140973T3 (en) |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CZ294317B6 (en) * | 2001-06-08 | 2004-11-10 | Indet Safety Systems A. S. | Pyrotechnical composition for electrical initiators with reduced toxicity |
FR2833693B1 (en) * | 2001-12-14 | 2004-03-12 | Livbag Snc | PROCESS FOR MAKING AN ELECTRO-PYROTECHNICAL INITIATOR BY USE OF A WATER-BASED GLUE |
FR2861389B1 (en) * | 2003-10-22 | 2006-03-10 | Davey Bickford | LOW SENSITIVE PYROTECHNIC COMPOSITION WITH STATIC ELECTRICITY AND ULTRASOUND. |
US8784583B2 (en) * | 2004-01-23 | 2014-07-22 | Ra Brands, L.L.C. | Priming mixtures for small arms |
CZ35228U1 (en) * | 2021-04-12 | 2021-07-13 | Austin Detonator S.R.O. | Suspension of an explosive composition of the pilule for industrial electric detonators |
-
2021
- 2021-04-12 CZ CZ2021180A patent/CZ2021180A3/en unknown
-
2022
- 2022-04-08 PL PL22020161.0T patent/PL4140973T3/en unknown
- 2022-04-08 EP EP22020161.0A patent/EP4140973B1/en active Active
Also Published As
Publication number | Publication date |
---|---|
EP4140973A1 (en) | 2023-03-01 |
CZ2021180A3 (en) | 2022-10-19 |
PL4140973T3 (en) | 2024-05-06 |
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