EP1440958B1 - Lead-free nontoxic priming mix - Google Patents
Lead-free nontoxic priming mix Download PDFInfo
- Publication number
- EP1440958B1 EP1440958B1 EP04250243A EP04250243A EP1440958B1 EP 1440958 B1 EP1440958 B1 EP 1440958B1 EP 04250243 A EP04250243 A EP 04250243A EP 04250243 A EP04250243 A EP 04250243A EP 1440958 B1 EP1440958 B1 EP 1440958B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- lead
- free
- composition
- total weight
- priming mix
- 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.)
- Expired - Lifetime
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- 230000037452 priming Effects 0.000 title claims abstract description 39
- 231100000252 nontoxic Toxicity 0.000 title claims abstract description 29
- 230000003000 nontoxic effect Effects 0.000 title claims abstract description 29
- 239000000203 mixture Substances 0.000 claims abstract description 74
- 239000007800 oxidant agent Substances 0.000 claims abstract description 15
- ZVLHRIAZZXQKAV-UHFFFAOYSA-N 4,5-dinitro-1-oxido-2,1,3-benzoxadiazol-1-ium Chemical class [O-][N+](=O)C1=C([N+](=O)[O-])C=CC2=[N+]([O-])ON=C21 ZVLHRIAZZXQKAV-UHFFFAOYSA-N 0.000 claims abstract description 12
- FGIUAXJPYTZDNR-UHFFFAOYSA-N potassium nitrate Chemical group [K+].[O-][N+]([O-])=O FGIUAXJPYTZDNR-UHFFFAOYSA-N 0.000 claims description 16
- 150000004655 tetrazenes Chemical group 0.000 claims description 13
- 239000002245 particle Substances 0.000 claims description 11
- 239000011521 glass Substances 0.000 claims description 8
- 235000010333 potassium nitrate Nutrition 0.000 claims description 8
- 239000004323 potassium nitrate Substances 0.000 claims description 8
- FIOXWIFNZQDDFJ-UHFFFAOYSA-N 2,3-dinitro-1-benzofuran Chemical class C1=CC=C2C([N+]([O-])=O)=C([N+](=O)[O-])OC2=C1 FIOXWIFNZQDDFJ-UHFFFAOYSA-N 0.000 claims description 4
- 239000011591 potassium Substances 0.000 claims description 4
- 229910052700 potassium Inorganic materials 0.000 claims description 4
- XAEFZNCEHLXOMS-UHFFFAOYSA-M potassium benzoate Chemical compound [K+].[O-]C(=O)C1=CC=CC=C1 XAEFZNCEHLXOMS-UHFFFAOYSA-M 0.000 claims description 4
- -1 potassium dinitrobenzofuroxan salt Chemical class 0.000 claims description 4
- NHNBFGGVMKEFGY-UHFFFAOYSA-N nitrate group Chemical group [N+](=O)([O-])[O-] NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 claims 1
- IUKSYUOJRHDWRR-UHFFFAOYSA-N 2-diazonio-4,6-dinitrophenolate Chemical compound [O-]C1=C([N+]#N)C=C([N+]([O-])=O)C=C1[N+]([O-])=O IUKSYUOJRHDWRR-UHFFFAOYSA-N 0.000 description 12
- 239000002360 explosive Substances 0.000 description 11
- 238000012360 testing method Methods 0.000 description 11
- 239000008188 pellet Substances 0.000 description 5
- 239000003795 chemical substances by application Substances 0.000 description 3
- 238000010304 firing Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- QPLDLSVMHZLSFG-UHFFFAOYSA-N Copper oxide Chemical compound [Cu]=O QPLDLSVMHZLSFG-UHFFFAOYSA-N 0.000 description 2
- 238000013459 approach Methods 0.000 description 2
- IWOUKMZUPDVPGQ-UHFFFAOYSA-N barium nitrate Chemical compound [Ba+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O IWOUKMZUPDVPGQ-UHFFFAOYSA-N 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 2
- 239000005337 ground glass Chemical class 0.000 description 2
- NUJOXMJBOLGQSY-UHFFFAOYSA-N manganese dioxide Chemical compound O=[Mn]=O NUJOXMJBOLGQSY-UHFFFAOYSA-N 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000003380 propellant Substances 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- VWDWKYIASSYTQR-UHFFFAOYSA-N sodium nitrate Chemical compound [Na+].[O-][N+]([O-])=O VWDWKYIASSYTQR-UHFFFAOYSA-N 0.000 description 2
- DHEQXMRUPNDRPG-UHFFFAOYSA-N strontium nitrate Chemical compound [Sr+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O DHEQXMRUPNDRPG-UHFFFAOYSA-N 0.000 description 2
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical class [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910002651 NO3 Inorganic materials 0.000 description 1
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 1
- 239000003082 abrasive agent Substances 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 229910052796 boron Chemical class 0.000 description 1
- 159000000007 calcium salts Chemical class 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 229960004643 cupric oxide Drugs 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 159000000003 magnesium salts Chemical class 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 230000009972 noncorrosive effect Effects 0.000 description 1
- 159000000001 potassium salts Chemical class 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000002028 premature Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 235000010344 sodium nitrate Nutrition 0.000 description 1
- 239000004317 sodium nitrate Substances 0.000 description 1
- 159000000000 sodium salts Chemical class 0.000 description 1
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
Definitions
- the present invention is directed to priming mixes for explosives, and more particularly lead-free and non-toxic priming mixes
- a nontoxic, noncorrosive priming mix described in U.S. Pat. No. 4,675,059 is one such composition.
- This priming composition is specifically adapted to rim fire cartridges and contains diazodinitrophenol, also known as dinol or DDNP, manganese dioxide, tetrazene and glass.
- diazodinitrophenol also known as dinol or DDNP
- manganese dioxide manganese dioxide
- tetrazene and glass a nontoxic priming mixture
- Another example of a nontoxic priming mixture is disclosed in U.S. Pat No. 4,963,201, issued to Bjerke et al. This composition comprises dinol or potassium dinitrobenzofuroxan as the primary explosive, tetrazene as a secondary explosive, a nitrate ester fuel and strontium nitrate as the oxidizer.
- Dinol also known as diazodinitrophenol or DDNP
- DDNP diazodinitrophenol
- Dinol exhibit an inherent disadvantage called non-ideality of explosives. This phenomenon is a propagation failure which occurs when the diameter or the cross-section of the explosive becomes too small or too thin - generally smaller than a critical diameter or cross-section. Such effects become prominent in rimfire priming applications where the priming mix is, by necessity, spread thinly.
- U.S. Patent No. 5,353,707 to Duget discloses a priming charge made from 40-70% dinitrobenzofuran salt (also known as dinitrobenzofuroxane salt, and the potassium salt - "KDNBF"), 3-15% tetrazene, 10-30% cupric oxide, 5-25% pulverulent reducing agent, 0.5-20% of an inert abrasive powder and 0-5% of a binder.
- U.S. Patent No. 5,538,569 to Carter discloses a nontoxic priming composition comprising a dinitrobenzofuroxan salt, oxidizer, and a friction agent.
- a preferred set of components are potassium salts of dinitrobenzofuroxan salt, potassium nitrate, and ground glass and/or boron as a friction agent.
- tetrazene is explicitly excluded from this composition, and the friction agent comprises a maximum of 45 wt%.
- U.S. Patent No. 5,993,577 to Erickson et al. discloses a lead-free priming composition made from diazodinitrophenol (DDNP), a low percentage of tetrazene, and a high percentage of an abrasive such as ground glass.
- the present invention is directed to a lead-free, non-toxic priming composition, comprising: 20-40 wt% of a dinitrobenzofuroxan salt; 2-10 wt% of a sensitizer; 0-30 wt% of an oxidizer; and 48-70 wt% of an abrasive, wherein all weight percents are based on the total weight of said composition.
- the present invention is directed to a lead-free, non-toxic priming composition, comprising: 30-40 wt% of potassium dinitrobenzofuroxan salt; 3-8 wt% of tetrazene; 0-15 wt% potassium nitrate; and 50-60 wt% of glass particles having an average particle size of from 90 to 150 microns, wherein all weight percents are based on the total weight of said composition.
- a priming mix composition comprising dinitrobenzofuroxan salts, a sensitizer, an oxidizer, and a high weight percentage of abrasive.
- the present inventors have unexpectedly discovered that in using dinitrobenzofuroxan salts, the composition of the present invention provides a more "ideal" (in propagation sense) explosive than compositions using dinol or DDNP.
- the present invention is directed to a lead-free, non-toxic priming composition, comprising: 20-40 wt% of a dinitrobenzofuroxan salt; 2-10 wt% of a sensitizer; 0-30 wt% of an oxidizer; and 48-70 wt% of an abrasive wherein all weight percents are based on the total weight of said composition.
- a lead-free, non-toxic priming composition comprising: 20-40 wt% of a dinitrobenzofuroxan salt; 2-10 wt% of a sensitizer; 0-30 wt% of an oxidizer; and 48-70 wt% of an abrasive wherein all weight percents are based on the total weight of said composition.
- the dinitrobenzofuroxan salt may be any salt, including potassium salt, sodium salt, calcium salt, magnesium salt, and the like, with the potassium salt being preferred.
- the preferred amount of this component in the composition of the present invention ranges from about 20-40 wt%, and more preferably from about 30 to about 40 wt%, based on the total weight of the composition. A particularly preferred amount is 35 wt%.
- the sensitizer component of the present invention is preferably tetrazene.
- Preferred ranges of this component in the composition of the invention are from about 2 to about 10 wt%, and more preferably from about 3 to about 8 wt%, based on the total weight of the composition.
- a particularly preferred amount of tetrazene sensitizer is 5 wt%.
- the oxidizer component of the present invention includes any oxidizer known in the art such as sodium nitrate, potassium nitrate, barium nitrate, and the like. Potassium nitrate is particularly preferred. Useful amounts of the oxidizer component range from about 0 to about 30 wt%, and more preferably from about 0 to about 20 wt%, based on the total weight of the composition. About 3 wt% of potassium nitrate is preferred.
- the abrasive component of the present invention is preferably glass fines, although other abrasives common and known in the art may also be used.
- the abrasive component comprises from about 48 to about 70 wt%, and more preferably from about 50 to about 60 wt%, based on the total weight of the composition.
- a particularly preferred amount of glass abrasive is about 57 wt%.
- a preferred range of particle sizes for the abrasive component ranges from about 75 to about 150 micrometer, and more preferably from about 90 to about 150 micrometer.
- a particularly useful average size is about 110 micrometer. It is believed that coarser (e.g., larger) abrasive particle sizes provide larger interstitial spaces where larger aggregates of materials can form, thereby providing more focused energy generation.
- the relatively large proportion of abrasive component of the present invention is believed to provide a more rigid support matrix and provides more anvil points which improve the sensitivity of the composition of the invention.
- composition of the present invention is easily substituted for leaded priming mixtures, and can be processed using conventional techniques.
- composition of the invention is made using conventional techniques well-known in the art.
- the appropriate amounts of dinitrobenzofuroxan salt and tetrazene sensitizer are processed in water to minimize the chance of premature explosion.
- the dinitrobenzofuroxan salt and tetrazene are allowed to settle, and excess water is decanted off.
- the resulting paste is further processed by adding appropriate amounts of abrasive and, if desired, oxidizer.
- the paste is mixed while moisture is maintained within the paste to a level of approximately 10-30% for safety reasons.
- the processed paste is formed into pellets by pushing the paste into a block having a plurality of holes, each having a specified size and volume.
- the processed pellets may be isolated and installed into cartridges using procedures well known in the art.
- Control rounds used in the testing of the 22 caliber was a round primed with a standard leaded mix known as 22LRPAT purple.
- the control used in the testing of the 27 caliber was a round primed with a leaded mix known as 27SR-1 Red.
- the experimental round contained approximately 35 wt% potassium dinitrobenzofuroxan salt, approximately 5 wt% tetrazene, approximately 3 wt% potassium nitrate, and approximately 57 wt% glass fines, wherein the glass fines have an average particle size of approximately 120 micrometer.
- test barrel Prior to firing the control or experimental rounds, a test barrel was rigged with a pressure gauge or copper crusher to measure the pressure generated by each round. The test barrel was also rigged with a velocity screen at the muzzle to measure the velocity of the nail exiting the muzzle. Function and casualty tests were performed on each round by shooting it in commercial tools. The following tables show the results of ballistic testing performed with the rounds. In Tables 1 and 2, “sd” refers to the standard deviation of each firing, and “ev” refers to the extreme variation between firings (defined as the difference between the maximum value and minimum value in the data set).
Abstract
Description
- The present invention is directed to priming mixes for explosives, and more particularly lead-free and non-toxic priming mixes
- Various lead free priming mixtures for use in ammunition have been disclosed over the years. For example, a nontoxic, noncorrosive priming mix described in U.S. Pat. No. 4,675,059 is one such composition. This priming composition is specifically adapted to rim fire cartridges and contains diazodinitrophenol, also known as dinol or DDNP, manganese dioxide, tetrazene and glass. Another example of a nontoxic priming mixture is disclosed in U.S. Pat No. 4,963,201, issued to Bjerke et al. This composition comprises dinol or potassium dinitrobenzofuroxan as the primary explosive, tetrazene as a secondary explosive, a nitrate ester fuel and strontium nitrate as the oxidizer.
- Dinol (also known as diazodinitrophenol or DDNP), or mixtures based on dinol, exhibit an inherent disadvantage called non-ideality of explosives. This phenomenon is a propagation failure which occurs when the diameter or the cross-section of the explosive becomes too small or too thin - generally smaller than a critical diameter or cross-section. Such effects become prominent in rimfire priming applications where the priming mix is, by necessity, spread thinly.
- Various means have been proposed to mitigate the disadvantage caused by the non-ideality phenomenon, including changing the physical parameters of the explosive used in the ammunition by building up mix stock (to increase cross-section of the explosive), or by using highly consolidated propellant beds on top of the explosive mix. However, these approaches require using either a two-step mix charging process (e.g., one step to spin mix into the rim, and the other step to build the web), or a two-stage propellant charge with a highly consolidated first stage for keeping the propagation active. Unfortunately, both of these approaches are expensive and time-consuming.
- New priming mix compositions have also been proposed. For example, U.S. Patent No. 5,353,707 to Duget discloses a priming charge made from 40-70% dinitrobenzofuran salt (also known as dinitrobenzofuroxane salt, and the potassium salt - "KDNBF"), 3-15% tetrazene, 10-30% cupric oxide, 5-25% pulverulent reducing agent, 0.5-20% of an inert abrasive powder and 0-5% of a binder. U.S. Patent No. 5,538,569 to Carter discloses a nontoxic priming composition comprising a dinitrobenzofuroxan salt, oxidizer, and a friction agent. According to this disclosure, a preferred set of components are potassium salts of dinitrobenzofuroxan salt, potassium nitrate, and ground glass and/or boron as a friction agent. However, tetrazene is explicitly excluded from this composition, and the friction agent comprises a maximum of 45 wt%. U.S. Patent No. 5,993,577 to Erickson et al. discloses a lead-free priming composition made from diazodinitrophenol (DDNP), a low percentage of tetrazene, and a high percentage of an abrasive such as ground glass.
- What is needed in the art is a lead-free, non-toxic priming composition that addresses the phenomenon of non-ideality of explosives, yet is economical and easy to produce. The present invention is believed to be an answer to that need.
- In one aspect, the present invention is directed to a lead-free, non-toxic priming composition, comprising: 20-40 wt% of a dinitrobenzofuroxan salt; 2-10 wt% of a sensitizer; 0-30 wt% of an oxidizer; and 48-70 wt% of an abrasive, wherein all weight percents are based on the total weight of said composition.
- In another aspect, the present invention is directed to a lead-free, non-toxic priming composition, comprising: 30-40 wt% of potassium dinitrobenzofuroxan salt; 3-8 wt% of tetrazene; 0-15 wt% potassium nitrate; and 50-60 wt% of glass particles having an average particle size of from 90 to 150 microns, wherein all weight percents are based on the total weight of said composition.
- These and other aspects will become apparent upon reading the following detailed description of the invention.
- It has now been unexpectedly found by the inventors that the problem of non-ideality of explosives may be addressed by a priming mix composition comprising dinitrobenzofuroxan salts, a sensitizer, an oxidizer, and a high weight percentage of abrasive. The present inventors have unexpectedly discovered that in using dinitrobenzofuroxan salts, the composition of the present invention provides a more "ideal" (in propagation sense) explosive than compositions using dinol or DDNP.
- As indicated above, the present invention is directed to a lead-free, non-toxic priming composition, comprising: 20-40 wt% of a dinitrobenzofuroxan salt; 2-10 wt% of a sensitizer; 0-30 wt% of an oxidizer; and 48-70 wt% of an abrasive wherein all weight percents are based on the total weight of said composition. Each of these components are discussed in more detail below.
- The dinitrobenzofuroxan salt may be any salt, including potassium salt, sodium salt, calcium salt, magnesium salt, and the like, with the potassium salt being preferred. The preferred amount of this component in the composition of the present invention ranges from about 20-40 wt%, and more preferably from about 30 to about 40 wt%, based on the total weight of the composition. A particularly preferred amount is 35 wt%.
- The sensitizer component of the present invention is preferably tetrazene. Preferred ranges of this component in the composition of the invention are from about 2 to about 10 wt%, and more preferably from about 3 to about 8 wt%, based on the total weight of the composition. A particularly preferred amount of tetrazene sensitizer is 5 wt%.
- The oxidizer component of the present invention includes any oxidizer known in the art such as sodium nitrate, potassium nitrate, barium nitrate, and the like. Potassium nitrate is particularly preferred. Useful amounts of the oxidizer component range from about 0 to about 30 wt%, and more preferably from about 0 to about 20 wt%, based on the total weight of the composition. About 3 wt% of potassium nitrate is preferred.
- The abrasive component of the present invention is preferably glass fines, although other abrasives common and known in the art may also be used. Preferably, the abrasive component comprises from about 48 to about 70 wt%, and more preferably from about 50 to about 60 wt%, based on the total weight of the composition. A particularly preferred amount of glass abrasive is about 57 wt%. In addition, a preferred range of particle sizes for the abrasive component ranges from about 75 to about 150 micrometer, and more preferably from about 90 to about 150 micrometer. A particularly useful average size is about 110 micrometer. It is believed that coarser (e.g., larger) abrasive particle sizes provide larger interstitial spaces where larger aggregates of materials can form, thereby providing more focused energy generation.
- The relatively large proportion of abrasive component of the present invention is believed to provide a more rigid support matrix and provides more anvil points which improve the sensitivity of the composition of the invention.
- The composition of the present invention is easily substituted for leaded priming mixtures, and can be processed using conventional techniques.
- In general, the composition of the invention is made using conventional techniques well-known in the art.
- Typically, the appropriate amounts of dinitrobenzofuroxan salt and tetrazene sensitizer are processed in water to minimize the chance of premature explosion. Following mixing in water, the dinitrobenzofuroxan salt and tetrazene are allowed to settle, and excess water is decanted off. The resulting paste is further processed by adding appropriate amounts of abrasive and, if desired, oxidizer. The paste is mixed while moisture is maintained within the paste to a level of approximately 10-30% for safety reasons.
- The processed paste is formed into pellets by pushing the paste into a block having a plurality of holes, each having a specified size and volume. The processed pellets may be isolated and installed into cartridges using procedures well known in the art.
- Pressure and velocity testing of 22 and 27 caliber pellets was performed by shooting control and experimental rounds in a test barrel Control rounds used in the testing of the 22 caliber was a round primed with a standard leaded mix known as 22LRPAT purple. The control used in the testing of the 27 caliber was a round primed with a leaded mix known as 27SR-1 Red. The experimental round contained approximately 35 wt% potassium dinitrobenzofuroxan salt, approximately 5 wt% tetrazene, approximately 3 wt% potassium nitrate, and approximately 57 wt% glass fines, wherein the glass fines have an average particle size of approximately 120 micrometer.
- Prior to firing the control or experimental rounds, a test barrel was rigged with a pressure gauge or copper crusher to measure the pressure generated by each round. The test barrel was also rigged with a velocity screen at the muzzle to measure the velocity of the nail exiting the muzzle. Function and casualty tests were performed on each round by shooting it in commercial tools. The following tables show the results of ballistic testing performed with the rounds. In Tables 1 and 2, "sd" refers to the standard deviation of each firing, and "ev" refers to the extreme variation between firings (defined as the difference between the maximum value and minimum value in the data set).
Pressure and Velocity Tests for 22 Caliber Pellets N=20 Velocity (m/s (ft/s)) Pressure (108 Pa (100 psi)) Mean ev sd mean ev sd Control 209.7 (688) 9.8 (32) 2.4 (8) 3.48 (504) 0.50 (72) 0.15 (22) Experimental 208.2 (683) 12.2 (40) 2.7 (9) 3.29 (477) 0.61 (88) 0.20 (29) Pressure and Velocity Tests for 22 Caliber Pellets N=20 Velocity (m/s (ft/s)) Pressure (108 Pa (100 psi)) Mean ev sd mean ev sd Control 192 (630) 15.2 (50) 3.7 (12) 1.30 (188) 0.45 (65) 0.12 (18) Experimental 189.6 (622) 6.4 (21) 1.8 (6) 1.26 (182) 0.61 (88) 0.18 (26) (ev = extreme variation; sd = standard deviation) Function and Casualty Test Sample Tool Fastener N Results 92 J (22 cal) Control OMARK721 HD-150 50 OK 92 J (22 cal) Experimental OMARK 721 HD-150 50 OK 113 J (27 cal) Control Hilti DX450 NK -42 20 OK 113 J (27 cal) Experimental Hilti DX450 NK-42 20 OK - The results shown in the tables above indicate that the experimental rounds with the lead-free mixture perform substantially the same as the control rounds that are primed with a leaded mixture. These results confirm that the lead-free, non-toxic composition of the present invention can be easily substituted for rounds that are primed with leaded priming mixtures.
Claims (18)
- A lead-free, non-toxic priming composition, comprising:20-40 wt% of a dinitrobenzofuroxan salt;2-10 wt% of a sensitizer;0-30 wt% of an oxidizer, and48-70 wt% of an abrasive
- The lead-free, non-toxic priming mix of claim 1, wherein said dinitrobenzofuran salt is the potassium salt.
- The lead-free, non-toxic priming mix of claim 1, wherein said dinitrobenzofuran salt comprises from about 30 to about 40 wt%, based on the total weight of said composition.
- The lead-free, non-toxic priming mix of claim 1, wherein said dinitrobenzofuran salt comprises approximately 35 wt%, based on the total weight of said composition.
- The lead-free, non-toxic priming mix of claim 1, wherein said sensitizer is tetrazene.
- The lead-free, non-toxic priming mix of claim 1, wherein said sensitizer comprises from about 3 to about 8 wt%, based on the total weight of said composition.
- The lead-free, non-toxic priming mix of claim 1, wherein said sensitizer comprises approximately 5 wt%, based on the total weight of said composition.
- The lead-free, non-toxic priming mix of claim 1, wherein said oxidizer is a nitrate salt.
- The lead-free, non-toxic priming mix of claim 1, wherein said oxidizer is potassium nitrate.
- The lead-free, non-toxic priming mix of claim 1, wherein said oxidizer comprises from about 0 to about 15 wt%, based on the total weight of said composition.
- The lead-free, non-toxic priming mix of claim 1, wherein said oxidizer comprises approximately 3 wt%, based on the total weight of said composition.
- The lead-free, non-toxic priming mix of claim 1, wherein said abrasive is glass particles.
- The lead-free, non-toxic priming mix of claim 1, wherein said abrasive comprises from about 50 to about 60 wt%, based on the total weight of said composition.
- The lead-free, non-toxic priming mix of claim 1, wherein said abrasive comprises approximately 57 wt%, based on the total weight of said composition.
- The lead-free, non-toxic priming mix of claim 1, wherein said abrasive has an average particle size of from about 75 to about 150 micrometer.
- The lead-free, non-toxic priming mix of claim 1, wherein said abrasive has an average particle size of from about 90 to about 150 micrometer.
- The lead-free, non-toxic priming mix of claim 1, wherein said abrasive has an average particle size of approximatly 110 micrometer.
- The lead-free, non-toxic priming composition of claim 1, comprising:30-40 wt% of potassium dinitrobenzofuroxan salt;3-8 wt% of tetrazene;0-15 wt% potassium nitrate; and50-60 wt% of glass particles having an average particle size of from 90 to 150 microns,
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US746601 | 1996-11-13 | ||
US44218403P | 2003-01-23 | 2003-01-23 | |
US442184P | 2003-01-23 | ||
US10/746,601 US20040154713A1 (en) | 2003-01-23 | 2003-12-23 | Lead-free nontoxic priming mix |
Publications (2)
Publication Number | Publication Date |
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EP1440958A1 EP1440958A1 (en) | 2004-07-28 |
EP1440958B1 true EP1440958B1 (en) | 2005-09-14 |
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ID=32600304
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Application Number | Title | Priority Date | Filing Date |
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EP04250243A Expired - Lifetime EP1440958B1 (en) | 2003-01-23 | 2004-01-19 | Lead-free nontoxic priming mix |
Country Status (5)
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US (1) | US20040154713A1 (en) |
EP (1) | EP1440958B1 (en) |
AT (1) | ATE304519T1 (en) |
DE (1) | DE602004000086T2 (en) |
HK (1) | HK1064359A1 (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20050098248A1 (en) * | 2003-06-26 | 2005-05-12 | Vladimir Nikolaevich Khovonskov | Ammunition primer composition for small arms |
DE102006024511A1 (en) * | 2006-05-23 | 2007-11-29 | Ruag Ammotec Gmbh | ignition |
RU2669637C1 (en) * | 2017-08-11 | 2018-10-12 | Акционерное общество "Центральный научно-исследовательский институт точного машиностроения" (АО "ЦНИИТОЧМАШ") | Method for manufacture of suspension shock-igniting composition and method of equipping round ignition cartridges with such composition |
RU2674964C1 (en) * | 2018-03-12 | 2018-12-13 | Федеральное государственное бюджетное образовательное учреждение высшего образования "Российский химико-технологический университет имени Д.И. Менделеева" (РХТУ им. Д.И. Менделеева) | 1,1-dinitro-1-(4-nitro-3-(1h-tetrazol-1-yl)-1h-pyrazole-1-yl)methane potassium salt and method for preparation thereof |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3135636A (en) * | 1962-01-02 | 1964-06-02 | Atlas Chem Ind | Ignition composition containing an alkali metal salt of dinitrobenzfuroxan and a lacqer binder |
US3423259A (en) * | 1966-03-28 | 1969-01-21 | Olin Mathieson | Ammunition priming composition of dry particulate ingredients with karaya gum binder |
FR2693721B1 (en) * | 1992-07-20 | 1994-10-21 | Ncs Pyrotechnie Technologies | Priming charge with annular percussion and its manufacturing process. |
ATE177074T1 (en) * | 1994-08-27 | 1999-03-15 | Eley Ltd | INITIAL CHARGE |
US5610367A (en) * | 1995-10-06 | 1997-03-11 | Federal-Hoffman, Inc. | Non-toxic rim-fire primer |
US20010001970A1 (en) * | 1995-10-28 | 2001-05-31 | Rainer Hagel | Lead- and barium-free propellant charges |
DE19540278A1 (en) * | 1995-10-28 | 1997-04-30 | Dynamit Nobel Ag | Lead- and barium-free igniters |
US5993577A (en) * | 1998-09-04 | 1999-11-30 | Federal Cartridge Company | Lead-free, heavy-metal-free rim-fire priming composition dedicated for Ralph B. Lynn |
-
2003
- 2003-12-23 US US10/746,601 patent/US20040154713A1/en not_active Abandoned
-
2004
- 2004-01-19 DE DE602004000086T patent/DE602004000086T2/en not_active Expired - Lifetime
- 2004-01-19 EP EP04250243A patent/EP1440958B1/en not_active Expired - Lifetime
- 2004-01-19 AT AT04250243T patent/ATE304519T1/en active
- 2004-09-21 HK HK04107256A patent/HK1064359A1/en not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
US20040154713A1 (en) | 2004-08-12 |
EP1440958A1 (en) | 2004-07-28 |
ATE304519T1 (en) | 2005-09-15 |
DE602004000086D1 (en) | 2005-10-20 |
DE602004000086T2 (en) | 2006-06-14 |
HK1064359A1 (en) | 2005-01-28 |
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