WO1996038397A2 - Improved non-toxic primer - Google Patents

Improved non-toxic primer Download PDF

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Publication number
WO1996038397A2
WO1996038397A2 PCT/US1996/007757 US9607757W WO9638397A2 WO 1996038397 A2 WO1996038397 A2 WO 1996038397A2 US 9607757 W US9607757 W US 9607757W WO 9638397 A2 WO9638397 A2 WO 9638397A2
Authority
WO
WIPO (PCT)
Prior art keywords
weight
approximately
compounds
composition defined
glass
Prior art date
Application number
PCT/US1996/007757
Other languages
English (en)
French (fr)
Other versions
WO1996038397A3 (en
Inventor
Jack A. Erickson
Robert L. Kramer
John M. Hallis
Original Assignee
Federal-Hoffman, Inc., Doing Business As Federal Cartridge Co.
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Federal-Hoffman, Inc., Doing Business As Federal Cartridge Co. filed Critical Federal-Hoffman, Inc., Doing Business As Federal Cartridge Co.
Priority to MXPA97009105A priority Critical patent/MXPA97009105A/es
Priority to EP96932133A priority patent/EP0828698A2/en
Priority to AU71032/96A priority patent/AU7103296A/en
Publication of WO1996038397A2 publication Critical patent/WO1996038397A2/en
Publication of WO1996038397A3 publication Critical patent/WO1996038397A3/en
Priority to NO975389A priority patent/NO975389L/no

Links

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

  • Patent No. 3,707,411 issued to Gowlick er al; U.S. Patent
  • our invention utilizes two percussion-sensitive explosives in combination with a suitable propellant, calcium silicide, and a measure of finely divided glass particles.
  • a suitable propellant calcium silicide
  • a measure of finely divided glass particles 30-75% by weight of the mix is made up of the two primary explosives, DDNP and tetracene.
  • About 10-30% by weight is propellant and about 10-22% by weight of the mix is calcium silicide, and the balance is comprised of fine particles of glass, which amounts to about 3-15% by weight.
  • Our preferred mix is comprised of approximately 25% by weight of a suitable propellant, such as nitrocellulose and
  • our improved primer mix has new and definite attributes, in addition to the fact that it eliminates the use of metallic oxidizing compounds, which are toxic and hence undesirable, as well as hygroscopic oxidizers. 15 It also eliminates the need for the use of reducing an oxidizing agents. In addition, it substantially diminishes or eliminates the deposition of toxic or heavy metals on firearms, as well as the distribution of such metals into the atmosphere. Thus, like the primer mix disclosed and claimed in our above earlier patent 20 application, our improved non-toxic primer mix has both increased practical and environmental attributes.
  • a suitable propellant such as nitrocellulose alone, or Hercules Fines, which is a double-based propellant made up of nitrocellulose and nitroglycerine and is
  • suitable propellant it is intended to connote either nitrocellulose or Hercules Fines. These propellants serve the same purposes as outlined in our above prior application.
  • 30-75% by weight of the mix is comprised of these two explosives.
  • these two explosives are taken from a group consisting of a diazo, a triazole, and a tetrazole compound.
  • the balance of the mix has been changed.
  • substantial improvements in the mix can be obtained by reducing the proportion of the calcium silicide to 10-22% by weight, and by adding, in lieu thereof, 3-15% by weight of fine particles of glass as a frictionator substitute for the calcium silicide which has been withheld.
  • the particles of glass are preferably of relatively small size. We have discovered that, if we utilize only particles of glass which have passed through a U.S. #270 sieve, substantially improved results are obtained.
  • Such particles according to the catalog of Curtin Matheson Scientific, Incorporated, 7677 Equitable Drive, Eden Prairie, Minnesota, have openings of .0021".
  • the small size of these particles serve to control and stabilize the sensitivity of the primer. Their presence serves to supplement the frictionating function of the reduced proportion of the calcium silicide.
  • the tetracene and diazonitrophenol (DDNP) provide the needed primary explosive function and the propellant such as Hercules Fines functions as a fuel.
  • the calcium silicide functions as a fuel to send hot particles into the gun powder and as a frictionator, the latter function being supplemented by the fine particles of glass which functions as a friction point against which the explosive can be applied.
  • the more desirable range of the combined weights of the two primary explosives when utilized with the preferred proportions of calcium silicide and fine glass particles, is 30-55% by weight.
  • the preferred ranges of said percussion-sensitive compounds is 20-45% by weight of diazodinitrophenol and 10-30% by weight of tetracene.
  • these two primary explosives are selected from a group consisting of a diazo, a triazole, and a tetrazole compound.
  • a gum as a binder, in conjunction with each of the above mixes. While there may be other suitable gums, such as gum arabic, polyvinyl alcohol and gum karaya, we utilize tragacanth in amounts within the range of 0.8-2.0% by weight. We prefer to use this gum in proportions of 1.6% by weight.
  • suitable frictionators which may be utilized in lieu of calcium silicide.
  • suitable frictionators includes calcium silicide, aluminum oxide, ground coal, and boron. They should preferably be used in mixes having the same proportions and using the same particle size, as prescribed hereinbelow.
  • our newly prescribed proportions and ingredients in our primer mix provide definite advantages for, although the lack of hygroscopic compounds as an ingredient does diminish misfires, it does not provide the stability or diminish the number of misfires to the extent to which our above new primer composition accomplishes said purposes.
  • Our new mix provides substantially all the advantages of the non-toxic primer described and claimed in our above allowed application for patent and, in addition, greatly reduces the number of misfires and more effectively controls the sensitivity of the mix.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Paints Or Removers (AREA)
  • Glass Compositions (AREA)
PCT/US1996/007757 1995-05-26 1996-05-24 Improved non-toxic primer WO1996038397A2 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
MXPA97009105A MXPA97009105A (es) 1995-05-26 1996-05-24 Fulminante no toxico mejorado.
EP96932133A EP0828698A2 (en) 1995-05-26 1996-05-24 Improved non-toxic primer
AU71032/96A AU7103296A (en) 1995-05-26 1996-05-24 Improved non-toxic primer
NO975389A NO975389L (no) 1995-05-26 1997-11-24 Forbedret ikke-toksisk tennsats

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US08/451,559 1995-05-26
US08/451,559 US5547528A (en) 1995-05-26 1995-05-26 Non-toxic primer

Publications (2)

Publication Number Publication Date
WO1996038397A2 true WO1996038397A2 (en) 1996-12-05
WO1996038397A3 WO1996038397A3 (en) 1997-01-09

Family

ID=23792704

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1996/007757 WO1996038397A2 (en) 1995-05-26 1996-05-24 Improved non-toxic primer

Country Status (7)

Country Link
US (1) US5547528A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
EP (1) EP0828698A2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
AU (1) AU7103296A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
CA (1) CA2222065A1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
MX (1) MXPA97009105A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
NO (1) NO975389L (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
WO (1) WO1996038397A2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5670740A (en) * 1995-10-06 1997-09-23 Morton International, Inc. Heterogeneous gas generant charges
US5831208A (en) * 1996-12-13 1998-11-03 Federal Cartridge Company Lead-free centerfire primer with DDNP and barium nitrate oxidizer
RU2110505C1 (ru) * 1997-03-18 1998-05-10 Акционерное общество закрытого типа "Би-Вест Импорт - Русское отделение" Пиротехнический ударный состав для капсюлей-воспламенителей центрального боя к патронам стрелкового оружия
US6669627B1 (en) * 1999-07-09 2003-12-30 Cornell Research Foundation Inc. REM sleep augmentation with extra-ocular light
CZ288858B6 (cs) 1999-09-17 2001-09-12 Sellier & Bellot, A. S. Netoxická a nekorozivní zážehová slož
US6544363B1 (en) 2000-10-30 2003-04-08 Federal Cartridge Company Non-toxic, heavy-metal-free shotshell primer mix
US6878221B1 (en) 2003-01-30 2005-04-12 Olin Corporation Lead-free nontoxic explosive mix
US7857921B2 (en) * 2006-03-02 2010-12-28 Alliant Techsystems Inc. Nontoxic, noncorrosive phosphorus-based primer compositions
US8641842B2 (en) * 2011-08-31 2014-02-04 Alliant Techsystems Inc. Propellant compositions including stabilized red phosphorus, a method of forming same, and an ordnance element including the same
US8540828B2 (en) 2008-08-19 2013-09-24 Alliant Techsystems Inc. Nontoxic, noncorrosive phosphorus-based primer compositions and an ordnance element including the same
DE102006024511A1 (de) * 2006-05-23 2007-11-29 Ruag Ammotec Gmbh Anzündsatz
US20110011502A1 (en) * 2009-07-17 2011-01-20 Mei George C Priming mix

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3321343A (en) * 1966-03-28 1967-05-23 Olin Mathieson Priming composition containing carbon which exhibits conchoidal fracture
US3707411A (en) * 1969-10-24 1972-12-26 Dynamit Nobel Ag Primer composition for solid propellant charges
US3963544A (en) * 1975-09-04 1976-06-15 Olin Corporation Priming formulation for rim fire ammunition
FR2563277B1 (fr) * 1984-04-19 1986-06-27 Snecma Procede pour renover des joints-labyrinthes uses, en particulier sur des pieces de turbomachines, et outils pour mettre en oeuvre ce procede
US4608102A (en) * 1984-11-14 1986-08-26 Omark Industries, Inc. Primer composition
FR2628735B1 (fr) * 1988-03-15 1990-08-24 Ncs Pyrotechnie Technologies Charges d'amorcage a percussion et leur procede de fabrication
US5126199A (en) * 1988-11-02 1992-06-30 The Dow Chemical Company Maleic anhydride-grafted polyolefin fibers
US5167736A (en) * 1991-11-04 1992-12-01 Olin Corporation Nontoxic priming mix
US5388519A (en) * 1993-07-26 1995-02-14 Snc Industrial Technologies Inc. Low toxicity primer composition
US5417160A (en) * 1993-12-01 1995-05-23 Olin Corporation Lead-free priming mixture for percussion primer

Also Published As

Publication number Publication date
EP0828698A2 (en) 1998-03-18
NO975389L (no) 1998-01-22
NO975389D0 (no) 1997-11-24
MXPA97009105A (es) 2004-12-03
EP0828698A4 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1998-04-01
CA2222065A1 (en) 1996-12-05
AU7103296A (en) 1996-12-18
WO1996038397A3 (en) 1997-01-09
US5547528A (en) 1996-08-20

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