US3634155A - Priming composition - Google Patents

Priming composition Download PDF

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Publication number
US3634155A
US3634155A US836159A US3634155DA US3634155A US 3634155 A US3634155 A US 3634155A US 836159 A US836159 A US 836159A US 3634155D A US3634155D A US 3634155DA US 3634155 A US3634155 A US 3634155A
Authority
US
United States
Prior art keywords
lead
mixture
cellulose
trinitroresorcinate
percent
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
Application number
US836159A
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English (en)
Inventor
Josef Prior
Aloys Florin
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Dynamit Nobel AG
Original Assignee
Dynamit Nobel AG
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 Dynamit Nobel AG filed Critical Dynamit Nobel AG
Application granted granted Critical
Publication of US3634155A publication Critical patent/US3634155A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C06—EXPLOSIVES; MATCHES
    • C06B—EXPLOSIVES OR THERMIC COMPOSITIONS; MANUFACTURE THEREOF; USE OF SINGLE SUBSTANCES AS EXPLOSIVES
    • C06B41/00—Compositions containing a nitrated metallo-organic compound
    • C06B41/02—Compositions containing a nitrated metallo-organic compound the compound containing lead
    • C06B41/08—Compositions containing a nitrated metallo-organic compound the compound containing lead with a metal azide or a metal fulminate

Definitions

  • PRlMllNG COMPGSITION This invention relates to explosive compositions. lt more particularly refers to a novel explosive composition and form useful as an initiator.
  • a mixture, as a priming composition, of lead azide and lead trinitroresorcinate granulated in the wet state with binders It is preferred that the ratio of lead trinitroresorcinate to lead azide is about 5:95 to 95:5 weight percent with about 0.1 to 0.5 weight percent binder referred to the total weight. Because of the high sensitiveness to percussion and shock of a mixture of lead azide and lead trinitroresorcinate, the prior art did not consider production of such a mixture in granulated form.
  • Suitable for use as binders are nitrocellulose, methyl-, ethylacetylor similar cellulose derivatives or alginates, guar flower and high polymers which are water-soluble or capable of swelling with water such as polyvinyl alcohols, polykylene glycols (ethers) or polyvinyl pyrrolidenes.
  • nitrocellulose with a nitrogen content of l2to 14 percent and acetone-soluble acetyl cellulose.
  • the lead trinitroresorcinate particle sizes can vary from coarse to fine. The distribution of components in the particles is better in fine particle sizes.
  • the lead azide can be added in difierent percentages, Le, 88 percent 90 percent, 92 percent, 94 percent, and 98 percent.
  • the granulating of the lead azide trinitroresorcinate mixtures can take place by precipitation of the binder from a solution (l) or by machine granulating or by hand.
  • the formed cake is filtered off by suction, washed with alcohol, and then dried at an air temperature of 40 to 50 C.
  • the dry product forms into readily flowable granules, which may be separated by sifting into the desired granular size fractions.
  • the priming force of this mixture is now only at 50 percent of the mixture of 70 percent lead azide and 30 percent lead trinitroresorcinate.
  • a further advantage of the priming composition in accordance with the invention is the fact that the same may be produced in large charges. Furthermore, the mixture which constitutes the initial primer is readily flowable. The impact and friction sensitivity is strongly diminished without having appreciably reduced the ignition sensitivity or priming limit.
  • Method for the production of explosive initiator compositions comprising free-flowing granules of about 5 to weight percent lead azide, about 5 to 95 weight percent lead trinitroresorcinate and a binder; which method comprises forming a fluid form mixture of lead azide, lead trinitroresorcinate, a cellulose ester and a solvent for said cellulose ester; adding a nonsolvent liquid to said mixture in an amount and at a temperature sufficient to precipitate said lead azide, said lead trinitroresorcinate and said cellulose ester from said fluid form mixture; removing substantially all of the liquid from said precipitate; and recovering free-flowing granules of lead azide and lead trinitroresorcinate in the proportions specified above which granules are bonded by said cellulose ester.
  • cellulose ester is a member selected from the group consisting of nitrocellulose, acetone soluble acetyl cellulose, methyl cellulose and ethyl cellulose.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Adhesives Or Adhesive Processes (AREA)
  • Polysaccharides And Polysaccharide Derivatives (AREA)
  • Air Bags (AREA)
US836159A 1968-06-29 1969-06-24 Priming composition Expired - Lifetime US3634155A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1771720A DE1771720B2 (de) 1968-06-29 1968-06-29 Initialsatz

Publications (1)

Publication Number Publication Date
US3634155A true US3634155A (en) 1972-01-11

Family

ID=5700961

Family Applications (1)

Application Number Title Priority Date Filing Date
US836159A Expired - Lifetime US3634155A (en) 1968-06-29 1969-06-24 Priming composition

Country Status (5)

Country Link
US (1) US3634155A (de)
DE (1) DE1771720B2 (de)
FR (1) FR2014445A1 (de)
GB (1) GB1252816A (de)
NO (1) NO125847B (de)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USRE28473E (en) * 1971-08-23 1975-07-08 Primary explosive compositions for explosive bonding or forming
US3895980A (en) * 1971-04-28 1975-07-22 Kretschmer & Co F G Coated lead azide compositions sensitive to flames but insensitive to friction
FR2478808A1 (fr) * 1980-03-21 1981-09-25 France Etat Module a retard pyrotechnique et son procede de chargement
FR2556338A1 (fr) * 1983-12-07 1985-06-14 France Etat Armement Procede de preparation d'explosifs par voie humide
US5557061A (en) * 1989-03-20 1996-09-17 Breed Automotive Technology, Inc. High temperature stable, low input energy primer/detonator
DE4012663A1 (de) * 1990-04-04 1998-05-07 Breed Automotive Tech Hochtemperaturstabile Zünd- oder Sprengkapsel mit geringer Auslöseenergie
CN104098416A (zh) * 2014-07-23 2014-10-15 安徽理工大学 一种含有dnt的复合起爆药
RU2826053C1 (ru) * 2023-10-18 2024-09-03 Акционерное общество "Муромский приборостроительный завод" Неоржавляющий ударный состав

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB156429A (en) * 1920-02-14 1921-01-13 Wilhelm Eschbach Process for the manufacture of initial explosive priming compositions
US2295104A (en) * 1939-06-29 1942-09-08 Western Cartridge Co Manufacture of normal lead trinitroresorcinate and double salts thereof
US2421778A (en) * 1943-12-24 1947-06-10 Olin Ind Inc Initiating explosives
US2464777A (en) * 1945-11-26 1949-03-15 Ici Ltd Lead azide detonators
US3291663A (en) * 1964-04-29 1966-12-13 Taylor George William Charles Lead styphnate containing methyl cellulose

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB156429A (en) * 1920-02-14 1921-01-13 Wilhelm Eschbach Process for the manufacture of initial explosive priming compositions
US2295104A (en) * 1939-06-29 1942-09-08 Western Cartridge Co Manufacture of normal lead trinitroresorcinate and double salts thereof
US2421778A (en) * 1943-12-24 1947-06-10 Olin Ind Inc Initiating explosives
US2464777A (en) * 1945-11-26 1949-03-15 Ici Ltd Lead azide detonators
US3291663A (en) * 1964-04-29 1966-12-13 Taylor George William Charles Lead styphnate containing methyl cellulose

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3895980A (en) * 1971-04-28 1975-07-22 Kretschmer & Co F G Coated lead azide compositions sensitive to flames but insensitive to friction
USRE28473E (en) * 1971-08-23 1975-07-08 Primary explosive compositions for explosive bonding or forming
FR2478808A1 (fr) * 1980-03-21 1981-09-25 France Etat Module a retard pyrotechnique et son procede de chargement
EP0036810A1 (de) * 1980-03-21 1981-09-30 ETAT-FRANCAIS représenté par le Délégué Général pour l' Armement Verfahren zum Füllen eines pyrotechnischen Verzögerungssatzes
FR2556338A1 (fr) * 1983-12-07 1985-06-14 France Etat Armement Procede de preparation d'explosifs par voie humide
US5557061A (en) * 1989-03-20 1996-09-17 Breed Automotive Technology, Inc. High temperature stable, low input energy primer/detonator
DE4012663A1 (de) * 1990-04-04 1998-05-07 Breed Automotive Tech Hochtemperaturstabile Zünd- oder Sprengkapsel mit geringer Auslöseenergie
DE4012663C2 (de) * 1990-04-04 2001-06-28 Breed Automotive Tech Zündeinleitungszusammensetzung
CN104098416A (zh) * 2014-07-23 2014-10-15 安徽理工大学 一种含有dnt的复合起爆药
RU2826053C1 (ru) * 2023-10-18 2024-09-03 Акционерное общество "Муромский приборостроительный завод" Неоржавляющий ударный состав

Also Published As

Publication number Publication date
GB1252816A (de) 1971-11-10
NO125847B (de) 1972-11-13
FR2014445A1 (de) 1970-04-17
DE1771720B2 (de) 1975-12-04
DE1771720A1 (de) 1972-02-03

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