GB806568A - Initiating compositions for electric detonators and processes for the production thereof - Google Patents

Initiating compositions for electric detonators and processes for the production thereof

Info

Publication number
GB806568A
GB806568A GB13645/57A GB1364557A GB806568A GB 806568 A GB806568 A GB 806568A GB 13645/57 A GB13645/57 A GB 13645/57A GB 1364557 A GB1364557 A GB 1364557A GB 806568 A GB806568 A GB 806568A
Authority
GB
United Kingdom
Prior art keywords
lead
azide
chromate
initiating
lead azide
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
Application number
GB13645/57A
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
Publication of GB806568A publication Critical patent/GB806568A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C06—EXPLOSIVES; MATCHES
    • C06B—EXPLOSIVES OR THERMIC COMPOSITIONS; MANUFACTURE THEREOF; USE OF SINGLE SUBSTANCES AS EXPLOSIVES
    • C06B35/00—Compositions containing a metal azide
    • C—CHEMISTRY; METALLURGY
    • C06—EXPLOSIVES; MATCHES
    • C06B—EXPLOSIVES OR THERMIC COMPOSITIONS; MANUFACTURE THEREOF; USE OF SINGLE SUBSTANCES AS EXPLOSIVES
    • C06B21/00—Apparatus or methods for working-up explosives, e.g. forming, cutting, drying
    • C06B21/0083—Treatment of solid structures, e.g. for coating or impregnating with a modifier

Abstract

806,568. Initiating- composition for detonators. DYNAMIT - AKTIENGESELL - SCHAFT VORM. A. NOBEL & CO. April 29, 1957 [April 27, 1956], No. 13645/57. Classes 9(1) and 9(2) An initiating composition for an electric detonator comprises a lead azide mass the surface of which consists of lead chromate. Preferably the lead azide is a product of purity above 80 per cent and may contain a proportion of basic azide, and it is reacted with a water soluble chromate such as potassium, sodium or ammonium bichromate, thus forming an adherent coating of lead chromate on the surface of the lead azide. Alternatively the lead azide may be treated with a solution of the water soluble chromate at a.p.H. range of 1 to 5. In an example lead azide (92 per cent PbN 6 ) is reacted with chromic acid in water to give a lead chromate coated product.
GB13645/57A 1956-04-27 1957-04-29 Initiating compositions for electric detonators and processes for the production thereof Expired GB806568A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DED22853A DE1036735B (en) 1956-04-27 1956-04-27 Lead azide initial set with improved flame ignition sensitivity and process for its manufacture

Publications (1)

Publication Number Publication Date
GB806568A true GB806568A (en) 1958-12-31

Family

ID=7037604

Family Applications (1)

Application Number Title Priority Date Filing Date
GB13645/57A Expired GB806568A (en) 1956-04-27 1957-04-29 Initiating compositions for electric detonators and processes for the production thereof

Country Status (4)

Country Link
US (1) US2989389A (en)
DE (1) DE1036735B (en)
FR (1) FR1169835A (en)
GB (1) GB806568A (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE634281A (en) * 1962-06-28
US4179327A (en) * 1978-07-13 1979-12-18 Allied Chemical Corporation Process for coating pyrotechnic materials
FR2438821A1 (en) * 1978-10-13 1980-05-09 France Etat SAFETY HOT WIRE IGNITION DEVICE

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US527563A (en) * 1894-10-16 Eric a
DE310049C (en) *
DE358367C (en) * 1921-03-12 1922-09-09 Walter Friederich Dr Process for the manufacture of ignition kits
DE359426C (en) * 1921-03-12 1922-09-22 Walter Friederich Dr Process for the manufacture of ignition kits
DE365773C (en) * 1921-03-12 1922-12-21 Walter Friederich Dr Process for the manufacture of ignition kits
GB374060A (en) * 1930-07-07 1932-05-20 Wilhelm Eschbach Improvements in and relating to detonating caps
US2027825A (en) * 1931-10-07 1936-01-14 Peters Cartridge Company Primer for ammunition
US2157669A (en) * 1937-11-26 1939-05-09 Du Pont Priming mixtures

Also Published As

Publication number Publication date
FR1169835A (en) 1959-01-06
US2989389A (en) 1961-06-20
DE1036735B (en) 1958-08-14

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