ES383380A1 - Process for restoring propellent charge powder - Google Patents

Process for restoring propellent charge powder

Info

Publication number
ES383380A1
ES383380A1 ES383380A ES383380A ES383380A1 ES 383380 A1 ES383380 A1 ES 383380A1 ES 383380 A ES383380 A ES 383380A ES 383380 A ES383380 A ES 383380A ES 383380 A1 ES383380 A1 ES 383380A1
Authority
ES
Spain
Prior art keywords
powder
propellent charge
restoring
charge powder
diphenylamine
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
ES383380A
Other languages
Spanish (es)
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.)
Etat Francais
Original Assignee
Etat Francais
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 Etat Francais filed Critical Etat Francais
Publication of ES383380A1 publication Critical patent/ES383380A1/en
Expired legal-status Critical Current

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08JWORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J11/00Recovery or working-up of waste materials
    • C08J11/04Recovery or working-up of waste materials of polymers
    • C08J11/06Recovery or working-up of waste materials of polymers without chemical reactions
    • C08J11/08Recovery or working-up of waste materials of polymers without chemical reactions using selective solvents for polymer components
    • CCHEMISTRY; METALLURGY
    • C06EXPLOSIVES; MATCHES
    • C06BEXPLOSIVES OR THERMIC COMPOSITIONS; MANUFACTURE THEREOF; USE OF SINGLE SUBSTANCES AS EXPLOSIVES
    • C06B21/00Apparatus or methods for working-up explosives, e.g. forming, cutting, drying
    • C06B21/0091Elimination of undesirable or temporary components of an intermediate or finished product, e.g. making porous or low density products, purifying, stabilising, drying; Deactivating; Reclaiming
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08JWORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2301/00Characterised by the use of cellulose, modified cellulose or cellulose derivatives
    • C08J2301/08Cellulose derivatives
    • C08J2301/16Esters of inorganic acids
    • C08J2301/18Cellulose nitrate
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02WCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00Technologies for solid waste management
    • Y02W30/50Reuse, recycling or recovery technologies
    • Y02W30/62Plastics recycling; Rubber recycling

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Carbon And Carbon Compounds (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Working-Up Tar And Pitch (AREA)
  • Extraction Or Liquid Replacement (AREA)

Abstract

The calorimetric potential of an old propellent charge powder containing nitrocellulose is increased by extracting the powder with methylene chloride. For example, dinitrotoluene, dibutyl phthalate, and diphenylamine are removed from a single base powder by grinding in a stream of water and then extracting with the solvent. In another example a powder containing nitrocellulose, camphor, diphenylamine, potassium sulphate, and graphite is first treated with alcohol to remove the graphite. Extraction may be carried out at about 35 C. either batchwise or continuously. The treated powder may be used in the manufacture of sporting powders.
ES383380A 1969-10-14 1970-09-04 Process for restoring propellent charge powder Expired ES383380A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR6935123A FR2063402A5 (en) 1969-10-14 1969-10-14

Publications (1)

Publication Number Publication Date
ES383380A1 true ES383380A1 (en) 1973-01-16

Family

ID=9041519

Family Applications (1)

Application Number Title Priority Date Filing Date
ES383380A Expired ES383380A1 (en) 1969-10-14 1970-09-04 Process for restoring propellent charge powder

Country Status (5)

Country Link
BE (1) BE757442A (en)
DE (1) DE2050375A1 (en)
ES (1) ES383380A1 (en)
FR (1) FR2063402A5 (en)
GB (1) GB1262831A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2264352A1 (en) * 2004-10-22 2006-12-16 Ecopiro, S.L. Procedure is for recycling signalling equipment whose useful life is ended or which have deteriorated, as used in pyrotechnics for life-saving at sea and/or on land

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4477297A (en) * 1983-02-28 1984-10-16 Hercules Incorporated Manufacture of gel free nitrocellulose lacquers
DE4123225C1 (en) * 1991-07-11 1992-11-05 Mechanische Werkstaetten Koenigswartha Gmbh, O-8613 Koenigswartha, De
DE4230695C1 (en) * 1992-09-14 1994-04-21 Eilenburger Chemie Werke Ag Process for isolating cellulose nitrate from non-graphitized monobasic propellant powders, the cellulose nitrate obtainable by the process and its use
WO1994006853A1 (en) * 1992-09-14 1994-03-31 Eilenburger Chemie Werke Aktiengesellschaft Process for isolating cellulose nitrate from non-graphited monobasic propellant powders
DE19818337C1 (en) * 1998-04-23 1999-11-18 Buck Werke Gmbh & Co Kg Pyrotechnic active mass with ignition and combustion accelerator
CN102230860B (en) * 2011-06-20 2013-01-02 西安近代化学研究所 Accelerated solvent extraction pretreatment method of gunpowder and explosive samples
FI3642175T3 (en) * 2017-06-23 2024-06-04 Knds Ammo Italy S P A Composition for single-base propelling powder for ammunition and ammunition provided with such composition

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2264352A1 (en) * 2004-10-22 2006-12-16 Ecopiro, S.L. Procedure is for recycling signalling equipment whose useful life is ended or which have deteriorated, as used in pyrotechnics for life-saving at sea and/or on land

Also Published As

Publication number Publication date
BE757442A (en) 1971-03-16
FR2063402A5 (en) 1971-07-09
GB1262831A (en) 1972-02-09
DE2050375A1 (en) 1971-04-22

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