GB893499A - Nitrocelluose particles - Google Patents

Nitrocelluose particles

Info

Publication number
GB893499A
GB893499A GB1675459A GB1675459A GB893499A GB 893499 A GB893499 A GB 893499A GB 1675459 A GB1675459 A GB 1675459A GB 1675459 A GB1675459 A GB 1675459A GB 893499 A GB893499 A GB 893499A
Authority
GB
United Kingdom
Prior art keywords
parts
nitrocellulose
weight
slurry
ethyl acetate
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
GB1675459A
Inventor
John Joseph O'neill
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.)
Olin Corp
Original Assignee
Olin Corp
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 Olin Corp filed Critical Olin Corp
Priority to GB1675459A priority Critical patent/GB893499A/en
Publication of GB893499A publication Critical patent/GB893499A/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
    • C06B21/00—Apparatus or methods for working-up explosives, e.g. forming, cutting, drying
    • C06B21/0033—Shaping the mixture
    • C06B21/0066—Shaping the mixture by granulation, e.g. flaking

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Processes Of Treating Macromolecular Substances (AREA)
  • Polysaccharides And Polysaccharide Derivatives (AREA)

Abstract

Substantially globular but only partly gelatinized particles of nitrocellulose having a diameter of not more than about 0,012 inch are formed by suspending nitrocellulose fibres in an aqueous medium in the ratio of about 1 part by weight of nitrocellulose to 10-17 parts by weight of aqueous medium, coating the fibres with a protective colloid, adding about 1,6 parts by weight of ethyl acetate for each part by weight of nitrocellulose, thereafter adding ethyl acetate to the slurry at a rate not greater than about 0,25 part by weight per 100 parts by weight of nitrocellulose per second while maintaining the ethyl acetate to nitrocellulose ratio not greater than about 3:1, agitating the slurry until the fibres have assumed a globular form without complete dissolution of the nitrocellulose, and removing the solvent from the globular particles. The protective colloid may be gum arabic or an animal glue. In the example, 100 parts by weight of fibrous nitrated cotton linters having a nitrogen content of 12,6% are slurried in 1500 parts of-water and the slurry is agitated with 50 parts of gum arabic. One part of dinitro diphenylamine is added, the slurry is heated to 65 DEG -68 DEG F. and 160 parts by weight of ethyl acetate are uniformly dispersed in the slurry. A total of 140 further parts of ethyl acetate is added at a rate of 0,25 parts per second and agitation is continued until the particles assume a globular shape. A solution of 90 parts of sodium sulphate in 300 parts of water is uniformly mixed with the slurry to aid the formation of dense non-porous grains, and the slurry is heated to and maintained at the boiling point until all the solvent has been removed from the globules. Globular nitrocellulose grains produced as described above are suitable for use in moulding large propellant grains and other articles. U.S.A. Specifications 2,027,114 and 2,160,626 are referred to.
GB1675459A 1959-08-15 1959-08-15 Nitrocelluose particles Expired GB893499A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1675459A GB893499A (en) 1959-08-15 1959-08-15 Nitrocelluose particles

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1675459A GB893499A (en) 1959-08-15 1959-08-15 Nitrocelluose particles

Publications (1)

Publication Number Publication Date
GB893499A true GB893499A (en) 1962-04-11

Family

ID=10083046

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1675459A Expired GB893499A (en) 1959-08-15 1959-08-15 Nitrocelluose particles

Country Status (1)

Country Link
GB (1) GB893499A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115259977A (en) * 2021-04-30 2022-11-01 南京理工大学 Preparation method of loose-structure nitrocotton base powder for environment-friendly fireworks
CN115819163A (en) * 2021-02-09 2023-03-21 北京理工大学 Preparation method of high-detonation-heat-type range-extending safe and environment-friendly firework propellant

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115819163A (en) * 2021-02-09 2023-03-21 北京理工大学 Preparation method of high-detonation-heat-type range-extending safe and environment-friendly firework propellant
CN115259977A (en) * 2021-04-30 2022-11-01 南京理工大学 Preparation method of loose-structure nitrocotton base powder for environment-friendly fireworks
CN115259977B (en) * 2021-04-30 2023-09-05 南京理工大学 Preparation method of loose-structure nitrocotton base powder for environment-friendly fireworks

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