GB1137653A - Process for densifying nitrocellulose - Google Patents

Process for densifying nitrocellulose

Info

Publication number
GB1137653A
GB1137653A GB162867A GB162867A GB1137653A GB 1137653 A GB1137653 A GB 1137653A GB 162867 A GB162867 A GB 162867A GB 162867 A GB162867 A GB 162867A GB 1137653 A GB1137653 A GB 1137653A
Authority
GB
United Kingdom
Prior art keywords
nitrocellulose
agitation
slurry
solvent
particles
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
GB162867A
Inventor
John James Sapiego
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.)
Hercules LLC
Original Assignee
Hercules LLC
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 Hercules LLC filed Critical Hercules LLC
Priority to GB162867A priority Critical patent/GB1137653A/en
Publication of GB1137653A publication Critical patent/GB1137653A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08B—POLYSACCHARIDES; DERIVATIVES THEREOF
    • C08B5/00—Preparation of cellulose esters of inorganic acids, e.g. phosphates
    • C08B5/02—Cellulose nitrate, i.e. nitrocellulose
    • C08B5/04—Post-esterification treatments, e.g. densification of powders, including purification

Landscapes

  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Biochemistry (AREA)
  • Materials Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Paper (AREA)
  • Polysaccharides And Polysaccharide Derivatives (AREA)

Abstract

1,137,653. Densified particulate nitrocellulose. HERCULES Inc. 11 Jan., 1967, No. 1628/67. Heading C3A. Densified, finely-particulate nitrocellulose is made by (a) forming a slurry substantially free of fibre aggregates by agitation of fibrous nitrocellulose which is substantially water-free in a mixture of a hydrocarbon diluent and an organic nitrocellulose solvent which is soluble in the diluent to the extent of at least 2À5% by weight, said mixture being capable of softening but not dissolving the fibres, (b) subjecting the slurry to shear agitation whereby the fibres are softened and swollen and break down into particles, (c) initiating hardening of the particles by diluting the slurry with a hydrocarbon diluent while continuing the shear agitation, and (d) removing substantially all of the solvent by distillation in the presence of excess hydrocarbon diluent to complete the densification and hardening. In one embodiment high shear agitation is used to produce particles in the size range 15-150Á and a density of 1À58-1À62 g/c.c.; in another embodiment a water-soluble protective colloid (preferably 0À1-0À2%) is added at stage (b), mild shearing agitation is used, and the final particle size is 150-600Á with a density of 1À3- 1À38 g/c.c. Heptane is the preferred hydrocarbon using methyl ethyl ketone or acetone as solvent, and gum arabic or methyl cellulose as colloid. Long lists of alternatives are given. The starting nitrocellulose is preferably subjected to a fibre-beating step before step (a) and may have an N-content of 10À9-13À5%.
GB162867A 1967-01-11 1967-01-11 Process for densifying nitrocellulose Expired GB1137653A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB162867A GB1137653A (en) 1967-01-11 1967-01-11 Process for densifying nitrocellulose

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB162867A GB1137653A (en) 1967-01-11 1967-01-11 Process for densifying nitrocellulose

Publications (1)

Publication Number Publication Date
GB1137653A true GB1137653A (en) 1968-12-27

Family

ID=9725233

Family Applications (1)

Application Number Title Priority Date Filing Date
GB162867A Expired GB1137653A (en) 1967-01-11 1967-01-11 Process for densifying nitrocellulose

Country Status (1)

Country Link
GB (1) GB1137653A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2100412A1 (en) * 1970-01-09 1971-07-29 Etat Francais represente par Ie Mimstere dEtat charge de la Defense Nationale, Delegation Ministerielle pour Armement (DIRECTION DES POUDRES), Paris Nitrocellulose granules and process for their preparation
CN114437376A (en) * 2022-02-21 2022-05-06 北方化学工业股份有限公司 Preparation method of nitrocotton for nailing medicine

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2100412A1 (en) * 1970-01-09 1971-07-29 Etat Francais represente par Ie Mimstere dEtat charge de la Defense Nationale, Delegation Ministerielle pour Armement (DIRECTION DES POUDRES), Paris Nitrocellulose granules and process for their preparation
CN114437376A (en) * 2022-02-21 2022-05-06 北方化学工业股份有限公司 Preparation method of nitrocotton for nailing medicine
CN114437376B (en) * 2022-02-21 2023-09-26 北方化学工业股份有限公司 Preparation method of nitrocotton for nail shooting medicine

Similar Documents

Publication Publication Date Title
GB1075193A (en) Improvements in or relating to a process for preparing densified particles of nitrocellulose
ATE15679T1 (en) PROCESS FOR THE PRODUCTION OF MICROPOWDERS FROM CELLULOSE ETHER OR CELLULOSE.
GB1028724A (en) Improvements in or relating to process of preparing hydroxypropyl cellulose
DE1225607B (en) Method for the encapsulation of acetylsalicylic acid
GB535137A (en) Improvements in or relating to explosives suitable for coal blasting
ES292512A2 (en) Procedure for the production of an oximethylene polymer (Machine-translation by Google Translate, not legally binding)
GB1137653A (en) Process for densifying nitrocellulose
GB1125852A (en) Process for the manufacture of densified nitrocellulose products
DE1477914A1 (en) Method and apparatus for the production of spheroidal particles
GB1160481A (en) Method and Apparatus for Processing Heat-Softenable Mineral Materials.
SE7514098L (en) PROCEDURE FOR GRINDING CELLULOSA AND / OR ITS DERIVATIVES WITH ETHER GROUPS
GB1074492A (en) Novel processes for preparing steroid compounds, the comopounds when thus prepared, novel steroid compounds thereby prepared, and pharmaceutical compositions containing the novel compounds
DE814582C (en) Separation of non-flammable substances from ground coal
GB916998A (en) Process for the improvement of lacquers
DE908792C (en) Process for the preparation of dispersions of cellulose derivatives
GB753564A (en) Process for extracting impurities from waste acetic acid in the manufacture of acetyl-celluloses
US2353243A (en) Method of making cellulose powder
DE664576C (en) Process for obtaining glycerine from liquids containing carbohydrates fermented on glycerine
GB293485A (en) Improvements in the manufacture and production of coloured cellulose plastics and solutions thereof
GB494277A (en) Improvements in or relating to the manufacture of propellant explosives
DE495040C (en) Process for the production of lacquers, impregnating agents, film and printing solutions
GB295942A (en) Improved manufacture of materials from cellulose ethers and esters
GB786678A (en) Fluorescent compositions
ES239718A1 (en) Procedure for regeneration of viscoses, and more particularly of pintures waste (Machine-translation by Google Translate, not legally binding)
GB615580A (en) Improvements in or relating to a method of manufacturing masses of metal particles