GB510705A - Process for preparing nitrocellulose - Google Patents

Process for preparing nitrocellulose

Info

Publication number
GB510705A
GB510705A GB3480/38A GB348038A GB510705A GB 510705 A GB510705 A GB 510705A GB 3480/38 A GB3480/38 A GB 3480/38A GB 348038 A GB348038 A GB 348038A GB 510705 A GB510705 A GB 510705A
Authority
GB
United Kingdom
Prior art keywords
per cent
cellulose
refined
acid
feb
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
GB3480/38A
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.)
Kodak Ltd
Original Assignee
Kodak Ltd
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 Kodak Ltd filed Critical Kodak Ltd
Publication of GB510705A publication Critical patent/GB510705A/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
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03C—PHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES; PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR, STEREO-PHOTOGRAPHIC PROCESSES; AUXILIARY PROCESSES IN PHOTOGRAPHY
    • G03C1/00—Photosensitive materials
    • G03C1/76—Photosensitive materials characterised by the base or auxiliary layers
    • G03C1/795—Photosensitive materials characterised by the base or auxiliary layers the base being of macromolecular substances

Landscapes

  • Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Biochemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Polysaccharides And Polysaccharide Derivatives (AREA)

Abstract

510,705. Nitro-cellulose. KODAK, Ltd. Feb. 4, 1938, No. 3480. Convention date, Feb. 4, 1937. [Class 2(ii)] Cellulose, having a cuprammonium viscosity of not more than 12 seconds, and not more than 7 per cent. of which is soluble in 7.14 per cent. caustic soda or 10 per cent. caustic potash, is nitrated with a nitrating bath containing 14-35 per cent. nitric acid, 66-47 per cent. sulphuric acid and a total combined content of nitric and sulphuric acids of 79-83 per cent., the sum of the equivalent percentages of these acids (which are determined by dividing the percentage of each acid by its equivalent weight) being 1.57 to 1.52. The method of determining the cuprammonium viscosity of the cellulose is indicated. The nitrocellulose obtained by the process is completely soluble in methyl alcohol, and sheeting made therefrom, for instance by coating out a solution thereof in methyl alcohol containing a little acetone, may be employed as a base for photographic film. Examples are given of the nitration of refined cotton linters, but refined wood pulp, particularly refined sulphite pulp, may also be used.
GB3480/38A 1937-02-04 1938-02-04 Process for preparing nitrocellulose Expired GB510705A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US510706XA 1937-02-04 1937-02-04

Publications (1)

Publication Number Publication Date
GB510705A true GB510705A (en) 1939-08-04

Family

ID=21969146

Family Applications (2)

Application Number Title Priority Date Filing Date
GB3549/38A Expired GB510706A (en) 1937-02-04 1938-02-04 Sheeting suitable for use as photographic film base and solutions for the manufacture thereof
GB3480/38A Expired GB510705A (en) 1937-02-04 1938-02-04 Process for preparing nitrocellulose

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB3549/38A Expired GB510706A (en) 1937-02-04 1938-02-04 Sheeting suitable for use as photographic film base and solutions for the manufacture thereof

Country Status (2)

Country Link
DE (1) DE736309C (en)
GB (2) GB510706A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102321183A (en) * 2011-08-05 2012-01-18 四川北方硝化棉股份有限公司 Wood pulp nitrocotton production method
CN110794083A (en) * 2019-11-11 2020-02-14 四川北方硝化棉股份有限公司 Method for analyzing nitrocotton mixed acid components

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102321183A (en) * 2011-08-05 2012-01-18 四川北方硝化棉股份有限公司 Wood pulp nitrocotton production method
CN110794083A (en) * 2019-11-11 2020-02-14 四川北方硝化棉股份有限公司 Method for analyzing nitrocotton mixed acid components

Also Published As

Publication number Publication date
DE736309C (en) 1943-06-11
GB510706A (en) 1939-08-04

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