GB322997A - An improved method for the preparation of cellulose, particularly for nitration - Google Patents

An improved method for the preparation of cellulose, particularly for nitration

Info

Publication number
GB322997A
GB322997A GB1746428A GB1746428A GB322997A GB 322997 A GB322997 A GB 322997A GB 1746428 A GB1746428 A GB 1746428A GB 1746428 A GB1746428 A GB 1746428A GB 322997 A GB322997 A GB 322997A
Authority
GB
United Kingdom
Prior art keywords
hollander
water
pulp
sample
cellulose
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
GB1746428A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to GB1746428A priority Critical patent/GB322997A/en
Publication of GB322997A publication Critical patent/GB322997A/en
Expired legal-status Critical Current

Links

Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21B—FIBROUS RAW MATERIALS OR THEIR MECHANICAL TREATMENT
    • D21B1/00—Fibrous raw materials or their mechanical treatment

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Polysaccharides And Polysaccharide Derivatives (AREA)

Abstract

322,997. Heide, H. C., (Schaub, J. J.). June 16, 1928. Pulp, preparation of.-Wood cellulose is subjected to long continued disintegration, for example for 2-3 hours, in water by means of a refining mill or hollander and the resulting slime or pulp freed from water on a paper-making machine in which sheets, ribbons or strips are formed. The ribbons or strips may be twisted into a cord and cut into small pellets, which are particularly suitable for nitration. Small quantities of acids, alkalies or salts may be added to the water. In order to ascertain the proper period for the disintegration process, a sample of the cellulose, which must be sufficiently finely ground to settle evenly, is placed in the hollander and this is started up to produce an equally distributed pulp. A hundred cubic centimetres of this pulpy liquid are then taken out and the operation of the hollander stopped. The hundred cubic centimetres of pulpy liquid are placed in a glass cylinder which is filled with water to the five litre mark or according to the Provisional Specification to the litre mark. The cylinder is shaken and the contents allowed to stand for two hours, when the volume of the settled is measured. The hollander is then re-started and at intervals its operation is stopped and similar samples treated in the same way. When a sample is obtained of which the final volume is one-half of that in the case of the first sample taken before treatment the optimum state is reached. The total time for which the hollander has been in operation is then noted and the bulk is subjected to treatment for this time.
GB1746428A 1928-06-16 1928-06-16 An improved method for the preparation of cellulose, particularly for nitration Expired GB322997A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1746428A GB322997A (en) 1928-06-16 1928-06-16 An improved method for the preparation of cellulose, particularly for nitration

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1746428A GB322997A (en) 1928-06-16 1928-06-16 An improved method for the preparation of cellulose, particularly for nitration

Publications (1)

Publication Number Publication Date
GB322997A true GB322997A (en) 1929-12-16

Family

ID=10095624

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1746428A Expired GB322997A (en) 1928-06-16 1928-06-16 An improved method for the preparation of cellulose, particularly for nitration

Country Status (1)

Country Link
GB (1) GB322997A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1418268A2 (en) * 2002-10-25 2004-05-12 Weyerhaeuser Company Flowable and meterable densified fiber particle
EP1422336A1 (en) * 2002-10-25 2004-05-26 Weyerhaeuser Company Process for making a flowable and meterable particulate material comprising densified cellulose fibers

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1418268A2 (en) * 2002-10-25 2004-05-12 Weyerhaeuser Company Flowable and meterable densified fiber particle
EP1422336A1 (en) * 2002-10-25 2004-05-26 Weyerhaeuser Company Process for making a flowable and meterable particulate material comprising densified cellulose fibers
AU2003252382B2 (en) * 2002-10-25 2005-10-06 Weyerhaeuser Company Process for making a flowable and meterable densified fiber particle
US7201825B2 (en) 2002-10-25 2007-04-10 Weyerhaeuser Company Process for making a flowable and meterable densified fiber particle
EP1418268A3 (en) * 2002-10-25 2007-05-16 Weyerhaeuser Company Flowable and meterable densified fiber particle
US7306846B2 (en) 2002-10-25 2007-12-11 Weyerhaeuser Company Flowable and meterable densified fiber particle

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