AT92287B - Process for the extraction and purification of cellulose from wood and similar cellulose-containing materials. - Google Patents

Process for the extraction and purification of cellulose from wood and similar cellulose-containing materials.

Info

Publication number
AT92287B
AT92287B AT92287DA AT92287B AT 92287 B AT92287 B AT 92287B AT 92287D A AT92287D A AT 92287DA AT 92287 B AT92287 B AT 92287B
Authority
AT
Austria
Prior art keywords
cellulose
wood
purification
extraction
containing materials
Prior art date
Application number
Other languages
German (de)
Inventor
Schmidt Erich
Original Assignee
Schmidt Erich
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 Schmidt Erich filed Critical Schmidt Erich
Application granted granted Critical
Publication of AT92287B publication Critical patent/AT92287B/en

Links

Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
    • D21C3/00—Pulping cellulose-containing materials
    • D21C3/003—Pulping cellulose-containing materials with organic compounds
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
    • D21C3/00—Pulping cellulose-containing materials
    • D21C3/18—Pulping cellulose-containing materials with halogens or halogen-generating compounds
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
    • D21C3/00—Pulping cellulose-containing materials
    • D21C3/20—Pulping cellulose-containing materials with organic solvents or in solvent environment

Landscapes

  • Polysaccharides And Polysaccharide Derivatives (AREA)
  • Paper (AREA)
  • Chemical And Physical Treatments For Wood And The Like (AREA)

Description

  

   <Desc/Clms Page number 1> 
 



    Verfahren   zur   Gewinnung   und Reinigung von Zellstoff aus Holz und ähnlichen zellstoff- haltigen Stoffen. 



   Es ist bekannt, Holz und andere zellstoffhaltige Rohstoffe durch Einwirkung von Chlordioxydlösungen und Nachbehandlung mit Alkalilauge aufzuschliessen. 



   Es hat sich nun herausgestellt, dass das Verfahren wesentlich vereinfacht werden   kann,   wenn man das Chlordioxyd in solchen Lösemitteln anwendet, die das durch Chlordioxyd veränderte Lignin 
 EMI1.1 
 

**WARNUNG** Ende DESC Feld kannt Anfang CLMS uberlappen**.



   <Desc / Clms Page number 1>
 



    Process for the extraction and purification of cellulose from wood and similar cellulose-containing materials.



   It is known that wood and other raw materials containing cellulose can be broken down by the action of chlorine dioxide solutions and subsequent treatment with alkali.



   It has now been found that the process can be considerably simplified if the chlorine dioxide is used in solvents that contain the lignin that has been modified by chlorine dioxide
 EMI1.1
 

** WARNING ** End of DESC field may overlap beginning of CLMS **.

Claims (1)

PATENT-ANSPRUCH : Verfahren zur Gewinnung und Reinigung von Zellstoff aus Holz und ähnlichen zellstoffhaltigen Stoffen, dadurch gekennzeichnet, dass das Chlordioxyd in Lösemitteln, die das durch Chlordioxyd umge- EMI1.2 **WARNUNG** Ende CLMS Feld Kannt Anfang DESC uberlappen**. PATENT CLAIM: Process for the extraction and purification of cellulose from wood and similar cellulose-containing substances, characterized in that the chlorine dioxide is contained in solvents that EMI1.2 ** WARNING ** End of CLMS field may overlap beginning of DESC **.
AT92287D 1922-01-04 1922-01-25 Process for the extraction and purification of cellulose from wood and similar cellulose-containing materials. AT92287B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE92287X 1922-01-04

Publications (1)

Publication Number Publication Date
AT92287B true AT92287B (en) 1923-04-25

Family

ID=5644109

Family Applications (1)

Application Number Title Priority Date Filing Date
AT92287D AT92287B (en) 1922-01-04 1922-01-25 Process for the extraction and purification of cellulose from wood and similar cellulose-containing materials.

Country Status (5)

Country Link
AT (1) AT92287B (en)
CH (1) CH99050A (en)
DE (1) DE331907C (en)
FR (1) FR546556A (en)
GB (1) GB191357A (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2468771A (en) * 1944-04-03 1949-05-03 Univ Minnesota Process of preparing fibers and yarns
US2491499A (en) * 1946-02-12 1949-12-20 Diamond Alkali Co Treating ligno-cellulosic materials and resulting product
US2513788A (en) * 1947-01-31 1950-07-04 Brown Co Bleaching of sulfate wood pulp
US2706673A (en) * 1951-10-19 1955-04-19 Elmer R Burling Method of bleaching with chlorine dioxide
BE518419A (en) * 1952-03-26
US2741537A (en) * 1952-03-26 1956-04-10 Olin Mathieson Available chlorine single-stage bleaching of sulfate pulp

Also Published As

Publication number Publication date
CH99050A (en) 1923-05-01
FR546556A (en) 1922-11-16
DE331907C (en) 1921-01-14
GB191357A (en) 1923-03-22

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