CH99050A - Process for the extraction and purification of cellulose from cellulose-containing materials. - Google Patents

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

Info

Publication number
CH99050A
CH99050A CH99050DA CH99050A CH 99050 A CH99050 A CH 99050A CH 99050D A CH99050D A CH 99050DA CH 99050 A CH99050 A CH 99050A
Authority
CH
Switzerland
Prior art keywords
cellulose
purification
extraction
containing materials
chlorine dioxide
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
Publication of CH99050A publication Critical patent/CH99050A/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)
  • Chemical And Physical Treatments For Wood And The Like (AREA)
  • Paper (AREA)

Description

  

  Verfahren zur Gewinnung und Reinigung von Zellstoff aus     zellstoffhaltigen    Stoffen.    Es ist bekannt, Holz und andere     zellstoff-          haltige    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 Chlor  dioxyd veränderte     Lignin    aufzulösen ver  mögen. Hierzu ist beispielsweise verdünnte  Essigsäure geeignet.



  Process for the extraction and purification of cellulose from 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 are able to dissolve the lignin modified by chlorine dioxide. Dilute acetic acid, for example, is suitable for this.

Claims (1)

PATENTANSPRUCII: Verfahren zur Gewinnung und Reinigung von Zellstoff aus zellstoffhaltigen Stoffen, dadurch gekennzeichnet, dass Clilordioxyd in Lösemitteln, die das durch Chlordioxyd um gewandelte Lignin aufzulösen vermögen, zur Einwirkung gebracht wird. UNTERANSPRUCH: Verfahren gemäss Patentanspruch, da durch gekennzeichnet, dass das Lösemittel verdünnte Essigsäure ist. PATENT CLAIM: Process for the production and purification of cellulose from cellulose-containing substances, characterized in that chlorine dioxide is brought into action in solvents which are able to dissolve the lignin converted by chlorine dioxide. SUBClaim: Method according to claim, characterized in that the solvent is dilute acetic acid.
CH99050D 1922-01-04 1922-01-28 Process for the extraction and purification of cellulose from cellulose-containing materials. CH99050A (en)

Applications Claiming Priority (1)

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

Publications (1)

Publication Number Publication Date
CH99050A true CH99050A (en) 1923-05-01

Family

ID=5644109

Family Applications (1)

Application Number Title Priority Date Filing Date
CH99050D CH99050A (en) 1922-01-04 1922-01-28 Process for the extraction and purification of cellulose from 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
FR546556A (en) 1922-11-16
DE331907C (en) 1921-01-14
GB191357A (en) 1923-03-22
AT92287B (en) 1923-04-25

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