FR2333892B1 - - Google Patents

Info

Publication number
FR2333892B1
FR2333892B1 FR7537532A FR7537532A FR2333892B1 FR 2333892 B1 FR2333892 B1 FR 2333892B1 FR 7537532 A FR7537532 A FR 7537532A FR 7537532 A FR7537532 A FR 7537532A FR 2333892 B1 FR2333892 B1 FR 2333892B1
Authority
FR
France
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
FR7537532A
Other languages
French (fr)
Other versions
FR2333892A1 (fr
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 FR7537532A priority Critical patent/FR2333892A1/fr
Publication of FR2333892A1 publication Critical patent/FR2333892A1/fr
Application granted granted Critical
Publication of FR2333892B1 publication Critical patent/FR2333892B1/fr
Granted legal-status Critical Current

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
    • D21C3/22—Other features of pulping processes
    • D21C3/222—Use of compounds accelerating the pulping processes
    • 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
    • D21C9/00—After-treatment of cellulose pulp, e.g. of wood pulp, or cotton linters ; Treatment of dilute or dewatered pulp or process improvement taking place after obtaining the raw cellulosic material and not provided for elsewhere
    • D21C9/08—Removal of fats, resins, pitch or waxes; Chemical or physical purification, i.e. refining, of crude cellulose by removing non-cellulosic contaminants, optionally combined with bleaching
    • D21C9/083—Removal of fats, resins, pitch or waxes; Chemical or physical purification, i.e. refining, of crude cellulose by removing non-cellulosic contaminants, optionally combined with bleaching with inorganic compounds

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Catalysts (AREA)
FR7537532A 1975-12-04 1975-12-04 Procede chimique d'extraction de la cellulose des pailles de cereales, roseaux, alfa, bois tendre et resineux par solution sodique agrementee d'un catalyseur negatif soit un corps reducteur reagissant sur l'hydrate de sodium. adjonction d'un complement de purification de la cellulose obtenue par une solution acide Granted FR2333892A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7537532A FR2333892A1 (fr) 1975-12-04 1975-12-04 Procede chimique d'extraction de la cellulose des pailles de cereales, roseaux, alfa, bois tendre et resineux par solution sodique agrementee d'un catalyseur negatif soit un corps reducteur reagissant sur l'hydrate de sodium. adjonction d'un complement de purification de la cellulose obtenue par une solution acide

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7537532A FR2333892A1 (fr) 1975-12-04 1975-12-04 Procede chimique d'extraction de la cellulose des pailles de cereales, roseaux, alfa, bois tendre et resineux par solution sodique agrementee d'un catalyseur negatif soit un corps reducteur reagissant sur l'hydrate de sodium. adjonction d'un complement de purification de la cellulose obtenue par une solution acide

Publications (2)

Publication Number Publication Date
FR2333892A1 FR2333892A1 (fr) 1977-07-01
FR2333892B1 true FR2333892B1 (enExample) 1978-06-30

Family

ID=9163459

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7537532A Granted FR2333892A1 (fr) 1975-12-04 1975-12-04 Procede chimique d'extraction de la cellulose des pailles de cereales, roseaux, alfa, bois tendre et resineux par solution sodique agrementee d'un catalyseur negatif soit un corps reducteur reagissant sur l'hydrate de sodium. adjonction d'un complement de purification de la cellulose obtenue par une solution acide

Country Status (1)

Country Link
FR (1) FR2333892A1 (enExample)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE417114B (sv) * 1977-07-25 1981-02-23 Mo Och Domsjoe Ab Forfarande for forebyggande av inkrustbildning i cellulosafabriker
EP0012775B1 (en) * 1978-12-20 1984-05-16 Eric S. Prior Process for pulping ligno-cellulosic material
DE2967273D1 (en) * 1979-07-19 1984-11-29 Eric S Prior Accelerated pulping process
EP0148815A1 (en) * 1983-06-06 1985-07-24 Hch. Sieger Papier- und Wellpappenwerke KG Zülpich A process for the chemical pulping of lignocellulosic material

Also Published As

Publication number Publication date
FR2333892A1 (fr) 1977-07-01

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Legal Events

Date Code Title Description
ST Notification of lapse