DE69104374D1 - Verfahren zur erhaltung der mechanischen festigkeit von chemischen zellstoffen. - Google Patents

Verfahren zur erhaltung der mechanischen festigkeit von chemischen zellstoffen.

Info

Publication number
DE69104374D1
DE69104374D1 DE69104374T DE69104374T DE69104374D1 DE 69104374 D1 DE69104374 D1 DE 69104374D1 DE 69104374 T DE69104374 T DE 69104374T DE 69104374 T DE69104374 T DE 69104374T DE 69104374 D1 DE69104374 D1 DE 69104374D1
Authority
DE
Germany
Prior art keywords
pct
mechanical strength
maintaining
date apr
chemical cells
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 - Lifetime
Application number
DE69104374T
Other languages
English (en)
Inventor
Marc Hoyos
Marcel Robberechts
Paul Essemaeker
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.)
Solvay Chimie SA
Original Assignee
Solvay Interox SA
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 Solvay Interox SA filed Critical Solvay Interox SA
Application granted granted Critical
Publication of DE69104374D1 publication Critical patent/DE69104374D1/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • 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
    • D21C9/10—Bleaching ; Apparatus therefor
    • D21C9/16—Bleaching ; Apparatus therefor with per 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
    • 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
    • D21C9/10—Bleaching ; Apparatus therefor
    • D21C9/1057—Multistage, with compounds cited in more than one sub-group D21C9/10, D21C9/12, D21C9/16
    • 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
    • D21C9/10—Bleaching ; Apparatus therefor
    • D21C9/1084—Bleaching ; Apparatus therefor with reducing compounds

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Paper (AREA)
  • Materials For Medical Uses (AREA)
  • Medicines That Contain Protein Lipid Enzymes And Other Medicines (AREA)
  • Agricultural Chemicals And Associated Chemicals (AREA)
  • Compounds Of Unknown Constitution (AREA)
  • Immobilizing And Processing Of Enzymes And Microorganisms (AREA)
  • Apparatus Associated With Microorganisms And Enzymes (AREA)
DE69104374T 1990-10-17 1991-10-04 Verfahren zur erhaltung der mechanischen festigkeit von chemischen zellstoffen. Expired - Lifetime DE69104374D1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
BE9000985A BE1004630A3 (fr) 1990-10-17 1990-10-17 Procede pour la preservation des caracteristiques de resistance mecanique des pates a papier chimiques.
PCT/EP1991/001906 WO1992007139A1 (fr) 1990-10-17 1991-10-04 Procede pour la preservation des caracteristiques de resistance mecanique des pates a papier chimiques

Publications (1)

Publication Number Publication Date
DE69104374D1 true DE69104374D1 (de) 1994-11-03

Family

ID=3884976

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69104374T Expired - Lifetime DE69104374D1 (de) 1990-10-17 1991-10-04 Verfahren zur erhaltung der mechanischen festigkeit von chemischen zellstoffen.

Country Status (13)

Country Link
US (1) US5534115A (de)
EP (1) EP0553141B1 (de)
AT (1) ATE112340T1 (de)
AU (1) AU648115B2 (de)
BE (1) BE1004630A3 (de)
BR (1) BR9107000A (de)
CA (1) CA2094268A1 (de)
DE (1) DE69104374D1 (de)
FI (1) FI931664A (de)
NO (1) NO300901B1 (de)
PT (1) PT99243B (de)
WO (1) WO1992007139A1 (de)
ZA (1) ZA918219B (de)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE1004630A3 (fr) * 1990-10-17 1992-12-22 Interox Internat Sa Procede pour la preservation des caracteristiques de resistance mecanique des pates a papier chimiques.
EP0652321B1 (de) * 1993-11-04 1998-01-21 Morton International, Inc. Bleichen von chemischem Zellstoff
SE502135C2 (sv) * 1994-08-16 1995-08-28 Kvaerner Pulping Tech Bleksekvens för kemisk massa innefattande ett sulfonerande bleksteg
USH1690H (en) * 1995-07-20 1997-11-04 Nye; Jeffrey Process for bleaching kraft pulp
SE516219C2 (sv) * 1995-10-26 2001-12-03 Kvaerner Pulping Tech Blekning av kemisk pappersmassa i ett sulfonerande steg och ett surt syredelignifieringssteg
ES2122907B1 (es) * 1996-08-22 1999-07-01 Valverde Alonso Angel Procedimiento ecologico de obtencion de celulosa.
US6325892B1 (en) * 1998-09-23 2001-12-04 University Of New Brunswick Method of delignifying sulphite pulp with oxygen and borohydride
US6428653B1 (en) 2000-12-04 2002-08-06 West Fraser Timber Co. Ltd. Method of bleaching with formamidine sulfinic acid using a reducing agent to eliminate residual peroxide
US20080087390A1 (en) * 2006-10-11 2008-04-17 Fort James Corporation Multi-step pulp bleaching
US9932709B2 (en) 2013-03-15 2018-04-03 Ecolab Usa Inc. Processes and compositions for brightness improvement in paper production
US8980051B2 (en) * 2009-04-24 2015-03-17 International Paper Company Sulfonation of pulp produced by alkali pulping process
BR102014027199B1 (pt) * 2014-07-14 2022-10-04 Nalco Company Método para aprimorar a fabricação de polpa de soda ou kraft

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3005947B1 (de) * 1980-02-16 1981-01-29 Degussa Verfahren zur Bleiche von Zellstoffen mittels organischer Persaeure
CA1249402A (en) * 1984-12-21 1989-01-31 Pulp And Paper Research Institute Of Canada Multistage brightening of high yield and ultra high- yield wood pulps
DE3661641D1 (en) * 1985-02-15 1989-02-09 Kamyr Ab Multi peroxide stage mechanical pulp bleaching
JPH0197291A (ja) * 1987-10-05 1989-04-14 Fmc Corp 機械パルプの漂白方法
FR2659363B1 (fr) * 1990-03-07 1996-04-19 Atochem Procede de preparation de pates a haut rendement blanchies.
BE1004630A3 (fr) * 1990-10-17 1992-12-22 Interox Internat Sa Procede pour la preservation des caracteristiques de resistance mecanique des pates a papier chimiques.

Also Published As

Publication number Publication date
EP0553141A1 (de) 1993-08-04
AU648115B2 (en) 1994-04-14
BR9107000A (pt) 1993-09-08
EP0553141B1 (de) 1994-09-28
CA2094268A1 (fr) 1992-04-18
WO1992007139A1 (fr) 1992-04-30
AU8637191A (en) 1992-05-20
PT99243B (pt) 1999-04-30
FI931664A0 (fi) 1993-04-14
BE1004630A3 (fr) 1992-12-22
ZA918219B (en) 1992-09-30
FI931664A (fi) 1993-04-14
US5534115A (en) 1996-07-09
PT99243A (pt) 1992-08-31
ATE112340T1 (de) 1994-10-15
NO300901B1 (no) 1997-08-11
NO931419L (no) 1993-04-16
NO931419D0 (no) 1993-04-16

Similar Documents

Publication Publication Date Title
DE69104374D1 (de) Verfahren zur erhaltung der mechanischen festigkeit von chemischen zellstoffen.
DE69521653T2 (de) Verfahren zur Kontrolle der Strukturstabilität von Kollagenfasern hergestellt aus Lösungen und Dispersionen, behandelt mit Natriumhydroxid für die Deaktivierung von infektiösen Wirkstoffen
DE69517818T2 (de) Verfahren zur hydrolyse von organischen materialien
DE69005308D1 (de) Verfahren zur herstellung von lignocellulosepulpe.
ATE174527T1 (de) Membran für die isolierung von viren aus lösungen
ATE111987T1 (de) Verfahren zur enzymatischen entfärbung.
EP0344312A4 (de) Hydrophile, poröse polyvinylidenfluoridmembran und verfahren zur herstellung.
DE3762022D1 (de) Verfahren zur herstellung von borsaeure-suspensionen.
DE69604087D1 (de) Verfahren zur herstellung von einer hyaluronsäurefraktion mit niedrigem polydispersionindex
ATE152464T1 (de) Polymerisation von lignin bei alkalischem ph-wert
DE59703792D1 (de) Verfahren zur gewinnung von glykolen mit niedrigem aldehydgehalt
SE9402523L (sv) Sätt att behandla ett igensatt poröst medium
ATE64887T1 (de) Verfahren zum holzschutz.
DE59708046D1 (de) Verfahren zur Herstellung von Celluloselösungen in wasserhaltigem Aminoxid
DE59703451D1 (de) Verfahren zur reduktion von schwefel- und küpenfarbstoffen
DE3869195D1 (de) Extraktion eines granulocyt-makrophagen-koloniestimulierungsfaktors aus bakterien.
DE59507540D1 (de) Verfahren zur herstellung von weinsäure
DE69618340T2 (de) Verfahren zur herstellung von substituierten anthrachinonen und deren verwendung zur herstellung von rheinen
ATE107961T1 (de) Verfahren zur regeneration von pyridin-cofaktoren durch elektrochemische reduktion.
ATE90225T1 (de) Methode zur verbesserung der trennungseigenschaften von semipermeablen membranen und die nach dieser methode verbesserten membranen.
ATE175668T1 (de) Verfahren zur herstellung von 8-g(a),12-oxido- 13,14,15,16-tetranorlabdan

Legal Events

Date Code Title Description
8332 No legal effect for de