ZA918219B - Process for preserving the mechanical strength properties of chemical paper pulps - Google Patents

Process for preserving the mechanical strength properties of chemical paper pulps

Info

Publication number
ZA918219B
ZA918219B ZA918219A ZA918219A ZA918219B ZA 918219 B ZA918219 B ZA 918219B ZA 918219 A ZA918219 A ZA 918219A ZA 918219 A ZA918219 A ZA 918219A ZA 918219 B ZA918219 B ZA 918219B
Authority
ZA
South Africa
Prior art keywords
preserving
mechanical strength
pct
strength properties
chemical paper
Prior art date
Application number
ZA918219A
Other languages
English (en)
Inventor
Marc Hoyos
Hoyos Marc
Marcel Robberechts
Robberechts Marcel
Paul Essemaeker
Essemaeker Paul
Original Assignee
Interox Int 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 Interox Int Sa filed Critical Interox Int Sa
Publication of ZA918219B publication Critical patent/ZA918219B/xx

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)
  • Agricultural Chemicals And Associated Chemicals (AREA)
  • Compounds Of Unknown Constitution (AREA)
  • Medicines That Contain Protein Lipid Enzymes And Other Medicines (AREA)
  • Immobilizing And Processing Of Enzymes And Microorganisms (AREA)
  • Apparatus Associated With Microorganisms And Enzymes (AREA)
ZA918219A 1990-10-17 1991-10-15 Process for preserving the mechanical strength properties of chemical paper pulps ZA918219B (en)

Applications Claiming Priority (1)

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.

Publications (1)

Publication Number Publication Date
ZA918219B true ZA918219B (en) 1992-09-30

Family

ID=3884976

Family Applications (1)

Application Number Title Priority Date Filing Date
ZA918219A ZA918219B (en) 1990-10-17 1991-10-15 Process for preserving the mechanical strength properties of chemical paper pulps

Country Status (13)

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

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 (en) * 1993-11-04 1998-01-21 Morton International, Inc. Chemical pulp bleaching
SE9402726L (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
ATE39714T1 (de) * 1985-02-15 1989-01-15 Kamyr Ab Mehrstufige peroxidbleiche einer mechanischen pulpe.
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
US5534115A (en) 1996-07-09
DE69104374D1 (de) 1994-11-03
AU648115B2 (en) 1994-04-14
BR9107000A (pt) 1993-09-08
WO1992007139A1 (fr) 1992-04-30
BE1004630A3 (fr) 1992-12-22
FI931664A0 (fi) 1993-04-14
NO931419L (no) 1993-04-16
EP0553141A1 (fr) 1993-08-04
FI931664A (fi) 1993-04-14
ATE112340T1 (de) 1994-10-15
CA2094268A1 (fr) 1992-04-18
AU8637191A (en) 1992-05-20
NO300901B1 (no) 1997-08-11
NO931419D0 (no) 1993-04-16
EP0553141B1 (fr) 1994-09-28
PT99243A (pt) 1992-08-31
PT99243B (pt) 1999-04-30

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