PT99243A - Processo para a preservacao das caracteristicas de resistencia macanica das pastas de papel quimicas - Google Patents

Processo para a preservacao das caracteristicas de resistencia macanica das pastas de papel quimicas

Info

Publication number
PT99243A
PT99243A PT99243A PT9924391A PT99243A PT 99243 A PT99243 A PT 99243A PT 99243 A PT99243 A PT 99243A PT 9924391 A PT9924391 A PT 9924391A PT 99243 A PT99243 A PT 99243A
Authority
PT
Portugal
Prior art keywords
pct
macanial
preservation
resistance
chemical paper
Prior art date
Application number
PT99243A
Other languages
English (en)
Other versions
PT99243B (pt
Inventor
Marc Hoyos
Marcel Robberechts
Paul Essemaeker
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 PT99243A publication Critical patent/PT99243A/pt
Publication of PT99243B publication Critical patent/PT99243B/pt

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)
  • Compounds Of Unknown Constitution (AREA)
  • Medicines That Contain Protein Lipid Enzymes And Other Medicines (AREA)
  • Agricultural Chemicals And Associated Chemicals (AREA)
  • Immobilizing And Processing Of Enzymes And Microorganisms (AREA)
  • Apparatus Associated With Microorganisms And Enzymes (AREA)
PT99243A 1990-10-17 1991-10-16 Processo para a preservacao das caracteristicas de resistencia macanica das pastas de papel quimicas PT99243B (pt)

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 (2)

Publication Number Publication Date
PT99243A true PT99243A (pt) 1992-08-31
PT99243B PT99243B (pt) 1999-04-30

Family

ID=3884976

Family Applications (1)

Application Number Title Priority Date Filing Date
PT99243A PT99243B (pt) 1990-10-17 1991-10-16 Processo para a preservacao das caracteristicas de resistencia macanica das pastas de papel quimicas

Country Status (13)

Country Link
US (1) US5534115A (pt)
EP (1) EP0553141B1 (pt)
AT (1) ATE112340T1 (pt)
AU (1) AU648115B2 (pt)
BE (1) BE1004630A3 (pt)
BR (1) BR9107000A (pt)
CA (1) CA2094268A1 (pt)
DE (1) DE69104374D1 (pt)
FI (1) FI931664A0 (pt)
NO (1) NO300901B1 (pt)
PT (1) PT99243B (pt)
WO (1) WO1992007139A1 (pt)
ZA (1) ZA918219B (pt)

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
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
SE8600615L (sv) * 1985-02-15 1986-08-16 Kamyr Ab Hog ljushet astadkommes genom blekning av mekanisk massa, sasom kemisk-mekanisk massa (cmp), kemisk-termisk-mekanisk massa (ctmp) och liknande
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
ATE112340T1 (de) 1994-10-15
EP0553141A1 (fr) 1993-08-04
AU648115B2 (en) 1994-04-14
NO931419D0 (no) 1993-04-16
PT99243B (pt) 1999-04-30
ZA918219B (en) 1992-09-30
FI931664A (fi) 1993-04-14
BE1004630A3 (fr) 1992-12-22
AU8637191A (en) 1992-05-20
US5534115A (en) 1996-07-09
BR9107000A (pt) 1993-09-08
NO931419L (no) 1993-04-16
WO1992007139A1 (fr) 1992-04-30
FI931664A0 (fi) 1993-04-14
CA2094268A1 (fr) 1992-04-18
DE69104374D1 (de) 1994-11-03
NO300901B1 (no) 1997-08-11
EP0553141B1 (fr) 1994-09-28

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Legal Events

Date Code Title Description
BB1A Laying open of patent application

Effective date: 19920422

FG3A Patent granted, date of granting

Effective date: 19990107

MM3A Annulment or lapse

Free format text: LAPSE DUE TO NON-PAYMENT OF FEES

Effective date: 20000731