FI90888B - Menetelmä selluloosamassan valkaisemiseksi - Google Patents

Menetelmä selluloosamassan valkaisemiseksi

Info

Publication number
FI90888B
FI90888B FI890700A FI890700A FI90888B FI 90888 B FI90888 B FI 90888B FI 890700 A FI890700 A FI 890700A FI 890700 A FI890700 A FI 890700A FI 90888 B FI90888 B FI 90888B
Authority
FI
Finland
Prior art keywords
pulp
oxidation
bleaching
chemical
chlorine
Prior art date
Application number
FI890700A
Other languages
English (en)
Finnish (fi)
Swedish (sv)
Other versions
FI890700A0 (fi
FI890700A (fi
Inventor
Marja Vaheri
Veikko Jokela
Kari Miikki
Original Assignee
Enso Gutzeit Oy
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=8527891&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=FI90888(B) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Enso Gutzeit Oy filed Critical Enso Gutzeit Oy
Priority to FI890700A priority Critical patent/FI90888B/fi
Publication of FI890700A0 publication Critical patent/FI890700A0/fi
Priority to JP1241667A priority patent/JPH02221482A/ja
Priority to EP89117235A priority patent/EP0383999B1/de
Priority to ES89117235T priority patent/ES2050747T3/es
Priority to NO893714A priority patent/NO176406C/no
Priority to CA000611773A priority patent/CA1339594C/en
Priority to AT89117235T priority patent/ATE103351T1/de
Priority to DE89117235T priority patent/DE68914135D1/de
Publication of FI890700A publication Critical patent/FI890700A/fi
Publication of FI90888B publication Critical patent/FI90888B/fi
Application granted granted Critical

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
    • D21C9/1057—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
    • D21C5/00—Other processes for obtaining cellulose, e.g. cooking cotton linters ; Processes characterised by the choice of cellulose-containing starting materials
    • D21C5/005—Treatment of cellulose-containing material with microorganisms or enzymes
    • 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
    • D21C9/12—Bleaching ; Apparatus therefor with halogens or halogen-containing compounds
    • D21C9/14—Bleaching ; Apparatus therefor with halogens or halogen-containing compounds with ClO2 or chlorites

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Chemical & Material Sciences (AREA)
  • Biochemistry (AREA)
  • Microbiology (AREA)
  • Paper (AREA)
  • Polysaccharides And Polysaccharide Derivatives (AREA)
  • Noodles (AREA)
  • Cereal-Derived Products (AREA)
  • Table Devices Or Equipment (AREA)
  • Silver Salt Photography Or Processing Solution Therefor (AREA)
FI890700A 1989-02-14 1989-02-14 Menetelmä selluloosamassan valkaisemiseksi FI90888B (fi)

Priority Applications (8)

Application Number Priority Date Filing Date Title
FI890700A FI90888B (fi) 1989-02-14 1989-02-14 Menetelmä selluloosamassan valkaisemiseksi
DE89117235T DE68914135D1 (de) 1989-02-14 1989-09-18 Verfahren zum Bleichen von Zellstoff.
ES89117235T ES2050747T3 (es) 1989-02-14 1989-09-18 Procedimiento para el blanqueo de pasta papelera.
EP89117235A EP0383999B1 (de) 1989-02-14 1989-09-18 Verfahren zum Bleichen von Zellstoff
JP1241667A JPH02221482A (ja) 1989-02-14 1989-09-18 パルプ漂白法
NO893714A NO176406C (no) 1989-02-14 1989-09-18 Fremgangsmåte for bleking av masse
CA000611773A CA1339594C (en) 1989-02-14 1989-09-18 Procedure for the bleaching of pulp involving enzyme treatment and the use in the oxidation stage of a chemical with at least 50% chlorine dioxide content
AT89117235T ATE103351T1 (de) 1989-02-14 1989-09-18 Verfahren zum bleichen von zellstoff.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FI890700A FI90888B (fi) 1989-02-14 1989-02-14 Menetelmä selluloosamassan valkaisemiseksi

Publications (3)

Publication Number Publication Date
FI890700A0 FI890700A0 (fi) 1989-02-14
FI890700A FI890700A (fi) 1990-08-15
FI90888B true FI90888B (fi) 1993-12-31

Family

ID=8527891

Family Applications (1)

Application Number Title Priority Date Filing Date
FI890700A FI90888B (fi) 1989-02-14 1989-02-14 Menetelmä selluloosamassan valkaisemiseksi

Country Status (8)

Country Link
EP (1) EP0383999B1 (de)
JP (1) JPH02221482A (de)
AT (1) ATE103351T1 (de)
CA (1) CA1339594C (de)
DE (1) DE68914135D1 (de)
ES (1) ES2050747T3 (de)
FI (1) FI90888B (de)
NO (1) NO176406C (de)

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI86896B (fi) * 1989-05-04 1992-07-15 Enso Gutzeit Oy Foerfarande foer blekning av cellulosamassa.
SE465320B (sv) * 1990-01-10 1991-08-26 Korsnaes Ab Preparat som uppvisar enzymatisk delignifieringsaktivitet, saett att framstaella detsamma och tillaempningar daerav
FI89814C (fi) * 1990-02-02 1993-11-25 Enso Gutzeit Oy Foerfarande foer blekning av cellulosamassa
US5837515A (en) * 1990-05-16 1998-11-17 Alko-Yhtiot Oy Enzyme preparations and methods for their production
JP2859393B2 (ja) * 1990-07-24 1999-02-17 ノボ ノルディスク アクティーゼルスカブ セルラーゼ及びその製造法
DK203490D0 (da) * 1990-08-24 1990-08-24 Novo Nordisk As Fremgangsmaade til behandling af lignocellulosepulp og apparat til udfoerelse af processen
DE4129739A1 (de) * 1990-09-11 1992-03-12 Sandoz Ag Chlorfreies bleichen von papierpulpe
FI108800B (fi) * 1991-05-07 2002-03-28 Iogen Corp Menetelmä ja laitteisto entsyymin käyttämiseksi paperimassan valmistuksessa ja valkaisussa
CA2044100A1 (en) * 1991-06-07 1992-12-08 Janice Hamilton Biobleaching process
US5369024A (en) * 1992-03-25 1994-11-29 The United States Of America As Represented By The Secretary Of Agriculture Xylanase from streptomyces roseiscleroticus NRRL-11019 for removing color from kraft wood pulps
US5498534A (en) * 1992-03-25 1996-03-12 The United States Of America As Represented By The Secretary Of Agriculture Method of removing color from wood pulp using xylanase from streptomyces roseiscleroticus NRRL B-11019
DE4422307A1 (de) * 1994-06-17 1995-12-21 Melitta Haushaltsprodukte Verfahren zum Delignifizieren und Bleichen von ungebleichten Zellstoffsuspensionen unter Verwendung von Stickstoffverbindungen
US5935836A (en) * 1994-07-29 1999-08-10 Rohm Enzyme Finland Oy Actinomadura xylanase sequences and methods of use
US7816129B2 (en) 1994-07-29 2010-10-19 Ab Enzymes Gmbh Production and secretion of proteins of bacterial origin in filamentous fungi
US5871730A (en) * 1994-07-29 1999-02-16 Universite De Sherbrooke Thermostable xylanase DNA, protein and methods of use
US6300114B1 (en) 1994-07-29 2001-10-09 Rohm Enzyme Finland Oy Sequences of xylanase and xylanase expression vectors
WO2002057541A2 (en) 2001-01-18 2002-07-25 Iogen Bio-Products Corporation Use of xylanase in pulp bleaching
WO2003074780A1 (en) * 2002-03-06 2003-09-12 Iogen Bio-Products Corporation Xylanase treatment of chemical pulp

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1086905A (en) * 1977-10-25 1980-10-07 W. Howard Rapson Bleach plant operation
JPS5468402A (en) * 1977-11-09 1979-06-01 Kogyo Gijutsuin Property modification of biochemical pulp
FI81395B (fi) * 1988-03-14 1990-06-29 Cultor Oy Foerfarande foer blekning av cellulosamassa.

Also Published As

Publication number Publication date
FI890700A0 (fi) 1989-02-14
EP0383999A3 (en) 1990-12-12
EP0383999A2 (de) 1990-08-29
DE68914135D1 (de) 1994-04-28
NO893714L (no) 1990-08-15
EP0383999B1 (de) 1994-03-23
NO893714D0 (no) 1989-09-18
ATE103351T1 (de) 1994-04-15
JPH02221482A (ja) 1990-09-04
NO176406B (no) 1994-12-19
CA1339594C (en) 1997-12-23
NO176406C (no) 1995-03-29
FI890700A (fi) 1990-08-15
ES2050747T3 (es) 1994-06-01

Similar Documents

Publication Publication Date Title
FI90888B (fi) Menetelmä selluloosamassan valkaisemiseksi
EP0395792A3 (de) Verfahren zum Bleichen von Zellstoff
ATE48290T1 (de) Verfahren zur delignifizierung und bleiche von zellstoffen.
BR8907314A (pt) Processo para branquear polpa de celulose e enzima usada no mesmo
ATE54475T1 (de) Verfahren zur bleiche und delignifizierung von zellstoffhaltigen produkten.
FI893338A0 (fi) Foerfarande foer blekning av cellulosamassa.
DE69113444D1 (de) Verfahren zum bleichen von chemischem papierzellstoff.
NO902206D0 (no) Fremgangsmaate ved delignifisering av lignocellulosefibre.
ATE48291T1 (de) Verfahren zum bleichen von chemischen holzpulpen.
DE3563548D1 (en) Process for preparing chemical wood pulps with a view to bleaching

Legal Events

Date Code Title Description
BB Publication of examined application
CD Patent refused following opposition
FC Application refused

Owner name: ENSO GUTZEIT OY