SE9502962D0 - Blekning av massa - Google Patents

Blekning av massa

Info

Publication number
SE9502962D0
SE9502962D0 SE9502962A SE9502962A SE9502962D0 SE 9502962 D0 SE9502962 D0 SE 9502962D0 SE 9502962 A SE9502962 A SE 9502962A SE 9502962 A SE9502962 A SE 9502962A SE 9502962 D0 SE9502962 D0 SE 9502962D0
Authority
SE
Sweden
Prior art keywords
pulp
bleaching
chelating agent
mixing steps
admixed
Prior art date
Application number
SE9502962A
Other languages
English (en)
Other versions
SE9502962L (sv
SE504803C2 (sv
Inventor
Ulf Germgaard
Jonas Lindquist
Original Assignee
Sunds Defibrator Ind Ab
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=20399294&utm_source=***_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=SE9502962(D0) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Sunds Defibrator Ind Ab filed Critical Sunds Defibrator Ind Ab
Priority to SE9502962A priority Critical patent/SE504803C2/sv
Publication of SE9502962D0 publication Critical patent/SE9502962D0/sv
Priority to DE69611680T priority patent/DE69611680T2/de
Priority to AT96928765T priority patent/ATE198916T1/de
Priority to AU68399/96A priority patent/AU6839996A/en
Priority to CA002229212A priority patent/CA2229212A1/en
Priority to PT96928765T priority patent/PT846199E/pt
Priority to ES96928765T priority patent/ES2153593T3/es
Priority to BR9610199A priority patent/BR9610199A/pt
Priority to EP96928765A priority patent/EP0846199B1/en
Priority to PCT/SE1996/000996 priority patent/WO1997008380A1/en
Publication of SE9502962L publication Critical patent/SE9502962L/sv
Publication of SE504803C2 publication Critical patent/SE504803C2/sv
Priority to NO980753A priority patent/NO980753L/no

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
    • D21C9/1026—Other features in bleaching processes
    • D21C9/1042—Use of chelating agents

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Paper (AREA)
  • Chemical Or Physical Treatment Of Fibers (AREA)
  • Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
  • Cosmetics (AREA)
  • Detergent Compositions (AREA)
SE9502962A 1995-08-24 1995-08-24 Behandling av massa med komplexbildare i minst två blandningssteg utan mellanliggande tvätt SE504803C2 (sv)

Priority Applications (11)

Application Number Priority Date Filing Date Title
SE9502962A SE504803C2 (sv) 1995-08-24 1995-08-24 Behandling av massa med komplexbildare i minst två blandningssteg utan mellanliggande tvätt
PCT/SE1996/000996 WO1997008380A1 (en) 1995-08-24 1996-08-09 Treatment of pulp with chelating agent in at least two mixing steps without intermediate washing
EP96928765A EP0846199B1 (en) 1995-08-24 1996-08-09 Treatment of pulp with chelating agent in at least two mixing steps without intermediate washing
DE69611680T DE69611680T2 (de) 1995-08-24 1996-08-09 Zellstoffbehandlung mit einem komplexbildner in mindestens zwei mischungstufen ohne zwischenwäsche
AT96928765T ATE198916T1 (de) 1995-08-24 1996-08-09 Zellstoffbehandlung mit einem komplexbildner in mindestens zwei mischungstufen ohne zwischenwäsche
AU68399/96A AU6839996A (en) 1995-08-24 1996-08-09 Treatment of pulp with chelating agent in at least two mixing steps without intermediate washing
CA002229212A CA2229212A1 (en) 1995-08-24 1996-08-09 Treatment of pulp with chelating agent in at least two mixing steps without intermediate washing
PT96928765T PT846199E (pt) 1995-08-24 1996-08-09 Tratamento de pasta com agente quelante em pelo menos dois passos de mistura sem lavagem intermedia
ES96928765T ES2153593T3 (es) 1995-08-24 1996-08-09 Tratamiento de una pasta papelera con un agente quelatante en al menos dos etapas de mezclamiento sin lavado intermedio.
BR9610199A BR9610199A (pt) 1995-08-24 1996-08-09 Processo de alvejamento de polpa livre de cloro
NO980753A NO980753L (no) 1995-08-24 1998-02-23 Behandling av masse med chelatdanner i minst to trinn uten mellomvasking

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE9502962A SE504803C2 (sv) 1995-08-24 1995-08-24 Behandling av massa med komplexbildare i minst två blandningssteg utan mellanliggande tvätt

Publications (3)

Publication Number Publication Date
SE9502962D0 true SE9502962D0 (sv) 1995-08-24
SE9502962L SE9502962L (sv) 1997-02-25
SE504803C2 SE504803C2 (sv) 1997-04-28

Family

ID=20399294

Family Applications (1)

Application Number Title Priority Date Filing Date
SE9502962A SE504803C2 (sv) 1995-08-24 1995-08-24 Behandling av massa med komplexbildare i minst två blandningssteg utan mellanliggande tvätt

Country Status (11)

Country Link
EP (1) EP0846199B1 (sv)
AT (1) ATE198916T1 (sv)
AU (1) AU6839996A (sv)
BR (1) BR9610199A (sv)
CA (1) CA2229212A1 (sv)
DE (1) DE69611680T2 (sv)
ES (1) ES2153593T3 (sv)
NO (1) NO980753L (sv)
PT (1) PT846199E (sv)
SE (1) SE504803C2 (sv)
WO (1) WO1997008380A1 (sv)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE508239C2 (sv) * 1997-01-03 1998-09-21 Sunds Defibrator Ind Ab Behandling av massa med komplexbildare i minst ett blandningssteg, utan användning av blektorn
ES2456271T3 (es) 2008-06-20 2014-04-21 International Paper Company Composición y hoja de registro con propiedades ópticas mejoradas

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0402335B2 (en) * 1989-06-06 2001-03-14 Eka Chemicals AB Process for bleaching lignocellulose-containing pulps
SE9201477L (sv) * 1992-05-11 1993-06-28 Kamyr Ab Saett vid blekning av massa utan anvaendning av klorkemikalier
SE502665C2 (sv) * 1993-06-11 1995-12-04 Kvaerner Pulping Tech Sätt och reaktor för ozonblekning
SE501836C2 (sv) * 1993-09-21 1995-05-22 Sunds Defibrator Ind Ab Blekning av kemisk massa varvid massan behandlas med komplexbildare före och efter ett ozonsteg

Also Published As

Publication number Publication date
EP0846199B1 (en) 2001-01-24
DE69611680D1 (de) 2001-03-01
SE9502962L (sv) 1997-02-25
ES2153593T3 (es) 2001-03-01
PT846199E (pt) 2001-06-29
AU6839996A (en) 1997-03-19
NO980753D0 (no) 1998-02-23
DE69611680T2 (de) 2001-05-10
CA2229212A1 (en) 1997-03-06
WO1997008380A1 (en) 1997-03-06
BR9610199A (pt) 1998-08-04
SE504803C2 (sv) 1997-04-28
NO980753L (no) 1998-02-24
ATE198916T1 (de) 2001-02-15
EP0846199A1 (en) 1998-06-10

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Legal Events

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