BR9610199A - Processo de alvejamento de polpa livre de cloro - Google Patents

Processo de alvejamento de polpa livre de cloro

Info

Publication number
BR9610199A
BR9610199A BR9610199A BR9610199A BR9610199A BR 9610199 A BR9610199 A BR 9610199A BR 9610199 A BR9610199 A BR 9610199A BR 9610199 A BR9610199 A BR 9610199A BR 9610199 A BR9610199 A BR 9610199A
Authority
BR
Brazil
Prior art keywords
chlorine
bleaching process
pulp bleaching
pulp
free pulp
Prior art date
Application number
BR9610199A
Other languages
English (en)
Inventor
Ulf Germgard
Jonas Lindquist
Original Assignee
Sunds Defibrador 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=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=BR9610199(A) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Sunds Defibrador Ind Ab filed Critical Sunds Defibrador Ind Ab
Publication of BR9610199A publication Critical patent/BR9610199A/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
    • D21C9/1026—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)
BR9610199A 1995-08-24 1996-08-09 Processo de alvejamento de polpa livre de cloro BR9610199A (pt)

Applications Claiming Priority (2)

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

Publications (1)

Publication Number Publication Date
BR9610199A true BR9610199A (pt) 1998-08-04

Family

ID=20399294

Family Applications (1)

Application Number Title Priority Date Filing Date
BR9610199A BR9610199A (pt) 1995-08-24 1996-08-09 Processo de alvejamento de polpa livre de cloro

Country Status (11)

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

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
CA2728278C (en) 2008-06-20 2016-06-28 Zheng Tan Composition and recording sheet with improved optical properties

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE402335T1 (de) * 1989-06-06 1992-04-09 Eka Nobel Ab, Surte Verfahren zum bleichen von lignocellulose enthaltenden zellstoffen.
SE469387B (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
WO1997008380A1 (en) 1997-03-06
EP0846199A1 (en) 1998-06-10
ATE198916T1 (de) 2001-02-15
NO980753L (no) 1998-02-24
EP0846199B1 (en) 2001-01-24
DE69611680T2 (de) 2001-05-10
SE9502962D0 (sv) 1995-08-24
NO980753D0 (no) 1998-02-23
CA2229212A1 (en) 1997-03-06
SE9502962L (sv) 1997-02-25
AU6839996A (en) 1997-03-19
ES2153593T3 (es) 2001-03-01
SE504803C2 (sv) 1997-04-28
DE69611680D1 (de) 2001-03-01
PT846199E (pt) 2001-06-29

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Legal Events

Date Code Title Description
FF Decision: intention to grant
FA11 Dismissal: dismissal - article 38, par. 2 of industrial property law