NO980753D0 - Behandling av masse med chelatdanner i minst to trinn uten mellomvasking - Google Patents

Behandling av masse med chelatdanner i minst to trinn uten mellomvasking

Info

Publication number
NO980753D0
NO980753D0 NO980753A NO980753A NO980753D0 NO 980753 D0 NO980753 D0 NO 980753D0 NO 980753 A NO980753 A NO 980753A NO 980753 A NO980753 A NO 980753A NO 980753 D0 NO980753 D0 NO 980753D0
Authority
NO
Norway
Prior art keywords
pulp
chelating agent
steps
treatment
intermediate washing
Prior art date
Application number
NO980753A
Other languages
English (en)
Other versions
NO980753L (no
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=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=NO980753(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
Publication of NO980753D0 publication Critical patent/NO980753D0/no
Publication of NO980753L publication Critical 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)
  • Cosmetics (AREA)
  • Chemical Or Physical Treatment Of Fibers (AREA)
  • Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
  • Detergent Compositions (AREA)
NO980753A 1995-08-24 1998-02-23 Behandling av masse med chelatdanner i minst to trinn uten mellomvasking NO980753L (no)

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 (2)

Publication Number Publication Date
NO980753D0 true NO980753D0 (no) 1998-02-23
NO980753L NO980753L (no) 1998-02-24

Family

ID=20399294

Family Applications (1)

Application Number Title Priority Date Filing Date
NO980753A NO980753L (no) 1995-08-24 1998-02-23 Behandling av masse med chelatdanner i minst to trinn uten mellomvasking

Country Status (11)

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

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
CN102076911B (zh) 2008-06-20 2013-03-13 国际纸业公司 具有改良光学特性的组合物和记录片材

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE69004492T3 (de) * 1989-06-06 2001-11-15 Eka Nobel Ab 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
SE504803C2 (sv) 1997-04-28
ATE198916T1 (de) 2001-02-15
EP0846199A1 (en) 1998-06-10
WO1997008380A1 (en) 1997-03-06
NO980753L (no) 1998-02-24
BR9610199A (pt) 1998-08-04
SE9502962L (sv) 1997-02-25
ES2153593T3 (es) 2001-03-01
DE69611680D1 (de) 2001-03-01
PT846199E (pt) 2001-06-29
AU6839996A (en) 1997-03-19
EP0846199B1 (en) 2001-01-24
SE9502962D0 (sv) 1995-08-24
CA2229212A1 (en) 1997-03-06
DE69611680T2 (de) 2001-05-10

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Legal Events

Date Code Title Description
FC2A Withdrawal, rejection or dismissal of laid open patent application