FI970304A - Method for bleaching high yield or recycled pulp - Google Patents

Method for bleaching high yield or recycled pulp Download PDF

Info

Publication number
FI970304A
FI970304A FI970304A FI970304A FI970304A FI 970304 A FI970304 A FI 970304A FI 970304 A FI970304 A FI 970304A FI 970304 A FI970304 A FI 970304A FI 970304 A FI970304 A FI 970304A
Authority
FI
Finland
Prior art keywords
high yield
recycled pulp
bleaching high
bleaching
pulp
Prior art date
Application number
FI970304A
Other languages
Finnish (fi)
Swedish (sv)
Other versions
FI105932B (en
FI970304A0 (en
Inventor
Jukka Jaekaerae
Aarto Paren
Reijo Aksela
Ilkka Renvall
Original Assignee
Kemira Chemicals 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
Priority claimed from FI962261A external-priority patent/FI112075B/en
Application filed by Kemira Chemicals Oy filed Critical Kemira Chemicals Oy
Priority to FI970304A priority Critical patent/FI105932B/en
Publication of FI970304A0 publication Critical patent/FI970304A0/en
Priority to PCT/FI1997/000334 priority patent/WO1997045585A1/en
Priority to AU29645/97A priority patent/AU2964597A/en
Publication of FI970304A publication Critical patent/FI970304A/en
Application granted granted Critical
Publication of FI105932B publication Critical patent/FI105932B/en

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)
FI970304A 1996-05-30 1997-01-24 A process for bleaching high yield or recycled pulp FI105932B (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
FI970304A FI105932B (en) 1996-05-30 1997-01-24 A process for bleaching high yield or recycled pulp
PCT/FI1997/000334 WO1997045585A1 (en) 1996-05-30 1997-05-30 Process for the bleaching of high yield pulp or recycled paper pulp
AU29645/97A AU2964597A (en) 1996-05-30 1997-05-30 Process for the bleaching of high yield pulp or recycled paper pulp

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
FI962261A FI112075B (en) 1996-05-30 1996-05-30 N-bis or N-tris [(1,2-dicarboxyl-ethoxy) -ethyl] amine derivatives, preparation and use thereof
FI962261 1996-05-30
FI970304 1997-01-24
FI970304A FI105932B (en) 1996-05-30 1997-01-24 A process for bleaching high yield or recycled pulp

Publications (3)

Publication Number Publication Date
FI970304A0 FI970304A0 (en) 1997-01-24
FI970304A true FI970304A (en) 1997-12-01
FI105932B FI105932B (en) 2000-10-31

Family

ID=26160165

Family Applications (1)

Application Number Title Priority Date Filing Date
FI970304A FI105932B (en) 1996-05-30 1997-01-24 A process for bleaching high yield or recycled pulp

Country Status (3)

Country Link
AU (1) AU2964597A (en)
FI (1) FI105932B (en)
WO (1) WO1997045585A1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI106258B (en) 1998-03-09 2000-12-29 Kemira Chemicals Oy Processes for the preparation of an N-bis- [2- (1,2-dicarboxyethoxy) ethyl] amine derivative and products obtained by the methods and uses thereof
ES2456271T3 (en) 2008-06-20 2014-04-21 International Paper Company Composition and registration sheet with improved optical properties
FI122829B (en) * 2010-06-02 2012-07-31 Kemira Oyj Process for preparing a mixture of chelating agents

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1340348C (en) * 1989-03-23 1999-01-26 Michel Barbe Bleaching process for the production of high bright pulps
DE4340043A1 (en) * 1993-11-24 1995-06-01 Henkel Kgaa Use of nitrogen-containing complexing agents in wood pulp bleaching
CA2173824A1 (en) * 1995-04-27 1996-10-28 Brian A. Parker Ethylenediaminetriacetic acid and salts thereof as chelating agents in pulp bleaching

Also Published As

Publication number Publication date
FI105932B (en) 2000-10-31
FI970304A0 (en) 1997-01-24
AU2964597A (en) 1998-01-05
WO1997045585A1 (en) 1997-12-04

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Legal Events

Date Code Title Description
MA Patent expired