FI945202A - Blekning av kemisk massa - Google Patents

Blekning av kemisk massa Download PDF

Info

Publication number
FI945202A
FI945202A FI945202A FI945202A FI945202A FI 945202 A FI945202 A FI 945202A FI 945202 A FI945202 A FI 945202A FI 945202 A FI945202 A FI 945202A FI 945202 A FI945202 A FI 945202A
Authority
FI
Finland
Prior art keywords
bleaching
chemical pulp
pulp
chemical
Prior art date
Application number
FI945202A
Other languages
English (en)
Finnish (fi)
Other versions
FI945202A0 (sv
Inventor
Lawrence J Guilbault
Maurice Hache
David C Munroe
David L K Wang
Graziella Teodorescu
Original Assignee
Morton Int Inc
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
Application filed by Morton Int Inc filed Critical Morton Int Inc
Publication of FI945202A0 publication Critical patent/FI945202A0/sv
Publication of FI945202A publication Critical patent/FI945202A/sv

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
    • D21C9/1084—Bleaching ; Apparatus therefor with reducing compounds

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Chemical & Material Sciences (AREA)
  • Biochemistry (AREA)
  • Microbiology (AREA)
  • Paper (AREA)
FI945202A 1993-11-04 1994-11-04 Blekning av kemisk massa FI945202A (sv)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US14811893A 1993-11-04 1993-11-04

Publications (2)

Publication Number Publication Date
FI945202A0 FI945202A0 (sv) 1994-11-04
FI945202A true FI945202A (sv) 1995-05-05

Family

ID=22524363

Family Applications (1)

Application Number Title Priority Date Filing Date
FI945202A FI945202A (sv) 1993-11-04 1994-11-04 Blekning av kemisk massa

Country Status (2)

Country Link
EP (1) EP0652321B1 (sv)
FI (1) FI945202A (sv)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9932709B2 (en) 2013-03-15 2018-04-03 Ecolab Usa Inc. Processes and compositions for brightness improvement in paper production
AU2012291873B2 (en) * 2011-07-29 2016-03-10 Cambridge Epigenetix Limited Methods for detection of nucleotide modification
EP2925883B1 (en) 2012-11-30 2018-03-28 Cambridge Epigenetix Limited Oxidising agent for modified nucleotides
BR102014027199B1 (pt) * 2014-07-14 2022-10-04 Nalco Company Método para aprimorar a fabricação de polpa de soda ou kraft

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4008893A1 (de) * 1990-03-20 1991-09-26 Call Hans Peter Verfahren zum enzymatischen bleichen von zellstoffen
BE1004630A3 (fr) * 1990-10-17 1992-12-22 Interox Internat Sa Procede pour la preservation des caracteristiques de resistance mecanique des pates a papier chimiques.
FR2692917A1 (fr) * 1992-06-30 1993-12-31 Air Liquide Procédé de blanchiment d'une pâte papetière chimique.

Also Published As

Publication number Publication date
EP0652321A1 (en) 1995-05-10
EP0652321B1 (en) 1998-01-21
FI945202A0 (sv) 1994-11-04

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Legal Events

Date Code Title Description
GB Transfer or assigment of application

Owner name: MORTON INTERNATIONAL, INC.