FR2274727B1 - - Google Patents

Info

Publication number
FR2274727B1
FR2274727B1 FR7518080A FR7518080A FR2274727B1 FR 2274727 B1 FR2274727 B1 FR 2274727B1 FR 7518080 A FR7518080 A FR 7518080A FR 7518080 A FR7518080 A FR 7518080A FR 2274727 B1 FR2274727 B1 FR 2274727B1
Authority
FR
France
Legal status (The legal status 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 status listed.)
Expired
Application number
FR7518080A
Other versions
FR2274727A1 (fr
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
PPG Architectural Coatings Canada Inc
Original Assignee
Canadian Industries Ltd
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 GB2684674A external-priority patent/GB1434703A/en
Application filed by Canadian Industries Ltd filed Critical Canadian Industries Ltd
Publication of FR2274727A1 publication Critical patent/FR2274727A1/fr
Application granted granted Critical
Publication of FR2274727B1 publication Critical patent/FR2274727B1/fr
Granted legal-status Critical Current

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
    • D21C9/12—Bleaching ; Apparatus therefor with halogens or halogen-containing compounds
    • D21C9/14—Bleaching ; Apparatus therefor with halogens or halogen-containing compounds with ClO2 or chlorites
    • 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
    • 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
    • D21C9/12—Bleaching ; Apparatus therefor with halogens or halogen-containing compounds
    • D21C9/14—Bleaching ; Apparatus therefor with halogens or halogen-containing compounds with ClO2 or chlorites
    • D21C9/144—Bleaching ; Apparatus therefor with halogens or halogen-containing compounds with ClO2 or chlorites with ClO2/Cl2 and other bleaching agents in a multistage process

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Paper (AREA)
FR7518080A 1974-06-11 1975-06-10 Procede de renforcement d'une matiere lignocellulosique preparee mecaniquement Granted FR2274727A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB2584674A GB1505076A (en) 1974-06-11 1974-06-11 Strenghening of mechanical pulp by chemical treatment
GB2684674A GB1434703A (en) 1973-06-19 1974-06-18 Webbers for the textile industry

Publications (2)

Publication Number Publication Date
FR2274727A1 FR2274727A1 (fr) 1976-01-09
FR2274727B1 true FR2274727B1 (fr) 1979-03-30

Family

ID=26257907

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7518080A Granted FR2274727A1 (fr) 1974-06-11 1975-06-10 Procede de renforcement d'une matiere lignocellulosique preparee mecaniquement

Country Status (3)

Country Link
DE (1) DE2526085C3 (fr)
FR (1) FR2274727A1 (fr)
GB (1) GB1505076A (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2631545C (fr) * 2005-12-02 2014-08-19 Akzo Nobel N.V. Procede de production de pate a haut rendement
US8268122B2 (en) 2005-12-02 2012-09-18 Akzo Nobel N.V. Process of producing high-yield pulp
US7976677B2 (en) 2006-12-18 2011-07-12 International Paper Company Process of bleaching hardwood pulps in a D1 or D2 stage in a presence of a weak base
US7976676B2 (en) 2006-12-18 2011-07-12 International Paper Company Process of bleaching softwood pulps in a D1 or D2 stage in a presence of a weak base

Also Published As

Publication number Publication date
FR2274727A1 (fr) 1976-01-09
DE2526085A1 (de) 1976-01-02
AU8186375A (en) 1976-12-09
DE2526085C3 (de) 1980-06-12
DE2526085B2 (de) 1979-09-13
GB1505076A (en) 1978-03-22

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Legal Events

Date Code Title Description
ST Notification of lapse