PT83649B - Processo para o branqueamento de pastas de papel qimicas - Google Patents

Processo para o branqueamento de pastas de papel qimicas

Info

Publication number
PT83649B
PT83649B PT83649A PT8364986A PT83649B PT 83649 B PT83649 B PT 83649B PT 83649 A PT83649 A PT 83649A PT 8364986 A PT8364986 A PT 8364986A PT 83649 B PT83649 B PT 83649B
Authority
PT
Portugal
Prior art keywords
pulp
alkaline extraction
treatment
qimicas
whiting
Prior art date
Application number
PT83649A
Other languages
English (en)
Portuguese (pt)
Other versions
PT83649A (fr
Inventor
Lucien Bourson
Original Assignee
Atochem
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=9324477&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=PT83649(B) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Atochem filed Critical Atochem
Publication of PT83649A publication Critical patent/PT83649A/pt
Publication of PT83649B publication Critical patent/PT83649B/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
PT83649A 1985-10-30 1986-10-29 Processo para o branqueamento de pastas de papel qimicas PT83649B (pt)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8516332A FR2589494B1 (fr) 1985-10-30 1985-10-30 Procede de blanchiment de pates papetieres chimiques

Publications (2)

Publication Number Publication Date
PT83649A PT83649A (fr) 1986-11-01
PT83649B true PT83649B (pt) 1989-05-31

Family

ID=9324477

Family Applications (1)

Application Number Title Priority Date Filing Date
PT83649A PT83649B (pt) 1985-10-30 1986-10-29 Processo para o branqueamento de pastas de papel qimicas

Country Status (11)

Country Link
EP (1) EP0222674B1 (de)
JP (1) JPS62141188A (de)
AT (1) ATE48291T1 (de)
AU (1) AU603556B2 (de)
DE (2) DE222674T1 (de)
ES (1) ES2000019B3 (de)
FI (1) FI85294B (de)
FR (1) FR2589494B1 (de)
NO (1) NO864319L (de)
PT (1) PT83649B (de)
ZA (1) ZA868275B (de)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4031597A1 (de) * 1990-10-05 1992-04-09 Sueddeutsche Kalkstickstoff Verfahren zur chlorarmen bleiche und delignifizierung von zellstoff
US6569284B1 (en) * 1996-09-24 2003-05-27 International Paper Company Elemental-chlorine-free bleaching process having an initial Eo or Eop stage
FR3062138B1 (fr) 2017-01-23 2019-06-07 Centre Technique De L'industrie Des Papiers, Cartons Et Celluloses Procede de blanchiment d'une pate a papier

Also Published As

Publication number Publication date
ATE48291T1 (de) 1989-12-15
EP0222674A1 (de) 1987-05-20
EP0222674B1 (de) 1989-11-29
AU6449286A (en) 1987-05-07
DE3667184D1 (de) 1990-01-04
FI864411A (fi) 1987-05-01
ES2000019B3 (es) 1990-03-16
AU603556B2 (en) 1990-11-22
ES2000019A4 (es) 1987-09-16
FI85294B (fi) 1991-12-13
NO864319L (no) 1987-05-04
FI864411A0 (fi) 1986-10-29
NO864319D0 (no) 1986-10-29
DE222674T1 (de) 1987-10-15
FR2589494A1 (fr) 1987-05-07
JPH0116958B2 (de) 1989-03-28
FR2589494B1 (fr) 1988-07-29
PT83649A (fr) 1986-11-01
JPS62141188A (ja) 1987-06-24
ZA868275B (en) 1987-06-24

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Legal Events

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