BR8202532A - Processo para o alvejamento de celulose quimicamente produzida - Google Patents

Processo para o alvejamento de celulose quimicamente produzida

Info

Publication number
BR8202532A
BR8202532A BR8202532A BR8202532A BR8202532A BR 8202532 A BR8202532 A BR 8202532A BR 8202532 A BR8202532 A BR 8202532A BR 8202532 A BR8202532 A BR 8202532A BR 8202532 A BR8202532 A BR 8202532A
Authority
BR
Brazil
Prior art keywords
targeting
chemically produced
produced cellulose
cellulose
chemically
Prior art date
Application number
BR8202532A
Other languages
English (en)
Portuguese (pt)
Inventor
Rudolf Patt
Othar Kordsachia
David Long Kuo Wang
Original Assignee
Mannesmann Ag
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 Mannesmann Ag filed Critical Mannesmann Ag
Publication of BR8202532A publication Critical patent/BR8202532A/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
    • D21C9/1063—Bleaching ; Apparatus therefor with compounds not otherwise provided for, e.g. activated gases
    • 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

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Paper (AREA)
  • Polysaccharides And Polysaccharide Derivatives (AREA)
BR8202532A 1981-05-09 1982-05-03 Processo para o alvejamento de celulose quimicamente produzida BR8202532A (pt)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE3118384A DE3118384C1 (de) 1981-05-09 1981-05-09 Verfahren zum Bleichen von chemisch hergestelltem Zellstoff mit Ozon

Publications (1)

Publication Number Publication Date
BR8202532A true BR8202532A (pt) 1983-04-19

Family

ID=6131844

Family Applications (1)

Application Number Title Priority Date Filing Date
BR8202532A BR8202532A (pt) 1981-05-09 1982-05-03 Processo para o alvejamento de celulose quimicamente produzida

Country Status (9)

Country Link
JP (1) JPS57191388A (de)
AT (1) ATA167682A (de)
BR (1) BR8202532A (de)
DE (1) DE3118384C1 (de)
FI (1) FI821265A0 (de)
FR (1) FR2505377A1 (de)
NO (1) NO821525L (de)
SE (1) SE8202603L (de)
ZA (1) ZA823048B (de)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT404740B (de) * 1989-10-30 1999-02-25 Chemiefaser Lenzing Ag Verfahren zum chlorfreien bleichen von zellstoffen
DE4107356C1 (de) * 1991-03-08 1992-11-05 Acetocell Gmbh & Co Kg, 7162 Gschwend, De
US5364503A (en) * 1992-02-20 1994-11-15 Macmillan Bloedel Limited Nitric oxide treatment for ozone bleaching

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR432552A (fr) * 1911-07-25 1911-12-09 Claude Achilles Meygret Perfectionnements dans le blanchiment des fibres végétales, des pulpes végétales et leur équivalent
FR2158873A5 (en) * 1972-10-09 1973-06-15 Bourit Jean Pierre Bleaching of wood cellulose - using nitrogen oxides
GB1505070A (en) * 1974-06-11 1978-03-22 Canadian Ind Process for bleaching of lignocellulosic material
CA1070909A (en) * 1976-05-04 1980-02-05 Canadian Industries Limited Nitrogen dioxide-oxygen delignification
FI61215B (fi) * 1976-11-23 1982-02-26 Defibrator Ab Saett och anordning att kontinuerligt framstaella lignocellulosahaltiga fibermaterial

Also Published As

Publication number Publication date
NO821525L (no) 1982-11-10
FI821265A0 (fi) 1982-04-08
ATA167682A (de) 1985-04-15
FR2505377A1 (fr) 1982-11-12
DE3118384C1 (de) 1982-11-11
ZA823048B (en) 1983-03-30
SE8202603L (sv) 1982-11-10
JPS57191388A (en) 1982-11-25

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