FI48859C - Menetelmä lignoselluloosa-aineen, kuten puumassan valkaisemiseksi. - Google Patents

Menetelmä lignoselluloosa-aineen, kuten puumassan valkaisemiseksi.

Info

Publication number
FI48859C
FI48859C FI692692A FI269269A FI48859C FI 48859 C FI48859 C FI 48859C FI 692692 A FI692692 A FI 692692A FI 269269 A FI269269 A FI 269269A FI 48859 C FI48859 C FI 48859C
Authority
FI
Finland
Prior art keywords
bleaching
wood pulp
lignocellulosic material
lignocellulosic
pulp
Prior art date
Application number
FI692692A
Other languages
English (en)
Finnish (fi)
Swedish (sv)
Other versions
FI48859B (de
Inventor
Douglas Haig Andrews
Samuel Edward Mallett
Original Assignee
Canadian Ind
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 Canadian Ind filed Critical Canadian Ind
Publication of FI48859B publication Critical patent/FI48859B/fi
Application granted granted Critical
Publication of FI48859C publication Critical patent/FI48859C/fi

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

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Paper (AREA)
FI692692A 1968-09-20 1969-09-19 Menetelmä lignoselluloosa-aineen, kuten puumassan valkaisemiseksi. FI48859C (fi)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB44904/68A GB1262655A (en) 1968-09-20 1968-09-20 Bleaching of wood pulp

Publications (2)

Publication Number Publication Date
FI48859B FI48859B (de) 1974-09-30
FI48859C true FI48859C (fi) 1975-01-10

Family

ID=10435190

Family Applications (1)

Application Number Title Priority Date Filing Date
FI692692A FI48859C (fi) 1968-09-20 1969-09-19 Menetelmä lignoselluloosa-aineen, kuten puumassan valkaisemiseksi.

Country Status (9)

Country Link
AT (1) AT292442B (de)
BR (1) BR6912545D0 (de)
DE (1) DE1947931C3 (de)
FI (1) FI48859C (de)
FR (1) FR2018562A1 (de)
GB (1) GB1262655A (de)
NO (1) NO131761C (de)
SE (1) SE364322B (de)
ZA (1) ZA696595B (de)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2572431B1 (fr) * 1984-10-25 1987-12-04 Centre Tech Ind Papier Procede pour la preparation des pates papetieres chimiques en vue du blanchiment.
SE9900425L (sv) * 1999-02-09 2000-09-04 Skogsind Tekn Foskningsinst Förfarande för delignifiering av massa
CN118308895A (zh) * 2015-09-30 2024-07-09 伊梅里斯矿物有限公司 纸浆漂白或纸浆脱木素方法

Also Published As

Publication number Publication date
FR2018562A1 (de) 1970-05-29
DE1947931A1 (de) 1970-03-26
FI48859B (de) 1974-09-30
NO131761C (de) 1977-03-22
DE1947931C3 (de) 1975-06-26
ZA696595B (en) 1971-04-28
AT292442B (de) 1971-08-25
GB1262655A (en) 1972-02-02
SE364322B (de) 1974-02-18
NO131761B (de) 1975-04-14
DE1947931B2 (de) 1974-11-14
BR6912545D0 (pt) 1973-05-03

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