CA897361A - Oxygen bleaching process - Google Patents

Oxygen bleaching process

Info

Publication number
CA897361A
CA897361A CA897361A CA897361DA CA897361A CA 897361 A CA897361 A CA 897361A CA 897361 A CA897361 A CA 897361A CA 897361D A CA897361D A CA 897361DA CA 897361 A CA897361 A CA 897361A
Authority
CA
Canada
Prior art keywords
bleaching process
oxygen bleaching
oxygen
bleaching
Prior art date
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
CA897361A
Other languages
English (en)
Inventor
E. Mallett Samuel
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
Application filed by Canadian Industries Ltd filed Critical Canadian Industries Ltd
Application granted granted Critical
Publication of CA897361A publication Critical patent/CA897361A/en
Expired 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
    • D21C9/1057—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)
CA897361A 1969-12-19 1969-12-19 Oxygen bleaching process Expired CA897361A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA70450 1969-12-19

Publications (1)

Publication Number Publication Date
CA897361A true CA897361A (en) 1972-04-11

Family

ID=4086085

Family Applications (1)

Application Number Title Priority Date Filing Date
CA897361A Expired CA897361A (en) 1969-12-19 1969-12-19 Oxygen bleaching process

Country Status (10)

Country Link
AT (1) AT302013B (de)
CA (1) CA897361A (de)
DE (1) DE2061526C3 (de)
FI (1) FI49994C (de)
FR (1) FR2071947B1 (de)
GB (1) GB1342580A (de)
NO (1) NO129262B (de)
SE (1) SE369746B (de)
SU (1) SU366622A3 (de)
ZA (1) ZA708076B (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997017489A1 (en) * 1994-05-10 1997-05-15 Stora Kopparbergs Bergslags Ab Process for oxygen delignification

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2416297A1 (fr) * 1978-01-31 1979-08-31 Europeen Cellulose Procede anti-polluant de blanchiment de pate a papier
FR2432574A1 (fr) * 1978-08-01 1980-02-29 Europeen Cellulose Procede de blanchiment de pate a papier
FI67241B (fi) * 1981-06-10 1984-10-31 Aga Ab Saett foer blekning av cellulosahaltiga material
BR8109039A (pt) * 1981-09-04 1983-09-06 Weyerhaeuser Co Tratamento de polpa com oxigenio
NZ237019A (en) * 1990-02-19 1992-11-25 Amcor Ltd Bleaching paper pulp by initially treating with oxygen and/or hydrogen peroxide and subsequently treating with a bleaching agent without intervening washing steps
FR2670513B1 (fr) * 1990-12-18 1993-02-19 Centre Tech Ind Papier Procede de blanchiment des pates papetieres chimiques par traitement a l'oxygene en deux stades.

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1310248A (de) * 1963-03-06
FR1404605A (fr) * 1964-05-22 1965-07-02 Air Liquide Perfectionnement à la délignification des pâtes chimiques de cellulose
SE334286B (de) * 1968-12-05 1971-04-19 Mo Och Domsjoe Ab

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997017489A1 (en) * 1994-05-10 1997-05-15 Stora Kopparbergs Bergslags Ab Process for oxygen delignification

Also Published As

Publication number Publication date
DE2061526A1 (de) 1971-06-24
SE369746B (de) 1974-09-16
AT302013B (de) 1972-09-25
DE2061526C3 (de) 1975-06-05
FI49994C (fi) 1975-11-10
NO129262B (de) 1974-03-18
ZA708076B (en) 1972-07-26
FR2071947A1 (de) 1971-09-24
SU366622A3 (de) 1973-01-16
DE2061526B2 (de) 1974-09-19
FI49994B (de) 1975-07-31
FR2071947B1 (de) 1974-04-26
GB1342580A (en) 1974-01-03

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