FR2071947B1 - - Google Patents

Info

Publication number
FR2071947B1
FR2071947B1 FR7045905A FR7045905A FR2071947B1 FR 2071947 B1 FR2071947 B1 FR 2071947B1 FR 7045905 A FR7045905 A FR 7045905A FR 7045905 A FR7045905 A FR 7045905A FR 2071947 B1 FR2071947 B1 FR 2071947B1
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
FR7045905A
Other languages
French (fr)
Other versions
FR2071947A1 (de
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
Publication of FR2071947A1 publication Critical patent/FR2071947A1/fr
Application granted granted Critical
Publication of FR2071947B1 publication Critical patent/FR2071947B1/fr
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)
FR7045905A 1969-12-19 1970-12-18 Expired FR2071947B1 (de)

Applications Claiming Priority (1)

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

Publications (2)

Publication Number Publication Date
FR2071947A1 FR2071947A1 (de) 1971-09-24
FR2071947B1 true FR2071947B1 (de) 1974-04-26

Family

ID=4086085

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7045905A Expired FR2071947B1 (de) 1969-12-19 1970-12-18

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)

Families Citing this family (7)

* 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.
SE9401628L (sv) * 1994-05-10 1995-11-11 Stora Kopparbergs Bergslags Ab Förfarande vid syrgasdelignifiering

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

Also Published As

Publication number Publication date
NO129262B (de) 1974-03-18
SE369746B (de) 1974-09-16
GB1342580A (en) 1974-01-03
SU366622A3 (de) 1973-01-16
ZA708076B (en) 1972-07-26
FR2071947A1 (de) 1971-09-24
FI49994B (de) 1975-07-31
AT302013B (de) 1972-09-25
CA897361A (en) 1972-04-11
FI49994C (fi) 1975-11-10
DE2061526A1 (de) 1971-06-24
DE2061526B2 (de) 1974-09-19
DE2061526C3 (de) 1975-06-05

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Legal Events

Date Code Title Description
ST Notification of lapse