FR2071947A1 - - Google Patents

Info

Publication number
FR2071947A1
FR2071947A1 FR7045905A FR7045905A FR2071947A1 FR 2071947 A1 FR2071947 A1 FR 2071947A1 FR 7045905 A FR7045905 A FR 7045905A FR 7045905 A FR7045905 A FR 7045905A FR 2071947 A1 FR2071947 A1 FR 2071947A1
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.)
Granted
Application number
FR7045905A
Other languages
French (fr)
Other versions
FR2071947B1 (en
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 (en)

Applications Claiming Priority (1)

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

Publications (2)

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

Family

ID=4086085

Family Applications (1)

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

Country Status (10)

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

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2416297A1 (en) * 1978-01-31 1979-08-31 Europeen Cellulose Three-stage paper pulp bleaching - giving high whiteness level, by treating with chlorine, hypochlorite or peroxide oxidant and chlorine di:oxide
FR2432574A1 (en) * 1978-08-01 1980-02-29 Europeen Cellulose PROCESS FOR BLEACHING PAPER PULP
FR2507639A1 (en) * 1981-06-10 1982-12-17 Aga Ab Lignin extn. from and bleaching of cellulose pulp - involving use of chlorinated chemicals, alkali and oxygen
FR2670513A1 (en) * 1990-12-18 1992-06-19 Centre Tech Ind Papier Process for bleaching chemical paper pulps by treatment with oxygen in two stages

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0088073A4 (en) * 1981-09-04 1984-01-09 Weyerhaeuser Co Method of treating pulp with plural oxygen stages.
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
SE9401628L (en) * 1994-05-10 1995-11-11 Stora Kopparbergs Bergslags Ab Oxygen delignification procedure

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1310248A (en) * 1963-03-06
FR1404605A (en) * 1964-05-22 1965-07-02 Air Liquide Improvement in delignification of chemical cellulose pulps
FR2025415A1 (en) * 1968-12-05 1970-09-11 Mo Och Domsjoe Ab

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1310248A (en) * 1963-03-06
FR1404605A (en) * 1964-05-22 1965-07-02 Air Liquide Improvement in delignification of chemical cellulose pulps
FR2025415A1 (en) * 1968-12-05 1970-09-11 Mo Och Domsjoe Ab

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2416297A1 (en) * 1978-01-31 1979-08-31 Europeen Cellulose Three-stage paper pulp bleaching - giving high whiteness level, by treating with chlorine, hypochlorite or peroxide oxidant and chlorine di:oxide
FR2432574A1 (en) * 1978-08-01 1980-02-29 Europeen Cellulose PROCESS FOR BLEACHING PAPER PULP
FR2507639A1 (en) * 1981-06-10 1982-12-17 Aga Ab Lignin extn. from and bleaching of cellulose pulp - involving use of chlorinated chemicals, alkali and oxygen
FR2670513A1 (en) * 1990-12-18 1992-06-19 Centre Tech Ind Papier Process for bleaching chemical paper pulps by treatment with oxygen in two stages

Also Published As

Publication number Publication date
ZA708076B (en) 1972-07-26
NO129262B (en) 1974-03-18
GB1342580A (en) 1974-01-03
SE369746B (en) 1974-09-16
SU366622A3 (en) 1973-01-16
DE2061526B2 (en) 1974-09-19
FI49994C (en) 1975-11-10
DE2061526C3 (en) 1975-06-05
DE2061526A1 (en) 1971-06-24
FR2071947B1 (en) 1974-04-26
CA897361A (en) 1972-04-11
FI49994B (en) 1975-07-31
AT302013B (en) 1972-09-25

Similar Documents

Publication Publication Date Title
AU2270770A (en)
AU465413B2 (en)
AU429630B2 (en)
AU450150B2 (en)
CS151559B2 (en)
SU366622A3 (en)
AU2355770A (en)
AU442375B2 (en)
AU470301B1 (en)
AU427401B2 (en)
AU442380B2 (en)
AU410358B2 (en)
AU428131B2 (en)
AU428074B2 (en)
AU425297B2 (en)
AU438128B2 (en)
AU470661B1 (en)
AU442285B2 (en)
AU442322B2 (en)
AU442357B2 (en)
AU428129B2 (en)
AU414607B2 (en)
AU442463B2 (en)
AU442535B2 (en)
AU442554B2 (en)

Legal Events

Date Code Title Description
ST Notification of lapse