FR2274729B1 - - Google Patents

Info

Publication number
FR2274729B1
FR2274729B1 FR7518079A FR7518079A FR2274729B1 FR 2274729 B1 FR2274729 B1 FR 2274729B1 FR 7518079 A FR7518079 A FR 7518079A FR 7518079 A FR7518079 A FR 7518079A FR 2274729 B1 FR2274729 B1 FR 2274729B1
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
FR7518079A
Other versions
FR2274729A1 (fr
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 FR2274729A1 publication Critical patent/FR2274729A1/fr
Application granted granted Critical
Publication of FR2274729B1 publication Critical patent/FR2274729B1/fr
Granted 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
    • D21C9/1063—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)
FR7518079A 1974-06-11 1975-06-10 Procede de blanchiment de matieres lignocellulosiques Granted FR2274729A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB25845/74A GB1505070A (en) 1974-06-11 1974-06-11 Process for bleaching of lignocellulosic material

Publications (2)

Publication Number Publication Date
FR2274729A1 FR2274729A1 (fr) 1976-01-09
FR2274729B1 true FR2274729B1 (fr) 1978-09-22

Family

ID=10234280

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7518079A Granted FR2274729A1 (fr) 1974-06-11 1975-06-10 Procede de blanchiment de matieres lignocellulosiques

Country Status (10)

Country Link
JP (1) JPS522003B2 (fr)
BR (1) BR7503680A (fr)
CA (1) CA1045759A (fr)
DE (1) DE2526084C2 (fr)
ES (1) ES438433A1 (fr)
FI (1) FI751734A (fr)
FR (1) FR2274729A1 (fr)
GB (1) GB1505070A (fr)
NO (1) NO147761C (fr)
SE (1) SE7506646L (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1070909A (fr) * 1976-05-04 1980-02-05 Canadian Industries Limited Delignification au bioxyde d'azote et a l'oxygene
SE421938B (sv) * 1980-06-05 1982-02-08 Mo Och Domsjoe Ab Forfarande for behandling av cellulosamassa med kveveoxider fore syrgasblekning
SE425674B (sv) * 1981-03-23 1982-10-25 Mo Och Domsjoe Ab Forfarande for delignifiering av cellulosamassa med kvevedioxid och syrgas
DE3118384C1 (de) * 1981-05-09 1982-11-11 Mannesmann AG, 4000 Düsseldorf Verfahren zum Bleichen von chemisch hergestelltem Zellstoff mit Ozon
SE448006B (sv) * 1981-09-21 1987-01-12 Mo Och Domsjoe Ab Forfarande for blekning av cellulosamassa innefattande ett aktiveringssteg med kveveoxider
SE450393B (sv) * 1981-10-27 1987-06-22 Mo Och Domsjoe Ab Forfarande for behandling av ved med kveveoxider och syrgas fore sulfatkokning

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE212838C (fr) *
DE204460C (fr) *
DE391713C (de) * 1922-12-12 1924-03-11 Paul Krais Dr Verfahren zum Aufschliessen von Stroh, Schilf u. dgl.

Also Published As

Publication number Publication date
FR2274729A1 (fr) 1976-01-09
GB1505070A (en) 1978-03-22
CA1045759A (fr) 1979-01-09
FI751734A (fr) 1975-12-12
NO147761C (no) 1983-06-08
SE7506646L (sv) 1975-12-12
JPS5132802A (fr) 1976-03-19
DE2526084A1 (de) 1976-01-02
DE2526084C2 (de) 1981-11-26
AU8201275A (en) 1976-12-16
BR7503680A (pt) 1976-06-29
NO147761B (no) 1983-02-28
JPS522003B2 (fr) 1977-01-19
NO752025L (fr) 1975-12-12
ES438433A1 (es) 1977-05-16

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Legal Events

Date Code Title Description
ST Notification of lapse