CA1273755A - Procede pour la preparation des pates papetieres chimiques en vue du blanchiment - Google Patents

Procede pour la preparation des pates papetieres chimiques en vue du blanchiment

Info

Publication number
CA1273755A
CA1273755A CA000493708A CA493708A CA1273755A CA 1273755 A CA1273755 A CA 1273755A CA 000493708 A CA000493708 A CA 000493708A CA 493708 A CA493708 A CA 493708A CA 1273755 A CA1273755 A CA 1273755A
Authority
CA
Canada
Prior art keywords
chlorine
pretreatment
dough
temperature
oxygen
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 - Lifetime
Application number
CA000493708A
Other languages
English (en)
French (fr)
Inventor
Dominique Lachenal
Christian De Choudens
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.)
Arkema France SA
Original Assignee
Atochem SA
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=9309092&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=CA1273755(A) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Atochem SA filed Critical Atochem SA
Application granted granted Critical
Publication of CA1273755A publication Critical patent/CA1273755A/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • D21C9/12—Bleaching ; Apparatus therefor with halogens or halogen-containing compounds
    • D21C9/14—Bleaching ; Apparatus therefor with halogens or halogen-containing compounds with ClO2 or chlorites
    • D21C9/144—Bleaching ; Apparatus therefor with halogens or halogen-containing compounds with ClO2 or chlorites with ClO2/Cl2 and other bleaching agents in a multistage process

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Paper (AREA)
  • Medicines Containing Antibodies Or Antigens For Use As Internal Diagnostic Agents (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
  • Nitrogen Condensed Heterocyclic Rings (AREA)
CA000493708A 1984-10-25 1985-10-24 Procede pour la preparation des pates papetieres chimiques en vue du blanchiment Expired - Lifetime CA1273755A (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8416518A FR2572431B1 (fr) 1984-10-25 1984-10-25 Procede pour la preparation des pates papetieres chimiques en vue du blanchiment.
FR8416518 1984-10-25

Publications (1)

Publication Number Publication Date
CA1273755A true CA1273755A (fr) 1990-09-11

Family

ID=9309092

Family Applications (1)

Application Number Title Priority Date Filing Date
CA000493708A Expired - Lifetime CA1273755A (fr) 1984-10-25 1985-10-24 Procede pour la preparation des pates papetieres chimiques en vue du blanchiment

Country Status (9)

Country Link
EP (1) EP0180529B2 (fi)
JP (1) JPS61102495A (fi)
AT (1) ATE35433T1 (fi)
AU (1) AU576394B2 (fi)
CA (1) CA1273755A (fi)
DE (2) DE180529T1 (fi)
ES (1) ES8606557A1 (fi)
FI (1) FI82726C (fi)
FR (1) FR2572431B1 (fi)

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1544216A (en) * 1921-08-11 1925-06-30 Donald J Campbell Molding apparatus
GB1262655A (en) * 1968-09-20 1972-02-02 Canadian Ind Bleaching of wood pulp
JPS51102103A (en) * 1975-03-05 1976-09-09 Nippon Parupu Kogyo Kk Ryusanenhoparupuno hyohakuhoho
DE2538673C2 (de) * 1975-08-30 1986-01-16 Degussa Ag, 6000 Frankfurt Bleichaufschluß von Zellstoff mit erheblich reduziertem Chloreinsatz
US4402788A (en) * 1982-04-26 1983-09-06 Champion International Corporation Process for bleaching wood pulp with hydrogen peroxide

Also Published As

Publication number Publication date
EP0180529B2 (fr) 1992-04-08
ES8606557A1 (es) 1986-04-01
ES548166A0 (es) 1986-04-01
FI854148A0 (fi) 1985-10-23
EP0180529B1 (fr) 1988-06-29
FR2572431A1 (fr) 1986-05-02
FI854148L (fi) 1986-04-26
EP0180529A1 (fr) 1986-05-07
DE180529T1 (de) 1986-12-18
FI82726B (fi) 1990-12-31
AU576394B2 (en) 1988-08-25
ATE35433T1 (de) 1988-07-15
DE3563548D1 (en) 1988-08-04
FR2572431B1 (fr) 1987-12-04
JPS61102495A (ja) 1986-05-21
AU4910885A (en) 1986-05-29
FI82726C (fi) 1991-04-10

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Legal Events

Date Code Title Description
MKLA Lapsed