FI82726C - Foerfarande foer framstaellning av kemiska pappersmassor foer blekning. - Google Patents

Foerfarande foer framstaellning av kemiska pappersmassor foer blekning. Download PDF

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Publication number
FI82726C
FI82726C FI854148A FI854148A FI82726C FI 82726 C FI82726 C FI 82726C FI 854148 A FI854148 A FI 854148A FI 854148 A FI854148 A FI 854148A FI 82726 C FI82726 C FI 82726C
Authority
FI
Finland
Prior art keywords
chlorine
pulp
oxygen
treatment
temperature
Prior art date
Application number
FI854148A
Other languages
English (en)
Finnish (fi)
Swedish (sv)
Other versions
FI854148A0 (fi
FI854148L (fi
FI82726B (fi
Inventor
Dominique Lachenal
Choudens Christian De
Original Assignee
Atochem
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=FI82726(C) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Atochem filed Critical Atochem
Publication of FI854148A0 publication Critical patent/FI854148A0/fi
Publication of FI854148L publication Critical patent/FI854148L/fi
Publication of FI82726B publication Critical patent/FI82726B/fi
Application granted granted Critical
Publication of FI82726C publication Critical patent/FI82726C/fi

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)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
  • Nitrogen Condensed Heterocyclic Rings (AREA)
  • Medicines Containing Antibodies Or Antigens For Use As Internal Diagnostic Agents (AREA)
FI854148A 1984-10-25 1985-10-23 Foerfarande foer framstaellning av kemiska pappersmassor foer blekning. FI82726C (fi)

Applications Claiming Priority (2)

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

Publications (4)

Publication Number Publication Date
FI854148A0 FI854148A0 (fi) 1985-10-23
FI854148L FI854148L (fi) 1986-04-26
FI82726B FI82726B (fi) 1990-12-31
FI82726C true FI82726C (fi) 1991-04-10

Family

ID=9309092

Family Applications (1)

Application Number Title Priority Date Filing Date
FI854148A FI82726C (fi) 1984-10-25 1985-10-23 Foerfarande foer framstaellning av kemiska pappersmassor foer blekning.

Country Status (9)

Country Link
EP (1) EP0180529B2 (fr)
JP (1) JPS61102495A (fr)
AT (1) ATE35433T1 (fr)
AU (1) AU576394B2 (fr)
CA (1) CA1273755A (fr)
DE (2) DE3563548D1 (fr)
ES (1) ES8606557A1 (fr)
FI (1) FI82726C (fr)
FR (1) FR2572431B1 (fr)

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
FI854148A0 (fi) 1985-10-23
EP0180529B2 (fr) 1992-04-08
FI854148L (fi) 1986-04-26
JPS61102495A (ja) 1986-05-21
EP0180529B1 (fr) 1988-06-29
ATE35433T1 (de) 1988-07-15
FI82726B (fi) 1990-12-31
AU576394B2 (en) 1988-08-25
AU4910885A (en) 1986-05-29
CA1273755A (fr) 1990-09-11
EP0180529A1 (fr) 1986-05-07
FR2572431A1 (fr) 1986-05-02
FR2572431B1 (fr) 1987-12-04
DE3563548D1 (en) 1988-08-04
ES548166A0 (es) 1986-04-01
ES8606557A1 (es) 1986-04-01
DE180529T1 (de) 1986-12-18

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Owner name: ATOCHEM