FI771500A7 - - Google Patents

Info

Publication number
FI771500A7
FI771500A7 FI771500A FI771500A FI771500A7 FI 771500 A7 FI771500 A7 FI 771500A7 FI 771500 A FI771500 A FI 771500A FI 771500 A FI771500 A FI 771500A FI 771500 A7 FI771500 A7 FI 771500A7
Authority
FI
Finland
Application number
FI771500A
Other languages
Finnish (fi)
Other versions
FI62362B (fi
FI62362C (fi
Inventor
Arthur W Kempf
Richard B Phillips
Original Assignee
Int Paper Co
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
Priority claimed from US05/705,869 external-priority patent/US4080249A/en
Application filed by Int Paper Co filed Critical Int Paper Co
Publication of FI771500A7 publication Critical patent/FI771500A7/fi
Publication of FI62362B publication Critical patent/FI62362B/fi
Application granted granted Critical
Publication of FI62362C publication Critical patent/FI62362C/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
    • D21C9/1073—Bleaching ; Apparatus therefor with O3

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Paper (AREA)
  • External Artificial Organs (AREA)
  • Apparatus Associated With Microorganisms And Enzymes (AREA)
FI771500A 1976-06-02 1977-05-11 Ligninavlaegsning och blekning av lignocellulosamassa med ozon FI62362C (fi)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US69206276A 1976-06-02 1976-06-02
US69206276 1976-06-02
US70586976 1976-07-16
US05/705,869 US4080249A (en) 1976-06-02 1976-07-16 Delignification and bleaching of a lignocellulosic pulp slurry with ozone

Publications (3)

Publication Number Publication Date
FI771500A7 true FI771500A7 (enrdf_load_html_response) 1977-12-03
FI62362B FI62362B (fi) 1982-08-31
FI62362C FI62362C (fi) 1982-12-10

Family

ID=27104896

Family Applications (1)

Application Number Title Priority Date Filing Date
FI771500A FI62362C (fi) 1976-06-02 1977-05-11 Ligninavlaegsning och blekning av lignocellulosamassa med ozon

Country Status (9)

Country Link
JP (1) JPS52148204A (enrdf_load_html_response)
AU (1) AU509882B2 (enrdf_load_html_response)
BR (1) BR7703256A (enrdf_load_html_response)
CA (1) CA1090510A (enrdf_load_html_response)
FI (1) FI62362C (enrdf_load_html_response)
FR (1) FR2353674A1 (enrdf_load_html_response)
NO (1) NO771468L (enrdf_load_html_response)
NZ (1) NZ184228A (enrdf_load_html_response)
SE (1) SE415492B (enrdf_load_html_response)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2475084A1 (fr) * 1979-11-23 1981-08-07 Weyerhaeuser Co Delignification par l'ozone a faible consistance
JPS5679797A (en) * 1979-11-30 1981-06-30 Weyerhaeuser Co Bleaching of cellulose fiber
FR2620744A1 (fr) * 1987-09-17 1989-03-24 Degremont Procede de traitement par l'ozone de materiaux ligno-cellulosiques, notamment de pates a papier et reacteur pour la mise en oeuvre de ce procede
ATE90404T1 (de) * 1988-01-25 1993-06-15 Acetocell Gmbh & Co Kg Verfahren zur behandlung von lignin enthaltender cellulosemasse mit ozon.
FI89516B (fi) * 1989-05-10 1993-06-30 Ahlstroem Oy Foerfarande foer blekning av cellulosamassa med otson
AU636173B2 (en) * 1989-10-30 1993-04-22 Lenzing Aktiengesellschaft Method for the chlorine-free bleaching of pulps
AU638017B2 (en) * 1990-05-17 1993-06-17 Union Camp Corporation Environmentally improved process for bleaching lignocellulosic materials

Also Published As

Publication number Publication date
SE7706371L (sv) 1977-12-03
JPS52148204A (en) 1977-12-09
BR7703256A (pt) 1978-01-31
FR2353674A1 (fr) 1977-12-30
AU509882B2 (en) 1980-05-29
FI62362B (fi) 1982-08-31
AU2465177A (en) 1978-11-02
FI62362C (fi) 1982-12-10
SE415492B (sv) 1980-10-06
NO771468L (no) 1977-12-05
NZ184228A (en) 1980-04-28
CA1090510A (en) 1980-12-02

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Legal Events

Date Code Title Description
MM Patent lapsed

Owner name: INTERNATIONAL PAPER CO