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FI860421A - Foerfarande foer delignifiering av sulfatmassa. - Google Patents

Foerfarande foer delignifiering av sulfatmassa. Download PDF

Info

Publication number
FI860421A
FI860421A FI860421A FI860421A FI860421A FI 860421 A FI860421 A FI 860421A FI 860421 A FI860421 A FI 860421A FI 860421 A FI860421 A FI 860421A FI 860421 A FI860421 A FI 860421A
Authority
FI
Finland
Prior art keywords
pulp
sulfatmassa
polysulphide
foerfarande foer
cooking
Prior art date
Application number
FI860421A
Other languages
English (en)
Other versions
FI81135B (fi
FI81135C (fi
FI860421A0 (fi
Inventor
Josef Gierer
Isa Noren
Original Assignee
Aga Ab
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 Aga Ab filed Critical Aga Ab
Publication of FI860421A0 publication Critical patent/FI860421A0/fi
Publication of FI860421A publication Critical patent/FI860421A/fi
Publication of FI81135B publication Critical patent/FI81135B/fi
Application granted granted Critical
Publication of FI81135C publication Critical patent/FI81135C/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
    • D21C9/001—Modification of pulp properties
    • D21C9/002—Modification of pulp properties by chemical means; preparation of dewatered pulp, e.g. in sheet or bulk form, containing special additives
    • 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
    • D21C9/001—Modification of pulp properties
    • D21C9/002—Modification of pulp properties by chemical means; preparation of dewatered pulp, e.g. in sheet or bulk form, containing special additives
    • D21C9/004—Modification of pulp properties by chemical means; preparation of dewatered pulp, e.g. in sheet or bulk form, containing special additives inorganic compounds

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Inorganic Chemistry (AREA)
  • Paper (AREA)
FI860421A 1985-02-01 1986-01-29 Foerfarande foer delignifiering av sulfatmassa. FI81135C (fi)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE8500472A SE452483B (sv) 1985-02-01 1985-02-01 Forfarande for delignifiering av sulfatmassa
SE8500472 1985-02-01

Publications (4)

Publication Number Publication Date
FI860421A0 FI860421A0 (fi) 1986-01-29
FI860421A true FI860421A (fi) 1986-08-02
FI81135B FI81135B (fi) 1990-05-31
FI81135C FI81135C (fi) 1990-09-10

Family

ID=20358977

Family Applications (1)

Application Number Title Priority Date Filing Date
FI860421A FI81135C (fi) 1985-02-01 1986-01-29 Foerfarande foer delignifiering av sulfatmassa.

Country Status (3)

Country Link
CA (1) CA1268906A (fi)
FI (1) FI81135C (fi)
SE (1) SE452483B (fi)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE8704041L (sv) * 1987-10-16 1989-04-17 Sca Development Ab Saett vid blekning av cellulosamassa

Also Published As

Publication number Publication date
SE452483B (sv) 1987-11-30
FI81135B (fi) 1990-05-31
FI81135C (fi) 1990-09-10
FI860421A0 (fi) 1986-01-29
CA1268906A (en) 1990-05-15
SE8500472D0 (sv) 1985-02-01
SE8500472L (sv) 1986-08-02

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Legal Events

Date Code Title Description
MM Patent lapsed

Owner name: AGA AKTIEBOLAG