FI851779L - Foerfarande foer blekning av ns-aq- eller sap-massa. - Google Patents

Foerfarande foer blekning av ns-aq- eller sap-massa.

Info

Publication number
FI851779L
FI851779L FI851779A FI851779A FI851779L FI 851779 L FI851779 L FI 851779L FI 851779 A FI851779 A FI 851779A FI 851779 A FI851779 A FI 851779A FI 851779 L FI851779 L FI 851779L
Authority
FI
Finland
Prior art keywords
eller
foerfarande foer
sap mass
blekning
foer blekning
Prior art date
Application number
FI851779A
Other languages
English (en)
Other versions
FI851779A0 (fi
FI76136C (fi
FI76136B (fi
Inventor
Reijo Korhonen
Ingmar Lassenius
Ismo Ilottu
Matti Jaervinen
Teuvo Matti Valtteri Pekuri
Original Assignee
Kymi Stromberg Oy
Yhtyneet Paperitehtaat Oy
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 Kymi Stromberg Oy, Yhtyneet Paperitehtaat Oy filed Critical Kymi Stromberg Oy
Priority to FI851779A priority Critical patent/FI76136C/fi
Publication of FI851779A0 publication Critical patent/FI851779A0/fi
Priority to CA000507958A priority patent/CA1274655A/en
Priority to SE8602057A priority patent/SE8602057L/xx
Publication of FI851779L publication Critical patent/FI851779L/fi
Application granted granted Critical
Publication of FI76136B publication Critical patent/FI76136B/fi
Publication of FI76136C publication Critical patent/FI76136C/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
    • D21C9/16—Bleaching ; Apparatus therefor with per compounds
    • D21C9/163—Bleaching ; Apparatus therefor with per compounds with peroxides

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Paper (AREA)
FI851779A 1985-05-06 1985-05-06 Foerfarande foer blekning av ns-aq- eller sap-massa. FI76136C (fi)

Priority Applications (3)

Application Number Priority Date Filing Date Title
FI851779A FI76136C (fi) 1985-05-06 1985-05-06 Foerfarande foer blekning av ns-aq- eller sap-massa.
CA000507958A CA1274655A (en) 1985-05-06 1986-04-30 Process for the bleaching of ns-aq or sap pulp
SE8602057A SE8602057L (sv) 1985-05-06 1986-05-05 Forfarande for blekning av ns-aq- eller sap-massa

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI851779 1985-05-06
FI851779A FI76136C (fi) 1985-05-06 1985-05-06 Foerfarande foer blekning av ns-aq- eller sap-massa.

Publications (4)

Publication Number Publication Date
FI851779A0 FI851779A0 (fi) 1985-05-06
FI851779L true FI851779L (fi) 1986-11-07
FI76136B FI76136B (fi) 1988-05-31
FI76136C FI76136C (fi) 1988-09-09

Family

ID=8520776

Family Applications (1)

Application Number Title Priority Date Filing Date
FI851779A FI76136C (fi) 1985-05-06 1985-05-06 Foerfarande foer blekning av ns-aq- eller sap-massa.

Country Status (3)

Country Link
CA (1) CA1274655A (fi)
FI (1) FI76136C (fi)
SE (1) SE8602057L (fi)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7001484B2 (en) 2000-05-04 2006-02-21 University Of New Brunswick Peroxide bleaching of wood pulp using stabilizers and sodium hydrosulfide reducing agent
US8298373B2 (en) 2008-02-07 2012-10-30 University Of New Brunswick Combined process of peroxide bleaching of wood pulps and addition of optical brightening agents

Also Published As

Publication number Publication date
FI851779A0 (fi) 1985-05-06
CA1274655A (en) 1990-10-02
FI76136C (fi) 1988-09-09
SE8602057D0 (sv) 1986-05-05
SE8602057L (sv) 1986-11-07
FI76136B (fi) 1988-05-31

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Legal Events

Date Code Title Description
PC Transfer of assignment of patent

Owner name: KYMI PAPER OY

MM Patent lapsed

Owner name: KYMI PAPER OY

Owner name: YHTYNEET PAPERITEHTAAT OY