FI20086031A0 - Valkaisumenetelmä - Google Patents

Valkaisumenetelmä

Info

Publication number
FI20086031A0
FI20086031A0 FI20086031A FI20086031A FI20086031A0 FI 20086031 A0 FI20086031 A0 FI 20086031A0 FI 20086031 A FI20086031 A FI 20086031A FI 20086031 A FI20086031 A FI 20086031A FI 20086031 A0 FI20086031 A0 FI 20086031A0
Authority
FI
Finland
Prior art keywords
bleaching
Prior art date
Application number
FI20086031A
Other languages
English (en)
Swedish (sv)
Other versions
FI20086031L (fi
Inventor
Risto Rahkola
Birgitta Peltopakka
Hannu Haemaelaeinen
Jonas Konn
Sari Vahlroos-Pirneskoski
Original Assignee
Kemira Oyj
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 Kemira Oyj filed Critical Kemira Oyj
Priority to FI20086031A priority Critical patent/FI20086031L/fi
Publication of FI20086031A0 publication Critical patent/FI20086031A0/fi
Priority to CA2741612A priority patent/CA2741612A1/en
Priority to US13/126,577 priority patent/US20110203485A1/en
Priority to PCT/FI2009/050872 priority patent/WO2010049591A1/en
Priority to EP09823134.3A priority patent/EP2344695A4/en
Publication of FI20086031L publication Critical patent/FI20086031L/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
    • 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
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B17/00—Sulfur; Compounds thereof
    • C01B17/64—Thiosulfates; Dithionites; Polythionates
    • C01B17/66—Dithionites or hydrosulfites (S2O42-)
    • 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
    • D21C9/1084—Bleaching ; Apparatus therefor with reducing compounds
    • D21C9/1089—Bleaching ; Apparatus therefor with reducing compounds with dithionites
    • 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)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Paper (AREA)
FI20086031A 2008-10-31 2008-10-31 Valkaisumenetelmä FI20086031L (fi)

Priority Applications (5)

Application Number Priority Date Filing Date Title
FI20086031A FI20086031L (fi) 2008-10-31 2008-10-31 Valkaisumenetelmä
CA2741612A CA2741612A1 (en) 2008-10-31 2009-10-30 Bleaching method
US13/126,577 US20110203485A1 (en) 2008-10-31 2009-10-30 Bleaching method
PCT/FI2009/050872 WO2010049591A1 (en) 2008-10-31 2009-10-30 Bleaching method
EP09823134.3A EP2344695A4 (en) 2008-10-31 2009-10-30 BLEACH PROCEDURE

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FI20086031A FI20086031L (fi) 2008-10-31 2008-10-31 Valkaisumenetelmä

Publications (2)

Publication Number Publication Date
FI20086031A0 true FI20086031A0 (fi) 2008-10-31
FI20086031L FI20086031L (fi) 2010-05-01

Family

ID=39924668

Family Applications (1)

Application Number Title Priority Date Filing Date
FI20086031A FI20086031L (fi) 2008-10-31 2008-10-31 Valkaisumenetelmä

Country Status (5)

Country Link
US (1) US20110203485A1 (fi)
EP (1) EP2344695A4 (fi)
CA (1) CA2741612A1 (fi)
FI (1) FI20086031L (fi)
WO (1) WO2010049591A1 (fi)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8845860B2 (en) * 2010-09-16 2014-09-30 Georgia-Pacific Consumer Products Lp High brightness pulps from lignin rich waste papers
KR20150108367A (ko) * 2013-01-21 2015-09-25 세키스이가가쿠 고교가부시키가이샤 재조합 세포, 및 1,4-부탄디올의 생산 방법
EP4392181A1 (en) * 2021-10-13 2024-07-03 Kemira OYJ Application of performic acid (pfa) for mineral processing

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3290161A (en) * 1963-10-04 1966-12-06 Fmc Corp Clay bleaching
US3284283A (en) * 1964-02-17 1966-11-08 Fmc Corp Production of wood pulps including treatment of cellulosic fibers with bisulfite ion followed by alkali metal borohydride
EP0027369A1 (en) * 1979-10-12 1981-04-22 Thiokol Corporation Stable precursor solution for the generation of hydrosulfite and use thereof in bleaching wood pulp, brightening kaolin clay and reducing vat dyestuffs to their leuco form
DE3308298A1 (de) * 1983-03-09 1984-09-13 Basf Ag, 6700 Ludwigshafen Verfahren zur reduktiven bleiche von holzstoff
CA1249402A (en) * 1984-12-21 1989-01-31 Pulp And Paper Research Institute Of Canada Multistage brightening of high yield and ultra high- yield wood pulps
US4788041A (en) * 1986-12-22 1988-11-29 Morton Thiokol, Inc. Apparatus for the production of sodium hydrosulfite
SE457647B (sv) * 1987-06-24 1989-01-16 Eka Nobel Ab Saett vid blekning av material med ditionitloesning
SE508227C2 (sv) * 1997-05-30 1998-09-14 Hampshire Chemical Ab Extraktionsmedel innefattade eteriska oljor och förfarande för att använda dessa
US7553822B2 (en) * 2003-10-30 2009-06-30 The United States Of America As Represented By The Department Of Health And Human Services Compositions and methods for inhibiting translation of a Mect1-MAML2 chimeric gene

Also Published As

Publication number Publication date
FI20086031L (fi) 2010-05-01
EP2344695A4 (en) 2013-09-11
EP2344695A1 (en) 2011-07-20
WO2010049591A1 (en) 2010-05-06
CA2741612A1 (en) 2010-05-06
US20110203485A1 (en) 2011-08-25

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Legal Events

Date Code Title Description
MM Patent lapsed