FI20085347A0 - Pretreatment procedure to reduce light-yellowing of lignin-containing material - Google Patents

Pretreatment procedure to reduce light-yellowing of lignin-containing material

Info

Publication number
FI20085347A0
FI20085347A0 FI20085347A FI20085347A FI20085347A0 FI 20085347 A0 FI20085347 A0 FI 20085347A0 FI 20085347 A FI20085347 A FI 20085347A FI 20085347 A FI20085347 A FI 20085347A FI 20085347 A0 FI20085347 A0 FI 20085347A0
Authority
FI
Finland
Prior art keywords
yellowing
lignin
containing material
reduce light
pretreatment procedure
Prior art date
Application number
FI20085347A
Other languages
Finnish (fi)
Swedish (sv)
Inventor
Veli-Matti Vuorenpalo
Jaakko Pere
Reijo Aksela
Andrei Tauber
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 FI20085347A priority Critical patent/FI20085347A0/en
Publication of FI20085347A0 publication Critical patent/FI20085347A0/en
Priority to ARP090100629 priority patent/AR070630A1/en
Priority to PCT/EP2009/054603 priority patent/WO2009130167A1/en

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
    • D21C9/1026—Other features in bleaching processes
    • D21C9/1047—Conserving the bleached pulp
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
    • D21H21/14—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties characterised by function or properties in or on the paper
    • D21H21/30—Luminescent or fluorescent substances, e.g. for optical bleaching
FI20085347A 2008-04-22 2008-04-22 Pretreatment procedure to reduce light-yellowing of lignin-containing material FI20085347A0 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
FI20085347A FI20085347A0 (en) 2008-04-22 2008-04-22 Pretreatment procedure to reduce light-yellowing of lignin-containing material
ARP090100629 AR070630A1 (en) 2008-04-22 2009-02-24 PRIOR TREATMENT METHOD FOR REDUCING YELLOW INDUITED BY THE LIGHT OF THE MATERIAL WITH LIGNIN CONTENT
PCT/EP2009/054603 WO2009130167A1 (en) 2008-04-22 2009-04-17 Pretreatment method for reduction of light-induced yellowing of lignin-containing material

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FI20085347A FI20085347A0 (en) 2008-04-22 2008-04-22 Pretreatment procedure to reduce light-yellowing of lignin-containing material

Publications (1)

Publication Number Publication Date
FI20085347A0 true FI20085347A0 (en) 2008-04-22

Family

ID=39385970

Family Applications (1)

Application Number Title Priority Date Filing Date
FI20085347A FI20085347A0 (en) 2008-04-22 2008-04-22 Pretreatment procedure to reduce light-yellowing of lignin-containing material

Country Status (3)

Country Link
AR (1) AR070630A1 (en)
FI (1) FI20085347A0 (en)
WO (1) WO2009130167A1 (en)

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE456168C (en) * 1987-02-27 1991-06-06 Mo Och Domsjoe Ab PROCEDURE PROVIDES LIGHTNESS STABILIZATION OF BLACK LIGNIN-CONTENT CELLULOSAMASSA
US6447644B1 (en) * 1997-07-23 2002-09-10 Ciba Specialty Chemicals Corporation Inhibition of pulp and paper yellowing using nitroxides, hydroxylamines and other coadditives
FI20031904A (en) * 2003-12-23 2005-06-24 Kemira Oyj Process for modifying a lignocellulosic product
US7914646B2 (en) * 2006-07-21 2011-03-29 Nalco Company Compositions and processes for paper production

Also Published As

Publication number Publication date
AR070630A1 (en) 2010-04-21
WO2009130167A1 (en) 2009-10-29

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Legal Events

Date Code Title Description
FD Application lapsed