BR112013003758B1 - método para a remoção de ácidos hexenurônicos da polpa - Google Patents

método para a remoção de ácidos hexenurônicos da polpa Download PDF

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Publication number
BR112013003758B1
BR112013003758B1 BR112013003758-0A BR112013003758A BR112013003758B1 BR 112013003758 B1 BR112013003758 B1 BR 112013003758B1 BR 112013003758 A BR112013003758 A BR 112013003758A BR 112013003758 B1 BR112013003758 B1 BR 112013003758B1
Authority
BR
Brazil
Prior art keywords
pulp
oxygen
perbenzoic acid
stage
acid
Prior art date
Application number
BR112013003758-0A
Other languages
English (en)
Portuguese (pt)
Other versions
BR112013003758A2 (pt
Inventor
Pedro FARDIM
Malin Ekroos
Original Assignee
Abo Akademi University
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 Abo Akademi University filed Critical Abo Akademi University
Publication of BR112013003758A2 publication Critical patent/BR112013003758A2/pt
Publication of BR112013003758B1 publication Critical patent/BR112013003758B1/pt

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    • 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
    • D21C9/147—Bleaching ; Apparatus therefor with oxygen or its allotropic modifications
    • 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
    • D21C9/166—Bleaching ; Apparatus therefor with per compounds with peracids

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  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Paper (AREA)
  • Saccharide Compounds (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
BR112013003758-0A 2010-08-18 2011-08-18 método para a remoção de ácidos hexenurônicos da polpa BR112013003758B1 (pt)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FI20105862 2010-08-18
FI20105862A FI20105862A0 (fi) 2010-08-18 2010-08-18 Menetelmä hekseeniuronihappojen poistamiseksi
PCT/FI2011/050721 WO2012022840A1 (en) 2010-08-18 2011-08-18 Method for removing hexenuronic acids

Publications (2)

Publication Number Publication Date
BR112013003758A2 BR112013003758A2 (pt) 2016-05-31
BR112013003758B1 true BR112013003758B1 (pt) 2020-07-21

Family

ID=42669367

Family Applications (1)

Application Number Title Priority Date Filing Date
BR112013003758-0A BR112013003758B1 (pt) 2010-08-18 2011-08-18 método para a remoção de ácidos hexenurônicos da polpa

Country Status (4)

Country Link
EP (1) EP2606175B1 (fi)
BR (1) BR112013003758B1 (fi)
FI (1) FI20105862A0 (fi)
WO (1) WO2012022840A1 (fi)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015018908A1 (en) * 2013-08-09 2015-02-12 Novozymes A/S Reducing content of hexenuronic acids in cellulosic pulp

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE69202149T2 (de) * 1991-02-12 1995-11-09 Pulp Paper Res Inst Bleichen von lignocellulosischen Materialien mit aktiviertem Sauerstoff.
US6776876B1 (en) 1994-10-13 2004-08-17 Andritz Oy Method of treating cellulosic pulp to remove hexenuronic acid
DE102005005016A1 (de) * 2005-02-03 2006-08-10 Basf Ag Polymere hydrophobe Aminonitrilquats zur Bleichaktivierung
CA2631545C (en) * 2005-12-02 2014-08-19 Akzo Nobel N.V. Process of producing high-yield pulp
EA013901B1 (ru) 2006-10-11 2010-08-30 Акцо Нобель Н.В. Отбеливание целлюлозы

Also Published As

Publication number Publication date
BR112013003758A2 (pt) 2016-05-31
EP2606175A1 (en) 2013-06-26
EP2606175B1 (en) 2016-04-20
WO2012022840A1 (en) 2012-02-23
FI20105862A0 (fi) 2010-08-18

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Legal Events

Date Code Title Description
B06F Objections, documents and/or translations needed after an examination request according [chapter 6.6 patent gazette]
B06T Formal requirements before examination [chapter 6.20 patent gazette]
B09A Decision: intention to grant [chapter 9.1 patent gazette]
B16A Patent or certificate of addition of invention granted [chapter 16.1 patent gazette]

Free format text: PRAZO DE VALIDADE: 20 (VINTE) ANOS CONTADOS A PARTIR DE 18/08/2011, OBSERVADAS AS CONDICOES LEGAIS.

B21F Lapse acc. art. 78, item iv - on non-payment of the annual fees in time

Free format text: REFERENTE A 11A ANUIDADE.

B24J Lapse because of non-payment of annual fees (definitively: art 78 iv lpi, resolution 113/2013 art. 12)

Free format text: EM VIRTUDE DA EXTINCAO PUBLICADA NA RPI 2684 DE 14-06-2022 E CONSIDERANDO AUSENCIA DE MANIFESTACAO DENTRO DOS PRAZOS LEGAIS, INFORMO QUE CABE SER MANTIDA A EXTINCAO DA PATENTE E SEUS CERTIFICADOS, CONFORME O DISPOSTO NO ARTIGO 12, DA RESOLUCAO 113/2013.