BR112013003758A2 - method for removal of hexenuronic acids - Google Patents

method for removal of hexenuronic acids

Info

Publication number
BR112013003758A2
BR112013003758A2 BR112013003758A BR112013003758A BR112013003758A2 BR 112013003758 A2 BR112013003758 A2 BR 112013003758A2 BR 112013003758 A BR112013003758 A BR 112013003758A BR 112013003758 A BR112013003758 A BR 112013003758A BR 112013003758 A2 BR112013003758 A2 BR 112013003758A2
Authority
BR
Brazil
Prior art keywords
removal
pulp
hexenuronic acids
acids
hexenuronic
Prior art date
Application number
BR112013003758A
Other languages
Portuguese (pt)
Other versions
BR112013003758B1 (en
Inventor
Malin Ekroos
Pedro Fardim
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/en
Publication of BR112013003758B1 publication Critical patent/BR112013003758B1/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
    • D21C9/147—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

Landscapes

  • 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)

Abstract

método para a remoção de ácidos hexenurônicos. a presente invenção refere-se a um método para a remoção de ácidos hexenurônicos da polpa. o método compreende a obtenção de polpa por formação de polpa química, o tratamento de polpa obtido por uso de um outro processo de deslignificação compreendendo um estágio de tratamento com oxigênio e realização do estágio de tratamento com oxigênio na presença de pelo menos um ácido perbenzoico. a invenção também refere-se ao uso de ácido perbenzoico para a remoção de ácidos hexenurônicos a partir da polpa.method for the removal of hexenuronic acids. The present invention relates to a method for removing hexenuronic acids from pulp. The method comprises obtaining pulp by forming chemical pulp, treating pulp obtained by using another delignification process comprising an oxygen treatment stage and performing the oxygen treatment stage in the presence of at least one perbenzoic acid. The invention also relates to the use of perbenzoic acid for the removal of hexenuronic acids from pulp.

BR112013003758-0A 2010-08-18 2011-08-18 method for removing hexenuronic acids from the pulp BR112013003758B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FI20105862A FI20105862A0 (en) 2010-08-18 2010-08-18 METHOD FOR REMOVING HEXENURURIC ACIDS
FI20105862 2010-08-18
PCT/FI2011/050721 WO2012022840A1 (en) 2010-08-18 2011-08-18 Method for removing hexenuronic acids

Publications (2)

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

Family

ID=42669367

Family Applications (1)

Application Number Title Priority Date Filing Date
BR112013003758-0A BR112013003758B1 (en) 2010-08-18 2011-08-18 method for removing hexenuronic acids from the pulp

Country Status (4)

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

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105431586B (en) 2013-08-09 2018-05-18 诺维信公司 Reduce the hexenuronic acid content in cellulose pulp

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1992013993A1 (en) * 1991-02-12 1992-08-20 Pulp And Paper Research Institute Of Canada Bleaching of lignocellulosic material with activated oxygen
US6776876B1 (en) 1994-10-13 2004-08-17 Andritz Oy Method of treating cellulosic pulp to remove hexenuronic acid
DE102005005016A1 (en) * 2005-02-03 2006-08-10 Basf Ag Polymers hydrophobic aminonitrile quats for bleach activation
ATE514813T1 (en) * 2005-12-02 2011-07-15 Akzo Nobel Nv METHOD FOR PRODUCING HIGH YIELD PULP
EA013901B1 (en) 2006-10-11 2010-08-30 Акцо Нобель Н.В. Bleaching of pulp

Also Published As

Publication number Publication date
BR112013003758B1 (en) 2020-07-21
EP2606175B1 (en) 2016-04-20
EP2606175A1 (en) 2013-06-26
WO2012022840A1 (en) 2012-02-23
FI20105862A0 (en) 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.