CL2007002906A1 - Proceso para blanquear pulpa derivada de un proceso de pulpeo alcalino con un contenido de acido hexenuronico previo a la etapa de blanqueo final que comprende tres etapas de dioxido de cloro con un 40 a 60%, 30 a 55%, 4 a 20%, respectivamente, de ca - Google Patents

Proceso para blanquear pulpa derivada de un proceso de pulpeo alcalino con un contenido de acido hexenuronico previo a la etapa de blanqueo final que comprende tres etapas de dioxido de cloro con un 40 a 60%, 30 a 55%, 4 a 20%, respectivamente, de ca

Info

Publication number: CL2007002906A1
Authority: CL; Chile
Prior art keywords: whitening; pulp; stages; content; chlorine dioxide
Prior art date: 2006-10-11

Application number

CL2007002906A

Other languages

English (en)

Inventor

Magnus Greschik Thom Bjorklund

Original Assignee

Akzo Nobel Nv

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.)

2006-10-11

Filing date

2007-10-09

Publication date

2008-05-02

Family has litigation

First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=37807769&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=CL2007002906(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.

2007-10-09 Application filed by Akzo Nobel Nv filed Critical Akzo Nobel Nv

2008-05-02 Publication of CL2007002906A1 publication Critical patent/CL2007002906A1/es

Links

OSVXSBDYLRYLIG-UHFFFAOYSA-N dioxidochlorine(.) Chemical compound O=Cl=O OSVXSBDYLRYLIG-UHFFFAOYSA-N 0.000 title 2
230000002087 whitening effect Effects 0.000 title 2
239000004155 Chlorine dioxide Substances 0.000 title 1
239000002253 acid Substances 0.000 title 1
235000019398 chlorine dioxide Nutrition 0.000 title 1

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
- D21C9/12—Bleaching ; Apparatus therefor with halogens or halogen-containing compounds
- D21C9/14—Bleaching ; Apparatus therefor with halogens or halogen-containing compounds with ClO2 or chlorites
- D21C9/142—Bleaching ; Apparatus therefor with halogens or halogen-containing compounds with ClO2 or chlorites with ClO2/Cl2 in a multistage process involving ClO2/Cl2 exclusively

Landscapes

Life Sciences & Earth Sciences (AREA)
Engineering & Computer Science (AREA)
Wood Science & Technology (AREA)
Paper (AREA)

CL2007002906A 2006-10-11 2007-10-09 Proceso para blanquear pulpa derivada de un proceso de pulpeo alcalino con un contenido de acido hexenuronico previo a la etapa de blanqueo final que comprende tres etapas de dioxido de cloro con un 40 a 60%, 30 a 55%, 4 a 20%, respectivamente, de ca CL2007002906A1 (es)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
EP06122119		2006-10-11

Publications (1)

Publication Number	Publication Date
CL2007002906A1 true CL2007002906A1 (es)	2008-05-02

Family

ID=37807769

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
CL2007002906A CL2007002906A1 (es)	2006-10-11	2007-10-09	Proceso para blanquear pulpa derivada de un proceso de pulpeo alcalino con un contenido de acido hexenuronico previo a la etapa de blanqueo final que comprende tres etapas de dioxido de cloro con un 40 a 60%, 30 a 55%, 4 a 20%, respectivamente, de ca

Country Status (12)

Country	Link
EP (1)	EP2082096B1 (es)
AR (1)	AR063160A1 (es)
BR (1)	BRPI0719893A2 (es)
CA (1)	CA2665969C (es)
CL (1)	CL2007002906A1 (es)
EA (1)	EA013901B1 (es)
ES (1)	ES2403371T3 (es)
NO (1)	NO20091815L (es)
PT (1)	PT2082096E (es)
UY (1)	UY30634A1 (es)
WO (1)	WO2008044988A1 (es)
ZA (1)	ZA200903205B (es)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
FI20105862A0 (fi)	2010-08-18	2010-08-18	Bo Akademi University	Menetelmä hekseeniuronihappojen poistamiseksi
WO2015018908A1 (en)	2013-08-09	2015-02-12	Novozymes A/S	Reducing content of hexenuronic acids in cellulosic pulp

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US3501374A (en) *	1968-12-26	1970-03-17	Hooker Chemical Corp	Sequential bleaching of kraft pulp with chlorine dioxide and chlorine
US5268075A (en) *	1989-10-19	1993-12-07	North Carolina State University	High efficiency two-step, high-low pH chlorine dioxide pulp bleaching process
US5030324A (en) *	1990-01-29	1991-07-09	Champion International Corporation	Sequential bleaching procedure using chlorine and chlorine dioxide in a first chlorination stage of a multistage bleaching process
US6776876B1 (en) *	1994-10-13	2004-08-17	Andritz Oy	Method of treating cellulosic pulp to remove hexenuronic acid
FI119383B (fi) *	1998-03-06	2008-10-31	Andritz Oy	Menetelmä massan käsittelemiseksi
WO2002099186A1 (en) *	2001-06-06	2002-12-12	Kvaerner Pulping Ab	Reduction of organically bound chlorine formed in chlorine dioxide bleaching
US20060201642A1 (en) *	2005-03-08	2006-09-14	Andritz Inc.	Methods of treating chemical cellulose pulp

2007
- 2007-09-06 EA EA200970367A patent/EA013901B1/ru not_active IP Right Cessation
- 2007-09-06 PT PT07808867T patent/PT2082096E/pt unknown
- 2007-09-06 CA CA2665969A patent/CA2665969C/en not_active Expired - Fee Related
- 2007-09-06 BR BRPI0719893-0A2A patent/BRPI0719893A2/pt not_active Application Discontinuation
- 2007-09-06 ES ES07808867T patent/ES2403371T3/es active Active
- 2007-09-06 EP EP07808867A patent/EP2082096B1/en not_active Not-in-force
- 2007-09-06 WO PCT/SE2007/050630 patent/WO2008044988A1/en not_active Ceased
- 2007-10-08 UY UY30634A patent/UY30634A1/es not_active Application Discontinuation
- 2007-10-09 CL CL2007002906A patent/CL2007002906A1/es unknown
- 2007-10-09 AR ARP070104434 patent/AR063160A1/es active IP Right Grant
2009
- 2009-05-08 NO NO20091815A patent/NO20091815L/no not_active Application Discontinuation
- 2009-05-08 ZA ZA200903205A patent/ZA200903205B/xx unknown

Also Published As

Publication number	Publication date
EA013901B1 (ru)	2010-08-30
AR063160A1 (es)	2008-12-30
EP2082096A1 (en)	2009-07-29
NO20091815L (no)	2009-07-10
UY30634A1 (es)	2007-11-30
CA2665969C (en)	2016-04-12
EP2082096B1 (en)	2013-02-20
ES2403371T3 (es)	2013-05-17
EA200970367A1 (ru)	2009-08-28
BRPI0719893A2 (pt)	2014-05-06
ZA200903205B (en)	2010-03-31
CA2665969A1 (en)	2008-04-17
PT2082096E (pt)	2013-04-26
WO2008044988A1 (en)	2008-04-17

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