ZA200903205B - Bleaching of pulp - Google Patents

Bleaching of pulp

Info

Publication number: ZA200903205B
Authority: ZA; South Africa
Prior art keywords: bleaching; pulp
Prior art date: 2006-10-11

Application number

ZA200903205A

Inventor

Magnus Bjoerklund

Thomas Christopher Greschik

Haakan Faegersten

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

2009-05-08

Publication date

2010-03-31

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=ZA200903205(B) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.

2009-05-08 Application filed by Akzo Nobel Nv filed Critical Akzo Nobel Nv

2010-03-31 Publication of ZA200903205B publication Critical patent/ZA200903205B/en

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)

ZA200903205A 2006-10-11 2009-05-08 Bleaching of pulp ZA200903205B (en)

Applications Claiming Priority (1)

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

Publications (1)

Publication Number	Publication Date
ZA200903205B true ZA200903205B (en)	2010-03-31

Family

ID=37807769

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
ZA200903205A ZA200903205B (en)	2006-10-11	2009-05-08	Bleaching of pulp

Country Status (12)

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

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
FI20105862A0 (en)	2010-08-18	2010-08-18	Bo Akademi University	METHOD FOR REMOVING HEXENURURIC ACIDS
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 (en) *	1998-03-06	2008-10-31	Andritz Oy	Procedure for treating pulp
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 WO PCT/SE2007/050630 patent/WO2008044988A1/en not_active Ceased
- 2007-09-06 ES ES07808867T patent/ES2403371T3/en active Active
- 2007-09-06 CA CA2665969A patent/CA2665969C/en not_active Expired - Fee Related
- 2007-09-06 BR BRPI0719893-0A2A patent/BRPI0719893A2/en not_active Application Discontinuation
- 2007-09-06 EA EA200970367A patent/EA013901B1/en not_active IP Right Cessation
- 2007-09-06 EP EP07808867A patent/EP2082096B1/en not_active Not-in-force
- 2007-09-06 PT PT07808867T patent/PT2082096E/en unknown
- 2007-10-08 UY UY30634A patent/UY30634A1/en not_active Application Discontinuation
- 2007-10-09 AR ARP070104434 patent/AR063160A1/en active IP Right Grant
- 2007-10-09 CL CL2007002906A patent/CL2007002906A1/en unknown
2009
- 2009-05-08 ZA ZA200903205A patent/ZA200903205B/en unknown
- 2009-05-08 NO NO20091815A patent/NO20091815L/en not_active Application Discontinuation

Also Published As

Publication number	Publication date
EP2082096A1 (en)	2009-07-29
AR063160A1 (en)	2008-12-30
PT2082096E (en)	2013-04-26
UY30634A1 (en)	2007-11-30
ES2403371T3 (en)	2013-05-17
NO20091815L (en)	2009-07-10
EP2082096B1 (en)	2013-02-20
CL2007002906A1 (en)	2008-05-02
EA013901B1 (en)	2010-08-30
WO2008044988A1 (en)	2008-04-17
EA200970367A1 (en)	2009-08-28
CA2665969C (en)	2016-04-12
BRPI0719893A2 (en)	2014-05-06
CA2665969A1 (en)	2008-04-17

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