AU6839996A - Treatment of pulp with chelating agent in at least two mixing steps without intermediate washing - Google Patents

Treatment of pulp with chelating agent in at least two mixing steps without intermediate washing

Info

Publication number: AU6839996A
Authority: AU; Australia
Prior art keywords: pulp; chelating agent; mixing steps; treatment; intermediate washing
Prior art date: 1995-08-24
Legal status (The legal status 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 status listed.): Abandoned

Application number

AU68399/96A

Other languages

English (en)

Inventor

Ulf Germgard

Jonas Lindquist

Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)

Valmet AB

Original Assignee

Sunds Defibrator Industries AB

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.)

1995-08-24

Filing date

1996-08-09

Publication date

1997-03-19

Family has litigation

First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=20399294&utm_source=***_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=AU6839996(A) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.

1996-08-09 Application filed by Sunds Defibrator Industries AB filed Critical Sunds Defibrator Industries AB

1997-03-19 Publication of AU6839996A publication Critical patent/AU6839996A/en

Status Abandoned legal-status Critical Current

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
- D21C9/1042—Use of chelating agents

Landscapes

Life Sciences & Earth Sciences (AREA)
Engineering & Computer Science (AREA)
Wood Science & Technology (AREA)
Paper (AREA)
Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
Cosmetics (AREA)
Chemical Or Physical Treatment Of Fibers (AREA)
Detergent Compositions (AREA)

AU68399/96A 1995-08-24 1996-08-09 Treatment of pulp with chelating agent in at least two mixing steps without intermediate washing Abandoned AU6839996A (en)

Applications Claiming Priority (3)

Application Number	Priority Date	Filing Date	Title
SE9502962A SE504803C2 (sv)	1995-08-24	1995-08-24	Behandling av massa med komplexbildare i minst två blandningssteg utan mellanliggande tvätt
SE9502962		1995-08-24
PCT/SE1996/000996 WO1997008380A1 (en)	1995-08-24	1996-08-09	Treatment of pulp with chelating agent in at least two mixing steps without intermediate washing

Publications (1)

Publication Number	Publication Date
AU6839996A true AU6839996A (en)	1997-03-19

Family

ID=20399294

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
AU68399/96A Abandoned AU6839996A (en)	1995-08-24	1996-08-09	Treatment of pulp with chelating agent in at least two mixing steps without intermediate washing

Country Status (11)

Country	Link
EP (1)	EP0846199B1 (sv)
AT (1)	ATE198916T1 (sv)
AU (1)	AU6839996A (sv)
BR (1)	BR9610199A (sv)
CA (1)	CA2229212A1 (sv)
DE (1)	DE69611680T2 (sv)
ES (1)	ES2153593T3 (sv)
NO (1)	NO980753L (sv)
PT (1)	PT846199E (sv)
SE (1)	SE504803C2 (sv)
WO (1)	WO1997008380A1 (sv)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
SE508239C2 (sv) *	1997-01-03	1998-09-21	Sunds Defibrator Ind Ab	Behandling av massa med komplexbildare i minst ett blandningssteg, utan användning av blektorn
WO2009154898A1 (en)	2008-06-20	2009-12-23	International Paper Company	Composition and recording sheet with improved optical properties

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
ATE97179T1 (de) *	1989-06-06	1993-11-15	Eka Nobel Ab	Verfahren zum bleichen von lignocellulose enthaltenden zellstoffen.
SE9201477L (sv) *	1992-05-11	1993-06-28	Kamyr Ab	Saett vid blekning av massa utan anvaendning av klorkemikalier
SE502665C2 (sv) *	1993-06-11	1995-12-04	Kvaerner Pulping Tech	Sätt och reaktor för ozonblekning
SE501836C2 (sv) *	1993-09-21	1995-05-22	Sunds Defibrator Ind Ab	Blekning av kemisk massa varvid massan behandlas med komplexbildare före och efter ett ozonsteg

1995
- 1995-08-24 SE SE9502962A patent/SE504803C2/sv not_active IP Right Cessation
1996
- 1996-08-09 AU AU68399/96A patent/AU6839996A/en not_active Abandoned
- 1996-08-09 ES ES96928765T patent/ES2153593T3/es not_active Expired - Lifetime
- 1996-08-09 WO PCT/SE1996/000996 patent/WO1997008380A1/en active IP Right Grant
- 1996-08-09 CA CA002229212A patent/CA2229212A1/en not_active Abandoned
- 1996-08-09 BR BR9610199A patent/BR9610199A/pt not_active Application Discontinuation
- 1996-08-09 EP EP96928765A patent/EP0846199B1/en not_active Expired - Lifetime
- 1996-08-09 AT AT96928765T patent/ATE198916T1/de not_active IP Right Cessation
- 1996-08-09 PT PT96928765T patent/PT846199E/pt unknown
- 1996-08-09 DE DE69611680T patent/DE69611680T2/de not_active Expired - Fee Related
1998
- 1998-02-23 NO NO980753A patent/NO980753L/no not_active Application Discontinuation

Also Published As

Publication number	Publication date
CA2229212A1 (en)	1997-03-06
SE504803C2 (sv)	1997-04-28
NO980753D0 (no)	1998-02-23
WO1997008380A1 (en)	1997-03-06
DE69611680D1 (de)	2001-03-01
SE9502962L (sv)	1997-02-25
EP0846199A1 (en)	1998-06-10
ATE198916T1 (de)	2001-02-15
DE69611680T2 (de)	2001-05-10
NO980753L (no)	1998-02-24
PT846199E (pt)	2001-06-29
EP0846199B1 (en)	2001-01-24
SE9502962D0 (sv)	1995-08-24
ES2153593T3 (es)	2001-03-01
BR9610199A (pt)	1998-08-04

Publication	Publication Date	Title
EP0402335A3 (en)	1991-10-23	Process for bleaching lignocellulose-containing pulps
MY132667A (en)	2007-10-31	Process for the bleaching of pulp
CA2121387A1 (en)	1994-10-21	Method for Bleaching Lignocellulose-Containing Pulp
WO2002052100A3 (en)	2003-06-12	Alkaline extraction stages comprising xylanase
AU6839996A (en)	1997-03-19	Treatment of pulp with chelating agent in at least two mixing steps without intermediate washing
CA2175062A1 (en)	1995-05-04	Aminoalkane diphosphonic acids in pulp bleaching
MX9602927A (es)	1998-04-30	Procedimiento para blanquear pasta pulpa kraft.
ZA957070B (en)	1996-04-15	Pulp bleaching
SE9501623D0 (sv)	1995-05-02	Blekning av massa
SE9301984L (sv)	1994-12-09	Klorfri blekning av kemisk pappersmassa
NZ336204A (en)	1999-11-29	Treatment of pulp with a chelating agent without using a bleaching tower
SE9403396L (sv)	1996-04-08	Blekning av massa
SE9302527D0 (sv)	1993-07-29	Saett vid flerstegsblekning
AU1036595A (en)	1995-05-23	A method of separating metal ions from pulp