ATE141972T1 - Verfahren zum bleichen von lignocellulose- enthaltendem zellstoff - Google Patents

Verfahren zum bleichen von lignocellulose- enthaltendem zellstoff

Info

Publication number: ATE141972T1
Authority: AT; Austria
Prior art keywords: pulp; bleaching; brightness; stages; lignocellulose
Prior art date: 1992-11-27

Application number

AT94901142T

Other languages

German (de)

English (en)

Inventor

Magnus Linsten

Jiri Basta

Ann-Sofie Haellstroem

Original Assignee

Eka Chemicals 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.)

1992-11-27

Filing date

1993-11-25

Publication date

1996-09-15

Family has litigation

First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=26661599&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=ATE141972(T1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.

1992-11-27 Priority claimed from SE9203584A external-priority patent/SE9203584D0/xx

1993-01-26 Priority claimed from SE9300225A external-priority patent/SE9300225D0/xx

1993-11-25 Application filed by Eka Chemicals Ab filed Critical Eka Chemicals Ab

1996-09-15 Application granted granted Critical

1996-09-15 Publication of ATE141972T1 publication Critical patent/ATE141972T1/de

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
- 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)
Polysaccharides And Polysaccharide Derivatives (AREA)
Micro-Organisms Or Cultivation Processes Thereof (AREA)

AT94901142T 1992-11-27 1993-11-25 Verfahren zum bleichen von lignocellulose- enthaltendem zellstoff ATE141972T1 (de)

Applications Claiming Priority (2)

Application Number	Priority Date	Filing Date	Title
SE9203584A SE9203584D0 (sv)	1992-11-27	1992-11-27	Foerfarande foer blekning av lignocellulosahaltig massa
SE9300225A SE9300225D0 (sv)	1993-01-26	1993-01-26	Foerfarande foer blekning av lignocellulosahaltig massa

Publications (1)

Publication Number	Publication Date
ATE141972T1 true ATE141972T1 (de)	1996-09-15

Family

ID=26661599

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
AT94901142T ATE141972T1 (de)	1992-11-27	1993-11-25	Verfahren zum bleichen von lignocellulose- enthaltendem zellstoff

Country Status (16)

Country	Link
EP (1)	EP0670929B2 (fr)
JP (1)	JPH08503749A (fr)
AT (1)	ATE141972T1 (fr)
AU (1)	AU671337B2 (fr)
BR (1)	BR9307520A (fr)
CA (1)	CA2149649C (fr)
CZ (1)	CZ285246B6 (fr)
DE (1)	DE69304342T3 (fr)
ES (1)	ES2091121T3 (fr)
FI (1)	FI118572B (fr)
MX (1)	MX9307413A (fr)
NO (1)	NO306737B1 (fr)
NZ (1)	NZ258273A (fr)
PL (1)	PL309190A1 (fr)
RU (1)	RU2097463C1 (fr)
WO (1)	WO1994012722A1 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
BE1007757A3 (fr) *	1993-11-10	1995-10-17	Solvay Interox	Procede pour le blanchiment d'une pate a papier chimique.
US5656130A (en) *	1995-04-28	1997-08-12	Union Camp Holding, Inc.	Ambient temperature pulp bleaching with peroxyacid salts
USH1690H (en) *	1995-07-20	1997-11-04	Nye; Jeffrey	Process for bleaching kraft pulp
SE9503004L (sv) *	1995-08-30	1997-03-01	Sunds Defibrator Ind Ab	Blekning av massa
DE19704054C2 (de) *	1997-02-04	2000-08-10	Stockhausen Chem Fab Gmbh	Verfahren zur Herstellung von Faserstoffen mit verbesserten Eigenschaften
US6702921B2 (en) *	2001-05-01	2004-03-09	Ondeo Nalco Company	Methods to enhance pulp bleaching and delignification using an organic sulfide chelating agent
DE602004011911T9 (de) *	2004-06-14	2009-01-02	Warwick International Group Ltd., Holywell	Aktivator zum Zellstoffbleichen

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE2219505C3 (de) †	1972-04-21	1974-10-17	Deutsche Gold- Und Silber-Scheideanstalt Vormals Roessler, 6000 Frankfurt	Chlorfreie Mehrstufenbleiche von Zellstoff
DE3005947B1 (de) †	1980-02-16	1981-01-29	Degussa	Verfahren zur Bleiche von Zellstoffen mittels organischer Persaeure
JPS5721591A (en) †	1980-07-11	1982-02-04	Mitsubishi Gas Chemical Co	Peroxide bleaching of wood pulp
DE402335T1 (de) *	1989-06-06	1992-04-09	Eka Nobel Ab, Surte	Verfahren zum bleichen von lignocellulose enthaltenden zellstoffen.
US5091054A (en) *	1989-08-18	1992-02-25	Degussa Corporation	Process for bleaching and delignification of lignocellulosic
BE1004674A3 (fr) *	1991-03-11	1993-01-12	Interox Internat Sa	Procede pour le blanchiment d'une pate a papier chimique et application de ce procede au blanchiment d'une pate kraft.
DE4114135A1 (de) †	1991-04-30	1992-11-05	Sueddeutsche Kalkstickstoff	Verfahren zur chlorfreien bleiche und delignifizierung von alkalizellstoff
EP0844328A3 (fr) *	1991-10-04	1998-07-15	Solvay Interox, Inc.	Procédé pour l'amélioration de la sélectivité de la délignification d'une pâte à papier chimique
BE1006057A3 (fr) †	1992-07-06	1994-05-03	Solvay Interox	Procede pour la delignification d'une pate a papier chimique.

1993
- 1993-11-25 RU RU9595113460A patent/RU2097463C1/ru active
- 1993-11-25 WO PCT/SE1993/001018 patent/WO1994012722A1/fr not_active Ceased
- 1993-11-25 JP JP6513051A patent/JPH08503749A/ja active Pending
- 1993-11-25 BR BR9307520-0A patent/BR9307520A/pt not_active IP Right Cessation
- 1993-11-25 AU AU55831/94A patent/AU671337B2/en not_active Ceased
- 1993-11-25 AT AT94901142T patent/ATE141972T1/de not_active IP Right Cessation
- 1993-11-25 ES ES94901142T patent/ES2091121T3/es not_active Expired - Lifetime
- 1993-11-25 NZ NZ258273A patent/NZ258273A/en unknown
- 1993-11-25 PL PL93309190A patent/PL309190A1/xx unknown
- 1993-11-25 EP EP94901142A patent/EP0670929B2/fr not_active Expired - Lifetime
- 1993-11-25 CZ CZ951328A patent/CZ285246B6/cs not_active IP Right Cessation
- 1993-11-25 CA CA002149649A patent/CA2149649C/fr not_active Expired - Fee Related
- 1993-11-25 MX MX9307413A patent/MX9307413A/es not_active IP Right Cessation
- 1993-11-25 DE DE69304342T patent/DE69304342T3/de not_active Expired - Fee Related
1995
- 1995-05-24 FI FI952551A patent/FI118572B/fi active IP Right Grant
- 1995-05-26 NO NO952074A patent/NO306737B1/no not_active IP Right Cessation

Also Published As

Publication number	Publication date
RU95113460A (ru)	1996-12-27
FI952551A7 (fi)	1995-05-24
DE69304342D1 (de)	1996-10-02
ES2091121T3 (es)	1996-10-16
EP0670929A1 (fr)	1995-09-13
NO306737B1 (no)	1999-12-13
JPH08503749A (ja)	1996-04-23
BR9307520A (pt)	1999-08-31
MX9307413A (es)	1994-07-29
WO1994012722A1 (fr)	1994-06-09
FI952551A0 (fi)	1995-05-24
RU2097463C1 (ru)	1997-11-27
FI118572B (fi)	2007-12-31
AU671337B2 (en)	1996-08-22
NO952074L (no)	1995-07-26
NO952074D0 (no)	1995-05-26
DE69304342T2 (de)	1997-03-06
PL309190A1 (en)	1995-09-18
EP0670929B2 (fr)	2003-10-22
CZ285246B6 (cs)	1999-06-16
CA2149649C (fr)	2000-09-19
NZ258273A (en)	1996-08-27
DE69304342T3 (de)	2004-07-01
AU5583194A (en)	1994-06-22
EP0670929B1 (fr)	1996-08-28
CZ132895A3 (en)	1996-01-17

Legal Events

Date	Code	Title	Description
1997-04-15	UEP	Publication of translation of european patent specification
2003-08-15	REN	Ceased due to non-payment of the annual fee

Publication	Publication Date	Title
ATE130888T1 (de)	1995-12-15	Verfahren zum bleichen von lignocellulose enthaltendem material.
ATE173518T1 (de)	1998-12-15	Verfahren zum bleichen von lignocellulose- enthaltendem zellstoff
DE69004492D1 (de)	1993-12-16	Verfahren zum Bleichen von Lignocellulose enthaltenden Zellstoffen.
DE69100060D1 (de)	1993-05-13	Verfahren zum bleichen von lignocellulose enthaltendem material.
ATE141972T1 (de)	1996-09-15	Verfahren zum bleichen von lignocellulose- enthaltendem zellstoff
SE9203366L (sv)	1994-05-12	Förfarande vid delignifiering och/eller blekning av cellulosamassa
DE69325070D1 (de)	1999-07-01	Verfahren zum Bleichen von chemisch aufgelösten Lignocellulose enthaltenden Zellstoffen
RU95114367A (ru)	1996-12-27	Способ делигнификации и отбеливания лигноцеллюлозосодержащей пульпы
SE9502087D0 (sv)	1995-06-07	Förfarande för förbehandling av massa som skall blekas med peroxid
FI964843A0 (fi)	1996-12-04	Menetelmä massan käsittelemiseksi