EP0717800A4 - Blanchiment d'une p te a papier a concentration moyenne avec de l'ozone, apres decoloration de cette p te a haute concentration avec de l'ozone - Google Patents

Blanchiment d'une p te a papier a concentration moyenne avec de l'ozone, apres decoloration de cette p te a haute concentration avec de l'ozone

Info

Publication number: EP0717800A4
Authority: EP; European Patent Office
Prior art keywords: consistency ozone; brightening; bleached pulp; ozone; medium
Prior art date: 1993-09-03
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 Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.): Withdrawn

Application number

EP94928024A

Other languages

German (de)

English (en)

Other versions

EP0717800A1 (fr

Inventor

Spencer W Eachus

Omar F Ali

George Pangalos

Bruce F Griggs

Thomas P Gandek

Michael A Pikulin

Allen Rosen

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.)

Union Camp Patent Holding Inc

Original Assignee

Union Camp Patent Holding Inc

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.)

1993-09-03

Filing date

1994-09-01

Publication date

1998-10-28

1994-09-01 Application filed by Union Camp Patent Holding Inc filed Critical Union Camp Patent Holding Inc

1996-06-26 Publication of EP0717800A1 publication Critical patent/EP0717800A1/fr

1998-10-28 Publication of EP0717800A4 publication Critical patent/EP0717800A4/fr

Status Withdrawn legal-status Critical Current

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
- D21C9/153—Bleaching ; Apparatus therefor with oxygen or its allotropic modifications with ozone
- 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
- D21C9/1057—Multistage, with compounds cited in more than one sub-group D21C9/10, D21C9/12, D21C9/16
- 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
- D21C9/163—Bleaching ; Apparatus therefor with per compounds with peroxides

Landscapes

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

EP94928024A 1993-09-03 1994-09-01 Blanchiment d'une p te a papier a concentration moyenne avec de l'ozone, apres decoloration de cette p te a haute concentration avec de l'ozone Withdrawn EP0717800A4 (fr)

Applications Claiming Priority (3)

Application Number	Priority Date	Filing Date	Title
US11677693A	1993-09-03	1993-09-03
US116776		1993-09-03
PCT/US1994/010050 WO1995006773A1 (fr)	1993-09-03	1994-09-01	Blanchiment d'une pâte a papier a concentration moyenne avec de l'ozone, apres decoloration de cette pâte a haute concentration avec de l'ozone

Publications (2)

Publication Number	Publication Date
EP0717800A1 EP0717800A1 (fr)	1996-06-26
EP0717800A4 true EP0717800A4 (fr)	1998-10-28

Family

ID=22369146

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
EP94928024A Withdrawn EP0717800A4 (fr)	1993-09-03	1994-09-01	Blanchiment d'une p te a papier a concentration moyenne avec de l'ozone, apres decoloration de cette p te a haute concentration avec de l'ozone

Country Status (8)

Country	Link
EP (1)	EP0717800A4 (fr)
AU (1)	AU7721694A (fr)
BR (1)	BR9407457A (fr)
CA (1)	CA2170733A1 (fr)
FI (1)	FI960973A7 (fr)
SE (1)	SE9600773L (fr)
WO (1)	WO1995006773A1 (fr)
ZA (1)	ZA946807B (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
GB2382592A (en) *	2001-11-30	2003-06-04	Sca Hygiene Prod Gmbh	Use of ozone to enhance the wet strength of fibrous cellulosic material
GB2391011A (en) *	2002-07-19	2004-01-28	Crosmill Ltd	Bleaching cellulose suspensions
US9932709B2 (en)	2013-03-15	2018-04-03	Ecolab Usa Inc.	Processes and compositions for brightness improvement in paper production
FR3007044B1 (fr) *	2013-06-13	2016-01-15	Air Liquide	Procede de traitement des pates papetieres chimiques par traitement a l'ozone en presence d'ions magnesium

Citations (3)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
EP0426652A1 (fr) *	1989-10-30	1991-05-08	Lenzing Aktiengesellschaft	Procédé exempt de chlore pour le blanchiment de pâtes cellulosiques
WO1991018145A1 (fr) *	1990-05-17	1991-11-28	Union Camp Corporation	Procede moins polluant de blanchiment de matieres lignocellulosiques
EP0557112A1 (fr) *	1992-02-21	1993-08-25	Kamyr, Inc.	Procédé de mise en pâte et de blanchiment sans chlore

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US5173153A (en) *	1991-01-03	1992-12-22	Union Camp Patent Holding, Inc.	Process for enhanced oxygen delignification using high consistency and a split alkali addition
DE69004492T3 (de) *	1989-06-06	2001-11-15	Eka Nobel Ab, Bohus	Verfahren zum Bleichen von Lignocellulose enthaltenden Zellstoffen.
US5328564A (en) *	1990-09-17	1994-07-12	Kamyr, Inc.	Modified digestion of paper pulp followed by ozone bleaching

1994
- 1994-09-01 CA CA002170733A patent/CA2170733A1/fr not_active Abandoned
- 1994-09-01 EP EP94928024A patent/EP0717800A4/fr not_active Withdrawn
- 1994-09-01 WO PCT/US1994/010050 patent/WO1995006773A1/fr not_active Ceased
- 1994-09-01 AU AU77216/94A patent/AU7721694A/en not_active Abandoned
- 1994-09-01 BR BR9407457A patent/BR9407457A/pt not_active Application Discontinuation
- 1994-09-05 ZA ZA946807A patent/ZA946807B/xx unknown
1996
- 1996-02-28 SE SE9600773A patent/SE9600773L/xx not_active Application Discontinuation
- 1996-03-01 FI FI960973A patent/FI960973A7/fi unknown

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
EP0426652A1 (fr) *	1989-10-30	1991-05-08	Lenzing Aktiengesellschaft	Procédé exempt de chlore pour le blanchiment de pâtes cellulosiques
WO1991018145A1 (fr) *	1990-05-17	1991-11-28	Union Camp Corporation	Procede moins polluant de blanchiment de matieres lignocellulosiques
EP0557112A1 (fr) *	1992-02-21	1993-08-25	Kamyr, Inc.	Procédé de mise en pâte et de blanchiment sans chlore

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of WO9506773A1 *

Also Published As

Publication number	Publication date
FI960973A0 (fi)	1996-03-01
SE9600773D0 (sv)	1996-02-28
CA2170733A1 (fr)	1995-03-09
ZA946807B (en)	1995-06-28
AU7721694A (en)	1995-03-22
BR9407457A (pt)	1996-11-12
EP0717800A1 (fr)	1996-06-26
FI960973A7 (fi)	1996-04-30
SE9600773L (sv)	1996-04-18
WO1995006773A1 (fr)	1995-03-09

Publication	Publication Date	Title
HRP930459B1 (en)	1998-12-31	Process for the chlorine-free bleaching of pulp
AU1239797A (en)	1997-03-13	Washing of pulp
NO964609L (no)	1996-10-31	Fremgangsmåte for fremstilling av delignifisert og bleket kjemisk papirmasse
ZA931096B (en)	1994-10-17	Modified digestion of paper pulp followed by ozone bleaching
EP0717800A4 (fr)	1998-10-28	Blanchiment d'une p te a papier a concentration moyenne avec de l'ozone, apres decoloration de cette p te a haute concentration avec de l'ozone
ZA955827B (en)	1996-02-21	Bleaching of high consistency lignocellulosic pulp
ZA911062B (en)	1991-11-27	Bleaching of paper pulp
AU636766B2 (en)	1993-05-06	Pneumatic reactor ozone bleaching of paper pulp
AU1877592A (en)	1993-01-08	Bleaching and delignification of pulp
ZA94680B (en)	1994-08-02	Fluorescent whitening of paper
NO953440D0 (no)	1995-09-01	Fremgangsmåte for delignifisering av kjemisk papirmasse
ZA955971B (en)	1996-02-21	Method of bleaching pulp
ZA908684B (en)	1991-08-28	Method for the chlorine-free bleaching of pulps
FI964306L (fi)	1996-12-18	Selluloosamassojen happivalkaisu
FI945202L (fi)	1995-05-05	Kemiallisen massan valkaisu
FI951533L (fi)	1995-03-31	Parannettu suursakeuslignoselluloosamassan valkaisu
FI941238L (fi)	1994-03-16	Menetelmä massan otsonivalkaisussa
AU7752991A (en)	1991-11-27	Bleaching of chemical pulp
AU6325596A (en)	1997-01-30	Bleaching of lignocellulosic pulp with ozone and peracid
ZA967931B (en)	1997-04-07	Bleaching of pulp
ZA937145B (en)	1994-07-07	Bleaching of high consistency lignocellulosic pulp
AU570673B2 (en)	1988-03-24	Continuous thermomechanical digestion and bleaching of pulp
SE9303037D0 (sv)	1993-09-16	Blekning av pappersmassa
SE9302483L (sv)	1995-01-24	Blekning av massa
SE9303971D0 (sv)	1993-11-30	Blekning av massa

Legal Events

Date	Code	Title	Description
1996-05-10	PUAI	Public reference made under article 153(3) epc to a published international application that has entered the european phase	Free format text: ORIGINAL CODE: 0009012
1996-06-26	17P	Request for examination filed	Effective date: 19960301
1996-06-26	AK	Designated contracting states	Kind code of ref document: A1 Designated state(s): AT BE CH DE DK ES FR GB GR IE IT LI LU MC NL PT
1996-08-14	RIN1	Information on inventor provided before grant (corrected)	Inventor name: ROSEN, ALLEN Inventor name: PIKULIN, MICHAEL, A. Inventor name: GANDEK, THOMAS, P. Inventor name: GRIGGS, BRUCE F. Inventor name: PANGALOS, GEORGE Inventor name: ALI, OMAR, F. Inventor name: EACHUS, SPENCER, W.
1998-10-28	A4	Supplementary search report drawn up and despatched	Effective date: 19980914
1998-10-28	AK	Designated contracting states	Kind code of ref document: A4 Designated state(s): AT BE CH DE DK ES FR GB GR IE IT LI LU MC NL PT
1999-02-10	17Q	First examination report despatched	Effective date: 19981223
1999-09-10	STAA	Information on the status of an ep patent application or granted ep patent	Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN
1999-10-27	18D	Application deemed to be withdrawn	Effective date: 19990504