SE9403074L - Förfarande för blekning av massa - Google Patents

Förfarande för blekning av massa

Info

Publication number: SE9403074L
Authority: SE; Sweden
Prior art keywords: pulp; pulp bleaching; prod; iso; brightness
Prior art date: 1993-09-15

Application number

SE9403074A

Other languages

English (en)

Other versions

SE516353C2 (sv

SE9403074D0 (sv

SE516353E (sv

Inventor

Mattti Nummenaho

Olavi Pikka

Hannu Roenkoenharju

Original Assignee

Ahlstroem Oy

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.)

1993-09-15

Filing date

1994-09-14

Publication date

1995-03-16

Family has litigation

First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=8538599&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=SE9403074(L) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.

1994-09-14 Application filed by Ahlstroem Oy filed Critical Ahlstroem Oy

1994-09-14 Publication of SE9403074D0 publication Critical patent/SE9403074D0/sv

1995-03-16 Publication of SE9403074L publication Critical patent/SE9403074L/sv

2001-12-17 Publication of SE516353C2 publication Critical patent/SE516353C2/sv

2003-09-02 Publication of SE516353E publication Critical patent/SE516353E/sv

Links

238000004076 pulp bleaching Methods 0.000 title abstract 2
238000000034 method Methods 0.000 title 1
KCXVZYZYPLLWCC-UHFFFAOYSA-N EDTA Chemical compound OC(=O)CN(CC(O)=O)CCN(CC(O)=O)CC(O)=O KCXVZYZYPLLWCC-UHFFFAOYSA-N 0.000 abstract 1
QPCDCPDFJACHGM-UHFFFAOYSA-N N,N-bis{2-[bis(carboxymethyl)amino]ethyl}glycine Chemical compound OC(=O)CN(CC(O)=O)CCN(CC(=O)O)CCN(CC(O)=O)CC(O)=O QPCDCPDFJACHGM-UHFFFAOYSA-N 0.000 abstract 1
QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract 1
OSVXSBDYLRYLIG-UHFFFAOYSA-N chlorine dioxide Inorganic materials O=Cl=O OSVXSBDYLRYLIG-UHFFFAOYSA-N 0.000 abstract 1
235000019398 chlorine dioxide Nutrition 0.000 abstract 1
QBWCMBCROVPCKQ-UHFFFAOYSA-N chlorous acid Chemical compound OCl=O QBWCMBCROVPCKQ-UHFFFAOYSA-N 0.000 abstract 1
229910001385 heavy metal Inorganic materials 0.000 abstract 1
229910052760 oxygen Inorganic materials 0.000 abstract 1
239000001301 oxygen Substances 0.000 abstract 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
- D21C9/16—Bleaching ; Apparatus therefor with per compounds
- D21C9/163—Bleaching ; Apparatus therefor with per compounds with peroxides
- 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
- D21C9/1026—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)

SE9403074A 1993-09-15 1994-09-14 Förfarande för blekning av massa SE516353E (sv)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
FI934056A FI98224B (sv)	1993-09-15	1993-09-15	Förfarande för blekning av massa

Publications (4)

Publication Number	Publication Date
SE9403074D0 SE9403074D0 (sv)	1994-09-14
SE9403074L true SE9403074L (sv)	1995-03-16
SE516353C2 SE516353C2 (sv)	2001-12-17
SE516353E SE516353E (sv)	2003-09-02

Family

ID=8538599

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
SE9403074A SE516353E (sv)	1993-09-15	1994-09-14	Förfarande för blekning av massa

Country Status (3)

Country	Link
CA (1)	CA2132056C (sv)
FI (1)	FI98224B (sv)
SE (1)	SE516353E (sv)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US6514380B1 (en) *	1995-03-08	2003-02-04	Andritz Oy	Treatment of chemical pulp
BR9708265A (pt)	1996-03-26	1999-04-13	Sunds Defibrator Ind Ab	Processo de deslignificação por oxigénio de pasta química em dois estágios
CN100417500C (zh)	1998-06-17	2008-09-10	尼勒纤维纸浆和纸公司	芦竹浆、纸制品、以及刨花板
US20030029589A1 (en) *	1998-06-17	2003-02-13	Nile Fiber Pulp & Paper, Inc.	Total chlorine free bleaching of Arundo donax pulp
FI117391B (sv)	2000-05-16	2006-09-29	Andritz Oy	Förfarande och anordning för behandling av massa

1993
- 1993-09-15 FI FI934056A patent/FI98224B/sv active
1994
- 1994-09-14 CA CA002132056A patent/CA2132056C/en not_active Expired - Fee Related
- 1994-09-14 SE SE9403074A patent/SE516353E/sv not_active IP Right Cessation

Also Published As

Publication number	Publication date
CA2132056C (en)	1998-11-24
FI98224B (sv)	1997-01-31
CA2132056A1 (en)	1995-03-16
FI934056A0 (sv)	1993-09-15
FI934056L (sv)	1995-03-16
SE516353C2 (sv)	2001-12-17
SE9403074D0 (sv)	1994-09-14
SE516353E (sv)	2003-09-02

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Legal Events

Date	Code	Title	Description
2003-09-02	RPOP	Patent has been republished in amended form after opposition
2010-05-05	NUG	Patent has lapsed