FI934056L - Förfarande för blekning av massa - Google Patents

Förfarande för blekning av massa Download PDF

Info

Publication number: FI934056L
Authority: FI; Finland
Prior art keywords: pulp; subscript; agents; following; bleaching
Prior art date: 1993-09-15

Application number

FI934056A

Other languages

English (en)

Finnish (fi)

Other versions

FI934056A0 (sv

FI98224B (sv

Inventor

Matti 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

1993-09-15

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=FI934056(L) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.

1993-09-15 Application filed by Ahlstroem Oy filed Critical Ahlstroem Oy

1993-09-15 Priority to FI934056A priority Critical patent/FI98224B/sv

1993-09-15 Publication of FI934056A0 publication Critical patent/FI934056A0/sv

1994-09-14 Priority to CA002132056A priority patent/CA2132056C/en

1994-09-14 Priority to SE9403074A priority patent/SE516353E/sv

1995-03-16 Publication of FI934056L publication Critical patent/FI934056L/sv

1997-01-31 Application granted granted Critical

1997-01-31 Publication of FI98224B publication Critical patent/FI98224B/sv

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)

FI934056A 1993-09-15 1993-09-15 Förfarande för blekning av massa FI98224B (sv)

Priority Applications (3)

Application Number	Priority Date	Filing Date	Title
FI934056A FI98224B (sv)	1993-09-15	1993-09-15	Förfarande för blekning av massa
CA002132056A CA2132056C (en)	1993-09-15	1994-09-14	A method of bleaching pulp
SE9403074A SE516353E (sv)	1993-09-15	1994-09-14	Förfarande för blekning av massa

Applications Claiming Priority (2)

Application Number	Priority Date	Filing Date	Title
FI934056		1993-09-15
FI934056A FI98224B (sv)	1993-09-15	1993-09-15	Förfarande för blekning av massa

Publications (3)

Publication Number	Publication Date
FI934056A0 FI934056A0 (sv)	1993-09-15
FI934056L true FI934056L (sv)	1995-03-16
FI98224B FI98224B (sv)	1997-01-31

Family

ID=8538599

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
FI934056A FI98224B (sv)	1993-09-15	1993-09-15	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
US20030029589A1 (en) *	1998-06-17	2003-02-13	Nile Fiber Pulp & Paper, Inc.	Total chlorine free bleaching of Arundo donax pulp
JP5302485B2 (ja)	1998-06-17	2013-10-02	トゥリーフリー・バイオマス・ソリューション・インコーポレーテッド	アルンド・ドナクスのパルプ、紙製品、及びパーティクルボード
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 SE SE9403074A patent/SE516353E/sv not_active IP Right Cessation
- 1994-09-14 CA CA002132056A patent/CA2132056C/en not_active Expired - Fee Related

Also Published As

Publication number	Publication date
SE516353C2 (sv)	2001-12-17
CA2132056C (en)	1998-11-24
SE9403074L (sv)	1995-03-16
SE9403074D0 (sv)	1994-09-14
FI934056A0 (sv)	1993-09-15
SE516353E (sv)	2003-09-02
FI98224B (sv)	1997-01-31
CA2132056A1 (en)	1995-03-16

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Legal Events

Date	Code	Title	Description
1997-01-07	BB	Publication of examined application
1997-01-09	GB	Transfer or assigment of application	Owner name: AHLSTROM MACHINERY OY
2005-03-02	FCK	Appeal rejected	Free format text: APPLICATION REJECTED
2005-05-04	RF	Appeal filed
2006-06-16	FCK	Appeal rejected	Free format text: APPLICATION REJECTED