FI970304A - Menetelmä korkeasaanto- tai kierrätysmassan valkaisemiseksi - Google Patents

Menetelmä korkeasaanto- tai kierrätysmassan valkaisemiseksi Download PDF

Info

Publication number: FI970304A
Authority: FI; Finland
Prior art keywords: high yield; recycled pulp; bleaching high; bleaching; pulp
Prior art date: 1996-05-30

Application number

FI970304A

Other languages

English (en)

Swedish (sv)

Other versions

FI970304A0 (fi

FI105932B (fi

Inventor

Jukka Jaekaerae

Aarto Paren

Reijo Aksela

Ilkka Renvall

Original Assignee

Kemira Chemicals 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.)

1996-05-30

Filing date

1997-01-24

Publication date

1997-12-01

1996-05-30 Priority claimed from FI962261A external-priority patent/FI112075B/fi

1997-01-24 Application filed by Kemira Chemicals Oy filed Critical Kemira Chemicals Oy

1997-01-24 Priority to FI970304A priority Critical patent/FI105932B/fi

1997-01-24 Publication of FI970304A0 publication Critical patent/FI970304A0/fi

1997-05-30 Priority to AU29645/97A priority patent/AU2964597A/en

1997-05-30 Priority to PCT/FI1997/000334 priority patent/WO1997045585A1/en

1997-12-01 Publication of FI970304A publication Critical patent/FI970304A/fi

2000-10-31 Application granted granted Critical

2000-10-31 Publication of FI105932B publication Critical patent/FI105932B/fi

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)

FI970304A 1996-05-30 1997-01-24 Menetelmä korkeasaanto- tai kierrätysmassan valkaisemiseksi FI105932B (fi)

Priority Applications (3)

Application Number	Priority Date	Filing Date	Title
FI970304A FI105932B (fi)	1996-05-30	1997-01-24	Menetelmä korkeasaanto- tai kierrätysmassan valkaisemiseksi
AU29645/97A AU2964597A (en)	1996-05-30	1997-05-30	Process for the bleaching of high yield pulp or recycled paper pulp
PCT/FI1997/000334 WO1997045585A1 (en)	1996-05-30	1997-05-30	Process for the bleaching of high yield pulp or recycled paper pulp

Applications Claiming Priority (4)

Application Number	Priority Date	Filing Date	Title
FI962261		1996-05-30
FI962261A FI112075B (fi)	1996-05-30	1996-05-30	N-bis- tai N-tris-[(1,2-dikarboksyyli-etoksi)-etyyli]amiinijohdannaiset, niiden valmistus ja käyttö
FI970304A FI105932B (fi)	1996-05-30	1997-01-24	Menetelmä korkeasaanto- tai kierrätysmassan valkaisemiseksi
FI970304		1997-01-24

Publications (3)

Publication Number	Publication Date
FI970304A0 FI970304A0 (fi)	1997-01-24
FI970304A true FI970304A (fi)	1997-12-01
FI105932B FI105932B (fi)	2000-10-31

Family

ID=26160165

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
FI970304A FI105932B (fi)	1996-05-30	1997-01-24	Menetelmä korkeasaanto- tai kierrätysmassan valkaisemiseksi

Country Status (3)

Country	Link
AU (1)	AU2964597A (fi)
FI (1)	FI105932B (fi)
WO (1)	WO1997045585A1 (fi)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
FI106258B (fi)	1998-03-09	2000-12-29	Kemira Chemicals Oy	Menetelmiä N-bis-[2-(1,2-dikarboksi-etoksi)-etyyli]amiinijohdannaisen valmistamiseksi sekä menetelmien tuotteet ja niiden käytöt
US8361571B2 (en)	2008-06-20	2013-01-29	International Paper Company	Composition and recording sheet with improved optical properties
FI122829B (fi)	2010-06-02	2012-07-31	Kemira Oyj	Menetelmä kelatointiaineiden seoksen valmistamiseksi

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
CA1340348C (en) *	1989-03-23	1999-01-26	Michel Barbe	Bleaching process for the production of high bright pulps
DE4340043A1 (de) *	1993-11-24	1995-06-01	Henkel Kgaa	Verwendung Stickstoff-haltiger Komplexbildner bei der Holzstoffbleiche
CA2173824A1 (en) *	1995-04-27	1996-10-28	Brian A. Parker	Ethylenediaminetriacetic acid and salts thereof as chelating agents in pulp bleaching

1997
- 1997-01-24 FI FI970304A patent/FI105932B/fi not_active IP Right Cessation
- 1997-05-30 WO PCT/FI1997/000334 patent/WO1997045585A1/en active Application Filing
- 1997-05-30 AU AU29645/97A patent/AU2964597A/en not_active Abandoned

Also Published As

Publication number	Publication date
AU2964597A (en)	1998-01-05
WO1997045585A1 (en)	1997-12-04
FI970304A0 (fi)	1997-01-24
FI105932B (fi)	2000-10-31

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Legal Events

Date	Code	Title	Description
2017-02-21	MA	Patent expired