NO964968L - Fremgangsmåte ved fjerning av metallforbindelser i lignocelluloseholdig masse - Google Patents

Fremgangsmåte ved fjerning av metallforbindelser i lignocelluloseholdig masse

Info

Publication number: NO964968L
Authority: NO; Norway
Prior art keywords: pct; metal compounds; pulp; during; oxygen bleaching
Prior art date: 1994-05-24

Application number

NO964968A

Other languages

English (en)

Norwegian (no)

Other versions

NO964968D0 (no

Inventor

Hans Olov Samuelsson

Original Assignee

Aga Ag

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.)

1994-05-24

Filing date

1996-11-22

Publication date

1996-11-22

1996-11-22 Application filed by Aga Ag filed Critical Aga Ag

1996-11-22 Publication of NO964968D0 publication Critical patent/NO964968D0/no

1996-11-22 Publication of NO964968L publication Critical patent/NO964968L/no

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
- D21C9/147—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
- D21C9/1036—Use of compounds accelerating or improving the efficiency of the processes

Landscapes

Life Sciences & Earth Sciences (AREA)
Engineering & Computer Science (AREA)
Wood Science & Technology (AREA)
Paper (AREA)
Polysaccharides And Polysaccharide Derivatives (AREA)
Compounds Of Unknown Constitution (AREA)

NO964968A 1994-05-24 1996-11-22 Fremgangsmåte ved fjerning av metallforbindelser i lignocelluloseholdig masse NO964968L (no)

Applications Claiming Priority (2)

Application Number	Priority Date	Filing Date	Title
SE9401771A SE9401771D0 (sv)	1994-05-24	1994-05-24	Process for removal of metal compounds in lignocellulosic pulp
PCT/SE1995/000433 WO1995032332A1 (en)	1994-05-24	1995-04-21	Process for removal of metal compounds in lignocellulosic pulp

Publications (2)

Publication Number	Publication Date
NO964968D0 NO964968D0 (no)	1996-11-22
NO964968L true NO964968L (no)	1996-11-22

Family

ID=20394098

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
NO964968A NO964968L (no)	1994-05-24	1996-11-22	Fremgangsmåte ved fjerning av metallforbindelser i lignocelluloseholdig masse

Country Status (13)

Country	Link
US (1)	US5985097A (ja)
EP (1)	EP0763156B1 (ja)
JP (1)	JPH10503810A (ja)
AT (1)	ATE205899T1 (ja)
BR (1)	BR9507751A (ja)
CA (1)	CA2191081C (ja)
DE (1)	DE69522802T2 (ja)
ES (1)	ES2161891T3 (ja)
FI (1)	FI964632A7 (ja)
NO (1)	NO964968L (ja)
PT (1)	PT763156E (ja)
SE (1)	SE9401771D0 (ja)
WO (1)	WO1995032332A1 (ja)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US6331354B1 (en) *	1996-08-23	2001-12-18	Weyerhaeuser Company	Alkaline pulp having low average degree of polymerization values and method of producing the same
US6605350B1 (en) *	1996-08-23	2003-08-12	Weyerhaeuser Company	Sawdust alkaline pulp having low average degree of polymerization values and method of producing the same
US6790527B1 (en)	2003-04-16	2004-09-14	Weyerhaeuser Company	Lyocell fiber from unbleached pulp
US20040207110A1 (en) *	2003-04-16	2004-10-21	Mengkui Luo	Shaped article from unbleached pulp and the process
US7097737B2 (en) *	2003-04-16	2006-08-29	Weyerhaeuser Company	Method of making a modified unbleached pulp for lyocell products
US6833187B2 (en) *	2003-04-16	2004-12-21	Weyerhaeuser Company	Unbleached pulp for lyocell products
US20060065377A1 (en) *	2004-09-30	2006-03-30	Mengkui Luo	High PH treatment of pulp in a bleach sequence to produce pulp having low D.P. and low copper number for use in lyocell manufacture
US20060070711A1 (en) *	2004-09-30	2006-04-06	Mengkui Luo	Low pH treatment of pulp in a bleach sequence to produce pulp having low D.P. and low copper number for use in lyocell manufacture
US20090090478A1 (en) *	2007-10-05	2009-04-09	Hollomon Martha G	Selectivity improvement in oxygen delignification and bleaching of lignocellulose pulp using singlet oxygen

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
SE360128C (sv) *	1970-08-25	1983-10-31	Mo Och Domsjoe Ab	Sett att bleka cellulosamassa med en syreinnehallande gas i nervaro av alkali
US4087318A (en) *	1974-03-14	1978-05-02	Mo Och Domsjo Aktiebolag	Oxygen-alkali delignification of lignocellulosic material in the presence of a manganese compound
GB1505529A (en) *	1974-06-14	1978-03-30	Mo Och Domsjoe Ab	Method for the oxygen-gas delignification of lignocellulosic material and apparatus for carrying out the method
WO1992017639A1 (en) *	1991-04-08	1992-10-15	International Paper Company	Method for reducing colored matter from bleach effluent using a dzd bleach sequence
WO1994010375A1 (en) *	1992-10-26	1994-05-11	Kamyr, Inc.	Displacement chelate treatment of pulp

1994
- 1994-05-24 SE SE9401771A patent/SE9401771D0/xx unknown
1995
- 1995-04-21 DE DE69522802T patent/DE69522802T2/de not_active Expired - Fee Related
- 1995-04-21 AT AT95920325T patent/ATE205899T1/de active
- 1995-04-21 CA CA002191081A patent/CA2191081C/en not_active Expired - Fee Related
- 1995-04-21 ES ES95920325T patent/ES2161891T3/es not_active Expired - Lifetime
- 1995-04-21 EP EP95920325A patent/EP0763156B1/en not_active Expired - Lifetime
- 1995-04-21 BR BR9507751A patent/BR9507751A/pt active Search and Examination
- 1995-04-21 PT PT95920325T patent/PT763156E/pt unknown
- 1995-04-21 US US08/737,221 patent/US5985097A/en not_active Expired - Fee Related
- 1995-04-21 JP JP7530226A patent/JPH10503810A/ja active Pending
- 1995-04-21 FI FI964632A patent/FI964632A7/fi unknown
- 1995-04-21 WO PCT/SE1995/000433 patent/WO1995032332A1/en not_active Ceased
1996
- 1996-11-22 NO NO964968A patent/NO964968L/no not_active Application Discontinuation

Also Published As

Publication number	Publication date
DE69522802D1 (de)	2001-10-25
NO964968D0 (no)	1996-11-22
US5985097A (en)	1999-11-16
ES2161891T3 (es)	2001-12-16
PT763156E (pt)	2002-02-28
FI964632A0 (fi)	1996-11-20
FI964632L (fi)	1997-01-14
WO1995032332A1 (en)	1995-11-30
BR9507751A (pt)	1997-08-19
DE69522802T2 (de)	2002-04-11
ATE205899T1 (de)	2001-10-15
SE9401771D0 (sv)	1994-05-24
JPH10503810A (ja)	1998-04-07
FI964632A7 (fi)	1997-01-14
CA2191081C (en)	2001-07-03
EP0763156A1 (en)	1997-03-19
EP0763156B1 (en)	2001-09-19
CA2191081A1 (en)	1995-11-30

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Legal Events

Date	Code	Title	Description
2003-12-08	FC2A	Withdrawal, rejection or dismissal of laid open patent application