FI971401A0 - Behandling av kemisk massa med ett kelateringsmedel och ett oxidationsmedel i samband med blekningen - Google Patents

Behandling av kemisk massa med ett kelateringsmedel och ett oxidationsmedel i samband med blekningen

Info

Publication number: FI971401A0
Authority: FI; Finland
Prior art keywords: treatment; chemical pulp; during bleaching; oxidizing agent; chelating agent
Prior art date: 1994-10-07

Application number

FI971401A

Other languages

English (en)

Finnish (fi)

Other versions

FI971401A (sv

Inventor

Ulf Germgaord

Rolf Boman

Kenneth Hafvenstroem

Jonas Lindquist

Original Assignee

Sunds Defibrator Ind Ab

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.)

1994-10-07

Filing date

1997-04-04

Publication date

1997-04-04

1997-04-04 Application filed by Sunds Defibrator Ind Ab filed Critical Sunds Defibrator Ind Ab

1997-04-04 Publication of FI971401A0 publication Critical patent/FI971401A0/sv

1997-04-04 Publication of FI971401A publication Critical patent/FI971401A/sv

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
- D21C9/1026—Other features in bleaching processes
- D21C9/1042—Use of chelating agents
- 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
- D21C9/1005—Pretreatment of the pulp, e.g. degassing the pulp

Landscapes

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

FI971401A 1994-10-07 1997-04-04 Behandling av kemisk massa med ett kelateringsmedel och ett oxidationsmedel i samband med blekningen FI971401A (sv)

Applications Claiming Priority (2)

Application Number	Priority Date	Filing Date	Title
SE9403396A SE504826C2 (sv)	1994-10-07	1994-10-07	Behandling av kemisk massa med komplexbildare i närvaro av ett oxidationsmedel
PCT/SE1995/001135 WO1996011298A1 (en)	1994-10-07	1995-10-05	Treatment of chemical pulp with a chelating agent and an oxidizing agent in connection with bleaching

Publications (2)

Publication Number	Publication Date
FI971401A0 true FI971401A0 (sv)	1997-04-04
FI971401A FI971401A (sv)	1997-04-04

Family

ID=20395512

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
FI971401A FI971401A (sv)	1994-10-07	1997-04-04	Behandling av kemisk massa med ett kelateringsmedel och ett oxidationsmedel i samband med blekningen

Country Status (10)

Country	Link
EP (1)	EP0784720A1 (sv)
JP (1)	JPH10506965A (sv)
CN (1)	CN1159842A (sv)
AU (1)	AU686024B2 (sv)
BR (1)	BR9509253A (sv)
CA (1)	CA2199257A1 (sv)
FI (1)	FI971401A (sv)
NO (1)	NO971536D0 (sv)
SE (1)	SE504826C2 (sv)
WO (1)	WO1996011298A1 (sv)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
RU2189412C2 (ru) *	1996-09-11	2002-09-20	Солвей Интерокс (Сосьете Аноним)	Способ отбеливания бумажной массы
BE1010617A3 (fr) *	1996-09-11	1998-11-03	Solvay Interox	Procede de blanchiment de pate a papier.
BE1010678A3 (fr) *	1996-10-11	1998-11-03	Solvay Interox	Procede de delignification et de blanchiment de pate a papier chimique.

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
SE420430B (sv) *	1978-02-17	1981-10-05	Mo Och Domsjoe Ab	Forfarande for blekning och extraktion av lignocellulosahaltig material med peroxidhaltiga blekmedel
ATE97179T1 (de) *	1989-06-06	1993-11-15	Eka Nobel Ab	Verfahren zum bleichen von lignocellulose enthaltenden zellstoffen.

1994
- 1994-10-07 SE SE9403396A patent/SE504826C2/sv not_active IP Right Cessation
1995
- 1995-10-05 EP EP95934912A patent/EP0784720A1/en not_active Withdrawn
- 1995-10-05 CA CA 2199257 patent/CA2199257A1/en not_active Abandoned
- 1995-10-05 AU AU37124/95A patent/AU686024B2/en not_active Ceased
- 1995-10-05 CN CN 95195457 patent/CN1159842A/zh active Pending
- 1995-10-05 BR BR9509253A patent/BR9509253A/pt not_active Application Discontinuation
- 1995-10-05 WO PCT/SE1995/001135 patent/WO1996011298A1/en not_active Application Discontinuation
- 1995-10-05 JP JP8512520A patent/JPH10506965A/ja active Pending
1997
- 1997-04-04 FI FI971401A patent/FI971401A/sv unknown
- 1997-04-04 NO NO971536A patent/NO971536D0/no unknown

Also Published As

Publication number	Publication date
AU3712495A (en)	1996-05-02
CA2199257A1 (en)	1996-04-18
NO971536L (no)	1997-04-04
CN1159842A (zh)	1997-09-17
SE9403396D0 (sv)	1994-10-07
AU686024B2 (en)	1998-01-29
SE504826C2 (sv)	1997-05-12
NO971536D0 (no)	1997-04-04
FI971401A (sv)	1997-04-04
WO1996011298A1 (en)	1996-04-18
EP0784720A1 (en)	1997-07-23
JPH10506965A (ja)	1998-07-07
BR9509253A (pt)	1997-10-21
SE9403396L (sv)	1996-04-08

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