ZA93317B - Bleaching of chemical pulp - Google Patents

Bleaching of chemical pulp

Info

Publication number: ZA93317B
Authority: ZA; South Africa
Prior art keywords: bleaching; pulp; thereafter; consistency; complexing agent
Prior art date: 1992-01-21

Application number

ZA93317A

Other languages

English (en)

Inventor

Lars-Aake Lindstroem

Lars Sjoedin

Solveig Norden

Maarten Dahl

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.)

1992-01-21

Filing date

1993-01-18

Publication date

1993-08-19

Family has litigation

First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=20385065&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=ZA93317(B) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.

1993-01-18 Application filed by Sunds Defibrator Ind Ab filed Critical Sunds Defibrator Ind Ab

1993-08-19 Publication of ZA93317B publication Critical patent/ZA93317B/xx

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
- D21C9/153—Bleaching ; Apparatus therefor with oxygen or its allotropic modifications with ozone
- 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
- D21C9/1057—Multistage, with compounds cited in more than one sub-group D21C9/10, D21C9/12, D21C9/16
- 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
- D21C9/16—Bleaching ; Apparatus therefor with per compounds
- D21C9/163—Bleaching ; Apparatus therefor with per compounds with peroxides

Landscapes

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

ZA93317A 1992-01-21 1993-01-18 Bleaching of chemical pulp ZA93317B (en)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
SE9200152A SE469842C (sv)	1992-01-21	1992-01-21	Blekning av kemisk massa med peroxid

Publications (1)

Publication Number	Publication Date
ZA93317B true ZA93317B (en)	1993-08-19

Family

ID=20385065

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
ZA93317A ZA93317B (en)	1992-01-21	1993-01-18	Bleaching of chemical pulp

Country Status (14)

Country	Link
EP (1)	EP0621915B1 (fr)
JP (1)	JPH07503042A (fr)
AT (1)	ATE151826T1 (fr)
AU (1)	AU653467B2 (fr)
BR (1)	BR9305761A (fr)
CA (1)	CA2124088A1 (fr)
DE (1)	DE69309893T2 (fr)
ES (1)	ES2102008T3 (fr)
FI (1)	FI943431L (fr)
NO (1)	NO942718L (fr)
NZ (1)	NZ246713A (fr)
SE (1)	SE469842C (fr)
WO (1)	WO1993014262A1 (fr)
ZA (1)	ZA93317B (fr)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
BE1004674A3 (fr) *	1991-03-11	1993-01-12	Interox Internat Sa	Procede pour le blanchiment d'une pate a papier chimique et application de ce procede au blanchiment d'une pate kraft.
BE1006056A3 (fr) *	1992-07-06	1994-05-03	Solvay Interox	Procede pour le blanchiment d'une pate a papier chimique.
SE500616C2 (sv) *	1993-06-08	1994-07-25	Kvaerner Pulping Tech	Blekning av kemisk massa med peroxid vid övertryck
SE501253C2 (sv) *	1993-06-08	1994-12-19	Kvaerner Pulping Tech	Klorfri blekning av kemisk pappersmassa
JPH09502229A (ja) *	1993-09-02	1997-03-04	ユニオンキャンプパテントホールディングインコーポレイテッド	リグノセルロースパルプの改良漂白方法
BE1007757A3 (fr) *	1993-11-10	1995-10-17	Solvay Interox	Procede pour le blanchiment d'une pate a papier chimique.
FR2719854B1 (fr) *	1994-05-11	1996-06-21	Atochem Elf Sa	Procédé de préparation de pâtes à papier chimiques délignifiées et blanchies.
SE514697C2 (sv) *	1994-08-31	2001-04-02	Valmet Fibertech Ab	Eliminering av metalljoner vid blekning av massa

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
GB8620222D0 (en) *	1986-08-20	1986-10-01	Abitibi Price Inc	Peroxide bleaching
US4732650A (en) *	1986-09-15	1988-03-22	The Dow Chemical Company	Bleaching of cellulosic pulps using hydrogen peroxide
DE69004492T3 (de) *	1989-06-06	2001-11-15	Eka Nobel Ab, Bohus	Verfahren zum Bleichen von Lignocellulose enthaltenden Zellstoffen.
FI93866B (fi) *	1990-02-09	1995-02-28	Sunds Defibrator Rauma Oy	Menetelmä sulfaattimassan valmistamiseksi

1992
- 1992-01-21 SE SE9200152A patent/SE469842C/sv unknown
1993
- 1993-01-12 DE DE69309893T patent/DE69309893T2/de not_active Expired - Fee Related
- 1993-01-12 ES ES93902618T patent/ES2102008T3/es not_active Expired - Lifetime
- 1993-01-12 AT AT93902618T patent/ATE151826T1/de not_active IP Right Cessation
- 1993-01-12 AU AU34125/93A patent/AU653467B2/en not_active Ceased
- 1993-01-12 CA CA002124088A patent/CA2124088A1/fr not_active Abandoned
- 1993-01-12 JP JP5512379A patent/JPH07503042A/ja active Pending
- 1993-01-12 FI FI943431A patent/FI943431L/fi unknown
- 1993-01-12 NZ NZ246713A patent/NZ246713A/en unknown
- 1993-01-12 BR BR9305761A patent/BR9305761A/pt not_active Application Discontinuation
- 1993-01-12 WO PCT/SE1993/000012 patent/WO1993014262A1/fr not_active Ceased
- 1993-01-12 EP EP93902618A patent/EP0621915B1/fr not_active Expired - Lifetime
- 1993-01-18 ZA ZA93317A patent/ZA93317B/xx unknown
1994
- 1994-07-20 NO NO942718A patent/NO942718L/no unknown

Also Published As

Publication number	Publication date
ATE151826T1 (de)	1997-05-15
EP0621915B1 (fr)	1997-04-16
SE469842C (sv)	1996-01-15
SE9200152D0 (sv)	1992-01-21
BR9305761A (pt)	1997-01-28
JPH07503042A (ja)	1995-03-30
DE69309893D1 (de)	1997-05-22
SE9200152L (sv)	1993-07-22
AU653467B2 (en)	1994-09-29
NZ246713A (en)	1995-04-27
ES2102008T3 (es)	1997-07-16
DE69309893T2 (de)	1997-11-06
CA2124088A1 (fr)	1993-07-22
SE469842B (sv)	1993-09-27
FI943431A7 (fi)	1994-07-20
EP0621915A1 (fr)	1994-11-02
FI943431A0 (fi)	1994-07-20
WO1993014262A1 (fr)	1993-07-22
FI943431L (fi)	1994-07-20
NO942718D0 (no)	1994-07-20
AU3412593A (en)	1993-08-03
NO942718L (no)	1994-07-20

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