MA23365A1 - Procede pour le blanchiment d'une pate a papier chimique - Google Patents

Procede pour le blanchiment d'une pate a papier chimique

Info

Publication number: MA23365A1
Authority: MA; Morocco
Prior art keywords: bleaching; chemical pulp; pulp; processing step; processing
Prior art date: 1993-11-04

Application number

MA23689A

Other languages

English (en)

Inventor

Devenyns Johan

Desprez Francois

A Troughton Nicholas

Original Assignee

Solvay Interox Sa

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.)

1993-11-04

Filing date

1994-11-04

Publication date

1995-07-01

Family has litigation

First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=3887524&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=MA23365(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.

1994-11-04 Application filed by Solvay Interox Sa filed Critical Solvay Interox Sa

1995-07-01 Publication of MA23365A1 publication Critical patent/MA23365A1/fr

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
- D21C9/1057—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
- D21C9/1026—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
- D21C9/16—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)
Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Silver Salt Photography Or Processing Solution Therefor (AREA)

MA23689A 1993-11-04 1994-11-04 Procede pour le blanchiment d'une pate a papier chimique MA23365A1 (fr)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
BE9301215A BE1007700A3 (fr)	1993-11-04	1993-11-04	Procede pour le blanchiment d'une pate a papier chimique.

Publications (1)

Publication Number	Publication Date
MA23365A1 true MA23365A1 (fr)	1995-07-01

Family

ID=3887524

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
MA23689A MA23365A1 (fr)	1993-11-04	1994-11-04	Procede pour le blanchiment d'une pate a papier chimique

Country Status (15)

Country	Link
EP (1)	EP0726979B1 (fr)
JP (1)	JPH09507096A (fr)
AT (1)	ATE166118T1 (fr)
AU (1)	AU7994094A (fr)
BE (1)	BE1007700A3 (fr)
BR (1)	BR9407976A (fr)
CA (1)	CA2175817A1 (fr)
DE (1)	DE69410286T2 (fr)
ES (1)	ES2119234T3 (fr)
FI (1)	FI961895A0 (fr)
MA (1)	MA23365A1 (fr)
NO (1)	NO961817D0 (fr)
NZ (1)	NZ274852A (fr)
WO (1)	WO1995012709A1 (fr)
ZA (1)	ZA948562B (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
BE1007757A3 (fr) *	1993-11-10	1995-10-17	Solvay Interox	Procede pour le blanchiment d'une pate a papier chimique.
FI105701B (fi) *	1995-10-20	2000-09-29	Ahlstrom Machinery Oy	Menetelmä ja laitteisto massan käsittelemiseksi

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
FR2582692B1 (fr) *	1985-05-29	1987-12-11	Atochem	Traitement de pates papetieres chimiques par le peroxyde d'hydrogene en vue de leur blanchiment
DE402335T1 (de) *	1989-06-06	1992-04-09	Eka Nobel Ab, Surte	Verfahren zum bleichen von lignocellulose enthaltenden zellstoffen.
FR2655668B1 (fr) *	1989-12-11	1995-06-09	Du Pin Cellulose	Procede de blanchiment de pates cellulosiques chimiques.

1993
- 1993-11-04 BE BE9301215A patent/BE1007700A3/fr not_active IP Right Cessation
1994
- 1994-10-28 JP JP7513015A patent/JPH09507096A/ja active Pending
- 1994-10-28 WO PCT/EP1994/003591 patent/WO1995012709A1/fr not_active Ceased
- 1994-10-28 DE DE69410286T patent/DE69410286T2/de not_active Revoked
- 1994-10-28 AT AT94931026T patent/ATE166118T1/de not_active IP Right Cessation
- 1994-10-28 ES ES94931026T patent/ES2119234T3/es not_active Expired - Lifetime
- 1994-10-28 BR BR9407976A patent/BR9407976A/pt not_active Application Discontinuation
- 1994-10-28 CA CA002175817A patent/CA2175817A1/fr not_active Abandoned
- 1994-10-28 EP EP94931026A patent/EP0726979B1/fr not_active Revoked
- 1994-10-28 NZ NZ274852A patent/NZ274852A/en unknown
- 1994-10-28 AU AU79940/94A patent/AU7994094A/en not_active Abandoned
- 1994-10-28 FI FI961895A patent/FI961895A0/fi unknown
- 1994-10-31 ZA ZA948562A patent/ZA948562B/xx unknown
- 1994-11-04 MA MA23689A patent/MA23365A1/fr unknown
1996
- 1996-05-03 NO NO961817A patent/NO961817D0/no unknown

Also Published As

Publication number	Publication date
NO961817L (no)	1996-05-03
ES2119234T3 (es)	1998-10-01
AU7994094A (en)	1995-05-23
BR9407976A (pt)	1996-12-03
EP0726979B1 (fr)	1998-05-13
NO961817D0 (no)	1996-05-03
JPH09507096A (ja)	1997-07-15
CA2175817A1 (fr)	1995-05-11
DE69410286D1 (de)	1998-06-18
ATE166118T1 (de)	1998-05-15
DE69410286T2 (de)	1998-12-10
FI961895A7 (fi)	1996-05-03
BE1007700A3 (fr)	1995-10-03
ZA948562B (en)	1995-06-30
FI961895L (fi)	1996-05-03
NZ274852A (en)	1997-04-24
FI961895A0 (fi)	1996-05-03
WO1995012709A1 (fr)	1995-05-11
EP0726979A1 (fr)	1996-08-21

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