BR9407976A - Processo para o branqueamento de uma pasta de papel química - Google Patents

Processo para o branqueamento de uma pasta de papel química

Info

Publication number: BR9407976A
Authority: BR; Brazil
Prior art keywords: bleaching; chemical pulp; pulp; processing step; processing
Prior art date: 1993-11-04

Application number

BR9407976A

Other languages

English (en)

Inventor

Francois Desprez

Nicholas A Troughton

Johan Devenyns

Original Assignee

Solvay Interox

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

1994-10-28

Publication date

1996-12-03

Family has litigation

First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=3887524&utm_source=***_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=BR9407976(A) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.

1994-10-28 Application filed by Solvay Interox filed Critical Solvay Interox

1996-12-03 Publication of BR9407976A publication Critical patent/BR9407976A/pt

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
- D21C9/1057—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)

BR9407976A 1993-11-04 1994-10-28 Processo para o branqueamento de uma pasta de papel química BR9407976A (pt)

Applications Claiming Priority (2)

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.
PCT/EP1994/003591 WO1995012709A1 (fr)	1993-11-04	1994-10-28	Procede pour le blanchiment d'une pate a papier chimique

Publications (1)

Publication Number	Publication Date
BR9407976A true BR9407976A (pt)	1996-12-03

Family

ID=3887524

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
BR9407976A BR9407976A (pt)	1993-11-04	1994-10-28	Processo para o branqueamento de uma pasta de papel química

Country Status (15)

Country	Link
EP (1)	EP0726979B1 (pt)
JP (1)	JPH09507096A (pt)
AT (1)	ATE166118T1 (pt)
AU (1)	AU7994094A (pt)
BE (1)	BE1007700A3 (pt)
BR (1)	BR9407976A (pt)
CA (1)	CA2175817A1 (pt)
DE (1)	DE69410286T2 (pt)
ES (1)	ES2119234T3 (pt)
FI (1)	FI961895A (pt)
MA (1)	MA23365A1 (pt)
NO (1)	NO961817L (pt)
NZ (1)	NZ274852A (pt)
WO (1)	WO1995012709A1 (pt)
ZA (1)	ZA948562B (pt)

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
EP0402335B2 (en) *	1989-06-06	2001-03-14	Eka Chemicals AB	Process for bleaching lignocellulose-containing pulps
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 AT AT94931026T patent/ATE166118T1/de not_active IP Right Cessation
- 1994-10-28 AU AU79940/94A patent/AU7994094A/en not_active Abandoned
- 1994-10-28 NZ NZ274852A patent/NZ274852A/en unknown
- 1994-10-28 JP JP7513015A patent/JPH09507096A/ja active Pending
- 1994-10-28 WO PCT/EP1994/003591 patent/WO1995012709A1/fr not_active Application Discontinuation
- 1994-10-28 ES ES94931026T patent/ES2119234T3/es not_active Expired - Lifetime
- 1994-10-28 DE DE69410286T patent/DE69410286T2/de not_active Revoked
- 1994-10-28 CA CA002175817A patent/CA2175817A1/fr not_active Abandoned
- 1994-10-28 BR BR9407976A patent/BR9407976A/pt not_active Application Discontinuation
- 1994-10-28 EP EP94931026A patent/EP0726979B1/fr not_active Revoked
- 1994-10-31 ZA ZA948562A patent/ZA948562B/xx unknown
- 1994-11-04 MA MA23689A patent/MA23365A1/fr unknown
1996
- 1996-05-03 FI FI961895A patent/FI961895A/fi unknown
- 1996-05-03 NO NO961817A patent/NO961817L/no unknown

Also Published As

Publication number	Publication date
CA2175817A1 (fr)	1995-05-11
EP0726979A1 (fr)	1996-08-21
NO961817D0 (no)	1996-05-03
DE69410286D1 (de)	1998-06-18
ATE166118T1 (de)	1998-05-15
NO961817L (no)	1996-05-03
ZA948562B (en)	1995-06-30
JPH09507096A (ja)	1997-07-15
MA23365A1 (fr)	1995-07-01
AU7994094A (en)	1995-05-23
EP0726979B1 (fr)	1998-05-13
BE1007700A3 (fr)	1995-10-03
FI961895A0 (fi)	1996-05-03
FI961895A (fi)	1996-05-03
ES2119234T3 (es)	1998-10-01
WO1995012709A1 (fr)	1995-05-11
DE69410286T2 (de)	1998-12-10
NZ274852A (en)	1997-04-24

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Legal Events

Date	Code	Title	Description
1999-07-13	FB36	Technical and formal requirements: requirement - article 36 of industrial property law
2000-08-29	FA8	Dismissal: dismissal - article 36, par. 1 of industrial property law