BR9102464A - Aperfeicoamento em processo de deslignificacao com oxigenio de polpa lignocelulosica - Google Patents

Aperfeicoamento em processo de deslignificacao com oxigenio de polpa lignocelulosica

Info

Publication number: BR9102464A
Authority: BR; Brazil
Prior art keywords: designification; improvement; lignocellulosic pulp; pulp oxygen; oxygen
Prior art date: 1991-06-14

Application number

BR9102464A

Other languages

English (en)

Inventor

Jorge Luiz Colodette

Ana Sabina Santos De Campos

Original Assignee

White Martins 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.)

1991-06-14

Filing date

1991-06-14

Publication date

1993-01-12

1991-06-14 Application filed by White Martins Sa filed Critical White Martins Sa

1991-06-14 Priority to BR9102464A priority Critical patent/BR9102464A/pt

1992-06-12 Priority to MX9202832A priority patent/MX9202832A/es

1992-06-12 Priority to EP19920500075 priority patent/EP0524127B1/en

1993-01-12 Publication of BR9102464A publication Critical patent/BR9102464A/pt

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
- D21C9/1005—Pretreatment of the pulp, e.g. degassing the pulp
- 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
- 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

Landscapes

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

BR9102464A 1991-06-14 1991-06-14 Aperfeicoamento em processo de deslignificacao com oxigenio de polpa lignocelulosica BR9102464A (pt)

Priority Applications (3)

Application Number	Priority Date	Filing Date	Title
BR9102464A BR9102464A (pt)	1991-06-14	1991-06-14	Aperfeicoamento em processo de deslignificacao com oxigenio de polpa lignocelulosica
MX9202832A MX9202832A (es)	1991-06-14	1992-06-12	Mejoria de un proceso para deslignificar pulpa lignocelulosica por medio de oxigeno.
EP19920500075 EP0524127B1 (en)	1991-06-14	1992-06-12	Improvements in a process for delignifying lignocellulosic pulp by means of oxygen

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
BR9102464A BR9102464A (pt)	1991-06-14	1991-06-14	Aperfeicoamento em processo de deslignificacao com oxigenio de polpa lignocelulosica

Publications (1)

Publication Number	Publication Date
BR9102464A true BR9102464A (pt)	1993-01-12

Family

ID=4052110

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
BR9102464A BR9102464A (pt)	1991-06-14	1991-06-14	Aperfeicoamento em processo de deslignificacao com oxigenio de polpa lignocelulosica

Country Status (3)

Country	Link
EP (1)	EP0524127B1 (pt)
BR (1)	BR9102464A (pt)
MX (1)	MX9202832A (pt)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
WO1995030047A1 (en) *	1994-04-28	1995-11-09	Macmillan Bloedel Limited	Oxygen bleaching of cellulosic pulps
AR091998A1 (es)	2012-05-03	2015-03-18	Annikki Gmbh	Procedimiento de preparacion de celulosa con baja concentracion de lignina
CN114908598B (zh) *	2022-02-26	2022-12-09	北京林业大学	一种纸浆氧漂方法

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
SE364323C (sv) *	1972-06-22	1976-04-12	Billeruds Ab	Sett att behandla cellulosamassa i alkalisk miljo

1991
- 1991-06-14 BR BR9102464A patent/BR9102464A/pt not_active IP Right Cessation
1992
- 1992-06-12 EP EP19920500075 patent/EP0524127B1/en not_active Expired - Lifetime
- 1992-06-12 MX MX9202832A patent/MX9202832A/es unknown

Also Published As

Publication number	Publication date
EP0524127B1 (en)	1996-08-14
EP0524127A3 (en)	1993-02-03
EP0524127A2 (en)	1993-01-20
MX9202832A (es)	1993-02-01

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Legal Events

Date	Code	Title	Description
1998-10-27	FB36	Technical and formal requirements: requirement - article 36 of industrial property law
1999-04-27	FF	Decision: granting
1999-07-27	FG9A	Patent or certificate of addition granted
2013-06-04	B21A	Expiry acc. art. 78, item i of ipl- expiry of the term of protection	Free format text: PATENTE EXTINTA EM 14/06/2011