BR9406193A - Processo para alvejar pasta de material de fibra celulósica sem o uso de cloro - Google Patents

Processo para alvejar pasta de material de fibra celulósica sem o uso de cloro

Info

Publication number: BR9406193A
Authority: BR; Brazil
Prior art keywords: chlorine; fiber material; cellulosic fiber; bleaching pulp; bleaching
Prior art date: 1993-01-29

Application number

BR9406193A

Other languages

English (en)

Portuguese (pt)

Inventor

Erik Nilsson

Petter Tibbling

Original Assignee

Kvaerner Pulping Tech

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.)

1993-01-29

Filing date

1994-01-26

Publication date

1996-01-09

1994-01-26 Application filed by Kvaerner Pulping Tech filed Critical Kvaerner Pulping Tech

1996-01-09 Publication of BR9406193A publication Critical patent/BR9406193A/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
- D21C9/16—Bleaching ; Apparatus therefor with per compounds
- D21C9/166—Bleaching ; Apparatus therefor with per compounds with peracids
- 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
- D21C9/1042—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)

BR9406193A 1993-01-29 1994-01-26 Processo para alvejar pasta de material de fibra celulósica sem o uso de cloro BR9406193A (pt)

Applications Claiming Priority (2)

Application Number	Priority Date	Filing Date	Title
SE9300277A SE501325E (sv)	1993-01-29	1993-01-29	Förfarande för klorfri blekning av massa, varvid massan surgöres med ättiksyra vid behandlingen med komplexbildare
PCT/SE1994/000054 WO1994017239A1 (en)	1993-01-29	1994-01-26	Method for chlorine-free bleaching of pulp with acetic acid as acidifying agent

Publications (1)

Publication Number	Publication Date
BR9406193A true BR9406193A (pt)	1996-01-09

Family

ID=20388704

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
BR9406193A BR9406193A (pt)	1993-01-29	1994-01-26	Processo para alvejar pasta de material de fibra celulósica sem o uso de cloro

Country Status (10)

Country	Link
EP (1)	EP0681624A1 (no)
JP (1)	JPH08505907A (no)
CN (1)	CN1117301A (no)
AU (1)	AU675291B2 (no)
BR (1)	BR9406193A (no)
CA (1)	CA2154076A1 (no)
FI (1)	FI111387B (no)
NO (1)	NO305763B1 (no)
SE (1)	SE501325E (no)
WO (1)	WO1994017239A1 (no)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
CN1050642C (zh) *	1996-06-25	2000-03-22	华南理工大学	高浓纸浆过氧化氢漂白方法
CN103726382B (zh) *	2013-12-31	2016-08-17	安徽泾县千年古宣宣纸有限公司	一种纯草型宣纸及其无氯漂白生产工艺
EP3882380B1 (en) *	2020-03-16	2022-04-27	Re:NewCell AB	One stage method for acid metal removal and bleach

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE2219505C3 (de) *	1972-04-21	1974-10-17	Deutsche Gold- Und Silber-Scheideanstalt Vormals Roessler, 6000 Frankfurt	Chlorfreie Mehrstufenbleiche von Zellstoff
DE2841013C2 (de) *	1978-09-21	1984-06-07	Degussa Ag, 6000 Frankfurt	Verfahren zur Vollbleiche von Zellstoff
ES2038097T5 (es) *	1989-06-06	2001-05-01	Eka Chemicals Ab	Procedimiento para blanquear pastas papeleras que contienen lignocelulosa.
SE468355B (sv) *	1991-04-30	1992-12-21	Eka Nobel Ab	Blekning av kemisk massa genom behandling med komplexbildare och ozon

1993
- 1993-01-29 SE SE9300277A patent/SE501325E/xx not_active IP Right Cessation
1994
- 1994-01-26 EP EP94905899A patent/EP0681624A1/en not_active Ceased
- 1994-01-26 JP JP6516930A patent/JPH08505907A/ja active Pending
- 1994-01-26 WO PCT/SE1994/000054 patent/WO1994017239A1/en active IP Right Grant
- 1994-01-26 BR BR9406193A patent/BR9406193A/pt not_active IP Right Cessation
- 1994-01-26 AU AU59820/94A patent/AU675291B2/en not_active Expired - Fee Related
- 1994-01-26 CN CN 94191058 patent/CN1117301A/zh active Pending
- 1994-01-26 CA CA 2154076 patent/CA2154076A1/en not_active Abandoned
1995
- 1995-07-24 NO NO952935A patent/NO305763B1/no not_active IP Right Cessation
- 1995-07-27 FI FI953589A patent/FI111387B/fi active

Also Published As

Publication number	Publication date
SE501325E (sv)	1999-09-20
SE501325C2 (sv)	1995-01-16
CA2154076A1 (en)	1994-08-04
NO952935L (no)	1995-09-13
NO952935D0 (no)	1995-07-24
AU675291B2 (en)	1997-01-30
FI953589A (fi)	1995-07-27
FI953589A0 (fi)	1995-07-27
AU5982094A (en)	1994-08-15
NO305763B1 (no)	1999-07-19
EP0681624A1 (en)	1995-11-15
JPH08505907A (ja)	1996-06-25
SE9300277D0 (sv)	1993-01-29
CN1117301A (zh)	1996-02-21
WO1994017239A1 (en)	1994-08-04
FI111387B (fi)	2003-07-15
SE9300277L (sv)	1994-07-30

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Legal Events

Date	Code	Title	Description
2000-11-07	FB36	Technical and formal requirements: requirement - article 36 of industrial property law
2001-02-28	FF	Decision: intention to grant
2001-06-12	FG9A	Patent or certificate of addition granted
2010-09-08	B24C	Patent annual fee: request for for restoration	Free format text: REFERENTE A 10A , 11A , 12A 13A , 14A , 15A E 16A ANUIDADES.
2013-12-10	B24H	Lapse because of non-payment of annual fees (definitively: art 78 iv lpi)	Free format text: EXTINCAO DEFINITIVA - ART. 78 INCISO IV DA LPI
2020-11-24	B24F	Patent annual fee: publication cancelled	Free format text: ANULADA A PUBLICACAO CODIGO 24.8 NA RPI NO 2240 DE 10/12/2013 POR TER SIDO INDEVIDA.
2020-12-08	B21F	Lapse acc. art. 78, item iv - on non-payment of the annual fees in time	Free format text: REFERENTE AS 10A, 11A, 12A, 13A, 14A, 15A E 16A ANUIDADES.
2021-03-23	B24J	Lapse because of non-payment of annual fees (definitively: art 78 iv lpi, resolution 113/2013 art. 12)	Free format text: EM VIRTUDE DA EXTINCAO PUBLICADA NA RPI 2605 DE 08-12-2020 E CONSIDERANDO AUSENCIA DE MANIFESTACAO DENTRO DOS PRAZOS LEGAIS, INFORMO QUE CABE SER MANTIDA A EXTINCAO DA PATENTE E SEUS CERTIFICADOS, CONFORME O DISPOSTO NO ARTIGO 12, DA RESOLUCAO 113/2013.