BR9304438A - Processo para o alvejamento de polpa contendo ligno-celulose. - Google Patents

Processo para o alvejamento de polpa contendo ligno-celulose.

Info

Publication number
BR9304438A
BR9304438A BR9304438A BR9304438A BR9304438A BR 9304438 A BR9304438 A BR 9304438A BR 9304438 A BR9304438 A BR 9304438A BR 9304438 A BR9304438 A BR 9304438A BR 9304438 A BR9304438 A BR 9304438A
Authority
BR
Brazil
Prior art keywords
pulp
bleaching
cellulose
pulp containing
peroxide
Prior art date
Application number
BR9304438A
Other languages
English (en)
Portuguese (pt)
Inventor
Lillemor Holtinger
Wenche Hermansson
Lennart Andersson
Jiri Basta
Magnus Linsten
Original Assignee
Eka Nobel
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.)
Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=20387625&utm_source=***_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=BR9304438(A) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Eka Nobel filed Critical Eka Nobel
Publication of BR9304438A publication Critical patent/BR9304438A/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
    • D21C9/1005—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
    • D21C9/16—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)
  • Polysaccharides And Polysaccharide Derivatives (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)
  • Agricultural Chemicals And Associated Chemicals (AREA)
  • Stringed Musical Instruments (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Pigments, Carbon Blacks, Or Wood Stains (AREA)
BR9304438A 1992-10-29 1993-10-29 Processo para o alvejamento de polpa contendo ligno-celulose. BR9304438A (pt)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE9203200A SE512137C2 (sv) 1992-10-29 1992-10-29 Förfarande för blekning av lignocellulosahaltig massa

Publications (1)

Publication Number Publication Date
BR9304438A true BR9304438A (pt) 1994-05-03

Family

ID=20387625

Family Applications (1)

Application Number Title Priority Date Filing Date
BR9304438A BR9304438A (pt) 1992-10-29 1993-10-29 Processo para o alvejamento de polpa contendo ligno-celulose.

Country Status (16)

Country Link
EP (1) EP0595386B2 (de)
JP (1) JPH06207392A (de)
AT (1) ATE180523T1 (de)
AU (1) AU659039B2 (de)
BR (1) BR9304438A (de)
CA (1) CA2109179A1 (de)
CZ (1) CZ284366B6 (de)
DE (1) DE69325070D1 (de)
FI (1) FI934705A (de)
MX (1) MX9306618A (de)
NO (1) NO302766B1 (de)
NZ (1) NZ250050A (de)
RU (1) RU2072014C1 (de)
SE (1) SE512137C2 (de)
SK (1) SK117593A3 (de)
ZA (1) ZA937908B (de)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3724033B2 (ja) * 1996-01-30 2005-12-07 住友電気工業株式会社 高強度・高耐熱アルミニウム合金およびその製造方法、導電線ならびに架空用電線
AUPP476398A0 (en) * 1998-07-21 1998-08-13 Orica Australia Pty Ltd Bleaching process
DE102009050570B4 (de) 2008-10-23 2017-07-06 Bene_Fit Systems Gmbh & Co. Kg Herstellungsverfahren für gebleichte organische Fasermaterialien und Verwendung eines Bleichmittels

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US422819A (en) * 1890-03-04 Frederick j
US2687943A (en) * 1951-06-26 1954-08-31 Du Pont Bleaching of mechanical wood pulp
US3507744A (en) * 1966-04-01 1970-04-21 Kimberly Clark Co Wood pulp bleaching process utilizing peroxide pyrophosphate high concentration compositions
JPS51102103A (en) * 1975-03-05 1976-09-09 Nippon Parupu Kogyo Kk Ryusanenhoparupuno hyohakuhoho
JPS583074B2 (ja) * 1975-11-17 1983-01-19 三菱瓦斯化学株式会社 パルプノ カサンカブツヒヨウハクホウ
SE420430B (sv) † 1978-02-17 1981-10-05 Mo Och Domsjoe Ab Forfarande for blekning och extraktion av lignocellulosahaltig material med peroxidhaltiga blekmedel
JPS5927436B2 (ja) * 1979-05-29 1984-07-05 王子製紙株式会社 木材パルプの過酸化物漂白方法
JPS5721590A (en) * 1980-07-11 1982-02-04 Mitsubishi Gas Chemical Co Peroxide bleaching of wood pulp
FR2520397A1 (fr) * 1982-01-28 1983-07-29 Centre Tech Ind Papier Procede pour le traitement de pates papetieres chimiques
AT380496B (de) * 1984-06-27 1986-05-26 Steyrermuehl Papier Verfahren und reaktor zur delignifizierung von zellstoff mit sauerstoff
JP2827235B2 (ja) * 1988-11-22 1998-11-25 三菱瓦斯化学株式会社 高収率パルプの漂白法
JPH0364589A (ja) * 1989-07-28 1991-03-19 Mitsubishi Gas Chem Co Inc 化学パルプの漂白方法
US5091054A (en) † 1989-08-18 1992-02-25 Degussa Corporation Process for bleaching and delignification of lignocellulosic
CA2053035C (en) † 1990-10-12 1997-09-30 Repap Enterprises Inc. Chlorine-free wood pulps and process of making
SE470065C (sv) * 1991-04-30 1996-01-15 Eka Nobel Ab Behandling av kemisk massa med en syra och därefter en magnesium- och kalciumförening vid klorfri blekning

Also Published As

Publication number Publication date
FI934705A0 (fi) 1993-10-25
CA2109179A1 (en) 1994-04-30
NO933873D0 (no) 1993-10-27
SE512137C2 (sv) 2000-01-31
SK117593A3 (en) 1994-05-11
ZA937908B (en) 1994-05-24
MX9306618A (es) 1994-04-29
NO302766B1 (no) 1998-04-20
CZ284366B6 (cs) 1998-11-11
FI934705A (fi) 1994-04-30
ATE180523T1 (de) 1999-06-15
EP0595386A1 (de) 1994-05-04
AU4919993A (en) 1994-05-12
SE9203200D0 (sv) 1992-10-29
JPH06207392A (ja) 1994-07-26
EP0595386B2 (de) 2002-07-17
EP0595386B1 (de) 1999-05-26
NZ250050A (en) 1994-12-22
SE9203200L (sv) 1994-04-30
CZ224193A3 (en) 1994-05-18
RU2072014C1 (ru) 1997-01-20
AU659039B2 (en) 1995-05-04
NO933873L (no) 1994-05-02
DE69325070D1 (de) 1999-07-01

Similar Documents

Publication Publication Date Title
ATE97179T1 (de) Verfahren zum bleichen von lignocellulose enthaltenden zellstoffen.
BR9201553A (pt) Processo para a deslignificacao e alvejamento de polpa contendo ligno-celulose quimicamente digerida
BR9401526A (pt) Processo para o alvejamento de polpa contendo ligno-celulose
BR9304438A (pt) Processo para o alvejamento de polpa contendo ligno-celulose.
BR9307520A (pt) Processo para o alvejamento de polpa contendo lignocelulose
RU93049739A (ru) Способ отбеливания лигноцеллюлозосодержащей пульпы
SE8902058L (sv) Foerfarande vid blekning av lignocellulosa- haltigt material

Legal Events

Date Code Title Description
FB36 Technical and formal requirements: requirement - article 36 of industrial property law
FF Decision: intention to grant
FG9A Patent or certificate of addition granted
B24C Patent annual fee: request for for restoration

Free format text: REFERENTE A 10A,11A,12A,13A,14A,15A,16A E 17A ANUIDADES.

B24H Lapse because of non-payment of annual fees (definitively: art 78 iv lpi)
B24F Patent annual fee: publication cancelled

Free format text: ANULADA A PUBLICACAO CODIGO 24.8 NA RPI NO 2277 DE 26/08/2014 POR TER SIDO INDEVIDA.

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, 16A E 17A ANUIDADES.

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 2607 DE 22-12-2020 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.