IT1249694B - Procedimento per la sbianca di pasta di legno senza impiego di cloro elementare. (caso 156-7131) - Google Patents

Procedimento per la sbianca di pasta di legno senza impiego di cloro elementare. (caso 156-7131)

Info

Publication number
IT1249694B
IT1249694B ITRM910670A ITRM910670A IT1249694B IT 1249694 B IT1249694 B IT 1249694B IT RM910670 A ITRM910670 A IT RM910670A IT RM910670 A ITRM910670 A IT RM910670A IT 1249694 B IT1249694 B IT 1249694B
Authority
IT
Italy
Prior art keywords
whitening
procedure
case
wood pulp
chlorine
Prior art date
Application number
ITRM910670A
Other languages
English (en)
Inventor
Roberta L Farrell
Paul Steven Skerker
Hou-Min Chang
Original Assignee
Sandoz Ag
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
Application filed by Sandoz Ag filed Critical Sandoz Ag
Publication of ITRM910670A0 publication Critical patent/ITRM910670A0/it
Publication of ITRM910670A1 publication Critical patent/ITRM910670A1/it
Application granted granted Critical
Publication of IT1249694B publication Critical patent/IT1249694B/it

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
    • D21C5/00—Other processes for obtaining cellulose, e.g. cooking cotton linters ; Processes characterised by the choice of cellulose-containing starting materials
    • D21C5/005—Treatment of cellulose-containing material with microorganisms or enzymes
    • 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
    • D21C9/12—Bleaching ; Apparatus therefor with halogens or halogen-containing compounds
    • D21C9/14—Bleaching ; Apparatus therefor with halogens or halogen-containing compounds with ClO2 or chlorites

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Biochemistry (AREA)
  • Microbiology (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Paper (AREA)
  • Preparation Of Compounds By Using Micro-Organisms (AREA)

Abstract

Oggetto dell'invenzione è un procedimento senza cloro per sbiancare paste di legno chimiche, particolarmente pasta di legno kraft, in cui viene eseguita una prima operazione di trattamento della pasta di legno con un enzima di microorganismo che agisce sulla emicellulosa. Successivamente, la pasta di legno trattata viene estratta, trattata con biossido di cloro, riestratta e ritrattata con biossido di cloro per avere come risultato un livello di brillantezza di almeno 88.
ITRM910670A 1990-09-11 1991-09-10 Procedimento per la sbianca di pasta di legno senza impiego di cloro elementare. (caso 156-7131) IT1249694B (it)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US58074390A 1990-09-11 1990-09-11

Publications (3)

Publication Number Publication Date
ITRM910670A0 ITRM910670A0 (it) 1991-09-10
ITRM910670A1 ITRM910670A1 (it) 1993-03-10
IT1249694B true IT1249694B (it) 1995-03-09

Family

ID=24322372

Family Applications (1)

Application Number Title Priority Date Filing Date
ITRM910670A IT1249694B (it) 1990-09-11 1991-09-10 Procedimento per la sbianca di pasta di legno senza impiego di cloro elementare. (caso 156-7131)

Country Status (7)

Country Link
JP (1) JPH04245988A (it)
CA (1) CA2050986A1 (it)
DE (1) DE4129739A1 (it)
FR (1) FR2666597B1 (it)
GB (1) GB2248075B (it)
IT (1) IT1249694B (it)
SE (1) SE9102589L (it)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06116889A (ja) * 1992-09-30 1994-04-26 New Oji Paper Co Ltd 木材化学パルプの漂白法
JP3262646B2 (ja) * 1993-07-09 2002-03-04 日本製紙株式会社 パルプの漂白方法
JPH0734396A (ja) * 1993-07-15 1995-02-03 Nippon Paper Ind Co Ltd 積層板用原紙
JP3244887B2 (ja) * 1993-10-21 2002-01-07 三菱製紙株式会社 食品容器用の紙
FI935187L (fi) * 1993-11-22 1995-05-23 Valtion Teknillinen Menetelmä valkaistun selluloosamassan valmistamiseksi
JP3610686B2 (ja) * 1996-07-31 2005-01-19 王子製紙株式会社 印刷用塗被紙の製造方法
EP1325961A1 (en) * 1997-06-10 2003-07-09 Danisco Sweeteners Oy A process for the production of crystalline xylose
CA2432788C (en) 2000-12-22 2008-10-07 Iogen Bio-Products Corporation Alkaline extraction stages comprising xylanase
US7320741B2 (en) 2001-01-18 2008-01-22 Iogen Bio-Products Corporation Method of xylanase treatment in a chlorine dioxide bleaching sequence
CN1293261C (zh) * 2001-12-03 2007-01-03 埃欧金生物制品公司 利用木聚糖酶和过氧化氢、过酸或其组合物的漂白段
WO2003074780A1 (en) * 2002-03-06 2003-09-12 Iogen Bio-Products Corporation Xylanase treatment of chemical pulp
WO2009138090A2 (en) * 2008-05-14 2009-11-19 Rådet For Agroindustri A process for the production of hydrolysed plant material
WO2012084842A1 (en) 2010-12-22 2012-06-28 Akzo Nobel Chemicals International B.V. Process for improving chlorine dioxide bleaching of pulp
CN102182094B (zh) * 2011-04-12 2012-03-14 山东轻工业学院 一种沙柳硫酸盐浆漂白工艺

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ATE20680T1 (de) * 1982-04-30 1986-07-15 Ici Plc Delignifizierung von lignocellulosematerial.
FI81395B (fi) * 1988-03-14 1990-06-29 Cultor Oy Foerfarande foer blekning av cellulosamassa.
DE68914112T2 (de) * 1988-11-23 1994-08-04 Sandoz Ag Benutzung von Enzymen von Aureobasidium Pullulans für das Bleichen von Zellstoff.
US5179021A (en) * 1989-02-10 1993-01-12 Gil Inc. (Now Ici Canada Inc.) Pulp bleaching process comprising oxygen delignification and xylanase enzyme treatment
FI90888B (fi) * 1989-02-14 1993-12-31 Enso Gutzeit Oy Menetelmä selluloosamassan valkaisemiseksi
FI86896B (fi) * 1989-05-04 1992-07-15 Enso Gutzeit Oy Foerfarande foer blekning av cellulosamassa.
DK420289D0 (da) * 1989-08-25 1989-08-25 Novo Nordisk As Fremgangsmaade til behandling af lignocellulosepulp
NZ235679A (en) * 1989-10-18 1993-01-27 Int Paper Co Bleaching lignocellulosic pulp using (a) treatment with xylanase and (b) one or more chemical bleaching stages

Also Published As

Publication number Publication date
GB2248075B (en) 1994-06-29
SE9102589D0 (sv) 1991-09-09
ITRM910670A0 (it) 1991-09-10
CA2050986A1 (en) 1992-03-12
FR2666597B1 (fr) 1996-10-31
GB2248075A (en) 1992-03-25
GB9119218D0 (en) 1991-10-23
JPH04245988A (ja) 1992-09-02
FR2666597A1 (fr) 1992-03-13
ITRM910670A1 (it) 1993-03-10
DE4129739A1 (de) 1992-03-12
SE9102589L (sv) 1992-03-12

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Legal Events

Date Code Title Description
0001 Granted
TA Fee payment date (situation as of event date), data collected since 19931001

Effective date: 19950929