FI874019A0 - Foerbaettrat foerfarande foer blekning av cellulosamassa medelst vaeteperoxid. - Google Patents

Foerbaettrat foerfarande foer blekning av cellulosamassa medelst vaeteperoxid.

Info

Publication number
FI874019A0
FI874019A0 FI874019A FI874019A FI874019A0 FI 874019 A0 FI874019 A0 FI 874019A0 FI 874019 A FI874019 A FI 874019A FI 874019 A FI874019 A FI 874019A FI 874019 A0 FI874019 A0 FI 874019A0
Authority
FI
Finland
Prior art keywords
vaeteperoxid
cellulosamassa
medelst
foerfarande foer
foerbaettrat
Prior art date
Application number
FI874019A
Other languages
English (en)
Other versions
FI88526B (fi
FI88526C (fi
FI874019A (fi
Inventor
Robert J Michalowski
Jimmy Myers
Steven H Christiansen
David A Wilson
Original Assignee
Dow Chemical Co
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 Dow Chemical Co filed Critical Dow Chemical Co
Publication of FI874019A0 publication Critical patent/FI874019A0/fi
Publication of FI874019A publication Critical patent/FI874019A/fi
Publication of FI88526B publication Critical patent/FI88526B/fi
Application granted granted Critical
Publication of FI88526C publication Critical patent/FI88526C/fi

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

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Paper (AREA)
  • Polysaccharides And Polysaccharide Derivatives (AREA)
FI874019A 1986-09-15 1987-09-15 Foerbaettrat foerfarande foer blekning av cellulosamassa medelst vaeteperoxid FI88526C (fi)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US06/907,694 US4732650A (en) 1986-09-15 1986-09-15 Bleaching of cellulosic pulps using hydrogen peroxide
US90769486 1986-09-15

Publications (4)

Publication Number Publication Date
FI874019A0 true FI874019A0 (fi) 1987-09-15
FI874019A FI874019A (fi) 1988-03-16
FI88526B FI88526B (fi) 1993-02-15
FI88526C FI88526C (fi) 1993-05-25

Family

ID=25424494

Family Applications (1)

Application Number Title Priority Date Filing Date
FI874019A FI88526C (fi) 1986-09-15 1987-09-15 Foerbaettrat foerfarande foer blekning av cellulosamassa medelst vaeteperoxid

Country Status (12)

Country Link
US (1) US4732650A (fi)
EP (1) EP0262836B1 (fi)
JP (1) JPH0814079B2 (fi)
AU (1) AU600756B2 (fi)
BR (1) BR8704771A (fi)
CA (1) CA1284558C (fi)
DE (1) DE3775688D1 (fi)
DK (1) DK168543B1 (fi)
FI (1) FI88526C (fi)
NO (1) NO170347C (fi)
NZ (1) NZ221798A (fi)
ZA (1) ZA876920B (fi)

Families Citing this family (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE459924B (sv) * 1988-01-22 1989-08-21 Sunds Defibrator Saett foer framstaellning av mekanisk massa
EP0402335B2 (en) * 1989-06-06 2001-03-14 Eka Chemicals AB Process for bleaching lignocellulose-containing pulps
US5145558A (en) * 1989-11-15 1992-09-08 The Dow Chemical Company Composition for alkaline peroxide bleaching of wood pulp using a quaternary amine as additive
US5013404A (en) * 1989-11-15 1991-05-07 The Dow Chemical Company Process for alkaline peroxide bleaching of wood pulp using a quaternary amine as additive
SE9001481L (sv) * 1990-04-23 1991-10-24 Eka Nobel Ab Reduktion av halogenorganiska foereningar i blekeriavlopp
SE466061B (sv) * 1990-04-23 1991-12-09 Eka Nobel Ab Blekning av kemisk massa genom behandling med foerst ett komplexbildande aemne och sedan ett peroxidinnehaallande aemne
FR2661431B1 (fr) * 1990-04-30 1992-07-17 Atochem Procede de blanchiment au peroxyde de l'hydrogene de pates a papier a haut rendement.
US6398908B1 (en) 1991-04-30 2002-06-04 Eka Nobel Ab Process for acid bleaching of lignocellulose-containing pulp with a magnesium compound
US5223091A (en) * 1991-11-25 1993-06-29 Macmillan Bloedel Limited Method of brightening mechanical pulp using silicate-free peroxide bleaching
US5205907A (en) * 1991-11-25 1993-04-27 Macmillan Bloedel Limited Removal of manganese from pulp using a chelating agent and magnesium sulphate
SE469842C (sv) * 1992-01-21 1996-01-15 Sunds Defibrator Ind Ab Blekning av kemisk massa med peroxid
CA2063351C (en) * 1992-03-18 1996-08-13 Stanley Alan Heimburger Process for bleaching hardwood pulp
JP2937658B2 (ja) * 1992-10-02 1999-08-23 日華化学 株式会社 故紙の再生処理方法
WO1994020672A1 (en) * 1993-03-12 1994-09-15 University Of Georgia Research Foundation, Inc. Process for bleaching pulp
US6149766A (en) * 1993-06-08 2000-11-21 Kvaerner Pulping Technologies, A/B Process for peroxide bleaching of chemical pulp in a pressurized bleaching vessel
ATE165636T1 (de) * 1993-10-26 1998-05-15 Akzo Nobel Nv Aminoalkan-diphosphonsäuren zum bleichen von zellstoff
US5645688A (en) * 1995-01-30 1997-07-08 Vinings Industries, Inc. Bleaching compositions and processes employing sulfamates and polyaminocarboxylic acids
CA2173824A1 (en) * 1995-04-27 1996-10-28 Brian A. Parker Ethylenediaminetriacetic acid and salts thereof as chelating agents in pulp bleaching
US6706143B1 (en) 1996-03-19 2004-03-16 International Paper Company Minimizing chlorinated organics in pulp bleaching processes
JPH108092A (ja) * 1996-06-21 1998-01-13 Mitsubishi Paper Mills Ltd 過酸化物漂白用安定化剤及びそれを用いた繊維系物質の漂白方法
KR100482289B1 (ko) * 2002-09-10 2005-04-14 한국케미라케미칼(주) 과산화물 표백에 사용되는 안정제 조성물 및 과산화물 표백제의 안정화 방법
US7101832B2 (en) * 2003-06-19 2006-09-05 Johnsondiversey, Inc. Cleaners containing peroxide bleaching agents for cleaning paper making equipment and method
US7351764B2 (en) * 2004-03-31 2008-04-01 Nalco Company Methods to enhance brightness of pulp and optimize use of bleaching chemicals
US7297225B2 (en) * 2004-06-22 2007-11-20 Georgia-Pacific Consumer Products Lp Process for high temperature peroxide bleaching of pulp with cool discharge
US8138106B2 (en) 2005-09-30 2012-03-20 Rayonier Trs Holdings Inc. Cellulosic fibers with odor control characteristics
US20080110584A1 (en) * 2006-11-15 2008-05-15 Caifang Yin Bleaching process with at least one extraction stage

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE795085A (fr) * 1972-03-10 1973-05-29 Benckiser Knapsack Gmbh Procede de blanchiment de fibres cellulosiques seules ou en melange avec des fibres synthetiques
SE416481B (sv) * 1977-05-02 1981-01-05 Mo Och Domsjoe Ab Fofarande och anordning for behandling av vedflis for avlegsnande av tungmetaller och harts
US4614646A (en) * 1984-12-24 1986-09-30 The Dow Chemical Company Stabilization of peroxide systems in the presence of alkaline earth metal ions

Also Published As

Publication number Publication date
US4732650A (en) 1988-03-22
NZ221798A (en) 1990-07-26
EP0262836A1 (en) 1988-04-06
AU600756B2 (en) 1990-08-23
NO170347C (no) 1992-10-07
ZA876920B (en) 1989-05-30
FI88526B (fi) 1993-02-15
NO873833L (no) 1988-03-16
EP0262836B1 (en) 1992-01-02
CA1284558C (en) 1991-06-04
JPS63120187A (ja) 1988-05-24
DK479287D0 (da) 1987-09-14
NO170347B (no) 1992-06-29
DK479287A (da) 1988-03-16
AU7840787A (en) 1988-03-17
BR8704771A (pt) 1988-05-17
DE3775688D1 (de) 1992-02-13
NO873833D0 (no) 1987-09-14
DK168543B1 (da) 1994-04-18
FI88526C (fi) 1993-05-25
JPH0814079B2 (ja) 1996-02-14
FI874019A (fi) 1988-03-16

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Legal Events

Date Code Title Description
BB Publication of examined application
MM Patent lapsed

Owner name: THE DOW CHEMICAL COMPANY