ATE68023T1 - Verfahren zum bleichen von material mit dithionitloesung. - Google Patents

Verfahren zum bleichen von material mit dithionitloesung.

Info

Publication number
ATE68023T1
ATE68023T1 AT88906162T AT88906162T ATE68023T1 AT E68023 T1 ATE68023 T1 AT E68023T1 AT 88906162 T AT88906162 T AT 88906162T AT 88906162 T AT88906162 T AT 88906162T AT E68023 T1 ATE68023 T1 AT E68023T1
Authority
AT
Austria
Prior art keywords
pct
solution
bleaching
dithionite
borohydride
Prior art date
Application number
AT88906162T
Other languages
English (en)
Inventor
Inge Mansson
Original Assignee
Eka Nobel Ab
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 Eka Nobel Ab filed Critical Eka Nobel Ab
Application granted granted Critical
Publication of ATE68023T1 publication Critical patent/ATE68023T1/de

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B17/00—Sulfur; Compounds thereof
    • C01B17/64—Thiosulfates; Dithionites; Polythionates
    • C01B17/66—Dithionites or hydrosulfites (S2O42-)
    • 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
    • D21C9/1084—Bleaching ; Apparatus therefor with reducing compounds
    • D21C9/1089—Bleaching ; Apparatus therefor with reducing compounds with dithionites

Landscapes

  • Organic Chemistry (AREA)
  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Paper (AREA)
  • Silver Salt Photography Or Processing Solution Therefor (AREA)
  • Detergent Compositions (AREA)
  • Dental Preparations (AREA)
  • Inks, Pencil-Leads, Or Crayons (AREA)
  • Solid-Sorbent Or Filter-Aiding Compositions (AREA)
  • Coloring Foods And Improving Nutritive Qualities (AREA)
AT88906162T 1987-06-24 1988-06-14 Verfahren zum bleichen von material mit dithionitloesung. ATE68023T1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
SE8702616A SE457647B (sv) 1987-06-24 1987-06-24 Saett vid blekning av material med ditionitloesning
EP88906162A EP0319563B1 (de) 1987-06-24 1988-06-14 Verfahren zum bleichen von material mit dithionitlösung
PCT/SE1988/000320 WO1988010334A1 (en) 1987-06-24 1988-06-14 Process for bleaching of materials with a dithionite solution

Publications (1)

Publication Number Publication Date
ATE68023T1 true ATE68023T1 (de) 1991-10-15

Family

ID=20368961

Family Applications (1)

Application Number Title Priority Date Filing Date
AT88906162T ATE68023T1 (de) 1987-06-24 1988-06-14 Verfahren zum bleichen von material mit dithionitloesung.

Country Status (9)

Country Link
US (1) US4919755A (de)
EP (1) EP0319563B1 (de)
AT (1) ATE68023T1 (de)
CA (1) CA1295440C (de)
DE (1) DE3865298D1 (de)
FI (1) FI92416C (de)
NO (1) NO170346C (de)
SE (1) SE457647B (de)
WO (1) WO1988010334A1 (de)

Families Citing this family (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5336479A (en) * 1989-01-05 1994-08-09 Morton International, Inc. High yield sodium hydrosulfite generation
US5094833A (en) * 1989-01-05 1992-03-10 Morton International, Inc. High yield sodium hydrosulfite generation
CA1340248C (en) * 1989-01-05 1998-12-15 Morton International, Inc. High yield sodium hydrosulfite generation
AU657778B2 (en) * 1991-10-11 1995-03-23 Engelhard Corporation In situ method for producing hydrosulfite bleach and use thereof
GB9214041D0 (en) * 1992-07-02 1992-08-12 Morton Int Inc Process for de-inking recycled paper pulp
US6217621B1 (en) * 1999-07-09 2001-04-17 Morton International Inc. Textile substrate dye stripping
AU6413200A (en) * 1999-11-04 2001-05-10 Rohm And Haas Company Method and composition for whitening textiles
EP1146089A1 (de) * 2000-04-10 2001-10-17 Rohm And Haas Company Verfahren zum Bleichen von Kaolin Ton und anderen Mineralien und erhaltene, gebleichte Produkte
US6663677B2 (en) 2000-10-16 2003-12-16 Rohm And Haas Company Methods for use in wool whitening and garment washing
EP1478593A4 (de) * 2001-11-13 2008-07-02 Montgomery Chemicals Llc Wässrige borhydridzusammensetzungen
DE60301446T2 (de) * 2002-06-28 2006-06-14 Rohm & Haas Verfahren zur Aufhellung von Pulpe mit Hydrosulfitlösung
EP1418269B1 (de) * 2002-11-05 2009-02-11 Rohm And Haas Company Verfahren zum Bleichen von mechanischer Pulpe
US20040211533A1 (en) * 2003-04-28 2004-10-28 Qiang Huang Method for bleaching and color stripping recycled fibers
US20080052838A1 (en) * 2006-09-01 2008-03-06 Qiang Huang Method for leaching and brightening kaolin clay and other minerals
FI121114B (fi) 2007-05-04 2010-07-15 Kemira Oyj Ditioniitin valmistusmenetelmä
FI20086031L (fi) * 2008-10-31 2010-05-01 Kemira Oyj Valkaisumenetelmä
US20100224333A1 (en) 2009-03-09 2010-09-09 Prasad Duggirala Method and chemical composition to improve efficiency of mechanical pulp
US9932709B2 (en) 2013-03-15 2018-04-03 Ecolab Usa Inc. Processes and compositions for brightness improvement in paper production
US8662171B2 (en) * 2010-03-25 2014-03-04 Montgomery Chemicals, Llc Method and composition for oil enhanced recovery
EP3004287B1 (de) 2013-06-06 2021-08-18 Entegris, Inc. Zusammensetzungen und verfahren zum selektiven ätzen von titannitrid
CN103485212B (zh) * 2013-09-04 2016-05-11 北京泛博化学股份有限公司 利用拔色剂拔色的方法
CN111304940A (zh) * 2020-03-27 2020-06-19 江苏竹福科技有限公司 一种双组份一浴剥色剂及其剥色方法
CN113174771A (zh) * 2021-04-29 2021-07-27 玖龙纸业（东莞）有限公司 一种涂布白板纸浆料的三元漂白方法

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2991152A (en) * 1957-01-16 1961-07-04 Goerrig Method of preparing sodium and potassium hyposulphite
US3167515A (en) * 1961-07-31 1965-01-26 Metal Hydrides Inc Preparation of alkali metal hydrosulfites
US3290161A (en) * 1963-10-04 1966-12-06 Fmc Corp Clay bleaching
US3795491A (en) * 1972-01-26 1974-03-05 Ventron Corp Method for preparing aqueous solutions of sodium borohydride of high concentration
US3933676A (en) * 1974-04-08 1976-01-20 Ventron Corporation Stabilized aqueous solutions of sodium borohydride
EP0027369A1 (de) * 1979-10-12 1981-04-22 Thiokol Corporation Stabile Ausgangslösung zur Herstellung von Hydrosulfit und ihre Verwendung beim Bleichen von Holzschliff, beim Aufhellen von Kaolinton und bei der Reduktion von Küpenfarbstoffen in ihre Leuko-Form

Also Published As

Publication number Publication date
WO1988010334A1 (en) 1988-12-29
FI92416C (fi) 1994-11-10
US4919755A (en) 1990-04-24
EP0319563B1 (de) 1991-10-02
FI890772A (fi) 1989-02-17
SE8702616L (sv) 1988-12-25
FI92416B (fi) 1994-07-29
EP0319563A1 (de) 1989-06-14
DE3865298D1 (de) 1991-11-07
NO890764D0 (no) 1989-02-22
NO170346C (no) 1992-10-07
SE8702616D0 (sv) 1987-06-24
FI890772A0 (fi) 1989-02-17
NO890764L (no) 1989-02-22
NO170346B (no) 1992-06-29
CA1295440C (en) 1992-02-11
SE457647B (sv) 1989-01-16

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Legal Events

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