SE457647B - Saett vid blekning av material med ditionitloesning - Google Patents

Saett vid blekning av material med ditionitloesning

Info

Publication number
SE457647B
SE457647B SE8702616A SE8702616A SE457647B SE 457647 B SE457647 B SE 457647B SE 8702616 A SE8702616 A SE 8702616A SE 8702616 A SE8702616 A SE 8702616A SE 457647 B SE457647 B SE 457647B
Authority
SE
Sweden
Prior art keywords
solution
borohydride
weight
dithionite
bleaching
Prior art date
Application number
SE8702616A
Other languages
English (en)
Swedish (sv)
Other versions
SE8702616L (sv
SE8702616D0 (sv
Inventor
I Maansson
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
Priority to SE8702616A priority Critical patent/SE457647B/sv
Publication of SE8702616D0 publication Critical patent/SE8702616D0/xx
Priority to AT88906162T priority patent/ATE68023T1/de
Priority to EP88906162A priority patent/EP0319563B1/de
Priority to US07/317,473 priority patent/US4919755A/en
Priority to DE8888906162T priority patent/DE3865298D1/de
Priority to PCT/SE1988/000320 priority patent/WO1988010334A1/en
Priority to CA000569885A priority patent/CA1295440C/en
Publication of SE8702616L publication Critical patent/SE8702616L/xx
Publication of SE457647B publication Critical patent/SE457647B/sv
Priority to FI890772A priority patent/FI92416C/fi
Priority to NO890764A priority patent/NO170346C/no

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

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Inorganic Chemistry (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)
SE8702616A 1987-06-24 1987-06-24 Saett vid blekning av material med ditionitloesning SE457647B (sv)

Priority Applications (9)

Application Number Priority Date Filing Date Title
SE8702616A SE457647B (sv) 1987-06-24 1987-06-24 Saett vid blekning av material med ditionitloesning
PCT/SE1988/000320 WO1988010334A1 (en) 1987-06-24 1988-06-14 Process for bleaching of materials with a dithionite solution
DE8888906162T DE3865298D1 (de) 1987-06-24 1988-06-14 Verfahren zum bleichen von material mit dithionitloesung.
EP88906162A EP0319563B1 (de) 1987-06-24 1988-06-14 Verfahren zum bleichen von material mit dithionitlösung
US07/317,473 US4919755A (en) 1987-06-24 1988-06-14 Process for bleaching
AT88906162T ATE68023T1 (de) 1987-06-24 1988-06-14 Verfahren zum bleichen von material mit dithionitloesung.
CA000569885A CA1295440C (en) 1987-06-24 1988-06-20 Process for bleaching
FI890772A FI92416C (fi) 1987-06-24 1989-02-17 Valkaisumenetelmä
NO890764A NO170346C (no) 1987-06-24 1989-02-22 Fremgangsmaate ved bleking av materialer med en ditionitt opploesning

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE8702616A SE457647B (sv) 1987-06-24 1987-06-24 Saett vid blekning av material med ditionitloesning

Publications (3)

Publication Number Publication Date
SE8702616D0 SE8702616D0 (sv) 1987-06-24
SE8702616L SE8702616L (sv) 1988-12-25
SE457647B true SE457647B (sv) 1989-01-16

Family

ID=20368961

Family Applications (1)

Application Number Title Priority Date Filing Date
SE8702616A SE457647B (sv) 1987-06-24 1987-06-24 Saett vid blekning av material med ditionitloesning

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
US5094833A (en) * 1989-01-05 1992-03-10 Morton International, Inc. High yield sodium hydrosulfite generation
US5336479A (en) * 1989-01-05 1994-08-09 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
WO2003042096A1 (en) * 2001-11-13 2003-05-22 Montgomery Chemicals, Llc Aqueous borohydride compositions
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
BRPI0703514A (pt) * 2006-09-01 2008-04-22 Rohm & Haas método para lixiviação e formação de brilho em argilas de caulim
FI121114B (fi) 2007-05-04 2010-07-15 Kemira Oyj Ditioniitin valmistusmenetelmä
FI20086031L (fi) * 2008-10-31 2010-05-01 Kemira Oyj Valkaisumenetelmä
US9932709B2 (en) 2013-03-15 2018-04-03 Ecolab Usa Inc. Processes and compositions for brightness improvement in paper production
US20100224333A1 (en) 2009-03-09 2010-09-09 Prasad Duggirala Method and chemical composition to improve efficiency of mechanical pulp
US8662171B2 (en) * 2010-03-25 2014-03-04 Montgomery Chemicals, Llc Method and composition for oil enhanced recovery
CN111394100A (zh) 2013-06-06 2020-07-10 恩特格里斯公司 用于选择性蚀刻氮化钛的组合物和方法
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
US4919755A (en) 1990-04-24
NO170346B (no) 1992-06-29
FI92416B (fi) 1994-07-29
CA1295440C (en) 1992-02-11
FI92416C (fi) 1994-11-10
DE3865298D1 (de) 1991-11-07
NO890764L (no) 1989-02-22
WO1988010334A1 (en) 1988-12-29
EP0319563B1 (de) 1991-10-02
NO170346C (no) 1992-10-07
SE8702616L (sv) 1988-12-25
ATE68023T1 (de) 1991-10-15
SE8702616D0 (sv) 1987-06-24
EP0319563A1 (de) 1989-06-14
FI890772A (fi) 1989-02-17
NO890764D0 (no) 1989-02-22
FI890772A0 (fi) 1989-02-17

Similar Documents

Publication Publication Date Title
SE457647B (sv) Saett vid blekning av material med ditionitloesning
DE2622458C3 (de) Verfahren zur Stabilisierung von Natriumpercarbonat
DE19608000A1 (de) Verfahren zur Herstellung von körnigem Natriumpercarbonat
US3985674A (en) Stabilized sodium dithionite solutions
KR960012111B1 (ko) 생물원성 실리카로부터 가용성 규산염 청정액의 제조방법 및 이로부터 제조된 가용성 규산염 청정액
EP0004080B1 (de) Verfahren zur Herstellung von Distickstoffmonoxid
DE2800760C2 (de) Verfahren zur Herstellung von Natriumpercarbonat aus einer Sodalösung bzw. -suspension
US4357256A (en) Sodium hydrosulfite composition
DE1054076B (de) Verfahren zur Herstellung von Chlordioxyd
DE1546252A1 (de) Verfahren zum Bleichen von Holzpulpen mit niedrigem Zellulosegehalt
US2719075A (en) Purification of alkali metal sulfite liquors
US3937632A (en) Method for brightening and whitening clays utilizing sodium borohydride
DE668140C (de) Verfahren zur Herstellung wasserloeslicher Chlorite
US1548358A (en) Plaster of paris and method of making the same
US2397389A (en) Method for bleaching shellac
US4455251A (en) Aqueous solution of alkali metal compositions
NO157182B (no) Fremgangsmaate til aa inhibere korrosjon paa utstyr av titan eller titanholdige legeringer, og anvendelse av fremgangsmaaten ved blekning av cellulosematerialer eller papirmasser
US2515276A (en) Method of making a foamproducing composition
DE4400954B4 (de) Verfahren zur Helligkeitssteigerung bei der Bleiche von Holzstoffen mit Wasserstoffperoxid
EP0551298B1 (de) Peroxidische zusammensetzungen
US2918351A (en) Method of producing purified stabilized sodium hypochlorite
DE69028297T2 (de) Desoxidationsmittel für kessel und verfahren zum entfernen von gelöstem sauerstoff aus kesselwasser
US3046185A (en) Slime control agents and disinfectants in paper mill white water
US2421380A (en) Method of treating sugar
DE675615C (de) Herstellung von Alkaliperboraten

Legal Events

Date Code Title Description
NAV Patent application has lapsed

Ref document number: 8702616-7

Effective date: 19930226