NO890764D0 - Fremgangsmaate ved bleking. - Google Patents

Fremgangsmaate ved bleking.

Info

Publication number
NO890764D0
NO890764D0 NO890764A NO890764A NO890764D0 NO 890764 D0 NO890764 D0 NO 890764D0 NO 890764 A NO890764 A NO 890764A NO 890764 A NO890764 A NO 890764A NO 890764 D0 NO890764 D0 NO 890764D0
Authority
NO
Norway
Prior art keywords
pct
solution
bleaching
borohydride
sec
Prior art date
Application number
NO890764A
Other languages
English (en)
Other versions
NO890764L (no
NO170346B (no
NO170346C (no
Inventor
Inge 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
Publication of NO890764L publication Critical patent/NO890764L/no
Publication of NO890764D0 publication Critical patent/NO890764D0/no
Publication of NO170346B publication Critical patent/NO170346B/no
Publication of NO170346C publication Critical 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)
  • 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)
  • Solid-Sorbent Or Filter-Aiding Compositions (AREA)
  • Inks, Pencil-Leads, Or Crayons (AREA)
  • Dental Preparations (AREA)
  • Coloring Foods And Improving Nutritive Qualities (AREA)
NO890764A 1987-06-24 1989-02-22 Fremgangsmaate ved bleking av materialer med en ditionitt opploesning NO170346C (no)

Applications Claiming Priority (2)

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

Publications (4)

Publication Number Publication Date
NO890764L NO890764L (no) 1989-02-22
NO890764D0 true NO890764D0 (no) 1989-02-22
NO170346B NO170346B (no) 1992-06-29
NO170346C NO170346C (no) 1992-10-07

Family

ID=20368961

Family Applications (1)

Application Number Title Priority Date Filing Date
NO890764A NO170346C (no) 1987-06-24 1989-02-22 Fremgangsmaate ved bleking av materialer med en ditionitt opploesning

Country Status (9)

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

Families Citing this family (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1340248C (en) * 1989-01-05 1998-12-15 Morton International, Inc. High yield sodium hydrosulfite generation
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
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 (en) * 2000-04-10 2001-10-17 Rohm And Haas Company Methods for bleaching kaolin clay and other minerals and bleached products obtained by the method
US6663677B2 (en) 2000-10-16 2003-12-16 Rohm And Haas Company Methods for use in wool whitening and garment washing
CN1319850C (zh) * 2001-11-13 2007-06-06 蒙哥马利化学品有限责任公司 产生氢的含水燃料和提供能量的方法
EP1375735B1 (en) * 2002-06-28 2005-08-31 Rohm And Haas Company Method for brightening pulp with hydrosulfite solution
EP1418269B1 (en) * 2002-11-05 2009-02-11 Rohm And Haas Company Method for brightening virgin mechanical pulp
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
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
JP6723152B2 (ja) 2013-06-06 2020-07-15 インテグリス・インコーポレーテッド 窒化チタンを選択的にエッチングするための組成物及び方法
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 (en) * 1979-10-12 1981-04-22 Thiokol Corporation Stable precursor solution for the generation of hydrosulfite and use thereof in bleaching wood pulp, brightening kaolin clay and reducing vat dyestuffs to their leuco form

Also Published As

Publication number Publication date
SE8702616L (sv) 1988-12-25
NO890764L (no) 1989-02-22
NO170346B (no) 1992-06-29
CA1295440C (en) 1992-02-11
DE3865298D1 (de) 1991-11-07
SE457647B (sv) 1989-01-16
FI890772A0 (fi) 1989-02-17
ATE68023T1 (de) 1991-10-15
SE8702616D0 (sv) 1987-06-24
FI92416C (fi) 1994-11-10
NO170346C (no) 1992-10-07
US4919755A (en) 1990-04-24
WO1988010334A1 (en) 1988-12-29
FI92416B (fi) 1994-07-29
FI890772A (fi) 1989-02-17
EP0319563B1 (en) 1991-10-02
EP0319563A1 (en) 1989-06-14

Similar Documents

Publication Publication Date Title
NO890764D0 (no) Fremgangsmaate ved bleking.
DK0448659T3 (da) Fremgangsmåde og apparat til fremstilling af chlordioxid
FR2467910B1 (no)
DE3163240D1 (en) Process for the preparation of 1,5-dideoxy-1,5-imino-d-glucitol and its n-derivatives
GB2283016A (en) Scavenging of hydrogen sulphide
BR8400278A (pt) Composicao aquosa,processo para sua obtencao,utilizacao,processo para o tratamento previo de materiais fibrosos,banho aquoso,utilizacao e material fibroso
DE3877403D1 (de) Verfahren zum bleichen von zellstoffen.
ES528138A0 (es) Procedimiento para el blanqueo con peroxido de material conteniendo lignocelulosa
AU585956B2 (en) Method of low temperature bleaching with reduced amounts of chlorine requiring reduced bleaching intervals
ES550136A0 (es) Procedimiento para mejorar las propiedades de textiles que contienen o estan formados por fibras vegetales o animales naturales
NO903208L (no) Fremgangsmaate for fremstilling av halogenaminoaromatiske derivater.
ATE151824T1 (de) Aufschlussverfahren
EP0164534A3 (en) Process for bleaching cotton-containing fabrics with hypochlorite at elevated temperatures
SE8501338L (sv) Kokningsforfarande
ES484849A1 (es) Procedimiento para preparar composiciones blanqueantes pero-xigenadas
GB725953A (en) Improvements in or relating to methods for the bleaching of textile material consisting of polyamides
KR890012906A (ko) 엽연초 간근으로부터 콘크리이트에 사용되는 혼화제를 추출하는 방법
ES8101159A1 (es) Un procedimiento para la produccion de pasta de papel.
DE2963303D1 (en) 3-azabicyclo(3.1.0)hexane derivatives and process for their preparation
FI864574A0 (fi) Foerfarande foer att ge slitet intryck aot tyg.
ES438434A1 (es) Procedimiento para reforzar material lignocelulosico fibro- so.
KR830009309A (ko) 아염소산나트륨 함유의 처리용액체를 이용하는 단일과정에 의한 직포류의 풀빼기 및 표백처리법
ES8304061A1 (es) "un procedimiento para preparar 1-cloro-2,6-dinitro-4-(trifluorometil)benceno".
SU1360098A1 (ru) Способ активации графита
SU1828656A3 (ru) Способ получения твердого хозяйственного мыла