BE878841A - PROCESS FOR COMPLETELY BLEACHING A CELLULOSIC PASTE AND PRODUCT OBTAINED BY THIS PROCESS - Google Patents

PROCESS FOR COMPLETELY BLEACHING A CELLULOSIC PASTE AND PRODUCT OBTAINED BY THIS PROCESS

Info

Publication number
BE878841A
BE878841A BE6/46946A BE6046946A BE878841A BE 878841 A BE878841 A BE 878841A BE 6/46946 A BE6/46946 A BE 6/46946A BE 6046946 A BE6046946 A BE 6046946A BE 878841 A BE878841 A BE 878841A
Authority
BE
Belgium
Prior art keywords
product obtained
cellulosic paste
bleaching
completely
completely bleaching
Prior art date
Application number
BE6/46946A
Other languages
French (fr)
Original Assignee
Degussa
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 Degussa filed Critical Degussa
Publication of BE878841A publication Critical patent/BE878841A/en

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
    • D21C9/1057—Multistage, with compounds cited in more than one sub-group D21C9/10, D21C9/12, D21C9/16

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Paper (AREA)
  • Polysaccharides And Polysaccharide Derivatives (AREA)
  • Detergent Compositions (AREA)
BE6/46946A 1978-09-21 1979-09-17 PROCESS FOR COMPLETELY BLEACHING A CELLULOSIC PASTE AND PRODUCT OBTAINED BY THIS PROCESS BE878841A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2841013A DE2841013C2 (en) 1978-09-21 1978-09-21 Process for full bleaching of pulp

Publications (1)

Publication Number Publication Date
BE878841A true BE878841A (en) 1980-03-17

Family

ID=6049994

Family Applications (1)

Application Number Title Priority Date Filing Date
BE6/46946A BE878841A (en) 1978-09-21 1979-09-17 PROCESS FOR COMPLETELY BLEACHING A CELLULOSIC PASTE AND PRODUCT OBTAINED BY THIS PROCESS

Country Status (11)

Country Link
AT (1) AT372426B (en)
BE (1) BE878841A (en)
BR (1) BR7905860A (en)
CA (1) CA1122358A (en)
CH (1) CH641515A5 (en)
DE (1) DE2841013C2 (en)
FI (1) FI68681C (en)
FR (1) FR2436846A1 (en)
IT (1) IT1119314B (en)
NO (1) NO153342C (en)
SE (1) SE445366B (en)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3937932A1 (en) * 1989-11-15 1991-05-16 Holtzmann & Cie Ag E Delignification and bleaching of pulp with alkali chlorite - by adding chlorite before acidification to produce nascent reagent, minimising pollution
SE466060C (en) 1990-02-13 1995-09-11 Moelnlycke Ab Absorbent chemitermomechanical mass and preparation thereof
US5607546A (en) * 1990-02-13 1997-03-04 Molnlycke Ab CTMP-process
AU642971B2 (en) * 1990-02-19 1993-11-04 Paper Australia Pty Ltd Bleaching of paper pulp
NZ237019A (en) * 1990-02-19 1992-11-25 Amcor Ltd Bleaching paper pulp by initially treating with oxygen and/or hydrogen peroxide and subsequently treating with a bleaching agent without intervening washing steps
US6398908B1 (en) 1991-04-30 2002-06-04 Eka Nobel Ab Process for acid bleaching of lignocellulose-containing pulp with a magnesium compound
SE500353C2 (en) * 1992-10-26 1994-06-06 Sca Wifsta Oestrand Ab Peroxide bleaching of sulfate pulp with the addition of magnesium before bleaching
SE9203366L (en) * 1992-11-11 1994-05-12 Mo Och Domsjoe Ab Process for delignification and / or bleaching of cellulose pulp
SE501325E (en) * 1993-01-29 1999-09-20 Kvaerner Pulping Tech Process for chlorine-free bleaching of pulp, wherein the pulp is acidified with acetic acid in the treatment with complexing agents
SE502706E (en) * 1994-04-05 1999-09-27 Mo Och Domsjoe Ab Preparation of bleached cellulose pulp by bleaching with chlorine dioxide and treatment of complexing agents in the same step

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE582239C (en) * 1929-03-16 1933-09-14 I G Farbenindustrie Akt Ges Process for bleaching bast fibers, in particular linen and hemp, in the form of yarns and fabrics as well as in the form of raw fibers using superoxide and hypochlorite balls
FR1010501A (en) * 1948-08-31 1952-06-12 Papiers Abadie Sa Des Cellulose pulp bleaching process
SE335053B (en) * 1969-05-13 1971-05-10 Mo Och Domsjoe Ab
DE2219504C2 (en) * 1972-04-21 1974-10-03 Deutsche Gold- Und Silber-Scheideanstalt Vormals Roessler, 6000 Frankfurt Multi-stage bleaching of cellulose with significantly reduced use of chlorine
DE2327900C3 (en) * 1973-06-01 1985-02-07 Degussa Ag, 6000 Frankfurt Bleaching of cellulose with considerably reduced use of chlorine
DE2721402C2 (en) * 1977-05-12 1984-04-12 Degussa Ag, 6000 Frankfurt Process for bleaching pulp

Also Published As

Publication number Publication date
DE2841013A1 (en) 1980-04-03
CA1122358A (en) 1982-04-27
IT1119314B (en) 1986-03-10
FI68681B (en) 1985-06-28
ATA620579A (en) 1983-02-15
SE445366B (en) 1986-06-16
BR7905860A (en) 1980-05-20
DE2841013C2 (en) 1984-06-07
IT7968380A0 (en) 1979-06-29
FR2436846A1 (en) 1980-04-18
NO153342B (en) 1985-11-18
AT372426B (en) 1983-10-10
FI68681C (en) 1985-10-10
FR2436846B1 (en) 1982-08-27
NO792067L (en) 1980-03-24
NO153342C (en) 1986-02-26
SE7907850L (en) 1980-03-22
FI792115A (en) 1980-03-22
CH641515A5 (en) 1984-02-29

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Legal Events

Date Code Title Description
RE Patent lapsed

Owner name: DEUTSCHE GOLD- UND SILBER-SCHEIDEANSTALT VORMALS

Effective date: 19870930