IT7968380A0 - PROCEDURE FOR WHITENING CELLULOSE - Google Patents

PROCEDURE FOR WHITENING CELLULOSE

Info

Publication number
IT7968380A0
IT7968380A0 IT7968380A IT6838079A IT7968380A0 IT 7968380 A0 IT7968380 A0 IT 7968380A0 IT 7968380 A IT7968380 A IT 7968380A IT 6838079 A IT6838079 A IT 6838079A IT 7968380 A0 IT7968380 A0 IT 7968380A0
Authority
IT
Italy
Prior art keywords
procedure
whitening
cellulose
whitening cellulose
Prior art date
Application number
IT7968380A
Other languages
Italian (it)
Other versions
IT1119314B (en
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 IT7968380A0 publication Critical patent/IT7968380A0/en
Application granted granted Critical
Publication of IT1119314B publication Critical patent/IT1119314B/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)
IT68380/79A 1978-09-21 1979-06-29 CELLULOSE WHITENING PROCEDURE IT1119314B (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 (2)

Publication Number Publication Date
IT7968380A0 true IT7968380A0 (en) 1979-06-29
IT1119314B IT1119314B (en) 1986-03-10

Family

ID=6049994

Family Applications (1)

Application Number Title Priority Date Filing Date
IT68380/79A IT1119314B (en) 1978-09-21 1979-06-29 CELLULOSE WHITENING PROCEDURE

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
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
AU642971B2 (en) * 1990-02-19 1993-11-04 Paper Australia Pty Ltd Bleaching of paper pulp
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
NO153342B (en) 1985-11-18
SE445366B (en) 1986-06-16
NO153342C (en) 1986-02-26
DE2841013C2 (en) 1984-06-07
FR2436846B1 (en) 1982-08-27
SE7907850L (en) 1980-03-22
BE878841A (en) 1980-03-17
FI68681C (en) 1985-10-10
AT372426B (en) 1983-10-10
FI792115A (en) 1980-03-22
FR2436846A1 (en) 1980-04-18
FI68681B (en) 1985-06-28
CA1122358A (en) 1982-04-27
IT1119314B (en) 1986-03-10
CH641515A5 (en) 1984-02-29
BR7905860A (en) 1980-05-20
NO792067L (en) 1980-03-24
ATA620579A (en) 1983-02-15

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