IT1119314B - Procedimento per la sbianca della cellulosa - Google Patents

Procedimento per la sbianca della cellulosa

Info

Publication number
IT1119314B
IT1119314B IT68380/79A IT6838079A IT1119314B IT 1119314 B IT1119314 B IT 1119314B IT 68380/79 A IT68380/79 A IT 68380/79A IT 6838079 A IT6838079 A IT 6838079A IT 1119314 B IT1119314 B IT 1119314B
Authority
IT
Italy
Prior art keywords
cellulose
whitening procedure
whitening
procedure
cellulose whitening
Prior art date
Application number
IT68380/79A
Other languages
English (en)
Italian (it)
Other versions
IT7968380A0 (it
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/it
Application granted granted Critical
Publication of IT1119314B publication Critical patent/IT1119314B/it

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)
  • Detergent Compositions (AREA)
  • Polysaccharides And Polysaccharide Derivatives (AREA)
IT68380/79A 1978-09-21 1979-06-29 Procedimento per la sbianca della cellulosa IT1119314B (it)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2841013A DE2841013C2 (de) 1978-09-21 1978-09-21 Verfahren zur Vollbleiche von Zellstoff

Publications (2)

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

Family

ID=6049994

Family Applications (1)

Application Number Title Priority Date Filing Date
IT68380/79A IT1119314B (it) 1978-09-21 1979-06-29 Procedimento per la sbianca della cellulosa

Country Status (11)

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

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3937932A1 (de) * 1989-11-15 1991-05-16 Holtzmann & Cie Ag E Verfahren zum delignifizieren und bleichen von ungebleichten zellstoffsuspensionen mit alkalichlorit
SE466060C (sv) 1990-02-13 1995-07-11 Moelnlycke Ab Absorberande kemitermomekanisk massa och framställning därav
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 (sv) * 1992-10-26 1994-06-06 Sca Wifsta Oestrand Ab Peroxidblekning av sulfatmassa med tillsats av magnesium före blekningen
SE9203366L (sv) * 1992-11-11 1994-05-12 Mo Och Domsjoe Ab Förfarande vid delignifiering och/eller blekning av cellulosamassa
SE501325E (sv) * 1993-01-29 1999-06-09 Kvaerner Pulping Tech Förfarande för klorfri blekning av massa, varvid massan surgöres med ättiksyra vid behandlingen med komplexbildare
SE502706E (sv) * 1994-04-05 1999-06-18 Mo Och Domsjoe Ab Framställnng av blekt cellulosamassa genom blekning med klordioxid och behandling av komplexbildare i samma steg

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE582239C (de) * 1929-03-16 1933-09-14 I G Farbenindustrie Akt Ges Verfahren zum Bleichen von Bastfasern, insbesondere von Leinen und Hanf, in Form von Garnen und Geweben wie auch in Form von Rohfasern unter Verwendung von Superoxyd- und Hypochloritbaedern
FR1010501A (fr) * 1948-08-31 1952-06-12 Papiers Abadie Sa Des Procédé de blanchîment des pâtes cellulosiques
SE335053B (no) * 1969-05-13 1971-05-10 Mo Och Domsjoe Ab
DE2219504C2 (de) * 1972-04-21 1974-10-03 Deutsche Gold- Und Silber-Scheideanstalt Vormals Roessler, 6000 Frankfurt Mehrstufenbleiche von Zellstoffen mit erheblich reduziertem Chloreinsatz
DE2327900C3 (de) * 1973-06-01 1985-02-07 Degussa Ag, 6000 Frankfurt Bleichaufschluß von Zellstoff mit erheblich reduziertem Chloreinsatz
DE2721402C2 (de) * 1977-05-12 1984-04-12 Degussa Ag, 6000 Frankfurt Verfahren zum Bleichen von Zellstoff

Also Published As

Publication number Publication date
NO153342C (no) 1986-02-26
SE7907850L (sv) 1980-03-22
BE878841A (fr) 1980-03-17
CH641515A5 (en) 1984-02-29
NO792067L (no) 1980-03-24
DE2841013A1 (de) 1980-04-03
FI792115A (fi) 1980-03-22
FI68681C (fi) 1985-10-10
FR2436846A1 (fr) 1980-04-18
AT372426B (de) 1983-10-10
NO153342B (no) 1985-11-18
DE2841013C2 (de) 1984-06-07
ATA620579A (de) 1983-02-15
FR2436846B1 (no) 1982-08-27
FI68681B (fi) 1985-06-28
CA1122358A (en) 1982-04-27
BR7905860A (pt) 1980-05-20
IT7968380A0 (it) 1979-06-29
SE445366B (sv) 1986-06-16

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