FI753314A - - Google Patents

Info

Publication number
FI753314A
FI753314A FI753314A FI753314A FI753314A FI 753314 A FI753314 A FI 753314A FI 753314 A FI753314 A FI 753314A FI 753314 A FI753314 A FI 753314A FI 753314 A FI753314 A FI 753314A
Authority
FI
Finland
Application number
FI753314A
Other languages
Finnish (fi)
Other versions
FI62869C (fi
FI62869B (fi
Inventor
Horst Krueger
Werner Traser
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 FI753314A publication Critical patent/FI753314A/fi
Application granted granted Critical
Publication of FI62869B publication Critical patent/FI62869B/fi
Publication of FI62869C publication Critical patent/FI62869C/fi

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)
  • Cosmetics (AREA)
FI753314A 1975-08-30 1975-11-25 Foerfarande i flera steg foer klorfattig helblekning av cellulosa FI62869C (fi)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2538673A DE2538673C2 (de) 1975-08-30 1975-08-30 Bleichaufschluß von Zellstoff mit erheblich reduziertem Chloreinsatz
DE2538673 1975-08-30

Publications (3)

Publication Number Publication Date
FI753314A true FI753314A (fr) 1977-03-01
FI62869B FI62869B (fi) 1982-11-30
FI62869C FI62869C (fi) 1983-03-10

Family

ID=5955230

Family Applications (1)

Application Number Title Priority Date Filing Date
FI753314A FI62869C (fi) 1975-08-30 1975-11-25 Foerfarande i flera steg foer klorfattig helblekning av cellulosa

Country Status (17)

Country Link
AR (1) AR221678A1 (fr)
AT (1) AT340765B (fr)
BE (1) BE836462R (fr)
BR (1) BR7603006A (fr)
CA (1) CA1080406A (fr)
CH (1) CH620002A5 (fr)
DE (1) DE2538673C2 (fr)
ES (1) ES443318A1 (fr)
FI (1) FI62869C (fr)
FR (1) FR2322235A1 (fr)
GB (1) GB1544216A (fr)
IT (1) IT1055792B (fr)
NL (1) NL7513942A (fr)
NO (1) NO145344B (fr)
SE (1) SE7602842L (fr)
YU (1) YU37370B (fr)
ZA (1) ZA757822B (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2416297A1 (fr) * 1978-01-31 1979-08-31 Europeen Cellulose Procede anti-polluant de blanchiment de pate a papier
FR2432574A1 (fr) * 1978-08-01 1980-02-29 Europeen Cellulose Procede de blanchiment de pate a papier
FR2572431B1 (fr) * 1984-10-25 1987-12-04 Centre Tech Ind Papier Procede pour la preparation des pates papetieres chimiques en vue du blanchiment.
EP0402335B2 (fr) * 1989-06-06 2001-03-14 Eka Chemicals AB Procédé de blanchiment de pâtes contenant de la lignocellulose
SE9001481L (sv) * 1990-04-23 1991-10-24 Eka Nobel Ab Reduktion av halogenorganiska foereningar i blekeriavlopp
SE466061B (sv) * 1990-04-23 1991-12-09 Eka Nobel Ab Blekning av kemisk massa genom behandling med foerst ett komplexbildande aemne och sedan ett peroxidinnehaallande aemne

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE753531C (de) * 1938-11-09 1953-05-18 Degussa Verfahren zum Bleichen von Zellstoff
DE2327900C3 (de) * 1973-06-01 1985-02-07 Degussa Ag, 6000 Frankfurt Bleichaufschluß von Zellstoff mit erheblich reduziertem Chloreinsatz

Also Published As

Publication number Publication date
BR7603006A (pt) 1977-05-31
NL7513942A (nl) 1977-03-02
ZA757822B (en) 1976-11-24
ES443318A1 (es) 1977-05-01
ATA861075A (de) 1977-04-15
NO145344B (no) 1981-11-23
BE836462R (fr) 1976-06-09
YU301275A (en) 1983-04-27
FR2322235B1 (fr) 1979-04-06
GB1544216A (en) 1979-04-19
FI62869C (fi) 1983-03-10
CH620002A5 (en) 1980-10-31
FR2322235A1 (fr) 1977-03-25
FI62869B (fi) 1982-11-30
CA1080406A (fr) 1980-07-01
AT340765B (de) 1978-01-10
NO754077L (fr) 1977-03-01
YU37370B (en) 1984-08-31
DE2538673C2 (de) 1986-01-16
DE2538673A1 (de) 1977-03-03
SE7602842L (sv) 1977-03-01
IT1055792B (it) 1982-01-11
AR221678A1 (es) 1981-03-13

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Legal Events

Date Code Title Description
MM Patent lapsed

Owner name: DEGUSSA AKTIENGESELLSCHAFT