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FR2322235B1 - - Google Patents

Info

Publication number
FR2322235B1
FR2322235B1 FR7605307A FR7605307A FR2322235B1 FR 2322235 B1 FR2322235 B1 FR 2322235B1 FR 7605307 A FR7605307 A FR 7605307A FR 7605307 A FR7605307 A FR 7605307A FR 2322235 B1 FR2322235 B1 FR 2322235B1
Authority
FR
France
Legal status (The legal status 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 status listed.)
Expired
Application number
FR7605307A
Other versions
FR2322235A1 (fr
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Evonik Operations GmbH
Original Assignee
Degussa GmbH
Deutsche Gold und Silber Scheideanstalt
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 GmbH, Deutsche Gold und Silber Scheideanstalt filed Critical Degussa GmbH
Publication of FR2322235A1 publication Critical patent/FR2322235A1/fr
Application granted granted Critical
Publication of FR2322235B1 publication Critical patent/FR2322235B1/fr
Granted legal-status Critical Current

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)
FR7605307A 1975-08-30 1976-02-25 Attaque blanchissante de la cellulose avec reduction importante de la quantite de chlore utilisee Granted FR2322235A1 (fr)

Applications Claiming Priority (1)

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

Publications (2)

Publication Number Publication Date
FR2322235A1 FR2322235A1 (fr) 1977-03-25
FR2322235B1 true FR2322235B1 (fr) 1979-04-06

Family

ID=5955230

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7605307A Granted FR2322235A1 (fr) 1975-08-30 1976-02-25 Attaque blanchissante de la cellulose avec reduction importante de la quantite de chlore utilisee

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
AT340765B (de) 1978-01-10
FI62869B (fi) 1982-11-30
FR2322235A1 (fr) 1977-03-25
SE7602842L (sv) 1977-03-01
YU301275A (en) 1983-04-27
FI753314A7 (fr) 1977-03-01
IT1055792B (it) 1982-01-11
BE836462R (fr) 1976-06-09
ES443318A1 (es) 1977-05-01
GB1544216A (en) 1979-04-19
FI62869C (fi) 1983-03-10
ATA861075A (de) 1977-04-15
DE2538673A1 (de) 1977-03-03
NO145344B (no) 1981-11-23
CA1080406A (fr) 1980-07-01
DE2538673C2 (de) 1986-01-16
NO754077L (fr) 1977-03-01
AR221678A1 (es) 1981-03-13
YU37370B (en) 1984-08-31
CH620002A5 (en) 1980-10-31
NL7513942A (nl) 1977-03-02
BR7603006A (pt) 1977-05-31
ZA757822B (en) 1976-11-24

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Legal Events

Date Code Title Description
ST Notification of lapse