CA1120210A - Blanchiment de la pate a papier - Google Patents

Blanchiment de la pate a papier

Info

Publication number
CA1120210A
CA1120210A CA000328345A CA328345A CA1120210A CA 1120210 A CA1120210 A CA 1120210A CA 000328345 A CA000328345 A CA 000328345A CA 328345 A CA328345 A CA 328345A CA 1120210 A CA1120210 A CA 1120210A
Authority
CA
Canada
Prior art keywords
pulp
alkali metal
metal salt
concentration
salt
Prior art date
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
CA000328345A
Other languages
English (en)
Inventor
Bronislav H. May
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.)
Solutia Inc
Original Assignee
Monsanto Co
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 Monsanto Co filed Critical Monsanto Co
Application granted granted Critical
Publication of CA1120210A publication Critical patent/CA1120210A/fr
Expired 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
    • D21C9/1026—Other features in bleaching processes
    • D21C9/1042—Use of chelating agents

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Paper (AREA)
  • Cereal-Derived Products (AREA)
CA000328345A 1978-05-26 1979-05-25 Blanchiment de la pate a papier Expired CA1120210A (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB2290178 1978-05-26
GB22901/78 1978-05-26

Publications (1)

Publication Number Publication Date
CA1120210A true CA1120210A (fr) 1982-03-23

Family

ID=10186899

Family Applications (1)

Application Number Title Priority Date Filing Date
CA000328345A Expired CA1120210A (fr) 1978-05-26 1979-05-25 Blanchiment de la pate a papier

Country Status (7)

Country Link
AU (1) AU528265B2 (fr)
CA (1) CA1120210A (fr)
FI (1) FI71177C (fr)
FR (1) FR2426767A1 (fr)
NO (1) NO153309C (fr)
SE (1) SE7904430L (fr)
ZA (1) ZA792563B (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102229619A (zh) * 2011-04-26 2011-11-02 河南清水源科技股份有限公司 四乙烯五胺七亚甲基膦酸及其生产工艺
WO2019051013A1 (fr) 2017-09-11 2019-03-14 Solenis Technologies, L.P. Procédé d'amélioration de la délignification à l'oxygène de pâtes chimiques de bois

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE434284B (sv) * 1980-05-07 1984-07-16 Mo Och Domsjoe Ab Forfarande vid syrgasdelignifiering av kemiskt uppsluten cellulosamassa varvid aromatiska diaminer tillfores
SE441192B (sv) * 1980-05-27 1985-09-16 Mo Och Domsjoe Ab Forfarande for delignifiering av kemisk cellulosamassa med syrgas i nervaro av ett eller flera neutralisationsmedel

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE785964A (fr) * 1971-07-07 1973-01-08 Monsanto Co Derives condenses de polyalkylenepolyamines

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102229619A (zh) * 2011-04-26 2011-11-02 河南清水源科技股份有限公司 四乙烯五胺七亚甲基膦酸及其生产工艺
WO2019051013A1 (fr) 2017-09-11 2019-03-14 Solenis Technologies, L.P. Procédé d'amélioration de la délignification à l'oxygène de pâtes chimiques de bois
US11193237B2 (en) 2017-09-11 2021-12-07 Solenis Technologies, L.P. Method for enhanced oxygen delignification of chemical wood pulps

Also Published As

Publication number Publication date
SE7904430L (sv) 1979-11-27
NO153309B (no) 1985-11-11
AU528265B2 (en) 1983-04-21
FR2426767B1 (fr) 1985-03-22
FR2426767A1 (fr) 1979-12-21
NO153309C (no) 1986-02-19
ZA792563B (en) 1980-10-29
FI71177C (fi) 1986-11-24
NO791728L (no) 1979-11-27
AU4723379A (en) 1979-11-29
FI71177B (fi) 1986-08-14
FI791681A7 (fi) 1979-11-27

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Legal Events

Date Code Title Description
MKEX Expiry