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FI791681A - BLEKNING AV MASS - Google Patents

BLEKNING AV MASS

Info

Publication number
FI791681A
FI791681A FI791681A FI791681A FI791681A FI 791681 A FI791681 A FI 791681A FI 791681 A FI791681 A FI 791681A FI 791681 A FI791681 A FI 791681A FI 791681 A FI791681 A FI 791681A
Authority
FI
Finland
Prior art keywords
blekning
mass
Prior art date
Application number
FI791681A
Other languages
Finnish (fi)
Other versions
FI71177B (en
FI71177C (en
Inventor
Bronislav Henri May
Original Assignee
Monsanto Europe Sa
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 Europe Sa filed Critical Monsanto Europe Sa
Publication of FI791681A publication Critical patent/FI791681A/en
Publication of FI71177B publication Critical patent/FI71177B/en
Application granted granted Critical
Publication of FI71177C publication Critical patent/FI71177C/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
    • D21C9/1026—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)
FI791681A 1978-05-26 1979-05-25 BLEKNING AV MASS FI71177C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB2290178 1978-05-26
GB2290178 1978-05-26

Publications (3)

Publication Number Publication Date
FI791681A true FI791681A (en) 1979-11-27
FI71177B FI71177B (en) 1986-08-14
FI71177C FI71177C (en) 1986-11-24

Family

ID=10186899

Family Applications (1)

Application Number Title Priority Date Filing Date
FI791681A FI71177C (en) 1978-05-26 1979-05-25 BLEKNING AV MASS

Country Status (7)

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

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE434284B (en) * 1980-05-07 1984-07-16 Mo Och Domsjoe Ab PROCEDURES FOR OXYGEN DELIGNIFICATION OF CHEMICAL CONSUMPED CELLULOSAMASSA TO WHICH AROMATIC DIAMINES ARE PROVIDED
SE441192B (en) * 1980-05-27 1985-09-16 Mo Och Domsjoe Ab PROCEDURE FOR DELIGNIFICATION OF CHEMICAL CELLULOSAMASSA WITH OXYGEN IN THE PRESENCE OF ONE OR MULTIPLE NEUTRALIZING AGENTS
CN102229619A (en) * 2011-04-26 2011-11-02 河南清水源科技股份有限公司 Tetraethylenepentamine heptamethylene phosphonic acid and preparation technology thereof
CN111344455B (en) 2017-09-11 2022-10-28 索理思科技公司 Method for enhancing oxygen delignification of chemical wood pulp

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE785964A (en) * 1971-07-07 1973-01-08 Monsanto Co CONDENSED DERIVATIVES OF POLYALKYLENEPOLYAMINES

Also Published As

Publication number Publication date
AU528265B2 (en) 1983-04-21
NO153309B (en) 1985-11-11
ZA792563B (en) 1980-10-29
CA1120210A (en) 1982-03-23
NO153309C (en) 1986-02-19
FI71177B (en) 1986-08-14
FR2426767B1 (en) 1985-03-22
NO791728L (en) 1979-11-27
AU4723379A (en) 1979-11-29
FR2426767A1 (en) 1979-12-21
SE7904430L (en) 1979-11-27
FI71177C (en) 1986-11-24

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Legal Events

Date Code Title Description
MM Patent lapsed

Owner name: MONSANTO EUROPE S.A.