FI52877B - - Google Patents

Info

Publication number
FI52877B
FI52877B FI3233/72A FI323372A FI52877B FI 52877 B FI52877 B FI 52877B FI 3233/72 A FI3233/72 A FI 3233/72A FI 323372 A FI323372 A FI 323372A FI 52877 B FI52877 B FI 52877B
Authority
FI
Finland
Application number
FI3233/72A
Other languages
Finnish (fi)
Inventor
Eero Vilhelm Sjoestroem
Olli Tapio Vaelttilae
Original Assignee
Ahlstroem Oy
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 Ahlstroem Oy filed Critical Ahlstroem Oy
Priority to FI3233/72A priority Critical patent/FI52877B/fi
Priority to CA184,952A priority patent/CA1026908A/en
Priority to US05/412,794 priority patent/US3951732A/en
Priority to DE2355741A priority patent/DE2355741B2/de
Priority to ES420507A priority patent/ES420507A1/es
Priority to NO4396/73A priority patent/NO137015C/no
Priority to JP48129654A priority patent/JPS5112723B2/ja
Priority to FR7341016A priority patent/FR2207215B1/fr
Application granted granted Critical
Publication of FI52877B publication Critical patent/FI52877B/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
    • D21C9/1026—Other features in bleaching processes
    • D21C9/1036—Use of compounds accelerating or improving the efficiency of the processes

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Paper (AREA)
  • Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
  • Coloring Foods And Improving Nutritive Qualities (AREA)
FI3233/72A 1972-11-16 1972-11-16 FI52877B (ko)

Priority Applications (8)

Application Number Priority Date Filing Date Title
FI3233/72A FI52877B (ko) 1972-11-16 1972-11-16
CA184,952A CA1026908A (en) 1972-11-16 1973-11-02 Delignification and bleaching of wood pulp with oxygen in the presence of triethanolamine
US05/412,794 US3951732A (en) 1972-11-16 1973-11-05 Delignification and bleaching of wood pulp with oxygen in the presence of triethanolamine
DE2355741A DE2355741B2 (de) 1972-11-16 1973-11-08 Verfahren zum Stabilisieren von kohlehydrathaltigem Faserstoff, insbesondere Holzfaserstoff im Zusammenhang mit einer alkalischen Sauerstoffbehandlung
ES420507A ES420507A1 (es) 1972-11-16 1973-11-13 Procedimiento para estabilizar un material de fibra con hi-dratos de carbono en un tratamiento oxidante alcalino.
NO4396/73A NO137015C (no) 1972-11-16 1973-11-15 Fremgangsm}te for stabilisering av karbonhydratholdig fibermateriale ved oksydativ alkalisk behandling
JP48129654A JPS5112723B2 (ko) 1972-11-16 1973-11-16
FR7341016A FR2207215B1 (ko) 1972-11-16 1973-11-16

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FI3233/72A FI52877B (ko) 1972-11-16 1972-11-16

Publications (1)

Publication Number Publication Date
FI52877B true FI52877B (ko) 1977-08-31

Family

ID=8508173

Family Applications (1)

Application Number Title Priority Date Filing Date
FI3233/72A FI52877B (ko) 1972-11-16 1972-11-16

Country Status (8)

Country Link
US (1) US3951732A (ko)
JP (1) JPS5112723B2 (ko)
CA (1) CA1026908A (ko)
DE (1) DE2355741B2 (ko)
ES (1) ES420507A1 (ko)
FI (1) FI52877B (ko)
FR (1) FR2207215B1 (ko)
NO (1) NO137015C (ko)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1031110A (en) * 1974-12-19 1978-05-16 Macmillan Bloedel Limited High yield pulping process
US4091749A (en) * 1975-01-02 1978-05-30 Macmillan Bloedel Limited Alkaline pulping of lignocellulosic material with amine pretreatment
FI51833C (ko) * 1975-03-18 1978-01-24 Ahlstroem Oy
US4002526A (en) * 1975-10-10 1977-01-11 International Paper Company Oxygen-alkali delignification of low consistency wood pulp
NZ185937A (en) * 1976-12-13 1979-10-25 Australian Paper Manufacturers Delignification of lignocellulosic material with amine based liquor containing quinones or hydroqinones
SE434284B (sv) * 1980-05-07 1984-07-16 Mo Och Domsjoe Ab Forfarande vid syrgasdelignifiering av kemiskt uppsluten cellulosamassa varvid aromatiska diaminer tillfores
US4622100A (en) * 1984-10-01 1986-11-11 International Paper Company Process for the delignification of lignocellulosic material with oxygen, ferricyanide, and a protector
US5641385A (en) * 1995-01-17 1997-06-24 The Dow Chemical Company Use of ethyleneamine for washing pulp containing lignin
AUPN352095A0 (en) * 1995-06-13 1995-07-06 Ici Australia Operations Proprietary Limited Peroxide bleaching of pulp
JP3698178B2 (ja) * 1995-09-22 2005-09-21 三菱瓦斯化学株式会社 製紙用化学パルプの漂白方法
WO2018195000A1 (en) * 2017-04-17 2018-10-25 Board Of Trustees Of Michigan State University Methods for lignin depolymerization using thiols

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2192202A (en) * 1936-10-23 1940-03-05 Floyd C Peterson Pulping process
US2668110A (en) * 1948-06-18 1954-02-02 Spencer Method for fiber liberation in cotton stalks and the pulp
FR1387853A (fr) * 1963-09-19 1965-02-05 Air Liquide Délignification et blanchiment des pâtes cellulosiques chimiques et mi-chimiques
FR1404605A (fr) * 1964-05-22 1965-07-02 Air Liquide Perfectionnement à la délignification des pâtes chimiques de cellulose
SE355614B (ko) * 1970-05-13 1973-04-30 Mo Och Domsjoe Ab

Also Published As

Publication number Publication date
US3951732A (en) 1976-04-20
NO137015B (no) 1977-09-05
DE2355741A1 (de) 1974-06-06
CA1026908A (en) 1978-02-28
ES420507A1 (es) 1976-08-01
JPS5112723B2 (ko) 1976-04-22
FR2207215A1 (ko) 1974-06-14
JPS49133601A (ko) 1974-12-23
DE2355741B2 (de) 1975-11-27
NO137015C (no) 1977-12-14
FR2207215B1 (ko) 1976-05-07

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