FR2207215B1 - - Google Patents

Info

Publication number
FR2207215B1
FR2207215B1 FR7341016A FR7341016A FR2207215B1 FR 2207215 B1 FR2207215 B1 FR 2207215B1 FR 7341016 A FR7341016 A FR 7341016A FR 7341016 A FR7341016 A FR 7341016A FR 2207215 B1 FR2207215 B1 FR 2207215B1
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
FR7341016A
Other versions
FR2207215A1 (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.)
Ahlstrom Corp
Original Assignee
Ahlstrom Corp
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 Ahlstrom Corp filed Critical Ahlstrom Corp
Publication of FR2207215A1 publication Critical patent/FR2207215A1/fr
Application granted granted Critical
Publication of FR2207215B1 publication Critical patent/FR2207215B1/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
    • D21C9/1036—Use of compounds accelerating or improving the efficiency of the processes
FR7341016A 1972-11-16 1973-11-16 Expired FR2207215B1 (fr)

Applications Claiming Priority (1)

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

Publications (2)

Publication Number Publication Date
FR2207215A1 FR2207215A1 (fr) 1974-06-14
FR2207215B1 true FR2207215B1 (fr) 1976-05-07

Family

ID=8508173

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7341016A Expired FR2207215B1 (fr) 1972-11-16 1973-11-16

Country Status (8)

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

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1031110A (fr) * 1974-12-19 1978-05-16 Macmillan Bloedel Limited Methode a haut rendement pour la preparation de la pate a papier
US4091749A (en) * 1975-01-02 1978-05-30 Macmillan Bloedel Limited Alkaline pulping of lignocellulosic material with amine pretreatment
FI51833C (fr) * 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
CA3059588A1 (fr) * 2017-04-17 2018-10-25 Board Of Trustees Of Michigan State University Procedes de depolymerisation de lignine a l'aide de 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 (fr) * 1970-05-13 1973-04-30 Mo Och Domsjoe Ab

Also Published As

Publication number Publication date
NO137015B (no) 1977-09-05
NO137015C (no) 1977-12-14
FR2207215A1 (fr) 1974-06-14
FI52877B (fr) 1977-08-31
US3951732A (en) 1976-04-20
CA1026908A (fr) 1978-02-28
JPS49133601A (fr) 1974-12-23
DE2355741B2 (de) 1975-11-27
DE2355741A1 (de) 1974-06-06
ES420507A1 (es) 1976-08-01
JPS5112723B2 (fr) 1976-04-22

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Legal Events

Date Code Title Description
ST Notification of lapse