FR2189572B1 - - Google Patents

Info

Publication number
FR2189572B1
FR2189572B1 FR7322744A FR7322744A FR2189572B1 FR 2189572 B1 FR2189572 B1 FR 2189572B1 FR 7322744 A FR7322744 A FR 7322744A FR 7322744 A FR7322744 A FR 7322744A FR 2189572 B1 FR2189572 B1 FR 2189572B1
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
FR7322744A
Other languages
French (fr)
Other versions
FR2189572A1 (en
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.)
Billeruds AB
Original Assignee
Billeruds AB
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 Billeruds AB filed Critical Billeruds AB
Publication of FR2189572A1 publication Critical patent/FR2189572A1/en
Application granted granted Critical
Publication of FR2189572B1 publication Critical patent/FR2189572B1/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
    • D21C9/1026—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)
FR7322744A 1972-06-22 1973-06-21 Bleaching alkaline cellulosic pulp with oxygen - in presence of formaldehyde, (m)ethanol isopropanol, glycerol, sorbitol etc, to ensure slow disintegration of cellulose Granted FR2189572A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE7208288A SE364323C (en) 1972-06-22 1972-06-22 WAY TO TREAT CELLULOSA MASS IN AN ALKALINE ENVIRONMENT

Publications (2)

Publication Number Publication Date
FR2189572A1 FR2189572A1 (en) 1974-01-25
FR2189572B1 true FR2189572B1 (en) 1977-05-13

Family

ID=20273652

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7322744A Granted FR2189572A1 (en) 1972-06-22 1973-06-21 Bleaching alkaline cellulosic pulp with oxygen - in presence of formaldehyde, (m)ethanol isopropanol, glycerol, sorbitol etc, to ensure slow disintegration of cellulose

Country Status (6)

Country Link
JP (1) JPS5536753B2 (en)
BR (1) BR7304637D0 (en)
CA (1) CA1001803A (en)
FI (1) FI60734C (en)
FR (1) FR2189572A1 (en)
SE (1) SE364323C (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4229252A (en) * 1979-01-11 1980-10-21 Weyerhaeuser Company Additives for ozone bleaching
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
BR9102464A (en) * 1991-06-14 1993-01-12 White Martins Sa IMPROVEMENT IN THE DESIGNIFICATION PROCESS WITH LIGNOCELLULOSIC PULP OXYGEN

Also Published As

Publication number Publication date
FI60734C (en) 1982-03-10
BR7304637D0 (en) 1974-09-05
CA1001803A (en) 1976-12-21
JPS5536753B2 (en) 1980-09-24
JPS4948903A (en) 1974-05-11
SE364323C (en) 1976-04-12
SE364323B (en) 1974-02-18
FR2189572A1 (en) 1974-01-25
FI60734B (en) 1981-11-30

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Legal Events

Date Code Title Description
ST Notification of lapse