BR7802645A - PROCESS FOR THE PRODUCTION OF CELLULOSES FROM CONIFERER WOODS BY THE DEMAGNESIUM SULPHITE PROCESS - Google Patents

PROCESS FOR THE PRODUCTION OF CELLULOSES FROM CONIFERER WOODS BY THE DEMAGNESIUM SULPHITE PROCESS

Info

Publication number
BR7802645A
BR7802645A BR7802645A BR7802645A BR7802645A BR 7802645 A BR7802645 A BR 7802645A BR 7802645 A BR7802645 A BR 7802645A BR 7802645 A BR7802645 A BR 7802645A BR 7802645 A BR7802645 A BR 7802645A
Authority
BR
Brazil
Prior art keywords
coniferer
demagnesium
woods
celluloses
production
Prior art date
Application number
BR7802645A
Other languages
Portuguese (pt)
Inventor
R Patt
Original Assignee
Escher Wyss Ag
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 Escher Wyss Ag filed Critical Escher Wyss Ag
Publication of BR7802645A publication Critical patent/BR7802645A/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
    • D21C1/00—Pretreatment of the finely-divided materials before digesting
    • D21C1/06—Pretreatment of the finely-divided materials before digesting with alkaline reacting compounds
    • 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
    • D21C3/00—Pulping cellulose-containing materials
    • D21C3/04—Pulping cellulose-containing materials with acids, acid salts or acid anhydrides
    • D21C3/06—Pulping cellulose-containing materials with acids, acid salts or acid anhydrides sulfur dioxide; sulfurous acid; bisulfites sulfites
    • D21C3/10—Pulping cellulose-containing materials with acids, acid salts or acid anhydrides sulfur dioxide; sulfurous acid; bisulfites sulfites magnesium bisulfite
BR7802645A 1977-05-03 1978-04-27 PROCESS FOR THE PRODUCTION OF CELLULOSES FROM CONIFERER WOODS BY THE DEMAGNESIUM SULPHITE PROCESS BR7802645A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH548977 1977-05-03

Publications (1)

Publication Number Publication Date
BR7802645A true BR7802645A (en) 1978-12-12

Family

ID=4294440

Family Applications (1)

Application Number Title Priority Date Filing Date
BR7802645A BR7802645A (en) 1977-05-03 1978-04-27 PROCESS FOR THE PRODUCTION OF CELLULOSES FROM CONIFERER WOODS BY THE DEMAGNESIUM SULPHITE PROCESS

Country Status (6)

Country Link
JP (1) JPS53139802A (en)
AT (1) AT364908B (en)
BR (1) BR7802645A (en)
CA (1) CA1101616A (en)
FI (1) FI781351A (en)
SE (1) SE7805124L (en)

Also Published As

Publication number Publication date
AT364908B (en) 1981-11-25
CA1101616A (en) 1981-05-26
JPS53139802A (en) 1978-12-06
ATA316478A (en) 1981-04-15
SE7805124L (en) 1978-11-04
FI781351A (en) 1978-11-04

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