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.)
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.)
WESTFALISCHE ZELLSTOFF A G ALP
Zellwolle und Kunstseide Ring GmbH
Original Assignee
WESTFALISCHE ZELLSTOFF A G ALP
Zellwolle und Kunstseide Ring GmbH
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Filing date
Publication date
Application filed by WESTFALISCHE ZELLSTOFF A G ALP, Zellwolle und Kunstseide Ring GmbHfiledCriticalWESTFALISCHE ZELLSTOFF A G ALP
Application grantedgrantedCritical
Publication of FR899339ApublicationCriticalpatent/FR899339A/fr
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
D21C3/22—Other features of pulping processes
D21C3/26—Multistage processes
D21C3/266—Multistage processes the same pulping agent being used in all stages
FR899339D1942-10-301943-10-30Procédé de préparation d'une cellulose d'une grande pureté
ExpiredFR899339A
(fr)