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.)
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Zellsloff Fabrik Waldhof AG
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Zellsloff Fabrik Waldhof AG
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Publication date
Application filed by Zellsloff Fabrik Waldhof AGfiledCriticalZellsloff Fabrik Waldhof AG
Application grantedgrantedCritical
Publication of FR875279ApublicationCriticalpatent/FR875279A/fr
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
D21C1/02—Pretreatment of the finely-divided materials before digesting with water or steam
FR875279D1940-09-141941-09-12Procédé de traitement préalable du bois et des substances analogues à désagréger par des agents alcalins
ExpiredFR875279A
(fr)