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RAOUL PICTET OG F THARALDSEN A
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RAOUL PICTET OG F THARALDSEN A
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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
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Polysaccharides And Polysaccharide Derivatives
(AREA)
DEA47635D1925-05-201926-04-27Verfahren zur Herstellung von Cellulose aus Holz o. dgl. mittels einer waessrigen Loesung von Schwefeldioxyd unter Druck
ExpiredDE504667C
(de)
Verfahren zur Gewinnung von Alkalikarbonat aus Alkalisulfat auf nassem Wege durch Umsetzung der geloesten Sulfate mit frisch gefaelltem Erdalkalikarbonat, im besonderen Bariumkarbonat