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.)
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
D21C9/08—Removal of fats, resins, pitch or waxes; Chemical or physical purification, i.e. refining, of crude cellulose by removing non-cellulosic contaminants, optionally combined with bleaching
Verfahren zur Herstellung eines aus Chlormagnesiumlauge und Zellstoff aus Papier bestehenden Halbstoffes fuer die Erzeugung von Faserstoff-Sorelzementmischungen
Verfahren zur Erzeugung eines dem braunen Holzschliff ähnlichen, zur Papierfabrikation geeigneten Rotbuchenholzfaserstoffes, dessen spezifisches Gewicht jenes des braunen Nadelholzschliffes nicht übertrifft.