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.)
D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
D21H17/03—Non-macromolecular organic compounds
D21H17/05—Non-macromolecular organic compounds containing elements other than carbon and hydrogen only
Verfahren zur Reinigung und Veredelung von handelsueblichen Zellstoffen aller Art fuer die Zwecke der Herstellung von Zelluloseestern und sonstigen chemisch charakterisierten Zelluloseverbindungen, Kunstfaeden u. dgl.