TREATMENT CELLULOSE CONTAINING MATERIALS WITH

Brand	Owner (click to sort)	Address	Description
LIGNOZYM	LIGNOZYM-GESELLSCHAFT ZUR HERSTELLUNG UND ZUM VERTRIEB VON ENZYMEN mbH	Arnold-Sommerfeld-Ring 28 5112 Baesweiler Germany	treatment of cellulose-containing materials with enzymes;LIGNO-ZYME;chemicals; namely, enzymes used in processing cellulose-containing materials;laboratory research in the field of biochemistry and the examination of the use possibilities of enzymes;
LIGNOZYM	WACKER-CHEMIE GMBH	HANNS-SEIDEL-PLATZ 4 MUNICH 81737 Germany	TREATMENT OF CELLULOSE-CONTAINING MATERIALS WITH ENZYMES;CHEMICALS, NAMELY, ENZYMES USED IN PROCESSING CELLULOSE-CONTAINING MATERIALS;
	Where the owner name is not linked, that owner no longer owns the brand

Technical Examples

The invention relates to a method for the modification of cellulose fiber with the object of increasing the strength properties of the pulp. Cellulose derivative, preferably in the form of CMC, is added in association with alkali cooking and/or delignification of cellulose chips in a suspension with treatment fluid, in an amount exceeding 2 kg, preferably at least 5-7 kg, per ton of cellulose fibers. The addition of cellulose derivative to the suspension takes place when the suspension has a concentration of calcium released from the cellulose exceeding 20 mg/l. The conditions required for an efficient deposit of cellulose derivative onto the cellulose fibers can be established in this way, where the natural content of calcium in the wood raw material has been released and contributes to a high ionic strength, while an advantageous high temperature is established. No additional process stages are required and operating costs can be kept low.