ALKALI SOLUBLE FINISHES FOR CELLULOSE

Brand	Owner	Address	Description
CELFON	GENERAL DYESTUFF CORPORATION	230 FIFTH AVE. NEW YORK NY	ALKALI SOLUBLE FINISHES FOR CELLULOSE MATERIALS INCLUDING COTTON AND RAYON-NAMELY, ALKALI SOLUBLE CELLULOSE ETHERS, ESTERS, AND ZINCATES;
	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.