engleski

ULTRA-DEEP BLACK CATIONIZED COTTON BY METAL-COMPLEX DYEING

Cationisation during the mercerization with an epihalohydrin results in novel cotton cellulose that gives a new dimension to cotton pre-treatment and finishing. The modified cotton retains all the beneficial properties of mercerised cotton with a change of the surface charge that ensures higher adsorption of water, anionic surfactants, and anionic dyestuff. Therefore, in this paper cotton fabric was cationized during mercerization with an epihalohydrin 3-chloro-2-hydroxypropyl trimethyl-ammonium chloride (CHPTAC) and with cationic reactive polyammonium compounds Rewin OS (CHT-Bezema) and Rewin DWR (CHT-Bezema). The electrokinetics and dyeability with acid metal-complex dyestuff was researched. It was found that it is possible to achieve ultra-deep black cotton by application of only 1 % acid metal-complex dyestuff in neutral medium, with very good fastness.

cationization during mercerization; acid metal-complex dyeing; ultra-deep black

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