Dyeing of PES/cotton fabrics with disperse dyes without waste water

Abstract

Dyeing PES/cotton blend fabrics requires different groups of dyes and dyeing procedures for both components. That is why there have been many attempts to reach simpler and more economical procedures by applying unique systems. Among other things, the use of reductive dyes is known, which can be applied reduced on cotton and at the same time as disperse dyes on PES fiber. However, two stages of processing are required. Another example is dyeing with disperse dyes, in which the cotton component also receives them due to the use of polyglycol. Our own works deal with single-phase dyeing and anti-creasing treatment under the following assumptions: - Dyeing of cotton and thermosol dyeing of the PES component take place simultaneously with the same disperse dyes. - The anti-creasing finishing and the binding of the dyes take place at the same time (one-phase) under the same conditions. - The complete bonding of the dyes makes it possible to omit subsequent washing and to achieve optimal utilization of the dyes. This presentation discusses the possibilities and limits of this mode of operation, where various influences have been shown that determine the system and at the same time enable the understanding of intermolecular interactions. This refers to the choice of reaction components and dyes, the dependence of the coloring tone on the fabric, the achievable depth of coloring and durability as a function of additives for binding dyes and chemical bonds, reaction conditions and possibilities of catalysis.