The Dyeing of Acetate Rayon with Disperse Dyes I‐Aqueous Solubility and the Influence of Dispersing Agents II‐The Relation between Aqueous Solubility and Dyeing Properties

Abstract

Aqueous solubilities have been determined at 25° and 80°c. for a range of purified disperse dyes. The solubilising effect of a number of dispersing agents has been examined. It is shown that aqueouS solubility has some bearing on the rate of dyeing of disperse dyes and largely governs their levelling power. Addition of a dispersing agent to an acetate rayon dyebath reduces the percentage exhaustion to an extent which is proportional to the degree of solubilisation.