抄録
Benzyl alcohol (BA) was used as a cosolvent in the solvent-assisted dyeing of wool with acid dyes having surface activity different from that of BA. The equilibrium exhaustion of Orange II having surface activity lower than that of BA decreased with increasing BA concentration in the dye-bath, although the rate of dyeing at the initial stage was accelerated by BA. On the other hand, the adsorption of Butyl Orange having surface activity higher than that of BA was increased by the addition of BA in all the stages of dyeing. These results correspond approximately to the adsorption behavior of BA/acid dye mixture at an air/water interface, showing that these phenomena were caused mainly by the difference in the dye concentration at a wool/dye-bath interface similar to that at the air/water interface.
