Color Fading Behavior of C.I. Disperse Blue 3 by NO2 Gas.

Abstract

Color fading behavior of acetate cloth dyed with C. I. Disperse Blue 3 by exposing to NO2, gas was discussed. JIS-L-0855 standard cloth and acetate cloth dyed with C. I. Disperse Blue 3 were exposed to commercial NO2 gas at different concentration and humidity, and to ambient air. Exposure test by JIS-L-0855 method was also conducted. Effect of the concentration of NO2 gas and the humidity to the color fading was discussed quantitatively as the relation between color difference ΔE and NO2 dose (NO2 concentration × exposing time).As for the concentration of the dye, fading was larger in light color. Color fading behaviors were different in each exposing condition, especially the JIS method, in which high concentration of NO2, is used, and ambient air treatment showed a remarkably different behaviors. To improve the JIS method, using commercial NO2 gas and exposing at high humidity were suggested.