Color fastness to the combination of perspiration and light of the reactive dyeings

Twelve conventional reactive dyes were used to dye cotton and rayon fabrics,color fastness to sunlight,perspiration and their combination are determined,factors exerting influence on color fastness are analyzed,such as dye concentration,fabric type and perspiration composite.The results showed that the colorfastness to perspiration-light of these dyes was different from their light and perspiration colorfastness.The color fastness to sunlight and their combination will increase along with the increase in dye depth.The rayon fabric has superior light fastness and the combined fastness to those of cotton fabric.Artificial perspirations prepared according to different criteria also had influence on the perspiration-light colorfastness.It is said that ATTS perspiration has the biggest effect on the color fastness.