Direct dyes are anionic dyes having substantivity for all types of cellulose fibres such as cotton, viscose, rayon, cuprmmonium rayon etc. Direct dye have strong affinity towards the fibre which can be applied directly on the fibre and which do not need any assistance. These dyes have an affinity for cellulose and therefore they are also substantive dyes.
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Direct dye
Direct dyes are anionic dyes having substantivity for all types of cellulose fibres such as cotton, viscose, rayon, cuprmmonium rayon etc. Direct dye have strong affinity towards the fibre which can be applied directly on the fibre and which do not need any assistance. These dyes have an affinity for cellulose and therefore they are also substantive dyes.