The vat dyes are found amongst oldest natural coloring matters used for textiles. The name ‘Vat dyes’ derived from the large wooden vessel from which vat dyes were first applied. Vat dyes provide textile materials with the best color fastness of all the dyes in common use. The fiber most rapidly colored with vat dyes …
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Direct Dye: The dye which have strong affinity towards the fiber which can be applied directly on the fabric and which do not need any assistance, such type of dye is called direct dye.This dye posses a great affinity towards the cellulosic fibers. Any fiber except synthetic fiber and tri-acetate fiber can be dyed by …
Continue reading Direct Dye properties and chemical ClassificationAcid dyes are Na- salt of sulphonic acid. But there are a few containing carboxyl groups. Acid dyes are applied in acid medium. That’s why these dyes are called Acid Dye. Acid dye have a direct affinity towards protein fiber and the main class are used in Wool Dyeing. Polyamide fibers have an affinity for …
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