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Dyeing | Textile Study Center


Introduction to Sulfur Dyes Part 1

Introduction to Sulfur Dyes Sulfur dyes are complex heterocyclic molecules or mixtures formed by melting or boiling organic compounds containing amino or nitro groups with Na-polysulphide and Sulfur. Sulfur dyes are so called as they all contain Sulfur linkage within their molecules.             Sulfur dyes are highly coloured, water insoluble compounds and have to be […]

Eco-Friendly Textile Dyeing Process

Disperse Dye for Polyester | Why called disperse dye | Application and mechanism of disperse dyes | Features of of disperse dyes

Part 1 : Disperse Dye for Polyester | Why called disperse dye | Application and mechanism  Part 3 : Auxilaries Of Disperse Dye   Why called disperse dye Disperse dye are the smallest dye of all dyes. They are insoluble in water. When they are applied to the dye bath, they form dispersion. They are free from ionized group. So they have low […]

Eco-Friendly Textile Dyeing Process

Reactive dye || Reactive dye features || Reactive dye classification

REACTIVE DYE Reactive dye is only dye that reacts with the textile fibre & makes covalent bond with fibre.Under the suitable condition it reacts with –OH or –NH2 of the fibre & forms covalent dye substrate linkage. DYE-SO2-CH2-OSO3Na + HO-Cell ———- D-SO2-CH2-CH2-O-Cell  + NaHSO3 FEATURES of REACTIVE DYE       1. Water soluble.     […]

Eco-Friendly Textile Dyeing Process