Classification of dyes according to the methods of application, general theory of dyeing, various method of dyeing- Batch, Semi continuous, Continuous dyeing. Dyeing of cellulosic fibres with direct dyes Reactive Dyes.
Dyeing of cellulosic fibres with Vat dyes-vatting, dyeing, oxidation, Solublised vat dyes. Sulphur dye dissolution ,application ,faults and remedies .Azoic-diazotization, naphtholation, coupling, Oxidation colour-aniline black, mineral colours-mineral khaki.
Dyeing of protein fibres – silk and wool with different types of acid dyes –its advantages and limitations, Metal Complex dyes- 1:1, 1:2, metal complex, Chrome dyes-pre, post & simultaneous mordanting, Basic Dyes.
Dyeing of synthetic fibres: polyester-carrier ,HTHP& thermosol method, Acrylic dyeing with basic dye, dyeing of Nylon and their blends .Problems associated with dyeing, Common fault and their remedies.
Mechanism of dyeing, role of fibre structure in dyeing .dyeing equilibria, adsorption isotherms, chemical potential – activity of dyes in solution and fibre, heat of dyeing, entropy of dyeing. Kinetics of dyeing –diffusion coefficient, diffusion in steady state and non steady state, rate of dyeing.