Reactive Dyes is a water solvent compound that has been ruling supreme in the dyeing family,because the dyes symbolize various excellent features such as resistance to detergent wash-off,outstanding color fastness,and higher degree of resistivity to ultra-violet ray,sun-ray,heat,and so on.Because of utilitarian features,reactive dye has scouted up a wide application in textile industry and ideal for dyeing a variety of fibers such as Cellulose,Cotton,Wool,Silk,Polymide,Rayon and so forth.Experiment proves that the reactive is permanent,cost effective,that have brought about drastic changes in the real of dyes.
Dyes:Transforming The Visual Appearance From time immemorial,people have inclined to buck up the visual appearance of clothes or other objects to stand themselves or the objects out and make them better than those around.Dyes are a water solvent substance,used to render a color that does not fade or dull in the wash or in the sunlight.Such are the characteristics that have brought about radical changes in painting and coloring realm.As the dyes business went brisk on account of wide acceptance and high consumption,the need of different range of colors arose,thereafter remarkable evolution in dye preparing process has been marked.As a result,today,market is bristled with myriad varieties of synthetic dyes which have superseded conventional ones because,these dyes are lesser in cost,abundant in color,wide in application and brilliant in light,outstanding in quality,and longer in color life.
Synthetic dyes have been categorized according to the application and usages:Reactive Dyes are marked down as the best dyeing solution for the cotton,wool and silk fibers,because they use the coloring molecule like chromophore that directly reacts with fibers,besides forming covalent bond between yarn and dye that makes the reactive dye permanent,resulting in enhanced fastness properties.It is because of simplistic and facile method of dyeing any kind of cellulosic fibers,ascribing reactive to be predominant for several decades.As this dye is going stellar,so it is made available in different forms like powder,paste and liquid.Research evidences that reactive dyes embody some notable features such as perspiration&wash fastness as well as poised electron presence that reduces the impact of ultra-violet ray.
Reactive Dyes can be classified in varied categories:On the ground of reactive group and compound,On the ground of reactivity properties,On the ground of dyeing temperature.
The usages of reactive dyes differ in dyeing procedure,as the dye interact and react with fibers in four stages as below:Exhaustion,Absorption,Fixation,Wash-off stage.
Comprehensive research claim that reactive dyes symbolize minimalist reactivity degree,as they necessitate high temperature and consume more time.In addition,they can not be removed from the textile and cellulose materials owing to covalent bond between polymer and dye,moreover the effect of color does not fade away or dull in detergent wash,sun ray and heat.It is proven that reactive is the dye that not only holds fast to color but also improves the appearance of the textile or polymer.Eventually,it is apt to say that it offers considerable benefit over other kinds of Ultramarine Blue.In order to keep its significance alive,research and development is carried out in order to evolve new reactive group that caters to dyeing need of ever growing synthetic fiber industry,besides enhancing the cost and color fastness.
