Dyes, Pigment Dye & Intermediates, Acid Dyes, Azo Dyes, Sulfur Black Dye, Dye Levelling Agent, Reactive Dye, Leather Dye, Yarn Dyeing, Blue Dye, Disperse Dyes, Hair Dyes, Garment Dyeing, Acetate Dye, Fast Color, Textile Dyeing etc.

Dye refers to a substance that is used to impart color to leather, paper, textiles and other materials. This is to make sure that coloring is not readily altered by light, heat, washing and other factors to which the material is exposed. Furthermore, a dye intermediate is the main raw material that is used to manufacture dyestuff. The manufacturing of dyes can be traced to petroleum based products. Natural gas as well as naptha is used to produce toluene and benzene which in turn are used to manufacture nitro-aromatics. 

Pigment Dye refers to a colored material that is almost insoluble in water. Dyes are known to be typically soluble at some or the other stage of their use. These dyes are known to be organic compounds whereas pigments are known to be inorganic compounds. Acid Dyes are known to be anionic and soluble in water. These are known to possess acidic groups COOH and SO3H which are in silk, wool, nylon and have ionic bonds. The common examples of acid dyes include acidophilic structures such as dyes – Indian ink, nigrosoine as well as congo red. 

Azo Dyes are known to be organic compounds with a typical functional group. These dyes are known to be used to treat textiles as well as leather products. These are azo pigments which are insoluble in other solvents as well as in water. Sulfur Black Dye is known to contain di-sulphid linkage in their chemical structure. Also, it should be well noted that electrolyte can be added to the dye to enhance the exhaustion of dyes. These have average fastness properties. These are best suitable to produce brown and black shade on the textile material. 

Dye Levelling Agent refer to chemical agents that get working with the molecules of the dye. These assist in fixing of the dye particles in a uniform manner which in turn allow in obtaining uniform shade. These agents are also termed as retarders or retarding agents. Reactive Dye are known to react rapidly with an inert fiber like cotton. These have co-valent bonds with good color fastness. Few of the examples of reactive dyes include reactive brown-2, reactive blue 74, reactive orange 5, Procion Yellow H-E3G and others. 

Yarn Dyeing refers to the process of dyeing yarns before they re woven or knitted into fabrics. It is the application of dyes or pigments on fibres, fabrics and yarns with the objective of giving the best of color and the desired fastness. 

Blue Dye is known to be derived from coal tar, although it is also made from an oil base. Blue No.2 or indigotine refers to a synthetic version of the plant based indigo that has a long history as a dye used in textiles. Disperse Dyes fall in the category of synthetic dyes which are intended for polyester fibers. These are a kind of polar molecules which contain anthraquinone or azo groups. It is well known that most of the disperse dyes are anthraquinone or azo dyes. 

Thus, we have been successful in getting a brief overview of dyes and its intermediate products as well as different types of dyes