Dyes & Pigments: Totally Dissimilar Colorants




The two important colorant sources are the dyes and pigments. However, there lies some difference within the features, manner of use, benefits and therefore the sore points of every of them though very often the terms, pigment, dye, colorant, dyestuff, paint, colour are incorrectly used interchangeably.

Colorants come from organic and inorganic sources and dyes constitute an outsized percentage of the organic colorants while the pigments come largely from the inorganic sources. Naturally sourced pigments are obtained from animals, vegetables and minerals sources; however, majorly pigments comprise of inorganic oxides and salts like chromium and iron oxides that get diffused in powder form within the medium of application. The coloring properties of the diffusion are determined by the shape and size of the pigment particle. The dyes are divided into natural dyes and artificial wherein the natural sources of dyes are an equivalent as those of pigments while synthetic dyes are petroleum compound based.

Dyes and pigments both are equally important to humans for providing colour to all or any sort of items but the main difference between the 2 lies in their basic manner of imparting colour. just in case of dyes, colour is diffused at the molecular level as they're soluble within the organic solvent or water whereas in pigments the color is diffused as particles because they're insoluble in either sort of the liquid medium. Additional compounds are required for attaching the pigment particles to the substrate. for instance , pigments for paint require addition of polymer in paint for diffusion.

The vibrancy of colour of the dyes depends on its chromophore molecule's electronic properties. Colorants from dyes impart greater brilliance and show greater colour strength besides being simpler to process. Among the dyes, basic dyes are more known for his or her vibrancy and brightness and compatibility with anionic and artificial materials. All basic dyes manufacturers in India will confirm their suitability for coloring cationic, synthetic items like acrylics. However, dyes as colorants exhibit low durability, solvent and warmth stability and high levels of migration and acid red being one among them is not any different.

On the opposite hand, pigment colorants are more durable, solvent and warmth stable besides being migration and lightfast. But their cons include low colour strength and brilliance. thanks to the starkly different features of dyes and pigments many efforts were made to reinforce the properties of every colorant class. This led to the event of a replacement colorant class called because the Nanocolorants.

This class strives to mix the great processability and superior chromatic features of dyestuffs and better durability of organic pigments. Combining the benefits of both the colorants, Nanocolorants have emerged a far better alternative and has demonstrated superior features proving highly useful in several applications like preparing aqueous ink-jet inks, high-performance colour resistant polymer coloration, electro-photographic toners amongst others.

In any case, notwithstanding the features, dyes and pigments are indispensable elements for helping us to steer a color filled life.

What started as alittle venture by Mr. Pravinchandra B. Shah bloomed, blossomed and expanded at a rapid pace and emerged to become Vipul Organics Ltd. a public Ltd. in 1974 under his able leadership, vision and whole hearted dedication.





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