What is Pigments? Pigments are such colorants which composed of particles that are insoluble in the application medium. They have no substantivity for the material since the particles are too large to penetrate into the substrate. They are generally present on the surface of the substrate. That’s why pigments are made fixed with an adhesive to the surface so that they are not … [Read more...] about What is Pigments
dyes and pigments
Classification of Dyes
Before discussing the classification of dyes lets have some idea of dyes and what can be the basic characteristics of dyes. What is Dyes A dye is such type of colorant substance which is capable of imparting it’s color to a given substance, by being soluble in the application medium (usually water) at some points during the coloration process. Direct Dyes In the most … [Read more...] about Classification of Dyes