Explanation

colorant that can dissolve in water, oil or resin at a certain temperature is called dye or dyestuffc. Dye or dyestuffc can be divided into natural dye or dyestuffc and synthetic dye or dyestuffc according to their sources. Natural dye or dyestuffc mainly include some plant dye or dyestuffc and animal dye or dyestuffc. According to the application method, dye or dyestuffc can be divided into solvent dye or dyestuffc and disperse dye or dyestuffc. Corresponds to the non textile field and the textile field respectively. In the processing of dye or dyestuffc. Since it is soluble in polymer melt, there is no dispersion problem. When the dye or dyestuffc is completely dissolved, its maximum coloring strength is reached. The complete dissolution and uniform distribution of molten dye or dyestuffc in polymer melt are very important to avoid defects in the final product. Dye or dyestuffc not only have a large number, but also each type of dye or dyestuffc has different properties and use methods. The index to measure the dyeing quality of a dye or dyestuffc is the color fastness. color fastness includes fastness to sunlight, soaping, rubbing, sweating, and chlorine washing. The application of dye or dyestuffc is not limited to textile dyeing and printing, but also applied to paint, plastics, leather, photoelectric communication, food and many other fields. In our country, the naming of dye or dyestuffc is unified using the three paragraph naming method. Its name includes three parts, namely the crown name, color name, and endnote.

Classification