End Use PVC, Packaging Type FIBER BOX Optical Brightener For LD, 25, 50 Kg, Form POWDER

Optical brighteners for ld whitening agents fwa is added to many substrates to reduce yellowing, Improve whiteness and enhance the brightness pertaining to the item optical whiteners function by absorbing ultraviolet radiation and re, Emitting blue light. The emitted blue light will reduce the yellow colour of the substrate and impart a pleasing whiter, Than, White appearance. Optical brighteners give more intensity to some colours as well. A range of optical brightening agent find the suitable application on different substrates like cellulose, Nylon, Silk, Wool, Paper, Detergents, Soaps, Plastics, Coatings and, Printing inks polymers. There are 3 different types of oba / fwa derived from the sulfonic group. Disulfonic / divalentit constitutes of two sulfonic acid groups and is good for hydrophobic fiber nylon, Silk & wool application in acidic ph. Tetrasulfonic / tetravalentit constitutes of four sulfonic groups and is having good solubility and perfectly suited for cellulosic fiber and paper application at neutral or alkaline ph. Hexasulfonic / hexavalentit constitutes of six sulfonic groups and has excellent solubility for surface coating application like photographic paper etc