Being one of the several varieties of water insoluble dyes, Vat dye has revolutionized the textile industry with its coloring capabilities. The dye is used to color the fiber only after changing it to leuco form in an alkaline solution of sodium hydrosulfite. These dyes are classified into four categories depending upon the degree and amount of temperature, salt, caustic soda, and hydrosulfite are required.

The four main categories of VAT Dye are IN Dyes, IW Dyes, IK Dyes, and IN Special Dyes in which the ingredients and compositions vary from high, medium to low. Vat dying holds several benefits; among them, long lastingness, wash fastness, and lightfastness are the eminent ones.

In the textile industry, dyeing fibers with Vat dyes involves multiple stages and processes, such as –

•To change the insoluble pigments of Vat dyes into sodium leuco-vat anions that are more soluble in nature

•The sodium leuco-vat anions are then dispersed into cellulosic fibers

•Wiping off reducing agents and excess alkali through wash mechanism

•Oxidation of soluble dye into an insoluble pigment form that are within the cellulosic fibers

•In the end, the leftover molecules are reoriented into more crystalline form through soaping

Looking at the above mentioned processes and multiple stages in the procedure, it seems to be complex and intricate; however, when one sees the final output, it is amazingly bright and shiny. The results mainly depend upon the procedures followed at different stages and out of all those stages, a reduction is the most important one whose success is based on factors like particle size of the dye, time, temperature, pH of dye, and the concentration of the reducing agent.

VAT dyes for paper possess unique benefits and due to their distinctive properties, they have found their utility and usefulness in a wide range of fibers like wool, rayon, cotton, and several different varieties that are used in textile manufacturing industries. Their coloring aspect and long lastingness are highly popular to bring the different shades of bright colors to the fibers.

VAT Dye has become the most important part of every form of dying requirements in the textile industry due to its excellent results and ease of availability. Some companies deal with such color changing pigment and dyes primarily for a variety of industries, variety of purposes. These companies manufacture chemicals for the textile industry and deliver all across the world. Other than this, they also offer products like reactive dyes for cotton, fast developing salts, pigment powder, Acid Dyes and other types of coloring agents.

For more information on the availability and supply of VAT dye for Yarn, Visit Cosmonaut Chemicals