Kanmovhem Dyestuffs & Chemicals has a wide range of vat dyes including vat black, blue, blue RSN, green, brown, grey, golden yellow, sol orange and etc.
Application of Vat Dyes
VAT dyes are insoluble in water and generally applied to cellulosic fiber. Before applying it to cotton/rayon fiber, it needs to be reduced to leuco form in sodium hydrosulfite alkaline solution. In the process, air oxidation firmly fixes vat dyes strongly on fiber that result in superior light and wash-fastness.