Kinetic study of the synthesis of some model bifunctional reactive dyes

Synthesis of Compounds Containing Fluorine, Vinylsulfone Groups and Transition Metal Complexes and their Applications to Textiles

“…Remazol dyes initially do not contain free vinylsulfone groups but instead contain non-reactive β-sulfatoethylsulfone groups, which β-eliminate during the dyeing process to form the vinylsulfone reactive group, which reacts with nucleophiles (water, alcohols, amines, and cellulose) by a nucleophilic addition reaction 3 . Bifunctional reactive dyes containing a vinylsulfonyl and a monochlorotriazine groups are widely used, and it is known that the two reactive groups have different relativities 4 . For vinylsulfonyl (VS) and monochlorotriazine groups, kinetic studies showed the rate of alkaline hydrolysis of the VS group was 3-4 times faster than that of the monochlorotriazine group under equivalent conditions.…”