Mechanism of Reaction of Proteins with Reactive Dyes IV—Reactivity of Wool with Chlorotriazine Dyes*

Chlorinated wool was dyed with a monochlorotriazine reactive dye under infinite dyebath conditions. The kinetics of dyeing conformed to a composite equation derived from the Danckwerts and Hill equations for diffusion into an infinite cylinder with surface saturation. The rate constants for the reaction between the dye and the fibre obtained from this equation agreed well with theoretical constants calculated from the reactivities of model compounds and data obtained from amino-acid analysis. The relative contributions of the individual types of reactive site to the total reactivity of wool are discussed.