Liquid preparations of reactive dyestuffs

摘要

The present invention provides liquid, aqueous dyeing preparations of a reactive dyestuff which in form of the free acid corresponds to the formula <IMAGE> (I) <IMAGE> or to the formula <IMAGE> (II) <IMAGE> or to the formula <IMAGE> (III) <IMAGE> or to the formula <IMAGE> (IV) <IMAGE> or to the formula <IMAGE> (V) <IMAGE> or to the formula <IMAGE> (VI) <IMAGE> each containing 5 to 35% by weight of one of the aforesaid dyestuffs and furthermore 1 to 5% by weight of buFfer substances which are not capable of reacting chemically with the reactive group and thus reducing the dyestuff yield, and having a pH-value of from 3 to 7, said dyeing preparations being suitable for the dyeing and printing of fiber materials on the basis of wool, silk, polyamide and natural or regenerated cellulose, according to the process which is common for reactive dyestuffs.