Reactive dyestuffs containing chlorine or fluorine substituents and one or more pyridine radicals linked to the dyestuff at the 2-, 4- or 6-position

Abstract

A dyestuff of the formula ##STR1## where D is a chromophoric residue n is 1 or 2 Z is ##STR2## where R is H, C.sub.1-4 alkyl, C.sub.1-4 alkyl substituted by OH, OSO.sub.3 H, CN or SO.sub.3 H or is phenyl each hal independently represents a chlorine or fluorine atom occupying one of the remaining 2-, 4- and 6-positions of the pyridine nucleus X is F, Cl, CN or NO.sub.2 Y is H, F, Cl, CN or NO.sub.2. These dyestuffs reactively dye cellulose at low temperatures and are less prone to "acid bleeding" than some known reactive dyes.

Dependencies are inferred from the claim text.