| abstract |
The present invention refers to dyestuffs of the formula I n n n wherein n each of R 1 , R 2 , R 3 , R 4 and R 5 , independently, is H or an optionally substituted alkyl group; n each of X 1 and X 2 , independently, is a labile atom or group; n each of x and y, independently, is 0 or 1 and at least one of x and y is 1; n each of a and b is 2 to 5 and when each of x and y is 1, a>b; and n z is 0, 1, 2, 3 or 4; and n wherein the variables D 1 and D 2 are defined as given in claim 1, processes for their preparation and their use for dyeing and printing hydroxy- and/or carboxamido-containing fiber materials. |