3,6 - dioxo - 1,2 - dihydropyridines - 7h - pyrazolo (3,4 - b) of pyridine dyes

摘要

Dyes of the general formula IMAGE where D, X, Y, Z, R1, R2, m and n each have defined meanings, are very highly suitable for dying and printing hydroxyl- or amido-containing and also synthetic fibres and can be used as pigments.