abstract |
Anionic Dyes and Hair Dye Compositions containing them The present invention refers to dyestuffs of the formula (I) and its tautomeric forms, wherein D is a group of the formula D1, D2, D3, D4 or D5 wherein T, X, Y, Z, A1 to A4, G, R1, R5, R7 to R11, m, n, o, p, q, r, s and t are defined as given in claim 1, a process for their manufacture and hair dye compositions containing them. |