Dyes, a process for their preparation and their use

A dye of the formula (1)

• in which
• Me is Cu or Ni,
• R1, is hydrogen or substituted or unsubstituted C1-C4alkyl or R1, is as defined for A,
• X1 is halogen, hydroxyl, C1-C4alkoxy, substituted or unsubstituted C1-C4alkylthio or amino or is an N-heterocyclic radical which may contain further heteroatoms,
• u is the number 1, 2, 3 or 4,
• q is the number 0 or 1,
• the benzene rings I, II or III are unsubstituted or further substituted and
• A is a radical of the formula (2a), (2b) or (3)
• in which
• B1 and B2 independently of one another are an aliphatic bridge member,
• D1 and D2 independently of one another are the radical of a diazo component of the benzene or naphthalene series,
• R2 is hydrogen or substituted or unsubstituted C1-C4alkyl,
• R3 and R6 independently of one another are hydrogen, cyano, carbamoyl or sulfomethyl,
• R4 is hydrogen, C1-C4alkyl or amino,
• R5 is amino or N-mono- or N,N- di- C1-C4alkylamino which are unsubstituted or substituted in the alkyl part and
• R7 is hydrogen or C1-C4alkyl.