| 主权项 |
1. A Metal azo pigment comprising adducts of:
at least two metal azo compounds of the formula (T) which differ at least in the metal ion Me, or tautomeric forms thereof, in which
R1 and R3 are each independently OH, NH2 or NHR5,R3 and R4 are each independently ═O or ═NR5,R5 is hydrogen or alkyl, preferably C1-C4-alkyl, andMe is a di- or trivalent metal ion selected from the group of Ni2+, Zn2+, Cu2+, Al3+2/3, Fe2+, Fe3+2/3, Co2+ and Co3+2/3, with the proviso that:
an amount of metal ions from the group of Cu2+ and Ni2+ is 95 to 100 mol % and the amount of metal ions selected from the group of Zn2+, Al3+2/3, Fe2+, Fe3+2/3, Co2+ and Co3+2/3 is 0 to 5 mol %, based in each case on one mole of all compounds of the formula (I), andthe molar ratio of Cu2+ to Ni2+ metal ions in the sum total of the compounds of the formula (I) is 19:1 to 1:19, andat least one compound of the formula (II) in which R6 is hydrogen or alkyl. |
