Patent ID: 7077898

Claim:
A black pigment composition comprising (a) carbon black, and (b) a compound of the formula (MO 3 S) m —Q (CH 2 ) k —X] n (I), wherein Q is a pigment or pigment intermediate radical selected from the group consisting of anthraquinone, perinone, perylene, diketopyrrolopyrrole, thioindigo, iminoisoindoline, iminoisoindolinone, quinacridone, 6,13-dihydroquinacridone, flavanthrone, dioxazine, indanthrone, anthrapyrimidine and quinophthalone, X is a cyclohetero aliphatic group or a hetero aromatic group with at least one 5 or 6 atom ring, M is hydrogen, a metal cation or nitrogen cation, k is 0 or 1, and m and n are each independently of the other from 0 to 4, wherein m and n are not simultaneously zero.