Patent ID: 6872245

Claim:
An azo pigment of the formula (I), in which D is the radical of a diazo component, R 1 and R 2 are identical or different and are hydrogen, C 1 -C 4 -alkyl radical, or a (C 6 -C 10 )-aryl radical which is unsubstituted or substituted by 1, 2 or 3 substituents selected from the group consisting of C 1 -C 4 -alkyl, C 1 -C 4 -alkoxy, F, Cl, Br, CF 3 , NO 2 , OH, CONH 2 , CONH(C 1 -C 4 -alkyl), CON(C 1 -C 4 -alkyl) 2 , COO(C 1 -C 4 -alkyl), SO 2 NH 2 , SO 2 NH(C 1 -C 4 -alkyl) and SO 2 N(C 1 -C 4 -alkyl) 2 , with the proviso that R 1 and R 2 are not simultaneously hydrogen: R 3 is hydrogen, C 1 -C 4 -alkyl, halo, trifluoromethyl, C 1 -C 4 -alkoxy, NO 2 , or CN, and n is 1, 2 or 3.