| abstract |
The present invention relates to a compound of formula (I) wherein R1 is a radical of formula (II) R2 is -NH2 or a radical of formula (II), R3 and R4 are each independently of the other hydrogen, hydroxy, -NH2 or a radical of formula (II), R5 is hydrogen, halogen or -X-(CH2)n-Y, wherein X is a direct bond, -O- or -S-, Y is -OH or -OSO3H and n is a number from 0 to 6, with the proviso that at least one of the radicals R3, R4 and R5 is not hydrogen, to a process for the preparation thereof and to the use thereof in a method of producing mass-coloured plastics or polymeric colour particles. |