Dyeing or printing of manufactured natural polymer and synthetic hydrophobic fiber materials

The present invention relates to a process for dyeing or printing manufactured natural polymer or synthetic hydrophobic fiber materials, characterized in that it comprises using dyes of the formula (I), where R 1 is hydrogen, hydroxyl or a radical —NHCO—R 6 , where R 6 is C 1 -C 6 alkyl or unsubstituted or C 1 -C 4 alkyl- or halogen-substituted phenyl, R 2 is hydrogen, hydroxyl or a radical W—R 7 , where W is —NHCO— or —S— and R 7 is C 1 C 6 alkyl or unsubstituted or C 1 -C 4 alkyl- or halogen-substituted phenyl, R 3 is hydrogen, R 4 is hydrogen or hydroxyl, R 5 is hydrogen, halogen, methoxy, phenoxy or phenylthio, or R 3 and R 4 combine to form the radical of the formula (II), where the rings A and B may independently bear further substituents, to the use of these dyes for trichromatic dyeing of manufactured natural polymer or synthetic hydrophobic fiber materials and mass dyeing of plastics materials and to producing solid on-tone combinations of plastics material and manufactured natural polymer or synthetic fiber material.