| 摘要 |
- 8 - O.Z. 0050/38603 Dye mixtures contain an oilsoluble dye and a dye of the formula where D is phenyl which is unsubstituted or substituted by methyl or methoxy, R is hydrogen or methyl, R1 is hydrogen or C1-C4-alkyl and R2 is C3- or C4-alkyl. The mixtures according to the invention are preferably used for coloring and marking mineral oil products. |
