| 摘要 |
<p>Dyestuffs of the formula (I) (I) wherein F represents a ring system with at least 3 rings which are angularly condensed with one another, n is 1, 2 or 3, and R, R1 and R2 represent optionally substituted alkyl groups which can be interrupted by heteroatoms and also represent cycloalkyl, aralkyl, aryl or heterocyclic radicals, R and R1 can also represent hydrogen atoms. R1 and R2, together with the nitrogen atom, are able to form ring with 5 or 6 members, and R and R2 can combine to form a nitrogen-containingheterocycle.</p> |
