| 摘要 |
7-Aminocoumarin-2-imide dyes in Examples 1, 2, 33 and 35 are prepared, the dyes have the formulae <FORM:1121947/C4-C5/1> <FORM:1121947/C4-C5/2> <FORM:1121947/C4-C5/3> <FORM:1121947/C4-C5/4>ALSO:Synthetic materials e.g. polyesters, polyamides, cellulose acetates and polyacrylonitrile are dyed in fluorescent yellow shades with aqueous dispersions of dyes of formula <FORM:1121947/D1-D2/1> in which X is a divalent radical which makes the nitrogen containing ring A into a 5 or 6-membered ring of aromatic character especially benzazole and benzimidazole rings R1 and R2 are hydrogen, an optionally substituted alkyl group or a cycloalkyl group or R1 and R2 together with the nitrogen atom and optionally a further hetero atom may form a hetero ring. In particular R1 and R2 are C1-6 alkyl groups. Further values for X give rise to pyrazole, imidazole, thiazole, oxazole, 1, 2, 4-triazole, 1, 3, 4-oxidiazole, 1, 3, 4-thiadiazole, pyridine, quinoline and pyrimidine rings. |
