| 摘要 |
<p>A compsn. for dyeing human air contains, in soln. >=1 compound of the formula: where n = 2-6 and Z is H or -NRR", linked in positions 4, 5 or 8, which R is H or lower (hydroxy)alkyl and R" is H, lower alkyl or -(CH2)n-NH2. The dyes have great affinity for human hair and the dyeings resist shampooing and the effect of the light. The dyes are soluble in water over a pH range of 4-10.</p> |
