| 摘要 |
<p>Azo dyestuffs for hydrophobic synthetic fibres... G2A. Gave the formula: where R1 is hydrogen or halogen; R2 is an alkyl, phenyl, or amino group; these groups may have substituents; R3 is an alkyl group which is substituted by phenyl, alkoxy, phenoxy, benzoyloxy, phenoxycarbonyloxy, or alkoxycarbonyloxy groups, these groups possibly themselves having halogen, hydroxyl or cyan substituents. R4 is an alkyl group which may be substituted; R5 is an acyl group and R6 = H or an alkyl or alkoxy group which may be substituted. The molecule is free of sulphonic acid groups. The dyes colour synthetic fibres in shades having good fastness properties and are stable at 140 degrees C and to reducing conditions.</p> |
