| 摘要 |
<p>Azo compounds having the formula <IMAGE> in which R1 is cyano, aryl, an acyl radical or a carbamoyl radical, R2 is hydrogen, alkyl, alkoxy, aralkyl or aryl, R3 is alkyl, halogen, thiocyanato, arylazo or one of the substituents which R1 can represent, and A is an aniline, tetrahydroquinoline, benzomorpholine or alpha -naphthylamine disperse azo dye coupling component. The azo compounds produce red to blue shades on polyamide, polyester and cellulose acetate fibers and exhibit improved fastness and dyeability properties on synthetic polyamide fibers.</p> |
