| 摘要 |
<p>The reaction products of primary or secondary amines or of polyamines with cyanamide, dicyanamide, guanidine or one of their derivatives or of ammonia with cyanamide or dicyanamide (A) are brought in presence of N-methylo compounds of ureas, melamines, triazones, urones, carbamates or acid amides (B). Thus, compounds are obtained for improving the wetting resistance during colouring with direct dyes of textiles composed of cellulose fibers or containing such fibers. These compounds are appropriate for fixing a reactive dye not bound in colouring with this type of dye. </p> |
