| 摘要 |
<p>1492414 Reactive monoazo dyestuffs IMPERIAL CHEMICAL INDUSTRIES Ltd 30 April 1976 [2 July 1975] 27852/75 Heading C4P Novel reactive monoazo dyestuffs having the formula (where A is 1,5-disulpho-, 1,6-disulpho- or 1,5,7- trisulpho-naph-2-yl; one of X and Y is SO 3 H and the other is H; Q is a dihalogeno-5-cyanopyrimidinyl group in which halogen is Cl, Br, or F) are prepared by diazotization and coupling or by reacting the corresponding dyes in which Q is H with a trihalogeno-5-cyano-pyrimidine. The dyes are used for colouring wool, silk, polyamides and natural or regenerated cellulose in red shades.</p> |
