| 摘要 |
<p>Dyestuffs of formula IN WHICH R signifies a substituted or unsubstituted hydrocarbon radical, R1 signifies a substituted or unsubstituted phenylene or naphthylene radical, R2 signifies a substituted or unsubstituted alkyl or aryl radical, R3 signifies a hydrogen atom, a substituted or unsubstituted alkyl radical of one to six carbon atoms or a halogen atom, and RING A may be further substituted, USEFUL FOR DYEING AND PRINTING POLYAMIDE, CELLULOSIC AND BASIC DYEABLE POLYPROPYLENE FIBRES, LEATHER AND PAPER.</p> |
