| 摘要 |
Blue-red-violet, water-insol. monazo dyes for dyeing/printing synthetic hydrophobic materials, e.g. linear polyesters, acetyl cellulose, polyamides and polycarbonates, have the formula:- (where X1 is nitro, cyano, alkylsulphonyl or dialkylamino sulphonyl; X2 is nitro, cyano or alkyl-sulphonyl; X3 is cyano; Y is H, alkyl, alkoxy or acylamino; Z is H, alkyl or alkoxy; R1 is 3-10C, pref. 3 or 4C alkenyl, and when X2 is alkylsulphonyl, R1 may also be H; R2 is opt. substd. alkyl). |
