| 摘要 |
1323189 Basic monoazo dyes CIBA-GEIGY AG 26 May 1971 [29 May 1970] 17287/71 Heading C4P Basic monoazo dyes, free of acidic watersolubilizing groups, of formula wherein ring A may be substituted, V is H, alkyl or alkoxy, W is H, halogen, alkyl, CF 3 , alkoxy, aryloxy, arylmercapto or acylamino, Y is an optionally substituted alkyl radical, n is 1, 2, 3 or 4, X is an anion and B forms a 6- membered ring are prepared by azo coupling or quaternation reactions. They are used to colour synthetic, in particular polyacrylonitrile, fibres in blue shades. |
