| 摘要 |
Azo-dyestuff of the formula <IMAGE> in which D represents nitrophenylene, <IMAGE> DINITRO-PHENYLENE, NITRO-CYANO-PHENYLENE, NITRO-CHLORO-PHENYLENE, NITRO-BROMO-PHENYLENE, TRICHLORO-PHENYLENE, NITRO-DICHLORO-PHENYLENE, DINITRO-CHLORO-PHENYLENE, DINITRO-CYANO-PHENYLENE, NITRO-BROMO-CYANO-PHENYLENE, DINITRO-BROMO-PHENYLENE, PHENYLAZO-PHENYLENE, <IMAGE> <IMAGE> <IMAGE> +tr <IMAGE> R represents hydrogen, chlorine, lower alkyl, lower alkoxy, -O-CH2-CN, -NH-CO-lower alkyl, -NH-COO lower alkyl or <IMAGE> n stands for the integer 1 or 2, X represents cyano, -CO-NH2 or -COO-lower alkyl, R1 represents hydrogen, lower alkyl, lower alkylene-OH, lower alkylene-CN, lower alkylene-OCO-lower alkyl or lower alkenyl, and R2 represents lower alkyl, lower alkylene-O-CO-lower alkyl or lower alkylene-COO-lower alkyl, said dyestuffs being suitable for the dyeing or printing of synthetic fibrous materials, such as fibers of cellulose-di-, -21/2- or -triacetat, polyamides, polyurethanes, polyolefines, polycarbonates and particularly of linear polyesters, the dyeings or prints obtained being distinguished by a very good build up, tinctorial strength and a series of very good fastness properties.
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