| 摘要 |
1293270 Disperse monoazo dyes FARBWERKE HOECHST AG 16 Nov 1970 [17 Nov 1969] 54406/70 Heading C4P The invention comprises water - insoluble monoazo dyes of formula wherein D is the radical of a diazo component of the benzene series which may be substituted by a halogen atom and/or an alkyl, alkoxy, perfluoroalkyl, alkylsulphonyl, arylsulphonyl, alkoxycarbonyl, carbonamido, CN or NO 2 group, Y is a H or halogen atom or an alkyl, alkoxy or acylamino group, Z is a H or halogen atom or an alkyl or alkoxy group, R is H or an alkyl group which may be substituted and A is the 2-nitroisobutyl group. The dyes are prepared by azo coupling and are used to dye and print synthetic polyamide, polyester and cellulose acetate materials in yellow, orange red, blue and brown shades.
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