| 摘要 |
The invention comprises dyes of the formula I <FORM:1061025/C4-C5/1> wherein A has the structure of the formula <FORM:1061025/C4-C5/2> B has the structure of the formula <FORM:1061025/C4-C5/3> each X is halogen, alkyl, alkoxy, hydroxyalkoxyalkyl or cyanoalkyl of up to 5 carbon atoms, hydroxyalkyl of 2 to 5 carbon atoms or a 2 : 3-benz radical, optionally further substituted by halogen, alkyl, alkoxy of 1 to 5 carbon atoms, halogenoalkyl or carbamoyl, R is alkyl, cyanoalkyl or hydroxyalkoxyalkyl of up to 5 carbon atoms or hydroxyalkyl of 2 to 5 carbon atoms, Z is hydrogen or methyl, a is 0, 1, 2 or 3, b, c, m and n are each 0 or 1 and b+c and m+n both equal 1. The dyes are made by heating together in a solvent compounds of the formula A-H or B-H with 4 : 5-dinitro-1 : 8-dihydroxy- or 4 : 8 - dinitro - 1 : 5 - dihydroxyanthraquinones or with crude dinitrated chrysazin or anthrarufin. The dyes form pigments by reaction in solution with metal carboxylates, e.g. of aluminium and zinc. In examples, 1 : 5 - dihydroxy - 8 - nitroanthraquinones having in the 4-position a phenylamino, 21-, 31-or 41-methylphenylamino, 41-methoxyphenylamino or a -naphthylamino radical also substituted at the amino nitrogen by methyl, ethyl, n-propyl, n-butyl, isopentyl or hydroxyethyl or having in the 4-position a 31-carboxy-41-hydroxy-, 31-hydroxy-41-carboxy- or 31-methyl - 41 - hydroxy - 51 - carboxy - phenylamino group are described, as also are dyestuffs made by reacting N-methyl-aniline or 5-aminosalicylic acid with crude dinitrated chrysazin or crude dinitrated anthrarufin. |
