New anthraquinone dyes, free of water-solubilizing groups such as --SO.sub.3 H and --CO.sub.2 H comprise anthraquinone substituted with one or more identical or different groups of the formula --NHSO.sub.2 R, wherein R is a substituted or unsubstituted linear, branched, cyclic or polycyclic alkyl group having up to 20 carbon atoms, and wherein the remaining nuclear aromatic carbon atoms of the anthraquinone may be substituted with substituents selected from the group: alkyl; the halogens F, Cl, and Br; cyano; nitro; aminosulfonyl; arylsulfonylamino; and --NHCOQ; wherein Q is hydrogen, an alkyl, an aryl, or a heterocyclic group. These dyes have improved solubility, lowered melting point, and possess outstanding resistance to light-induced fading.
新的
蒽醌染料不含有
水溶性基团,例如--SO.sub.3 H和--CO.sub.2 H,它们包括被一种或多种相同或不同的--NHSO.sub.2 R基团取代的
蒽醌,其中R是一个取代或未取代的线性、支链、环状或多环烷基,具有多达20个碳原子,而
蒽醌的其余核芳香碳原子可以被选择自群组的取代基所取代:烷基;卤素F、Cl和Br;
氰基;硝基;
氨基磺酰基;芳基磺酰胺基;和--NHCOQ;其中Q是氢、烷基、芳基或杂环基。这些
染料具有改善的溶解度、降低的熔点和出色的耐光退色性能。