The dyestuffs are prepared by diazotation of an amine, reaction with a pyridone coupling component carrying in the 3-position a 5- or 6-membered heterocyclic ring containing an o-nitrogen and an o-sulphur or second nitrogen atom and quaternisation. A further carbocyclic or heterocyclic ring may be fused to the first. The novel pyridone coupling components carry a 3-benzimidazole or a 3-benzthiazole substituent and are made by reacting a 3-cyano pyridone with an o-phenylene diamine or o-aminothiophenol in the presence of anhydrous aluminium trichloride.
The dyestuffs colour acrylic materials bright yellow shades of high tinctorial strength. They have good fastness properties and compatibility values.
染料的制备方法是:重氮化胺,与在 3 位上含有一个 5 或 6 元杂环的
吡啶酮偶联组分反应,该杂环含有一个邻氮和一个邻
硫或第二个氮原子,然后进行季
铵化反应。另一个碳环或杂环可与第一个碳环或杂环融合。新型
吡啶酮偶联组分带有 3-
苯并咪唑或 3-
苯并噻唑取代基,是通过 3-
氰基吡啶酮与邻苯基二胺或邻
氨基
苯硫酚在无
水三氯化铝存在下反应制成的。
这些
染料能使
丙烯酸材料染上明亮的黄色,具有很高的
锡宽容度。它们具有良好的牢度特性和相容性。