Cationic pyridone azo dyestuffs, certain novel coupling components from which they are derived and processes for the manufacture of the dyestuffs and the coupling components
申请人:IMPERIAL CHEMICAL INDUSTRIES PLC
公开号:EP0023770A1
公开(公告)日:1981-02-11
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.
Disperse azo pyrimidine dyes of the formula:
wherein A is the residue of a diazo component from a number of defined classes;
R' and R4 are each independently hydrogen, optionally substituted alkyl, optionally substituted aralkyl or optionally substituted aryl, and
R is optionally substituted alkyl, optionally substituted aralkyl or optionally substituted aryl.
Provides valuable dyes for colouring aromatic polyesters.
分散型偶氮嘧啶染料,其式如下:其中 A 是若干定义类别中重氮组分的残基;R'和 R4 各自独立地是氢、任选取代的烷基、任选取代的芳基或任选取代的芳基,R 是任选取代的烷基、任选取代的芳基或任选取代的芳基。 提供用于芳香族聚酯着色的有价值染料。