申请人:Bayer Aktiengesellschaft
公开号:US04259237A1
公开(公告)日:1981-03-31
Azo dyestuffs of the formula ##STR1## wherein R.sub.1 represents hydrogen or in some cases alkyl, aralkyl, aryl or cycloalkyl, R.sub.2 represents hydrogen or in some cases alkyl, alkenyl or aralkyl, R.sub.3 represents, inter alia, hydrogen, alkyl, halogen or cyano and D represents the radical of a diazo component, are suitable for dyeing synthetic textile materials, in particular those made of polyethylene terephthalate. The scarlet-colored to blue dyeings obtained, in particular, with the preferred dyestuffs of the formula I, wherein D represents a o,o'-dicyanobenzene radical, are distinguished by good general fastness properties, good depth of color and a particularly clear color shade.
Azo染料的化学式为##STR1##其中R.sub.1代表氢或在某些情况下代表烷基、芳基烷基、芳基或环烷基,R.sub.2代表氢或在某些情况下代表烷基、烯烃基或芳基烷基,R.sub.3代表氢、烷基、卤素或氰基等,D代表重氮组分的基团,适用于染色合成纺织材料,特别是聚对苯二甲酸乙二醇酯制成的材料。特别是用化学式I中的首选染料(其中D代表o,o'-二氰基苯基)获得的深红色至蓝色染色具有良好的整体色牢度、良好的色深和特别清晰的色调。