申请人:Bayer Aktiengesellschaft
公开号:US04757137A1
公开(公告)日:1988-07-12
Azo dyestuffs of the formula ##STR1## wherein R.sub.1 denotes acyl, R.sub.2 denotes hydrogen, fluorine, chlorine or trifluoromethyl, R.sub.3 denotes hydrogen, optionally substituted C.sub.1 -C.sub.4 -alkyl, cyclohexyl or optionally substituted phenyl and R.sub.4 denotes hydrogen or C.sub.1 -C.sub.4 -alkyl group are suitable for dyeing natural and synthetic fibre materials, for example for dyeing wool or polyamide fibres, in level read to violet shades with very good fastnesses to light, wet processing and perspiration, the color yield being good.
Azo染料的化学式为##STR1##,其中R.sub.1代表酰基,R.sub.2代表氢,氟,氯或三氟甲基,R.sub.3代表氢,可选择的取代的C.sub.1-C.sub.4-烷基,环己基或可选择的取代的苯基,R.sub.4代表氢或C.sub.1-C.sub.4-烷基基团,适用于染色天然和合成纤维材料,例如染色羊毛或聚酰胺纤维,在水平上呈现紫色,具有很好的耐光、耐湿加工和耐汗液性能,颜色产率良好。