Water-soluble cationic dyestuffs of the formulae ##STR1## WHEREIN R.degree. is hydrogen, lower-alkyl or hydroxy-lower-alkyl; R.sup.1 is lower-alkyl, lower-alkenyl or hydroxy-lower-alkyl; R.sup.2 is lower-alkyl, lower-alkenyl, hydroxy-lower-alkyl or -(lower-alkylene)-NR.degree.Y or R.sup.1 and R.sup.2 together with the nitrogen atom, are pyrrolidino, piperidino or 4-lower-alkanoyl piperazino; Y is hydrogen or ##STR2## wherein R is hydrogen, lower-alkyl, lower-alkenyl, phenyl or phenyl-lower-alkyl; A is a member selected from the group consisting of an aromatic azo dyestuff residue attached to the quaternary ammonium nitrogen atom through a lower-alkylene bridge. k is a small integer whose value is dependent on the nature of A such that it has a range from one to two; R.sup.8 is lower-alkyl, lower-alkenyl or hydroxy-lower-alkyl; R.sup.9 is lower-alkyl, hydroxy-lower-alkyl or NH.sub.2 ; R.sup.10 is lower-alkyl or lower-alkenyl; A.sup.1 is an aromatic azo dyestuff residue attached to the quaternary ammonium nitrogen atom through a lower-alkylene bridge; g is a small integer whose value is dependent on the nature of A.sup.1 such that it has a range from one to two; R.sup.8' is lower alkyl; R.sup.9' is lower-alkyl, lower-alkenyl or hydroxy-lower-alkyl; R.sup.10' is lower-alkyl, lower-alkenyl or hydroxy-lower-alkyl or R.sup.9' and R.sup.10' together with the nitrogen atom are morpholino; A.sup.2 is an aromatic azo dyestuff residue attached to the quaternary ammonium nitrogen atom through a lower-alkylene bridge; h is a small integer whose value is dependent on the nature of A.sup.2 such that it has a range from one to two; and An is an anion Are particularly useful for coloring natural fibers, synthetic fiber-forming materials and cellulosic materials. These dyes dye cotton and paper various shades of stable yellows, reds and oranges. The dyeing from these dyes on paper are less prone to bleed and have a high degree of color discharge when bleached with hypochlorite or chlorine bleaches.
该文本描述了一系列
水溶性
阳离子染料的
化学结构公式,其中R.degree.为氢、低碳基或羟基低碳基;R.sup.1为低碳基、低烯基或羟基低碳基;R.sup.2为低碳基、低烯基、羟基低碳基或-(低碳基烷基)-NR.degree.Y或R.sup.1和R.sup.2与氮原子一起为
吡咯烷基、
哌嗪基或4-低酰基
哌嗪基;Y为氢或##STR2##其中R为氢、低碳基、低烯基、苯基或苯基低碳基;A为从芳香偶氮
染料残基中选择的一个成员,通过低碳基桥连接到季
铵氮原子。k是一个小整数,其值取决于A的性质,范围从1到2;R.sup.8为低碳基、低烯基或羟基低碳基;R.sup.9为低碳基、羟基低碳基或NH.sub.2;R.sup.10为低碳基或低烯基;A.sup.1是通过低碳基桥连接到季
铵氮原子的芳香偶氮
染料残基;g是一个小整数,其值取决于A.sup.1的性质,范围从1到2;R.sup.8'为低碳基;R.sup.9'为低碳基、低烯基或羟基低碳基;R.sup.10'为低碳基、低烯基或羟基低碳基或R.sup.9'和R.sup.10'与氮原子一起为
吗啡基;A.sup.2是通过低碳基桥连接到季
铵氮原子的芳香偶氮
染料残基;h是一个小整数,其值取决于A.sup.2的性质,范围从1到2;An是一个阴离子。这些
染料特别适用于着色天然纤维、合成纤维形成材料和
纤维素材料。这些
染料在棉花和纸张上染出各种稳定的黄色、红色和橙色。这些
染料在纸张上的染色不太容易渗透,并且在漂白时具有高度的色彩排放。