申请人:Bayer Aktiengesellschaft
公开号:US03980677A1
公开(公告)日:1976-09-14
Dyestuffs which contain sulphonic acid groups and correspond to the formula ##SPC1## In which R.sub.1 and R.sub.2 denote lower alkyl radicals with 1 - 3 carbon atoms, which may be substituted; A means an optionally substituted aliphatic, cycloaliphatic, araliphatic, aromatic or heterocyclic radical; n stands for 0, 1 or 2; and R.sub.4 denotes a sulphonic acid group when n = 0 and denotes hydrogen or a sulphonic acid when n = 1 or 2. The dyestuffs are eminently suitable for the dyeing and printing of natural and synthetic polyamide fiber materials.
含有磺酸基团并符合以下公式的染料:##SPC1##
其中,R.sub.1和R.sub.2表示1-3个碳原子的较低烷基基团,可以被取代;A表示可选取代的脂肪族、环状脂肪族、芳香族或杂环基团;n代表0、1或2;当n=0时,R.sub.4表示磺酸基团,当n=1或2时,R.sub.4表示氢或磺酸。这些染料非常适合于天然和合成聚酰胺纤维材料的染色和印花。