发明授权
US4176229A Basic dyes 失效
碱性染料

Basic dyes
摘要:
Dyes of the general formula I ##STR1## where A.sup..crclbar. is an anion, B is methyl, ethyl, benzyl or .beta.-hydroxyethyl, n is 1 or 2, R is alkyl of 1 to 4 carbon atoms, X is hydrogen, methoxy, ethoxy or chlorine and Z is ##STR2## The dyes of the formula I give very fast dyeings on anionically modified fibers.
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