发明授权
US3950321A Disperse azo dyes of the 2,6-diaminopyridine series 失效
2,6-二氨基吡啶系列分散的AZO染色体

Disperse azo dyes of the 2,6-diaminopyridine series
摘要:
Disperse azo dyes of the 2,6-diaminopyridine series in which one of the amine groups in the 2-position or 6-position is acylated. The dyes give brilliant yellow to blue colorations of generally high fastness properties particularly on polyesters.
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