发明授权
US5066791A Pyridoneazo dyes with an M-aminobenzoic ester as the diazo component 失效
具有作为DIAZO组分的M-氨基苯甲酸酯的吡哆醛染料

Pyridoneazo dyes with an M-aminobenzoic ester as the diazo component
摘要:
Pyridoneazo dyes of the formula ##STR1## where L is C.sub.2 - or C.sub.3 -alkylene, R is C.sub.1 -C.sub.3 -alkyl and n is 1, 2 or 3, are useful for dyeing polyester fabrics.
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