发明授权
US4116953A Azo dyes 失效
AZO DYES

Azo dyes
摘要:
Compounds of the formula ##STR1## in which K is the radical of a coupling component;X is hydrogen, chloro, bromo, methyl or nitro; andY is hydrogen, chloro, bromo or methyl.The compounds are eminently suitable as pigments for coloring printing inks, surface coatings and resins with exceptional fastness properties.
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