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US4802889A 2-cyano-4,6-dinitrophenyl mono-azo dyes for polyester and cellulose acetate 失效
用于聚酯和醋酸纤维素的2-氰基-4,6-二硝基苯偶氮染料

2-cyano-4,6-dinitrophenyl mono-azo dyes for polyester and cellulose
acetate
摘要:
Monoazo dyestuff of the formula ##STR1## wherein R.sup.1 is 4 alkyl having 1 to 3 carbon atoms, andR.sup.2 is methyl, ethyl or alkoxy having 1 to 4 carbon atoms hich is unsubstituted or substituted by methoxy or ethoxy is useful for dyeing and printing hydrophobic fibers a blue color.
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