发明授权
US3558592A Phenyl-azo-naphthol dyes 失效
苯丙氨酸钠染料

Phenyl-azo-naphthol dyes
摘要:
THE INVENTION RELATES TO MONOAZO DYESTUFFS WHICH, IN THE FORM OF THE FREE ACID, CORRESPOND TO THE FORMULA

2-((2-(HO3S-),(X-NH-)PHENYL)-N=N-),3-(HO3S-),5,6-DI(Y-),

8-(Z-NH-)NAPHTH-1-OL

IN WHICH ONE OF THE SYMBOLS Y RESPRESENTS A HYDROGEN ATOM AND THE OTHER SYMBOL Y REPRESENTS A SULPHONIC ACID GROUP Z REPESENTS AN ACYL GROUPING AND X REPRESENTS AN A-BROMACRYLIC GROUPING, AN AB,-DIBROMOPROPIONYL GROUPING, A MONO- OR DINITROCHLOROHBENZOYL OR A MONO- OR DINITROBENZENESULPHONYL GROUPING.
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