Phenyl-azo-naphthol dyes
    8.
    发明授权
    Phenyl-azo-naphthol dyes 失效
    苯丙氨酸钠染料

    公开(公告)号:US3558592A

    公开(公告)日:1971-01-26

    申请号:US3558592D

    申请日:1967-12-12

    申请人: CIBA LTD

    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.