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    Reactive yellow ' -sulfatoethylsulfonyl phenylazo-4-(1-substituted phenyl-3-methyl-5-amino)-pyrazole dyes
    1.
    发明授权
    Reactive yellow ' -sulfatoethylsulfonyl phenylazo-4-(1-substituted phenyl-3-methyl-5-amino)-pyrazole dyes 失效
    反应性黄色-S-氟甲磺酰基苯基-4-（1-取代苯基-3-甲基-5-氨基） - 吡唑衍生物

    公开(公告)号：US3859271A

    公开(公告)日：1975-01-07

    申请号：US80179569

    申请日：1969-02-24

    申请人： SUMITOMO CHEMICAL CO

    发明人： SUGIYAMA HIROSHI ,  OTSUKA HIDEO ,  YAMAMOTO MASAKUZU ,  IKEDA TAKUO ,  OKUNO MASAMI

    IPC分类号： C09B62/51 ,  C09B62/74 ,  C09B62/82 ,  D06P1/38

    CPC分类号： C09B62/51

    摘要： WHEREIN THE BENZENE NUCLEUS A means the same as above; and thereafter treating the resulting mono-azo dye having a hydroxy group as Y in the formula II with sulfuric acid to convert the Beta -hydroxyethyl sulfone group to Beta -sulfatoethylsulfonyl group, and may be used for dyeing fibers a bright yellow shade with excellent fastness to light and washing.

    WHEREIN EACH X1 and X2 mean the same as above and Y represents a hydroxy group or -OSO3H group with 1-substituted phenyl-3-methyl5-amino-pyrazole represented by the formula

    WHEREIN X1 and X2 can each represent hydrogen atom, a lower alkyl group, a lower alkoxy group, a halogen atom, a carboxyl group, or a sulfonic acid group, and the nucleus A has at least one sulfonic acid group, and may have other substituents, is prepared by coupling a diazotized amine represented by the formula

    A reactive yellow dye having the formula