Pyrazolyl-azo-indole dyestuffs
    6.
    发明授权
    Pyrazolyl-azo-indole dyestuffs 失效
    吡唑啉偶氮染料

    公开(公告)号:US3634391A

    公开(公告)日:1972-01-11

    申请号:US3634391D

    申请日:1969-07-25

    CPC classification number: C09B29/0025

    Abstract: PYRAZOLPY-AZO-INDOLE COMPOUNDS PRODUCE BRIGHT YELLOW SHADES ON HYDROPHOBIC FIBERS AND EXHIBIT EXCELLENT FASTNESS TO LIGHT. THE PYRAZOLYL DIAZO COMPONENT IS SUBSTITUTED WITH A CYANO, CARBAMOYL, NITRO OR ALKOXYCARBONYL GROUP ON THE RING CARBON ADJACENT OT THE CARBON ATOM BONDED TO THE AZO GROUP.

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