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US4404136A Chrome complexed azo or azomethine hexadentate dyes 失效
铬复合偶氮或偶氮甲基六齿染料

Chrome complexed azo or azomethine hexadentate dyes
Abstract:
Chrome-complexed hexadentate dyes which include an ortho, ortho-dihydroxy azo or azomethine dye moiety, a colorless ligand which is a radical of an iminodiacetic acid and a linkage connecting the ligand to the dye moiety. In one embodiment the dyes include a photographically useful group and are also useful in photographic applications.
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