Cationic substituted hydrazone dyes
Publication Date: 2004-Aug-17
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The present invention relates to novel cationic hydrazone dyes. Further, the present invention relates to compositions thereof, especially comprising other dyes, to processes for the preparation thereof and to the use thereof in the dyeing of organic material, such as keratin fibers, especially hair; or wool, leather, silk, cellulose or polyamides, and preferably human hair.