SPECIFIC CATIONIC DIAZO COMPOUND, COMPOSITION CONTAINING THE SAME AS DIRECT DYE, METHOD FOR DYEING KERATIN FIBER, AND DEVICE THEREFOR

摘要

PROBLEM TO BE SOLVED: To provide a direct dye suitable for dyeing keratin fibers, to provide a method for dyeing the keratin fibers, and to provide a multi-fractionation device. SOLUTION: A cationic diazo compound represented by formula (1) : Dyel-LK-Dye2. The compound is represented, for example, by the formula. A dye composition containing the compound as a direct dye. The method for dyeing keratin fibers with the composition. And the multi-division device. COPYRIGHT: (C)2006,JPO&NCIPI