DICATIONIC BIS-HYDRAZONE COMPOUND, DYE COMPOSITION CONTAINING AT LEAST ONE SUCH COMPOUND, IMPLEMENTATION METHOD THEREFOR AND USE THEREOF

摘要

PROBLEM TO BE SOLVED: To obtain a new family of a dicationic bis-hydrazone compound useful as direct dye and a dye composition that contains at least one kind of such a compound in a preferable dye medium and colors keratin fibers, especially human keratin fibers such as the hair and to provide a dyeing method using the composition and its use.;SOLUTION: The dicationic bis-hydrazone compound is represented by general formula (I): DYE-L-DYE {DYE is a specific chromophoric group; group L is a chain comprising a specific linear or branched 1-60C (preferably 2-40C) hydrocarbon as a base}.;COPYRIGHT: (C)2007,JPO&INPIT