Patent ID: 7462204

Claim:
An agent for the oxidative coloring of keratin fibers, comprising at least one cationic 4,5-diaminopyrazole derivative selected from the group consisting of: 3-[(4,5-diamino-1H-pyrazol-1-yl)methyl]-1-methylpyridinium methylsulfate dihydrochloride, 4-[(4,5-diamino-1H-pyrazol-1-yl)methyl]-1-methylpyridinium methylsulfate dihydrochloride, 2-[(4,5-diamino-1H-pyrazol-1-yl)methyl]-1-methylpyridinium methylsulfate dihydrochloride, 4-[(4,5-diamino-1H-pyrazol-1-yl)methyl]-1-methylpyridinium methylsulfate dihydrochloride, 3-[(4,5-diamino-1H-pyrazol-1-yl)methyl]-1-methylpyridinium methylsulfate dihydrochloride, 4-[2-(4,5-diamino-1H-pyrazol-1-yl)ethyl]-1-methylpyridinium methylsulfate dihydrochloride, 1-[2-(4,5-diamino-1H-pyrazol-1-yl)ethyl]-1-methylpyrrolidinium chloride dihydrochioride, 4-[2-(4,5-diamino-1H-pyrazol-1-yl)ethyl]-4-methylmorpholin-4-ium chloride dihydrochloride and 3-[2-(4,5-diamino-1H-pyrazol-1-yl)ethyl]-1-methyl-1H-imidazol-3-ium chloride dihydrochloride.