P-aminophenols and colorants containing said compounds

Details P-aminophenols and colorants containing said compounds P-aminophenols and colorants containing said compounds

2005-01-11

2005-01-11

Gupta, Yogendra N. (Department: 1751)

Bleaching and dyeing; fluid treatment and chemical modification

Dyeing involving animal-derived natural fiber material ,...

Hair dyeing

C008S409000, C008S412000, C008S423000, C008S408000, C548S400000, C549S415000, C549S476000, C549S478000, C549S479000, C549S480000, C549S497000, C549S502000, C549S504000, C549S061000, C549S062000, C549S063000, C549S068000, C549S075000

Reexamination Certificate

active

06840965

ABSTRACT:
The object of the invention are p-aminophenol derivatives of general formula (I) or physiologically tolerated, water-soluble salts thereofand oxidative coloring preparations based on a developer-coupler combination containing at least one p-aminophenol derivative of formula (I).

REFERENCES:
patent: 196 07 751 (1997-09-01), None
Anna Maria Almerico et al. Polycondensed Nitrogen Heterocycles. (J. Heterocyclic Chem., 31, 193 (1994).

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