hydroxypropylated 2-nitro-p-phenylenediamines, their preparation process and their use in dyeing keratinous fibers.

摘要

2 HOW formula (I) wherein: R1 represents a C1 C4 alkyl radical (BETA) IDROXIPROPILO; R2 and R3, independently of one another represent a radical (BETA) LO, AND RVA that at least one of the radicals R1, R2 or R3 REPRESENTS A RADICAL AND ESIGNAR SIMULTANEOUSLY A RADICAL (BETA) LES cosmetically acceptable of this compound. APPLIED TO DIRECT HAIR DYE FOR OBTAINING A BLUE VIOLET BLUE TONES RESISTANT to washing, light, bad weather and perspiration.