N-BENZYL-P-PHENYLENEDIAMINE-DERIVATIVES CONTAINING COLOURING AGENTS FOR KERATIN FIBRES AND NOVEL N-BENZYL-P-PHENYLENEDIAMINE-DERIVATIVES

European Patent Office Patent

PATENT NO 1226107
APP PUB NO EP-1226107-A1
SERIAL NO

01913893

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N-Benzyl-p-phenylene diamine derivatives (I), with a ring-substituted benzyl group, and their physiologically compatible, water-soluble salts are new. N-Benzyl-p-phenylene diamine derivatives of formula (I), with a ring-substituted benzyl group, and their physiologically compatible, water-soluble salts are new: [Image] R 1H or 1-4C (hydroxy)alkyl; R 2R, cyano, nitro or morpholino; R : H, F, Cl, Br, I, 1-4C (hydroxy)alkoxy, 1-6C alkyl, 1-4C alkylthio ether, mercapto, amino, mono- or di-(1-4C (hydroxy)alkyl)-amino, trifluoromethyl, -acetyl (C(O)CH 3), trfluoroacetyl (C(O)CF 3), trimethylsilyl (Si(CH 3) 3), 1-4C hydroxyalkyl or 3-4C dihydroxyalkyl; R 3, R 4R, OH or acetamido; or R 3R 4a methylenedioxy (-O-CH 2-O-) bridge; R 5H, OH or 1-6 C alkyl; R 2-5not = H in at least one case; R 1not : H or 1-4 C alkyl if R 2, R 4, R 5H and R 3Cl; R 4not : nitro, methyl, OH, amino, dimethylamino, Br or Cl if R 1, R 2, R 3, R 5H. An independent claim is also included for oxidative colorants for keratin fibers, based on a developer substance-coupler substance combination, which contain compound(s) (I) or a physiologically compatible, water-soluble salt as developer component.

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