Hair-dyeing compositions contain new and known diazo-thiazole derivatives as direct dyes, optionally in combination with oxidation dyes

摘要

An agent for dyeing or tinting keratin fibers (especially human hair) contains a disazo-thiazole derivative (I) in a cosmetically-acceptable carrier. An agent for dyeing or tinting keratin fibers (especially human hair) contains a disazo-thiazole derivative of formula (I) or a salt in a cosmetically-acceptable carrier. A = H, halogen, NO2 or 1-4C alkyl; B' = N or CH; X = 4-(NRR')-phenyl or 4-(NRR')naphthyl (both further ring substituted by C'); C' = halogen, 1-4C alkyl, 3-8C cycloalkyl, 1-4C alkoxy or -COOM; M = H or a suitable cation; and R, R' = H, 1-4C alkyl, allyl, 2-5C polyhydroxyalkyl, 3-8C cycloalkyl,1-4C amino- or hydroxy-alkyl, 1-4C alkoxy-1-4C alkyl, 1-4C alkoxy-1-4C hydroxyalkyl or 1-4C trialkylammonium-1-4C alkyl Also included is an Independent claim for 4 new compounds (I) i.e. 3-methoxy-1-((4-(5-nitro-(1,3-thiazol-2-yl)diazenyl)phenyl)(2-trimethy lammonium)ethyl)amino) propan-2-ol iodide, 2-((4-(5-nitro-(1,3-thiazol-2-yl)diazenyl)phenyl)(2-trimethylammonium) ethyl)amino) propan-2-ol iodide, 3-methoxy-1-((4-(1,3-thiazol-2-yldiazenyl)phenyl) (2-trimethylammonium)ethyl)amino) propan-2-ol iodide and 4-(1,3,4-thiadiazol2-yldiazenyl)naphthylamine.