| 摘要 |
<p>1483864 Dyeing keratin with oxidation dyes L'OREAL 21 Feb 1975 [22 Feb 1974] 7420/75 Heading D1B [Also in Division C2] Keratin fibres, in particular human hair, are dyed by impregnating with a composition comprising at least one compound of formula I wherein each of R 1 and R 4 independently denotes a hydrogen or halogen atom or a lower alkyl, lower alkoxy, amino, (lower alkyl) -amino, acylamino, carbamyl-(lower alkyl)-amino, hydroxy-(lower alkyl)-amino, (lower alkoxy carbonyl)-amino or ureido group; each of R 2 and R 3 independently denotes a hydrogen or halogen atom or a lower alkyl, lower alkoxy, acylamino or ureido group; R 5 denotes a hydrogen or halogen atom or a lower alkyl or lower alkoxy group; R 6 denotes a hydroxy-(lower alkyl), amino-(lower alkyl), acylamino-(lower alkyl), mesylamino-(lower alkyl), carbamyl-(lower alkyl), sulpho-(lower alkyl), piperidino-(lower alkyl), morpholino- (lower alkyl), mono-(lower alkyl)-[amino-(lower alkyl)] or di-(lower alkyl)-[amino-(lower alkyl)] group; and R 7 denotes a lower alkyl, hydroxy- (lower alkyl), amino-(lower alkyl), acylamino- (lower alkyl), mesylamino-(lower alkyl), carbamyl-(lower alkyl), sulpho-(lower alkyl), piperidino-(lower alkyl), morpholino-(lower alkyl), mono-(lower alkyl)-[amino-(lower alkyl)] or di-(lower alkyl)-[amino-(lower alkyl)] group, said lower alkyl and lower alkoxy groups containing I to 6 carbon atoms and said acyl groups being a group of formula: R-CO in which R is an aliphatic or aromatic hydrocarbyl radical; or a salt thereof, together with a compatible diluent or carrier, for 5 to 30 minutes and then rinsing the fibres and optionally washing them with a shampoo and drying them. Hydrogen peroxide, urea peroxide and ammonium persulphate are used as oxidising agents.</p> |
