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    11.
    发明专利
    未知

    公开(公告)号：DE3844424A1

    公开(公告)日：1989-07-13

    申请号：DE3844424

    申请日：1988-12-30

    Applicant: OREAL

    Inventor： GROLLIER JEAN FRANCOIS ,  FOURCADIER CHANTAL

    IPC: A61K8/00 ,  A61K8/20 ,  A61K8/22 ,  A61K8/23 ,  A61K8/34 ,  A61K8/36 ,  A61K8/37 ,  A61K8/39 ,  A61K8/40 ,  A61K8/41 ,  A61K8/42 ,  A61K8/49 ,  A61K8/58 ,  A61Q5/10 ,  D06P3/04 ,  D06P3/08 ,  D06P3/24

    Abstract: Process for dyeing keratinous fibers, which comprises applying to these fibers at least one composition (A) containing, in a suitable medium for dyeing, at least one indole derivative and at least one substituted 2-nitro-para-phenylenediamine selected from the group consisting of 1-N-( beta -hydroxyethyl)amino-2-nitro-4-N', N'-(bis- beta -hydroxyethyl)aminobenzene and 1-N-( beta -hydroxyethyl)amino-2-nitro-4-aminobenzene, the color being developed with the aid of an oxidizing system consisting of: (i) iodide ions and hydrogen peroxide, the composition (A) additionally containing in this case either (a) iodide ions or (b) hydrogen peroxide and the application of this composition (A) being preceded or followed by the application of a composition (B) which contains, in a medium suitable for dyeing, either: (a) hydrogen peroxide at a pH of between 2 and 12 and preferably between 2 and 7 when the composition (A) contains iodide ions, or: (b) iodide ions at a pH of between 3 and 11 when the composition (A) contains hydrogen peroxide; (ii) nitrites, the application of the composition (A) being followed, in this case, by the application of a composition (B) consisting of an aqueous composition exhibiting an acidic pH, the composition (A) or the composition (B) containing at least one nitrite; (iii) oxidizing agents selected from teh group consisting of periodic acid and periodates, sodium hypochlorite, potassium ferricyanide, silver oxide, Fenton's reagent, lead (IV) oxide caesium (V) sulphate, ammonium persulphate and ferric chloride, these oxidizing agents being present in the composition (A) or applied simultaneously or sequentially in a separate manner by means of a composition (B) containing them in a suitable medium for dyeing; or else (iv) a permanganate or a dichromate, these oxidizing agents being applied by means of an aqueous composition (B) at a pH of 2 to 10, before the application of the composition (A).

    13.
    发明专利
    未知

    公开(公告)号：IT8868170D0

    公开(公告)日：1988-12-29

    申请号：IT6817088

    申请日：1988-12-29

    Applicant: OREAL

    Inventor： GROLLIER JEAN FRANCOIS ,  FOURCADIER CHANTAL

    IPC: A61K8/00 ,  A61K8/20 ,  A61K8/22 ,  A61K8/23 ,  A61K8/34 ,  A61K8/36 ,  A61K8/37 ,  A61K8/39 ,  A61K8/40 ,  A61K8/41 ,  A61K8/42 ,  A61K8/49 ,  A61K8/58 ,  A61Q5/10 ,  D06P3/04 ,  D06P3/08 ,  D06P3/24

    Abstract: Process for dyeing keratinous fibers, which comprises applying to these fibers at least one composition (A) containing, in a suitable medium for dyeing, at least one indole derivative and at least one substituted 2-nitro-para-phenylenediamine selected from the group consisting of 1-N-( beta -hydroxyethyl)amino-2-nitro-4-N', N'-(bis- beta -hydroxyethyl)aminobenzene and 1-N-( beta -hydroxyethyl)amino-2-nitro-4-aminobenzene, the color being developed with the aid of an oxidizing system consisting of: (i) iodide ions and hydrogen peroxide, the composition (A) additionally containing in this case either (a) iodide ions or (b) hydrogen peroxide and the application of this composition (A) being preceded or followed by the application of a composition (B) which contains, in a medium suitable for dyeing, either: (a) hydrogen peroxide at a pH of between 2 and 12 and preferably between 2 and 7 when the composition (A) contains iodide ions, or: (b) iodide ions at a pH of between 3 and 11 when the composition (A) contains hydrogen peroxide; (ii) nitrites, the application of the composition (A) being followed, in this case, by the application of a composition (B) consisting of an aqueous composition exhibiting an acidic pH, the composition (A) or the composition (B) containing at least one nitrite; (iii) oxidizing agents selected from teh group consisting of periodic acid and periodates, sodium hypochlorite, potassium ferricyanide, silver oxide, Fenton's reagent, lead (IV) oxide caesium (V) sulphate, ammonium persulphate and ferric chloride, these oxidizing agents being present in the composition (A) or applied simultaneously or sequentially in a separate manner by means of a composition (B) containing them in a suitable medium for dyeing; or else (iv) a permanganate or a dichromate, these oxidizing agents being applied by means of an aqueous composition (B) at a pH of 2 to 10, before the application of the composition (A).

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