Process for dyeing keratinous fibres and dyeing composition using an indole derivative, a quinone dye and an oxidizing system

Claim 1

A process for dyeing keratinous fibers comprising applying to said fibers at least one composition (A) containing in a medium suitable for dyeing said fibers, (a) at least one indole derivative having the formula ##STR6## wherein R 1 represents hydrogen, lower alkyl or --SiR 6 R 7 R 8 , R 2 and R 3 , each independently, represent hydrogen, lower alkyl, carboxyl, lower alkoxycarbonyl or --COOSiR 6 R 7 R 8 , R 4 and R 5 , each independently, represent hydrogen, linear or branched C 1 -C 20 alkyl, formyl, linear or branched C 2 -C 20 acyl, linear or branched C 3 -C 20 alkenoyl, --SiR 6 R 7 R 8 , --P(O)(OR 9 ) 2 or R 9 OSO 2 , or R 4 and R 5 together with the oxygen atoms to which they are attached form a ring optionally containing a carbonyl group, a methylene group, a thiocarbonyl group, a ##STR7## group or a ##STR8## group. R 9 and R 10 represent hydrogen or lower alkyl, R 11 represents lower alkoxy, monoalkylamino or dialkylamino, and R 6 , R 7 and R 8 , each independently, represent linear or branched alkyl, and the acid addition salt thereof with an inorganic or organic acid or the corresponding alkali metal, alkaline earth metal or amine salt thereof, said indole derivative being present in said composition (A) in an amount ranging from 0.01 to 5 percent by weight based on the total weight of said composition (A), (b) at least one quinone dye selected from the group consisting of (i) 1,4-hydroxynaphthoquinone having the formula ##STR9## wherein when R 12 represents OH, R 13 represents hydrogen, halogen, hydroxyl, alkoxy, nitro, alkyl or acyl, and R 14 , R 15 , R 16 and R 17 , each independently, represent hydrogen, hydroxyl, alkoxy, alkyl or acyl; or when R 14 represents OH, R 12 and R 13 , each independently, represent hydrogen, methyl, methoxy, nitro or halogen; R 15 and R 16 , each independently, represent hydrogen, hydroxyl, methyl or methoxy; and R 17 represents hydrogen, methyl or methoxy; (ii) a benzoquinone derivative having the formula ##STR10## wherein R 18 , R 19 , R 20 and R 21 , each independently, represent hydrogen, hydroxyl, alkoxy, alkyl, hydroxylated alkyl, phenyl, or OH-substituted phenyl, with the provisos that at least one of R 18 , R 19 , R 20 and R 21 is other than hydrogen and that R 18 and R 21 , or R 19 and R 20 are not alkyl simultaneously, and that when one of R 18 , R 19 , R 20 and R 21 represents methyl, hydroxy or methoxy, at least one of the other substituents is other than hydrogen, and that when two of R 18 , R 19 , R 20 and R 21 are identical and are situated para relative to each other and represent hydroxyl or methoxy, at least one of the other two substituents is other than hydrogen; and (iii) a hydroxyanthraquinone selected from the group consisting of 1,2-dihydroxyanthraquinone, 1,4-dihydroxyanthraquinone, 1,2,4-trihydroxyanthraquinone, 1,2,7-trihydroxyanthraquinone, 1,2,5,8-tetrahydroxyanthraquinone, 3-carboxyl-1,2,4-trihydroxyanthraquinone, 2-carboxyl-1-methyl-3,5,6,8-tetrahydroxyanthraquinone, 3-sulpho-1,2,4-trihydroxyanthraquinone, 3-sulpho-1,2-dihydroxyanthraquinone, 5,8-dichloro-1,4-dihydroxyanthraquinone and 3-hydroxymethylanthraquinone, said quinone dye being present in said composition (A) in an amount ranging from 0.01 to 5 percent by weight based on the total weight of said composition (A), developing a color on said fibers using an oxidizing system selected from the group consisting of: (i) a source of iodide ions and hydrogen peroxide, in which case said composition (A) contains either (a) a source of iodide ions or (b) hydrogen peroxide and the application of said composition (A) is preceded or followed by the application of composition (B) comprising in a medium suitable for dyeing said fibers (a') hydrogen peroxide at a pH ranging from 2 to 12 when said composition (A) contains a source of iodide ions, or (b') a source of iodide ions at a pH ranging from 3 to 11 when said composition (A) contains hydrogen peroxide; (ii) a nitrite source, in which case the application of said composition (A) is followed by the application of composition (B') comprising an aqueous composition having an acidic pH, said composition (A) or said composition (B') containing at least one said nitrite source; (iii) an oxidizing agent selected from the group consisting of periodic acid, a periodate, sodium hypochlorite, potassium ferricyanide, silver oxide, Fenton's reagent, lead (IV) oxide, cesium (V) sulphate, ammonium persulfate and ferric chloride, said oxidizing agent being present in said composition (A) or being applied to said fibers simultaneously or sequentially, separately in a composition (B") comprising a medium suitable for dyeing said fibers and said oxidizing agent; and (iv) an oxidizing agent selected from the group consisting of a permanganate and a dichromate, said oxidizing agent being present in an aqueous composition (B''') having a pH ranging from 2 to 10, said composition (B''') being applied to said fibers prior to the application of said composition (A) thereto.