Patent ID: 7204857
Filing Date: 2007-04-17
Classification: A61K,A61Q

Abstract:
1. A process for dyeing at least one keratin fiber, comprising applying to said at least one keratin fiber a composition comprising: (a) at least one compound comprising at least one active methylene group, wherein said at least one compound comprising at least one active methylene group comprises at least one methylene group substituted with two groups each having an effect chosen from an electron-withdrawing effect and a mesomeric effect, and further wherein said at least one compound comprising at least one active methylene group is chosen from: in which: 2) derivatives having formula (II): and the cosmetically acceptable salts of each of said at least one compounds comprising at least one active methylene group; and (b) at least one compound chosen from aldehydes; ketones; quinones; diiminoisoindoline derivatives; 3-aminoisoindolone derivatives; and the cosmetically acceptable salts of each of said at least one compounds; wherein when said at least one compound is chosen from aldehydes, said aldehydes are chosen from aldehydes said having formula (III) and the cosmetically acceptable salts thereof: 6-membered heterocyclic rings; wherein when said at least one compound is chosen from ketones, said ketones are chosen from ketones having formula (IV), ketones having formula (V), and the cosmetically acceptable salts thereof: and with the proviso that a coloration of said at least one keratin fiber is achieved without an oxidizing agent.