Direct hair dyeing composition comprising a cross-linked polymer with acrylic and/or acrylate units and with acrylamide units

A process of improving the conservation of the dyeing power of a direct dye composition comprising at least one direct dye by including in said composition an effective amount of at least one crosslinked polymer containing acrylamide residue units and residue units selected from acrylic and acrylate, wherein said at least one direct dye and said effective amount of at least one crosslinked polymer are in said direct dye composition in a cosmetically acceptable support suitable for dyeing, and wherein said at least one direct dye is chosen from:

• at least one nitrobenzene dye of formula (I):
• wherein:
• R3 is chosen from an NH2 radical, amino radicals monosubstituted with a radical chosen from alkyl, monohydroxyalkyl, polyhydroxyalkyl, and aminoalkyl radicals, and amino radicals disubstituted with identical or different radicals chosen from alkyl, monohydroxyalkyl, polyhydroxyalkyl and aminoalkyl radicals,
• R4 is chosen from hydrogen, hydroxyl radicals, alkoxy radicals, monohydroxyalkyloxy radicals, polyhydroxyalkyloxy radicals, an NH2
• radical, and amino radicals monosubstituted with a radical chosen from alkyl, monohydroxyalkyl, polyhydroxyalkyl, and aminoalkyl radicals, and
• R5 is chosen from hydrogen, alkyl radicals, nitro radicals, and halogen, wherein said alkyl and alkoxy radicals are C1-C4 and are linear or branched;
• at least one cosmetically acceptable salt of said nitrobenzene dye of formula (I);
• at least one anthraquinone dye of formula (III):
• wherein:
• R6 is chosen from hydrogen, monohydroxyalkyl radicals, and polyhydroxyalkyl radicals,
• R7 is chosen from hydrogen, alkyl radicals, and alkoxy radicals,
• R8 is chosen from hydrogen, hydroxyl radicals, amino radicals, monohydroxyalkylamino radicals, and polyhydroxyalkylamino radicals, and
• R9 and R10 are independently chosen from hydrogen, hydroxyl radicals, and amino radicals,
• wherein said alkyl and alkoxy radicals are C1-C4 and are linear or branched;
• at least one cosmetically acceptable salt of said anthraquinone dye of formula (II);
• at least one azo dye of formula (III):
• wherein:
• R11 is chosen from nitro radicals and amino radicals, wherein said amino radicals may be mono- or disubstituted with identical or different alkyl radicals,
• R12 is chosen from hydrogen and alkyl radicals, and
• R13 is chosen from amino radicals, wherein said amino radicals may be mono- or disubstituted with identical or different monohydroxyalkyl radicals,
• wherein said alkyl radicals are C1-C4 and are linear or branched;
• and
• at least one cosmetically acceptable salt of said azo dye of formula (III).

A process for dyeing hair by direct dyeing comprising:

• applying to said hair when wet or dry an effective amount of a composition comprising, in a cosmetically acceptable support suitable for dyeing, at least one direct dye and at least one crosslinked polymer containing acrylamide residue units and residue units selected from acrylic and acrylate wherein said at least one direct dye is chosen from:
• at least one nitrobenzene dye of formula (I):
• wherein:
• R3 is chosen from an NH2 radical, amino radicals monosubstituted with a radical chosen from alkyl, monohydroxyalkyl, polyhydroxyalkyl, and aminoalkyl radicals, and amino radicals disubstituted with identical or different radicals chosen from alkyl, monohydroxyalkyl, polyhydroxyalkyl, and aminoalkyl radicals,
• R4 is chosen from hydrogen, hydroxyl radicals, alkoxy radicals, monohydroxyalkyloxy radicals, polyhydroxyalkyloxy radicals, an NH2 radical, and amino radicals monosubstituted with a radical chosen from alkyl, monohydroxyalkyl, polyhydroxyalkyl, and aminoalkyl radicals, and
• R5 is chosen from hydrogen, alkyl radicals, nitro radicals, and halogen, wherein said alkyl and alkoxy radicals are C1-C4 and are linear or branched;
• at least one cosmetically acceptable salt of said nitrobenzene dye of formula (I);
• at least one anthraquinone dye of formula (II):
• wherein:
• R6 is chosen from hydrogen, monohydroxyalkyl radicals, and polyhydroxyalkyl radicals,
• R7 is chosen from hydrogen, alkyl radicals, and alkoxy radicals,
• R8 is chosen from hydrogen, hydroxyl radicals, amino radicals, monohydroxyalkylamino radicals, and polyhydroxyalkylamino radicals, and
• R9 and R10 are independently chosen from hydrogen, hydroxyl radicals, and amino radicals,
• wherein said alkyl and alkoxy radicals are C1-C4 and are linear or branched;
• at least one cosmetically acceptable salt of said anthraquinone dye of formula (II);
• at least one azo dye of formula (III):
• wherein:
• R11 is chosen from nitro radicals and amino radicals, wherein said amino radicals may be mono- or disubstituted with identical or different alkyl radicals,
• R12 is chosen from hydrogen and alkyl radicals, and
• R13 is chosen from amino radicals, wherein said amino radicals may be mono- or disubstituted with identical or different monohydroxyalkyl radicals,
• wherein said alkyl radicals are C1-C4 and are linear or branched;
• and
• at least one cosmetically acceptable salt of said azo dye of formula (III).

A process for dyeing hair by direct dyeing, comprising:

• applying to said hair when wet an effective amount of a composition comprising, in a cosmetically acceptable support suitable for dyeing, at least one direct dye and at least one crosslinked polymer containing acrylamide residue units and residue units selected from acrylic and acrylate wherein said at least one direct dye is chosen from:
• at least one nitrobenzene dye of formula (I):
• wherein:
• R3 is chosen from an NH2 radical, amino radicals monosubstituted with a radical chosen from alkyl, monohydroxyalkyl, polyhydroxyalkyl, and aminoalkyl radicals, and amino radicals disubstituted with identical or different radicals chosen from alkyl, monohydroxyalkyl, polyhydroxyalkyl and aminoalkyl radicals,
• R4 is chosen from hydrogen, hydroxyl radicals, alkoxy radicals, monohydroxyalkyloxy radicals, polyhydroxyalkyloxy radicals, an NH2 radical, and amino radicals monosubstituted with a radical chosen from alkyl, monohydroxyalkyl, polyhydroxyalkyl, and aminoalkyl radicals, and
• R5 is chosen from hydrogen, alkyl radicals, nitro radicals, and halogen,
• wherein said alkyl and alkoxy radicals are C1-C4 and are linear or branched;
• at least one cosmetically acceptable salt of said nitrobenzene dye of formula (I);
• at least one anthraquinone dye of formula (II);
• wherein:
• R6 is chosen from hydrogen, monohydroxyalkyl radicals, and polyhydroxyalkyl radicals,
• R7 is chosen from hydrogen, alkyl radicals, and alkoxy radicals,
• R8 is chosen from hydrogen, hydroxyl radicals, amino radicals, monohydroxyalkylamino radicals, and polyhydroxyalkylamino radicals, and
• R9 and R10 are independently chosen from hydrogen, hydroxyl radicals, and amino radicals,
• wherein said alkyl and alkoxy radicals are C1-C4 and are linear or branched;
• at least one cosmetically acceptable salt of said anthraquinone dye of formula (II);
• at least one azo dye of formula (III):
• wherein:
• R11 is chosen from nitro radicals and amino radicals, wherein said amino radicals may be mono- or disubstituted with identical or different alkyl radicals,
• R12 is chosen from hydrogen and alkyl radicals, and
• R13 is chosen from amino radicals, wherein said amino radicals may be mono- or disubstituted with identical or different monohydroxyalkyl radicals,
• wherein said alkyl radicals are C1-C4 and are linear or branched;
• and
• at least one cosmetically acceptable salt of said azo dye of formula (III);
• and drying said hair.