Oxidation dyeing composition for keratin fibers comprising a cationic poly(vinyllactam)

A method for dyeing keratin fibers, comprising applying to the keratin fibers at least one composition (A) comprising, in an appropriate dyeing medium, at least one oxidation dye, wherein color is developed at alkaline, neutral or acidic pH with the aid of a composition (B) comprising at least one oxidizing agent, which is mixed at the time of use with the composition (A) or which is applied sequentially without intermediate rinsing, wherein at least one of the composition (A) and the composition (B) further comprises at least one cationic poly(vinyllactam) polymer comprising:

• a) at least one monomer chosen from vinyllactam and alkylvinyllactam monomers;
• b) at least one monomer chosen from those of the following formulae (I) and (II):
• wherein:
• X is chosen from an oxygen atom and radicals NR6,
• R1 and R6, which may be identical or different, are chosen from a hydrogen atom and linear and branched C1–C5 alkyl radicals,
• R2 is chosen from linear and branched C1–C4 alkyl radicals,
• R3, R4 and R5, which may be identical or different, are chosen from a hydrogen atom, linear and branched C1–C30 alkyl radicals and radicals of formula (III):
• —(Y2)r—(CH2—CH(R7)—O)x—R8 (III)
• Y, Y1 and Y2, which may be identical or different, are chosen from linear and branched C2–C16 alkylene radicals,
• R7 is chosen from a hydrogen atom, linear and branched C1–C4 alkyl radicals, and linear and branched C1–C4 hydroxyalkyl radicals,
• R8 is chosen from a hydrogen atom and linear and branched C1–C30 alkyl radicals,
• p, q and r, which may be identical or different, are each either zero or 1,
• m and n, which may be identical or different, are each an integer ranging from 0 to 100,
• x is an integer ranging from 1 to 100,
• Z− is an anion chosen from organic and inorganic acid anions,
• wherein:
• at least one of the substituents R3, R4, R5 and R8 is chosen from linear and branched C9–C30 alkyl radicals,
• if m or n is different from zero, then q is equal to 1, and
• if m or n is equal to zero, then p or q is equal to 0.

A method for dyeing keratin fibers, comprising applying to dry or wet keratin fibers a ready-to-use composition, allowing the composition to act for an exposure time ranging from 1 to 60 minutes, rinsing the keratin fibers, and then optionally washing the keratin fibers with shampoo, rinsing the keratin fibers again, and drying the keratin fibers,

• wherein the ready-to-use composition is prepared at the time use by combining a composition A′ comprising, in an appropriate dyeing medium, at least one oxidation dye;
• a composition A″ comprising, in an appropriate dyeing medium, at least one cationic poly(vinyllactam) polymer comprising:
• a) at least one monomer chosen from vinyllactam and alkylvinyllactam monomers;
• b) at least one monomer chosen from those of the following formulae (I) and (II):
• wherein:
• X is chosen from an oxygen atom and NR6 radicals,
• R1 and R6, which may be identical or different, are chosen from a hydrogen atom and linear and branched C1–C5 alkyl radicals,
• R2 is chosen from linear and branched C1–C4 alkyl radicals,
• R3, R4 and R5, which may be identical or different, are chosen from a hydrogen atom, linear and branched C1–C30 alkyl radicals and radicals of formula (III):
• (Y2)r—(CH2—CH(R7)—O)x—R8 (III)
• Y, Y1 and Y2, which may be identical or different, are chosen from linear and branched C2–C16 alkylene radicals,
• R7 is chosen from a hydrogen atom, linear and branched C1–C4 alkyl radicals, and linear and branched C1–C4 hydroxyalkyl radicals,
• R8 is chosen from a hydrogen atom and linear and branched C1–C30 alkyl radicals,
• p, q and r, which may be identical or different, are each either zero or 1,
• m and n, which may be identical or different, are each an integer ranging from 0 to 100,
• x is an integer ranging from 1 to 100,
• Z− is an anion chosen from organic and inorganic acid anions,
• wherein:
• at least one of the substituents R3, R4, R5 and R8 is chosen from linear and branched C9–C30 alkyl radicals,
• if m or n is different from zero, then q is equal to 1, and
• if m or n is equal to zero, then p or q is equal to 0;
• and
• an oxidizing composition B comprising, in an appropriate dyeing medium, at least one oxidizing agent,
• wherein the composition A′ does not comprise the at least one cationic poly(vinyllactam) polymer.

A multi-compartment device for dyeing keratin fibers, comprising

• a first compartment comprising a composition A1 comprising, in an appropriate dyeing medium, at least one oxidation dye, and
• a second compartment comprising a composition B1 comprising, in an appropriate dyeing medium, at least one oxidizing agent,
• wherein at least one of the composition A1 and the composition B1 comprises at least one cationic poly(vinyllactam) polymer comprising
• a) at least one monomer chosen from vinyllactam and alkylvinyllactam monomers;
• b) at least one monomer chosen from those of the following formulae (I) and (II):
• wherein:
• X is chosen from an oxygen atom and NR6 radicals,
• R1 and R6, which may be identical or different, are chosen from a hydrogen atom and linear and branched C1–C5 alkyl radicals,
• R2 is chosen from linear and branched C1–C4 alkyl radicals,
• R3, R4 and R5, which may be identical or different, are chosen from a hydrogen atom, linear and branched C1–C30 alkyl radicals and radicals of formula (III):
• —(Y2)r—(CH2—CH(R7)—O)x—R8 (III)
• Y, Y1 and Y2, which may be identical or different, are each chosen from linear and branched C2–C16 alkylene radicals,
• R7 is chosen from a hydrogen atom, linear and branched C1–C4 alkyl radicals, and linear and branched C1–C4 hydroxyalkyl radicals,
• R8 is chosen from a hydrogen atom and linear and branched C1–C30 alkyl radicals,
• p, q and r, which may be identical or different, are each either zero or 1,
• m and n, which may be identical or different, are each an integer ranging from 0 to 100,
• x is an integer ranging from 1 to 100,
• Z− is an anion chosen from organic and inorganic acid anions,
• wherein:
• at least one of the substituents R3, R4, R5 and R8 is chosen from linear and branched C9–C30 alkyl radicals,
• if m or n is different from zero, then q is equal to 1, and
• if m or n is equal to zero, then p or q is equal to 0.

A multi-compartment device for dyeing keratin fibers, comprising

• a first compartment comprising a composition A2 comprising, in an appropriate dyeing medium, at least one oxidation dye,
• a second compartment comprising a composition B2 comprising, in an appropriate dyeing medium, at least one oxidizing agent, and
• a third compartment comprising a composition C comprising, in an appropriate dyeing medium, at least one cationic poly(vinyllactam) polymer comprising
• a) at least one monomer chosen from vinyllactam and alkylvinyllactam monomers;
• b) at least one monomer chosen from those of the following formulae (I) and (II):
• wherein:
• X is chosen from an oxygen atom and NR6 radicals,
• R1 and R6, which may be identical or different, are chosen from a hydrogen atom and linear and branched C1–C5 alkyl radicals,
• R2 is chosen from linear and branched C1–C4 alkyl radicals,
• R3, R4 and R5, which may be identical or different, are chosen from a hydrogen atom, linear and branched C1–C30 alkyl radicals and radicals of formula (III):
• —(Y2)r—(CH2—CH(R7)—O)x—R8 (III)
• Y, Y1 and Y2, which may be identical or different, are each chosen from linear and branched C2–C16 alkylene radicals,
• R7 is chosen from a hydrogen atom, linear and branched C1–C4 alkyl radicals, and linear and branched C1–C4 hydroxyalkyl radicals,
• R8 is chosen from a hydrogen atom and linear and branched C1–C30 alkyl radicals,
• p, q and r, which may be identical or different, are each either zero or 1,
• m and n, which may be identical or different, are each an integer ranging from 0 to 100,
• x is an integer ranging from 1 to 100,
• Z− is an anion chosen from organic and inorganic acid anions,
• wherein:
• at least one of the substituents R3, R4, R5 and R8 is chosen from linear and branched C9–C30 alkyl radicals,
• if m or n is different from zero, then q is equal to 1, and
• if m or n is equal to zero, then p or q is equal to 0,
• wherein at least one of the composition A2 and the composition B2 may further comprise said at least one cationic poly(vinyllactam) polymer.