Method for the application of a pigment dyeing composition based on specific acrylic polymer and on silicone copolymer, and appropriate device

1. A method for non-permanent dyeing of human keratinous fibers, comprising applying a dyeing composition to the keratinous fibers using a container comprising a removable applicator comprising a permeable material through which the composition can pass, the composition being applied by bringing the applicator into contact with the keratinous fibers,

wherein the dyeing composition comprises:

at least one aqueous dispersion of particles of at least one hybrid hydrophobic film-forming acrylic polymer synthesized from at least one monomer having at least one (meth)acrylic acid group and/or esters of these acid monomers and/or amides of these acid monomers and from a least one styrene compound,

at least one linear block silicone copolymer present in an amount ranging from about 0.1% to about 15% by weight, relative to the total weight of the dyeing composition, and

at least one pigment.

2. The method according to claim 1 , wherein the keratinous fibers are chosen from hair, roots, sidelocks, non-head hair, beard hair, moustache hair, eyelashes, and eyebrows.

3. The method according to claim 1 , wherein the at least one linear block silicone copolymer is in the form of particles in dispersion in an aqueous medium.

4. The method according to claim 3 , wherein the aqueous dispersion comprising the at least one linear block silicone copolymer is an aqueous dispersion of divinyldimethicone/dimethicone copolymer.

5. The method according to claim 1 , wherein the at least one linear block silicone copolymer is obtained by a chain extension reaction in the presence of at least one catalyst, from at least:

(a) a polysiloxane (i) having at least one reactive group per molecule; and

(b) an organosilicone compound (ii) which reacts with the polysiloxane (i) by a chain extension reaction.

6. The method according to claim 5 , wherein the polysiloxane (i) is chosen from compounds of formula (I):

wherein R 1 and R 2 are independently chosen from hydrocarbon groups comprising from 1 to 20 carbon atoms, aryl groups and reactive groups, and n is an integer greater than 1, provided that there are on average between one and two reactive groups per polymer.

7. The method according to claim 6 , wherein the reactive groups are chosen from hydrogen; aliphatically unsaturated groups; hydroxyl; alkoxy groups; alkoxyalkoxy groups; acetoxy; amino groups; and mixtures thereof.

8. The method according to claim 6 , wherein R 1 is a methyl group and R 2 at the chain end is a vinyl group.

9. The method according to claim 5 , wherein the organosilicone compound (ii) is chosen from polysiloxanes of formula (I) and chain-extending agents.

10. The method according to claim 9 , wherein the chain-extending agents are chosen from silanes, siloxanes and silazanes.

11. The method according to claim 5 , wherein the organosilicone compound (ii) is chosen from liquid organohydropolysiloxanes of formula (II):

where n is an integer greater than 1.

12. The method according to claim 11 , wherein n is an integer greater than 10.

13. The method according to claim 1 , wherein the at least one hybrid hydrophobic film-forming acrylic polymer is chosen from styrene/acrylate copolymers resulting from the polymerization of at least one styrene monomer and of at least one C 1 -C 10 alkyl acrylate monomer.

14. The method according to claim 1 , wherein the at least one aqueous dispersion of particles of at least one hybrid hydrophobic film-forming acrylic polymer is present in the dyeing composition in an amount, as polymeric active materials, ranging from about 0.1% to about 30% by weight, relative to the total weight of the dyeing composition.

15. The method according to claim 1 , wherein the at least one hybrid hydrophobic film-forming acrylic polymer and the at least one linear block silicone copolymer are present in the dyeing composition in a ratio by weight, as active materials, ranging from about 0.2 to about 10.

16. The method according to claim 1 , wherein the at least one pigment is present in the dyeing composition in an amount ranging from about 0.01% to about 30% by weight, relative to the total weight of the dyeing composition.

17. The method according to claim 1 , wherein the dyeing composition further comprises at least one inorganic thickening agent chosen from clays.

18. The method according to claim 1 , wherein the application of the dyeing composition is optionally followed by drying the keratin fibers.

19. A device containing a non-permanent dyeing composition comprising:

at least one aqueous dispersion of particles of at least one hybrid hydrophobic film-forming acrylic polymer synthesized from at least one monomer having at least one (meth)acrylic acid group and/or esters of these acid monomers and/or amides of these acid monomers and from a least one styrene compound,

at least one linear block silicone copolymer present in an amount ranging from about 0.1% to about 15% by weight, relative to the total weight of the dyeing composition, and

at least one pigment,

wherein the device comprises a container comprising a removable applicator comprising a permeable material through which the dyeing composition can pass; and a removable stopper fitted to the removable applicator on the container.