FR3124079A1 - Composition comprising an oily dispersion of polymer particles, a cationic polymer and an anionic polymer - Google Patents

Abstract

Composition comprising a dispersion of polymer particles, a cationic polymer and an anionic polymer The present invention relates to a composition comprising at least one dispersion of polymer particles in a hydrocarbon liquid fatty substance, at least one cationic polymer and at least one anionic polymer. The present invention also relates to a cosmetic treatment process, in particular a process for styling keratin fibres, in particular human keratin fibers such as the hair, using this composition. The present invention finally relates to the use of this composition for the cosmetic treatment of keratin fibres, in particular human keratin fibers such as the hair, and in particular for styling the hair, that is to say shaping and/or fixing the hair.

Description

Composition comprising an oily dispersion of polymer particles, a cationic polymer and an anionic polymer

The present invention relates to a composition, preferably aqueous, comprising at least one dispersion of polymer particles stabilized in a non-aqueous medium, at least one cationic polymer and at least one anionic polymer.

The present invention also relates to a cosmetic treatment process, in particular a process for styling keratin fibres, in particular human keratin fibers such as the hair, using this composition.

The present invention finally relates to the use of this composition for the cosmetic treatment of keratin fibres, in particular human keratin fibers such as the hair, and in particular for styling the hair, that is to say shaping and/or fixing the hair.

Styling products are usually used to build, structure the hairstyle and give it hold. They usually come in the form of lotions, gels, foams, creams, or sprays. These compositions generally comprise one or more film-forming polymers, or "fixing polymers", allowing the formation of a sheathing film on the hair and thus ensuring the maintenance of the hairstyle and/or the formation of microwelds between the hair thus ensuring the fixing of the hair.

These compositions are generally applied to wet hair, which is shaped before blow-drying or drying.

To obtain satisfactory and long-lasting fixing power, it is known to incorporate polymers with very high fixing power into styling products, and/or to increase the concentration of fixing polymer. However, the use of such extremely fixing products leads to a certain number of disadvantages.

Although the purpose of these products is to ensure that the hairstyle is fixed and held over time, they generally tend to freeze the hairstyle, in particular by providing a “helmet effect”, often poorly perceived by users.

The hair thus fixed has a dry and rough feel that is little appreciated by consumers.

Moreover, when the styling products are in the form of mousses, these may have more or less firm textures with limited grip. Conversely, gel textures can be greasy or sticky and can be difficult to apply to the hair. Compositions which leave no residue on the hair are also sought.

Thus, there is a real need to develop styling compositions which do not have the disadvantages mentioned above, ie which make it possible to obtain a lasting fixation of the hairstyle, with styling effects that persist all day or even several days, while maintaining a natural and unfixed appearance to the hairstyle.

There is in particular a need to develop compositions which provide good styling properties, in particular in terms of flexibility and volume, while providing a pleasant cosmetic feel, in particular a smooth and soft feel, a clean appearance, neither mattifying nor too bright. It is also expected that the roots of the hair can be detached, that the hair can gain in volume.

There is also a need to develop compositions which have a non-sticky and non-greasy texture that is easy to apply.

The object of the present invention is also to have a composition which makes it possible to obtain good hair fixing and holding properties, while maintaining a clean, non-sticky, residue-free feel to the hair and which can optionally be used directly when showering or shampooing.

The Applicant has discovered, surprisingly, that the combination of an oily dispersion of particular polymer particles, of a cationic polymer and of an anionic polymer makes it possible to achieve the objectives set out above; in particular to obtain a styling composition that is easy to apply and capable of conferring a lasting hold on the hairstyle while retaining a natural and non-frozen appearance, as well as a smooth and soft feel.

The subject of the present invention is in particular a composition, in particular a cosmetic composition, comprising:

1) one or more preferably anhydrous oily dispersions (A) comprising:
i) one or more particle(s) comprising one or more polymer(s) chosen from:

a) ethylenic homopolymers of (C ₁ -C ₄ )(alkyl)acrylate (C ₁ -C ₄ )alkyl, preferably (meth)acrylate (C ₁ -C ₄ )alkyl;

b) ethylenic copolymers of b1) (C ₁ -C ₄ )(alkyl)acrylate, (C ₁ -C ₄ )alkyl, and of b2) ethylenic monomers comprising one or more carboxy, anhydride, phosphoric acid, sulphonic acid and /or aryl such as benzyl; in particular b2) is a (C ₁ -C ₄ )(alkyl)acrylic acid, more particularly the copolymers of (meth)acrylate of (C ₁ -C ₄ )alkyl and of (meth)acrylic acid;

c) ethylenic copolymers of (C ₁ -C ₄ )(alkyl)acrylate (C ₁ -C ₄ )alkyl, preferably (meth)acrylate (C ₁ -C ₄ )alkyl; and (C ₁ -C ₄ )(alkyl)acrylate (C ₁ -C ₄ )alkyl,

ii) one or more polymeric stabilizing agent(s) chosen from:

d) ethylenic (C ₁ -C ₆ )(alkyl)acrylate (C ₉ -C ₂₂ )alkyl homopolymers, preferably (C ₉ -C ₂₂ )alkyl ethylenic (meth)acrylate homopolymers; and

e) ethylenic copolymers of (C ₁ -C ₆ )(alkyl)acrylate (C ₉ -C ₂₂ )alkyl, and of (C ₁ -C ₄ )(alkyl)acrylate (C ₁ -C ₄ )alkyl, preferably copolymers of (C ₉ -C ₂₂ )alkyl (meth)acrylate and (C ₁ -C ₄ )alkyl (meth)acrylate;

iii) one or more hydrocarbon-based liquid fatty substance(s);

2) one or more cationic polymers, and

3) one or more anionic polymers.

The composition of the invention has a pleasant, non-sticky and non-greasy texture, easy to apply to all of the hair to be styled. It also makes it possible to bring flexibility and volume to the hair, while maintaining a natural appearance and a smooth and soft touch.

Unlike the compositions of the prior art, the hair thus styled is maintained without being fixed, and the styling effects conferred by the composition of the invention are durable throughout the day, or even several days.

A subject of the present invention is also a process for the cosmetic treatment of keratin fibers, in particular human keratin fibers, such as the hair, comprising a step of applying to said keratin fibers a composition as defined above.

The present invention also relates to the use of a composition as defined above for styling, that is to say shaping and/or fixing, keratin fibers, in particular human keratin fibers such as than the hair.

Other objects, characteristics, aspects and advantages of the invention will appear even more clearly on reading the description and the examples which follow.

In what follows, and unless otherwise indicated, the limits of a domain of values are included in this domain, in particular in the expressions “included between” and “ranging from … to …”.

Furthermore, the expression “at least one” used in the present description is equivalent to the expression “one or more”.

Within the meaning of the present invention, and unless a different indication is given:

- an " alkyl radical " is a saturated C ₁ -C ₈ hydrocarbon group, linear or branched, in particular C ₁ -C _6, preferably C ₁ -C ₄ such as methyl, ethyl, isopropyl, and t- butyl;

- a stem "(VS ₉ -VS ₂₂ )alkylis a saturated hydrocarbon group at C₉-VS₂₂, especially in C₁₀-VS_20,preferentially in VS₁₂-VS₁₈, more preferably in VS₁₂-VS_16,linear or branched, such as stearyl, behenyl, isodecyl, lauryl, hexadecyl, or myristyl;

- an “ alkylene radical ” is a divalent C ₁ -C ₈ saturated hydrocarbon group, linear or branched, in particular C ₁ -C _6, preferably C ₁ -C ₄ such as methylene, ethylene or propylene;

- a “ cycloalkyl ” radical is a saturated cyclic hydrocarbon group comprising from 1 to 3 rings, preferably 2 rings, and comprising from 3 to 13 carbon atoms, preferably between 5 and 10 carbon atoms, such as cyclopentyl, cyclohexyl, cycloheptyl, norbornyl or isobornyl, the cycloalkyl radical possibly being substituted by one or more (C ₁ -C ₄ )alkyl groups such as methyl, preferably the cycloalkyl radical is an isobornyl group.

- a “ cyclic ” radical is a cyclic hydrocarbon group, saturated or unsaturated, aromatic or non-aromatic, comprising from 1 to 3 rings, preferably 1 ring, and comprising from 3 to 10 carbon atoms such as cyclohexyl or phenyl;

- an “ aryl ” radical is an aromatic unsaturated cyclic radical, comprising from 6 to 12 carbon atoms, mono or bicyclic, fused or not, preferably the aryl group comprises 1 ring and 6 carbon atoms such as phenyl;

- an " aryloxy " radical is an aryl-oxy radical, i.e. aryl-O- with aryl as defined above, preferably phenoxy;

- an " aryl(C ₁ -C ₄ )alkoxy " radical is an aryl-(C ₁ -C ₄ )alkyl-O- radical, preferably benzoxy;

- By “ keratin materials ” is meant particularly the skin (keratinized epithelium) and human keratin fibers such as the hair, the eyelashes, eyebrows, and body hair, preferably the hair, the eyebrows and the eyelashes, even more preferably the hair;

- the term " insoluble monomer " therefore means any monomer whose homopolymer or copolymer is not in soluble form, that is to say completely dissolved at a concentration greater than 5% by weight at room temperature (20 °C) in said medium. However, the so-called “ insoluble ” monomers can, as monomers, be soluble or insoluble in the liquid hydrocarbon fatty substance(s) iii), it being understood that they become insoluble after polymerization in the hydrocarbon liquid(s) iii);

- By “ ethylenic homopolymer ” is meant a polymer resulting from the polymerization of identical monomers;

- By “ ethylenic copolymer ” is meant a polymer resulting from the polymerization of different monomers, in particular at least 2 different monomers. Preferably, the ethylenic copolymer of the invention is derived from 2 or 3 different monomers, more preferably derived from 2 different monomers;

- By “ ethylenic monomer ” is meant an organic compound comprising one or more unsaturations of the >C=C< types, conjugated or not, capable of polymerizing;

- by “ soluble monomer ”, is meant any monomer whose homopolymer or copolymer, preferably homopolymer, is soluble at least to 5% by weight, at 20° C., in the hydrocarbon liquid fatty substance(s) iii) of the dispersion . The homopolymer is completely dissolved in the carbonaceous liquid(s) iii), visually at 20° C., ie no deposit, nor precipitate, nor agglomerate, nor insoluble sediment is noted visually. However, the so-called “ soluble ” monomers can, as monomers, be soluble or insoluble in the carbonaceous liquid fatty substance(s) iii), it being understood that they become soluble after polymerization in the hydrocarbon liquid(s) iii);

- by "fat " is meant an organic compound insoluble in water at ordinary room temperature (25°C) and at atmospheric pressure (760 mm Hg) (solubility less than 5% by weight and preferably at 1% even more preferably at 0.1%). They have in their structure at least one hydrocarbon chain comprising at least 6 carbon atoms or a sequence of at least two siloxane groups. In addition, fatty substances are generally soluble in organic solvents under the same temperature and pressure conditions, such as, for example, chloroform, ethanol, benzene, petroleum jelly or decamethyl cyclopentasiloxane. These fatty substances are neither polyoxyethylenated nor polyglycerolated. They are different from fatty acids because salified fatty acids constitute soaps that are generally soluble in aqueous media;

- “ liquid ” fatty substance is understood to mean in particular a fatty substance that is liquid at 25° C. and 1 atmosphere, preferably said fatty substance has a viscosity less than or equal to 7000 centipoise at 20° C.;

- by “ hydrocarbon ” fatty substance is meant a fatty substance which comprises at least 50% by weight, in particular from 50 to 100% by weight, for example from 60 to 99% by weight, or even from 65 to 95% by weight, or even from 70 to 90% by weight, relative to the total weight of said fatty substance, of carbonaceous compound, liquid at 25° C., having an overall solubility parameter according to HANSEN's solubility space of less than or equal to 20 (MPa) 1/2, or a mixture of such compounds;

- The global solubility parameter δ according to the HANSEN solubility space is defined in the article "Solubility parameter values" by Grulke, in the work "Polymer Handbook" 3 ^rd edition, Chapter VII, pages 519-559 by the relation δ = ( d _D2 + d _P2 + d _H2 ) ^1/2 in which: - d _D characterizes the LONDON dispersion forces resulting from the formation of dipoles induced during molecular collisions, - d _P characterizes the interaction forces of DEBYE between permanent dipoles, - d _H characterizes the specific interaction forces (type hydrogen bonds, acid/base, donor/acceptor, etc.); The definition of solvents in the three-dimensional solubility space according to HANSEN is described in the article by HANSEN: "The three dimensional solubility parameters" J. Paint Technol. 39, 105 (1967);

- “ oil ” means a fatty substance that is liquid at room temperature at room temperature (25° C.) and atmospheric pressure;

- by " hydrocarbon oil " is meant an oil formed essentially, or even consisting, of carbon and hydrogen atoms, and optionally of oxygen and nitrogen atoms, and not containing any silicon or of fluorine. It may contain hydroxy, ester, ether, carboxylic acid, amine and/or amide groups;

- “ volatile oil ” means an oil (or non-aqueous medium) capable of evaporating on contact with keratin materials, in particular the skin, in less than one hour, at ambient temperature and at atmospheric pressure. The volatile oil is a volatile cosmetic oil, liquid at ambient temperature, having in particular a non-zero vapor pressure, at ambient temperature and at atmospheric pressure, in particular, having a vapor pressure ranging from 0.13 Pa to 40,000 Pa (10 ^-3 to 300 mm Hg), and preferably ranging from 1.3 Pa to 13,000 Pa (0.01 to 100 mm Hg), and preferably ranging from 1.3 Pa to 1300 Pa (0.01 to 10mmHg);

- “ non-volatile oil ” means an oil having a vapor pressure of less than 0.13 Pa at room temperature and at atmospheric pressure;

- By “ silicone oil ” is meant an oil comprising at least one silicon atom, and in particular at least one Si—O group. The silicone oil can be volatile or non-volatile;

- By “ dispersing agent ” is meant a compound which makes it possible to protect the dispersed particles against their agglomeration or flocculation. This dispersing agent can be a surfactant, an oligomer, a polymer or a mixture of several of them, bearing one or more functionalities having a strong affinity for the surface of the particles to be dispersed; in particular, they can cling physically or chemically to the surface of the pigments. These dispersing agents also have at least one functional group that is compatible or soluble in the continuous medium. Said agent can be charged, it can be anionic, cationic, zwitterionic or neutral;

- By “ anhydrous ” dispersion or composition is meant a dispersion or composition containing less than 2% by weight of water, or even less than 0.5% of water, and in particular free of water; where appropriate, such small amounts of water can in particular be supplied by ingredients of the composition which can contain residual amounts thereof;

Oily dispersion (A) of polymer particles

The oily oily dispersion (A) of the invention comprises i) one or more particles of at least one surface-stabilized polymer with ii) at least one stabilizing agent in a preferably anhydrous medium, additionally containing iii) at least one liquid hydrocarbon fat.

In order to obtain such a dispersion (A), it is proposed to polymerize particular monomers capable of forming the polymer core i) in the presence of a polymeric random stabilizer ii) comprising mainly a soluble part ii) and a minor part an insoluble part i) in the dispersion medium, i.e. in the liquid hydrocarbon fatty substance(s) iii).

The dispersions according to the invention consist of particles, generally spherical, and of at least one surface-stabilized polymer, in an anhydrous medium.

Preferably, said particles i) are not, or only slightly, crosslinked

Polymer particles i)

The particle(s) of the oily dispersion (A) of the invention preferably consists of one or more polymer(s) chosen from:

a) ethylenic homopolymers of (C ₁ -C ₄ )(alkyl)acrylate (C ₁ -C ₄ )alkyl, preferably ethylenic homopolymers of (meth)acrylate (C ₁ -C ₄ )alkyl;

b) ethylenic copolymers of (C ₁ -C ₄ )(alkyl)acrylate (C ₁ -C ₄ )alkyl, preferably (meth)acrylate (C ₁ -C ₄ )alkyl, and of acid (C ₁ -C ₄ (alkyl) acrylic, preferably ethylenic copolymers of (meth) acrylate (C ₁ -C ₄ ) alkyl and (meth) acrylic acid;

c) ethylenic copolymers of (C ₁ -C ₄ )(alkyl)acrylate of (C ₁ -C ₄ )alkyl, preferably ethylenic copolymers of (meth)acrylate of (C ₁ -C ₄ )alkyl; and

Preferably, the particle(s) i) consists of an ethylenic polymer core derived from homopolymers a) or from copolymers b), or c) as defined previously.

The particle(s) i) consists of an ethylenic polymer core derived from homopolymers a) or from copolymers b) or c), as defined above, and ii) from one or more agents ( s) polymeric surface stabilizer(s) derived from homopolymer d) and the copolymers e) defined below.

According to a preferred embodiment of the invention, the polymer constituting the particles i) is an ethylenic acrylate homopolymer a) resulting from the polymerization of identical monomer of formula (I):

Formula (I) in which:

- R representing a hydrogen atom or a (C ₁ -C ₄ )alkyl group such as methyl, and

- R′ representing a (C ₁ -C ₄ )alkyl group such as methyl or ethyl, preferably C ₁ -C ₄ alkyl acrylate such as methyl acrylate.

According to another particular embodiment of the invention, the polymer constituting the particles i) is an ethylenic acrylate copolymer b) resulting from the polymerization:

- at least one monomer of formula (I) as defined above, preferably C ₁ -C ₄ alkyl acrylate such as methyl acrylate and ethyl acrylate; and

- a monomer of formula (II)

Formula (II) in which

- R as defined previously, in particular acrylic acid.

According to this embodiment, the amount of acrylic acid varies from 0.1 to 15% by weight relative to the weight of monomers of the particle i) and the polymer of the particles i) is in particular a copolymer resulting from the copolymerization of acrylic acid with one or more C ₁ -C ₄ alkyl (meth)acrylate monomers chosen in particular from methyl (meth)acrylate, ethyl (meth)acrylate.

According to another preferred embodiment of the invention, the polymer constituting the particles i) is an ethylenic acrylate copolymer b) resulting from the polymerization:

- of at least two different monomers: of formula (I) as defined above, preferably C ₁ -C ₄ alkyl acrylate such as methyl acrylate and ethyl acrylate; and

- optionally a monomer of formula (II) as defined previously.

According to a particular embodiment of the invention, the polymer of the particles i) is a polymer derived from C ₁ -C ₄ alkyl (meth)acrylate monomers. The monomers are preferably chosen from methyl (meth)acrylate, ethyl (meth)acrylate, n-propyl (meth)acrylate, isopropyl (meth)acrylate, n-(meth)acrylate, -butyl, tert-butyl (meth)acrylate and more preferably chosen from methyl (meth)acrylate, ethyl (meth)acrylate.

Advantageously, a C ₁ -C ₄ alkyl acrylate monomer is used. Preferably, the monomers are chosen from methyl acrylate and ethyl acrylate.

Also, a C ₁ -C ₄ alkyl methacrylate monomer is particularly used. Preferably, the monomers are chosen from methyl methacrylate and ethyl methacrylate, more particularly methyl methacrylate.

According to a particular embodiment of the invention, the oily dispersion (A) comprises from 2 to 40% by weight, in particular 4 to 25 in particular from 5 to 20% by weight of monomers (C ₁ -C ₆ )(alkyl ) (C ₉ -C ₂₂ )alkyl acrylate included in d) or e) in the liquid hydrocarbon fatty substance(s) iii), relative to the total weight of polymers contained in said dispersion.

According to an advantageous embodiment of the invention, the oily dispersion (A) comprises from 60% to 98% by weight, in particular from 75 to 96% of monomers a) to c) relative to the total weight of polymers contained in said dispersion.

Preferably, the monomers capable of forming the polymeric core of the particle i) are chosen from the monomers insoluble in the hydrocarbon-based liquid fatty substance(s) iii) of the dispersion (A). The insoluble monomers preferably represent 100% by weight of the total weight of the monomers forming the polymer core of the particle.

According to one embodiment of the invention, the particle or particles i), comprise b) ethylenic copolymers of b1) (C ₁ -C ₄ )(alkyl)acrylate of (C ₁ -C ₄ )alkyl, and of b2 ) ethylenic monomers comprising one or more carboxy, anhydride, phosphoric acid, sulphonic acid and/or aryl groups such as benzyl.

More particularly, the ethylenic monomers comprising one or more carboxy, anhydride, phosphoric acid, sulphonic acid and/or aryl groups are chosen from (1), (2), (3), (4) and (5):

(1) R ¹ (R ² )C=C(R ³ )-Acid with R ¹ , R ² and R ³ representing a hydrogen atom or a CO ₂ H, H ₂ PO ₄ , or SO ₃ H group, and Acid representing a carboxy, phosphoric acid, sulphonic acid, preferably carboxy, group, it being understood that R ¹ , R ² and R ³ cannot simultaneously represent a hydrogen atom;

(2) H ₂ C=C(R)-C(O)-N(R')-Alk-Acid with R and R', which are identical or different, represent a hydrogen atom, or a group (C ₁ -C ₄ ) alkyl; Alk represents a (C ₁ -C ₆ )alkylene group optionally substituted by at least one group chosen from Acid as defined previously and hydroxy; and Acid is as defined above, preferably carboxy or sulphonic acid;

(3) Ar-(R ^a )C=C(R ^b )-R ^c with R ^a , R ^b and R ^c , identical or different, representing a hydrogen atom or a (C ₁ -C ₄ )alkyl group , and Ar represents an aryl group, preferably benzyl, optionally substituted by at least one CO ₂ H, H ₂ PO ₄ or SO ₃ H acid group, preferably substituted by a CO ₂ H or SO ₃ H group,

(4) Maleic anhydride of formula (4a) and (4b):

Formulas (4b) and (4b) in which R _a , R _b and R _c , identical or different, representing a hydrogen atom or a (C ₁ -C ₄ )alkyl group, preferably R _a , R _b , and R _c represent a hydrogen atom. Preferably, an ethylenically unsaturated anhydride monomer of the invention is of formula (4b) and more preferably is maleic anhydride; and

(5) H ₂ C=C(R)-C(O)-OH with R representing a hydrogen atom, or a (C ₁ -C ₄ )alkyl group such as methyl.

Preferably b2) is a (C ₁ -C ₄ )(alkyl)acrylic acid, more particularly b) is (are) copolymers of (meth)acrylate of (C ₁ -C ₄ )alkyl and of acid (meth) acrylic.

More preferably b2) is chosen from crotonic acid, maleic anhydride, itaconic acid, fumaric acid, maleic acid, styrenesulfonic acid, vinylbenzoic acid, vinylphosphoric acid, acrylic, methacrylic acid, acrylamiopropanesulfonic acid, acrylamidoglycolic acid, acrylic acid and their salts, even more preferentially b2) represents acrylic acid.

The polymer particle or particles i) of the dispersion (A) preferably have a number-average size ranging from 5 and 500 nm, in particular ranging from 10 to 400 nm, and better still ranging from 20 to 300 nm.

The final particle size is preferably greater than 100 nm. In particular a number-average size ranging from 100 nm and 500 nm; more particularly ranging from 150 nm to 400 nm, even more particularly ranging from 160 nm to 300 nm.

The average particle size is determined by conventional methods known to those skilled in the art. A MALVERN model NanoZS laser particle sizer (particularly well suited to submicronic dispersions) is used to measure the size distribution of these samples. The operating principle of this type of device is based on dynamic light scattering (DLS), also called quasi-elastic light scattering (QELS) or photon correlation spectroscopy (PCS).

The sample is pipetted into a single-use plastic tank (4 transparent sides, 1 cm side and 4 mL capacity) placed in the measuring cell. The data are analyzed on the basis of a cumulant method which leads to a unimodal particle size distribution characterized by an average diameter in intensity d(nm) and a polydispersity factor in sizes Q. The results can also be expressed in the form of data statistics such as D10; D50 (median), D90 and mode.

Other granulometry techniques make it possible to obtain this type of information, such as analysis of individual particle tracking (Nanoparticle Tracking Analysis, NTA), laser diffraction (DL), acoustic extinction spectroscopy (AES) , Doppler velocimetry by spatial filter or image analysis.

The stabilizing agent(s) ii)

The dispersion (A) according to the invention also comprises one or more stabilizing agents ii). Preferably only one type of stabilizer ii) is used in the invention.

According to a particular embodiment of the invention, the stabilizing agent(s) ii) are chosen from d) ethylenic homopolymers of (C ₁ -C ₆ )(alkyl)acrylate (C ₉ -C ₂₂ )alkyl in particular homopolymers ethylenic (C ₁ -C ₄ )(alkyl)acrylate (C ₉ -C ₁₈ )alkyl, preferably ethylenic homopolymers (meth)acrylate (C ₉ -C ₂₂ )alkyl and more preferably ethylenic homopolymers (meth) (C ₉ -C ₁₈ )alkyl acrylate

More particularly, the stabilizing agent(s) ii) consists of ethylenic polymers chosen from d) ethylenic homopolymers resulting from the polymerization of monomers of formula H₂C=C(R)-C(O)-O-R’’ with R representing a hydrogen atom or group (C₁-VS₄)alkyl such as methyl, and R’’ representing a group (C₉-VS₂₂) preferably alkyl (VS₉-VS₁₈)alkyl. Preferably R'' represents isodecyl, lauryl, stearyl, hexadecyl or behenyl.

According to another particular embodiment of the invention, the stabilizing agent(s) ii) are chosen from e) ethylenic copolymers of (C ₁ -C ₆ )(alkyl)acrylate, (C ₉ -C ₂₂ )alkyl and of ( C ₁ -C ₄ )(alkyl)acrylate of (C ₁ -C ₄ )alkyl. Particularly (C ₁ -C ₄ )(alkyl)acrylate (C ₉ -C ₁₈ )alkyl and (C ₁ -C ₄ )(alkyl)acrylate (C ₁ -C ₄ )alkyl. Preferably copolymers of (C ₉ -C ₁₈ )alkyl (meth)acrylate and (C ₁ -C ₄ )alkyl (meth)acrylate.

More preferably, the stabilizing agent(s) ii) are chosen from ethylenic copolymers e) of formula (III) and (IV):

Formulas (III) and (IV) in which

- R, identical or different, representing a hydrogen atom or a (C ₁ -C ₄ )alkyl group such as methyl,

- identical or different R' representing a (C ₁ -C ₄ )alkyl group such as methyl or ethyl, and

- R’’ representing a group (C₉-VS₂₂) preferably alkyl (VS₁₀-VS₂₀)alkyl and in particular (C_2n)alkyl with integer n = 5, 6, 7, 8, 9, or 10. Preferably R'' represents isodecyl, lauryl, stearyl, hexadecyl, behenyl.

Preferably, the stabilizing agent(s) ii) are chosen from copolymers derived from monomers chosen from isodecyl (meth)acrylates, lauryl, stearyl, hexadecyl, behenyl, and C alkyl (meth)acrylate ₁ -C ₄ preferably methyl (meth)acrylate.

More preferably, the stabilizing agent(s) ii) are chosen from copolymers derived from monomers chosen from isodecyl, lauryl, stearyl and hexadecyl (meth)acrylates, and C ₁ -C alkyl (meth)acrylate ₄ preferably methyl (meth) acrylate or ethyl (meth) acrylate.

In particular, the stabilizing agent ii) is chosen from homopolymers of isodecyl (meth)acrylate, lauryl (meth)acrylate, stearyl (meth)acrylate, hexadecyl (meth)acrylate, behenyl (meth)acrylate and random copolymers of isodecyl, lauryl, stearyl, hexadecyl, behenyl (meth)acrylate and C1-C4 alkyl (meth)acrylate; preferably present in a weight ratio of (meth)acrylate of isodecyl, lauryl, stearyl, hexadecyl, behenyl / (meth)acrylate C1-C4 alkyl greater than 4.

Advantageously, said weight ratio ranges from 5 to 15, more preferably said weight ratio ranges from 5.5 to 12.

According to another embodiment, the stabilizing agent(s) ii) are chosen from ethylenic copolymers e) resulting from the polymerization of a monomer of formula (IV) as defined previously and two different monomers of formula (III) such as previously defined.

Preferably, the stabilizing agent(s) ii) are chosen from copolymers resulting from the polymerization of 1 monomer chosen from isodecyl, lauryl, stearyl, hexadecyl, behenyl (meth)acrylates, and 2 C alkyl (meth)acrylates ₁ -C ₄ preferably different from methyl and ethyl acrylate. In particular, the weight ratio of isodecyl, lauryl, stearyl, hexadecyl, behenyl (meth)acrylates/C ₁ -C ₄ alkyl (meth)acrylate is greater than 4. Advantageously, said weight ratio ranges from 5 to 15, more preferably said weight ratio ranges from 5.5 to 11.

According to another embodiment, the stabilizing agent(s) ii) are chosen from ethylenic copolymers e) resulting from the polymerization of a monomer of formula (III) as defined in the preceding claim and two different monomers of formula (IV ) as previously defined.

Preferably, the stabilizing agent(s) ii) are chosen from copolymers resulting from the polymerization of 2 different monomers chosen from isodecyl, lauryl, stearyl, hexadecyl, behenyl (meth)acrylates, and from 1 alkyl (meth)acrylate monomer C ₁ -C ₄ preferably methyl and ethyl acrylate, in particular the weight ratio of isodecyl, lauryl, stearyl, hexadecyl, behenyl (meth)acrylates / C ₁ -C alkyl (meth)acrylate ₄ greater than 4.

Advantageously, said weight ratio ranges from 4.5 to 10, more preferably said weight ratio ranges from 5 to 8.

According to a particular embodiment of the invention, the oily dispersion (A) comprises from 2 to 40% by weight, in particular 4 to 25% by weight, in particular from 5.5 to 20% by weight of monomers (C ₁ -C ₆ (alkyl) acrylate (C ₉ -C ₂₂ ) alkyl included in d) or e) in the liquid hydrocarbon fatty substance(s) iii), relative to the total weight of polymers contained in the said dispersion.

According to one embodiment of the invention, the stabilizing agent(s) ii) are chosen from copolymers resulting from the polymerization of 2 different monomers chosen from isodecyl, lauryl, stearyl, hexadecyl, behenyl (meth)acrylates, and from 1 monomer of C ₁ -C ₄ alkyl (meth)acrylate, preferably of methyl and ethyl acrylate, in particular the weight ratio of isodecyl, lauryl, stearyl, hexadecyl, behenyl (meth)acrylates / (meth)acrylate of C ₁ -C ₄ alkyl in dispersion (A) is less than 1. Particularly, said weight ratio ranges from 0.05 to 0.5, more preferably said weight ratio ranges from 0.08 to 0.2 in the scatter (A).

For these random copolymers, the defined weight ratio makes it possible to obtain a stable polymer dispersion, in particular after storage for 7 days at room temperature.

Advantageously, the weight ratio of ii) stabilizing agent(s) and i) of particle(s) of polymer(s) present in the dispersion (A) is between 0.5 and 2, preferably 0, 8 to 1.2 and better equal to 1.

In particular, the weight ratio of ii) stabilizing agent(s) and i) of particle(s) of polymer(s) is less than 1, relative to the total weight of polymers.

According to a particular embodiment of the invention, the stabilizing agent(s) ii) are present in a content ranging from 2 to 40% by weight, in particular from 3 to 30% by weight, preferably from 4 to 25% by weight relative to the weight of polymer(s) present in the dispersion (A).

Preferably, the stabilizing agent(s) ii) and the particle(s) i) have a number-average molecular weight (Mn) of between 1,000 and 1,000,000 g/mol, in particular between 5,000 and 500,000 g/mol and even better between 10,000 and 300,000 g/mol.

The dispersion (A) according to the invention is ultimately formed of polymer particles, of fairly large diameter, i.e. preferably greater than 100 nm, and leads to film-forming, shiny deposits that are resistant to fatty substances at room temperature (25° C.). , which are particularly interesting for make-up applications.

The liquid hydrocarbon fatty substance(s) iii)

The dispersion of polymer particles (A) according to the invention also comprises iii) one or more hydrocarbon-based liquid fatty substances in which said particles are dispersed.

The liquid hydrocarbon fatty substances iii) are in particular chosen from hydrocarbons and C ₆ -C ₁₆ or more than 16 carbon atoms up to 60 carbon atoms, preferably between C ₆ and C ₁₆ , and in particular alkanes , oils of animal origin, oils of vegetable origin, glycerides or fluorinated oils of synthetic origin, fatty alcohols, fatty acid and/or fatty alcohol esters, non-silicone waxes, silicones .

It is recalled that within the meaning of the invention, the alcohols, esters and fatty acids have more particularly one or more hydrocarbon groups, linear or branched, saturated or unsaturated, comprising 6 to 60 carbon atoms, optionally substituted, in particular by one or more hydroxyl groups (in particular 1 to 4). If they are unsaturated, these compounds can comprise one to three carbon-carbon double bonds, conjugated or not.

As regards the C ₆ -C ₁₆ alkanes, the latter are linear, branched, possibly cyclic. By way of example, mention may be made of hexane, dodecane, isoparaffins such as isohexadecane, isodecane and isododecane. The linear or branched hydrocarbons with more than 16 carbon atoms can be chosen from paraffin oils, petroleum jelly, petroleum jelly, polydecenes, hydrogenated polyisobutene such as Parléam®.

Among the liquid hydrocarbon fatty substances iii) having an overall solubility parameter according to the HANSEN solubility space of less than or equal to 20 (MPa) ^1/2 , mention may be made of oils, which can be chosen from natural or synthetic oils , hydrocarbon, optionally fluorinated, optionally branched, alone or as a mixture.

According to a very advantageous embodiment, the dispersion (A) according to the invention comprises one or more liquid fatty substances which is (are) one or more hydrocarbon oil(s). The hydrocarbon oil(s) may be volatile or non-volatile.

According to a preferred embodiment of the invention, the hydrocarbon-based liquid fatty substance(s) are hydrocarbon-based oils which are volatile or are a mixture of different volatile oils more preferably chosen from isododecane and octyldodecanol .

According to another particular embodiment, the liquid hydrocarbon fatty substance(s) iii) are a mixture of a volatile oil and a non-volatile oil.

As volatile silicone oils, mention may be made of volatile linear or cyclic silicone oils, in particular those having a viscosity of  8 centistokes (cSt) (8 x 10 ^-6 m ² /s), and having, in particular, from 2 to 10 silicon atoms, and in particular, from 2 to 7 silicon atoms, these silicones optionally comprising alkyl or alkoxy groups having from 1 to 10 carbon atoms. As volatile silicone oil that can be used in the invention, mention may be made, in particular, of dimethicones with a viscosity of 5 and 6 cSt, octamethyl cyclotetrasiloxane, decamethyl cyclopentasiloxane, dodecamethyl cyclohexasiloxane, heptamethyl hexyltrisiloxane, heptamethyloctyl trisiloxane, l hexamethyl disiloxane, octamethyl trisiloxane, decamethyl tetrasiloxane, dodecamethyl pentasiloxane, and mixtures thereof.

As non-volatile silicone oils, mention may be made of non-volatile, linear or cyclic polydimethylsiloxanes (PDMS); polydimethylsiloxanes comprising alkyl, alkoxy and/or phenyl groups, pendent or at the end of the silicone chain, groups having from 2 to 24 carbon atoms; phenyl silicones such as phenyl trimethicones, phenyl dimethicones, phenyl trimethylsiloxy diphenyl siloxanes, diphenyl dimethicones, diphenyl methyldiphenyl trisiloxanes, 2-phenyl ethyl trimethyl-siloxysilicates and pentaphenyl silicone oils.

The hydrocarbon oil can be chosen from:

hydrocarbon oils having from 8 to 14 carbon atoms, and in particular:

branched C ₈ -C ₁₄ alkanes such as C ₈ -C ₁₄ isoalkanes of petroleum origin (also called isoparaffins) such as isododecane (also called 2,2,4,4,6-pentamethylheptane), isodecane , and for example the oils sold under the trade names Isopars' or Permetyls,

linear alkanes, for example such as n-dodecane (C12) and n-tetradecane (C14) sold by Sasol respectively under the references PARAFOL 12-97 and PARAFOL 14-97, as well as mixtures thereof, the undecane-tridecane mixture , the mixtures of n-undecane (C11) and n-tridecane (C13) obtained in examples 1 and 2 of application WO 2008/155059 from the company Cognis, and mixtures thereof.

short chain esters (with 3 to 8 carbon atoms in total) such as ethyl acetate, methyl acetate, propyl acetate, n-butyl acetate

hydrocarbon oils of plant origin such as triglycerides consisting of esters of fatty acids and glycerol, the fatty acids of which may have chain lengths varying from C ₄ to C ₂₄ , the latter possibly being linear or branched, saturated or unsaturated; these oils are in particular triglycerides of heptanoic acid or octanoic acid, or alternatively wheat germ, sunflower, grapeseed, sesame, corn, apricot, castor, shea, avocado, olive, soy, sweet almond, palm, rapeseed, cotton, hazelnut, macadamia, jojoba, alfalfa, poppy, pumpkin, sesame, squash, rapeseed, blackcurrant, evening primrose, millet, barley, quinoa, rye, safflower, bancoulier, passionflower, muscat rose; shea butter; or caprylic/capric acid triglycerides such as those sold by Stéarineries Dubois or those sold under the names Miglyol 810 ^® , 812 ^® and 818 ^® by Dynamit Nobel,

synthetic ethers having 10 to 40 carbon atoms;

linear or branched hydrocarbons, of mineral or synthetic origin such as petroleum jelly, polydecenes, hydrogenated polyisobutene such as Parleam®, squalane, paraffin oils, and mixtures thereof,

esters such as oils of formula R ¹ C(O)-OR ² in which R ¹ represents the residue of a linear or branched fatty acid containing from 1 to 40 carbon atoms and R ² represents a hydrocarbon chain, in particular branched, containing 1 to 40 carbon atoms provided that R ¹ + R ² is ³ 10, such as Purcellin's oil (cetostearyl octanoate), isopropyl myristate, isopropyl palmitate, alcohol benzoates in C ₁₂ to C ₁₅ , hexyl laurate, diisopropyl adipate, isononyl isononanoate, 2-ethyl-hexyl palmitate, isostearyl isostearate, 2-hexyl-decyl laurate, 2-octyl-decyl palmitate, 2-octyl-dodecyl myristate, heptanoates, octanoates, decanoates or ricinoleates of alcohols or polyalcohols such as propylene glycol dioctanoate; hydroxylated esters such as isostearyl lactate, di-isostearyl malate, 2-octyl-dodecyl lactate; polyol esters and pentaerythritol esters,

fatty alcohols which are liquid at room temperature with a branched and/or unsaturated carbon chain having from 12 to 26 carbon atoms, such as octyl dodecanol, isostearyl alcohol, oleic alcohol, 2-hexyldecanol, 2-butyloctanol, and 2-undecylpentadecanol.

Dispersion (A) in addition to the liquid hydrocarbon fatty substance, may comprise a silicone oil. If silicone oil is in the dispersion (A), preferably it is in an amount which does not exceed 10% by weight relative to the weight of the dispersion (A), more particularly in an amount less than 5% and more preferably 2%.

In particular, the dispersion (A) comprises at least one hydrocarbon-based liquid fatty substance iii) chosen from:

vegetable oils formed by esters of fatty acids and polyols, in particular triglycerides, such as sunflower, sesame or rapeseed, macadamia, soybean oil, sweet almond oil, calophyllum , palm, grapeseed, corn, arara, cotton, apricot, avocado, jojoba, olive or cereal germ;

linear, branched or cyclic esters having more than 6 carbon atoms, in particular 6 to 30 carbon atoms; and in particular isononyl isononanoate;

and more particularly the esters of formula R ^d -C(O)-OR ^e in which R ^d represents the residue of a higher fatty acid comprising from 7 to 19 carbon atoms and R ^e represents a hydrocarbon chain comprising from 3 to 20 carbon atoms, such as palmitates, adipates, myristates and benzoates, especially diisopropyl adipate and isopropyl myristate;

hydrocarbons and in particular linear, branched and/or cyclic, volatile or non-volatile alkanes, such as C ₅ -C ₆₀ isoparaffins, which may be volatile, such as isododecane, Parleam (hydrogenated polyisobutene), isohexadecane, cyclohexane, or the 'ISOPARs'; or paraffin oils, petroleum jelly, or hydrogenated polyisobutylene;

ethers having 6 to 30 carbon atoms;

ketones having 6 to 30 carbon atoms;

aliphatic fatty monoalcohols having 6 to 30 carbon atoms, the hydrocarbon chain not comprising any substitution group, such as oleic alcohol, decanol, dodecanol, octadecanol, octyldodecanol and linoleic alcohol;

polyols having 6 to 30 carbon atoms, such as hexylene glycol; and

their mixtures.

Preferably, the dispersion (A) comprises at least one hydrocarbon-based liquid fatty substance iii) chosen from:

- vegetable oils formed by esters of fatty acids and polyols, in particular triglycerides,

- the esters of formula R ^d -C(O)-OR ^e in which R ^d represents the residue of a higher fatty acid containing 7 to 19 carbon atoms and R ^e represents a hydrocarbon chain containing 3 to 20 carbon atoms ,

- linear or branched C ₈ -C ₆₀ alkanes, volatile or non-volatile;

- cyclic, non-aromatic, C ₅ -C ₁₂ alkanes; volatile or non-volatile;

- ethers having 7 to 30 carbon atoms;

- ketones having 8 to 30 carbon atoms;

- aliphatic fatty monoalcohols having 12 to 30 carbon atoms, the hydrocarbon chain not comprising any substitution group, and

- their mixtures.

Advantageously, the liquid hydrocarbon fatty substance(s) of the invention are apolar, i.e. formed solely of carbon and hydrogen atoms.

The hydrocarbon-based liquid fatty substance(s) are preferably chosen from hydrocarbon-based oils having from 8 to 14 carbon atoms, in particular volatile, more particularly the apolar oils, described previously.

Preferably, the liquid hydrocarbon fatty substance(s) iii) of the invention are isododecane.

According to another advantageous embodiment of the invention, the liquid hydrocarbon fatty substance or substances are a mixture of non-volatile oil and volatile oil, preferably the mixture comprises isododecane as volatile oil. In particular, in the mixture, the non-volatile oil is a phenyl silicone oil preferably chosen from pentaphenyl silicone oils.

Without this being limiting, in general, the dispersion according to the invention can be prepared in the following way:

- The polymerization is carried out in " dispersion " in a non-aqueous medium, that is to say by precipitation of the polymer during formation, with protection of the particles formed with one or more stabilizing agents ii), preferably a single type of stabilizing agent ii) chosen from d) and e) as defined above.

- In a first step, the stabilizing polymer (or stabilizing agent ii)) is prepared by mixing the monomer or monomers constituting the stabilizing polymer d) or e), with v) a radical initiator, in a solvent called synthetic solvent, and by polymerizing these monomers; then

- In a second step, the monomers constituting the polymer of the particles i) are added to the stabilizing polymer formed in the previous step and the polymerization of these added monomers is carried out in the presence of the radical initiator.

When the non-aqueous medium is a non-volatile hydrocarbon liquid fatty substance iii), the polymerization can be carried out in an apolar organic solvent (synthetic solvent) then add the non-volatile hydrocarbon liquid fatty substance (which must be miscible with said synthetic solvent ) and selectively distilling the synthesis solvent. The cosmetic active ingredient(s) chosen from f) dyes and/or pigments; g) active ingredients for caring for keratin materials, in particular the skin, and h) UV filters as well as j) mixtures thereof can be added during the first step. According to another variant, the said cosmetic active ingredient(s) is (are) added during the second stage or after the second stage.

A synthesis solvent is therefore chosen such that the monomers of the polymeric stabilizing agent(s) ii), and the radical initiator v), are soluble therein, and that the polymer particles i) obtained are insoluble therein so that they precipitate therein. during their training.

In particular, the synthetic solvent which is apolar organic is chosen, preferably chosen from alkanes such as heptane, cyclohexane or isododecane, preferably isododecane.

When the non-aqueous medium is a hydrocarbon liquid fatty substance iii) volatile, the polymerization can be carried out directly in said oil which therefore also acts as a synthesis solvent. The monomers must also be soluble therein, as well as the radical initiator, and the polymer of the particles i) obtained must be insoluble therein.

The monomers are preferably present in the synthesis solvent, before polymerization, in a proportion of 15% to 45% by weight. All of the monomers can be present in the solvent before the start of the reaction, or part of the monomers can be added as the polymerization reaction progresses.

The polymerization is preferentially carried out in the presence v) of one or more radical initiators which can be any initiator known to those skilled in the art for radical polymerization such as peroxidic or azo initiators, oxidation-reducing (redox) couples, and photochemical initiators.

We can cite in particular those of the type:

- peroxide in particular chosen from tert-Butyl peroxy-2-ethylhexanoate: Trigonox 21S; 2,5-dimethyl-2,5-di(2-ethylhexanoylperoxy)hexane: Trigonox 141; tert-butyl peroxypivalate: Trigonox 25C75 from AkzoNobel; Where

- azo in particular chosen from AIBN: azobisisobutyronitrile; V50: 2,2'-azo-bis(2-amidinopropane) dihydrochloride.

The polymerization is preferably carried out at a temperature ranging from 70 to 110° C. and at atmospheric pressure.

The polymer particles i) are stabilized at the surface, when they form during the polymerization, thanks to the stabilizer ii).

The stabilization can be carried out by any known means, and in particular by direct addition of the stabilizer ii), during the polymerization.

The stabilizer ii) is preferably also present in the mixture before polymerization of the monomers of the polymer of the particles i). However, it is also possible to add it continuously, in particular when the monomers of the particles i) are also continuously added.

It is possible to use from 4 to 30% by weight of the stabilizing agent(s) relative to the total weight of monomers used (stabilizing agents ii) + polymer particles i)), and preferably from 4.5 to 20% by weight .

The dispersion of polymer particles (A) advantageously comprises from 30 to 65% by weight of dry matter, relative to the total weight of said dispersion, and preferably from 40 to 60% by weight relative to the total weight of said dispersion.

The dispersion (A) according to the invention preferably comprises a content of dry matter (or active matter) of particle polymers i) + dispersing polymers ii) ranging from 10 to 80% by weight, relative to the total weight of the composition (A), and preferably ranging from 20 to 60% by weight, in particular 30 to 50% by weight, relative to the total weight of the dispersion (A).

According to a preferred embodiment of the invention, the dispersion (A) according to the invention is an anhydrous composition.

According to another embodiment of the present invention, the dispersion (A) is in an inverse emulsion, i.e. of the water-in-oil (W/O) or “water-in-oil (W/O)” type. In this case the composition comprises one or more surfactants, preferably nonionic. The inverse emulsions of (A) are preferably chosen when the dispersions (A) are intended for makeup and in particular for makeup of the eyelashes and/or the eyebrows.

In a particular method of preparation, the random stabilizing polymer ii) is prepared in a first step. This stabilizing polymer is soluble in an apolar organic solvent of the alkane type such as isododecane.

Then, in a second step, the particles of the polymer i) are synthesized in the presence of the stabilizing polymer ii).

Preferably, a solution of stabilizing polymer ii) is prepared in the liquid hydrocarbon fatty substance(s) iii) for the final dispersion, and the polymerization of the monomers which form the core of the particle is carried out, in the presence of this stabilizer ii) .

The stabilizing polymer ii) can be prepared by radical polymerization optionally in the presence of polymerization initiator v) as defined above.

In a second step, it is possible to polymerize the monomers which form the core of the particle i), in the presence of said stabilizing polymer ii). This second step can be a conventional radical polymerization.

The dispersions are produced in the presence of one or more liquid hydrocarbon fatty substances iii) preferably in an apolar organic solvent, in particular of the alkane type such as in isododecane, according to an industrially realistic process.

The dispersions according to the invention are therefore formed of polymeric particles, with a diameter generally preferably greater than 100 nm, and will lead to film-forming deposits, which are shiny and resistant to fatty substances at the observation temperature (25° C.).

These dispersions are described in particular in application WO 2020260659.

Preferably, the total content of dispersion(s) of particles (A), present in the composition according to the invention, ranges from 0.1 to 20% by weight, and more preferably from 0.5 to 10% by weight, better still from 1 to 8% by weight relative to the total weight of the composition. By “content of dispersion(s) of particles”, is meant within the meaning of the present invention the sum of the contents of polymer(s) i), of stabilizing polymer(s) ii) and of hydrocarbon liquid fatty substances iii ).

Cationic polymer

The composition according to the present invention further comprises one or more cationic polymers.

Within the meaning of the present invention, the expression “cationic polymer” denotes any non-silicone polymer (not comprising a silicon atom) containing cationic groups and/or groups which can be ionized into cationic groups.

The cationic polymers which can be used preferably have a weight-average molar mass (Mw) of between 500 and 5×10 ⁶ approximately, preferably between 10 ³ and 3×10 ⁶ approximately.

Among the cationic polymers, mention may more preferably be made of:
(1) homopolymers or copolymers derived from acrylic or methacrylic esters or amides and comprising at least one of the units of the following formula:

in which :
- R ₃ , identical or different, denote a hydrogen atom or a CH ₃ radical;
- A, identical or different, represent a divalent alkyl group, linear or branched, of 1 to 6 carbon atoms, preferably 2 or 3 carbon atoms or a hydroxyalkyl group of 1 to 4 carbon atoms;
- R ₄ , R ₅ , R ₆ , identical or different, represent an alkyl group having from 1 to 18 carbon atoms or a benzyl radical; preferably an alkyl group having 1 to 6 carbon atoms;
- R ₁ and R ₂ , identical or different, represent a hydrogen atom or an alkyl group having from 1 to 6 carbon atoms, preferably methyl or ethyl;
- X denotes an anion derived from a mineral or organic acid such as a methosulfate anion or a halide such as chloride or bromide.

The copolymers of family (1) can also contain one or more units deriving from comonomers which can be chosen from the family of acrylamides, methacrylamides, diacetone acrylamides, acrylamides and methacrylamides substituted on the nitrogen by lower alkyls (C ₁ -C ₄ ), acrylic or methacrylic acid esters, vinyllactams such as vinylpyrrolidone or vinylcaprolactam, vinyl esters.

Among these copolymers of family (1), mention may be made of:
- copolymers of acrylamide and dimethylaminoethyl methacrylate quaternized with dimethyl sulphate or with a dimethyl halide, such as that sold under the name HERCOFLOC by the company HERCULES,
- copolymers of acrylamide and methacryloyloxyethyltrimethylammonium chloride, such as those sold under the name BINA QUAT P 100 by the company CIBA GEIGY,
- the copolymer of acrylamide and methacryloyloxyethyltrimethylammonium methosulfate, such as that sold under the name RETEN by the company HERCULES,
- vinylpyrrolidone/dialkylaminoalkyl acrylate or methacrylate copolymers, quaternized or not, such as the products sold under the name "GAFQUAT" by the company ISP, such as for example "GAFQUAT 734" or "GAFQUAT 755" or else the products called "COPOLYMER 845 , 958 and 937". These polymers are described in detail in French patents 2,077,143 and 2,393,573;
- dimethylaminoethyl methacrylate/vinylcaprolactam/vinylpyrrolidone terpolymers, such as the product sold under the name GAFFIX VC 713 by the company ISP;
- vinylpyrrolidone/methacrylamidopropyldimethylamine copolymers, such as those marketed under the name STYLEZE CC 10 by ISP;
- quaternized vinylpyrrolidone/dimethylaminopropyl methacrylamide copolymers, such as the product sold under the name "GAFQUAT HS 100" by the company ISP,
- polymers, preferably crosslinked, of methacryloyloxyalkyl (C ₁ -C ₄ ) trialkyl (C ₁ -C ₄ ) ammonium salts such as the polymers obtained by homopolymerization of dimethylaminoethyl methacrylate quaternized with methyl chloride, or by copolymerization of acrylamide with dimethylaminoethyl methacrylate quaternized with methyl chloride, the homo- or copolymerization being followed by cross-linking with an olefinically unsaturated compound, in particular methylene bisacrylamide. It is more particularly possible to use an acrylamide/methacryloyloxyethyltrimethylammonium chloride copolymer, crosslinked or not (for example 20/80 by weight), especially in the form of a dispersion comprising 50% by weight of the said copolymer in mineral oil. This dispersion is in particular marketed under the name "SALCARE® SC 92" by the company CIBA. It is also possible to use a homopolymer of methacryloyloxyethyltrimethylammonium chloride, crosslinked or not, in particular dispersed at about 50% by weight in mineral oil or in a liquid ester. These dispersions are marketed under the names “SALCARE® SC 95” and “SALCARE® SC 96” by the company CIBA.

(2) cationic polysaccharides, in particular celluloses and gums of cationic galactomannans. Among the cationic polysaccharides, mention may more particularly be made of cellulose ether derivatives comprising quaternary ammonium groups, cationic cellulose copolymers or cellulose derivatives grafted with a water-soluble quaternary ammonium monomer and cationic galactomannan gums.

Cellulose ether derivatives comprising quaternary ammonium groups are described in particular in FR1492597, and mention may be made of the polymers marketed under the name "UCARE POLYMER JR" (JR 400 LT, JR 125, JR 30M) or "LR" (LR 400, LR 30M) by the AMERCHOL company. These polymers are also defined in the CTFA dictionary as quaternary ammoniums of hydroxyethylcellulose having reacted with an epoxide substituted by a trimethylammonium group.

Cationic cellulose copolymers or cellulose derivatives grafted with a water-soluble quaternary ammonium monomer are described in particular in patent US4131576, and mention may be made of hydroxyalkylcelluloses, such as hydroxymethyl-, hydroxyethyl- or hydroxypropyl celluloses grafted in particular with a salt methacryloylethyl trimethylammonium, methacrylamidopropyl trimethylammonium, dimethyl-diallylammonium. The marketed products corresponding to this definition are more particularly the products sold under the name "Celquat L 200" and "Celquat H 100" by the National Starch Company.

Mention may also be made of quaternized (poly)hydroxyethylcelluloses modified with groups comprising at least one fatty chain, such as alkyl, arylalkyl, alkylaryl groups comprising at least 8 carbon atoms, or mixtures thereof. The alkyl radicals carried by the quaternized celluloses or hydroxyethylcelluloses above preferably contain from 8 to 30 carbon atoms. The aryl radicals preferably designate the phenyl, benzyl, naphthyl or anthryl groups. Examples of quaternized alkylhydroxyethyl celluloses with C ₈ -C ₃₀ fatty chains may be given, such as the products QUATRISOFT LM 200 ^® , QUATRISOFT LM-X 529-18-A ^® , QUATRISOFT LM-X 529-18-B ® (C ₁₂ alkyl) and QUATRISOFT LM-X 529-8 ^® (C ₁₈ alkyl) sold by AMERCHOL, the products CRODACEL QM ^® , CRODACEL QL ^® (C ₁₂ alkyl) and CRODACEL QS ^® (C 12 alkyl) C ₁₈ ) sold by the company CRODA and the product SOFTCAT SL 100 ^® sold by the company AMERCHOL.

Cationic galactomannan gums are described more particularly in patents US3589578 and US4031307, and mention may be made of guar gums comprising cationic trialkylammonium groups. For example, guar gums modified with a salt (for example a chloride) of 2,3-epoxypropyl trimethylammonium are used. Such products are marketed in particular under the names JAGUAR C13 S, JAGUAR C 15, JAGUAR C 17 or JAGUAR C162 by the company RHODIA.

(3) polymers consisting of piperazinyl units and divalent alkylene or hydroxyalkylene radicals with straight or branched chains, optionally interrupted by oxygen, sulfur or nitrogen atoms or by aromatic or heterocyclic rings, as well as the products of oxidation and/or quaternization of these polymers.

(4) water-soluble polyaminoamides, prepared in particular by polycondensation of an acid compound with a polyamine; these polyaminoamides can be cross-linked with an epihalohydrin, a diepoxide, a dianhydride, an unsaturated dianhydride, a bis-unsaturated derivative, a bis-halohydrin, a bis-azetidinium, a bis-haloacyldiamine, a bis-alkyl halide or else by an oligomer resulting from the reaction of a bifunctional compound reactive with a bis-halohydrin, a bis-azetidinium, a bis-haloacyldiamine, a bis-alkyl halide, d an epilhalohydrin, a diepoxide or a bis-unsaturated derivative; the crosslinking agent being used in proportions ranging from 0.025 to 0.35 mole per amine group of the polyaminoamide; these polyaminoamides can be alkylated or if they contain one or more tertiary amine functions, quaternized.

(5) derivatives of polyaminoamides resulting from the condensation of polyalkylene polyamines with polycarboxylic acids followed by alkylation by bifunctional agents. Mention may be made, for example, of adipic acid-diacoylaminohydroxyalcoyldialoylene triamine polymers in which the alkyl radical contains from 1 to 4 carbon atoms and preferably denotes methyl, ethyl or propyl. Among these derivatives, mention may more particularly be made of the adipic acid/dimethylamino hydroxypropyl/diethylene triamine polymers sold under the name “Cartaretine F, F4 or F8” by the company Sandoz.

(6) polymers obtained by reaction of a polyalkylene polyamine comprising two primary amine groups and at least one secondary amine group with a dicarboxylic acid chosen from diglycolic acid and saturated aliphatic dicarboxylic acids having from 3 to 8 carbon atoms; the molar ratio between the polyalkylene polyamine and the dicarboxylic acid preferably being between 0.8:1 and 1.4:1; the resulting polyaminoamide being reacted with epichlorohydrin in a molar ratio of epichlorohydrin to secondary amine group of the polyaminoamide preferably between 0.5:1 and 1.8:1. Polymers of this type are in particular marketed under the name "Hercosett 57" by the company Hercules Inc. or else under the name "PD 170" or "Delsette 101" by the company Hercules in the case of the adipic acid copolymer /epoxypropyl/diethylene-triamine.

(7) alkyl diallyl amine or dialkyl diallyl ammonium cyclopolymers such as homopolymers or copolymers comprising, as the main constituent of the chain, units corresponding to the following formulas:

in which
- k and t are equal to 0 or 1, the sum k + t being equal to 1;
- R ₁₂ denotes a hydrogen atom or a methyl radical;
- R ₁₀ and R ₁₁ , independently of one another, denote a C ₁ -C ₆ alkyl group, a C ₁ -C ₅ hydroxyalkyl group, a C ₁ -C ₄ amidoalkyl group; or alternatively R ₁₀ and R ₁₁ can denote, together with the nitrogen atom to which they are attached, a heterocyclic group such as piperidinyl or morpholinyl; R ₁₀ and R ₁₁ , independently of one another, preferably denote a C ₁ -C ₄ alkyl group;
- Y ^- is an anion such as bromide, chloride, acetate, borate, citrate, tartrate, bisulfate, bisulfite, sulfate, phosphate.

Mention may more particularly be made of the homopolymer of salts (for example chloride) of dimethyldiallylammonium, for example sold under the name "MERQUAT 100" by the company NALCO, and the copolymers of salts (for example chloride) of diallyldimethylammonium and of acrylamide marketed in particular under the name "MERQUAT 550" or "MERQUAT 7SPR".

(8) diquaternary ammonium polymers comprising recurring units of the following formula:

in which :
- R ₁₃ , R ₁₄ , R ₁₅ and R ₁₆ , which are identical or different, represent aliphatic, alicyclic or arylaliphatic radicals comprising from 1 to 20 carbon atoms or C ₁ -C ₁₂ hydroxyalkylaliphatic radicals,
or alternatively R ₁₃ , R ₁₄ , R ₁₅ and R ₁₆ , together or separately, constitute with the nitrogen atoms to which they are attached heterocycles optionally comprising a second heteroatom other than nitrogen,
or alternatively R ₁₃ , R ₁₄ , R ₁₅ and R ₁₆ represent a linear or branched C ₁ -C ₆ alkyl radical substituted by a nitrile, ester, acyl, amide or
-CO-OR ₁₇ -D or -CO-NH-R ₁₇ -D where R ₁₇ is an alkylene and D a quaternary ammonium group;
- A ₁ and B ₁ represent divalent polymethylene groups comprising from 2 to 20 carbon atoms, linear or branched, saturated or unsaturated, and which may contain, linked to or intercalated in the main chain, one or more aromatic rings, or one or several oxygen or sulfur atoms or sulfoxide, sulfone, disulfide, amino, alkylamino, hydroxyl, quaternary ammonium, ureido, amide or ester groups; and
- X ^- denotes an anion derived from a mineral or organic acid;
it being understood that A ₁ , R ₁₃ and R ₁₅ can form with the two nitrogen atoms to which they are attached a piperazine ring;
in addition, if A ₁ denotes a linear or branched, saturated or unsaturated alkylene or hydroxyalkylene radical, B ₁ can also denote a group
(CH ₂ ) _n -CO-D-OC-(CH ₂ ) _p -, with n and p, identical or different, being integers ranging from 2 to 20, and D denoting:
a) a glycol residue of formula -OZO-, where Z denotes a linear or branched hydrocarbon radical or a group corresponding to one of the following formulas: -(CH ₂ CH ₂ O) _x -CH ₂ CH ₂ - and - [CH ₂ CH(CH ₃ )O] _y -CH ₂ CH(CH ₃ )- where x and y denote an integer from 1 to 4, representing a defined and unique degree of polymerization or any number from 1 to 4 representing an average degree of polymerization;
b) a bis-secondary diamine residue such as a piperazine derivative;
c) a bis-primary diamine residue of formula -NH-Y-NH- where Y denotes a linear or branched hydrocarbon radical, or else the divalent radical -CH ₂ -CH ₂ -SS-CH ₂ -CH ₂ -;
d) a ureylene group of formula -NH-CO-NH-.

Preferably, X ^- is an anion such as chloride or bromide. These polymers have a number average molar mass (Mn) generally between 1000 and 100000.

Mention may more particularly be made of polymers which consist of recurring units corresponding to the formula:

in which R ₁ , R ₂ , R ₃ and R ₄ , which are identical or different, denote an alkyl or hydroxyalkyl radical having from 1 to 4 carbon atoms, n and p are integers ranging from 2 to 20, and X ^- is an anion derived from a mineral or organic acid.
A particularly preferred compound is that consisting of units for which R ₁ , R ₂ , R ₃ and R ₄ represent a methyl radical, n=3, p=6 and X=Cl, called Hexadimethrine chloride according to the INCI nomenclature (CTFA).

(9) quaternary polyammonium polymers comprising units of the following formula:


in which :
- R ₁₈ , R ₁₉ , R ₂₀ and R ₂₁ , which are identical or different, represent a hydrogen atom or a methyl, ethyl, propyl, β-hydroxyethyl, β-hydroxypropyl or -CH ₂ CH ₂ (OCH ₂ CH ₂ ) _p OH, where p is equal to 0 or to an integer between 1 and 6, provided that R ₁₈ , R ₁₉ , R ₂₀ and R ₂₁ do not simultaneously represent a hydrogen atom,
- r and s, identical or different, are whole numbers between 1 and 6,
- q is equal to 0 or an integer between 1 and 34,
- X ^- denotes an anion such as a halide,
- A denotes a divalent radical of a dihalide or preferably represents -CH ₂ -CH ₂ -O-CH ₂ -CH ₂ -.

Mention may be made, for example, of the products “Mirapol® A 15”, “Mirapol® AD1”, “Mirapol® AZ1” and “Mirapol® 175” sold by the company Miranol.

(10) Quaternary polymers of vinylpyrrolidone and vinylimidazole, such as for example the products marketed under the names Luviquat® FC 905, FC 550 and FC 370 by the company B.A.S.F.

(11) Polyamines such as Polyquart® H sold by Cognis, referenced under the name "POLYETHYLENEGLYCOL (15) TALLOW POLYAMINE" in the CTFA dictionary.

(12) polymers comprising in their structure:
- one or more reasons corresponding to the following formula (A):


- and optionally one or more units corresponding to the following formula (B):

In other words, these polymers can be chosen in particular from homo- or copolymers comprising one or more units derived from vinylamine and optionally one or more units derived from vinylformamide.

Preferably, these cationic polymers are chosen from polymers comprising, in their structure, from 5 to 100% by moles of units corresponding to formula (A) and from 0 to 95% by moles of units corresponding to formula (B) , preferably from 10 to 100% by moles of units corresponding to formula (A) and from 0 to 90% by moles of units corresponding to formula (B).

These polymers can be obtained for example by partial hydrolysis of polyvinylformamide. This hydrolysis can take place in an acidic or basic medium.

The weight-average molecular mass of said polymer, measured by light diffraction, can vary from 1000 to 3,000,000 g/mole, preferably from 10,000 to 1,000,000 and more particularly from 100,000 to 500,000 g/mole.

The polymers comprising units of formula (A) and optionally units of formula (B) are in particular sold under the name LUPAMIN by the company BASF, such as for example, and in a non-limiting manner, the products offered under the name LUPAMIN 9095 , LUPAMIN 5095, LUPAMIN 1095, LUPAMIN 9030 (or LUVIQUAT 9030) and LUPAMIN 9010.

13) cationic polyvinyllactam polymers.

Such polymers are for example described in patent application WO-00/68282.

As cationic poly(vinyllactam) polymers according to the invention, use is made in particular of vinylpyrrolidone/dimethylaminopropylmethacrylamide/dodecyldimethylmethacrylamidopropylammonium tosylate terpolymers, vinylpyrrolidone/dimethylaminopropylmethacrylamide/cocoyldimethyl-methacrylamidopropylammonium tosylate terpolymers, vinylpyrrolidone/dimethylaminopropylmethacrylamidopropylammonium chloride or -propylammonium.

(14) and the above polymer blends.

Other cationic polymers which can be used in the context of the invention are cationic proteins or hydrolysates of cationic proteins, polyalkyleneimines, in particular polyethyleneimines, polymers comprising vinylpyridine or vinylpyridinium units, condensates of polyamines and of epichlorohydrin, quaternary polyureylenes and chitin derivatives such as chitosan.

Preferably, the cationic polymers are chosen from those of families (1), (2), (7), (8) and (12), preferentially of families (1), (2) and (7).

Among the cationic polymers mentioned above, it is possible to preferably use cationic polysaccharides, in particular quaternized (poly)hydroxyethylcelluloses modified by groups comprising at least one fatty chain, such as alkyl, arylalkyl, alkylaryl groups comprising at least 8 atoms of carbon, or mixtures thereof. More particularly, the cationic polymer is chosen from hydroxyethyl celluloses which have reacted with a trimethyl ammonium epoxide and a lauryl dimethyl ammonium epoxide (INCI name POLYQUATERNIUM-67).

The content of the cationic polymer(s), present in the composition according to the invention, preferably ranges from 0.05 to 15% by weight, preferably from 0.5 to 10% by weight, and more preferably from 1 to 8% by weight, relative to the total weight of the composition

The weight ratio between the total content of dispersion(s) of particles (A) and the total content of cationic polymer(s), present in the composition according to the invention, preferably ranges from 0.1 to 10, preferably from 0.2 to 5, better still from 0.25 to 3.

Anionic polymer

The composition according to the present invention further comprises one or more anionic polymers.

Within the meaning of the present invention, the expression “anionic polymer” denotes any polymer containing anionic groups and/or groups which can be ionized into anionic groups, and not containing cationic groups and/or groups which can be ionized into cationic groups.

By way of anionic polymers, mention may be made of polymers comprising groups derived from carboxylic, sulphonic or phosphoric acids, and having a number-average molecular mass of between 500 and 5,000,000.

The carboxylic groups are provided by unsaturated monoacid or dicarboxylic acid monomers such as those corresponding to formula (I):

in which
n is an integer from 0 to 10,

A denotes a methylene group, optionally linked to the carbon atom of the unsaturated group or to the neighboring methylene group when n is greater than 1, via a heteroatom such as oxygen or sulfur,

R ₁ denotes a hydrogen atom, a phenyl or benzyl group,

R ₂ denotes a hydrogen atom, an alkyl group comprising from 1 to 4 carbon atoms or carboxyl,

R ₃ denotes a hydrogen atom, an alkyl group comprising from 1 to 4 carbon atoms, a –CH ₂ -COOH, phenyl or benzyl group.

In formula (I) above, the alkyl group comprising from 1 to 4 carbon atoms can in particular designate the methyl and ethyl groups.

The preferred anionic polymers containing carboxylic or sulphonic groups are:

A) copolymers of acrylic or methacrylic acid or their salts, including copolymers of acrylic acid and acrylamide and copolymers of methacrylic acid/acrylic acid/ethyl acrylate/methyl methacrylate, in particular AMERHOLD DR 25 marketed by the company AMERCHOL, and sodium salts of polyhydroxycarboxylic acids. Mention may also be made of methacrylic acid/ethyl acrylate copolymers, in particular in aqueous dispersion, such as LUVIFLEX SOFT and LUVIMER MAE marketed by the company BASF.

B) Copolymers of acrylic or methacrylic acids with a monoethylenic monomer such as ethylene, styrene, vinyl esters, acrylic or methacrylic acid esters, optionally grafted onto a polyalkylene glycol such as polyethylene glycol, and optionally cross-linked. Such polymers are described in particular in French Patent 1,222,944 and German Application No. 2,330,956, copolymers of this type comprising in their chain an optionally N-alkylated and/or hydroxyalkylated acrylamide unit as described in particular in applications of Luxembourg patents 75370 and 75371. Mention may also be made of copolymers of acrylic acid and of C ₁ -C ₄ alkyl methacrylate.

As another anionic fixing polymer of this family, mention may also be made of the branched block anionic polymer butyl acrylate/acrylic acid/methacrylic acid sold under the name Fixate G-100 L by the company LUBRIZOL (INCI name AMP-ACRYLATES/ALLYL METHACRYLATE COPOLYMER ).

C) copolymers derived from crotonic acid such as those comprising vinyl acetate or propionate units in their chain, and optionally other monomers such as allylic or methallyl ester, vinyl ether or vinyl ester of a saturated carboxylic acid, linear or branched, with a long hydrocarbon chain, such as those containing at least 5 carbon atoms, these polymers possibly being grafted and crosslinked, or else a vinyl, allyl or methallyl ester of an α- or β-cyclic carboxylic acid. Such polymers are described inter alia in French patent numbers 1,222,944, 1,580,545, 2,265,782, 2,265,781, 1,564,110 and 2,439,798. Commercial products falling into this class are resins 28 29 30, 26 13 14 and 28 13 10 sold by NATIONAL STARCH.

Mention may also be made, as copolymer derived from crotonic acid, of the crotonic acid/vinyl acetate/vinyl tert-butylbenzoate terpolymers and in particular MEXOMERE PW supplied by the company CHIMEX.

D) Polymers derived from maleic, fumaric, itaconic acids or anhydrides with vinyl esters, vinyl ethers, vinyl halides, phenylvinyl derivatives, acrylic acid and its esters; these polymers can be esterified. Such polymers are described in particular in US patents 2,047,398, 2,723,248, 2,102,113, patent GB 839,805, and in particular those sold under the names GANTREZ® AN or ES by the company ISP.

Polymers also falling into this class are copolymers of maleic, citraconic, itaconic anhydrides and an allylic or methallyl ester optionally comprising an acrylamide, methacrylamide group, an α-olefin, acrylic or methacrylic esters, acrylic or methacrylic acids or vinylpyrrolidone in their chain, the anhydride functions are monoesterified or monoamidified. These polymers are for example described in French patents 2,350,384 and 2,357,241 of the applicant.

E) Polyacrylamides comprising carboxylate groups.

F) Polymers comprising sulphonic groups. These polymers can be polymers comprising vinylsulfonic, styrene-sulfonic, naphthalene-sulfonic, acrylamido-alkylsulfonic, sulfoisophthalate units and their salts.

These polymers can be chosen in particular from:

- salts of polyvinylsulfonic acid having a molecular mass of between approximately 1,000 and 100,000, as well as copolymers with an unsaturated comonomer such as acrylic or methacrylic acids, and their esters, as well as acrylamide or its derivatives, vinyl ethers and vinylpyrrolidone;

- salts of polystyrene sulphonic acid, sodium salts, having a molecular mass of approximately 500,000 and approximately 100,000. These compounds are described in patent FR 2198719;

- polyacrylamide sulphonic acid salts such as those mentioned in US Pat. No. 4,128,631;

H) Anionic polyurethanes, which may comprise silicone grafts and silicones with hydrocarbon grafts.

By way of examples of fixing polyurethane, mention may in particular be made of the dimethylolpropionic acid/isophorone-diisocyanate/neopentylglycol/polyesterdiol copolymer (also known as polyurethane-1, INCI name) sold under the Luviset® PUR brand by the company BASF , the dimethylol-propionic acid/isophorone-diisocyanate/neopentylglycol/polyesterdiols/silicone diamine copolymer (also known under the name of polyurethane-6, INCI name) sold under the brand name Luviset® Si PUR A by the company BASF.

As other anionic polyurethane, AVALURE UR 450 can also be used.

It is also possible to use polymers containing sulphoisophthalate groups, such as the polymers AQ55 and AQ48 marketed by the company EASTMAN.

Mention may also be made of crosslinked or non-crosslinked homopolymers or copolymers of acrylic or methacrylic acid and their salts, crosslinked or non-crosslinked homopolymers of 2-acrylamido-2-methyl-propane sulfonic acid and their salts and crosslinked or non-crosslinked copolymers, in particular copolymers of 2-acrylamido-2-methyl-propane sulphonic acid and acrylamide, copolymers of 2-acrylamido-2-methyl-propane sulphonic acid and vinylpyrrolidone, copolymers of 2-acrylamido-2 -sulfonic methyl-propane and alkyl (meth)acrylate C1-C30, optionally oxyalkylenated, preferably C8-C22 and their salts, ammonium acrylate homopolymers or ammonium acrylate copolymers and of acrylamide alone or in mixtures.

Among the crosslinked homopolymers of acrylic or methacrylic acid, mention may be made of those crosslinked with an allyl alcohol ether of the sugar series, such as for example the products sold under the names CARBOPOLS 980, 981, 954, 2984 and 5984 by the company NOVEON or the products sold under the names SYNTHALEN M and SYNTHALEN K by company 3 VSA. These polymers have the INCI name Carbomer.

The crosslinked (meth)acrylic acid copolymers can be copolymers of (meth)acrylic acid and of C1-C6 alkyl (meth)acrylate, such as the polymer sold under the name AQUA SF1 by the company NOVEON.

The crosslinked homopolymers of 2-acrylamido-2-methyl-propane sulphonic acid are in particular sold under the name HOSTACERIN ^AMPS® by the company CLARIANT.

Among the crosslinked copolymers of 2-acrylamido-2-methyl-propanesulfonic acid and partially or completely neutralized acrylamide, mention may be made in particular of the product described in example 1 of document EP 503 853 and one may refer to this document with respect to these polymers.

The composition may likewise comprise ammonium acrylate homopolymers or copolymers of ammonium acrylate and acrylamide.

As examples of ammonium acrylate homopolymers, mention may be made of the product sold under the name MICROSAP PAS 5193 by the company HOECHST. Among the copolymers of ammonium acrylate and acrylamide, mention may be made of the product sold under the name BOZEPOL C NOUVEAU or the product PAS 5193 sold by the company HOECHST. Reference may in particular be made to documents FR 2 416 723, US 2798053 and US 2923692 as regards the description and the preparation of such compounds.

The anionic polymers can also be chosen from anionic polysaccharides such as in particular acacia gums, carrageenans in particular lambda carrageenans.

According to the invention, the anionic polymers are preferably chosen from acrylic acid copolymers such as the acrylic acid/ethyl acrylate/N-tertiobutylacrylamide terpolymer sold under the name ULTRAHOLD STRONG® by the company BASF, methacrylic acid copolymers /ethyl acrylate, in particular in aqueous dispersion, such as LUVIFLEX SOFT and LUVIMER MAE marketed by BASF, copolymers derived from crotonic acid such as vinyl acetate/vinyl tert-butylbenzoate/crotonic acid terpolymers and crotonic acid/vinyl acetate/vinyl neododecanoate terpolymers sold under the name Résine 28-29-30 by the company NATIONAL STARCH, polymers derived from maleic, fumaric, itaconic acids or anhydrides with vinyl esters, vinyl ethers , vinyl halides, phenylvinyl derivatives, acrylic acid and its esters such as methyl vinyl ether/monomaleic anhydride copolymer sterilized product sold under the name GANTREZ® ES 425 by the company ISP, LUVISET SI PUR, MEXOMERE PW, elastomeric or non-elastomeric anionic polyurethanes, polymers with sulfoisophthalate groups, anionic polymers of family B), and even more particularly one preferably uses the branched block anionic polymer butyl acrylate/acrylic acid/methacrylic acid sold under the name Fixate G-100 L by the company LUBRIZOL (INCI name AMP-ACRYLATES/ALLYL METHACRYLATE COPOLYMER), the homo or copolymers of acid 2 -acrylamido-2-methyl-propane sulphonic, crosslinked or not, or their salts.

Use will preferably be made of homo or copolymers of 2-acrylamido-2-methyl-propane sulfonic acid, crosslinked or not, or their salts, more preferably cross-linked homopolymers of 2-acrylamido-2-methyl-propane sulfonic acid or their salts such as HOSTACERIN AMPS ^® from CLARIANT (INCI name AMMONIUM POLYACRYLOYLDIMETHYL TAURATE), anionic polysaccharides, in particular carrageenans.

The content of the anionic polymer(s), present in the composition according to the invention, preferably ranges from 0.05 to 15% by weight, more preferably from 0.1 to 10% by weight, and better still from 0.2 to 8% by weight, from 0.5 to 5% by weight relative to the total weight of the composition.

The weight ratio between the total content of dispersion(s) of particles (A) and the total content of anionic polymer(s), present in the composition according to the invention, preferably ranges from 0.1 to 15, preferentially from 0.2 to 10, better still from 0.25 to 5.

According to the invention, the weight ratio of the cationic polymer(s)/anionic polymer(s) preferably ranges from 10/90 to 90/10, better still from 20/80 to 80/20 , in particular from 30/70 to 70/30, and more preferably from 40/60 to 60/40 .

Preferably, the composition according to the present invention is aqueous. The water is present in a content generally greater than or equal to 30% by weight, relative to the total weight of the composition.

Preferably, the water content, present in the composition of the invention, ranges from 30 to 98% by weight, preferably from 50 to 98% by weight, and more preferably from 65 to 95% by weight, relative to the total weight of the composition.

In addition to the water mainly contained in the aqueous phase, the composition according to the present invention may optionally comprise one or more organic solvents, or mixtures thereof.

By way of organic solvent, mention may be made, for example, of alkanols, linear or branched, C ₂ to C ₄ , such as ethanol and isopropanol; glycerol; polyols and polyol ethers such as 2-butoxyethanol, propylene glycol, hexylene glycol, dipropylene glycol, propylene glycol monomethyl ether, monoethyl ether and diethylene glycol monomethyl ether, as well as aromatic alcohols or ethers such as benzyl alcohol or phenoxyethanol, and mixtures thereof.

The pH of the composition according to the invention generally varies from 1.5 to 12, preferably from 2 to 8, preferably from 2.5 to 7.5.

The pH of the composition can be adjusted to the desired value by means of basifying agents or acidifying agents usually used. Among the basifying agents, mention may be made, by way of examples, of ammonia, alkanolamines, mineral or organic hydroxides. Among the acidifying agents, mention may be made, by way of examples, of mineral or organic acids such as hydrochloric acid, orthophosphoric acid, sulfuric acid, carboxylic acids such as for example acetic acid, tartaric, citric acid, lactic acid, sulphonic acids.

The composition according to the present invention may optionally also comprise one or more thickeners other than the cationic and anionic polymers above.

The composition according to the present invention may optionally also comprise one or more silicones other than the non-aqueous medium present in the dispersion(s) of particles and of the polymers described above .

The silicones which can be used in the present invention can be solid or liquid, volatile or non-volatile.

The silicones which may be used may be soluble or insoluble in the composition according to the invention; they can be in the form of oil, wax, resin or gum; silicone oils and gums are preferred.

Silicones are in particular described in detail in Walter NOLL's work "Chemistry and Technology of Silicones" (1968), Academie Press.

The volatile silicones can be chosen from those having a boiling point of between 60 and 260° C. (at atmospheric pressure), more particularly from:

i) cyclic polydialkylsiloxanes comprising from 3 to 7 silicon atoms, preferably 4 to 5, such as

- octamethylcyclotetrasiloxane and decamethylcyclopentasiloxane.

Mention may be made of the products marketed under the name "VOLATILE SILICONE 7207" by UNION CARBIDE or "SILBIONE 70045 V 2" by RHODIA, "VOLATILE SILICONE 7158" by UNION CARBIDE, "SILBIONE 70045 V 5" by RHODIA.

- cyclocopolymers of the dimethylsiloxane/methylalkylsiloxane type with a chemical structure:

Mention may be made of "VOLATILE SILICONE FZ 3109" marketed by the company UNION CARBIDE.

- mixtures of cyclic silicones with organic compounds derived from silicon, such as the mixture of octamethylcyclotetrasiloxane and tetratrimethylsilylpentaerythritol (50/50) and the mixture of octamethylcyclotetrasiloxane and oxy-1,1'-(hexa-2, 2,2',2',3,3'-trimethylsilyloxy) bis-neopentane;

ii) linear polydialkylsiloxanes having 2 to 9 silicon atoms, which generally have a viscosity less than or equal to 5×10 ⁻⁶ m ² /s at 25° C., such as decamethyltetrasiloxane.

Other silicones falling into this class are described in the article published in Cosmetics and toiletries, Vol. 91, Jan. 76, p. 27-32 - TODD & BYERS "Volatile Silicone fluids for cosmetics"; mention may be made of the product marketed under the name “SH 200” by the company TORAY SILICONE.

Among the non-volatile silicones, mention may be made, alone or as a mixture, of polydialkylsiloxanes and in particular polydimethylsiloxanes (PDMS), polydiarylsiloxanes, polyalkylarylsiloxanes, silicone gums and resins, as well as organopolysiloxanes (or organomodified polysiloxanes, or even organomodified silicones) which are polysiloxanes comprising in their structure one or more organofunctional groups, generally attached via a hydrocarbon group, and preferably chosen from aryl groups, amino groups, alkoxy groups and polyoxyethylenated groups, or polyoxypropylene.

The organomodified silicones can be polydiarylsiloxanes, in particular polydiphenylsiloxanes, and polyalkylarylsiloxanes functionalized with the organofunctional groups mentioned above. The polyalkylarylsiloxanes are particularly chosen from polydimethyl/methylphenylsiloxanes, linear and/or branched polydimethyl/diphenylsiloxanes.

Among the organomodified silicones, mention may be made of organopolysiloxanes comprising:

- polyoxyethylene and/or polyoxypropylene groups possibly comprising C ₆ -C ₂₄ alkyl groups such as dimethicone-copolyols, and in particular those marketed by DOW CORNING under the name DC 1248 or SILWET ^® L 722, L 7500 oils , L 77, L 711 from UNION CARBIDE; or alternatively (C ₁₂ )alkyl-methicone-copolyols, and in particular those marketed by the company DOW CORNING under the name Q2-5200;

- substituted or unsubstituted amino groups, in particular C ₁ -C _{4 aminoalkyl groups;} mention may be made of the products marketed under the name GP4 Silicone Fluid and GP7100 by the company GENESEE, or under the names Q2-8220 and DC929 or DC939 by the company DOW CORNING;

- thiol groups, such as the products marketed under the names "GP 72 A" and "GP 71" from GENESEE;

- alkoxylated groups, such as the product marketed under the name "SILICONE COPOLYMER F-755" by SWS SILICONES and ABIL ^WAX® 2428, 2434 and 2440 by the company GOLDSCHMIDT;

- hydroxyl groups, such as polyorganosiloxanes with a hydroxyalkyl function;

- acyloxyalkyl groups such as the polyorganosiloxanes described in US-A-4957732.

- anionic groups of the carboxylic acid type, as for example described in EP186507, or of the alkyl-carboxylic type such as the product X-22-3701E from the company SHIN-ETSU; or alternatively of the 2-hydroxyalkylsulfonate or 2-hydroxyalkylthiosulfate type, such as the products marketed by the company GOLDSCHMIDT under the names “ABIL® ^S201 ” and “ ^ABIL® S255”.

- hydroxyacylamino groups, such as the polyorganosiloxanes described in application EP342834; mention may be made, for example, of the product Q2-8413 from the company DOW CORNING.

The silicones may also be chosen from polydialkylsiloxanes, among which mention may be made mainly of polydimethylsiloxanes containing trimethylsilyl end groups. Among these polydialkylsiloxanes, mention may be made of the following commercial products:

- ^SILBIONE® oils of the 47 and 70 047 series or ^MIRASIL® oils marketed by RHODIA such as, for example, oil 70 047 V 500 000;

- the oils of the MIRASIL ^® series marketed by the company RHODIA;

- oils of the 200 series from DOW CORNING, such as DC200 having a viscosity of 60,000 mm ² /s;

- VISCASIL ^® oils from GENERAL ELECTRIC and certain oils from the SF series (SF 96, SF 18) from GENERAL ELECTRIC.

Mention may also be made of polydimethylsiloxanes containing dimethylsilanol end groups known under the name of dimethiconol (CTFA), such as the oils of the 48 series from the company RHODIA.

In this class of polydialkylsiloxanes, mention may also be made of the products marketed under the names “ABIL ^WAX® 9800 and 9801” by the company GOLDSCHMIDT which are polydialkyl (C1-C20) siloxanes.

Products which can be used more particularly in accordance with the invention are mixtures such as:

- the mixtures formed from a polydimethylsiloxane hydroxylated at the end of the chain, or dimethiconol (CTFA) and a cyclic polydimethylsiloxane also called cyclomethicone (CTFA) such as the product Q2-1401 marketed by the company DOW CORNING.

The polyalkylarylsiloxanes are particularly chosen from polydimethyl/methylphenylsiloxanes, linear and/or branched polydimethyl/diphenylsiloxanes with a viscosity ranging from 1.10 ^-5 to 5.10 ^-2 m²/s at 25°C.

Among these polyalkylarylsiloxanes, mention may be made of the products marketed under the following names:

- SILBIONE ^® oils of the 70 641 series from RHODIA;

- the oils of the RHODORSIL ^® 70 633 and 763 series from RHODIA;

- DOW CORNING 556 COSMETIC GRAD FLUID oil from DOW CORNING;

- BAYER's PK series silicones such as the PK20 product;

- the silicones of the PN and PH series from BAYER such as the PN1000 and PH1000 products;

- certain oils from GENERAL ELECTRIC's SF series such as SF 1023, SF 1154, SF 1250, SF 1265.

The composition according to the present invention may optionally also comprise one or more additives, different from the compounds of the invention and among which mention may be made of nonionic, cationic, anionic, amphoteric or zwitterionic surfactants and mixtures thereof , fatty substances different from non-aqueous medium of the dispersion(s) of particles and silicones previously described, non-ionic polymers, or mixtures thereof, anti-dandruff agents, anti-seborrheic agents, vitamins and pro-vitamins including panthenol, sunscreens, pigments mineral or organic agents, sequestering agents, plasticizing agents, solubilizing agents, acidifying agents, opacifying or pearlescent agents, antioxidants, hydroxy acids, perfumes, preservatives, pigments and ceramides.

According to the invention, the composition also comprises one or more additional salts, different from the compounds of the invention.

By “additional salts”, is meant within the meaning of the present invention the salts of alkali metals such as sodium chloride; alkaline earth salts such as CaCl ₂ ; organic acid salts such as sodium citrate, sodium lactate, sodium acetate, and mixtures thereof; more preferably the salts of alkali metals and in particular sodium chloride.

Of course, those skilled in the art will take care to choose this or these possible additional compounds in such a way that the advantageous properties inherently attached to the composition according to the invention are not, or substantially not, altered by the addition(s) envisaged. .

The above additives may generally be present in an amount comprised for each of them between 0 and 20% by weight, relative to the total weight of the composition.

The present invention also relates to a cosmetic treatment method, preferably a method for treating human keratin fibers such as the hair, in particular a styling method, that is to say fixing and/or shaping, keratin fibers, in particular human keratin fibers such as the hair, comprising the application to said keratin fibers of a composition as defined previously.

The shaping process according to the invention can be carried out on dry or wet, preferably wet, keratin fibres.

At the end of the process, the keratin fibers are advantageously rinsed with water before being dried or left to dry.

In a preferred embodiment of the invention, the method comprises:

1-a step of application to the keratin fibers of a composition comprising:

a-one or more dispersions of particles (A) as described above,

b-one or more cationic polymers, and

c-one or more anionic polymers followed by:

2-a keratin fiber rinsing step, preferably with water.

The present invention finally relates to the use of a composition as described above for the cosmetic treatment, and in particular for styling keratin fibres, in particular human keratin fibers such as the hair.

More particularly, the present invention relates to the use of a composition as described above for styling hair, that is to say shaping and/or fixing (maintaining) the hairstyle.

The following examples serve to illustrate the invention without, however, being of a limiting nature.

EXAMPLES

Example 1 for the preparation of dispersion (A)

An example of synthesis is presented below for obtaining an oily dispersion with a stabilizing agent in C ₉ -C ₂₂ alkyl (meth)acrylate. For this example, stearyl methacrylate was used in combination with methyl acrylate for the stabilizing arm and methyl acrylate was retained for the core of the particle.

The oily dispersions are formed as a whole (polymeric particles i) + polymeric stabilizing agent ii)) at 94.5% by weight of Methyl Acrylate and 5.5% of Stearyl Methacrylate. The synthesis of these oily dispersions was carried out in a 1 liter controlled reactor. The synthesis is carried out in two steps:

- During a first step, the Stearyl Methacrylate is polymerized in Isododecane in the presence of a small quantity of Methyl Acrylate and a radical initiator (T21S). In the first step, the Stearyl Methacrylate / Methyl Acrylate mass ratio is 85/15.

- During the second step, the rest of the methyl acrylate is poured in the presence of isododecane and radical initiator (T21S).

The ratios used to obtain the stabilizer and the core are summarized in Table 3: Specific ratios in the stabilizer and the core for the dispersion

Examples of compositions

Example 1

Composition (A1) was prepared from ingredients whose contents, expressed as mass percentage of active ingredient, relative to the total weight of the composition, are mentioned in the table below.

In % by weight of active ingredient A1
AMMONIUM POLYACRYLOYL DIMETHYL TAURATE
(HOSTACERIN AMPS®) 0.84 POLYQUATERNIUM-67 (SOFTCAT POLYMER SL-100) 1.16 sodium chloride 2 Dispersion according to the preparation example at 44.5% by weight in isododecane 1.75 my pH 3.5 Water qsp 100

The locks treated with composition (A1) exhibit good fixation and good hold of the fixation.

In addition, the locks have a feel that is neither sticky nor greasy: they have a very good smooth feel and a nice homogeneity. The wicks show no residue.

Examples 2 and 3

Compositions 2 and 3 were prepared from the ingredients below (% active matter).

2 3 AMMONIUM POLYACRYLOYL DIMETHYL TAURATE (HOSTACERIN AMPS®) 1.61 AMP-ACRYLATES /ALLYL METHACRYLATE COPOLYMER(FIXATE G100 L by LUBRIZOL) 3.18 VINYLAMINE/VINYLFORMAMIDE COPOLYMER (LUVIQUAT 9030 from BASF) 2.82 POLYQUATERNIUM-67 (SOFTCAT POLYMER SL-100) 1.39 sodium chloride 2 10 Dispersion according to example 1 of preparation at 44.5% by weight in isododecane 3.93 (1.75 ma) 3.93 (1.75 ma) pH agent qs pH 3.5 7 Water qsp 100g 100g

The locks treated with compositions 2 to 6 exhibit good fixation and good hold of the fixation. The locks have a feel that is neither sticky nor greasy: they have a very good smooth feel and a nice homogeneity. The wicks show no residue.

Examples 4 to 6

Compositions 4 to 6 were prepared from the ingredients below (% active matter).

4 5 6 AMMONIUM POLYACRYLOYL DIMETHYL TAURATE (HOSTACERIN AMPS®) 0.91 CARRAGEENAN (SATIAGUM VPC 430 from CARGILL) 3.78 HYDROXYPROPYL GUAR HYDROXYPROPYL TRIMONIUM CHLORIDE (JAGUAR C162 from SOLVAY) 1.09 CHITOSAN
(KIONUTRIME CSG from KITOZYME 2.22 0.75 ACACIA SENEGAL GUM 5.25 sodium chloride 10 5 10 Dispersion according to example 1 of preparation at 44.5% by weight in isododecane 1.75 my 1.75 my 1.75 my pH agent qs pH 3.5 3.5 3.5 Water qsp 100g 100g 100g

The locks treated with compositions 4 to 6 exhibit good fixation and good hold of the fixation. The locks have a feel that is neither sticky nor greasy: they have a very good smooth feel and a nice homogeneity. The wicks show no residue.

Claims (21)

Composition comprising:
1) one or more preferably anhydrous oily dispersions (A) comprising:
i) one or more particle(s) comprising one or more polymer(s) chosen from:
a) ethylenic homopolymers of (C ₁ -C ₄ )(alkyl)acrylate (C ₁ -C ₄ )alkyl, preferably (meth)acrylate (C ₁ -C ₄ )alkyl;
b) ethylenic copolymers of b1) (C ₁ -C ₄ )(alkyl)acrylate, (C ₁ -C ₄ )alkyl, and of b2) ethylenic monomers comprising one or more carboxy, anhydride, phosphoric acid, sulphonic acid and /or aryl such as benzyl; in particular b2) is a (C ₁ -C ₄ )(alkyl)acrylic acid, more particularly the copolymers of (meth)acrylate of (C ₁ -C ₄ )alkyl and of (meth)acrylic acid;
c) ethylenic copolymers of (C ₁ -C ₄ )(alkyl)acrylate (C ₁ -C ₄ )alkyl, preferably (meth)acrylate (C ₁ -C ₄ )alkyl; and (C ₁ -C ₄ )(alkyl)acrylate (C ₁ -C ₄ )alkyl,
ii) one or more polymeric stabilizing agent(s) chosen from:
d) ethylenic (C ₁ -C ₆ )(alkyl)acrylate (C ₉ -C ₂₂ )alkyl homopolymers, preferably (C ₉ -C ₂₂ )alkyl ethylenic (meth)acrylate homopolymers; and
e) ethylenic copolymers of (C ₁ -C ₆ )(alkyl)acrylate (C ₉ -C ₂₂ )alkyl, and of (C ₁ -C ₄ )(alkyl)acrylate (C ₁ -C ₄ )alkyl, preferably copolymers of (C ₉ -C ₂₂ )alkyl (meth)acrylate and (C ₁ -C ₄ )alkyl (meth)acrylate;
iii) one or more hydrocarbon-based liquid fatty substance(s);
2) one or more cationic polymers, and
3) one or more anionic polymers. Composition according to Claim 1, characterized in that the particle or particles i) consist(s) of an ethylenic polymeric core derived from homopolymers a) or from copolymers b) or c), as defined in preceding claim, and ii) one or more polymeric surface stabilizer(s) derived from homopolymer d) and the copolymers e) as defined in the preceding claim. Composition according to any one of the preceding claims, characterized in that the polymer(s) constituting the particles i) is (are) chosen from ethylenic acrylate copolymers b) resulting from the polymerization:
- of at least two different (C ₁ -C ₄ )(alkyl)acrylate (C ₁ -C ₄ )alkyl monomers, preferably C ₁ -C ₄ alkyl acrylate such as methyl acrylate and ethyl; and
- optionally a (C ₁ -C ₄ )(alkyl)acrylic acid monomer, in particular acrylic acid.
- of at least two different (C ₁ -C ₄ )(alkyl)acrylate (C ₁ -C ₄ )alkyl monomers, preferably C ₁ -C ₄ alkyl acrylate such as methyl acrylate and ethyl; and
- optionally a (C ₁ -C ₄ )(alkyl)acrylic acid monomer, in particular acrylic acid. Composition according to any one of the preceding claims, in which the monomers are chosen from C1-C4 alkyl (meth)acrylates such as methyl (meth)acrylate, ethyl (meth)acrylate, (meth)acrylate n-propyl, isopropyl (meth)acrylate, n-butyl (meth)acrylate, or tert-butyl (meth)acrylate; more preferably chosen from methyl (meth)acrylate, ethyl (meth)acrylate. Composition according to any one of the preceding claims, in which the oily dispersion (A) comprises from 60% to 98% by weight, in particular from 75 to 96%, of monomers a) to c) relative to the total weight of polymers contained in the said dispersion . Composition according to any one of the preceding claims, in which the stabilizing polymer(s) ii), is (are) chosen from d) ethylenic homopolymers of (C1-C6)(alkyl)acrylate of (C9 -C22)alkyl; in particular the ethylenic homopolymers of (C1-C4)(alkyl)acrylate of (C9-C18)alkyl; Composition according to any one of the preceding claims, in which the stabilizing polymer(s) ii), is (are) chosen from homopolymers of isodecyl (meth)acrylate, isodecyl (meth)acrylate, lauryl, stearyl (meth)acrylate, hexadecyl (meth)acrylate, behenyl (meth)acrylate and random copolymers of isodecyl (meth)acrylate, lauryl, stearyl, hexadecyl, behenyl and ( C1-C4 alkyl meth)acrylate; preferably present in a weight ratio of 2-ethylhexyl, isooctyl, isodecyl, lauryl, stearyl, hexadecyl, behenyl/C1-C4 alkyl (meth)acrylate greater than 4; advantageously, said weight ratio ranges from 5 to 15, more preferably said weight ratio ranges from 5.5 to 12. Composition according to any one of the preceding claims, in which the stabilizing polymer(s) ii), is (are) chosen from e) ethylenic copolymers of (C1-C6)(alkyl)acrylate of (C9 -C22)alkyl and (C1-C4)(alkyl)acrylate (C1-C4)alkyl, more particularly copolymers of (meth)acrylate (C9-C18)alkyl and (meth)acrylate (C1-C4 )alkyl; Composition according to any one of Claims 1 to 6, in which the stabilizing polymer(s) ii), is (are) chosen from ethylenic copolymers e) resulting from the polymerization of a C1-C4 monomer (C9-C22)alkyl )(alkyl)acrylate and two different monomers (C ₁ -C ₄ )(alkyl)(C ₁ -C ₄ )alkyl acrylate; preferably the stabilizing agent(s) ii) are chosen from copolymers resulting from the polymerization of a monomer chosen from isodecyl, lauryl, stearyl, hexadecyl and behenyl (meth)acrylates, and from two alkyl (meth)acrylate monomers C1-C4 different preferably from methyl and ethyl acrylate, in particular the weight ratio of (meth)acrylates of isodecyl, lauryl, stearyl, hexadecyl, behenyl / (meth)acrylate C1-C4 greater than 4; advantageously, said weight ratio ranges from 5 to 15, more preferably said weight ratio ranges from 5.5 to 11. Composition according to any one of Claims 1 to 6, in which the stabilizing polymer(s) ii), is (are) chosen from ethylenic copolymers e) resulting from the polymerization of two different monomers (C1- C4)(alkyl)acrylate of (C9-C22)alkyl and of a monomer (C ₁ -C ₄ )(alkyl)acrylate of (C ₁ -C ₄ )alkyl; preferably the stabilizing agent(s) ii) are chosen from copolymers resulting from the polymerization of two different monomers chosen from isodecyl, lauryl, stearyl, hexadecyl, behenyl (meth)acrylates, and an alkyl (meth)acrylate monomer in C1-C4 preferably of methyl and ethyl acrylate, in particular the weight ratio of (meth)acrylates of isodecyl, lauryl, stearyl, hexadecyl, behenyl / (meth)acrylate of C1-C4 alkyl greater than 4 advantageously, said weight ratio ranges from 4.5 to 10, more preferably said weight ratio ranges from 5 to 8. Composition according to any one of the preceding claims, in which the weight ratio of the stabilizer polymer(s) ii) and i) of the particle(s) of polymer(s) present in the dispersion (A) is between 0.5 and 2, preferably from 0.8 to 1.2 and better equal to 1 . Composition according to any one of the preceding claims, in which the hydrocarbon-based liquid fatty substance(s) iii) is (are) chosen from hydrocarbons, in particular alkanes, oils of animal origin, oils of plant origin, glycerides or fluorinated oils of synthetic origin, fatty alcohols, fatty acid and/or fatty alcohol esters, non-silicone waxes, silicones; in particular the hydrocarbon-based liquid fatty substance(s) are preferably volatile hydrocarbon-based oils or are a mixture of different volatile oils, preferably chosen from isododecane and octyldodecanol. Composition according to any one of the preceding claims, characterized in that the total content of dispersion(s) of particles (A) ranges from 0.1 to 20% by weight, and more preferably from 0.5 to 10% by weight , better still from 1 to 8% by weight, relative to the total weight of the composition. Composition according to any one of the preceding claims, characterized in that the cationic polymers are chosen from homo- or copolymers comprising one or more units derived from vinylamine and optionally one or more units derived from vinylformamide. cationic polysaccharides, alkyl diallyl amine or dialkyl diallyl ammonium cyclopolymers and preferably cationic polysaccharides and mixtures thereof. Composition according to any one of the preceding claims, characterized in that the content of the cationic polymer(s) ranges from 0.05 to 15% by weight, preferably from 0.5 to 10% by weight, and more preferably from 1 to 8% by weight, relative to the total weight of the composition. Composition according to any one of the preceding claims, characterized in that the anionic polymers are chosen from crosslinked or non-crosslinked homopolymers or copolymers of acrylic or methacrylic acid and their salts, crosslinked or non-crosslinked homopolymers and copolymers of 2- acrylamido-2-methyl-propane sulfonic acid and their salts, the anionic branched block polymer butyl acrylate/acrylic acid/methacrylic acid (INCI name AMP-ACRYLATES/ALLYL METHACRYLATE COPOLYMER), anionic polysaccharides, alone or in mixtures. Composition according to any one of the preceding claims, characterized in that the content of the anionic polymer(s) ranges from 0.05 to 15% by weight, more preferentially from 0.1 to 10% by weight, and better still from 0, 5 to 8% by weight, relative to the total weight of the composition. Composition according to any one of the preceding claims, characterized in that it comprises water. Composition according to any one of the preceding claims, characterized in that the composition comprises water in a content ranging from 30 to 98% by weight, preferably from 50 to 98% by weight, and more preferably from 65 to 95 % by weight, relative to the total weight of the composition. Process for the cosmetic treatment of keratin fibres, in particular human keratin fibers such as the hair, comprising the application to the said keratin fibers of a composition as defined according to any one of the preceding claims. Use of a composition as defined according to any one of Claims 1 to 20 for styling keratin fibres, in particular human keratin fibers such as the hair.