Composition comprising organosilanes, amino acids and hydroxylated polycarboxylic acids, and cosmetic treatment process

Abstract

The present invention relates to a composition, in particular cosmetic composition, preferably hair composition, comprising one or more organosilanes, one or more compounds of amino acid type and one or more hydroxylated polycarboxylic acids, comprising 2 to 8 carbon atoms, and / or salts thereof, present in a total content of at least 1% by weight, relative to the total weight of the composition. The invention also relates to a cosmetic treatment process, notably hair treatment process, in particular for washing and / or conditioning keratin materials, using said composition.

Description

Composition comprising organosilanes, amino acids and hydroxylated polycarboxylic acids, and cosmetic treatment process

[0001] The present invention relates to a composition, in particular a cosmetic composition, advantageously a hair composition, comprising particular organosilanes, particular polyacids and amino acids. The invention also relates to a cosmetic treatment process, in particular for the hair, using said composition.

[0002] Hair may be damaged or embrittled by the action of external atmospheric agents such as light and bad weather, or by mechanical or chemical treatments, such as brushing, combing, dyeing, bleaching, permanent-waving and / or relaxing. To overcome these drawbacks, it is common practice to make use of hair treatments which can condition the hair. These hair care compositions may be conditioning shampoos or hair conditioners, which may be in the form of hair gels or lotions or more or less thick creams.

[0003] To improve the cosmetic properties of these compositions, it is known practice to introduce therein conditioning agents, which are intended mainly to repair or limit the harmful or undesirable effects brought about by the various treatments or attacking factors to which hair fibres are more or less repeatedly subjected.

[0004] With this aim, it has already been proposed to use, inter alia, organosilanes in cosmetic care compositions, to give hair satisfactory conditioning properties. Such compositions are described, for example, in patent applications FR 2 910 276, EP 2 343 042 and EP 2 111 848.

[0005] However, the care compositions described in these documents afford conditioning and disentangling properties that are not sufficiently long-lasting. Specifically, these properties generally do not sufficiently resist washing and tend to diminish from the first shampoo wash. In other words, even though these hair care compositions make it possible to obtain suitable results during and just after their use, it was found that these effects had a tendency to disappear gradually with hair washes; it was thus necessary to regularly renew the application of hair treatments to maintain adequate conditioning effects.

[0006] Application WO 2016 / 083578 has therefore proposed a hair composition for caring for the hair, capable of affording conditioning properties that are not only satisfactory, but also persistent with respect to washing, for example persistent at least after 3 shampoo washes. This care composition comprises the combination of organosilanes, cationic polymers of high charge density and cationic surfactants.

[0007] A hair treatment process comprising the sequential application of a composition comprising organosilanes and of a composition for caring for or washing the hair has also been proposed, for example by EP 2 111 849. This document describes in particular the use of a composition comprising an organosilane as a pre-shampoo, that is to say applied to the hair before washing with a shampoo comprising at least one anionic surfactant and an amphoteric surfactant. This process makes it possible in particular to obtain supple, smooth hair which disentangles well.

[0008] However, it is still possible to improve the performance results provided by such compositions, notably in terms of providing strength (denser, firmer hair), while at the same time retaining a certain lightness thereof (tonic and tangle-free hair) and also in terms of cosmetic properties such as disentangling and smooth feel; this being immediately, at the time of application of the composition to the hair (at T0), but also persistently, that is to say after several shampoo washes, for example persistence after 2 to 4 shampoo washes.

[0009] That is the objective sought by the present invention.

[0010] One subject of the present invention is thus a composition, in particular cosmetic composition, preferably hair composition, comprising:

[0011] - one or more organosilanes chosen from the compounds of formula (I) below and / or oligomers thereof and / or hydrolysis products thereof,

[0012] - one or more compounds of amino acid type, preferably chosen from the compounds corresponding to formula (II) below and / or salts thereof, preferably present in a total content of at least 0.5% by weight, relative to the total weight of the composition, and

[0013] - one or more hydroxylated polycarboxylic acids, comprising 2 to 8 carbon atoms, and / or salts thereof, present in a total content of at least 1% by weight, relative to the total weight of the composition.

[0014] It has been found that the composition according to the invention makes it possible to give the hair strength and resistance, thus resulting notably in a reduction in the breakage of the hair during the subsequent styling or blow-drying steps and / or in a reduction in the presence of split ends of the hair.

[0015] In addition, the cosmetic properties of the fibre, such as disentangling, smooth feel and elasticity, are improved.

[0016] The composition according to the invention is thus advantageously in the form of a hair care product which provides visible reinforcement of the fibre (= provision of strength) and instantaneous disentangling, especially on wet hair, and in a manner that is persistent with respect to shampoo washes, for example persistent up to at least 3 shampoo washes (without having to reapply the composition).

[0017] In the text hereinbelow, unless otherwise indicated, the limits of a range of values are included in that range, notably in the expressions “between” and “ranging from ... to ...”.

[0018] Moreover, the expression “at least one” used in the present description is equivalent to the expression “one or more”, and may be replaced therewith.1 / Organosilanes

[0019] The composition according to the invention comprises one or more organosilanes chosen from the compounds of formula (I) and / or oligomers thereof and / or hydrolysis products thereof:

[0020] R1Si(OR2)z(R3)x(OH)y (I)

[0021] in which:

[0022] - R1 is a cyclic or non-cyclic, saturated or unsaturated, linear or branched C1-C22, in particular C2-C20, hydrocarbon chain which may be substituted with a group chosen from the groups amine NH2or NHR (R being a linear or branched C1-C20, in particular C1-C6alkyl, or a C3-C40cycloalkyl or an aromatic C6-C30radical); the hydroxyl group (OH), a thiol group, an aryl group (more particularly benzyl) which is unsubstituted or substituted with an NH2or NHR group; it being possible for R1 to be interrupted with a heteroatom (O, S, NH) or a carbonyl group (CO),

[0023] - R2 and R3, which may be identical or different, represent a linear or branched alkyl group comprising from 1 to 6 carbon atoms,

[0024] - y denotes an integer ranging from 0 to 3,

[0025] - z denotes an integer ranging from 0 to 3, and

[0026] - x denotes an integer ranging from 0 to 2,

[0027] with z+x+y = 3.

[0028] The term "oligomer" is intended to mean the polymerization products of the compounds of formula (I) comprising from 2 to 10 silicon atoms.

[0029] Preferably, R1 is a linear or branched, preferably linear, saturated C1-C22, in particular C1-C12, hydrocarbon chain, which may be substituted with an amine group NH2or NHR (R = C1-C20, in particular C1-C6, alkyl).

[0030] Better still, R1 is a saturated linear or branched C1-C12, in particular C2-C6, hydrocarbon chain substituted with an amine group NH2. Preferentially, R1 represents a C2-C6, preferably C2-C4, aminoalkyl group.

[0031] Preferably, R2 represents an alkyl group comprising from 1 to 4 carbon atoms, better still a linear alkyl group comprising from 1 to 4 carbon atoms, and preferably the ethyl group.

[0032] Preferably, z ranges from 1 to 3. Preferably, y = 0. Preferentially, z = 3, and therefore x = y = 0.

[0033] Preferably, the organosilanes used in the context of the invention correspond to formula (I) in which R1 is a saturated linear or branched C1-C12, in particular C2-C6, hydrocarbon chain substituted with an amine group NH2, R2 represents an alkyl group comprising from 1 to 4 carbon atoms, and z = 3 (and therefore x = y = 0).

[0034] Preferably, the composition according to the invention comprises one or more organosilanes chosen from methyltriethoxysilane (MTES), octyltriethoxysilane (OTES), dodecyltriethoxysilane, octadecyltriethoxysilane, hexadecyltriethoxysilane, 3-aminopropyltriethoxysilane (APTES), 2-aminoethyltriethoxysilane (AETES), 3-aminopropylmethyldiethoxysilane, N-(2-aminoethyl)-3-aminopropyltriethoxysilane, 3-(m-aminophenoxy)propyltrimethoxysilane, p-aminophenyltrimethoxysilane, N-(2-aminoethylaminomethyl)phenethyltrimethoxysilane, and oligomers thereof, and / or mixtures thereof; and more particularly chosen from methyltriethoxysilane (MTES) and 3-aminopropyltriethoxysilane (APTES), oligomers thereof, hydrolysis products thereof and / or mixtures thereof; and even better still chosen from 3-aminopropyltriethoxysilane (APTES), oligomers thereof and / or hydrolysis products thereof.

[0035] Preferably, the organosilane(s) of formula (I) and / or oligomers thereof and / or hydrolysis products thereof are present in the composition according to the invention in a total content of at least 6% by weight relative to the total weight of the composition, preferably in a total content ranging from 6% to 20% by weight, preferentially from 7% to 15% by weight and better still from 8% to 13% by weight, relative to the total weight of the composition.

[0036] Preferably, the organosilane(s) corresponding to formula (I) in which R1 is a saturated linear or branched C1-C12, in particular C2-C6, hydrocarbon chain substituted with an amine group NH2, R2 represents an alkyl group comprising from 1 to 4 carbon atoms, and z = 3 (and therefore x = y = 0) are present in the composition according to the invention in a total content of at least 6% by weight relative to the total weight of the composition, preferably in a total content ranging from 6% to 20% by weight, preferentially from 7% to 15% by weight and better still from 8% to 13% by weight, relative to the total weight of the composition.

[0037] Preferably, the organosilane(s) chosen from 3-aminopropyltriethoxysilane (APTES), oligomers thereof and / or hydrolysis products thereof are present in the composition according to the invention in a total content of at least 6% by weight relative to the total weight of the composition, preferably in a total content ranging from 6% to 20% by weight, preferentially from 7% to 15% by weight and better still from 8% to 13% by weight, relative to the total weight of the composition.2 / Compounds of amino acid type

[0038] The composition according to the present invention comprises one or more compounds of amino acid type.

[0039] For the purposes of the present invention, “compound of amino acid type” means an organic compound comprising one or more carboxylic acid and / or sulfonic acid functions and one or more amine functions, it being possible for the amine function(s) to be endocyclic, optionally in salt form; said amine function(s) being primary or secondary amine functions.

[0040] Preferably, the compound(s) of amino acid type are chosen from compounds of amino acid type comprising only one or more carboxylic acid functions (thus not comprising any sulfonic acid functions) and / or salts thereof. Said compounds are also called compounds of aminocarboxylic acid type and are particularly preferred.

[0041] Preferably, the composition according to the present invention comprises one or more compounds of amino acid type chosen from the compounds corresponding to formula (II) below and / or salts thereof.

[0042] The compounds of amino acid type may thus correspond to formula (II):

[0043] in which p is an integer equal to 1 or 2, it being understood that:

[0044] - when p = 1, R forms, with the nitrogen atom, a saturated heterocycle comprising from 5 to 8 ring members, preferably 5 ring members, it being possible for this ring to be optionally substituted with one or more groups chosen from hydroxyl or (C1-C4)alkyl;

[0045] - when p = 2, R represents a hydrogen atom or else a saturated, linear or branched, (C1-C12)alkyl, preferably (C1-C4)alkyl, group, optionally interrupted with one or more heteroatoms or groups chosen from –S–, –NH– or –C(NH)– and / or optionally substituted with one or more groups chosen from hydroxyl (-OH), amino (-NH2), -SH, -COOH, -CONH2or –NH–C(NH)–NH2or a C5-C7aryl group, in particular phenyl, itself optionally substituted with one or more OH.

[0046] Preferably, when p = 1, R forms, with the nitrogen atom, a saturated heterocycle comprising 5 ring members, this ring not being substituted.

[0047] Preferably, p = 2.

[0048] Preferably, when p = 2, R represents a hydrogen atom or a saturated, linear or branched, (C1-C4)alkyl group, optionally interrupted with a –S– heteroatom and / or optionally substituted with one or two groups chosen from hydroxyl, amino or –NH–C(NH)–NH2.

[0049] Preferentially, p = 2 and R represents a hydrogen atom.

[0050] The compounds of amino acid type may also be a salt of a compound of formula (II).

[0051] These salts comprise salts with organic or mineral bases, for example the salts of alkali metals, for instance lithium, sodium or potassium salts; the salts of alkaline-earth metals, for instance magnesium or calcium salts, and zinc salts.

[0052] The compounds of amino acid type may be in the form of an optical isomer of L, D or DL configuration, preferably of L configuration.

[0053] As examples according to the present invention of compounds in the form of an optical isomer of L configuration, mention may be made of L-methionine, L-serine, L-arginine and L-lysine.

[0054] Preferably, the compound(s) of amino acid type according to the invention are chosen from glycine, arginine, tyrosine, methionine, serine, glutamic acid, lysine, salts thereof (particularly alkali metal, alkaline-earth metal or zinc salts) and mixtures thereof.

[0055] Preferably, the compound(s) of amino acid type according to the invention are chosen from glycine, arginine, tyrosine, glutamic acid, serine, salts thereof and mixtures thereof.

[0056] Better still, the compound of amino acid type is chosen from glycine, salts thereof (particularly alkali metal, alkaline-earth metal or zinc salts) and mixtures thereof.

[0057] As glycine salts according to the present invention, mention may be made of sodium glycinate, zinc glycinate, calcium glycinate, magnesium glycinate, manganese glycinate and potassium glycinate, preferably sodium glycinate and potassium glycinate.

[0058] Preferably, the compound of amino acid type is glycine.

[0059] According to a preferred embodiment of the invention, the composition may comprise at least 2 different compounds of amino acid type, better still at least 3 different compounds of amino acid type.

[0060] In particular, the composition according to the invention may comprise at least 2 different compounds corresponding to formula (II) and / or salts thereof, better still at least 3 different compounds corresponding to formula (II) and / or salts thereof.

[0061] Preferentially, the composition according to the invention may comprise at least 2 different compounds chosen from glycine, arginine, tyrosine, glutamic acid, serine, salts thereof and mixtures thereof; better still at least 3 different compounds chosen from glycine, arginine, tyrosine, glutamic acid, serine, salts thereof and mixtures thereof.

[0062] Even better still, the composition according to the invention may comprise:

[0063] - glycine and / or a salt thereof, and

[0064] - glutamic acid and / or a salt thereof,

[0065] - optionally arginine and / or a salt thereof,

[0066] - optionally serine and / or a salt thereof.

[0067] Very preferentially, the composition according to the invention may comprise glycine and / or a salt thereof, glutamic acid and / or a salt thereof, arginine and / or a salt thereof, and serine and / or a salt thereof.

[0068] Preferably, the total content of compound(s) of amino acid type present in the composition according to the invention is at least 0.5% by weight relative to the total weight of the composition. This content may range from 0.5% to 10% by weight, in particular from 0.8% to 8% by weight, better still from 1% to 7% by weight and even better still from 1.3% to 5% by weight, relative to the total weight of the composition.

[0069] In particular, the total content of compound(s) of amino acid type of formula (II) in the composition according to the invention is at least 0.5% by weight relative to the total weight of the composition. This content may range from 0.5% to 10% by weight, in particular from 0.8% to 8% by weight, better still from 1% to 7% by weight and even better still from 1.3% to 5% by weight, relative to the total weight of the composition.

[0070] Better still, the total content of compound(s) of amino acid type chosen from glycine, serine, glutamic acid, arginine, tyrosine, salts thereof and mixtures thereof, in the composition according to the invention, is at least 0.5% by weight relative to the total weight of the composition. This content may range from 0.5% to 10% by weight, in particular from 0.8% to 8% by weight, better still from 1% to 7% by weight and even better still from 1.3% to 5% by weight, relative to the total weight of the composition.

[0071] Most particularly, the total content of compound(s) of amino acid type chosen from glycine and salts thereof, and mixtures thereof, in the composition according to the invention is at least 0.5% by weight relative to the total weight of the composition. This content may range from 0.5% to 10% by weight, in particular from 0.7% to 8% by weight, better still from 0.8% to 5% by weight, relative to the total weight of the composition.3 / Hydroxy(poly)carboxylic acids

[0072] The composition according to the invention also comprises one or more hydroxylated polycarboxylic acids, comprising 2 to 8 carbon atoms, and / or salts thereof.

[0073] These polyacids are different from the compounds of amino acid type described above.

[0074] Said hydroxylated polycarboxylic acids comprise several, in particular at least 2, COOH groups (in acid or salified form), better still 2 or 3 COOH groups (in acid or salified form).

[0075] These polyacids differ from hydroxylated monocarboxylic acids, which themselves comprise only one COOH group.

[0076] Said hydroxylated polycarboxylic acids according to the invention also comprise at least one OH group, but may comprise several of them, in particular from 2 to 3 OH groups.

[0077] Preferably, said hydroxylated polycarboxylic acids comprise in total from 4 to 6 carbon atoms.

[0078] The hydrocarbon chain of said hydroxylated polycarboxylic acids may be linear or branched, and saturated or unsaturated, and is preferably saturated and linear.

[0079] Advantageously, the hydroxylated polycarboxylic acids and / or salts thereof comprise in total from 4 to 6 carbon atoms, 1 to 3 OH groups and 2 to 3 COOH groups (in acid or salified form).

[0080] The salts of these polyacids comprise the salts with organic or mineral bases, for example the salts of alkali metals, such as the lithium, sodium or potassium salts; the salts of alkaline-earth metals, such as the magnesium or calcium salts, and the zinc salts. The alkali metal or alkaline-earth metal salts are preferred and in particular the sodium salts.

[0081] Preferably, the hydroxylated polycarboxylic acids or salts thereof are chosen from tartaric acid or citric acid, and salts thereof, in particular alkali metal or alkaline-earth metal salts; most particularly sodium citrate and / or sodium tartrate; even better, citric acid or salts thereof, in particular alkali or alkaline-earth metal salts, such as sodium citrate.

[0082] The total content of hydroxylated polycarboxylic acids comprising in total 2 to 8 carbon atoms, and / or salts thereof, present in the composition according to the invention is at least 1% by weight, relative to the total weight of the composition. This content may preferably range from 1% to 12% by weight, better still from 1.5% to 10% by weight, even better still from 2% to 8% by weight, relative to the total weight of the composition.

[0083] In particular, the total content of hydroxylated polycarboxylic acids comprising in total from 4 to 6 carbon atoms, from 1 to 3 OH groups and 2 or 3 COOH groups, or salts thereof, present in the composition according to the invention may range from 1% to 12% by weight, better still from 1.5% to 10% by weight, even better still from 2% to 8% by weight, relative to the total weight of the composition.

[0084] Most particularly, the total content of hydroxylated polycarboxylic acids chosen from tartaric acid or citric acid, and salts thereof, in particular alkali metal or alkaline-earth metal salts, in the composition according to the invention may range from 1% to 12% by weight, better still from 1.5% to 10% by weight, even better still from 2% to 8% by weight, relative to the total weight of the composition.

[0085] Better still, the content of citric acid and / or salts thereof in the composition according to the invention may range from 1% to 12% by weight, better still from 1.5% to 10% by weight, even better still from 2% to 8% by weight, relative to the total weight of the composition.

[0086] Optionally, the composition according to the invention may also comprise one or more hydroxylated monocarboxylic acids, comprising 2 to 8 carbon atoms, and / or salts thereof.

[0087] Said monoacids comprise a single COOH group (in acid or salified form). They also comprise at least one OH group but may comprise several thereof, notably from 2 to 3 OH groups. Preferably, they comprise in total from 4 to 6 carbon atoms and their hydrocarbon chain is saturated and linear. Advantageously, the hydroxylated monocarboxylic acids and / or salts thereof comprise in total from 4 to 6 carbon atoms, from 1 to 3 OH groups and 1 COOH group (in acid or salified form).

[0088] The salts of these monoacids comprise the salts with organic or mineral bases, for example the salts of alkali metals, such as the lithium, sodium or potassium salts; the salts of alkaline-earth metals, such as the magnesium or calcium salts, and the zinc salts. The alkali metal or alkaline-earth metal salts are preferred and in particular the sodium salts.

[0089] Preferably, the hydroxylated monocarboxylic acids or salts thereof are chosen from alpha-hydroxy acids and salts thereof, and in particular from lactic or glycolic acids, and salts thereof, in particular alkali metal or alkaline-earth metal salts thereof.

[0090] When they are present in the composition according to the invention, the total content of hydroxylated monocarboxylic acids comprising in total 2 to 8 carbon atoms, and / or salts thereof, may range from 0.01% to 5% by weight relative to the total weight of the composition, in particular from 0.05% to 2% by weight, better still from 0.1% to 1% by weight, relative to the total weight of the composition.

[0091] Advantageously, the composition according to the invention does not comprise (0%) hydroxylated monocarboxylic acids comprising in total 2 to 8 carbon atoms, and / or salts thereof.4 / Cationic polymers

[0092] The composition according to the invention may optionally comprise one or more cationic polymers.

[0093] The term “cationic polymer” denotes any non-silicone (not comprising any silicon atoms) polymer containing cationic groups and / or groups that can be ionized into cationic groups and not containing any anionic groups and / or groups that can be ionized into anionic groups.

[0094] The cationic polymers which can be used preferably have a cationic charge density greater than or equal to 4 milliequivalents / gram (meq / g), better still greater than or equal to 5 meq / g, or even ranging from 5 to 20 meq / g.

[0095] The cationic charge density of a polymer corresponds to the number of moles of cationic charges per unit mass of polymer under the conditions in which the latter is completely ionized. It may be determined by calculation if the structure of the polymer is known, i.e. the structure of the monomers constituting the polymer and their molar proportion or weight proportion. It may also be determined experimentally by the Kjeldahl method.

[0096] The cationic polymers that may be used preferably have a weight-average molar mass (Mw) of between 500 and 5×106approximately and preferably between 103and 3×106approximately.

[0097] The cationic polymers that can be used may be associative or non-associative. Preferably, they are non-associative.

[0098] The term "associative polymer" refers to an amphiphilic polymer that is capable, in an aqueous medium, of reversibly combining with itself or with other molecules. It generally includes, in its chemical structure, at least one hydrophilic region or group and at least one hydrophobic region or group. In particular, the hydrophobic group may be a fatty hydrocarbon chain such as a linear or branched alkyl, linear or branched arylalkyl or linear or branched alkylaryl group comprising at least 8 carbon atoms, preferably 8 to 30 carbon atoms, better still from 12 to 24 carbon atoms.

[0099] Among the cationic polymers that may be used, mention may be made of:

[0100] (1) homopolymers or copolymers derived from acrylic or methacrylic esters or amides and including at least one of the units having the following formulae:

[0101] in which:

[0102] - R3, which may be identical or different, denote a hydrogen atom or a CH3radical;

[0103] - A, which may be identical or different, represent a linear or branched divalent alkyl group of 1 to 6 carbon atoms, preferably 2 or 3 carbon atoms, or a hydroxyalkyl group of 1 to 4 carbon atoms;

[0104] - R4, R5and R6, which may be identical or different, represent an alkyl group having from 1 to 18 carbon atoms or a benzyl radical, preferably an alkyl group having from 1 to 6 carbon atoms;

[0105] - R1and R2, which may be identical or different, represent a hydrogen atom or an alkyl group having from 1 to 6 carbon atoms, preferably methyl or ethyl;

[0106] - X denotes an anion derived from a mineral or organic acid, such as a methosulfate anion or a halide such as chloride or bromide.

[0107] The copolymers of family (1) may also contain one or more units derived from comonomers that may be chosen from the family of acrylamides, methacrylamides, diacetone acrylamides, acrylamides and methacrylamides substituted on the nitrogen with lower (C1-C4) alkyls, acrylic or methacrylic acid esters, vinyllactams such as vinylpyrrolidone or vinylcaprolactam, and vinyl esters.

[0108] Among these copolymers of family (1), mention may be made of:

[0109] - copolymers of acrylamide and of dimethylaminoethyl methacrylate quaternized with dimethyl sulfate or with a dimethyl halide, such as the product sold under the name Hercofloc by Hercules,

[0110] - copolymers of acrylamide and of methacryloyloxyethyltrimethylammonium chloride, such as the products sold under the name Bina Quat P 100 by Ciba Geigy,

[0111] - the copolymer of acrylamide and of methacryloyloxyethyltrimethylammonium methosulfate, such as the product sold under the name Reten by Hercules,

[0112] - quaternized or non-quaternized vinylpyrrolidone / dialkylaminoalkyl acrylate or methacrylate copolymers, such as the products sold under the name Gafquat by ISP, for instance Gafquat 734 or Gafquat 755, or alternatively the products known as Copolymer 845, 958 and 937,

[0113] - dimethylaminoethyl methacrylate / vinylcaprolactam / vinylpyrrolidone terpolymers, such as the product sold under the name Gaffix VC 713 by ISP,

[0114] - vinylpyrrolidone / methacrylamidopropyldimethylamine copolymers, such as the products sold under the name Styleze CC 10 by ISP,

[0115] - quaternized vinylpyrrolidone / dimethylaminopropylmethacrylamide copolymers such as the product sold under the name Gafquat HS 100 by ISP,

[0116] - preferably crosslinked polymers of methacryloyloxy(C1-C4)alkyltri(C1-C4)alkylammonium 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 homopolymerization or copolymerization being followed by crosslinking with an olefinically unsaturated compound, in particular methylenebisacrylamide. Use may be made more particularly of a crosslinked acrylamide / methacryloyloxyethyltrimethylammonium chloride copolymer (20 / 80 by weight) in the form of a dispersion comprising 50% by weight of said copolymer in mineral oil. This dispersion is sold under the name Salcare® SC 92 by Ciba. Use may also be made of a crosslinked methacryloyloxyethyltrimethylammonium chloride homopolymer comprising approximately 50% by weight of the homopolymer in mineral oil or in a liquid ester. These dispersions are sold under the names Salcare® SC 95 and Salcare® SC 96 by Ciba;

[0117] (2) cationic polysaccharides, particularly cationic celluloses and galactomannan gums. Among the cationic polysaccharides, mention may be made more particularly of cellulose ether derivatives including quaternary ammonium groups, cationic cellulose copolymers or cellulose derivatives grafted with a water-soluble quaternary ammonium monomer and cationic galactomannan gums.

[0118] The cellulose ether derivatives including quaternary ammonium groups are notably described in FR 1 492 597, and mention may be made of the polymers sold under the name Ucare Polymer JR (JR 400 LT, JR 125 and JR 30M) or LR (LR 400 and LR 30M) by Amerchol. These polymers are also defined in the CTFA dictionary as quaternary ammoniums of hydroxyethylcellulose that have reacted with an epoxide substituted with a trimethylammonium group.

[0119] Cationic cellulose copolymers or cellulose derivatives grafted with a water-soluble quaternary ammonium monomer are described notably in patent US 4 131 576, and mention may be made of hydroxyalkyl celluloses, for instance hydroxymethyl, hydroxyethyl or hydroxypropyl celluloses notably grafted with a methacryloylethyltrimethylammonium, methacrylamidopropyltrimethylammonium or dimethyldiallylammonium salt. The commercial products corresponding to this definition are more particularly the products sold under the names Celquat L 200 and Celquat H 100 by National Starch.

[0120] Cationic galactomannan gums are described more particularly in patents US 3 589 578 and US 4 031 307, and mention may be made of guar gums comprising cationic trialkylammonium groups. Use is made, for example, of guar gums modified with a 2,3-epoxypropyltrimethylammonium salt (for example a chloride). Such products are notably sold under the names Jaguar C13 S, Jaguar C 15, Jaguar C 17 and Jaguar C162 by Rhodia;

[0121] (3) polymers formed from piperazinyl units and divalent alkylene or hydroxyalkylene radicals containing linear or branched chains, optionally interrupted with oxygen, sulfur or nitrogen atoms or with aromatic or heterocyclic rings, and also the oxidation and / or quaternization products of these polymers;

[0122] (4) water-soluble polyaminoamides prepared in particular by polycondensation of an acidic compound with a polyamine; these polyaminoamides can be crosslinked 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 alternatively with an oligomer resulting from the reaction of a difunctional compound which is reactive with a bis-halohydrin, a bis-azetidinium, a bis-haloacyldiamine, a bis-alkyl halide, an epihalohydrin, a diepoxide or a bis-unsaturated derivative; the crosslinking agent being used in proportions ranging from 0.025 to 0.35 mol per amine group of the polyaminoamide; these polyaminoamides can be alkylated or, if they include one or more tertiary amine functions, they can be quaternized;

[0123] (5) polyaminoamide derivatives resulting from the condensation of polyalkylene polyamines with polycarboxylic acids followed by alkylation with difunctional agents. Mention may be made, for example, of adipic acid / dialkylaminohydroxyalkyl-dialkylenetriamine polymers in which the alkyl radical includes from 1 to 4 carbon atoms and preferably denotes methyl, ethyl or propyl. Among these derivatives, mention may be made more particularly of the adipic acid / dimethylamino-hydroxypropyl / diethylenetriamine polymers sold under the name Cartaretine F, F4 or F8 by Sandoz;

[0124] (6) polymers obtained by reacting a polyalkylene polyamine including two primary amine groups and at least one secondary amine group with a dicarboxylic acid chosen from diglycolic acid and saturated aliphatic dicarboxylic acids containing from 3 to 8 carbon atoms; the mole 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 mole ratio of epichlorohydrin relative to the secondary amine group of the polyaminoamide preferably of between 0.5:1 and 1.8:1. Polymers of this type are sold in particular under the name Hercosett 57 by Hercules Inc. or under the name PD 170 or Delsette 101 by Hercules in the case of the adipic acid / epoxy-propyl / diethylenetriamine copolymer;

[0125] (7) cyclopolymers of alkyldiallylamine or of dialkyldiallylammonium, such as the homopolymers or copolymers including, as main constituent of the chain, units corresponding to formula (I) or (II):

[0126] in which

[0127] - k and t are equal to 0 or 1, the sum k + t being equal to 1;

[0128] - R12denotes a hydrogen atom or a methyl radical;

[0129] - R10and R11, independently of each other, denote a C1-C6alkyl group, a C1-C5hydroxyalkyl group, a C1-C4amidoalkyl group; or alternatively R10and R11may denote, together with the nitrogen atom to which they are attached, a heterocyclic group such as piperidinyl or morpholinyl; R10and R11, independently of each other, preferably denote a C1-C4alkyl group;

[0130] - Y-is an anion such as bromide, chloride, acetate, borate, citrate, tartrate, bisulfate, bisulfite, sulfate or phosphate.

[0131] Mention may be made more particularly of the homopolymer of dimethyldiallylammonium salts (for example chloride) for example sold under the name Merquat 100 by Nalco and the copolymers of diallyldimethylammonium salts (for example chloride) and of acrylamide, notably sold under the name Merquat 550 or Merquat 7SPR;

[0132] (8) quaternary diammonium polymers comprising repeating units of formula:

[0133] in which:

[0134] - R13, R14, R15and R16, which may be identical or different, represent aliphatic, alicyclic or arylaliphatic radicals comprising from 1 to 20 carbon atoms or C1-C12hydroxyalkyl aliphatic radicals;

[0135] or else R13, R14, R15and R16, together or separately, form, with the nitrogen atoms to which they are attached, heterocycles optionally comprising a second non-nitrogen heteroatom;

[0136] or else R13, R14, R15and R16represent a linear or branched C1-C6alkyl radical substituted with a nitrile, ester, acyl, amide or -CO-O-R17-D or -CO-NH-R17-D group, where R17is an alkylene and D is a quaternary ammonium group;

[0137] - A1and B1represent linear or branched, saturated or unsaturated, divalent polymethylene groups comprising from 2 to 20 carbon atoms, which may contain, linked to or intercalated in the main chain, one or more aromatic rings or one or more oxygen or sulfur atoms or sulfoxide, sulfone, disulfide, amino, alkylamino, hydroxyl, quaternary ammonium, ureido, amide or ester groups; and

[0138] - X-denotes an anion derived from a mineral or organic acid;

[0139] it being understood that A1, R13and R15can form, with the two nitrogen atoms to which they are attached, a piperazine ring;

[0140] in addition, if A1denotes a linear or branched, saturated or unsaturated alkylene or hydroxyalkylene radical, B1may also denote a group (CH2)n-CO-D-OC-(CH2)p- with n and p, which may be identical or different, being integers ranging from 2 to 20, and D denoting:

[0141] a) a glycol residue of formula -O-Z-O-, in which Z denotes a linear or branched hydrocarbon radical or a group corresponding to one of the following formulae: -(CH2CH2O)x-CH2CH2- and -[CH2CH(CH3)O]y-CH2CH(CH3)-, in which 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;

[0142] b) a bis-secondary diamine residue, such as a piperazine derivative;

[0143] 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 -CH2-CH2-S-S-CH2-CH2-;

[0144] d) a ureylene group of formula -NH-CO-NH-.

[0145] Preferably, X-is an anion such as chloride or bromide. These polymers have a number-average molar mass (Mn) generally of between 1000 and 100 000.

[0146] Mention may be made more particularly of polymers which are constituted of repeating units corresponding to the formula:

[0147] in which R1, R2, R3and R4, which may be identical or different, denote an alkyl or hydroxyalkyl radical containing 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.

[0148] A particularly preferred compound of formula (IV) is the one for which R1, R2, R3and R4represent a methyl radical, n = 3, p = 6 and X = Cl, known as Hexadimethrine chloride according to the INCI (CTFA) nomenclature;

[0149] (9) polyquaternary ammonium polymers comprising units of formula (V):

[0150] in which:

[0151] - R18, R19, R20and R21, which may be identical or different, represent a hydrogen atom or a methyl, ethyl, propyl, β-hydroxyethyl, β-hydroxypropyl or -CH2CH2(OCH2CH2)pOH radical, in which p is equal to 0 or to an integer between 1 and 6, with the proviso that R18, R19, R20and R21do not simultaneously represent a hydrogen atom,

[0152] - r and s, which may be identical or different, are integers of between 1 and 6,

[0153] - q is equal to 0 or to an integer between 1 and 34,

[0154] - X-denotes an anion such as a halide,

[0155] - A denotes a divalent dihalide radical or preferably represents -CH2-CH2-O-CH2-CH2-.

[0156] Examples that may be mentioned include the products Mirapol® A 15, Mirapol® AD1, Mirapol® AZ1 and Mirapol® 175 sold by Miranol;

[0157] (10) quaternary polymers of vinylpyrrolidone and of vinylimidazole, such as, for example, the products sold under the names Luviquat® FC 905, FC 550 and FC 370 by BASF;

[0158] (11) polyamines, such as Polyquart® H sold by Cognis, which is referenced under the name Polyethylene Glycol (15) Tallow Polyamine in the CTFA dictionary;

[0159] (12) polymers including in their structure:

[0160] (a) one or more units corresponding to formula (A) below:

[0161] (b) optionally one or more units corresponding to formula (B) below:

[0162] In other words, these polymers may be particularly chosen from homopolymers or copolymers including one or more units derived from vinylamine and optionally one or more units derived from vinylformamide.

[0163] Preferably, these cationic polymers are chosen from polymers including, in their structure, from 5 mol% to 100 mol% of units corresponding to formula (A) and from 0 mol% to 95 mol% of units corresponding to formula (B), preferentially from 10 mol% to 100 mol% of units corresponding to formula (A) and from 0 mol% to 90 mol% of units corresponding to formula (B).

[0164] These polymers may be obtained, for example, by partial hydrolysis of polyvinylformamide. This hydrolysis may take place in acidic or basic medium.

[0165] The weight-average molecular mass of said polymer, measured by light scattering, may range from 1000 to 3 000 000 g / mol, preferably from 10 000 to 1 000 000 and more particularly from 100 000 to 500 000 g / mol.

[0166] The polymers including units of formula (A) and optionally units of formula (B) are notably sold under the name Lupamin by BASF, for instance, in a non-limiting manner, the products sold under the names Lupamin 9095, Lupamin 5095, Lupamin 1095, Lupamin 9030 (or Luviquat 9030) and Lupamin 9010.

[0167] Cationic polymers chosen from those of families (1), (2), (7) and (10) mentioned above are most particularly preferred, better still those of families (1), (2) and (7).

[0168] Preferably, the cationic polymers that can be used in the context of the invention are chosen, alone or as a mixture, from:

[0169] - alkyldiallylamine or dialkyldiallylammonium cyclopolymers, and in particular homopolymers or copolymers of dimethyldiallylammonium salts (for example chloride);

[0170] - optionally crosslinked homopolymers or copolymers of methacryloyloxy(C1-C4)alkyltri(C1-C4)alkylammonium salts;

[0171] - celluloses and galactomannan gums that are cationic.

[0172] Mention may notably be made of the polymers having the INCI name: Polyquaternium-6, Polyquaternium-7, Polyquaternium-37, Polyquaternium-10, Guar Hydroxypropyltrimonium Chloride, Hydroxypropyl Guar Hydroxypropyltrimonium Chloride, alone or in mixtures.

[0173] Better still, the cationic polymers that may be present in the composition according to the invention are chosen from dimethyldiallylammonium halides, in particular chlorides (Polyquaternium-6).

[0174] Preferably, the composition according to the invention comprises one or more cationic polymers, preferentially chosen from dimethyldiallylammonium halides, in particular chlorides (Polyquaternium-6).

[0175] The composition according to the invention may comprise the cationic polymer(s) in a total amount of between 0.01% and 8% by weight, in particular from 0.05% to 5% by weight, preferentially from 0.1% to 3% by weight and better still from 0.5% to 2% by weight, relative to the total weight of the composition.

[0176] The composition according to the invention may in particular comprise the cationic polymer(s) chosen from dimethyldiallylammonium halides, in particular chlorides, in a total amount of between 0.01% and 8% by weight, in particular from 0.05% to 5% by weight, preferentially from 0.1% to 3% by weight, better still from 0.5% to 2% by weight, relative to the total weight of the composition.5 / Non-ionic surfactants

[0177] The composition according to the invention can optionally comprise one or more non-ionic surfactants.

[0178] Examples of non-ionic surfactants that may be mentioned include the following compounds, alone or as a mixture:

[0179] - oxyalkylenated (C8-C24)alkylphenols;

[0180] - saturated or unsaturated, linear or branched, oxyalkylenated or glycerolated C8-C40alcohols, preferably including one or two fatty chains;

[0181] - saturated or unsaturated, linear or branched, oxyalkylenated C8to C30fatty acid amides;

[0182] - esters of saturated or unsaturated, linear or branched, C8to C30acids and of polyethylene glycols;

[0183] - preferably oxyethylenated esters of saturated or unsaturated, linear or branched, C8to C30acids and of sorbitol;

[0184] - fatty acid esters of sucrose;

[0185] - optionally oxyalkylenated alkyl (poly)glycosides (0 to 10 oxyalkylene units) which may comprise from 1 to 15 glucose units;

[0186] - saturated or unsaturated, oxyethylenated plant oils;

[0187] - condensates of ethylene oxide and / or of propylene oxide;

[0188] - N-(C8-C30)alkylglucamine and N-(C8-C30)acylmethylglucamine derivatives;

[0189] - amine oxides.

[0190] The oxyalkylene units are more particularly oxyethylene or oxypropylene units, or a combination thereof, preferably oxyethylene units.

[0191] The number of moles of ethylene oxide and / or propylene oxide preferably ranges from 1 to 250, more particularly from 2 to 100 and better still from 2 to 50; the number of moles of glycerol ranges notably from 1 to 50 and better still from 1 to 10.

[0192] Advantageously, the non-ionic surfactants according to the invention do not comprise any oxypropylene units.

[0193] Preferably, they comprise a number of moles of ethylene oxide ranging from 1 to 250, notably from 2 to 100 and better still from 2 to 50.

[0194] As examples of glycerolated non-ionic surfactants, use is preferably made of monoglycerolated or polyglycerolated C8to C40alcohols, comprising from 1 to 50 mol of glycerol and preferably from 1 to 10 mol of glycerol.

[0195] Mention may be made of lauryl alcohol containing 4 mol of glycerol (INCI name: Polyglyceryl-4 Lauryl Ether), lauryl alcohol containing 1.5 mol of glycerol, oleyl alcohol containing 4 mol of glycerol (INCI name: Polyglyceryl-4 Oleyl Ether), oleyl alcohol containing 2 mol of glycerol (INCI name: Polyglyceryl-2 Oleyl Ether), cetearyl alcohol containing 2 mol of glycerol, cetearyl alcohol containing 6 mol of glycerol, oleocetyl alcohol containing 6 mol of glycerol, and octadecanol containing 6 mol of glycerol.

[0196] Use is more preferably made, among the glycerolated alcohols, of the C8to C10alcohol having 1 mol of glycerol, the C10to C12alcohol having 1 mol of glycerol and the C12alcohol having 1.5 mol of glycerol.

[0197] Non-ionic surfactants of alkyl (poly)glycoside type may notably be represented by the following general formula: R1O-(R2O)t-(G)v, in which:

[0198] - R1 represents a linear or branched alkyl or alkenyl radical including 6 to 24 carbon atoms and particularly 8 to 18 carbon atoms, or an alkylphenyl radical of which the linear or branched alkyl radical includes 6 to 24 carbon atoms and particularly 8 to 18 carbon atoms;

[0199] - R2 represents an alkylene radical including 2 to 4 carbon atoms;

[0200] - G represents a sugar unit including 5 to 6 carbon atoms;

[0201] - t denotes a value ranging from 0 to 10 and preferably from 0 to 4;

[0202] - v denotes a value ranging from 1 to 15 and preferably from 1 to 4.

[0203] Preferably, the alkyl (poly)glycoside surfactants are compounds of the formula described above in which:

[0204] - R1 denotes a linear or branched, saturated or unsaturated alkyl radical including from 8 to 18 carbon atoms;

[0205] - R2 represents an alkylene radical including 2 to 4 carbon atoms;

[0206] - t denotes a value ranging from 0 to 3 and preferably equal to 0;

[0207] - G denotes glucose, fructose or galactose, preferably glucose;

[0208] - it being possible for the degree of polymerization, i.e. the value of v, to range from 1 to 15 and preferably from 1 to 4; the mean degree of polymerization more particularly being between 1 and 2.

[0209] The glucosidic bonds between the sugar units are generally of 1-6 or 1-4 type and preferably of 1-4 type. Preferably, the alkyl (poly)glycoside surfactant is an alkyl (poly)glucoside surfactant. C8 / C16alkyl (poly)glucosides of 1-4 type, and notably decyl glucosides and caprylyl / capryl glucosides, are most particularly preferred.

[0210] Among the commercial products, mention may be made of the products sold by Cognis under the names Plantaren® (600 CS / U, 1200 and 2000) or Plantacare® (818, 1200 and 2000); the products sold by SEPPIC under the names Oramix CG 110 and Oramix® NS 10; the products sold by BASF under the name Lutensol GD 70, or the products sold by Chem Y under the name AG10 LK.

[0211] Preferably, use is made of C8 / C16alkyl (poly)glycosides of 1-4 type, in particular as a 53% aqueous solution, such as those sold by Cognis under the reference Plantacare® 818 UP.

[0212] The non-ionic surfactant(s) used in the composition according to the invention are preferentially chosen, alone or as a mixture, from:

[0213] - saturated or unsaturated, linear or branched, oxyethylenated C8to C40alcohols comprising from 1 to 100 mol of ethylene oxide, preferably from 2 to 50 and more particularly from 2 to 40 mol of ethylene oxide and preferably including one or two fatty chains;

[0214] - saturated or unsaturated, oxyethylenated plant oils comprising from 1 to 100 and preferably from 2 to 50 mol of ethylene oxide;

[0215] - (C8-C30)alkyl (poly)glycosides, which are optionally oxyalkylenated, preferably with from 0 to 10 mol of ethylene oxide and comprising 1 to 15 glucose units;

[0216] - monoglycerolated or polyglycerolated C8to C40alcohols, comprising from 1 to 50 mol of glycerol and preferably from 1 to 10 mol of glycerol;

[0217] - saturated or unsaturated, linear or branched, oxyalkylenated C8to C30fatty acid amides;

[0218] - esters of saturated or unsaturated, linear or branched, C8to C30acids and of polyethylene glycols;

[0219] - preferably oxyethylenated esters of saturated or unsaturated, linear or branched, C8to C30acids and of sorbitol.

[0220] More preferentially, the non-ionic surfactant(s) used in the composition according to the invention are chosen, alone or as a mixture, from:

[0221] - saturated or unsaturated, linear or branched, oxyethylenated C8to C40alcohols comprising from 1 to 100 mol of ethylene oxide, preferably from 2 to 50 and more particularly from 2 to 40 mol of ethylene oxide and including one or two fatty chains, notably at least one C8-C20, notably C10-C18, alkyl chain;

[0222] - saturated or unsaturated, oxyethylenated plant oils comprising from 1 to 100 mol of ethylene oxide and preferably from 2 to 50 mol of ethylene oxide;

[0223] - preferably oxyethylenated esters of saturated or unsaturated, linear or branched, C8to C30acids and of sorbitol; and

[0224] - (C8-C30)alkyl(poly)glucosides, which are optionally oxyalkylenated, preferably comprising from 0 to 10 mol of ethylene oxide and comprising 1 to 15 glucose units.

[0225] Preferably, the composition according to the invention comprises one or more non-ionic surfactants, preferentially chosen from saturated or unsaturated, oxyethylenated plant oils comprising from 1 to 100 mol of ethylene oxide and preferably from 2 to 50 mol of ethylene oxide.

[0226] Preferably, the composition according to the invention comprises the non-ionic surfactant(s) in a total content ranging from 0.1% to 10% by weight, preferably from 0.2% to 7% by weight, preferentially from 0.5% to 4% by weight, relative to the total weight of the composition according to the invention.Additional compounds

[0227] The composition according to the invention advantageously comprises water, in particular at a concentration ranging preferably from 50% to 95% by weight, for example from 55% to 90% by weight, in particular from 60% to 85% by weight, better still from 70% to 85% by weight, relative to the total weight of the composition.

[0228] The pH of the composition may be between 3 and 7.5, preferentially between 4.0 and 6.0, or even between 4.5 and 5.5.

[0229] The composition according to the invention may optionally comprise one or more organic solvents that are liquid at 25°C, 1 atm, and preferably hydrophilic (water-soluble or water-miscible), which can be chosen from C1-C6aliphatic or aromatic monoalcohols, C2-C8polyols, and C3-C7polyol ethers. Advantageously, the organic solvent is chosen from C2-C4mono-, di- or tri-diols. It may advantageously be chosen from ethanol, isopropanol, benzyl alcohol, glycerol, 1,2-propanediol (propylene glycol) and mixtures thereof.

[0230] The composition according to the invention may also comprise at least one or more usual cosmetic ingredients other than the compounds described above, in particular chosen from surfactants, in particular cationic surfactants; silicones; non-silicone liquid and / or solid fatty substances; thickeners and gelling agents; sunscreens; anti-dandruff agents; antioxidants; chelating agents; reducing agents; oxidation bases, couplers, oxidizing agents, direct dyes; straighteners; nacreous agents and opacifiers; micas, nacres, flakes; pigments; fillers; fragrances; pH modifiers. A person skilled in the art will take care to select the ingredients included in the composition, and also the amounts thereof, so that they do not harm the properties of the compositions of the present invention.

[0231] According to a preferred embodiment of the invention, the cosmetic composition, preferably hair composition, according to the invention may comprise:

[0232] - one or more organosilanes corresponding to formula (I) described above, in which R1 is a saturated linear or branched C1-C12, in particular C2-C6, hydrocarbon chain substituted with an amine group NH2, R2 represents an alkyl group comprising from 1 to 4 carbon atoms, and z = 3 (and therefore x = y = 0), preferably present in a total content of at least 6% by weight relative to the total weight of the composition, preferably in a total content ranging from 6% to 20% by weight, preferentially from 7% to 15% by weight and better still from 8% to 13% by weight, relative to the total weight of the composition;

[0233] - one or more compounds of amino acid type corresponding to formula (II) as defined above, in which p = 2 and R represents a hydrogen atom or a saturated linear or branched (C1-C4)alkyl group, optionally interrupted with a –S– heteroatom and / or optionally substituted with one or two groups chosen from hydroxyl, amino or –NH–C(NH)–NH2; better still R represents a hydrogen atom; preferably present in a total content of at least 0.5% by weight relative to the total weight of the composition, in particular ranging from 0.5% to 10% by weight, in particular from 0.8% to 8% by weight, better still from 1% to 7% by weight and even better still from 1.3% to 5% by weight, relative to the total weight of the composition;

[0234] - one or more hydroxylated polycarboxylic acids comprising in total 4 to 6 carbon atoms, 1 to 3 OH groups and 2 or 3 COOH groups, and / or salts thereof; preferably present in a total content of from 1% to 12% by weight relative to the total weight of the composition, better still from 1.5% to 10% by weight, even better still from 2% to 8% by weight;

[0235] - optionally one or more non-ionic surfactants, in particular chosen from saturated or unsaturated, oxyethylenated plant oils comprising from 1 to 100 mol of ethylene oxide and preferably from 2 to 50 mol of ethylene oxide; preferably in a total content ranging from 0.1% to 10% by weight, preferably from 0.2% to 7% by weight, preferentially from 0.5% to 4% by weight, relative to the total weight of the composition according to the invention;

[0236] - optionally, one or more cationic polymers, in particular chosen from, alone or as a mixture, dimethyldiallylammonium halides, in particular chlorides, preferably present in a total amount ranging from 0.01% to 8% by weight, in particular from 0.05% to 5% by weight, preferentially from 0.1% to 3% by weight and better still from 0.5% to 2% by weight, relative to the total weight of the composition.

[0237] The composition according to the invention especially finds a particularly advantageous application in the hair sector, especially for conditioning the hair. It is advantageously in the form of a hair care and / or conditioning composition, such as a pre-shampoo, a leave-on or rinse-off conditioner, or a hair mask.

[0238] The cosmetic composition may or may not be rinsed off after having been applied to the keratin materials, notably the hair. It is thus optionally possible to perform rinsing, for example with water, after an optional leave-on time. Preferably, it is not rinsed off, after an optional leave-on-time.

[0239] A subject of the invention is also a cosmetic treatment process, notably hair treatment process, in particular for washing and / or conditioning keratin materials, notably keratin fibres, in particular the hair, comprising the application to said keratin materials of a cosmetic composition according to the invention, optionally followed by a rinsing step, after an optional leave-on time.

[0240] Preferably, it is a hair treatment process, in particular for washing and / or conditioning, for sensitized, embrittled and / or damaged hair, in particular hair charged with metal ions, in particular copper and / or calcium ions.

[0241] The cosmetic treatment process, notably hair treatment process, according to the invention may thus comprise a step (i) consisting in applying a cosmetic composition according to the invention to keratin materials, in particular keratin fibres, better still to the hair.

[0242] The cosmetic treatment process, notably hair treatment process, according to the invention may also comprise a washing step (ii), consisting in applying to said keratin materials, in particular keratin fibres, better still the hair, a washing cosmetic composition as defined below.

[0243] The step (i) of applying the composition according to the invention and the washing step (ii) are carried out successively, or sequentially, which means that one of the application steps is prior to the other application step; it being possible for intermediate steps, for example leave-on and / or rinsing and / or drying steps, to be present between these two steps.

[0244] This step (i) may optionally be followed by a leave-on step, for example a leave-on time of from 1 to 15 minutes, in particular from 2 to 5 minutes.

[0245] This step (i) can also be followed by a rinsing step, for example a step of rinsing with water, before carrying out step (ii).

[0246] The term "washing composition" is understood to mean a cosmetic composition comprising one or more anionic surfactants and / or one or more amphoteric surfactants.

[0247] The application step (i) can be carried out before the washing step (ii); the composition according to the invention is in this case used as a pre-shampoo.

[0248] According to this embodiment, there may be a leave-on step between step (i) and step (ii), but, preferably, there is no rinsing step.

[0249] The application step (i) can be carried out after the washing step (ii); the composition according to the invention is in this case used as a conditioner.

[0250] According to this embodiment, there may be a rinsing step after the washing step (ii), then a leave-on step after the application step (i).

[0251] Preferably, the time separating step (i) of applying the composition according to the invention and step (ii) of washing the hair is at most 60 minutes; it may for example be between 10 seconds and 60 minutes, in particular between 20 seconds and 30 minutes, or even between 30 seconds and 15 minutes, even better still between 1 and 10 minutes, and most particularly between 1 and 5 minutes.

[0252] The present invention is illustrated in greater detail in the examples which follow, in which the contents are indicated as % by weight of active material (%AM).Example 1

[0253] The composition according to the invention is prepared (%AM):

[0254] CompositionAminopropyltriethoxysilane10Amino acids (glycine, arginine, serine, glutamic acid)1.8Citric acid4.4PEG-40 hydrogenated castor oil2Polyquaternium-61Preserving agentsqsWaterqs 100%

[0255] A hair composition that can be used as a pre-shampoo or as a conditioner is obtained.

[0256] It is thus possible to apply the composition according to the invention to previously wetted hair, to leave it on for between a few seconds and 5 minutes, then to apply a shampoo composition, in the usual manner, to wash the hair, to rinse it and then to dry it or leave it to dry.

[0257] Before drying, it is observed that wet hair disentangles very easily and is supple and visually smooth.

[0258] After drying, it is found that the hair appears as repaired from the inside and visibly strengthened; the disentangling, smooth feel and elasticity of said hair are improved. The hair repair is uniform from root to tip.

[0259] The composition according to the invention makes it possible to obtain the combination of a repair at the heart of the fibre with instant disentangling, especially on wet hair, and the provision of strength, in a persistent manner.Example 2

[0260] The following compositions are prepared (%AM):

[0261] A comparativeB inventionChlorhexidine digluconate0.040.04Citric acid0.22Aminopropyltriethoxysilane55Phenoxyethanol0.50.5Glycine11Waterqs 100qs 100

[0262] The hair undergoes 5 times the following protocol:

[0263] A standard shampoo is applied to locks of hair sensitized by a bleaching, the hair is rinsed and then composition A or B is applied, in a proportion of 0.4 g of composition per gram of hair.

[0264] After a leave-on time of 5 minutes, the hair is rinsed and then dried in an oven at 60°C.

[0265] To evaluate the resistance of the hair, the percentage of deformation of the fibre is evaluated instrumentally. The greater the percentage of deformation, the less resistant the hair is.

[0266] 20 hairs are sampled from each of the locks treated, according to the above protocol, with either of the compositions A and B. 20 hairs are also sampled from a lock of hair sensitized by untreated bleaching.

[0267] An instrumental tensile test is first carried out on each of the fibres with a Dia-Stron Extensometer MTT 680 device from Diastron: the fibre is drawn at a constant speed (2000 mm / min) and a stress-elongation curve (% deformation) is recorded.

[0268] The percentage of deformation of each fibre, at a given stress (= 25 MPa), is then retained.

[0269] Below is the mean value of the % of deformation obtained on the 20 fibres, for each of the compositions and also for the control hair (untreated):Untreated controlAcomparativeBinvention% deformation27.624.621.2p-value-0.2340.019Provision of resistance vs control-+10.8%+23.2%

[0270] A statistical analysis (T-test) results in p-values of 0.234 (comparative) and 0.019 (invention) respectively.

[0271] It is found that the mean value of the % deformation is significantly lower when the hair is treated with the composition B according to the invention.

[0272] The results demonstrate that the composition B according to the invention made it possible to significantly improve the resistance of the fibre to deformation compared to a hair (p-value <0.05), contrary to the comparative composition A for which the results are not significantly different from the control (p-value >0.05).

Claims

Composition, in particular cosmetic composition, preferably hair composition, comprising:- one or more organosilanes chosen from the compounds of formula (I) and / or oligomers thereof and / or hydrolysis products thereof:R1Si(OR2)z(R3)x(OH)y (I)in which:- R1 is a cyclic or non-cyclic, saturated or unsaturated, linear or branched C1-C22, in particular C2-C20, hydrocarbon chain which may be substituted with a group chosen from the groups amine NH2 or NHR (R being a linear or branched C1-C20, in particular C1-C6 alkyl, or a C3-C40 cycloalkyl or an aromatic C6-C30 radical); the hydroxyl group (OH), a thiol group, an aryl group (more particularly benzyl) which is unsubstituted or substituted with an NH2 or NHR group; it being possible for R1 to be interrupted with a heteroatom (O, S, NH) or a carbonyl group (CO),- R2 and R3, which may be identical or different, represent a linear or branched alkyl group comprising from 1 to 6 carbon atoms,- y denotes an integer ranging from 0 to 3,- z denotes an integer ranging from 0 to 3, and- x denotes an integer ranging from 0 to 2,with z+x+y = 3,- one or more compounds of amino acid type, preferably present in a total content of at least 0.5% by weight, relative to the total weight of the composition, and- one or more hydroxylated polycarboxylic acids, comprising 2 to 8 carbon atoms, and / or salts thereof, present in a total content of at least 1% by weight, relative to the total weight of the composition.Composition according to Claim 1, in which the organosilane(s) of formula (I) and / or oligomers thereof and / or hydrolysis products thereof are such that R1 is a saturated linear or branched C1-C12, in particular C2-C6, hydrocarbon chain substituted with an amine group NH2, R2 represents an alkyl group comprising from 1 to 4 carbon atoms, and z = 3 (and therefore x = y = 0).Composition according to either of the preceding claims, in which the organosilane(s) of formula (I) and / or oligomers thereof and / or hydrolysis products thereof are present in a total content of at least 6% by weight relative to the total weight of the composition, preferably in a total content ranging from 6% to 20% by weight, preferentially from 7% to 15% by weight and better still from 8% to 13% by weight, relative to the total weight of the composition.Composition according to one of the preceding claims, in which the compound(s) of amino acid type are chosen from compounds corresponding to formula (II) and / or salts thereof:in which p is an integer equal to 1 or 2, it being understood that:- when p = 1, R forms, with the nitrogen atom, a saturated heterocycle comprising from 5 to 8 ring members, preferably 5 ring members, it being possible for this ring to be optionally substituted with one or more groups chosen from hydroxyl or (C1-C4)alkyl;- when p = 2, R represents a hydrogen atom or else a saturated, linear or branched, (C1-C12)alkyl, preferably (C1-C4)alkyl, group, optionally interrupted with one or more heteroatoms or groups chosen from –S–, –NH– or –C(NH)– and / or optionally substituted with one or more groups chosen from hydroxyl (-OH), amino (-NH2), -SH, -COOH, -CONH2or –NH–C(NH)–NH2or a C5-C7aryl group, in particular phenyl, itself optionally substituted with one or more OH;preferably, when p = 2, R represents a hydrogen atom or a saturated, linear or branched, (C1-C4)alkyl group, optionally interrupted with a –S– heteroatom and / or optionally substituted with one or two groups chosen from hydroxyl, amino or –NH–C(NH)–NH2.Composition according to one of the preceding claims, in which the compound(s) of amino acid type are chosen from glycine, arginine, tyrosine, glutamic acid, serine, salts thereof and mixtures thereof.Composition according to one of the preceding claims, in which the total content of compound(s) of amino acid type is at least 0.5% by weight relative to the total weight of the composition; and may range from 0.5% to 10% by weight, in particular from 0.8% to 8% by weight, better still from 1% to 7% by weight and even better still from 1.3% to 5% by weight, relative to the total weight of the composition.Composition according to one of the preceding claims, in which the hydroxylated polycarboxylic acid(s) comprising 2 to 8 carbon atoms, and / or salts thereof, comprise in total from 4 to 6 carbon atoms, 1 to 3 OH groups and 2 to 3 COOH groups (in acid or salified form); preferably are chosen from tartaric acid or citric acid, and salts thereof, in particular alkali metal or alkaline-earth metal salts; most particularly sodium citrate and / or sodium tartrate; even better, citric acid or salts thereof, in particular alkali or alkaline-earth metal salts, such as sodium citrate.Composition according to one of the preceding claims, in which the total content of hydroxylated polycarboxylic acids comprising in total 2 to 8 carbon atoms, and / or salts thereof, ranges from 1% to 12% by weight, better still from 1.5% to 10% by weight, even better still from 2% to 8% by weight, relative to the total weight of the composition.Composition according to one of the preceding claims, comprising one or more cationic polymers, in particular chosen from, alone or as a mixture:- alkyldiallylamine or dialkyldiallylammonium cyclopolymers, and in particular homopolymers or copolymers of dimethyldiallylammonium salts (for example chloride);- optionally crosslinked homopolymers or copolymers of methacryloyloxy(C1-C4)alkyltri(C1-C4)alkylammonium salts;- celluloses and galactomannan gums that are cationic;preferentially chosen from dimethyldiallylammonium halides, in particular chlorides (Polyquaternium-6).Composition according to one of the preceding claims, comprising one or more non-ionic surfactants, in particular chosen from, alone or as a mixture:- saturated or unsaturated, linear or branched, oxyethylenated C8to C40alcohols comprising from 1 to 100 mol of ethylene oxide, preferably from 2 to 50 and more particularly from 2 to 40 mol of ethylene oxide and including one or two fatty chains, notably at least one C8-C20, notably C10-C18, alkyl chain;- saturated or unsaturated, oxyethylenated plant oils comprising from 1 to 100 mol of ethylene oxide and preferably from 2 to 50 mol of ethylene oxide;- preferably oxyethylenated esters of saturated or unsaturated, linear or branched, C8to C30acids and of sorbitol; and- (C8-C30)alkyl(poly)glucosides, which are optionally oxyalkylenated, preferably comprising from 0 to 10 mol of ethylene oxide and comprising 1 to 15 glucose units;preferably chosen from saturated or unsaturated, oxyethylenated plant oils comprising from 1 to 100 mol of ethylene oxide and preferably from 2 to 50 mol of ethylene oxide.Composition according to one of the preceding claims, comprising water, in particular at a concentration ranging preferably from 50% to 95% by weight, for example from 55% to 90% by weight, in particular from 60% to 85% by weight, better still from 70% to 85% by weight, relative to the total weight of the composition.Cosmetic treatment process, notably hair treatment process, in particular for washing and / or conditioning keratin materials, notably keratin fibres, in particular the hair, comprising the application to said keratin materials of a cosmetic composition as defined in one of the preceding claims, optionally followed by a rinsing step, after an optional leave-on time.Process according to Claim 12, comprising:- a step (i) consisting in applying a cosmetic composition according to one of Claims 1 to 11 to keratin materials, in particular keratin fibres, better still to the hair,- a washing step (ii), consisting in applying to said keratin materials, in particular keratin fibres, better still the hair, a washing cosmetic composition comprising one or more anionic surfactants and / or one or more amphoteric surfactants.

Images