Cosmetic composition comprising silicone polymers bearing alkoxy(aminomethyl)silyl groups and vitamin E or its derivatives, and cosmetic processing method

Abstract

The present invention relates to a cosmetic composition comprising one or more silicone polymers bearing alkoxy(aminomethyl)silyl functional group(s), and one or more compounds selected from vitamin E and its derivatives, alone or in mixtures. The invention also relates to a cosmetic treatment process, particularly a conditioning process, for keratinous materials, especially hair, using said composition.

Description

Title of the invention: Cosmetic composition comprising silicone polymers bearing alkoxy(aminomethyl)silyl groups and vitamin E or its derivatives, and cosmetic processing method

[0001] The present invention relates to a cosmetic composition, particularly for hair care, comprising a silicone polymer bearing specific functional groups, and a compound selected from vitamin E and its derivatives. The invention also relates to a cosmetic treatment process using this composition.

[0002] It is known, for example from patent application WO2015 / 011259, to use silicone motif polymers bearing alkoxy(aminomethyl)silyl functional groups, to shape hair and give it good cosmetic properties, in particular in terms of soft touch.

[0003] Hair serum-type compositions comprising these same polymers in combination with fatty-chain silicones are also known; these compositions provide good resistance to humidity for the hair, as well as a long-lasting anti-frizz effect, with adequate shine. These compositions also provide thermal protection for the hair, for example, during subsequent use of steam and / or heat.

[0004] These compositions are advantageously transparent. However, it may happen that during their storage, under certain storage conditions, the medium becomes cloudy and loses some of its transparency.

[0005] There is therefore a real need to find a way to formulate these silicone polymers in a medium which remains stable over time and which retains its transparency.

[0006] It has been found that, surprisingly, it was possible to maintain the stability, and therefore the transparency, of the compositions by adding a very particular compound to them.

[0007] The present invention therefore relates to a cosmetic composition comprising:

[0008] (i) one or more silicone polymers bearing functional group(s) alkoxy(aminomethyl)silyl, and

[0009] (ii) one or more compounds selected from, alone or in mixture, vitamin E and its derivatives.

[0010] It has been observed that the composition according to the invention is particularly stable and advantageously transparent, both during its preparation and also after storage for several months.

[0011] By "transparent composition", we mean a composition having a turbidity less than or equal to 200 NTU, NTU being the nephelometric units of measurement of turbidity.

[0012] Turbidity can be measured, for example, with a Model 2100P turbidimeter marketed by the Hach Company, the tubes used for the measurement being referenced AR698A cat 24347-06. Calibration is carried out with formazine and the measurements are carried out at room temperature (25°C).

[0013] The compositions of the invention preferably have a turbidity less than or equal to 150 NTU, better less than or equal to 100 NTU, even better less than or equal to 90 NTU. Preferably, the compositions of the invention have a turbidity ranging from 0.05 to 100 NTU, better from 1 to 95 NTU, better still from 10 to 95 NTU, and even better from 50 to 90 NTU.

[0014] The composition according to the invention can therefore advantageously be in the form of a transparent anhydrous serum.

[0015] The composition according to the invention makes it possible to bring shine and softness to the hair, as well as discipline, which makes it possible to use it to fight against frizz.

[0016] When the composition is applied to the hair before using a heating device such as a hair dryer or straightener, it also provides softness, manageability, and in particular a lasting visual smoothness to the hair.

[0017] Furthermore, it leads to excellent cosmetic properties, particularly in terms of hair volume control and curl definition, especially in humid conditions. In addition, a small amount of product is needed to provide the hair with the desired qualities, thus avoiding the greasy feel often found in cosmetic formulations.

[0018] In what follows, and unless otherwise indicated, the bounds of a range of values ​​are included in that range, in particular in the expressions "between" and "ranging from ... to ...".

[0019] The expression "at least one" used in this description is equivalent to the expression "one or more". 1 / Silicone polymers

[0020] The composition according to the invention therefore comprises one or more silicone polymers bearing alkoxy(aminomethyl)silyl functional group(s). It is understood that a polymer may bear one, but preferably several, alkoxy(aminomethyl)silyl functional groups.

[0021] These polymers preferably have the following formula (I): 7.

[0022] in which:

[0023] - Z2, whether identical or different, represents a group -CH2-NR3R4 in which

[0024] - R3 represents a hydrogen atom or an alkyl group in C1-C6 and R4 represents a C1-C6 alkyl group or a C5-C6 cycloalkyl group, or

[0025] - R3 and R4 form with the nitrogen atom bearing them a heterocycle of 5 to 8 links, comprising 1 to 3 heteroatoms, notably chosen from O, N (NH) or S;

[0026] - Z3, identical or different, represents a C1-C6 alkyl group or an OR5 group with R5 denoting an alkyl group in C1-C6;

[0027] - Ri, identical or different, represents an alkyl group in C1-C6,

[0028] - Ra, Rb, whether identical or different, represent an alkyl group in C1-C2, and

[0029] - n represents an integer greater than 1.

[0030] Preferably, the alkyl groups in C1-C6 are methyl or ethyl groups.

[0031] Preferably, Z2 represents a -CH2-NR3R4 group in which R4 represents a C5-C6 cycloalkyl group and R3 represents a hydrogen atom, or R3 and Ri form with the nitrogen atom on which they are mounted a 6-membered heterocycle, comprising 1 to 3 heteroatoms in total (including the nitrogen atom of the NR3R4 group), preferably 2 heteroatoms in total, in particular 2 heteroatoms chosen from O and N, even better 1 nitrogen atom N and an oxygen atom O, preferably a morpholino group.

[0032] When R4 represents a C5-C6 cycloalkyl group, it preferably represents a cyclohexyl group.

[0033] Preferably, Z3 represents an OR5 group, R5 representing an alkyl group in Cl-C6, in particular in C1-C2 and preferably an OCH3 (methoxy) or OCH2CH3 (ethoxy) group, preferably ethoxy.

[0034] Preferably, Ri is a C1-C2 alkyl group, preferably ethyl.

[0035] Preferably, n varies from 1 to 10000, better from 5 to 1000, and preferably from 8 to 400.

[0036] Preferably, the SiRaRb-[OSiRaRb]n- motif of formula (I) is a motif derived from a linear silicone with a weight average molecular weight (Mw) between 200 and 40000, preferably between 400 and 25000.

[0037] Examples of polymers conforming to formula (I) include:

[0038] - polymers of formula (la):

[0039] in which n represents an integer greater than 1, in particular from 1 to 10000, better from 5 to 1000, and preferably from 8 to 400.

[0040] These polymers can be obtained by reacting a hydroxyl-terminated silicone with triethoxycyclohexylaminomethylsilane, in particular according to the techniques described in document WO2005108495.

[0041] According to a particular example, the polymer (laa), corresponding to the formula (la), is obtained according to the operating scheme presented above, starting from a silicone with an average molecular mass by weight Mw of 4750 g / mol.

[0042] - polymers of formula (Ib)

[0043] in which n represents an integer greater than 1, in particular from 1 to 10000, better from 5 to 1000, and preferably from 8 to 400.

[0044] Polymers of formula (Ib) can be obtained by reaction of a hydroxyl-terminated silicone with diethoxycyclohexylaminomethylmethylsilane, following in particular the techniques described in document WO2005108495.

[0045] According to a particular example, the polymer (Iba), corresponding to the formula (Ib) is obtained according to the operating scheme presented above, starting from a silicone with an average molecular mass by weight Mw of 4750g / mol.

[0046] - the polymers of formula (the):

[0047] in which n represents an integer greater than 1, in particular from 1 to 10000, better from 5 to 1000, and preferably from 8 to 400.

[0048] The polymers of formula (le) can be obtained by reaction of a silicone with hydroxyl terminations, with triethoxymorpholinomethylsilane following in particular the techniques described in document WO2009019165.

[0049] According to a particular example, the polymer (Ica), corresponding to the formula (le) is obtained according to the operating scheme presented above, starting from a silicone with an average molecular mass by weight Mw of 4750 g / mol.

[0050] According to another particular example, the polymer (Icb), corresponding to the formula (le) is obtained according to the operating scheme presented above, starting from a silicone with an average molecular mass by weight of 10600 g / mol.

[0051] According to another particular example, the polymer (Icc), corresponding to the formula (le) is obtained according to the operating scheme presented above, starting from a silicone with an average molecular mass by weight of 14600 g / mol.

[0052] According to another particular example, the polymer (lcd), corresponding to the formula (le) is obtained according to the operating scheme presented above, starting from a silicone with an average molecular mass by weight Mw, of 21100 g / mol.

[0053] According to another particular example, the polymer (Ice), corresponding to the formula (le) is obtained according to the operating scheme presented above, starting from a silicone with an average molecular mass in weight Mw, of 550 g / mol.

[0054] According to another particular example, the polymer (Icf), corresponding to the formula (le) is obtained according to the operating scheme presented above, starting from a silicone with an average molecular mass by weight Mw, of 1000 g / mol.

[0055] According to another particular example, the polymer (Icg), corresponding to the formula (le) is obtained according to the operating scheme presented above, starting from a silicone with an average molecular mass by weight Mw, of 1200 g / mol.

[0056] According to another particular example, the polymer (Ich), corresponding to the formula (le) is obtained according to the operating scheme presented above, starting from a silicone with an average molecular mass by weight Mw of 1700 g / mol.

[0057] - polymers of formula (Id):

[0058] in which n represents an integer greater than 1, in particular from 1 to 10000, better from 5 to 1000, and preferably from 8 to 400.

[0059] Polymers of formula (Id) can be obtained by reaction of a hydroxyl-terminated silicone with diethoxymorpholinomethylmethylsilane following in particular the techniques described in document WO2009019165.

[0060] According to a particular example, the polymer of formula (Ida), corresponding to the formula (Id) is obtained according to the operating scheme presented above, starting from a silicone with an average molecular mass in weight Mw of 4750 g / mol.

[0061] According to another particular example, the polymer of formula (Idb), corresponding to the formula (Id) is obtained according to the operating scheme presented above, starting from a silicone with an average molecular mass in weight Mw of 10600g / mol.

[0062] According to another particular example, the polymer of formula (Idc), corresponding to the formula (Id) is obtained according to the operating scheme presented above, starting from a silicone with an average molecular mass by weight Mw of 14600g / mol.

[0063] According to another particular example, the polymer of formula (Idd), corresponding to the formula (Id) is obtained according to the operational scheme presented above, starting from a silicone with a weight average molecular mass Mw of 21 lOOg / mol.

[0064] Preferably, the silicone polymer(s) bearing alkoxy(aminomethyl)silyl functional group(s) are chosen from among the polymers corresponding to the formula (le) above.

[0065] We can particularly mention the polymers with the INCI name: Bis-(Morpholinomethyl Cl-4 Dialkoxysiloxy) Dimethicone.

[0066] The composition preferably comprises the silicone polymer(s) bearing alkoxy(aminomethyl)silyl functional group(s), in a total content ranging from 0.1 to 20% by weight, preferably from 0.5 to 15% by weight and more particularly from 1 to 10% by weight, or even from 2 to 8% by weight, relative to the total weight of the composition.

[0067] The composition preferably comprises the silicone polymer(s) bearing alkoxy(aminomethyl)silyl functional group(s) selected from the polymers of formula (the), in a total content ranging from 0.1 to 20% by weight, preferably from 0.5 to 15% by weight and more particularly from 1 to 10% by weight, or even from 2 to 8% by weight, relative to the total weight of the composition. 2 / Vitamin E and derivatives

[0068] The composition according to the invention also includes one or more compounds selected from, alone or in mixture, vitamin E and its derivatives.

[0069] Vitamin E is known to exist in several natural forms; this term therefore includes tocopherols and tocotrienols, and more particularly alpha-tocopherol, beta-tocopherol, gamma-tocopherol, delta-tocopherol, alpha-tocotrienol, beta-tocotrienol, gamma-tocotrienol and delta-tocotrienol.

[0070] By vitamin E derivatives, we mean in particular its C1-C4 carboxylic acid esters, among which we can mention acetates and propionates (acetic or propionic acid esters).

[0071] Preferably, vitamin E and / or its derivatives are selected from, alone or in mixture, alpha-tocopherol, beta-tocopherol, gamma-tocopherol, delta-tocopherol, tocopheryl acetate and tocopheryl propionate.

[0072] Better still, vitamin E and / or its derivatives are chosen from alpha-tocopherol, tocopheryl acetate and their mixtures, even better alpha-tocopherol.

[0073] Preferably, the total quantity of compounds selected from vitamin E and its derivatives, in the composition according to the invention, can be at least 0.001% by weight, better at least 0.005% by weight, even better at least 0.01% by weight, relative to the total weight of the composition.

[0074] Preferably, this total quantity can be between 0.001 and 2% by weight, better between 0.001 and 1% by weight, even better between 0.005 and 0.5% by weight, relative to the total weight of the composition.

[0075] Preferably, the total amount of alpha-tocopherol in the composition according to the invention may be at least 0.001% by weight, better at least 0.005% by weight, and even better at least 0.01% by weight, relative to the total weight of the composition. Preferably, this total amount may be between 0.001 and 2% by weight, better between 0.001 and 1% by weight, and even better between 0.005 and 0.5% by weight, relative to the total weight of the composition. 3 / Amino silicones

[0076] The composition according to the invention may further comprise one or more amino silicones, preferably chosen from amino silicones with hydrocarbon terminal groups comprising 8 to 30 carbon atoms.

[0077] Said amino silicones are different from the silicone polymers bearing alkoxy(aminomethyl)silyl functional group(s) previously described.

[0078] Preferably, the composition according to the invention comprises one or more amino silicones, better one or more amino silicones with hydrocarbon terminal groups comprising 8 to 30 carbon atoms.

[0079] Aminated silicone means any silicone comprising at least one primary, secondary, tertiary amine or one quaternary ammonium group.

[0080] The average molecular weights of these amine-based silicones can be measured by Gel Permeation Chromatography (GPC) at room temperature (25°C) in polystyrene equivalents. The columns used are Styragel p-columns. The eluent is THF, and the flow rate is 1 ml / min. 200 µL of a 0.5% by weight silicone solution is injected into the THF. Detection is performed by refractometry and UV measurement.

[0081] Preferably, the amino silicones that may be used in the context of the invention comprise one or more hydrocarbon terminal groups comprising 8 to 30 carbon atoms, said groups being optionally hydroxylated and / or comprising one or more heteroatoms, in particular O.

[0082] By terminal groups, it is understood in the context of the present invention that said groups are located in alpha and omega positions of the main siliconized chain, that is to say at each end of the main siliconized chain.

[0083] The hydrocarbon group comprising 8 to 30 carbon atoms can be an R alkyl chain, linear or branched, saturated or insta-dried, preferably saturated, comprising 8 to 30 carbon atoms, preferably 10 to 28 carbon atoms, in particular 12 to 24 carbon atoms.

[0084] The hydrocarbon group may also include an oxygen atom, and thus be an alkoxylated chain (-OR) with R = alkyl chain, linear or branched, saturated or instaured, preferably saturated, comprising 8 to 30 carbon atoms, preferably 10 to 28 carbon atoms, in particular 12 to 24 carbon atoms.

[0085] Said alkyl chains R can optionally be substituted by one or more hydroxyl groups (OH).

[0086] Amino silicones with hydrocarbon terminal groups that can be used in the context of the invention may in particular be chosen from, alone or in mixture, silicones of formula (II):

[0087] in which:

[0088] - x and y are numbers ranging from 1 to 5000; preferably x ranges from 10 to 2000, and more preferably from 100 to 1000; preferably from 1 to 100;

[0089] - Ri and R2, whether identical or different, denote an alkyl group, linear or branched, saturated or unsaturated, comprising 8 to 30 carbon atoms, preferably 10 to 28 carbon atoms, better 12 to 24 carbon atoms;

[0090] - A designates a linear or branched divalent hydrocarbon radical (alkylene) having 2 to 8 carbon atoms.

[0091] Preferably, A comprises from 3 to 6 carbon atoms; better still, A comprises 4 carbon atoms. Preferably, A is branched.

[0092] Preferably, A can be chosen from the following divalent groups: -CH2CH2CH2 - and -CH2CH(CH3)CH2-,

[0093] Preferably, Ri and R2 are identical.

[0094] Preferably, RI and / or R2, identical or different, are saturated linear alkyl groups, comprising 8 to 30 carbon atoms, preferably 10 to 28, better 12 to 24 carbon atoms, in particular 12 to 20 carbon atoms; particular examples include dodecyl, tetradecyl, pentadecyl, hexadecyl, heptadecyl, octadecyl, nonadecyl and eicosyl groups; preferably, RI and R2, identical or different, are selected from the hexadecyl (cetyl) and octadecyl (stearyl) groups.

[0095] The amine silicone(s) are preferably of formula (II) in which:

[0096] - x goes from 10 to 2000, in particular from 100 to 1000;

[0097] - y goes from 1 to 100;

[0098] - A is a linear or branched divalent hydrocarbon radical (alkylene) comprising of 3 to 6 carbon atoms, and in particular 4 carbon atoms; preferably, A is branched; and more particularly, A is chosen from the following divalent groups: -CH2CH2CH2 and -CH2CH(CH3)CH2-; and

[0099] - Ri and R2, whether identical or different, are saturated linear alkyl groups comprising 8 to 30 carbon atoms, preferably 10 to 28, better 12 to 24 carbon atoms and in particular 12 to 20 carbon atoms; chosen especially from the dodecyl, tetradecyl, pentadecyl, hexadecyl, heptadecyl, octadecyl, nonadecyl and eicosyl groups; preferably, Ri and R2, identical or different, being chosen from the hexadecyl (cetyl) and octadecyl (stearyl) groups.

[0100] Preferably, the amino silicone with terminal hydrocarbon groups comprising 8 to 30 carbon atoms is a bis-cetearylamodimethicone. An example is the amino silicone sold under the name SILSOFT AX by Momentive.

[0101] When present, the composition according to the invention preferably comprises the amino silicone(s) in a total quantity ranging from 0.1 to 8% by weight, preferably from 0.2 to 5% by weight, preferably from 0.5 to 4% by weight, relative to the total weight of the composition.

[0102] When present, the composition according to the invention preferably comprises the amino silicone(s) with terminal hydrocarbon groups in a total quantity ranging from 0.1 to 8% by weight, preferably from 0.2 to 5% by weight, preferably from 0.5 to 4% by weight, relative to the total weight of the composition.

[0103] When present, the composition according to the invention preferably comprises the amino silicone(s) with hydrocarbon terminal groups corresponding to formula (II), in a total quantity ranging from 0.1 to 8% by weight, preferably from 0.2 to 5% by weight, preferably from 0.5 to 4% by weight, relative to the total weight of the composition. 4 / Solvents

[0104] The composition according to the invention advantageously comprises a cosmetically acceptable medium comprising one or more solvents, which may be selected from, alone or in mixture, linear or branched alkanes comprising 8 to 16 carbon atoms and polydimethylsiloxanes. These solvents are advantageously liquid (at 25°C, 1 atm).

[0105] The composition according to the invention can therefore comprise one or more alkanes, linear or branched, preferably branched, comprising from 8 to 16 carbon atoms, better from 10 to 14 carbon atoms, even better 12 carbon atoms.

[0106] The alkane(s) may in particular be chosen from, alone or in mixture, octane, decane, dodecane, tetradecane, hexadecane, isooctane, isodecane, isododecane, isotetradecane, isohexadecane; better from isooctane, isodecane, isododecane, isotetradecane, isohexadecane; even better from isododecane, isododecane, isotetradecane; advantageously isododecane.

[0107] When present, the composition according to the invention preferably comprises the linear or branched alkane(s) comprising 8 to 16 carbon atoms, in a total quantity of 80 to 98% by weight, preferably 85 to 97% by weight, preferably 90 to 96% by weight, relative to the total weight of the composition.

[0108] When present, the composition according to the invention preferably comprises the branched alkane(s) comprising 8 to 16 carbon atoms, in a total quantity of 80 to 98% by weight, preferably 85 to 97% by weight, preferably 90 to 96% by weight, relative to the total weight of the composition.

[0109] The composition according to the invention may comprise one or more polydimethylsiloxanes, which may be volatile or non-volatile.

[0110] Examples include, alone or in mixtures:

[0111] i) cyclic polydimethylsiloxanes comprising 3 to 7 silicon atoms, preferably 4 to 5, such as octamethylcyclotetrasiloxane (D4) and decamethylcyclopentasiloxane (D5).

[0112] ii) linear polydimethylsiloxanes having 2 to 9 silicon atoms, such as decamethyltetrasiloxane (L4) or dodecamethylpentasiloxane (L5).

[0113] iii) linear polydimethylsiloxanes (PDMS) having more than 9 silicon atoms; which may have in particular trimethylsilyl terminal groups and / or hydroxydimethylsilyl terminal groups.

[0114] When present, the composition according to the invention preferably comprises the polydimethylsiloxane(s) in a total quantity ranging from 80 to 98% by weight, of preference of 85 to 97% by weight, preferably 90 to 96% by weight, relative to the total weight of the composition.

[0115] The composition according to the invention preferably comprises the solvent(s) selected from, alone or in mixture, linear or branched alkanes comprising 8 to 16 carbon atoms and polydimethylsiloxanes, in a total quantity of 80 to 98% by weight, preferably 85 to 97% by weight, preferably 90 to 96% by weight, relative to the total weight of the composition. 5 / Other ingredients

[0116] The composition according to the invention is advantageously anhydrous; this means that it comprises less than 0.5% by weight of water, relative to the total weight of the composition, in particular less than 0.1% of water, or even no water at all (0%).

[0117] The compositions according to the invention can advantageously be presented in the form of a hair composition, in particular in the form of a lotion or serum, in particular a conditioner.

[0118] The present invention also relates to a cosmetic treatment process, more particularly a conditioning process, of keratinous materials, in particular keratinous fibers, in particular human, such as hair, comprising the application to said keratinous materials of a composition as described above.

[0119] The application can be done on dry or damp hair, preferably on damp hair.

[0120] Preferably, the composition according to the invention is not rinsed after its application.

[0121] The application step of the composition may optionally be followed, and preferably is followed, by a heat and / or steam application step. This heat and / or steam application step may be carried out using a hairdryer, a hair straightener, a curling iron, or a hair straightener combining heat and steam. The heat and / or steam application step is preferably carried out at a temperature ranging from 40 to 250°C, better from 50 to 240°C, even better from 100 to 230°C, preferably from 110 to 220°C, and even better from 180 to 220°C.

[0122] The invention is illustrated in more detail in the following examples. Example 1

[0123] Compositions A and B according to the invention and the following comparative composition C are prepared, comprising, in % by weight of active ingredient (AI), the following ingredients:

[0124] [Tables 1] Invention A Invention B Invention C Bis-(morpholinomethyl Cl-4 dialkoxysiloxy) di methicone 5 5 5 Bis-cetearyl amodimethicone 2 2 2 Alpha-tocopherol 0.01 0.25 - Dimethicone (2 est) Qsp 100 Qsp 100 Qsp 100

[0125] Cosmetic compositions are obtained which can be used as a hair lotion, to be applied to damp hair, in particular to the lengths and ends, preferably without a subsequent rinsing step (leave-on).

[0126] After applying the composition, heat can be applied to the hair, for example using a hair dryer and / or a straightener.

[0127] It is observed that compositions A and B according to the invention make it possible to tame hair and thus combat frizz; they also provide a great softness to the touch and shine to the hair. The hair does not appear greasy, either to the touch or visually.

[0128] After 2 months of storage at 45°C (in the absence of light), the following observations were made:

[0129] - compositions A and B according to the invention, which contain tocopherol, are always transparent, without cloudiness or opalescence.

[0130] - the comparative composition C is cloudy.

[0131] The invention therefore makes it possible to maintain the stability and transparency of the compositions.

Claims

Demands

1. Cosmetic composition comprising: (i) one or more silicone polymers bearing alkoxy(aminomethyl)silyl functional group(s), and (ii) one or more compounds selected from, alone or in mixture, vitamin E and its derivatives.

2. Composition according to the preceding claim wherein the silicone polymers bearing alkoxy(aminomethyl)silyl functional group(s) are of the following formula (I): _.R, R.îX ? ? Z.—S:— O-Si—O-Si--O—Si—Z, 1 1 1 1 ? R. FL ? 1 ** _Jrt wherein: - Z2, identical or different, represents a -CH2-NR3R4 group in which - R3 represents a hydrogen atom or an alkyl group in Cl-C6 and R4 represents an alkyl group in C1-C6 or a cycloalkyl group in C5-C6, or - R3 and R4 form with the nitrogen atom bearing them a heterocycle of 5 to 8 links and comprising 1 to 3 heteroatoms, in particular selected from O, N (NH) or S;- Z3, identical or different, represents a C1-C6 alkyl group or an OR5 group with R5 denoting a C1-C6 alkyl group; - Ri, identical or different, represents a C1-C6 alkyl group; - Ra, Rb, identical or different, represent a Cl-C2 alkyl group; and - n represents an integer greater than 1; preferably, Z2 represents a -CH2-NR3R4 group in which R4 represents a C5-C6 cycloalkyl group and R3 represents a hydrogen atom, or alternatively, R3 and R4 form with the nitrogen atom to which they are attached a 6-membered heterocycle, comprising 1 to 3 heteroatoms in total, preferably 2 heteroatoms in total, in particular 2 heteroatoms chosen from O and N, even better 1 nitrogen atom N and 1 oxygen atom O, preferably a morpholino group; and / or;

3. when R4 represents a C5-C6 cycloalkyl group, it represents a cyclohexyl group; and / or Z3 represents an OR5 group, R5 representing an alkyl group in C1-C6, especially in C1-C2; preferably an OCH3 (methoxy) or OCH2CH3 (ethoxy) group, preferably ethoxy; and / or Ri is an alkyl group in C1-C2, preferably ethyl; and / or n varies from 1 to 10000, better from 5 to 1000, and preferably from 8 to 400. Composition according to any one of the preceding claims, wherein the silicone polymer(s) bearing alkoxy-(aminomethyl)-silyl functional group(s) are selected from: - polymers of formula (la) - polymers of formula (Ib) (there) - polymers of formula (Id) 0 \ y---OL ' C> N Ç® Me T Me~| 9^ V 1 ii 1 / x—Sr—O-Si—O—Si---O--Si—7 1 l I 1 Me L ^eJn Me (ld) in which n represents an integer greater than 1, notably from 1 to 10000, better from 5 to 1000, and preferably from 8 to 400.

4. Composition according to any one of the preceding claims, comprising the silicone polymer(s) bearing alkoxy-(aminomethyl)-silyl functional group(s), in a total content of 0.1 to 20% by weight, preferably 0.5 to 15% by weight and more particularly 1 to 10% by weight, or even 2 to 8% by weight, relative to the total weight of the composition.

5. Composition according to any one of the preceding claims, wherein the compound or compounds selected from vitamin E and its derivatives are selected from, alone or in mixture, alpha-tocopherol, beta-tocopherol, gamma-tocopherol, delta-tocopherol, tocopheryl acetate and tocopheryl propionate; better from alpha-tocopherol, tocopheryl acetate and mixtures thereof, even better alpha-tocopherol.

6. Composition according to any one of the preceding claims, wherein the compound(s) selected from vitamin E and its derivatives are present in a total amount of at least 0.001% by weight, better at least 0.005% by weight, even better at least 0.01% by weight, relative to the total weight of the composition; preferably, in a total amount of between 0.001 and 2% by weight, better between 0.001 and 1% by weight, even better between 0.005 and 0.5% by weight, relative to the total weight of the composition.

7. A composition according to any one of the preceding claims, comprising one or more amino silicones, preferably with hydrocarbon terminal groups comprising 8 to 30 carbon atoms, in particular selected from, silicones of formula (II), alone or in mixtures:

8. in which: - x and y are numbers ranging from 1 to 5000; preferably x ranges from 10 to 2000, and more preferably from 100 to 1000; preferably y ranges from 1 to 100; - Ri and R2, identical or different, designate an alkyl group, linear or branched, saturated or unsaturated, comprising from 8 to 30 carbon atoms, preferably from 10 to 28 carbon atoms, better from 12 to 24 carbon atoms; - A designates a linear or branched divalent hydrocarbon radical having from 2 to 8 carbon atoms; Preferably A comprises 3 to 6 carbon atoms; better still, 4 carbon atoms; preferably, A is branched; preferably, A is chosen from the following divalent groups: -CH2CH2CH2- and -CH2CH(CH3)CH2-; and / or Preferably, RI and / or R2, identical or different, are saturated linear alkyl groups, comprising 8 to 30 carbon atoms, preferably 10 to 28, better 12 to 24 carbon atoms, in particular 12 to 20 carbon atoms; in particular the dodecyl, tetradecyl, pentadecyl, hexadecyl, heptadecyl, octadecyl, nonadecyl and eicosyl groups; preferably, RI and R2, identical or different, are chosen from the hexadecyl (cetyl) and octadecyl (stearyl) groups. Composition according to claim 7, wherein the amino silicone(s) are of formula (II) in which: - x ranges from 10 to 2,000, in particular from 100 to 1,000; - y goes from 1 to 100; - A is a linear or branched divalent hydrocarbon radical comprising 3 to 6 carbon atoms, and in particular 4 carbon atoms; preferably, A is branched; and more particularly, A is chosen from the following divalent groups: -CH2CH2CH2 and -CH2 CH(CH3)CH2-; and - Ri and R2, identical or different, are saturated linear alkyl groups comprising from 8 to 30 carbon atoms, preferably from 10 to 28, better from 12 to 24 carbon atoms and in particular from 12 to 20 carbon atoms; chosen especially from the dodecyl, tetradecyl, pentadecyl, hexadecyl, heptadecyl, octadecyl, nonadecyl and eicosyl groups; preferably, Ri and R2, identical or different, being chosen from the hexadecyl (cetyl) and octadecyl (stearyl) groups.

9. Composition according to any one of claims 7 to 8, comprising the amino silicone(s) in a total amount of 0.1 to 8% by weight, preferably 0.2 to 5% by weight, preferably 0.5 to 4% by weight, relative to the total weight of the composition.

10. Composition according to any one of the preceding claims, comprising one or more solvents, preferably selected from, alone or in mixture, linear or branched alkanes comprising 8 to 16 carbon atoms, better 10 to 14 carbon atoms, even better 12 carbon atoms, and polydimethylsiloxanes.

11. Composition according to claim 10, wherein the alkane or alkanes are selected from, alone or in mixture, octane, decane, dodecane, tetradecane, hexadecane, isooctane, isodecane, isododecane, isotetradecane, isohexadecane; preferably from isooctane, isodecane, isododecane, isotetradecane, isohexadecane; even better from isododecane, isododecane, isotetradecane; advantageously isododecane.

12. A composition according to any one of claims 10 to 11, wherein the polydimethylsiloxane(s) are selected from, alone or in mixtures: i) cyclic polydimethylsiloxanes having from 3 to 7 silicon atoms, preferably 4 to 5, such as octamethylcyclotetrasiloxane and decamethylcyclopentasiloxane; ii) linear polydimethylsiloxanes having from 2 to 9 silicon atoms, such as decamethyltetrasiloxane or dodecamethylpentasiloxane; iii) linear polydimethylsiloxanes (PDMS) having more than 9 silicon atoms; which may, in particular, have groups terminal trimethylsilyl and / or terminal hydroxydimethylsilyl groups.

13. Composition according to any one of claims 10 to 12, comprising the solvent(s) selected from, alone or in mixture, linear or branched alkanes comprising 8 to 16 carbon atoms and polydimethylsiloxanes, in a total amount of 80 to 98% by weight, preferably 85 to 97% by weight, preferably 90 to 96% by weight, relative to the total weight of the composition.

14. Composition according to any one of the preceding claims, said composition being anhydrous, in particular comprising less than 0.5% by weight of water, relative to the total weight of the composition, in particular less than 0.1% of water, or even no water at all (0%).

15. Composition according to any one of the preceding claims, said composition being transparent, in particular having a turbidity of less than or equal to 200 NTU, preferably a turbidity of less than or equal to 150 NTU, better less than or equal to 100 NTU, even better less than or equal to 90 NTU; preferably, a turbidity of 0.05 to 100 NTU, better from 1 to 95 NTU, better still from 10 to 95 NTU, and even better from 50 to 90 NTU.

16. A cosmetic treatment process, more particularly a conditioning process, for keratinous materials, in particular keratinous fibers, such as hair, comprising applying to said keratinous materials a composition according to any one of claims 1 to 15, optionally followed by a step of applying heat and / or steam.