FR3109730A1 - Aerosol device containing a composition comprising at least one silicone acrylic copolymer and at least one propellant - Google Patents

Abstract

Aerosol device containing a composition comprising at least one silicone acrylic copolymer and at least one propellant The present invention relates to an aerosol device containing a composition comprising at least one or more silicone acrylic copolymer (s) and from 30 to 70% by weight of at least one or more propellant (s) ). The present invention also relates to a process for shaping keratin fibers, in particular human keratin fibers such as the hair, comprising a step of applying to said keratin fibers a composition delivered from an aerosol device such as previously defined.

Description

Aerosol device containing a composition comprising at least one silicone acrylic copolymer and at least one propellant

The present invention relates to an aerosol device containing a composition comprising at least one or more silicone acrylic copolymer(s) and from 30 to 75% by weight of at least one or more propellant(s). ).

The hair products for shaping and/or maintaining the hairstyle that are most widespread on the cosmetics market are compositions to be sprayed, such as lacquers and sprays or compositions distributed in the form of mousses. Styling products are usually used to build, structure the hairstyle and give it hold. They essentially consist of an alcoholic or aqueous solution and one or more materials, generally polymer resins, also called fixing polymers. These polymers allow the formation of a sheathing film on the hair and/or microwelds between the hairs, thus ensuring the maintenance of the hairstyle.

After shaping, the hair is subjected to stresses, for example heat, humidity, rain, sebum, and gentle and repeated mechanical stresses, which leads to a reduction in the fixing performance of the hairstyle after a few hours and therefore an alteration in the hold over time.

However, the effects provided by these technologies disappear during the first shampoo and it is necessary to reapply them to be able to obtain the desired effect. This imposes a more or less long and tedious routine on the consumer. For example, for a blow-dry product, after applying the styling spray, the product must be evenly distributed over the entire hair and then blow-dried, which can range from 5 to 45 minutes depending on the desired result.

Conversely, long-lasting products make it possible to permanently modify the structure of the fiber by breaking (reducing) the disulphide bonds which impose the original shape of the hair and then re-bridging (e.g. oxidation of cysteines to cystine after an action mechanics such as the application of curlers in the case of perms). However, these products must be reapplied at the root as soon as the hair grows to maintain a homogeneous result. The results are irreversible and sensitize the hair. The superposition of straightening products, for example, can cause discomfort and, in the long term, cause real damage to the fiber, which can lead to breakage.

The objective of a semi-permanent styling product is to provide satisfaction on the durability of the styling/styling effects after one or more shampoos while preserving the integrity of the fiber in order to save time and safety. to the consumer. By styling/capping effect, we mean discipline performance, corporization, curl definition, control of volume or volume contribution depending on the nature of the hair, shine, ease of shaping by natural drying, brushing and/or or flat pliers, styling. Ideally, this type of product is also expected to be removable by a gesture or by a composition acting as a make-up remover.

In addition, the product must not generate static electricity.

There is therefore a need to formulate a treatment, in particular a treatment which gives the treated fiber a sheathing of the fiber, which meets the following criteria:

• Be adherent to the fiber and remain noticeable after several shampoos,
• Allow to shape the hair easily and durably,
• Apply easily and precisely at the fiber roots,
• Provide good cosmetic qualities,
• Be easy to use without risk of damaging the hair,
• Be compatible with hair treatments traditionally used (shampoos, conditioners, colorings) but also with sebum.

It has now been discovered that the use of an aerosol device comprising a composition containing at least one silicone acrylic copolymer and at least one propellant, optionally combined with the use of a heating tool, for example a hair dryer or a straightener generates a coating around the hair fibre, remanent to shampoos, which provides the desired styling properties while being respectful of the fibre. This sheathing is remanent to shampoos. In addition, this composition applied with the aerosol device has good qualities of use, in particular in terms of distribution at the root of the fibers, in particular it makes it possible to limit stickiness and dusting during application, while conferring good cosmetic properties for the hair, in particular in terms of detangling dry and damp hair, and of individualization.

The use of an aerosol device makes it possible to facilitate the application and precise application of the composition at the level of the hair root, and thus makes it possible to provide volume to the hairstyle.

In addition, the composition according to the invention makes it possible to space out the shampoos by limiting the regreasing of the treated hair, confers better control of the volume, a reduction in frizz and a gain in discipline.

The subject of the invention is therefore an aerosol device containing a composition comprising:
(a) at least one silicone acrylic copolymer comprising at least the following units:
- at least one polydimethylsiloxane (PDMS) unit comprising at least two polymerizable radical groups chosen from an acrylic or methacrylic group having from 1 to 6 carbon atoms, and
- at least one alkyl acrylate or methacrylate unit;
(b) one or more propellant(s) in an amount ranging from 30 to 75% by weight relative to the total weight of the composition.

The present invention also relates to a process for shaping keratin fibers, in particular human keratin fibers such as the hair, comprising a step of applying to said keratin fibers a composition delivered from an aerosol device such as previously defined.

A subject of the invention is also the use of a composition delivered from an aerosol device as defined above for shaping keratin fibres, in particular human keratin fibers such as the hair.

It has thus been observed that the fibers thus treated have a remanent sheathing to shampoos and makes it possible, in particular, to improve the shaping of the hair, in particular in terms of gain in volume and remanence of the volume as well as in terms of definition. curls. In addition, the composition used in the process has good qualities for use on application (distribution) and after shampooing (detangling dry and damp hair, individualization).

By “shampoo-retentive sheathing” is meant within the meaning of the present invention that the shaping obtained persists after a shampoo, preferably after 3 shampoos or more.

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

The invention is not limited to the examples illustrated. The characteristics of the various examples can in particular be combined within variants that are not illustrated.

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

Furthermore, the expressions “at least one” and “at least” used in the present description are equivalent respectively to the expressions “one or more” and “greater or equal”.

By “keratin fibres” is meant, within the meaning of the present invention, human keratin fibers and more particularly the hair.

By “polymer” is meant within the meaning of the present invention any material obtained by the (co)polymerization of monomers. These monomers can be identical or different. Unless otherwise indicated, the term polymers therefore encompasses both homopolymers and copolymers.

Unless otherwise indicated, when the compounds are mentioned in the present application, it is also meant their optical isomers, their geometric isomers, their tautomers, their salts or their solvates, alone or as a mixture. In particular, by acrylic polymers, crotonic polymers, diols comprising at least one carboxylic acid group, is also meant their corresponding salts.

■ Membership

The aerosol device according to the invention contains a composition comprising (a) one or more silicone acrylic copolymers as described below , (b) one or more propellants in an amount ranging from 30 to 75% by weight relative to the weight composition total.

This composition is preferably a composition for shaping keratin fibres, in particular human keratin fibers such as the hair.

Siliconized acrylic copolymer (a)

The composition comprises at least one silicone acrylic copolymer comprising at least the following units:
- at least one polydimethylsiloxane (PDMS) unit comprising at least two polymerizable radical groups preferably chosen from an acrylic or methacrylic group having from 13 to 6 carbon atoms, and
- at least one alkyl acrylate or methacrylate unit.

Preferably, the copolymer according to the invention is insoluble in water. By insoluble in water is meant, within the meaning of the present invention, a compound that is insoluble in water at ordinary temperature (25° C.) and at atmospheric pressure (760 mm Hg or 1.013.105 Pa). Preferably, the copolymer according to the invention has a solubility in water of less than 5%, better still less than 1% and even more preferentially less than 0.1%.

By “alkyl acrylate or methacrylate unit”, is meant a unit derived from an alkyl acrylate or methacrylate monomer.

Preferably, the silicone acrylic copolymer comprises at least two alkyl acrylate or methacrylate units.

The term “polydimethylsiloxanes” (also abbreviated as PDMS) is intended to denote, in accordance with general acceptance, any organosilicon polymer or oligomer with a linear structure, of variable molecular weight, obtained by polymerization and/or polycondensation of suitably functionalized silanes, and consisting essentially of a repetition of main units in which the silicon atoms are interconnected by oxygen atoms (siloxane bond -Si-O-Si-), comprising methyl radicals directly bonded via of a carbon atom on said silicon atoms.

The PDMS chains which can be used to obtain the copolymer used according to the invention comprise at least two polymerizable radical groups, preferably located on each end of the chain, that is to say that the PDMS can have for example a radical group polymerizable on each of the two ends of the chain.

By "polymerizable radical group" is meant a radical capable of polymerizing with other polymerizable radical groups or monomers.

By “end of the chain”, is meant the terminal group of the polydimethylsiloxane unit consisting of a dimethylsiloxane group, the polydimethylsiloxane unit comprising two ends each having a terminal group (i.e. dimethylsiloxane group).

Preferably, the polydimethylsiloxane (PDMS) unit comprises at least one polymerizable radical group located on each end of the chain, the polymerizable radical group being chosen from an acrylic or methacrylic group having from 1 to 6 carbon atoms.

Preferably, the polymerizable radical group is a CH ₂ =CH-CO-O-R1- group, where R1 represents an alkyl radical comprising from 1 to 3 carbon atoms.

The copolymers used in the composition are generally obtained according to the usual methods of polymerization and grafting, for example by radical polymerization (A) of a polyalkylsiloxane comprising at least two polymerizable radical groups (for example located on each end of the chain) and (B) at least one acrylic or methacrylic monomer, such as acrylic acid, methacrylic acid or one of their esters, as described for example in documents US-A-5,061,481 and US-A-5,219,560.

Preferably, the composition comprises at least one silicone acrylic copolymer, comprising at least the following units:
- at least one polydimethylsiloxane (PDMS) unit comprising at least two polymerizable radical groups chosen from an acrylic or methacrylic group having from 1 to 6 carbon atoms, and,
- at least one alkyl acrylate or methacrylate unit, the alkyl radical comprising from 1 to 30 carbon atoms, preferentially from 1 to 22 carbon atoms, better still 1 to 10 carbon atoms, and more preferentially 2 to 6 carbon atoms .

Preferably, the composition comprises at least one silicone acrylic copolymer, comprising at least the following units:
- at least one polydimethylsiloxane (PDMS) unit comprising at least two polymerizable radical groups chosen from a CH ₂ = CH – CO – O – R1- group, where R1 represents an alkyl radical comprising from 1 to 3 carbon atoms; And
- at least one C ₁ -C ₃₀ alkyl acrylate or methacrylate unit, preferably C ₁ -C ₂₂ , preferably C ₁ -C ₁₀ , better still C ₂ -C ₆ .

Even more particularly, the composition according to the invention comprises at least one silicone acrylic copolymer comprising at least the following units:
- at least one polydimethylsiloxane (PDMS) unit comprising at least two polymerizable radical groups chosen from a CH ₂ = CH – CO – O – R1- group, where R1 represents an alkyl radical comprising from 1 to 3 carbon atoms; And
- at least one C ₁ -C ₂₂ alkyl acrylate or methacrylate unit, preferably C ₁ -C ₁₀ , better still C ₂ -C ₆ .

Even more particularly, the silicone acrylic copolymer according to the invention is a copolymer with the INCI name isobutylmethacrylate/bis-hydroxypropyl dimethicone acrylate copolymer, such as for example the compound marketed by the company GRANT INDUSTRIES under the name GRANACRYSIL BMAS.

It is an isobutyl methacrylate/bis-hydroxypropyl dimethicone acrylate copolymer, in solution in isododecane.

The silicone acrylic copolymer(s) may (may) be present in a total amount varying from 0.05 to 15% by weight, preferably from 0.1 to 10% by weight , better still 0.5 to 5% by weight relative to the total weight of the composition.

Propellant (b)

The aerosol device according to the invention comprises one or more propellant(s) (b) .

The propellants can be chosen from compressed gases or liquefied gases.

Examples of compressed gases include air, nitrogen, carbon dioxide (or carbon dioxide), and mixtures thereof. Preferably, the compressed gas is carbon dioxide.

By way of example of liquefied gases, mention may be made of dimethyl ether, chlorinated and/or fluorinated hydrocarbons, such as trichlorofluoromethane, dichlorodifluoromethane, chlorodifluoromethane, 1,1,1,2-tetrafluoroethane, chloropentafluoroethane, 1 -chloro-1,1-difluoroethane, 1,1-difluoroethane; volatile hydrocarbons, such as in particular C ₃ -C ₅ alkanes, such as propane, isopropane, n-butane, isobutane, pentane, alone or as a mixture. Preferably, the hydrocarbons are chosen from propane, isopropane, n -butane, isobutane, alone or as a mixture.

According to a particular embodiment, the propellant preferably comprises one or more liquefied gases, preferably chosen from C ₃ -C ₅ alkanes and in particular propane, n-butane, isobutane, alone or in blend.

According to the invention, the propellant(s) is (are) present in the composition comprising the other ingredients, or else is (are) present in a separate compartment from the compartment comprising the other ingredients of the composition, within the aerosol device.

When the propellant(s) (b) is (are) in the composition, it (they) is (are) present in a total amount ranging from 30 to 75% by weight, preferably from 35 to 75% by weight, more preferably from 40 to 70% by weight, better still from 45 to 65% by weight relative to the total weight of the composition.

Fatty body(ies)

According to a preferred embodiment, the composition according to the invention also comprises at least one or more fatty substances.

By “fatty substance”, is meant an organic compound insoluble in water at ordinary temperature (25° C.) and at atmospheric pressure (760 mm Hg or 1,013.105 Pa) (solubility less than 5% and preferably 1% even more preferably at 0.1% by weight). They have in their structure at least one hydrocarbon chain comprising at least 6 carbon atoms or a sequence of at least two siloxane groups. In addition, fatty substances are generally soluble in organic solvents under the same temperature and pressure conditions, such as chloroform, dichloromethane, carbon tetrachloride, ethanol, benzene, toluene, tetrahydrofuran ( THF), vaseline oil or decamethylcyclopentasiloxane.

The fatty substances of the invention do not contain salified carboxylic acid groups.

In addition, the fatty substances of the invention are not (poly)oxyalkylenated or (poly)glycerolated ethers.

More particularly, the fatty substance or substances are chosen from C ₆ -C ₁₆ alkanes, alkanes with more than 16 carbon atoms, non-silicone oils of animal origin, triglycerides of vegetable or synthetic origin, oils fluorinated fatty alcohols, fatty acid and/or fatty alcohol esters different from triglycerides and non-silicone waxes, in particular vegetable waxes, non-silicone waxes, silicones different from the silicone acrylic copolymers described above, and mixtures thereof .

By “oil”, is meant a “fatty substance” which is liquid at ambient temperature (25° C.), and at atmospheric pressure (760 mm Hg or 1.013.105 Pa).

The term "non-silicone oil" means an oil containing no silicon (Si) atom and a "silicone oil" means an oil containing at least one silicon atom.

The oil can be volatile or non-volatile.

By "volatile oil" is meant an oil capable of evaporating on contact with the skin in less than one hour, at ambient temperature and atmospheric pressure. Volatile oil is a volatile cosmetic oil, liquid at room temperature. More precisely, a volatile oil has an evaporation rate between 0.01 and 200 mg/cm2/min, limits included.

By “non-volatile oil”, is meant an oil remaining on the skin or the keratin fiber at ambient temperature and atmospheric pressure. More precisely, a non-volatile oil has an evaporation rate strictly lower than 0.01 mg/cm2/min.

It is recalled that the alcohols, esters and fatty acids have more particularly at least one hydrocarbon group, linear or branched, saturated or unsaturated, comprising 6 to 30, better still 8 to 30 carbon atoms, optionally substituted, in particular by one or several hydroxyl groups (in particular 1 to 4). If they are unsaturated, these compounds can comprise one to three carbon-carbon double bonds, conjugated or not.

Preferably, the composition comprises one or more oil(s) chosen from C8-C16 alkanes and/or mixtures thereof.

As regards the C8-C16 alkanes, the latter can be linear, branched, possibly cyclic.

Mention may in particular be made of branched C8-C16 alkanes such as C8-C16 iso-alkanes (also called isoparaffins), isododecane, isodecane, isohexadecane and, for example, the oils sold under the trade names of Isopar or Permetyl, and mixtures thereof.

Mention may also be made of linear alkanes, preferably of plant origin, comprising from 7 to 15 carbon atoms, in particular from 9 to 14 carbon atoms, and more particularly from 11 to 13 carbon atoms.

By way of example of a linear alkane suitable for the invention, mention may be made of n-heptane (C7), n-octane (C8), n-nonane (C9), n-decane (C10), n-undecane (C11), n-dodecane (C12), n-tridecane (C13), n-tetradecane (C14), -pentadecane (C15), and mixtures thereof, and in particular the mixture of n -undecane (C11) and n-tridecane (C13) described in example 1 of application WO2008/155059 from Cognis.

Mention may also be made of n-dodecane (C12) and n-tetradecane (C14) sold by Sasol respectively under the references PARAFOL 12-97 and PARAFOL 14-97, as well as their mixtures.

By way of example of alkanes suitable for the invention, mention may be made of the alkanes described in patent applications WO 2007/068371 and WO2008/155059. These alkanes are obtained from fatty alcohols, themselves obtained from copra or palm oil.

According to a particular embodiment, the composition comprises isododecane. Such a compound is for example isododecane sold under the reference ISODODECANE by INEOS.

Preferably, the composition according to the invention comprises one or more oil(s) chosen from C8-C16 alkanes, more preferably from isododecane, isohexadecane, tetradecane and/or mixtures thereof. Linear or branched alkanes, of mineral or synthetic origin, with more than 16 carbon atoms, are preferably chosen from paraffin oils, petroleum jelly, petroleum jelly, polydecenes, hydrogenated polyisobutene such as Parléam® , and mixtures thereof.

The triglycerides of vegetable or synthetic origin are preferably chosen from liquid triglycerides of fatty acids comprising from 6 to 30 carbon atoms such as triglycerides of heptatonic or octanoic acids or, more particularly, from those present in vegetable oils such as as, for example, sunflower, corn, soya, pumpkin, grapeseed, sesame, hazelnut, apricot, macadamia, arara, castor, avocado oil, jojoba, shea butter oil or synthetic triglycerides of caprylic/capric acids such as those sold by Stearineries Dubois or those sold under the names Miglyol® 810, 812 and 818 by Dynamit Nobel, and mixtures thereof.

As fluorinated oils, mention may be made of perfluoromethylcyclopentane and perfluoro-1,3-dimethylcyclohexane, sold under the names “FLUTEC® PC1” and “FLUTEC® PC3” by the company BNFL Fluorochemicals; perfluoro-1,2-dimethylcyclobutane; perfluoroalkanes such as dodecafluoropentane and tetradecafluorohexane, sold under the names “PF 5050®” and “PF 5060®” by the company 3M, or else bromoperfluorooctyl sold under the name “FORALKYL®” by the company Atochem; nonafluoro-methoxybutane and nonafluoroethoxyisobutane; perfluoromorpholine derivatives, such as 4-trifluoromethyl burgperfluoromorpholine sold under the name "PF 5052®" by the company 3M.

The fatty alcohols suitable for the implementation of the invention are more particularly chosen from saturated or unsaturated, linear or branched alcohols, comprising from 6 to 30 carbon atoms, preferably from 8 to 30 carbon atoms. Mention may be made, for example, of cetyl alcohol, isostearyl alcohol, stearyl alcohol and their mixture (cetylstearyl alcohol), octyldodecanol, 2-butyloctanol, 2-hexyldecanol, 2-undecylpentadecanol, oleyl alcohol , linolenic alcohol, ricinoleic alcohol, undecylenic alcohol or linoleic alcohol, and mixtures thereof.

As regards fatty acid and/or fatty alcohol esters, advantageously different from the triglycerides mentioned above and from non-silicone waxes; mention may in particular be made of esters of saturated or unsaturated aliphatic mono or polyacids, linear C ₁ -C ₂₆ or branched C ₃ -C ₂₆ and of saturated or unsaturated aliphatic mono or polyalcohols, linear C ₁ -C ₂₆ or branched C ₃ -C ₂₆ , the total carbon number of the esters being greater than or equal to 6, more advantageously greater than or equal to 10.

Among the monoesters, mention may be made of dihydroabietyl behenate; octyldodecyl behenate; isocetyl behenate; cetyl lactate; C12-C15 alkyl lactate; isostearyl lactate; lauryl lactate; linoleyl lactate; oleyl lactate; (iso)stearyl octanoate; isocetyl octanoate; octyl octanoate; cetyl octanoate; decyl oleate; isocetyl isostearate; isocetyl laurate; isocetyl stearate; isodecyl octanoate; isodecyl oleate; isononyl isononanoate; isostearyl palmitate; methyl acetyl ricinoleate; myristyl stearate; octyl isononanoate; 2-ethylhexyl isononate; octyl palmitate; octyl pelargonate; octyl stearate; octyldodecyl erucate; oleyl erucate; ethyl and isopropyl palmitates, ethyl-2-hexyl palmitate, 2-octyldecyl palmitate, alkyl myristates such as isopropyl, butyl, cetyl, 2-octyldodecyl myristate , mirystyl, stearyl hexyl stearate, butyl stearate, isobutyl stearate; dioctyl malate, hexyl laurate, 2-hexyldecyl laurate, and mixtures thereof.

Still in the context of this variant, it is also possible to use the esters of C ₄ -C ₂₂ di or tricarboxylic acids and of C ₁ -C ₂₂ alcohols and the esters of mono di or tricarboxylic acids and of C 1 -C 22 alcohols. C ₂ -C ₂₆ C ₁ -C ₂₆ di, tri, tetra or pentahydroxy.

Mention may in particular be made of: diethyl sebacate; diisopropyl sebacate; diisopropyl adipate; di n-propyl adipate; dioctyl adipate; diisostearyl adipate; dioctyl maleate; glyceryl undecylenate; octyldodecyl stearoyl stearate; pentaerythrityl monoricinoleate; pentaerythrityl tetraisononanoate; pentaerythrityl tetrapelargonate; pentaerythrityl tetraisostearate; pentaerythrityl tetraoctanoate; propylene glycol dicaprylate; propylene glycol dicaprate, tridecyl erucate; triisopropyl citrate; triisotearyl citrate; glyceryl trilactate; glyceryl trioctanoate; trioctyldodecyl citrate; trioleyl citrate, propylene glycol dioctanoate; neopentyl glycol diheptanoate; diethylene glycol diisanonate; and polyethylene glycol distearates, and mixtures thereof.

Among the esters mentioned above, it is preferred to use ethyl, isopropyl, myristyl, cetyl, stearyl palmitates, ethyl-2-hexyl palmitate, 2-octyldecyl palmitate, myristates of alkyls such as isopropyl, butyl, cetyl, 2-octyldodecyl myristate, hexyl stearate, butyl stearate, isobutyl stearate; dioctyl malate, hexyl laurate, 2-hexyldecyl laurate and isononyl isononanate, cetyl octanoate, and mixtures thereof.

The composition may also comprise, as fatty ester, esters and di-esters of C ₆ -C ₃₀ fatty acid sugars, preferably C ₁₂ -C _{22 fatty} acids. It is recalled that the term “sugar” is understood to mean oxygenated hydrocarbon compounds which have several alcohol functions, with or without an aldehyde or ketone function, and which contain at least 4 carbon atoms. These sugars can be monosaccharides, oligosaccharides or polysaccharides.

Suitable sugars include, for example, sucrose (or sucrose), glucose, galactose, ribose, fucose, maltose, fructose, mannose, arabinose, xylose, lactose, and derivatives thereof. in particular alkylated, such as methylated derivatives such as methylglucose.

The esters of sugars and of fatty acids can be chosen in particular from the group comprising the esters or mixtures of esters of sugars described previously and of C ₆ -C ₃₀ , preferably C ₁₂ -C ₂₂ , linear fatty acids. or branched, saturated or unsaturated. If they are unsaturated, these compounds can comprise one to three carbon-carbon double bonds, conjugated or not.

The esters according to this variant can also be chosen from mono-, di-, tri- and tetra-esters, polyesters and mixtures thereof.

These esters can be for example oleate, laurate, palmitate, myristate, behenate, cocoate, stearate, linoleate, linolenate, caprate, arachidonates, or their mixtures such as in particular the mixed oleo-palmitate, oleo-stearate, palmito-stearate esters.

More particularly, the mono- and di-esters and in particular the mono- or di-oleate, stearate, behenate, oleopalmitate, linoleate, linolenate, oleostearate, of sucrose, of glucose or of methylglucose are used.

Mention may be made, by way of example, of the product sold under the name Glucate® DO by the company Amerchol, which is a methylglucose dioleate.

Mention may also be made, by way of examples of esters or mixtures of fatty acid sugar esters:

- the products sold under the names F160, F140, F110, F90, F70, SL40 by the company Crodesta, respectively designating sucrose palmito-stearates formed of 73% monoester and 27% di- and tri-ester, of 61 % monoester and 39% di-, tri-, and tetra-ester, 52% monoester and 48% di-, tri-, and tetra-ester, 45% monoester and 55% di-, tri-, and tetra-ester, 39% monoester and 61% di-, tri-, and tetra-ester, and sucrose monolaurate;

- the products sold under the name Ryoto Sugar Esters, for example referenced B370 and corresponding to sucrose behenate formed from 20% monoester and 80% di-triester-polyester;

- sucrose mono-di-palmito-stearate marketed by the company Goldschmidt under the name Tegosoft® PSE.

The non-silicone wax or waxes are chosen in particular from Carnauba wax, Candelila wax, and Alfa wax, paraffin wax, ozokerite, vegetable waxes such as olive wax, rice wax , hydrogenated jojoba wax or absolute flower waxes such as essential blackcurrant flower wax sold by the company BERTIN (France), animal waxes such as beeswax, or modified beeswax (cerabellina) ; other waxes or waxy raw materials that can be used according to the invention are in particular marine waxes such as that sold by the company SOPHIM under the reference M82, polyethylene or polyolefin waxes in general.

The silicones, different from the silicone acrylic copolymers described above, which can be used in the cosmetic composition of the present invention, are volatile or non-volatile, cyclic, linear or branched silicones, modified or not by organic groups, having a viscosity of 5.10 ^-6 at 2.5 m ² /s at 25° C. and preferably 1.10 ^-5 at 1 m ² /s.

The silicones which can be used in accordance with the invention can be in the form of oils, waxes, resins or gums, preferably silicone oils.

Preferably, the silicone is chosen from polydialkylsiloxanes, in particular polydimethylsiloxanes (PDMS), and organo-modified polysiloxanes comprising at least one functional group chosen from poly(oxyalkylene) groups, amino groups and alkoxy groups.

The organopolysiloxanes are defined in more detail in Walter NOLL's work "Chemistry and Technology of Silicones" (1968), Academie Press. They can be volatile or non-volatile.

When they are volatile, the silicones are more particularly chosen from those having a boiling point of between 60° C. and 260° C., and more particularly still from:

cyclic polydialkylsiloxanes comprising from 3 to 7, preferably from 4 to 5 silicon atoms. These are, for example, octamethylcyclotetrasiloxane marketed in particular under the name VOLATILE SILICONE® 7207 by UNION CARBIDE or SILBIONE® 70045 V2 by RHODIA, decamethylcyclopentasiloxane marketed under the name VOLATILE SILICONE® 7158 by UNION CARBIDE, and SILBIONE ® 70045 V5 by RHODIA, as well as their mixtures.

Mention may also be made of cyclocopolymers of the dimethylsiloxane/methylalkylsiloxane type, such as SILICONE VOLATILE® FZ 3109 marketed by the company UNION CARBIDE, of formula:

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

(ii) linear volatile polydialkylsiloxanes having 2 to 9 silicon atoms and having a viscosity of less than or equal to 5.10 ^-6 m²/s at 25° C. This is, for example, decamethyltetrasiloxane sold in particular under the name "SH 200" by TORAY SILICONE. Silicones falling into this class are also described in the article published in Cosmetics and Toiletries, Vol. 91, Jan. 76, P. 27-32 - TODD & BYERS "Volatile Silicone fluids for cosmetics".

Nonvolatile polydialkylsiloxanes, polydialkylsiloxane gums and resins, polyorganosiloxanes modified with the above organofunctional groups and mixtures thereof are preferably used.

These silicones are more particularly chosen from polydialkylsiloxanes, among which there may be mentioned mainly polydimethylsiloxanes containing trimethylsilyl end groups. The viscosity of silicones is measured at 25°C according to ASTM 445 Appendix C.

Among these polydialkylsiloxanes, mention may be made, without limitation, of the following commercial products:

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

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

- the oils of the 200 series from the company DOW CORNING such as DC200 having a viscosity of 60,000 mm2/s;

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

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

In this class of polydialkylsiloxanes, mention may also be made of the products marketed under the names “ABIL WAX® 9800 and 9801” by the company GOLDSCHMIDT which are polydialkyl (C ₁ -C ₂₀ ) siloxanes.

The silicone gums that can be used in accordance with the invention are in particular polydialkylsiloxanes, preferably polydimethylsiloxanes having high number-average molecular masses of between 200,000 and 1,000,000, used alone or as a mixture in a solvent. This solvent can be chosen from volatile silicones, polydimethylsiloxane oils (PDMS), polyphenylmethylsiloxane oils (PPMS), isoparaffins, polyisobutylenes, methylene chloride, pentane, dodecane, tridecane or mixtures thereof.

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

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

- mixtures of a polydimethylsiloxane gum and a cyclic silicone such as the product SF 1214 Silicone Fluid from GENERAL ELECTRIC, this product is an SF 30 gum corresponding to a dimethicone, having a number-average molecular weight of 500,000 dissolved in SF 1202 Silicone Fluid oil corresponding to decamethylcyclopentasiloxane;

- mixtures of two PDMS of different viscosities, and more particularly of a PDMS rubber and a PDMS oil, such as the product SF 1236 from GENERAL ELECTRIC. The product SF 1236 is the mixture of an SE 30 rubber defined above having a viscosity of 20 m²/s and an SF 96 oil with a viscosity of 5.10-6 m²/s. This product preferably comprises 15% SE 30 rubber and 85% SF 96 oil.

The organopolysiloxane resins which can be used in accordance with the invention are crosslinked siloxane systems containing the units:

R ₂ SiO _2/2 , R ₃ SiO _1/2 , RSiO _3/2 and SiO _4/2

in which R represents an alkyl having 1 to 16 carbon atoms. Among these products, those which are particularly preferred are those in which R denotes a lower C ₁ -C ₄ alkyl group, more particularly methyl.

Mention may be made, among these resins, of the product marketed under the name “DOW CORNING 593” or those marketed under the names “SILICONE FLUID SS 4230 and SS 4267” by the company GENERAL ELECTRIC and which are silicones of dimethyl/trimethyl siloxane structure.

Mention may also be made of the resins of the trimethylsiloxysilicate type marketed in particular under the names X22-4914, X21-5034 and X21-5037 by the company SHIN-ETSU.

The organomodified silicones which can be used in accordance with the invention are silicones as defined previously and comprising in their structure one or more organofunctional groups attached via a hydrocarbon group.

Besides, the silicones described above, the organomodified silicones can be polydiaryl siloxanes, in particular polydiphenylsiloxanes, and polyalkyl-arylsiloxanes functionalized with the organofunctional groups mentioned above.

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

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

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

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

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

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

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

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

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

- polyethyleneoxy and/or polypropyleneoxy groups possibly comprising C ₆ -C ₂₄ alkyl groups such as the products called dimethicone copolyol marketed by the company DOW CORNING under the name DC 1248 or the oils SILWET® L 722, L 7500, L 77 , L 711 from the company UNION CARBIDE and the alkyl (C ₁₂ )-methicone copolyol marketed by the company DOW CORNING under the name Q2 5200;

- amino groups, substituted or not, such as the products marketed under the names GP 4 Silicone Fluid and GP 7100 by the company GENESEE or the products marketed under the names Q2 8220 and DOW CORNING 929 or 939 by the company DOW CORNING. The substituted amino groups are in particular C ₁ -C ₄ aminoalkyl groups;

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

The fatty substance(s) are advantageously chosen from alkanes with more than 16 carbon atoms, C6-C16 alkanes, oils or triglycerides of plant origin, liquid synthetic triglycerides, fatty alcohols, fatty acid esters and/or fatty alcohols other than triglycerides and non-silicone waxes, or mixtures thereof.

Preferably, the composition according to the invention comprises one or more fatty substances chosen from saturated alkanes comprising a carbon number of between 8 and 16, more preferably from isododecane, isohexadecane and/or mixtures thereof.

Preferably, the shaping composition comprises isododecane and/or isohexadecane, more preferably the composition according to the invention comprises isododecane

According to a particular embodiment, the isododecane sold under the reference ISODODECANE by INEOS is used.

The composition according to the invention may comprise one or more fatty substances present in a total amount ranging from 0.1% to 65% by weight, preferably from 0.5% to 60% by weight, better still from 5% to 50% by weight relative to the total weight of the composition. More particularly, the composition comprises one or more liquid fatty substances, chosen in particular from C8-C16 alkanes.

In a particular variant of the invention, the composition comprises one or more liquid fatty substances in a total amount ranging from 20 to 60% by weight, preferably from 25 to 50% by weight, better still from 30 to 50% by weight per relative to the total weight of the composition.

Hydrocarbon block copolymers

According to a preferred embodiment, the composition used according to the invention further comprises at least one hydrocarbon-based block copolymer also called hydrocarbon-based block copolymer, preferably a block copolymer soluble or dispersible in a liquid fatty phase.

The hydrocarbon-based block copolymer may in particular be a diblock, triblock, multiblock, radial, star copolymer, or mixtures thereof.

Preferably, the hydrocarbon block copolymer is a diblock or triblock copolymer.

By hydrocarbon-based polymer is meant within the meaning of the invention a polymer consisting solely of carbon and hydrogen atoms.

Such hydrocarbon block copolymers are described in application US-A-2002/005562 and in patent US-A-5,221,534.

The copolymer may have at least one block whose glass transition temperature is preferably less than 20°C, preferably less than or equal to 0°C, preferably less than or equal to -20°C, more preferably less than or equal to equal to -40°C. The glass transition temperature of said block may be between -150°C and 20°C, in particular between 100°C and 0°C.

The hydrocarbon block copolymer present in the composition according to the invention is a copolymer formed by polymerization of an olefin. The olefin may in particular be an ethylenically unsaturated monomer.

As an example of an olefin, mention may be made of ethylenic carbide monomers, in particular having one or two ethylenic unsaturations, having from 2 to 5 carbon atoms such as ethylene, propylene, butadiene, isoprene, or pentadiene .

Advantageously, the hydrocarbon block copolymer is a block copolymer of styrene and olefin.

Particular preference is given to block copolymers comprising at least one styrene block and at least one block comprising units chosen from butadiene, ethylene, propylene, butylene, isoprene or one of their mixtures.

According to a preferred embodiment, the hydrocarbon block copolymer is hydrogenated to reduce the residual ethylenic unsaturations after the polymerization of the monomers.

In particular, the hydrocarbon block copolymer is a copolymer, optionally hydrogenated, with styrene blocks and with ethylene/C3-C4 alkylene blocks.

As diblock copolymer, preferably hydrogenated, mention may be made of styrene-ethylene/propylene copolymers, styrene-ethylene/butadiene copolymers, styrene-ethylene/butylene copolymers. Diblock polymers are in particular sold under the name ^Kraton® G1701E by the company Kraton Polymers. As triblock copolymer, preferably hydrogenated, mention may be made of styrene-ethylene/propylene-styrene copolymers, styrene-ethylene/butadiene-styrene copolymers, styrene-ethylene/butylene-styrene copolymers, styrene-isoprene- styrene, styrene-butadiene-styrene copolymers. Triblock polymers are notably sold under the names ^Kraton® G1650, Kraton® ^G1652 , Kraton® ^D1101 , ^Kraton® D1102, ^Kraton® D1160 by the company Kraton Polymers.

According to one embodiment of the present invention, the hydrocarbon block copolymer is a styrene-ethylene/propylene diblock copolymer, in particular such as the diblock polymers sold under the name ^Kraton® G1701E by the company Kraton Polymers.

The hydrocarbon block copolymer(s) may be present in a total amount ranging from 0.01 to 10% by weight, preferably from 0.1 to 8% by weight, and more preferably from 0.5 to 7% by weight, better still from 1 to 5% by weight relative to the total weight of the composition.

Solvents

The useful composition according to the invention can comprise one or more organic solvents different from the fatty substances previously described.

According to the invention, the solvent(s) is (are) liquid(s) at ambient temperature (25° C.) and atmospheric pressure (760 mm Hg).

According to one embodiment, the composition according to the invention comprises one or more monoalcohol(s) and/or one or more diol(s).

According to this embodiment, the organic solvent(s) are chosen from monoalcohols or diols.

By way of example, mention may be made of monoalcohols or diols, linear or branched, preferably saturated, comprising from 2 to 10 carbon atoms, such as ethyl alcohol, isopropyl alcohol, hexylene glycol (2- methyl 2,4-pentanediol), neopentyl glycol and 3-methyl-1,5-pentanediol; aromatic alcohols such as benzyl alcohol, phenylethyl alcohol; glycols or glycol ethers such as, for example, monomethyl, monoethyl and monobutyl ethers of ethylene glycol, propylene glycol or its ethers such as, for example, propylene glycol monomethyl ether, butylene glycol, dipropylene glycol; as well as diethylene glycol alkyl ethers, in particular C ₁ -C ₄ alkyl ethers, such as, for example, diethylene glycol monoethyl ether or monobutyl ether, alone or as a mixture.

According to one embodiment, monoalcohols or diols, linear or branched, preferably saturated, comprising from 2 to 10 carbon atoms are preferred, more preferably monoalcohols comprising from 2 to 10 carbon atoms, better still from 2 to 4 carbon atoms. carbon and more particularly ethanol is preferred.

When they are present, the organic solvent( s ) is (are) generally present in a total content ranging from 1 to 90% by weight, preferably from 10 to 80% by weight. weight, more preferably from 20 to 70% by weight, better still from 30 to 60% by weight, and better still, from 35 to 55% relative to the total weight of the composition .

The composition of the invention can be anhydrous or aqueous. Preferably the composition is anhydrous.

By anhydrous composition is meant within the meaning of the present invention that the water content is less than 2% by weight, preferably less than 1% by weight, the better the composition is free of water.

Additives

The useful composition according to the invention may comprise one or more additive(s) usually used in cosmetics. These additives are generally chosen, for example, from anionic, cationic, nonionic, amphoteric or zwitterionic surfactants or mixtures thereof, anionic, cationic, nonionic, amphoteric or zwitterionic polymers, different from those described above, pH agents, reducing agents, softeners, antifoaming agents, moisturizing agents, UV filters, peptizers, solubilizers, inorganic or organic thickeners, and in particular anionic, cationic, nonionic and amphoteric polymeric associative thickeners, antioxidants, penetrating agents, sequestering agents, dispersing agents, conditioning agents such as, for example, film-forming agents, ceramides, preservatives, opacifying agents or conductive polymers, perfumes, proteins, vitamins, alone or in combination.

Preferably, the composition useful in the method according to the invention is non-coloring.

By non-coloring composition is meant within the meaning of the present invention a composition which does not comprise pigments and no dyes intended to color keratin fibres, in particular the hair.

The term "pigment" is intended to denote a solid, white or colored particle, naturally insoluble in the liquid hydrophilic and lipophilic phases usually used in cosmetics or made insoluble by formulation in the form of a lacquer, where appropriate. More particularly, the pigment is little or not soluble in hydro-alcoholic media.

By composition not comprising dyes, is meant more specifically a composition which does not comprise a direct dye, an oxidation dye precursor (oxidation base and coupler) or any other compound which, by reaction, gives a colored species in the composition or on the fibres, usually used for coloring human keratin fibres.

The non-dying composition according to the invention is preferably free of pigment and dye, or else, if it comprises at least one pigment and/or at least one dye, their total content does not exceed 0.005% by weight relative to the weight of composition. In fact, at such a content, only the composition would be tinted, that is to say that no coloring effect on the keratin fibers would be observed.

It is recalled that the precursors of oxidation dyes, oxidation bases and couplers, are compounds with little or no color which, by a condensation reaction in the presence of an oxidizing agent, give a colored species. As for direct dyes, these compounds are colored and have a certain affinity for keratin fibers.

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

Preferably, when the composition comprises one or more additives, the total amount of additives varies from 0.01% to 50% by weight, more preferably from 0.1% to 45% by weight and better still from 1 to 10% by weight. weight relative to the total weight of the composition.

Aerosol device

The aerosol device according to the present invention comprising the composition consists of a container containing the said composition, and of a means for spraying the said composition, the propellant(s) (b) optionally being able to be located in a separate compartment from that comprising the other ingredients of the composition.

Preferably, the aerosol device according to the invention makes it possible to spray said composition in the form of a spray.

The composition useful according to the invention is advantageously packaged under pressure, in an aerosol device, for example one-piece, which comprises a spray means and a container.

The spray means generally consists of a dispensing valve controlled by a dispensing head, itself comprising a nozzle through which the composition of the invention is delivered in the form of a spray. The diffusion can be planar or conical.

The means for dispensing said aerosol composition may comprise a diffuser provided with a terminal orifice in the form of a slit ensuring a plane spray .

The container containing the pressurized composition can be opaque or transparent. It can be made of glass, polymeric material or metal, and possibly covered with a layer of protective varnish.

As already mentioned previously, the container contains both the propellant(s) and the other ingredients of the composition, in a single compartment, or as a variant in two compartments. According to this latter variant, the container may consist of an external aerosol reservoir comprising an internal pocket hermetically welded to a valve. The various ingredients of the composition are introduced into the internal pocket and a propellant is introduced between the pocket and the container at a pressure sufficient to cause the composition to come out in the form of a spray.

Process

The invention also relates to a method using the composition described above. The method according to the invention comprises a step of applying this composition to the keratin fibers.

The composition can be applied to damp or dry hair, preferably damp.

According to a particular embodiment of the method of the invention, the fibers are washed before application of the composition described above.

According to one particular embodiment, the composition can in particular be applied to the roots.

The liquor ratio of the composition applied to the hair (weight ratio between the quantity of composition applied and the quantity of hair) can be between 0.05 and 10, and more particularly between 0.05 and 5.

The hair is optionally rinsed and/or wrung out in order to remove an excess of composition.

A subject of the invention is also a process for shaping keratin fibers, in particular the hair, comprising a step of applying to the keratin fibers a composition sprayed on the fibers using an aerosol device comprising at at least one silicone acrylic copolymer and at least from 30 to 75% by weight of at least one propellant, and a step of shaping said fibers.

The invention also relates to a process for treating keratin fibres, in particular the hair, comprising the following steps:

1. i. application to the keratin fibers of a composition sprayed on the fibers using an aerosol device comprising at least one silicone acrylic copolymer and at least from 30 to 75% by weight of at least one propellant, and
2. ii. application of heat to the keratin fibers using a heating tool, it being possible for the application of the heat to take place during or after the application of the composition, preferably after.

This process includes a heat application step (or heating step).

Heating step

The heat application step can take place during or after the composition application step. Preferably, the step of applying heat occurs after the application of the composition. A possible exposure time may occur between the application of the composition and the application of heat.

According to one embodiment, a rinsing step can take place after the step of applying the composition. According to a preferred embodiment, the step of applying the composition is not followed by a rinsing step.

The heat application step can be performed using any heating device.

One or more heating tools can be applied in a single or successive manner to the hair.

The application of heat can be carried out for a period of between 2 seconds and one hour, and preferably between 2 seconds and one minute.

The application of the heating medium can be done by successive touches or by sliding the device along the fibers.

The heating tool can be a straightening iron, a curling iron, a pinking iron, a waver, a helmet, a hair dryer, an infrared heating system, a heated curler.

Preferably, the heating tool is a straightening iron or a hair dryer. Preferably, the method according to the invention implements a step of applying heat by means of a straightening iron.

During the step of applying heat to the keratinous fibers, a mechanical action can be exerted on the locks, such as combing, brushing, passing the fingers.

The application of heat can be carried out at a temperature between 30 and 230°C, preferably between 80°C and 230°C and more preferably between 100°C and 230°C.

When the step of applying heat to the keratin fibers is carried out with a helmet or a hair dryer, the temperature is between 30 and 110°C, preferably between 50 and 90°C.

When the step of applying heat to the keratin fibers is carried out with a straightening iron, the temperature is between 110 and 230°C, preferably between 140 and 230°C.

In a particular variant, the method of the invention implements a step (b1) of applying heat using a helmet or a hair dryer, preferably a hair dryer and a step (b2) of applying heat using a straightening or curling iron, preferably a straightening iron.

Preferably, step (b1) is carried out before step (b2).

During step (b1), also called the drying step, the fibers can be dried, for example at a temperature greater than or equal to 30°C. According to a particular embodiment, this temperature is greater than 40°C. According to a particular embodiment, this temperature is greater than 45°C and less than 110°C.

Preferably, if the fibers are dried, they are dried, in addition to a supply of heat, with a flow of air. This flow of air during drying improves the individualization of the sheathing.

During drying, a mechanical action on the locks can be exerted such as combing, brushing, the passage of the fingers.

During step (b2), the passage of the straightening or curling iron, preferably the straightening iron, can be carried out at a temperature ranging from 110 and 230°C, preferably between 140 and 230°C.

According to a preferred embodiment, the method implements a step of applying heat using a hair dryer (drying) and a step of applying heat using an iron to smooth. Preferably, the method implements a step of applying heat using a hair dryer (drying), followed by a step of applying heat using a hot iron. smooth.

Preferably, the process for treating the keratin fibres, whether or not it comprises a step of applying heat, is a process for shaping the keratin fibres, in particular to provide volume to the hair.

Use

A subject of the invention is also the use of a composition sprayed from an aerosol device according to the present invention for shaping keratin fibres, in particular human keratin fibers such as the hair.

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

Examples

Compositions A and B according to the invention were prepared from the ingredients, the contents of which are indicated in the table below in percentage by weight of active ingredient relative to the total weight of the composition.

AT B Isobutylmethacrylate/bis-hydroxypropyl dimethicone acrylate copolymer (with 40% active ingredient in isododecane) ⁽¹⁾ 2.22% MA of copolymer 1.75% MA of copolymer HYDROGENATED STYRENE/ETHYLENE-PROPYLENE COPOLYMER (2) 3.25% 2.50% Butane 60% 50% Isododecane Qs 100% Qs 100%

1. Granacrysil BMAS, marketed by the company GRANT INDUSTRIES.
2. Kraton G1701 MU SQR 1111 sold by KRATON POLYMERS.

Each of compositions A and B is packaged in a separate aerosol device consisting of an aluminum can with a maximum filling capacity of 100 mL, and a means for spraying the composition.

The device for spraying the composition consists in particular of:
A valve: Gi 0.33 / Ri 0.33 / without PGA (ref: Precision P14427 and P13396)
A diffuser: DLSI639 from Lindal or 0.33mm APSL and 0.41mm APSL
Flow about 0.41g/s

Application Protocol

-Shampoo

-Application of the composition according to the invention at the roots on wet fine straight hair (about the first 5 cm)

- -drying with a hair dryer or Brushing

-Straightening iron (3 passages in roots at 210°C)

The aerosol device allows a precise application in the roots.

After treatment, the hair has volume at the roots. The hairstyle is natural.

After 3 shampoos, the volume is retained.

Claims (22)

Aerosol device containing a composition comprising:
(a) at least one silicone acrylic copolymer comprising at least the following units:
- at least one polydimethylsiloxane (PDMS) unit comprising at least two polymerizable radical groups chosen from an acrylic or methacrylic group having from 1 to 6 carbon atoms, and
- at least one alkyl acrylate or methacrylate unit;
(b) one or more propellant(s) in an amount ranging from 30 to 75% by weight relative to the total weight of the composition. Device according to Claim 1, characterized in that the silicone acrylic copolymer comprises at least the following units:
- at least one polydimethylsiloxane (PDMS) unit comprising at least two polymerizable radical groups chosen from an acrylic or methacrylic group having from 1 to 6 carbon atoms and,
- at least one alkyl acrylate or methacrylate unit, the alkyl radical comprising from 1 to 30 carbon atoms, preferentially from 1 to 22 carbon atoms, better still 1 to 10 carbon atoms, and more preferentially 2 to 6 carbon atoms . Device according to any one of the preceding claims, characterized in that the silicone acrylic copolymer comprises at least the following units:
- at least one polydimethylsiloxane (PDMS) unit comprising at least two polymerizable radical groups chosen from a CH ₂ = CH – CO – O – R1- group, where R1 represents an alkyl radical comprising from 1 to 3 carbon atoms; And
- at least one C ₁ -C ₃₀ alkyl acrylate or methacrylate unit, preferably C ₁ -C ₂₂ , preferably C ₁ -C ₁₀ , better still C ₂ -C ₆ . Device according to any one of the preceding claims, characterized in that the silicone acrylic copolymer comprises at least the following units:
- at least one polydimethylsiloxane (PDMS) unit comprising at least two polymerizable radical groups chosen from a CH ₂ = CH – CO – O – R1- group, where R1 represents an alkyl radical comprising from 1 to 3 carbon atoms; And
- at least one C ₁ -C ₂₂ alkyl acrylate or methacrylate unit, preferably C ₁ -C ₁₀ , better still C ₂ -C ₆ . Device according to any one of the preceding claims, characterized in that the silicone acrylic copolymer(s) is (are) present in a total quantity varying from 0.05 to 15% by weight, preferably from 0.1 to 10% by weight, better still 0.5 to 5% by weight relative to the total weight of the composition. Aerosol device according to any one of the preceding claims, characterized in that the propellant(s) (b) is (are) chosen from among compressed gases alone or as a mixture, liquefied gases, alone or as a mixture, preferably from liquefied gases. Aerosol device according to any one of the preceding claims, characterized in that the propellant(s) (b) is (are) chosen from dimethyl ether, chlorinated and/or fluorinated hydrocarbons, volatile, alone or as a mixture, more preferably from C ₃ -C ₅ alkanes, more preferably propane, isopropane, n -butane, isobutane, alone or as a mixture. Aerosol device according to any one of the preceding claims, characterized in that the propellant(s) (c) is (are) present in a total quantity ranging from 35 to 75% by weight, more preferably from 40 to 70% by weight, better still from 45 to 65% by weight, by weight relative to the total weight of the composition. Aerosol device according to any one of the preceding claims, characterized in that the said composition further comprises one or more hydrocarbon block copolymers. Aerosol device according to the preceding claim, characterized in that the hydrocarbon block copolymer is a block copolymer of styrene and olefin. Aerosol device according to any one of Claims 9 or 10, characterized in that the hydrocarbon block copolymer comprises at least one styrene block and at least one block comprising units chosen from among butadiene, ethylene, propylene, butylene, isoprene or a mixture thereof. Aerosol device according to any one of the preceding claims, characterized in that the said composition comprises one or more hydrocarbon-based block copolymer(s) in a total content ranging from 0.01 to 10% by weight, preferably from 0, 1 to 8% by weight, and more preferably from 0.5 to 7% by weight, better still from 1 to 5% by weight relative to the total weight of the composition. Aerosol device according to any one of the preceding claims, characterized in that the said composition comprises one or more fatty substances, preferably liquids. Aerosol device according to any one of the preceding claims, characterized in that it comprises one or more fatty substances chosen from saturated alkanes comprising from 8 to 16 carbon atoms, more preferentially from isododecane, isohexadecane and /or mixtures thereof. Aerosol device according to any one of Claims 13 or 14, characterized in that it comprises one or more fatty substances in a total content ranging from 0.1% to 65% by weight, preferably from 0.5% to 60 % by weight, better still from 5% to 50% by weight relative to the total weight of the composition. Aerosol device according to any one of Claims 13 or 14, characterized in that it comprises one or more liquid fatty substances in a total content ranging from 20 to 60% by weight, preferably from 25 to 50% by weight, better from 30 to 50% by weight relative to the total weight of the composition. Process for shaping keratin fibers, in particular human keratin fibers such as the hair, comprising a step of applying to the keratin fibers a composition delivered from an aerosol device as defined in one any of the preceding claims and a step of shaping said fibers. Process for treating keratin fibres, in particular the hair, comprising the following steps:
i. application to the keratin fibers of a composition delivered from an aerosol device as defined in any one of Claims 1 to 16, and
ii. application of heat to the keratin fibers using a heating tool, it being possible for the application of the heat to take place during or after the application of the composition, preferably after. Process according to the preceding claim, characterized in that the step of applying heat to the keratin fibers using a heating tool is carried out at a temperature of between 30°C and 230°C, preferably between 80 °C and 230°C and more preferably between 100°C and 230°C. Method according to either of Claims 18 and 19, characterized in that the heating tool is chosen from a straightening iron, a curling iron, a pinking iron, a waver, a helmet, a hair dryer, an infra-red heating system, a heated curler. Method according to any one of Claims 18 to 20, characterized in that the heating tool is a straightening iron. Use of a composition delivered from an aerosol device as defined in any one of Claims 1 to 16, for conditioning and/or shaping keratin fibers