Classifications

• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
  • A61K8/00—Cosmetics or similar toiletry preparations
  • A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
  • A61K8/30—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds
  • A61K8/58—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds containing atoms other than carbon, hydrogen, halogen, oxygen, nitrogen, sulfur or phosphorus
  • A61K8/585—Organosilicon compounds
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
  • A61K8/00—Cosmetics or similar toiletry preparations
  • A61K8/02—Cosmetics or similar toiletry preparations characterised by special physical form
  • A61K8/04—Dispersions; Emulsions
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
  • A61K8/00—Cosmetics or similar toiletry preparations
  • A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
  • A61K8/72—Cosmetics or similar toiletry preparations characterised by the composition containing organic macromolecular compounds
  • A61K8/84—Cosmetics or similar toiletry preparations characterised by the composition containing organic macromolecular compounds obtained by reactions otherwise than those involving only carbon-carbon unsaturated bonds
  • A61K8/89—Polysiloxanes
  • A61K8/891—Polysiloxanes saturated, e.g. dimethicone, phenyl trimethicone, C24-C28 methicone or stearyl dimethicone
  • A61K8/893—Polysiloxanes saturated, e.g. dimethicone, phenyl trimethicone, C24-C28 methicone or stearyl dimethicone modified by an alkoxy or aryloxy group, e.g. behenoxy dimethicone or stearoxy dimethicone
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
  • A61K8/00—Cosmetics or similar toiletry preparations
  • A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
  • A61K8/72—Cosmetics or similar toiletry preparations characterised by the composition containing organic macromolecular compounds
  • A61K8/91—Graft copolymers
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61Q—SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
  • A61Q1/00—Make-up preparations; Body powders; Preparations for removing make-up
  • A61Q1/02—Preparations containing skin colorants, e.g. pigments
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61Q—SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
  • A61Q1/00—Make-up preparations; Body powders; Preparations for removing make-up
  • A61Q1/02—Preparations containing skin colorants, e.g. pigments
  • A61Q1/04—Preparations containing skin colorants, e.g. pigments for lips
  • A61Q1/06—Lipsticks
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61Q—SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
  • A61Q1/00—Make-up preparations; Body powders; Preparations for removing make-up
  • A61Q1/02—Preparations containing skin colorants, e.g. pigments
  • A61Q1/08—Preparations containing skin colorants, e.g. pigments for cheeks, e.g. rouge
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61Q—SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
  • A61Q1/00—Make-up preparations; Body powders; Preparations for removing make-up
  • A61Q1/02—Preparations containing skin colorants, e.g. pigments
  • A61Q1/10—Preparations containing skin colorants, e.g. pigments for eyes, e.g. eyeliner, mascara
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61Q—SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
  • A61Q17/00—Barrier preparations; Preparations brought into direct contact with the skin for affording protection against external influences, e.g. sunlight, X-rays or other harmful rays, corrosive materials, bacteria or insect stings
  • A61Q17/04—Topical preparations for affording protection against sunlight or other radiation; Topical sun tanning preparations
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61Q—SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
  • A61Q19/00—Preparations for care of the skin
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61Q—SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
  • A61Q19/00—Preparations for care of the skin
  • A61Q19/04—Preparations for care of the skin for chemically tanning the skin
• • C—CHEMISTRY; METALLURGY
  • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
  • C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
  • C08F265/00—Macromolecular compounds obtained by polymerising monomers on to polymers of unsaturated monocarboxylic acids or derivatives thereof as defined in group C08F20/00
• • C—CHEMISTRY; METALLURGY
  • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
  • C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
  • C08F265/00—Macromolecular compounds obtained by polymerising monomers on to polymers of unsaturated monocarboxylic acids or derivatives thereof as defined in group C08F20/00
  • C08F265/04—Macromolecular compounds obtained by polymerising monomers on to polymers of unsaturated monocarboxylic acids or derivatives thereof as defined in group C08F20/00 on to polymers of esters
• • C—CHEMISTRY; METALLURGY
  • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
  • C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
  • C08F283/00—Macromolecular compounds obtained by polymerising monomers on to polymers provided for in subclass C08G
  • C08F283/06—Macromolecular compounds obtained by polymerising monomers on to polymers provided for in subclass C08G on to polyethers, polyoxymethylenes or polyacetals
• • C—CHEMISTRY; METALLURGY
  • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
  • C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
  • C08F290/00—Macromolecular compounds obtained by polymerising monomers on to polymers modified by introduction of aliphatic unsaturated end or side groups
  • C08F290/02—Macromolecular compounds obtained by polymerising monomers on to polymers modified by introduction of aliphatic unsaturated end or side groups on to polymers modified by introduction of unsaturated end groups
  • C08F290/04—Polymers provided for in subclasses C08C or C08F
• • C—CHEMISTRY; METALLURGY
  • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
  • C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
  • C08F290/00—Macromolecular compounds obtained by polymerising monomers on to polymers modified by introduction of aliphatic unsaturated end or side groups
  • C08F290/02—Macromolecular compounds obtained by polymerising monomers on to polymers modified by introduction of aliphatic unsaturated end or side groups on to polymers modified by introduction of unsaturated end groups
  • C08F290/06—Polymers provided for in subclass C08G
• • C—CHEMISTRY; METALLURGY
  • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
  • C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
  • C08F290/00—Macromolecular compounds obtained by polymerising monomers on to polymers modified by introduction of aliphatic unsaturated end or side groups
  • C08F290/02—Macromolecular compounds obtained by polymerising monomers on to polymers modified by introduction of aliphatic unsaturated end or side groups on to polymers modified by introduction of unsaturated end groups
  • C08F290/06—Polymers provided for in subclass C08G
  • C08F290/068—Polysiloxanes
• • C—CHEMISTRY; METALLURGY
  • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
  • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
  • C08L51/00—Compositions of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers
  • C08L51/003—Compositions of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers grafted on to macromolecular compounds obtained by reactions only involving unsaturated carbon-to-carbon bonds
• • C—CHEMISTRY; METALLURGY
  • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
  • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
  • C08L51/00—Compositions of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers
  • C08L51/08—Compositions of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers grafted on to macromolecular compounds obtained otherwise than by reactions only involving unsaturated carbon-to-carbon bonds

Definitions

• Cosmetic composition comprising a polymer
• the subject of the present invention is a cosmetic composition comprising a particular polymer intended to be applied to the skin of human beings.
• composition according to the invention can be a makeup composition or a skin care composition, and preferably a makeup composition.
• the makeup composition can be a foundation, an eyeshadow, a blush, a concealer, an eyeliner, a body makeup product. More specifically, the invention relates to a foundation composition.
• the care composition may be a care product for the skin of the body and the face, in particular a sun care product, a product for coloring the skin (such as a self-tanner).
• Foundation compositions are commonly used to provide an aesthetic color to the skin, in particular to the face.
• These makeup products generally contain oils, pigments and / or fillers and possibly additives such as cosmetic or dermatological active ingredients.
• compositions when applied to the skin, have the drawback of transferring, that is to say of depositing at least in part, leaving traces, on certain supports with which they can be brought into contact. and in particular a glass, a cup, a cigarette, a garment or the skin. This results in poor hold of the applied film, requiring regular renewal of the application of the foundation or lipstick composition. Furthermore, the appearance of these unacceptable traces, in particular on the collars of the hem, may exclude certain women from the use of this type of make-up.
• sebum excreted by the skin over time also changes the properties of makeup.
• sebum does not promote the adhesion of makeup on the skin and the transfer of makeup is even more important, causing a significant loss of the makeup remaining on the skin.
• the present invention therefore aims to provide a new way of formulating a cosmetic product which makes it possible to obtain good transfer resistance properties, in particular in the presence of sebum.
• the inventors have discovered that it is possible to obtain such a composition using a particular polymer.
• the present invention therefore relates to a cosmetic composition for making up or caring for the skin comprising a dispersion of particles, preferably solid, of an ethylenic polymer grafted in a liquid fatty phase as described below. , the composition being in particular as defined below.
• the grafted ethylenic polymer is such that, when it is present in a sufficient amount in the composition, the latter is capable of forming a deposit-having-an indie transfer in the presence of sebum-less than-4. -
• the subject of the invention is also a method for making up the skin, comprising the application to keratin materials, in particular to the skin, of a composition as defined above.
• the invention also relates to the use of a composition as defined above for obtaining a deposit, in particular a make-up on the skin having good resistance to transfer, in particular in the presence of sebum.
• Another subject of the invention is the use, in a cosmetic composition, of a dispersion of (preferably solid) particles of an ethylenic polymer grafted in dispersion in a liquid fatty phase, the composition being in particular capable of forming a deposit having a transfer index in the presence of sebum of less than 4, to obtain a deposit, in particular make-up, on the skin having good resistance to transfer, in particular in the presence of sebum.
• the grafted ethylenic polymer used in the composition according to the invention is such that when it is present in a sufficient amount in the composition, the latter is capable of forming a deposit having a transfer index in the presence of sebum of less than 4, in particular less than or equal to 3.5, preferably less than or equal to 3, in particular less than or equal to 2.5, preferably less than or equal to 2, more preferably less than or equal to 1.5, and in particular less than or equal to 1.
• the transfer index in the presence of sebum of the deposit obtained with the composition according to the invention is determined according to the measurement protocol described below.
• a support is prepared (square 40 mm X 40 mm) consisting of a layer of adhesive neoprene foam on one of its faces (sold under the name RE70X40 212B from the company JOINT TECHNIQUE LYONNAIS IND).
• an adhesive crown is fixed having an internal diameter of -24 mm and the thickness of which is approximately -250 ⁇ m - ⁇ n -applies- inside the crown the composition which is leveled off with a glass slide to obtain a deposit of the composition of approximately 250 ⁇ m thick, then the crown is removed and left to dry for 20 hours in an oven at 37 ° C.
• the support is then bonded by its adhesive side to a tip with a diameter of 27 mm fixed on a press (MANUAL STATIF SV-1 from the company IMADA Co LTD) equipped with a dynanometer (DPS-5R from the company IMADA Co LTD).
• a drop of 10 ⁇ l of artificial sebum having the following composition is placed in the center of the first box:
• the support (comprising the composition sample) is pressed on the first box of the paper strip at a force of approximately 4 kg exerted for 5 seconds. Then the paper is moved in a rectilinear and regular fashion over the entire length of the strip so that the support is in contact with the entire length of the strip.
• the speed of movement of the strip is of the order of 10 cm / s.
• a score ranging from 0 to 5 is assigned in increments of 0.5 depending on the number of boxes, from the first to the fifth, crossed in whole or in part by the possible streak of product.
• a revealing step may be necessary in order to make the product trail visible.
• a compound is used which is capable of producing a colored reaction on contact with the transferred product.
• an active ingredient which emits at least part of the UV radiation (Wood lamp) is incorporated into the product to be tested.
• a score of 5 is awarded when, upon observation, after having made the relative displacement between the paper and the support, substantially no product remains on the support (less than 10%). In the latter case, the transfer can be qualified as total.
• a score of 5 is also awarded when the product trail extends beyond the fifth box, regardless of the amount of product remaining on the support.
• a score of 0 is assigned in the event that no product present on the support is transferred to the paper strip. No visible trace can be observed on the sheet. The transfer can be called null.
• the table below illustrates how the other scores are assigned based on the location in boxes 1 to 5 where the product streak ends. For these notes, there remains a greater or lesser quantity of product on the support. The transfer is partial.
• the cosmetic composition according to the invention comprises a dispersion of particles, preferably solid, of an ethylenic polymer grafted in a liquid fatty phase.
• the cosmetic composition according to the invention is a composition compatible with keratin materials, in particular the skin.
• ethylenic polymer is meant a polymer obtained by polymerization of monomers comprising ethylenic unsaturation.
• the dispersion of grafted ethylenic polymer is in particular free of stabilizing polymer distinct from said grafted polymer, such as those described in EP749747, and the particles of grafted ethylenic polymer are therefore not surface stabilized by such additional stabilizing polymers.
• the graft polymer is dispersed in ⁇ the liquid fatty phase in the absence of additional surface stabilizer particles of the graft polymer
• grafted polymer is meant a polymer having a skeleton comprising at least one side chain hanging or located at the end of the chain, and preferably pending.
• the grafted ethylenic polymer comprises an ethylenic skeleton insoluble in said liquid fatty phase, and side chains covalently linked to said skeleton and soluble in said dispersion medium.
• the grafted ethylenic polymer is in particular a non-crosslinked polymer.
• the polymer is obtained by polymerization of monomers comprising a single polymerizable group.
• the grafted ethylenic polymer is a film-forming polymer.
• film-forming polymer is meant a polymer capable of forming on its own or in the presence of an auxiliary film-forming agent, a continuous and adherent film on a support, in particular on keratin materials.
• the grafted ethylenic polymer is a grafted acrylic polymer.
• the grafted ethylenic polymer is in particular capable of being obtained by radical polymerization in an organic polymerization medium:
• At least one ethylenic monomer in particular at least one acrylic monomer and optionally at least one additional non-acrylic vinyl monomer, to form said insoluble skeleton;
• At least one macromonomer comprising a polymerizable end group to form the side chains, said macromonomer having a weight average molecular weight greater than or equal to 200 and the content of polymerized macromonomer representing from 0.05 to 20% by weight of the polymer .
• the liquid fatty phase may contain the organic polymerization medium.
• the liquid organic dispersion medium corresponding to the medium in which the grafted polymer is supplied, may be identical to the polymerization medium.
• the polymerization medium can be substituted in whole or in part by another liquid organic medium.
• This other liquid organic medium can be added, after polymerization, to the polymerization medium. The latter is then evaporated in whole or in part.
• the liquid fatty phase can contain organic liquid compounds other than those present in the dispersion medium. These other compounds are chosen so that the grafted polymer remains in the state of dispersion in the liquid fatty phase.
• the organic liquid dispersion medium is present in the liquid fatty phase of the composition according to the invention due to the introduction into the composition of the graft polymer dispersion obtained.
• the liquid fatty phase preferably comprises one or more liquid organic compounds (or oils) as defined below.
• the liquid fatty phase is a non-aqueous liquid organic phase which is immiscible with water at room temperature (25 ° C).
• liquid organic compound is understood to mean a non-aqueous compound which is in the liquid state at room temperature (25 ° C.) and which therefore flows from its own weight.
• silicon compound means a compound containing at least one silicon atom.
• liquid organic compounds or oils in particular volatile or non-volatile, which may be present in the liquid organic dispersion medium
• - liquid organic compounds in particular non-silicone or silicone, having a global solubility parameter according to Hansen solubility space less than or equal to 18 (MPa) 1 2 , preferably less than or equal to 17 (MPa) 1/2
• - monoalcohols having an overall solubility parameter according to the Hansen solubility space less than or equal at 20 (MPa) 1/2 ; and - their mixtures.
• liquid fatty substances in particular oils, which can be chosen from natural or synthetic, carbon, hydrocarbon, fluorinated, silicone oils, optionally branched, alone or as a mixture.
• Oil means any non-aqueous medium which is liquid at room temperature (25 ° C) and atmospheric pressure (760mm Hg), compatible with application to the skin, mucous membranes (lips) and / or integuments (nails, eyelashes, eyebrows, hair).
• oils formed by esters of fatty acids and polyols, in particular triglycerides, such as sunflower, sesame or rapeseed oil, or esters derived from acids or long-chain alcohols (that is to say having from 6 to 20 carbon atoms), in particular the esters of formula RCOOR 'in which R represents the remainder of a fatty acid higher comprising from 7 to 19 carbon atoms and R ′ represents a hydrocarbon chain comprising from 3 to 20 carbon atoms, such as palmitates, adipates and benzoates, in particular diisopropyl adipate.
• esters of fatty acids and polyols in particular triglycerides, such as sunflower, sesame or rapeseed oil, or esters derived from acids or long-chain alcohols (that is to say having from 6 to 20 carbon atoms), in particular the esters of formula RCOOR 'in which R represents the remainder of a fatty acid higher comprising from 7 to 19 carbon atoms and R
• Mention may also be made of linear, branched and / or cyclic alkanes which may be volatile and in particular paraffin oils, of petrolatum, or hydrogenated polyisobutylene, isododecane, or also 'ISOPARS', volatile isoparaffins. Mention may also be made of esters, ethers and ketones. Mention may also be made of silicone oils such as polydimethylsiloxanes and polymethylphenylsiloxanes, optionally substituted by aliphatic and / or aromatic groups, optionally fluorinated, or by functional groups such as hydroxyl, thiol and / or amino groups, and silicone oils volatile, especially cyclical.
• paraffin oils of petrolatum, or hydrogenated polyisobutylene, isododecane, or also 'ISOPARS', volatile isoparaffins. Mention may also be made of esters, ethers and ketones. Mention may also be made of silicone oils such as polydimethylsi
• silicone oils optionally branched, volatile and / or non-volatile.
• volatile oil any non-aqueous medium capable of evaporating from the skin or the lips, in less than an hour, having in particular a vapor pressure, at ambient temperature and atmospheric pressure ranging from 10 "3 to 300 mm of Hg (0.13 Pa to 40,000 Pa).
• volatile silicone oil which can be used in the invention, mention may be made of linear or cyclic silicones having from 2 to 7 silicon atoms, these silicones optionally comprising alkyl or alkoxy groups having from 1 to 10 carbon atoms.
• these silicones optionally comprising alkyl or alkoxy groups having from 1 to 10 carbon atoms.
• octamethylcyclotetrasiloxane decamethylcyclopentasiloxane
• dodecamethylcyclohexasiloxane heptamethylhexyltrisiloxane
• heptamethyloctyltrisiloxane octamethyltrisiloxane
• decamethyltetrasiloxane and their mixtures.
• non-volatile silicone oil of polydialkylsiloxanes which are not -v0.ati.s 7 - such as - polydimethylsiloxanes (-P-DMS) - non-volatile - polydimethylsiloxanes comprising alkyl, alkoxy or phenyl, during or at the end of the silicone chain, groups having from 2 to 24 carbon atoms; phenylated silicones such as phenyl trimethicones, phenyl dimethicones, phenyl trimethylsiloxy diphenylsiloxanes, diphenyls dimethicones, diphenyl methyldiphenyl trisiloxanes, polymethylphenylsiloxanes; polysiloxanes modified with fatty acids (especially C8-C20), fatty alcohols (especially C8-C20) or polyoxyalkylenes (especially polyoxyethylene and / or polyoxypropylene); amino
• liquid monoalcohols having a global solubility parameter according to the Hansen solubility space of less than or equal to 20 (MPa) 1/2 is meant aliphatic fatty liquid monoalcohols having from 6 to 30 carbon atoms, the hydrocarbon chain not comprising no substitution group.
• monoalcohols according to the invention there may be mentioned oleic alcohol, decanol and linoleic alcohol.
• composition according to the invention may comprise a volatile oil in a content ranging from 1% to 90% by weight, relative to the total weight of -the-composition, -and-da.pr-éfé ⁇ ence-ranging.de_5. .% _ to_70% by weight. ___. ....
• the composition may comprise a non-volatile oil in a content ranging from 0.1% to 80% by weight, relative to the total weight of the composition, and preferably ranging from 3% to 50% by weight.
• the liquid fatty phase can be a non-silicone liquid fatty phase.
• non-silicone liquid fatty phase means a fatty phase comprising one or more liquid organic compounds or non-silicone oils, such as those mentioned above, said non-silicone compounds being present mainly in the liquid fatty phase, it that is to say at least 50% by weight, in particular from 50 to 100% by weight, preferably from 60% to 100% by weight (for example from 60 to 99% by weight), or even from 65% to 100% by weight (for example from 65 to 95% by weight), relative to the total weight of the liquid fatty phase.
• the non-silicone-based liquid organic compounds can in particular be chosen from:
• Said non-silicone-based liquid fatty phase may therefore optionally comprise liquid organic compounds or silicone oils, such as those mentioned above, which may be present in an amount of less than 50% by weight, in particular ranging from 0.1 to 40 % by weight, or even ranging from 1 to 35% by weight, or even ranging from 5 to 30% by weight, relative to the total weight of the liquid fatty phase.
• the non-silicone liquid fatty phase does not contain liquid organic compounds or silicone oils.
• the macromonomers present in the grafted polymer are advantageously carbon macromonomers as described below.
• the macromonomers present in the grafted polymer are advantageously carbon macromonomers as described below.
• non-silicone grafted polymer is intended to mean a grafted polymer mainly containing a carbon macromonomer and optionally containing at most 7% by weight of the total weight of the polymer, preferably at most 5% by weight, or even is free, of silicone macromonomer.
• the liquid fatty phase can be a silicone liquid fatty phase.
• silicone liquid fatty phase means a fatty phase comprising one or more silicone liquid organic compounds or silicone oils such as those described above, said silicone compounds being present mainly in the liquid fatty phase, that is to say at least at least 50% by weight, in particular from 50 to 100% by weight, preferably from 60% to 100% by weight (for example from 60 to 99% by weight), or also from 65% to 100% by weight (for example from 65 to 95% by weight), relative to the total weight of the liquid fatty phase.
• liquid organic silicone compounds can be chosen in particular from:
• liquid organic compounds in particular non-silicone or silicone compounds, having an overall solubility parameter according to the Hansen solubility space less than or equal to 18 (MPa) 1/2 .
• Said liquid silicone fatty phase can therefore optionally comprise liquid organic compounds or non-silicone oils, as described
• the silicone liquid fatty phase does not contain non-silicone liquid organic compounds.
• the macromonomers present in the grafted polymer are advantageously macromonomers
• the macromonomers present in the grafted polymer are advantageously silicone macromonomers as described below.
• the grafted polymer present in the composition is advantageously a silicone grafted polymer.
• grafted silicone polymer is intended to mean a grafted polymer mainly containing a silicone macromonomer and optionally containing at most 7% by weight of the total weight of the polymer, preferably at most 5% by weight, or even is free, of carbonaceous macromonomer, silicone such as described below.
• the choice of monomers constituting the backbone of the polymer, of the macromonomers, the molecular weight of the polymer, the proportion of the monomers and of the macromonomers can be made as a function of the liquid organic dispersion medium so as to advantageously obtain a dispersion of polymer particles grafted in particularly a stable dispersion, this choice can be made by a person skilled in the art.
• stable dispersion is meant a dispersion which is not liable to form a solid deposit or a liquid / solid phase shift, in particular after - - centrifugation, for example; - at 4000 rpm for -15 minutes
• the grafted ethylenic polymer forming the particles in dispersion therefore comprises a skeleton insoluble in said dispersion medium and a part soluble in said dispersion medium.
• the grafted ethylenic polymer can be a random polymer.
• grafted ethylenic polymer means a polymer capable of being obtained by radical polymerization:
• grafted acrylic polymer means a polymer capable of being obtained by radical polymerization:
• the acrylic monomers represent from 50 to 100% by weight, preferably from 55 to 100% by weight (in particular from 55 to 95% by weight), preferably from 60 to 100% by weight (in particular from 60 to 90% by weight) of the mixture of acrylic monomers + optional non-acrylic vinyl monomers.
• the acrylic monomers are chosen from monomers whose homopolymer is insoluble in the dispersion medium under consideration, that is to say that the homopolymer is in solid form (or not dissolved) at a greater or equal concentration. at 5% by weight at room temperature (20 ° C) in said dispersion medium.
• - we mean - "macr-omonomer having a polymerizable gr ⁇ upe-terminal" any polymer comprising on one of its ends a polymerizable terminal group capable of reacting during the polymerization reaction with acrylic monomers and optionally the additional non-acrylic vinyl monomers constituting the backbone.
• the macromonomer makes it possible to form the side chains of the grafted acrylic polymer.
• the group The polymerizable macromonomer can advantageously be an ethylenically unsaturated group capable of polymerizing by the radical route with the monomers constituting the skeleton.
• carbon macromonomer is meant a non-silicone macromonomer, and in particular an oligomeric macromonomer obtained by polymerization of non-silicone monomer (s) with ethylenic unsaturation, and mainly by polymerization of acrylic and / or non-acrylic vinyl monomers.
• silicone macromonomer is meant an organopolysiloxane macromonomer, and in particular a polydimethylsiloxane macromonomer.
• the macromonomer is chosen from macromonomers whose homopolymer is soluble in the dispersion medium under consideration, that is to say completely dissolved at a concentration greater than or equal to 5% by weight and at room temperature in said medium of dispersion.
• the grafted acrylic polymer comprises a skeleton (or main chain) consisting of a chain of acrylic units resulting from the polymerization in particular of one or more acrylic monomers and side chains (or grafts) resulting from the reaction of the macromonomers, said chains side being covalently linked to said main chain.
• the skeleton (or main chain) is insoluble in the dispersion medium considered while the side chains (or grafts) are soluble in said dispersion medium.
• acrylic monomers is meant in the present application monomers chosen from (meth) acrylic acid, esters of (meth) acrylic acid (also called - (meth) acrylates), amides of l (methacrylic acid) (also called (meth) acrylamides).
• acrylic monomer capable of being used to form the insoluble backbone of the polymer there may be mentioned, alone or as a mixture, the monomers following, as well as their salts:
• - Ri denotes a hydrogen atom or a methyl group
• R 2 represents a group chosen from:
• - a linear or branched alkyl group, comprising from 1 to 6 carbon atoms, said group possibly comprising in its chain one or more heteroatoms chosen from O, N and S; and / or possibly comprising one or more substituents chosen from -OH, the halogen atoms (F, Cl, Br, I) and - NR'R "with R 'and R" identical or different chosen from linear or branched alkyls in C1-C4; and / or may be substituted by at least one polyoxyalkylene group, in particular with C2-C4 alkylene, in particular polyoxyethylene and / or polyoxypropylene, said polyoxyalkylene group consisting of the repetition of 5 to 30 oxyalkylene units;
• a cyclic alkyl group comprising from 3 to 6 carbon atoms, said group possibly comprising in its chain one or more heteroatoms chosen from O, N and S, and / or possibly comprising one or more substituents chosen from OH and the atoms of halogen (F, Cl, Br, I);
• R 2 mention may be made of the methyl, ethyl, propyl, butyl, isobutyl, methoxyethyl, ethoxyethyl, methoxy-polyoxyethylene 350 EO, trifluoroethyl, 2-hydroxyethyl, 2-hydroxypropyl, dimethylaminoethyl, diethylaminoethyl, dimethylaminopropyl group.
• R 3 denotes a hydrogen atom or a methyl group
• - R and R 5 identical or different, represent a hydrogen atom or an alkyl group, linear or branched, comprising from 1 to 6 carbon atoms, which may comprise one or more substituents chosen from -OH, the halogen atoms (F, Cl, Br, I) and -NR'R "with R 'and R" identical or different chosen from linear or branched C ⁇ -C4 alkyls, or
• R 5 represents a group 1, 1-dimethyl-3-oxobutyl.
• alkyl groups which may constitute R 4 and R 5 , there may be mentioned n-butyl, t-butyl, n-propyl, dimethylaminoethyl, diethylaminoethyl, dimethylaminopropyl.
• (meth) acrylic monomers comprising at least one carboxylic, phosphoric or sulfonic acid function, such as acrylic acid, methacrylic acid, acrylamidopropanesulfonic acid.
• acrylic monomers mention may very particularly be made of methyl, ethyl, propyl, butyl and isobutyl (meth) acrylates; methoxyethyl or ethoxyethyl (meth) acrylates; trifluoroethyl methacrylate; dimethylaminoethyl methacrylate, diethylaminoethyl methacrylate, 2-hydroxypropyl methacrylate, 2-hydroxyethyl methacrylate, 2-hydroxypropyl acrylate, 2-hydroxyethyl acrylate; dimethylaminopropylmethacrylamide, (meth) acrylic acid; and their salts; and their mixtures.
• the acrylic monomers are chosen from methyl acrylate, methoxyethyl acrylate, methyl methacrylate, 2-hydroxyethyl methacrylate, (meth) acrylic acid, dimethylaminoethyl methacrylate, and their mixtures.
• R 6 -COO-CH CH 2 in which RQ represents a linear or branched alkyl group, comprising from 1 to 6 atoms, or an alkyl group cyclic with 3 to 6 carbon atoms and / or an aromatic group, for example of the benzene, anthracene and naphthalene type;
• non-acrylic vinyl monomers comprising at least one carboxyic, phosphoric or sulfonic acid function, such as crotonic acid, maleic anhydride, itaconic acid, fumaric acid, maleic acid, styrenesulfonic acid, vinylbenzoic acid, vinylphosphoric acid, and their salts;
• non-acrylic vinyl monomers comprising at least one tertiary amine function, such as 2-vinylpyridine, 4-vinylpyridine; - and their mixes.
• the grafted polymer comprises (meth) acrylic acid.
• the acrylic monomers present in the grafted polymer comprise at least (meth) acrylic acid, and in particular at least (meth) acrylic acid and at least one monomer chosen from (meth) acrylates and (meth) acrylamides described above in points (i) and (ii).
• the acrylic monomers comprise at least (meth) acrylic acid and at least one monomer chosen from C-1-C3 alkyl (meth) acrylates.
• the (meth) acrylic acid may be present in a content of at least 5% by weight, relative to the total weight of the polymer (in particular ranging from 5% to 80% by weight), preferably at least 10% by weight (in particular ranging from 10% by weight to 70% by weight), preferably at least 15% by weight (in particular ranging from 15% to 60% by weight).
• salts mention may be made of those obtained by neutralization of acid groups using inorganic bases such as sodium hydroxide, potassium hydroxide, ammonium hydroxide or organic bases of the aleanol type.
• amines such as monoethanolamine, diethanolamine, triethanolamine, 2-methyl-2-amino-1-propanol.
• acids minerals there may be mentioned sulfuric acid or hydrochloric acid, hydrobromic acid, hydroiodic acid, phosphoric acid, boric acid.
• organic acids mention may be made of acids comprising one or more carboxylic, sulphonic or phosphonic groups. They can be linear, branched or cyclic aliphatic acids or even aromatic acids. These acids may also contain one or more heteroatoms chosen from O and N, for example in the form of hydroxyl groups. Mention may in particular be made of acetic acid or propionic acid, terephthalic acid, as well as citric acid and tartaric acid.
• the grafted ethylenic polymer does not contain additional non-acrylic vinyl monomers as described above.
• the insoluble skeleton of the grafted ethylenic polymer is formed only from acrylic monomers as described above.
• non-polymerized acrylic monomers may be soluble in the dispersion medium under consideration, but the polymer formed with these monomers is insoluble in the dispersion medium.
• the grafted ethylenic polymer is capable of being obtained by radical polymerization in an organic polymerization medium: - of a main acrylic monomer chosen from C1 (meth) acrylates -C3, alone or as a mixture, and optionally of one or more additional acrylic monomers chosen from acrylic acid, methacrylic acid and the alkyl (meth) acrylates of formula (I) defined below, and their salts, to form said insoluble skeleton; and
• methyl acrylate, methyl methacrylate, ethyl acrylate, ethyl methacrylate, methyl acrylate can be used.
• the additional acrylic monomers can be chosen from:
• R'i denotes a hydrogen atom or a methyl group
• a linear or branched alkyl group comprising from 1 to 6 carbon atoms, said group comprising in its chain one or more oxygen atoms and / or comprising one or more substituents chosen from
• a cyclic alkyl group comprising from 3 to 6 carbon atoms, said group possibly comprising in its chain one or more oxygen atoms and / or possibly comprising one or more substituents chosen from OH and the halogen atoms (F, Cl , Br, I);
• R 2 there may be mentioned the methoxyethyl, _ethoxyethyl, _ trifluoroethyl group; 2-hydroxyethyl, 2-hydroxypropyl, dimethylaminoethyl, diethylaminoethyl, dimethylaminopropyl.
• acrylic acid methoxyethyl or ethoxyethyl (meth) acrylates; the trifluoroethyl methacrylate; dimethylaminoethyl methacrylate, diethylaminoethyl methacrylate, 2-hydroxypropyl methacrylate, 2-hydroxyethyl methacrylate, 2-hydroxypropyl acrylate, 2-hydroxyethyl acrylate, their salts, and mixtures thereof.
• acrylic acid methylacrylic acid.
• the macromonomers comprise at one end of the chain a polymerizable end group capable of reacting during the polymerization with the acrylic monomers and optionally the additional vinyl monomers, to form the side chains of the grafted ethylenic polymer.
• Said polymerizable end group may in particular be a vinyl or (meth) acrylate (or (meth) acryl) group, and preferably a (meth) acrylate group.
• the macromonomers are preferably chosen from macromonomers whose homopolymer has a glass transition temperature (Tg) less than or equal to 25 ° C, in particular ranging from - 100 ° C to 25 ° C, preferably ranging from - 80 ° C to 0 ° C.
• Tg glass transition temperature
• the macromonomers have a weight average molecular weight greater than or equal to 200, preferably greater than or equal to 300, preferably greater than or equal to 500, and more preferably greater than 600.
• the macromonomers have a weight average molecular mass ( Mw) ranging from 200 to 100,000, preferably ranging from 500 to 50,000, preferably ranging from 800 to 20,000, more preferably ranging from 800 to 10,000, and even more preferably ranging from 800 to 6,000.
• the average molar masses by weight (Mw) and by number (Mn) are determined by liquid chromatography by gel permeation (solvent - THF, - - curve - of established calibration - with polystyrene standards - linear , refractometric detector).
• carbon macromonomers mention may in particular be made of: (i) linear or branched C8-C22 homopolymers and copolymers (meth) acrylate of alkyl, having a polymerizable end group chosen from vinyl or (meth) acrylate groups among which mention may be made in particular of: macromonomers of poly (2-ethylhexyl acrylate) with mono (meth) acrylate end; poly (dodecyl acrylate) or poly (dodecyl methacrylate) macromonomers with mono (meth) acrylate end; poly (stearyl acrylate) or poly (stearyl methacrylate) macromonomers with mono (meth) acrylate end.
• polyolefins having an ethylenically unsaturated end group, in particular having a (meth) acrylate end group.
• polyolefins mention may be made in particular of the following macromonomers, it being understood that they have a terminal (meth) acrylate group: polyethylene macromonomers, polypropylene macromonomers, polyethylene / polypropylene copolymer macromonomers, macromonomers of polyethylene / polybutylene copolymer, polyisobutylene macromonomers; polybutadiene macromonomers; polyisoprene macromonomers; polybutadiene macromonomers; poly (ethylene / butylene) -polyisoprene macromonomers;
• Such macromonomers are in particular described in US5625005 which mentions ethylene / butylene and ethylene / propylene macromonomers with reactive (meth) acrylate end group.
• poly (ethylene / butylene) methacrylate such as that marketed under the name Kraton Liquid L-1253 by Kraton Polymers.
• silicone macromonomers mention may in particular be made of polydimethylsiloxanes with a mono (meth) acrylate end group, and in particular those of formula (II) below:
• R ⁇ denotes a hydrogen atom or a methyl group
• Rg denotes a divalent hydrocarbon group having from 1 to 10 carbon atoms and optionally contains one or two ether bonds -O-
• R10 denotes an alkyl group having from 1 to 10 carbon atoms, in particular from 2 to 8 carbon atoms
• n denotes an integer ranging from 1 to 300, preferably ranging from 3 to 200, and preferably ranging from 5 to 100.
• silicone macromonomers use may be made of monomethacryloxypropyl polydimethylsiloxanes such as those sold under the name PS560-K6 by the company United Chemical Technologies Inc. (UCT) or under the name MCR-M17 by the company Gelest Inc.
• the polymerized macromonomer (constituting the side chains of the grafted polymer) represents from 0.1 to 15% by weight of the total weight of the polymer, preferably from 0.2 to 10% by weight, and more preferably from 0.3 to 8% by weight.
• grafted ethylenic polymer dispersed in a non-silicone liquid fatty phase those obtained by polymerization can be used:
• grafted acrylic polymer dispersed in a silicone liquid fatty phase those obtained by polymerization can be used: methyl acrylate and the monomethacryloxypropylpolydimethylsiloxane macromonomer having a weight average molecular weight ranging from 800 to 6000, in particular in decamethylcyclopentasiloxane or phenyltrimethicone;
• Methyl acrylate acrylic acid and monomethacryloxypropylpolydimethylsiloxane monomonomer having a weight average molecular weight ranging from 800 to 6000, in particular in decamethylcyclopentasiloxane or phenyltrimethicone.
• the grafted polymer has a weight-average molecular mass (Mw) -comprises -between 10-000 -and-300 000, in particular between 20 000- and 2-00- 000, better still between 25 000 and 150 000
• the polymers in a given organic dispersion medium, have the capacity to fold in on themselves, thus forming particles of substantially spherical shape, with around the periphery of these particles the deployed side chains, which ensure the stability of these particles.
• Such particles resulting from the characteristics of the grafted polymer have the particularity of not agglomerating in said medium and therefore of self-stabilizing and of forming a dispersion of particularly stable polymer particles.
• the grafted ethylenic polymers of the dispersion can form nanometric particles, of average size ranging from 10 to 400 nm, preferably from 20 to 200 nm. Because of this very small size, the particles of polymer grafted in dispersion are particularly stable and therefore unlikely to form agglomerates.
• the dispersion of grafted polymer can therefore be a stable dispersion and does not form sediments, when it is placed for a prolonged period (for example 24 hours) at room temperature (25 ° C).
• the dispersion of particles of grafted polymer has a content of dry matter (or dry extract) in polymer which can range from 40% to 70% by weight of dry matter, in particular ranging from 45% to 65% by weight.
• the dispersion of grafted polymer particles can be prepared by a process comprising a step of radical copolymerization, in an organic polymerization medium, of one or more acrylic monomers as defined above with one or more macromonomers as defined above.
• liquid organic dispersion medium can be identical to or different from the polymerization medium.
• the copolymerization can be carried out in the presence of a polymerization initiator.
• the polymerization initiators can be radical initiators.
• such a polymerization initiator can be chosen from organic peroxide compounds such as dilauroyl peroxide, dibenzoyl peroxide, tert-butyl peroxy-2- ethylhexanoate; diazotized compounds such as azobisisobutyronitrile, azobisdimethylvalero-nitrile.
• the reaction can also be initiated using photoinitiators or by radiation such as UV, neutrons or plasma.
• the organic polymerization medium is introduced into a reactor of a size appropriate to the quantity of polymer that is to be produced, and / or additional vinyls, which will constitute, after polymerization, the insoluble skeleton, all of the macromonomer (which will constitute the side chains of the polymer) and part of the polymerization initiator.
• the reaction medium forms a relatively homogeneous medium.
• the reaction medium is then stirred and heated to a temperature to obtain a polymerization of the monomers and macromonomers. After a certain time, the initially homogeneous and clear medium leads to a dispersion of milky appearance. A mixture consisting of the remaining part of the monomers and of the polymerization initiator is then added. After an adequate time during which the mixture is heated with stirring, the medium stabilizes in the form of a milky dispersion, the dispersion comprising particles of polymers stabilized in the medium in which they were created, said stabilization being due to the presence , in the polymer, of side chains soluble in said dispersion medium.
• the graft polymer described above can be present in the composition according to the invention in a content ranging from 0.5% to 45% by weight, relative to the total weight of the composition, preferably ranging from 1% to 30% by weight , and preferably ranging from 2% to 25% by weight.
• composition - according to the invention - may comprise one or more coloring matters. chosen from water-soluble dyes, and pulverulent dyestuffs such as pigments, nacres and flakes well known to those skilled in the art.
• Dyestuffs may be present in the composition, in a content ranging from 0.01% to 50% by weight, relative to the weight of the composition, preferably from 0.01% to 30% by weight.
• pigments should be understood to mean particles of any shape, white or colored, mineral - or organic, insoluble in the physiological medium, intended to color the composition.
• the pigments can be white or colored, mineral and / or organic.
• mineral pigments mention may be made of titanium dioxide, optionally surface-treated, zirconium or cerium oxides, as well as oxides of zinc, iron (black, yellow or red) or chromium, violet of manganese, ultramarine blue, chromium hydrate and ferric blue, metallic powders such as aluminum powder, copper powder.
• organic pigments mention may be made of carbon black, pigments of D & C type, and lakes based on cochineal carmine, barium, strontium, calcium, aluminum.
• effect pigments such as particles comprising an organic or inorganic, natural or synthetic substrate, for example glass, acrylic resins, polyester, polyurethane, polyethylene terephthalate, ceramics or aluminas, said substrate being or not covered with metallic substances such as aluminum, gold, silver, platinum, copper, bronze, or metallic oxides such as titanium dioxide, iron oxide, chromium and their mixtures.
• the pearlescent pigments can be chosen from white pearlescent pigments such as
• the grafted polymer present in the composition according to the invention makes it possible to obtain a good homogeneous dispersion of the pulverulent dyestuffs such as pigments or nacres.
• the invention therefore also relates to a foundation composition
• a foundation composition comprising a dispersion of particles of ethylenic polymer grafted in a liquid fatty phase, as described above, and at least one coloring matter, in particular pigments, nacres, or any other charge with optical effect.
• the water-soluble dyes are, for example, beet juice, methylene blue.
• composition according to the invention may also further comprise one or more fillers, in particular in a content ranging from 0.01% to 50% by weight, relative to the total weight of the composition, preferably ranging from 0.01% at 30% by weight.
• fillers it is necessary to understand particles of any shape, colorless or white, mineral or synthetic, insoluble in the medium of the composition regardless of the temperature at which the composition is produced. These charges are used in particular to modify the rheology or the texture of the composition.
• the fillers can be mineral or organic of any shape, platelet, spherical or oblong, whatever the crystallographic form (for example sheet, cubic, hexagonal, orthorombic, etc.). Mention may be made of talc, mica, silica, kaolin, powders of polyamide (Nylon®) (Orgasol® from Atochem), -of poly- ⁇ -alanine and -of polyethylene, powders of -polymers -of - tetrafluoroethylene (Teflon®), lauroyl-lysine, starch, boron nitride, hollow polymeric microspheres such as those of polyvinylidene chloride / acrylonitrile such as Expancel® (Nobel Industry), of acrylic acid copolymers (Polytrap® from Dow Corning) and microbeads silicone resin (Tospearls® from Toshiba, for example), elastomeric polyorganosiloxane particles, precipitated calcium carbonate,
• composition according to the invention may also contain ingredients commonly used in cosmetics, such as vitamins, moisturizers, emollients, anti-free radical agents, thickeners, trace elements, softeners, sequestrants, perfumes , basifying or acidifying agents, preservatives, sunscreens, surfactants, antioxidants, gums, waxes, propellants, or mixtures thereof.
• ingredients commonly used in cosmetics such as vitamins, moisturizers, emollients, anti-free radical agents, thickeners, trace elements, softeners, sequestrants, perfumes , basifying or acidifying agents, preservatives, sunscreens, surfactants, antioxidants, gums, waxes, propellants, or mixtures thereof.
• the composition according to the invention can be in particular in the form of a suspension, dispersion, solution, gel, emulsion, in particular oil-in-water (O / W) or water-in-oil (W / O) emulsion ), or multiple (W / O / W or polyol / O / W or O / W / O), in the form of a cream, paste, foam, vesicle dispersion, in particular of ionic lipids or not, of two-phase lotion or multiphase, spray, powder, paste.
• the composition can be anhydrous, for example it can be a stick or an anhydrous paste.
• the composition can be a leave-in composition - - 0
• the invention also relates to a cosmetic assembly comprising: i) a container delimiting at least one compartment, said container being closed by a closing element; and ii) a composition placed inside said compartment, the composition being in accordance with the invention.
• the container can be in any suitable form. It can in particular be in the form of a bottle, a tube, a pot, a case, a box, a sachet or a case.
• the closure element may be in the form of a removable stopper, a cover, a cover, a tearable strip, or a capsule, in particular of the type comprising a body fixed to the container and an articulated cap. on the body. It can also be in the form of an element ensuring the selective closure of the container, in particular a pump, a valve, or a valve.
• the container can be associated with an applicator, in particular in the form of a block of foam or of elastomer, of a felt, or of a spatula.
• the applicator can be free (puff or sponge) or integral with a rod carried by the closure element, as described for example in US patent 5,492,426.
• the applicator can be integral with the container, as described for example the patent FR 2 761 959.
• the product can be contained directly in the container, or indirectly.
• the product can be placed on an impregnated support, in particular in the form of a wipe-or pad, -and-arranged (individually or several) -in- a box or in A sachet.
• an impregnated support in particular in the form of a wipe-or pad, -and-arranged (individually or several) -in- a box or in A sachet.
• Such a support incorporating the product is described for example in application WO 01/03538.
• the closure element can be coupled to the container by screwing.
• the coupling between the closure element and the container is done other than by screwing, in particular via a bayonet mechanism, by snap-fastening, tightening, welding, bonding, or by magnetic attraction.
• snap-fastening is meant in particular any system involving the crossing of a bead or a bead of material by elastic deformation of a portion, in particular of the closure element, then by return to the non-elastically constrained position of said portion after crossing the bead or cord.
• the container can be at least partly made of thermoplastic material.
• thermoplastic materials mention may be made of polypropylene or polyethylene.
• the container is made of non-thermoplastic material, in particular glass or metal (or alloy).
• the container may have rigid walls or deformable walls, in particular in the form of a tube or a tube bottle.
• the container may include means for causing or facilitating the distribution of the composition.
• the container may have deformable walls so as to cause the exit of the composition in response to an overpressure inside the container, which overpressure is caused by elastic (or inelastic) crushing of the walls of the container. .
• the latter can be driven by a piston mechanism.
• the container may include a mechanism, in particular rack and pinion, or with a threaded rod, or with a helical ramp, and able to move a stick in the direction of said opening.
• the container may consist of a housing with a bottom delimiting at least one housing containing the composition, and a cover, in particular articulated on the bottom, and capable of covering said bottom at least in part.
• a case is described, for example, in application WO 03/018423 or in patent FR 2,791,042.
• the container can be equipped with a wringer disposed near the opening of the container.
• a wringer makes it possible to wipe the applicator and possibly, the rod of which it may be integral.
• Such a wringer is described for example in patent FR 2 792 618.
• the composition can be at atmospheric pressure inside the container (at room temperature) or pressurized, in particular by means of a propellant gas (aerosol).
• a propellant gas as an aerosol
• the container is fitted with a valve (of the type used for aerosols).
• the present examples illustrate the preparation of polymers in accordance with the invention, capable of forming a dispersion of particles in a considered organic medium.
• the average molar masses by weight (Mw) and by number (Mn) of the polymer are determined, the glass transition temperature of the polymer, the dry matter (or dry extract) content of the dispersion and size of the polymer particles.
• the average molar masses by weight (Mw) and by number (Mn) are determined by liquid chromatography by gel permeation (THF solvent, calibration curve established with linear polystyrene standards, refractometric detector).
• THF solvent gel permeation
• the measurement of the glass transition temperature (Tg) is carried out according to standard ASTM D3418-97, by differential enthalpy analysis (DSC "Differential Scanning Calorimetry") on a calorimeter, over a temperature range between -100 ° C and +150 ° C at a heating rate of 10 ° C / min in 150 ⁇ l aluminum crucibles.
• the crucibles are prepared as follows: 100 ⁇ l of the dispersion obtained is introduced into an aluminum crucible of 150 ⁇ l and the solvent is allowed to evaporate for 24 hours at room temperature and at 50% relative humidity. The operation is repeated and then the crucible is introduced into the Mettler DSC30 calorimeter.
• the rate of dry matter (or dry extract), that is to say the content of non-volatile matter, can be measured in different ways: there may be mentioned, for example, methods by drying in an oven or methods by drying by exposure. to infrared radiation.
• the dry matter content is measured by heating the sample by infrared rays from 2 ⁇ m to 3.5 ⁇ m in wavelength.
• the substances contained in the composition which have a high vapor pressure evaporate under the effect of this radiation. Measuring the weight loss of the sample makes it possible to determine the dry extract of the composition.
• These measurements are carried out using a commercial infrared dryer LP16 from Mettler. This technique is fully described in the device documentation provided by Mettler.
• the measurement protocol is as follows: approximately 1 g of the composition is spread over a metal dish. This, after introduction into the desiccator, is subjected to a temperature set point of 120 ° C for one hour. The wet mass of the sample, corresponding to the initial mass and the dry mass of the sample. - corresponding to the mass after exposure to radiation, - are measured using a precision balance.
• Dry extract 100 x (dry mass / wet mass).
• Particle sizes can be measured by different techniques: we can cite in particular light scattering techniques (dynamic and static), Coulter counter methods, measurements by sedimentation speed (related to size via the law of Stokes) and microscopy. These techniques make it possible to measure a particle diameter and for some of them a particle size distribution.
• the sizes and size distributions of the particles of the compositions according to the invention are measured by static light scattering using a commercial granuiometer of the MasterSizer 2000 type from Malvern.
• the data is processed on the basis of Mie diffusion theory.
• This theory exact for isotropic particles, makes it possible to determine in the case of non-spherical particles, an "effective" diameter of particles.
• This theory is notably described in the work of Van de Hulst, HC, "Light Scattering by Small Particles," Chapters 9 and 10, Wiley, New York, 1957.
• the composition is characterized by its "effective" average diameter in volume D [4.3], defined as follows:
• Vj represents the volume of particles of effective diameter dj.
• This parameter is described in particular in the technical documentation of the granuiometer.
• the measurements are carried out at 25 ° C., on a dispersion of dilute particles, obtained from the composition as follows: 1) dilution by a factor of 100 with water, 2) homogenization of the solution, 3) rest of the solution for 18 hours, 4) recovery of the whitish homogeneous supernatant.
• the "effective" diameter is obtained by taking a refractive index of 1.33 for water and an average refractive index of 1.42 for particles.
• Example 1 This example illustrates the preparation of a polymer forming a dispersion of particles in a carbon solvent, said polymer being obtained by polymerization of methyl acrylate, acrylic acid and the macromonomer corresponding to a polyethylene / polybutylene copolymer (Kraton L-1253 ).
• Theoretical dry extract 54.9% in isododecane
• the grafted polymer comprises 8% by weight of macromonomer relative to the weight of the polymer.
• the stability of the dispersion obtained is demonstrated by the implementation of the following stability protocol: in a hemolysis tube, 8 ml of the dispersion carried out and centrifuged at 4000 rpm for 15 minutes using a Jouan C100-S5 centrifuge. After 15 minutes, we see that there is no phase shift, which shows that the dispersion is stable.
• This example illustrates the preparation of a polymer forming a dispersion of particles in a silicone solvent, said polymer being obtained by polymerization of methyl acrylate, acrylic acid and of monomethacryloxypropyl polydimethylsiloxane macromonomer having a weight average molecular weight of 5000 sold under the name MCR-M17 by the company Gelest Inc.
• the characteristics of the polymer and of the particles formed by said polymer are as follows: - Dry extract: 50% in decamethylcyclopentasiloxane produced by thermobalance
• This example illustrates the preparation of a polymer forming a dispersion of particles in a carbon solvent, said polymer being obtained by polymerization of methyl acrylate, acrylic acid and the macromonomer corresponding to a polyethylene / polybutylene copolymer (Kraton L-1253 ).
• the grafted polymer comprises 8% by weight of macromonomer relative to the weight of the polymer.
• This example illustrates the preparation of a polymer forming a dispersion of particles in a carbonaceous solvent, said polymer being obtained by polymerization of methyl acrylate, acrylic acid and the macromonomer corresponding to a polyethylene / polybutylene copolymer with methacrylate end group ( Kraton L-1253).
• the grafted polymer comprises 6% by weight of macromonomer relative to the weight of the polymer.
• This example illustrates the preparation of a polymer forming a dispersion of particles in a silicone oil, said polymer being obtained by polymerization of methyl acrylate and of the macromonomer monométhacryloxypropylpolydiméthylsiloxane having a weight average molecular weight of 5000 sold under the name MCR-M17 by Gelest Inc.
• the heating is maintained with stirring for an additional 15 minutes, then a mixture consisting of 160 g of methyl acrylate and 2 g of Trigonox 21 S. The heating is then left for 4 hours at 90 ° C. and then the heptane is distilled from the reaction medium.
• the grafted polymer comprises 5% by weight of macromonomer (therefore of side chain soluble in D5) relative to the weight of the polymer.
• the polymers of Examples 1 to 5 include the following monomers, their levels being indicated as a percentage by weight of the polymer:
• composition contains 2.1% by weight of graft polymer active material.
• Inwitor 780 K Mono-diglycerides of isosteroic acid esterified with succinic acid, sold by the company Sasol
• Silicone gum mixture of polydiphenyl dimethylsiloxane and cyclopentasiloxane (15/85) sold under the name Mirasil C (DPDM by the company RHODIA
• the 10% of pigments include:
• compositions have a transfer index in the presence of sebum of less than 4.
• compositions of Examples 6 to 8 have better resistance to transfer in the presence of sebum than the compositions of Examples 9 and 10. It is therefore found that the presence of acrylic acid in the grafted polymer promotes the non-transfer property of the deposit obtained with the composition.

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