US20090130037A1 - Method of Applying Makeup to a Surface and a Kit for Implementing such a Method - Google Patents

Method of Applying Makeup to a Surface and a Kit for Implementing such a Method Download PDF

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Publication number
US20090130037A1
US20090130037A1 US11/663,977 US66397705A US2009130037A1 US 20090130037 A1 US20090130037 A1 US 20090130037A1 US 66397705 A US66397705 A US 66397705A US 2009130037 A1 US2009130037 A1 US 2009130037A1
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Prior art keywords
polymer
composition
monomers
magnetic
particles
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US11/663,977
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English (en)
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Ludovic Thevenet
Xavier Blin
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LOreal SA
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LOreal SA
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Assigned to L'OREAL reassignment L'OREAL ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: BLIN, XAVIER, THEVENET, LUDOVIC
Publication of US20090130037A1 publication Critical patent/US20090130037A1/en
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    • A—HUMAN NECESSITIES
    • A45—HAND OR TRAVELLING ARTICLES
    • A45D—HAIRDRESSING OR SHAVING EQUIPMENT; EQUIPMENT FOR COSMETICS OR COSMETIC TREATMENTS, e.g. FOR MANICURING OR PEDICURING
    • A45D34/00—Containers or accessories specially adapted for handling liquid toiletry or cosmetic substances, e.g. perfumes
    • A—HUMAN NECESSITIES
    • A45—HAND OR TRAVELLING ARTICLES
    • A45D—HAIRDRESSING OR SHAVING EQUIPMENT; EQUIPMENT FOR COSMETICS OR COSMETIC TREATMENTS, e.g. FOR MANICURING OR PEDICURING
    • A45D33/00—Containers or accessories specially adapted for handling powdery toiletry or cosmetic substances
    • 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
    • A61K8/19—Cosmetics or similar toiletry preparations characterised by the composition containing inorganic ingredients
    • 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
    • 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
    • A61Q3/00—Manicure or pedicure preparations
    • A61Q3/02—Nail coatings
    • A—HUMAN NECESSITIES
    • A45—HAND OR TRAVELLING ARTICLES
    • A45D—HAIRDRESSING OR SHAVING EQUIPMENT; EQUIPMENT FOR COSMETICS OR COSMETIC TREATMENTS, e.g. FOR MANICURING OR PEDICURING
    • A45D29/00—Manicuring or pedicuring implements
    • A45D29/004—Masking devices for applying polish to the finger nails
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K2800/00—Properties of cosmetic compositions or active ingredients thereof or formulation aids used therein and process related aspects
    • A61K2800/40—Chemical, physico-chemical or functional or structural properties of particular ingredients
    • A61K2800/42—Colour properties
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K2800/00—Properties of cosmetic compositions or active ingredients thereof or formulation aids used therein and process related aspects
    • A61K2800/40—Chemical, physico-chemical or functional or structural properties of particular ingredients
    • A61K2800/47—Magnetic materials; Paramagnetic compounds
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K2800/00—Properties of cosmetic compositions or active ingredients thereof or formulation aids used therein and process related aspects
    • A61K2800/80—Process related aspects concerning the preparation of the cosmetic composition or the storage or application thereof
    • A61K2800/88—Two- or multipart kits

Definitions

  • the present invention relates to applying makeup to keratinous substances, in particular the skin, the lips, the nails, or hair, e.g. the eyelashes.
  • the applicant company has internally developed makeup compositions, in particular for the lips, that include magnetic particles that are capable, in the presence of a magnetic field, of being oriented and/or displaced, and of causing new optical effects.
  • the invention seeks to propose a composition for applying to keratinous substances, in particular the skin or the lips, that enables a durable result to be obtained.
  • the invention provides a method of making up keratinous substances, especially the skin and lips, comprising the following steps:
  • the presence of at least one volatile solvent, especially a volatile oil, is advantageous since immediately after application it endows the magnetic particles with a certain mobility under the effect of a magnetic field, and following a certain drying period, it also immobilizes those particles in the orientation imposed upon them.
  • the composition includes at least one film-forming polymer, which can further enhance immobilization of the particles after drying.
  • the magnetic field may be applied to form at least one pattern on the composition, the pattern being linked to the shape of the field lines, for example.
  • a layer of a second cosmetic composition may be applied to the layer containing the magnetic bodies, for example to obtain an effect of depth, gloss, smoothness, or otherwise.
  • Said second composition may be transparent, colored or not colored.
  • the second composition may also be applied to the surface before the first composition, for example to create a colored background or to improve the hold of the first composition and/or for comfort.
  • the magnetic field may be applied until the composition containing the magnetic bodies obtains a fixed appearance, i.e. the appearance of said composition ceases to vary even if the magnetic field continues to exist.
  • the magnetic field may be applied for a period of time that is shorter than the period of time that causes all of the magnetic bodies in the exposed region to be permanently displaced and/or oriented. Since the clarity and/or the color of the composition change progressively under the effect of the magnetic field, the user can stop subjecting the magnetic bodies to the field when the first composition presents the desired appearance.
  • the magnetic field may be exerted successively on different regions of the surface that are coated with the composition.
  • the magnetic field may be exerted on regions of the surface that are disjoint, so as to create separate patterns, for example.
  • a region of the surface coated with the composition need not be exposed to the magnetic field, so as not to modify the appearance of the composition in said region after it has been deposited.
  • Two regions of the surface may be exposed unequally to the magnetic field.
  • the composition may be applied in various ways, e.g. by means of a cosmetics applicator that is preferably non-magnetic and that is selected from brushes, flocked endpieces, foams, woven fabrics, non-woven fabrics, brushes, or combs, for example, or it may be applied without using an applicator, with the composition being spread on with the fingers, or sprayed on, for example.
  • a cosmetics applicator that is preferably non-magnetic and that is selected from brushes, flocked endpieces, foams, woven fabrics, non-woven fabrics, brushes, or combs, for example, or it may be applied without using an applicator, with the composition being spread on with the fingers, or sprayed on, for example.
  • the invention also provides a kit for implementing the method described above.
  • Said kit may comprise:
  • composition further comprises at least one film-forming polymer.
  • the magnetic device may comprise at least one permanent magnet or an electromagnet powered, for example, by a battery, in which case the magnetic device may include a switch so that the electromagnet can be powered selectively with electricity.
  • the magnetic device of the kit may be arranged to create a magnetic field of orientation that varies with time.
  • the device may, for example, include a motor to rotate the magnet.
  • the magnetic device may include a plurality of solenoids disposed so that, when sequentially powered with electricity, a rotating magnetic field is generated.
  • a rotary magnetic field may, for example, produce a pattern with symmetry of revolution, for example a pattern giving the impression of a sphere in relief.
  • the electromagnet or electromagnets may be powered permanently or intermittently, as dictated by the user.
  • the magnetic device of the kit may be arranged so that the electromagnet or electromagnets are not powered while the magnetic device is not correctly positioned close to the surface coated with composition.
  • the magnetic field is, for example, at least 50 mT [megaTorr], or even at least 0.2 T or 1 T.
  • the magnetic device of the kit may include a member that allows it to be positioned relative to the surface on which the composition has been deposited. This may, for example, prevent the magnetic device from accidentally coming into contact with the composition and/or to allow the pattern produced to be centered on the region concerned.
  • the magnetic device of the kit may be attached to an applicator allowing the cosmetic composition to be applied. This reduces the number of articles that are manipulated by the user and facilitates making up.
  • the magnetic device of the kit may include a magnet mounted at one end of a rod having its other end connected to a grip member of an applicator serving to apply the cosmetic composition.
  • the magnetic field may also be exerted by means of a magnetic structure, especially a flexible structure, comprising alternating N and S poles.
  • a magnetic structure especially a flexible structure, comprising alternating N and S poles.
  • Such a structure may, for example, produce repeating patterns on the composition, for example stripes.
  • the kit may include a casing housing the cosmetic composition and the magnetic device.
  • the casing may then include a plurality of magnets of different shapes to produce different patterns.
  • the invention provides a cosmetic composition comprising:
  • the composition includes at least one film-forming polymer.
  • FIG. 1 diagrammatically shows an example of a kit for carrying out the method
  • FIG. 2 shows the composition being applied to the lips
  • FIG. 3 shows exposure of the composition to a magnetic field.
  • the kit 1 shown in FIG. 1 comprises a receptacle 2 containing a fluid composition C for application to the lips, and an applicator 3 comprising an application member 4 mounted at one end of a rod 5 having its other end connected to a grip member 6 that also constitutes a closure for the receptacle 2 .
  • the receptacle 2 is provided with a wiper member 7 for the rod 5 and the application member 4 , in conventional manner.
  • the kit 1 also comprises a magnetic device 10 which is constituted by a permanent magnet, for example, but which in a variation (not shown) may comprise at least one electromagnet, or a magnet that is attached to a mechanical or electromechanical system causing it to move in a predetermined manner to create a pattern with the desired shape on the deposit of the composition to be produced.
  • a magnetic device 10 which is constituted by a permanent magnet, for example, but which in a variation (not shown) may comprise at least one electromagnet, or a magnet that is attached to a mechanical or electromechanical system causing it to move in a predetermined manner to create a pattern with the desired shape on the deposit of the composition to be produced.
  • the kit 1 is used by firstly applying the composition C using the applicator 3 , as shown in FIG. 2 , for example in the form of one or more thin layers then, as shown in FIG. 3 , by exposing the composition that has been deposited to a magnetic field before it dries, to enable the desired pattern to be formed.
  • the composition contains at least one volatile solvent.
  • volatile solvent as used in the context of the present invention means a solvent that is liquid at ambient temperature, having a non-zero vapor pressure at ambient temperature and atmospheric pressure, in particular a vapor pressure in the range 0.13 pascals (Pa) to 40000 Pa (10 ⁇ 3 millimeters of mercury (mm Hg) to 300 mm Hg), and preferably in the range 1.3 Pa to 13000 Pa (0.01 mm Hg to 100 mm Hg), and preferably in the range 1.3 Pa to 1300 Pa (0.01 mm Hg to 10 mm Hg).
  • the quantity of solvent(s) depends on the nature of the surface to which the composition is intended to be applied.
  • the solvent may be selected from water, organic solvents, and oils.
  • the oil may be a silicone oil or a hydrocarbon oil, or may include a mixture of such oils.
  • silicon oil as used in the context of the present invention means an oil including at least one silicon atom, and in particular at least one Si—O group.
  • hydrocarbon oil means an oil containing mainly hydrogen and carbon atoms and possibly oxygen, nitrogen, sulfur, and/or phosphorus atoms.
  • the volatile hydrocarbon oils may be selected from hydrocarbon oils having 8 to 16 carbon atoms, and in particular C8-C16 branched alkanes (also termed isoparaffins) such as isododecane (also termed 2,2,4,4,6-pentamethylheptane), isodecane, isohexadecane, and oils sold under the trade names Isopars® or Permethyls®, for example.
  • isoparaffins also termed isododecane (also termed 2,2,4,4,6-pentamethylheptane)
  • isodecane also termed 2,2,4,4,6-pentamethylheptane
  • isodecane also termed 2,2,4,4,6-pentamethylheptane
  • isodecane isohexadecane
  • oils sold under the trade names Isopars® or Permethyls® for example.
  • Volatile oils that may also be used are volatile silicones, such as volatile linear or cyclic silicone oils, for example, in particular oils having a viscosity ⁇ 8 centistokes (cSt) (8 ⁇ 10 ⁇ 6 square meters per second (m 2 /s)), and having in particular 2 to 10 silicon atoms, and in particular 2 to 7 silicon atoms, the silicones possibly including alkyl or alkoxy groups having 1 to 10 carbon atoms.
  • volatile silicones such as volatile linear or cyclic silicone oils, for example, in particular oils having a viscosity ⁇ 8 centistokes (cSt) (8 ⁇ 10 ⁇ 6 square meters per second (m 2 /s)), and having in particular 2 to 10 silicon atoms, and in particular 2 to 7 silicon atoms, the silicones possibly including alkyl or alkoxy groups having 1 to 10 carbon atoms.
  • cSt centistokes
  • suitable volatile silicone oils are in particular dimethicones having a viscosity of 5 cSt to 6 cSt, octamethylcyclotetrasiloxane, decamethylcyclopentasiloxane, dodecamethylcyclohexasiloxane, heptamethylhexyltrisiloxane, heptamethyloctyltrisiloxane, hexamethyldisiloxane, octamethyltrisiloxane, decamethyltetrasiloxane, dodecamethylpentasiloxane, and mixtures thereof.
  • fluorinated volatile oils such as nonafluoromethoxybutane or perfluoromethylcyclopentane, and mixtures thereof.
  • a composition of the invention may contain 0.01% to 95% by weight of volatile oil relative to the total weight of the composition, and preferably 1% to 75% by weight.
  • composition may comprise at least one organic solvent selected from the following list:
  • the composition may also comprise water or a mixture of water and hydrophilic organic solvents which are routinely used in cosmetics, such as alcohols, in particular linear or branched lower monoalcohols containing 2 to 5 carbon atoms, such as ethanol, isopropanol or n-propanol, polyols such as glycerine, diglycerine, propylene glycol, sorbitol, penthylene glycol, or polyethylene glycols, hydrophilic C 2 ethers and C 2 -C 4 aldehydes.
  • hydrophilic organic solvents which are routinely used in cosmetics, such as alcohols, in particular linear or branched lower monoalcohols containing 2 to 5 carbon atoms, such as ethanol, isopropanol or n-propanol, polyols such as glycerine, diglycerine, propylene glycol, sorbitol, penthylene glycol, or polyethylene glycols, hydrophilic C 2
  • the water or mixture of water and hydrophilic organic solvents may be present in the composition in an amount in the range 0% to 90%, in particular 0.1% to 90% by weight, and preferably 0% to 60% by weight, more particularly 0.1% to 60% by weight relative to the total weight of the composition.
  • the composition applied contains at least one film-forming polymer.
  • film-forming polymer means a polymer that can form, by itself or in the presence of an additional film-forming agent, a continuous film that adheres to a surface, in particular to keratinous substances, and preferably a cohesive film, and better still a film having cohesion and mechanical properties such that said film may be isolated from said surface.
  • Suitable film-forming polymers for use in the composition of the invention include synthetic polymers, of the radical or polycondensate type, natural polymers, and mixtures thereof.
  • film-forming polymers mention may be made in particular of acrylic polymers, polyurethanes, polyesters, polyamides, polyureas, and cellulose/cellulosic polymers, such as nitrocellulose.
  • Said film-forming polymers may be separated into four categories depending on their solubility as regards an aqueous phase or a liquid oily phase.
  • the film-forming polymer is at least one polymer selected from the group comprising:
  • the film-forming polymer contains silicone and may be selected from polymers with a non-silicone organic backbone grafted with monomers containing a polysiloxane.
  • the film-forming polymer contains silicone and is selected from silicone polymers grafted with non-silicone organic monomers.
  • Said polymers may be liposoluble, lipodispersible, hydrosoluble, or dispersible in an aqueous medium, as appropriate.
  • the quantities of film-forming agent in the compositions of the invention can vary significantly, especially as a function of the nature of the film-forming agent under consideration and also of the desired qualities of the composition into which it is incorporated.
  • the cosmetic compositions of the invention may contain an amount of film-forming polymer(s) which can be from 0.01% to 65% by weight, especially 0.1% to 60% by weight, in particular 1% to 45% by weight relative to the total composition weight.
  • the composition may comprise, as a polymer, a dispersion of particles of a graft ethylenic polymer in a liquid oily phase.
  • ethylenic polymer means a polymer obtained by polymerizing monomers comprising an ethylenically unsaturated bond.
  • the dispersion of graft ethylenic polymer is exempt of stabilizing polymer which is distinct from said graft polymer, such as those described in EP-A-0 749 747 and described below, and the surfaces of the particles of graft ethylenic polymer are thus not stabilized by said additional stabilizing polymers.
  • the graft polymer is thus dispersed in the liquid oily phase in the absence of additional stabilizer at the particle surface.
  • graft polymer means a polymer having a backbone comprising at least one pendant side chain or chain located at a chain end, preferably a pendant chain
  • the graft ethylenic polymer comprises an ethylenic backbone that is insoluble in the liquid oily phase, and side chains which are covalently bonded to said backbone and are soluble in the liquid oily phase.
  • the graft ethylenic polymer is a non cross-linked polymer.
  • the polymer is obtained by polymerizing monomers comprising a single polymerizable group.
  • the graft ethylenic polymer is a graft acrylic polymer, for example.
  • the graft ethylenic polymer is capable of being obtained by radical polymerization, in an organic polymerization medium, of:
  • the liquid oily phase may contain the organic medium for polymerizing the graft ethylenic polymer.
  • the liquid organic dispersion medium corresponding to the medium in which the graft polymer is supplied, may be identical to the polymerization medium.
  • the polymerization medium may be wholly or partially substituted by another liquid organic medium. After polymerization, said other liquid organic medium may be added, to the polymerization medium. The medium is then completely or partially evaporated off.
  • the liquid oily phase may contain liquid organic compounds other than those present in the dispersion medium. Said other compounds are selected so that the graft polymer remains in the dispersed state in the liquid oily phase.
  • the liquid organic dispersion medium may be present in the liquid oily phase of the composition of the invention because the graft polymer dispersion obtained is introduced into the composition.
  • the liquid oily phase preferably mainly comprises one or more liquid organic compounds (or oils) as defined below.
  • the liquid oily phase may be a non-aqueous liquid organic phase which is not miscible with water at ambient temperature (25° C.).
  • liquid organic compound means a non-aqueous compound which is in the liquid state at ambient temperature (25° C.) and which thus flows under its own weight.
  • liquid organic compounds or oils which may be present in the liquid organic dispersion medium that may be mentioned are:
  • solubility parameter ⁇ in the Hansen solubility space is defined in the article “Solubility parameter values” by Eric A Grulke in the “Polymer Handbook”, 3 rd edition, Chapter VII, p 519-559 by the relationship:
  • organic liquid compounds especially non-silicone or silicone, with an overall solubility parameter in the Hansen solubility space of 18 (MPa) 1/2 or less that may be mentioned are liquid fats, especially oils, which may be selected from carbon-containing, hydrocarbon-containing, fluorinated, silicone, optionally branched natural or synthetic oils, used alone or as a mixture.
  • oils formed by esters of fatty acids and polyols, in particular triglycerides, such as sunflower seed oil, sesame seed oil or rapeseed oil, or esters derived from long chain alcohols or acids (i.e. containing 6 to 20 carbon atoms), especially esters with formula RCOOR′ in which R represents the residue of a higher fatty acid containing 7 to 19 carbon atoms and R′ represents a hydrocarbon chain containing 3 to 20 carbon atoms, such as palmitates, adipates, or benzoates, especially diisopropyl adipate.
  • esters of fatty acids and polyols in particular triglycerides, such as sunflower seed oil, sesame seed oil or rapeseed oil, or esters derived from long chain alcohols or acids (i.e. containing 6 to 20 carbon atoms), especially esters with formula RCOOR′ in which R represents the residue of a higher fatty acid containing 7 to 19 carbon atoms and R′ represents a hydro
  • Linear, branched, and/or cyclic alkanes which may be volatile, may also be mentioned, in particular paraffin oil, Vaseline oil or hydrogenated polyisobutylene, isododecane or ISOPARS, which are volatile isoparaffins.
  • Esters, ethers and ketones may also be mentioned.
  • silicone oils such as polydimethylsiloxanes and polymethylphenylsiloxanes, optionally substituted with aliphatic and/or aromatic groups, optionally fluorinated, or by functional groups such as hydroxyl groups, thiols and/or amines, and volatile silicone oils, in particular cyclic oils.
  • silicone oils which may be branched, volatile, and/or non volatile, may be mentioned.
  • non-silicone liquid organic compounds with an overall solubility in the Hansen solubility space of 18 (MPa) 1/2 or less may be mentioned:
  • liquid mono-alcohols having an overall solubility parameter in the Hansen solubility space of 20 (MPa) 1/2 means liquid aliphatic fatty mono-alcohols containing 6 to 30 carbon atoms, the hydrocarbon chain having no substitution group.
  • Mono-alcohols in accordance with the invention that may be mentioned are oleic alcohol, decanol, octyldodecanol and linoleic alcohol.
  • the macromonomers present in the grafted polymer are advantageously carbon-containing macromonomers as described below.
  • the graft polymer present in the composition is advantageously a non-silicone graft polymer.
  • non-silicone graft polymer means a graft polymer containing a mainly carbon-containing macromonomer and optionally containing at most 7% by weight, preferably at most 5% by weight or even no silicone macromonomer.
  • the macromonomers present in the graft polymer are advantageously silicone macromonomers as described below.
  • the graft polymer present in the composition is advantageously a silicone graft polymer.
  • silicone graft polymer means a graft polymer mainly containing a silicone macromonomer and optionally containing at most 7% by weight, preferably at most 5% by weight, or even no carbon-containing macromonomer.
  • the choice of monomers constituting the backbone of the polymer, the macromonomers, the molecular weight of the polymer, and the proportion of monomers and macromonomers may be made as a function of the liquid organic dispersion medium to advantageously obtain a dispersion of particles of graft polymers, in particular a stable dispersion; this choice can be made by the skilled person.
  • stable dispersion means a dispersion which is not capable of forming a solid deposit or of liquid/solid phase separation, in particular after centrifuging, for example at 4000 rpm for 15 minutes.
  • the graft ethylenic polymer forming the particles in dispersion thus comprises a backbone that is insoluble in said dispersion medium and a portion that is soluble in said dispersion medium.
  • the graft ethylenic polymer may be a random polymer.
  • graft ethylenic polymer means a polymer that can be obtained by radical polymerization:
  • graft acrylic polymer means a polymer that can be obtained by radical polymerization:
  • the acrylic monomers represent 50% to 100% by weight, preferably 55% to 100% by weight (in particular 5% to 95% by weight), preferably 60% to 100% by weight (in particular 60% to 90% by weight) of the (acrylic monomer+any non-acrylic vinyl monomer) mixture.
  • the acrylic monomers are selected from monomers, the homopolymer of which is insoluble in the dispersion medium under consideration, i.e. the homopolymer is in the solid (or undissolved) form at a concentration of 5% by weight or more at ambient temperature (20° C.) in said dispersion medium.
  • the term “macromonomer having a polymerizable terminal group” means any polymer having at only one of its ends a polymerizable terminal group that can react during the polymerization reaction with the acrylic monomers and the optional additional non-acrylic vinyl monomers constituting the backbone.
  • the macromonomer can form side chains of graft acrylic polymer.
  • the polymerizable group of the macromonomer may advantageously be a group with an ethylenically unsaturated bond that can polymerize by radical polymerization with the monomers constituting the backbone.
  • carbon-containing macromonomer means a non-silicone macromonomer, especially an oligomeric macromonomer obtained by polymerizing non-silicone monomer(s) with an ethylenically unsaturated bond, and principally by polymerizing acrylic and/or non-acrylic vinyl monomers.
  • silicon macromonomer means an organopolysiloxane macromonomer, in particular a polydimethylsiloxane macromonomer.
  • the macromonomer is selected from macromonomers the homopolymer of which is soluble in the dispersion medium under consideration, i.e. completely dissolved in a concentration which is 5% by weight or more and at ambient temperature in said dispersion medium.
  • the graft acrylic polymer includes a backbone (or principal chain) constituted by a concatenation of acrylic patterns especially resulting from polymerization of one or more acrylic monomers and side chains (or grafts) derived from reacting the macromonomers, said side chains being covalently bonded to said principal chain.
  • the backbone (or principal chain) is insoluble in the dispersion medium under consideration, while the side chains (or grafts) are soluble in said dispersion medium.
  • acrylic monomer as used in the present application means monomers selected from (meth)acrylic acid, esters of (meth)acrylic acid (also termed (meth)acrylates), and amides of (meth)acrylic acid (also termed (meth)acrylamides).
  • acrylic monomers that can be used to form the insoluble polymer backbone when used alone or as a mixture are as follows, along with salts thereof:
  • R 2 examples include methyl, ethyl, propyl, butyl, isobutyl, methoxyethyl, ethoxyethyl, methoxy-polyoxyethylene 350 OE, trifluoroethyl, 2-hydroxyethyl, 2-hydroxypropyl, dimethylaminoethyl, diethylaminoethyl and dimethylaminopropyl.
  • alkyl groups which may constitute R 4 and R 5 , that may be mentioned are n-butyl, t-butyl, n-propyl, dimethylaminoethyl, diethylaminoethyl and dimethylaminopropyl:
  • (meth)acrylic monomers comprising at least one carboxylic, phosphoric or sulfonic acid function, such as acrylic acid, methacrylic acid or acrylamidopropanesulfonic acid.
  • acrylic monomers that may be mentioned are 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; dimethylaminopropyl methacrylamide; salts thereof; and mixtures thereof.
  • the acrylic monomers are selected from methyl acrylate, methoxyethyl acrylate, methyl methacrylate, 2-hydroxyethyl methacrylate, acrylic acid, dimethylaminoethyl methacrylate, and mixtures thereof.
  • non-acrylic vinyl monomers that may be mentioned include:
  • acrylic monomers present in the graft polymer comprise at least one (meth)acrylic acid and at least one monomer selected from the (meth)acrylates and (meth)acrylamides described above under points i) and ii).
  • the acrylic monomers comprise at least one (meth)acrylic acid and at least one monomer selected from C 1 -C 3 alkyl (meth)acrylates.
  • the (meth)acrylic acid may be present in an amount of at least 5% by weight relative to the total polymer weight, especially from 5% to 80% by weight, preferably at least 10% by weight, in particular from 10% by weight to 70% by weight, preferably at least 15% by weight, in particular 15% to 60% by weight.
  • Salts that may be mentioned include those obtained by neutralizing acid groups using inorganic bases such as sodium hydroxide, potassium hydroxide, or ammonium hydroxide or alkanolamine type organic bases such as monoethanolamine, diethanolamine, triethanolamine or 2-methyl-2-amino-1-propanol.
  • inorganic bases such as sodium hydroxide, potassium hydroxide, or ammonium hydroxide or alkanolamine type organic bases such as monoethanolamine, diethanolamine, triethanolamine or 2-methyl-2-amino-1-propanol.
  • Salts formed by neutralizing tertiary amine moieties, for example using a mineral or organic acid may also be mentioned.
  • Mineral acids that may be mentioned include sulfuric acid and hydrochloric acid, hydrobromic acid, hydroiodic acid, phosphoric acid and boric acid.
  • Organic acids that may be mentioned include acids comprising one or more carboxylic, sulfonic or phosphonic groups. It may concern linear, branched or cyclic aliphatic acids, or aromatic acids. Said acids may also include one or more heteroatoms selected from O and N, for example in the form of hydroxyl groups. In particular, acetic acid and propionic acid, terephthalic acid and citric and tartaric acid may be mentioned.
  • the graft ethylenic polymer contains no additional non-acrylic vinyl monomers as described above.
  • the insoluble backbone of the graft ethylenic polymer is formed solely of acrylic monomers as described above.
  • non-polymerized acrylic monomers may be soluble in the dispersion medium under consideration, but the polymer formed with said monomers is insoluble in the dispersion medium.
  • the ethylenic graft polymer may be obtained by radical polymerization in an organic polymerization medium:
  • the principal acrylic monomer may be methyl acrylate, methyl methacrylate, ethyl acrylate, ethyl methacrylate, n-propyl acrylate, n-propyl methacrylate, isopropyl acrylate or isopropyl methacrylate, and mixtures thereof.
  • methyl acrylate, methyl methacrylate and ethyl methacrylate may be mentioned.
  • the additional acrylic monomers may be selected from:
  • R′ 2 examples include methoxyethyl, ethoxyethyl, trifluoroethyl; 2-hydroxyethyl, 2-hydroxypropyl, dimethylaminoethyl, diethylaminoethyl and dimethylaminopropyl.
  • acrylic monomers that may be mentioned include (meth)acrylic acid, methoxyethyl or ethoxyethyl (meth)acrylates; trifluoroethyl methacrylate; dimethylaminoethyl methacrylate, diethylaminoethyl methacrylate, 2-hydroxypropyl methacrylate, 2-hydroxyethyl methacrylate, 2-hydroxypropyl acrylate, 2-hydroxyethyl acrylate, salts and mixtures thereof.
  • acrylic acid and methylacrylic acid may be mentioned.
  • Macromonomers include a polymerizable terminal group at one end of the chain which can react during polymerization with acrylic monomers, and optional additional vinyl monomers, to form the side chains of the graft ethylenic polymer.
  • Said polymerizable terminal group may in particular be a vinyl group or a (meth)acrylate (or (meth)acryloxy) group, preferably a (meth)acrylate group.
  • the macromonomers are preferably selected from macromonomers wherein the homopolymer has a glass transition temperature (Tg) of 25° C. or less, especially from ⁇ 100° C. at 25° C., preferably from ⁇ 80° C. to 0° C.
  • Tg glass transition temperature
  • the macromonomers have a mass average molecular mass of 200 or more, preferably 300 or more, more preferably 500 or more, and still more preferably more than 600.
  • the macromonomers have a mass average molecular mass (Mw) of 200 to 100000, preferably 500 to 50000, more preferably 800 to 20000, still more preferably 800 to 10000 and still more preferably 800 to 6000.
  • Mw mass average molecular mass
  • mass average molecular masses (Mw) and number average molecular masses (Mn) were determined by gel permeation liquid chromatography (THF solvent, calibration curve established with linear polystyrene specimens, refractometric detector).
  • macromonomers based on poly(2-ethylhexyl acrylate) or poly(dodecyl acrylate) with a mono(meth)acrylate end may be mentioned.
  • polyolefins having a terminal group with an ethylenically unsaturated bond, in particular a (meth)acrylate terminal group.
  • polyolefins that may be mentioned are the following macromonomers, it being understood that they have a (meth)acrylate terminal group: polyethylene macromonomers, polypropylene macromonomers, polyethylene/polypropylene copolymer macromonomers, polyethylene/polybutylene copolymer macromonomers, polyisobutylene macromonomers; polybutadiene macromonomers; polyisoprene macromonomers; polybutadiene macromonomers; and poly(ethylene/butylene)-polyisoprene macromonomers.
  • poly(ethylene/butylenes) methacrylate may be mentioned, such as that sold under the trade name KRATON LIQUID L-1253 by KRATON POLYMERS.
  • silicone macromonomers examples include polydimethylsiloxanes with a mono (meth)acrylate terminal group, in particular those with the following formula (XI):
  • silicone macromonomers which may be used are monomethacryloxypropyl polydimethylsiloxanes such as those sold under the trade name PS560-K6 by UNITED CHEMICAL TECHNOLOGIES INC. (UCT) or under the trade name MCR-M17 by GELEST INC.
  • the polymerized macromonomer (constituting the side chains of the graft polymer) represents 0.1% to 15% by weight of the total polymer weight, preferably 0.2% to 10% by weight, and more preferably 0.3% to 8% by weight.
  • graft acrylic polymer dispersed in a silicone liquid oily phase may be selected from those obtained by polymerizing:
  • the graft polymer has a mass average molecular mass (Mw) in the range 10000 to 300000, especially in the range 20000 to 200000, more preferably in the range 25000 to 150000.
  • the polymers have the ability to fold upon themselves thereby forming particles which are substantially spherical in shape, with the deployed side chains on the circumference of said particles, stabilizing the particles.
  • Said particles resulting from the graft polymer characteristics do not agglomerate in said medium and thus self-stabilize and form a dispersion of particles of polymer which is particularly stable.
  • the graft ethylenic polymers of the dispersion may form nanometric particles with a mean size of 10 nm [nanometer] to 400 nm, preferably 20 nm to 200 nm.
  • the particles of graft polymer in dispersion are particularly stable and thus less likely to form agglomerates.
  • the graft polymer dispersion may thus be a stable dispersion and not form sediments when placed for a prolonged period (for example 24 hours) at ambient temperature (25° C.).
  • the dispersion of graft polymer particles has a dry matter content (dry extract) of polymer which may be from 40% to 70% by weight of dry matter, especially 45% to 65% by weight.
  • the graft polymer particle dispersion may be prepared by a method comprising a radical copolymerization step, 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 may be identical to or different from the polymerization medium.
  • the polymerization initiators may be radical initiators.
  • a polymerization initiator may be selected from organic peroxide compounds such as dilauroyl peroxide, dibenzoyl peroxide, tert-butyl 2-peroxyethylhexanoate; and from diazo compounds such as azobisisobutyronitrile or azobisdimethylvaleronitrile.
  • the reaction may also be initiated using photoinitiators or radiation such as UV, neutrons or a plasma.
  • the organic polymerization medium part of the acrylic monomers and/or additional vinyl monomers which, after polymerization, constitute the insoluble backbone, all of the macromonomer (which constitutes the side chains of the polymer) and a portion of the polymerization initiator are introduced into a reactor of suitable size for the quantity of polymer to be produced.
  • the reaction medium forms a relatively homogeneous medium.
  • the reaction medium is then stirred and heated to a temperature to obtain polymerization of the monomers and macromonomers. After a certain period, the initially homogeneous and clear medium takes on a milky appearance. A mixture constituted by the remaining portion of the monomers and the polymerization initiator is then added. After a suitable period during which the mixture is heated with stirring, the medium stabilizes into the form of a milky dispersion, the dispersion comprising polymer particles stabilized in the medium in which they were created, said stabilization being due to the presence, in the polymer, of side chains which are soluble in said dispersion medium.
  • the graft polymer may be present in the composition of the invention in a dry matter content (active substance) of 1% to 70% by weight relative to the total composition weight, preferably 5% to 60%, more preferably 6% to 45% and still more preferably 8% to 40% by weight.
  • the film-forming polymer is an organic film-forming polymer which is soluble in the liquid oily phase of the composition, especially in the oil or oils of the composition.
  • the liposoluble polymer may be of any chemical type and may in particular be selected from:
  • Preferred liposoluble homopolymers and copolymers are obtained from monomers selected from the group constituted by isooctyl (meth)acrylate, isononyl (meth)acrylate, 2-ethylhexyl (meth)acrylate, lauryl (meth)acrylate, isopentyl (meth)acrylate, n-butyl (meth)acrylate, isobutyl (meth)acrylate, methyl (meth)acrylate, tertio-butyl (meth)acrylate, tridecyl (meth)acrylate, stearyl (meth)acrylate, or mixtures thereof.
  • VP copolymers which may be used in the invention that may be mentioned are VP/vinyl laurate copolymer, VP/vinyl stearate copolymer, butylated polyvinylpyrrolidone (PVP), VP/hexadecene, VP/triacontene or VP/acrylic acid/lauryl methacrylate.
  • PVP polyvinylpyrrolidone
  • silicone graft acrylic polymers having a silicone backbone, and acrylic grafts or an acrylic backbone and silicone grafts such as the product sold under the trade name SA 70.5 by 3M and described in U.S. Pat. No. 5,725,882, U.S. Pat. No. 5,209,924, U.S. Pat. No. 4,972,037, U.S. Pat. No. 4,981,903, U.S. Pat. No. 4,981,902, U.S. Pat. No. 5,468,477, and in U.S. Pat. No. 5,219,560 and EP 0 388 582;
  • liposoluble polymers carrying fluorinated groups belonging to one of the categories described in the text above, in particular FOMBLIN and those described U.S. Pat. No. 5,948,393 and copolymers of alkyl (meth)acrylate/
  • Polymers or copolymers resulting from polymerization or copolymerization of an ethylenic monomer which may be used include vinyl, acrylic and methacrylic copolymers.
  • the film-forming polymer is a block copolymer comprising at least one block constituted by styrene moieties or styrene derivatives (for example methylstyrene, chlorostyrene or chloromethylstyrene).
  • the copolymer comprising at least one styrene block may be a two- or three-block copolymer, or even a multi-block copolymer, or a star or radial copolymer.
  • the copolymer comprising at least one styrene block may further comprise, for example, an alkyl styrene block (AS), an ethylene/butylene block (EB), an ethylene/propylene block (EP), a butadiene block (B), an isoprene block (I), an acrylate block (A), a methacrylate block (MA) or an association of these blocks.
  • AS alkyl styrene block
  • EB ethylene/butylene block
  • EP ethylene/propylene block
  • B butadiene block
  • I isoprene block
  • A acrylate block
  • MA methacrylate block
  • the copolymer comprising at least one block constituted by styrene moieties or styrene derivatives may be a two- or three-block copolymer, in particular of the polystyrene/polyisoprene or polystyrene/poly butadiene type, such as those sold or manufactured under the trade name “LUVITOL HSB” by BASF and those of the polystyrene/copoly(ethylene-propylene) type or, alternatively, of the polystyrene/copoly(ethylene/butylene) type, such as those sold or manufactured under the trade name “KRATON” by SHELL CHEMICAL CO. or GELLED PERMETHYL 99A by PENRECO, may be used.
  • the polystyrene/polyisoprene or polystyrene/poly butadiene type such as those sold or manufactured under the trade name “LUVITOL HSB” by BASF and those of the
  • KRATON G1650 SEBS
  • KRATON G1651 SEBS
  • KRATON G1652 SEBS
  • KRATON G1657X SEBS
  • KRATON G1701X SEP
  • KRATON G1702X SEP
  • KRATON G1726X SEB
  • KRATON D-1101 SBS
  • KRATON D-1102 SBS
  • KRATON D-1107 SIS
  • GELLED PERMETHYL 99A-750 GELLED PERMETHYL 99A-753-58
  • GELLED PERMETHYL 99A-753-58 mixedture of star block copolymer and three-block polymer
  • GELLED PERMETHYL 99A-753-59 mixture of star block copolymer and three-block polymer
  • VERSAGEL 5970 and VERSAGEL 5960 from PENRECO mixture of star block copolymer and three-block polymer in isododecane
  • Styrene-methacrylate copolymers may also be used, such as polymers sold under the trade name OS 129880, OS 129881 and OS 84383 from LUBRIZOL (styrene-methacrylate copolymer).
  • the film-forming polymer is selected from copolymers of a vinyl ester (the vinyl group being directly bonded to the oxygen atom of the ester group and the vinyl ester having a saturated, linear or branched hydrocarbon radical containing 1 to 19 carbon atoms, bonded to the carbonyl of the ester group) and at least one other monomer which may be a vinyl ester (different from the vinyl ester already present), an ⁇ -olefin (containing 8 to 28 carbon atoms), an alkyl vinyl ether (the alkyl group of which contains 2 to 18 carbon atoms), or an allyl or methallyl ester (having a saturated, linear or branched hydrocarbon radical containing 1 to 19 carbon atoms bonded to the carbonyl of the ester group).
  • a vinyl ester the vinyl group being directly bonded to the oxygen atom of the ester group and the vinyl ester having a saturated, linear or branched hydrocarbon radical containing 1 to 19 carbon atoms, bonded to the carbonyl of
  • Said copolymers may be partially cross-linked using cross-linking agents which may be either vinyl in type or allyl or methallyl in type, such as tetra-allylocyethane, divinylbenzene, divinyloctanedioate, divinyldodecanedioate and divinyloctadecanedioate.
  • cross-linking agents may be either vinyl in type or allyl or methallyl in type, such as tetra-allylocyethane, divinylbenzene, divinyloctanedioate, divinyldodecanedioate and divinyloctadecanedioate.
  • copolymers examples include as follows: vinyl acetate/allyl stearate, vinyl acetate/vinyl laurate, vinyl acetate/vinyl stearate, vinyl acetate/octadecene, vinyl acetate/
  • liposoluble film-forming polymers that may be mentioned are liposoluble copolymers, in particular those resulting from copolymerizing vinyl esters containing 9 to 22 carbon atoms or alkyl acrylates or methacrylates, the alkyl radicals containing 10 to 20 carbon atoms.
  • Said liposoluble copolymers may be selected from copolymers of vinyl polystearate, vinyl polystearate cross-linked with divinyl benzene, diallyl ether or diallyl phthalate, copolymers of stearyl poly (meth)acrylate, vinyl polylaurate, lauryl poly (meth)acrylate, said poly (meth)acrylates possibly being cross-linked using ethylene glycol dimethacrylate or tetraethylene glycol.
  • the liposoluble copolymers defined above are known and have been described in FR-A-2 232 303; they may have a mass average molecular mass of 2000 to 500000, in particular 4000 to 200000.
  • liposoluble polymers which may be used in the context of the invention and that may be mentioned are polyalkylenes, copolymers of C 2 -C 20 alkenes, in particular polybutene.
  • liposoluble polymers which may be used in the context of the invention that may be mentioned are poly alkylenes, copolymers of C 2 -C 20 alkenes, in particular polybutene.
  • Amorphous and liposoluble polycondensates in particular containing no hydrogen interaction donor groups, in particular aliphatic polyesters containing C 4 -C 50 alkyl side chains or polyesters resulting from the condensation of fatty acid dimers, or even polyesters comprising a silicone segment in the form of a sequence, graft or terminal group, as defined in patent FR 0 113 920; and
  • Amorphous and liposoluble polysaccharides comprising alkyl side chains (ether or ester), in particular alkyl celluloses containing a saturated or unsaturated, linear or branched C 1 to C 8 alkyl radical such as ethyl cellulose or propyl cellulose.
  • the film-forming polymer may in particular be selected from cellulose polymers such as nitro cellulose, cellulose acetate, cellulose acetobutyrate, cellulose acetopropionate, ethyl cellulose, or from polyurethanes, acrylic polymers, vinyl polymers, polyvinylbutyrals, alkyd resins, resins derived from the condensation products of aldehydes such as arylsulfonamide formaldehyde resins, such as the toluene sulfonamide formaldehyde resin, and aryl-sulfonamide epoxy resins.
  • cellulose polymers such as nitro cellulose, cellulose acetate, cellulose acetobutyrate, cellulose acetopropionate, ethyl cellulose
  • polyurethanes acrylic polymers, vinyl polymers, polyvinylbutyrals, alkyd resins, resins derived from the condensation products of aldehydes such as arylsulfonamide formaldeh
  • the film-forming polymer used may in particular be nitrocellulose RS 1 ⁇ 8 sec; RS 1 ⁇ 4 sec.; 1 ⁇ 2 sec.; RS 5 sec.; RS 15 sec.; RS 35 sec.; RS 75 sec.; RS 150 sec; AS 1 ⁇ 4 sec.; AS 1 ⁇ 2 sec.; SS 1 ⁇ 4 sec.; SS 5 sec.; SS 5 sec., especially those sold by HERCULES; “KETJENTFLEX MS80” toluene sulfonamide formaldehyde resin from AKZO or “SANTOLITE MHP”, “SANTOLITE MS 80” from FACONNIER or “RESIMPOL 80” from PAN AMERICANA, the alkyd resin “BECKOSOL ODE 230-70-E” from DAINIPPON, the acrylic resin “ACRYLOID B66”, from ROHM & HAAS, and the polyurethane resin “TRIXENE PR 4127” from BAXENDEN.
  • Silicone resins generally soluble or swellable in silicone oils. These resins are cross-linked polyorganosiloxane polymers.
  • the silicone resin is selected from silsesquioxanes and siloxysilicates.
  • the silicone resin is selected from siloxysilicates such as trimethylsiloxysilicates represented by the following formula:
  • x and y may have values of 50 to 80
  • R represents an alkyl, such as a methyl or an alkyl with two or more carbon atoms.
  • the ratio of moieties M to moieties Q may, for example, be about 0.7:1.
  • the film-forming silicone resin may, for example, be selected from WACKER 803 and 804 resins available from WACKER SILICONE CORPORATION, and G.E. 1 170-002, available from GENERAL ELECTRIC.
  • the silicone resin is selected from silsesquioxanes comprising T moieties:
  • the silsesquioxane is selected from polymethyl silsesquioxanes which are silsesquioxanes in which R is a methyl group.
  • the polymethyl silsesquioxanes may, for example, comprise less than about 500 T moieties, preferably from about 50 to about 500 T moieties.
  • polymethylsilsesquioxanes are film-forming.
  • polymethylsilsesquioxanes such as TOSPEARLTM from TOSHIBA or KMP590 from SHIN-ETSU are highly insoluble in oils and thus are ineffective film-forming agents.
  • the molecular mass of those polymethylsilsesquioxanes is difficult to determine as they generally contain a thousand or more T moieties.
  • polymethylsilsesquioxane which may be used in the invention is BELSIL PMS MK (also known as MK resin), available from WACKER CHEMIE.
  • the polymethylsilsesquioxane is a polymer principally constituted by CH 3 SiO 3/2 (T moieties) repeat moieties and may also contain up to about 1% (by weight or in moles) of (CH 3 ) 2 SiO 2/2 (D moieties).
  • Suitable polymethylsilsesquioxanes for use in the present invention include KR-220L available from SHIN-ETSU.
  • the structure of KR-220L is essentially constituted by T silicone moieties (CH 3 SiO 3/2 ) with terminal Si—OH or silanol moieties; both are available from SHIN-ETSU.
  • the polymethylsilsesquioxane KR-242A has a structure having about 98% T methyl moieties and about 2% dimethyl D moieties, with Si—OH or silanol terminal moieties, and KR-251, which has a structure having about 88% T methyl moieties and about 12% dimethyl D moieties, with SiOH or silanol terminal moieties; both are available from SHIN-ETSU.
  • the silicone resin is soluble or dispersible in silicone oils or volatile organic liquids. In one implementation, the silicone resin is solid at 25° C.
  • the silicone resin may have a molecular mass of 1000 grams/mole to 10000 grams/mol. In another implementation, the resin is present in the composition in a quantity of 0.5% to 20% by weight relative to the total composition weight, preferably in a quantity of 1% to 10%.
  • the silicone resin is selected from combinations of M, D, T and Q moieties containing at least two moieties selected from M, D, T and Q satisfying the relationship R n SiO (4-n) , in which n has a value of 1.0 to 1.50. Certain resins of that type are described in U.S. Pat. No. 6,074,654.
  • the film-forming silicone resin is a copolymer in which at least one moiety of the copolymer is selected from the silicone moieties M, D, T and Q, and in which at least one additional moiety of the copolymer is selected from esters.
  • the film-forming silicone resin may, for example, be selected from diisostearoyltrimethylolpropane siloxysilicates such as SF 1 318 available from GE SILICONES.
  • said silicone polymers may belong to the following two categories:
  • polyorganosiloxanes comprising at least two groups capable of establishing hydrogen interactions, said two groups being located in the chain of the polymer;
  • polyorganosiloxanes comprising at least two groups capable of establishing hydrogen interactions, said two groups being located on the grafts or branches.
  • the polymers comprising two groups capable of establishing hydrogen interactions in the chain of the polymer may be polymers comprising at least one moiety having formula (XXII):
  • R 4 , R 5 , R 6 and R 7 which may be identical or different, represent a group selected from:
  • the Xs which may be identical or different, represent a linear or branched C 1 to C 30 alkylene diyl group which may contain one or more oxygen and/or nitrogen atoms in its chain;
  • Y is a saturated or unsaturated C 1 -C 50 divalent linear or branched alkylene, arylene, cycloalkylene, alkylarylene group, which may comprise one or more oxygen, sulfur and/or nitrogen atoms and/or carry one of the following atoms or groups of atoms as a substituent: fluorine, hydroxyl, C 3 to C 8 cycloalkyl, C 1 to C 40 alkyl, C 5 to C 10 aryl, phenyl optionally substituted with 1 to 3 C 1 to C 3 alkyl groups, C 1 to C 3 hydroxyalkyl or C 1 to C 6 aminoalkyl; or
  • the Gs which may be identical or different, represent divalent groups selected from:
  • R 9 represents a hydrogen atom or a linear or branched C 1 to C 20 alkyl group, provided that at least 50% of the radicals R 9 of the polymer represents a hydrogen atom and at least two of the G groups of the polymer are a group other than:
  • n is a whole number from 2 to 500, in particular 2 to 200
  • m is a whole number from 1 to 1000, in particular 1 to 700 and more preferably 6 to 200.
  • 80% of the R 4 , R 5 , R 6 and R 7 groups of the polymer are preferably selected from methyl, ethyl, phenyl and 3,3,3-trifluoropropyl groups.
  • Y may represent various divalent groups, optionally further comprising one or more free valencies in order to establish bonds with other moieties of the polymer or copolymer.
  • Y represents a group selected from:
  • C 1 to C 20 alkylene groups comprising one or more substituents selected from hydroxyl, C 3 to C 8 cycloalkane groups, C 1 to C 3 hydroxyalkyl and C 1 to C 6 alkylamines;
  • R 4 , R 5 , R 6 , R 7 , T and m are as defined above;
  • the polyorganosiloxanes of the second category may be polymers comprising at least one moiety having formula (XXVI):
  • R 6 represents the group with formula —X-G-R 12 in which X and G are as defined above for formula (XXII) and R 12 represents a hydrogen atom or a linear, branched or cyclic, saturated or unsaturated C 1 to C 50 hydrocarbon group optionally comprising one or more atoms selected from O, S and N in its chain, optionally substituted with one or more fluorine atoms and/or one or more hydroxyl groups, or a phenyl group optionally substituted with one or more C 1 to C 4 alkyl groups;
  • the polymer used may be a homopolymer, i.e. a polymer comprising several identical moieties, in particular moieties with formula (XXII) or formula (XXVI).
  • the copolymer may also be formed by several moieties with formula (XXVI) in which at least one of R 4 , R 6 , R 10 , R 11 , m 1 and m 2 is different in at least one of the moieties.
  • a copolymer comprising, in addition, at least one hydrocarbon moiety comprising two groups capable of establishing hydrogen bonds, selected from ester, amide, sulfonamide, carbamate, thiocarbamate, urea, urethane, thiourea, oxamido, guanidine and biguanidino groups and combinations thereof.
  • Said copolymers may be block copolymers, sequenced copolymers or graft copolymers.
  • composition of the invention may contain, as a film-forming agent, a linear sequenced ethylenic polymer below termed a “sequenced polymer” with a particular structure that is described below.
  • sequenced polymer means a polymer comprising at least 2 distinct sequences, preferably at least 3 distinct sequences.
  • the polymer is a polymer with a linear structure.
  • non-linear structured polymer is a polymer with a branched, star, graft or other structure.
  • the sequenced polymer is free of styrene.
  • polymer free of styrene means a polymer containing less than 10% by weight, relative to the total polymer weight, preferably less than 5% by weight, more preferably less than 2% by weight and still more preferably less than 1% by weight or contains no styrene-like monomer such as styrene, styrene derivatives such as methylstyrene, chlorostyrene or chloromethylstyrene.
  • the sequenced polymer comprises at least one first sequence and at least one second sequence having different glass transition temperatures (Tg), said first and second sequences being connected together by an intermediate sequence comprising at least one constituent monomer of the first sequence and at least one constituent monomer of the second sequence.
  • Tg glass transition temperatures
  • the intermediate sequence is a sequence comprising at least one constituent monomer of the first sequence and at least one constituent monomer of the second sequence of the polymer in order to “compatibilize” these sequences.
  • first and second sequences do not in any way dictate the order of said sequences (or blocks) in the structure of the sequenced polymer.
  • the first and second sequences and the sequenced polymer are incompatible with each other.
  • sequences which are incompatible with each other means that the mixture formed by the polymer corresponding to the first sequence and the polymer corresponding to the second sequence is not miscible in the organic liquid which is in the mass majority of the liquid oily phase at ambient temperature (25° C.) and at atmospheric pressure (10 5 Pa [Pascal]), for an amount of the polymer mixture of 5% by weight or more relative to the total weight of the mixture (polymers and solvent), it being understood that:
  • said polymers are present in the mixture in an amount such that the respective weight ratio is from 10/90 to 90/10;
  • each of the polymers corresponding to the first and second sequences has a (mass or number) average molecular mass equal to that of the sequenced polymer ⁇ 15%.
  • composition comprises a liquid oily phase comprising a mixture of organic liquids, assuming that two or more organic liquids are present in identical proportions by weight, said mixture of polymers is not miscible in at least one of them.
  • the organic liquid is the major organic liquid.
  • sequenced polymer does not include silicon atoms in its backbone.
  • backbone means the principal chain of the polymer, in contrast to the pendant side chains.
  • sequenced polymer is not soluble in water or in a mixture of water and linear or branched lower mono-alcohols containing 2 to 5 carbon atoms such as ethanol, isopropanol or n-propanol, without modifying the pH, at an active material content of at least 1% by weight, at ambient temperature (25° C.).
  • sequenced polymer is not an elastomer.
  • non-elastomeric polymer means a polymer which, when it is subjected to a force intended to extend it (for example by 30% relative to its initial length), does not return to a length substantially identical to its initial length when the force ceases.
  • non-elastomeric polymer means a polymer with an instantaneous recovery, R i , of ⁇ 50% and a delayed recovery, R 2h , of ⁇ 70% after undergoing an extension of 30%.
  • R i is ⁇ 30% and R 2h is ⁇ 50%.
  • non-elastomeric character of the polymer is determined using the following protocol:
  • a film of polymer is prepared by pouring a solution of polymer into a Teflon lined matrix then drying for 7 days under a controlled atmosphere at 23 ⁇ 5° C. and 50 ⁇ 10% relative humidity.
  • a film about 100 ⁇ m [micrometer] thick is obtained from which rectangular specimens are cut (for example using a punch) with a width of 15 mm [millimeter] and a length of 80 mm.
  • a tension is applied to said specimen using a Zwick apparatus, applying the temperature and humidity conditions used for drying.
  • the specimens are drawn at a rate of 50 mm/min and the distance between the jaws is 50 mm, corresponding to the initial length (I 0 ) of the specimen.
  • the instantaneous recovery R i is determined as follows:
  • the residual lengthening of the specimen is measured as a percentage ( ⁇ 2h ), 2 hours after returning to zero stress.
  • a polymer in one implementation of the invention has an instantaneous recovery R i of 10% and a delayed recovery R 2h of 30%.
  • the sequenced polymer has a polydispersity I of more than 2, for example 2 to 9, in particular 2.5 or more, for example from 2.5 to 8, and more particularly 2.8 or more, especially 2.8 to 6.
  • the polydispersity index I of the sequenced polymer is equal to the ratio of the mass average molecular mass Mw to the number average molecular mass Mn.
  • the mass average molecular mass (Mw) and number average molecular mass (Mn) are determined by gel permeation liquid chromatography (THF solvent, calibration curve established with linear polystyrene specimens, refractometric detector).
  • the mass average molecular weight (Mw) of the sequenced polymer is in particular 300000 or less, for example 35000 to 200000, more particularly 45000 to 150000.
  • the mass average molecular mass (Mn) of the sequenced polymer is, in particular, 70000 or less, for example 10000 to 60000, more particularly 12000 to 50000.
  • Each sequence or block of the sequenced polymer is derived from a type of monomer or several different types of monomers.
  • each sequence may be constituted by a homopolymer or a copolymer; said copolymer constituting the sequence which may in turn be random or alternating.
  • the intermediate sequence comprising at least one constituent monomer of the first sequence and at least one constituent monomer of the second sequence of the sequenced polymer is a random polymer.
  • the intermediate sequence is essentially derived from the constituent monomers of the first sequence and the second sequence.
  • the term “essentially” means at least 85%, in particular at least 90%, more particularly 95% and more particularly 100%.
  • the intermediate sequence has a glass transition temperature Tg in the range between the glass transition temperatures of the first and second sequences.
  • the glass transition temperatures indicated for the first and second sequences may be the theoretical Tgs determined from the theoretical Tgs of the constituents monomers of each of the sequences, which can be found in a reference manual such as the Polymer Handbook, 3 rd edition, John Wiley, using the following relationship known as Fox's Law:
  • ⁇ acute over ( ⁇ ) ⁇ i being the mass fraction of monomer i in the sequence under consideration and Tg i being the glass transition temperature of the homopolymer of monomer i.
  • Tgs indicated for the first and second sequences in the present application are theoretical Tgs.
  • the difference between the glass transition temperatures of the first and second sequences is generally more than 10° C., in particular more than 20° C., and more particularly more than 30° C.
  • the first sequence of the sequenced polymer may be selected from:
  • the second sequence is selected from a category a)
  • the term “between . . . and . . . ” as used in the present invention means a range of values from which the limits mentioned are excluded, and “ . . . to . . . ” and “from . . . to . . . ” means a range of values the limits of which are included.
  • the sequence with a Tg of 40° C. or more has, for example, a Tg of 40° C. to 150° C., in particular 50° C. or more, for example from 50° C. to 120° C., in particular 60° C. or more, for example from 60° C. to 120° C.
  • the sequence with a Tg of 40° C. or more may be a homopolymer or a copolymer.
  • This first sequence is a homopolymer, it is derived from monomers that are such that the homopolymers prepared from said monomers have glass transition temperatures or 40° C. or more.
  • This first sequence may be a homopolymer constituted by a single type of monomer (where the Tg of the corresponding homopolymer is 40° C. or more).
  • the first sequence when the first sequence is a copolymer, it may be completely or partially derived from one or more monomers, the nature of which and the concentration of which are selected so that the Tg of the resulting copolymer is 40° C. or more.
  • the copolymer may comprise:
  • Monomers the homopolymers of which have a glass transition temperature of 40° C. or more are preferably selected from the following monomers, also termed principal monomers:
  • R 1 represents an unsubstituted linear or branched alkyl group containing 1 to 4 carbon atoms, such as a methyl, ethyl, propyl or isobutyl group or R 1 represents a C 4 to C 12 cycloalkyl group;
  • R 2 represents a C 4 to C 12 cycloalkyl group such as isobornyl acrylate or a tertiobutyl group;
  • Examples of monomers that may be mentioned are N-butylacrylamide, N-t-butylacrylamide, N-isopropylacrylamide, N,N-dimethylacrylamide and N,N-dibutylacrylamide.
  • Particularly advantageous principal monomers are methyl methacrylate, isobutyl (meth)acrylate, isobornyl (meth)acrylate and mixtures thereof.
  • the sequence having a Tg of 20° C. or less has, for example, a Tg of ⁇ 100° C. to 20° C., preferably 15° C. or less, especially from ⁇ 80° C. to 15° C. and more preferably 10° C. or less, for example from ⁇ 50° C. to 0° C.
  • the sequence with a Tg of 20° C. or less may be a homopolymer or a copolymer.
  • sequence is a homopolymer, it is derived from monomers, which are such that homopolymers prepared from said monomers have glass transition temperatures of 20° C. or less.
  • Said second sequence may be a homopolymer constituted by a single type of monomer (wherein the Tg of the corresponding homopolymer is 20° C. or less).
  • the sequence with a Tg of 20° C. or less is a copolymer, it may be wholly or partially derived from one or more monomers, the nature and concentration of which are selected so that the Tg of the resulting copolymer is 20° C. or less.
  • it may comprise:
  • sequence with a Tg of 20° C. or less is a homopolymer.
  • Monomers the homopolymer of which has a Tg of 20° C. or less are preferably selected from the following monomers or principal monomers:
  • R 3 representing an unsubstituted linear or branched C 1 to C 12 alkyl group in which one or more heteroatoms selected from O, N and S are interposed;
  • R 4 represents an unsubstituted linear or branched alkyl C 6 to C 12 group in which one or more heteroatoms selected from O, N and S are optionally interposed;
  • R 5 represents a linear or branched C 4 to C 12 alkyl group
  • Particularly preferred principal monomers for the sequence with a Tg of 20° C. or less are alkyl acrylates the alkyl chain of which contains 1 to 10 carbon atoms, such as methyl acrylate, isobutyl acrylate, 2-ethylhexyl acrylate and mixtures thereof.
  • the sequence with a Tg between 20° C. and 40° C. may be a homopolymer or a copolymer.
  • said sequence is a homopolymer, it is derived from monomers (or principal monomers) which are such that homopolymers prepared from said monomers have glass transition temperatures between 20° C. and 40° C.
  • Said first sequence may be a homopolymer, constituted by a single type of monomer (wherein the Tg of the corresponding homopolymer is from 20° C. to 40° C.).
  • Monomers with a homopolymer with a glass transition temperature between 20° C. and 40° C. are preferably selected from n-butyl methacrylate, cyclodecyl acrylate, neopentyl acrylate, isodecylacrylamide and mixtures thereof.
  • sequence with a Tg between 20° C. and 40° C. is a copolymer, it is completely or partially derived from one or more monomers (or a principal monomer) the nature and concentration of which are selected so that the Tg of the resulting copolymer is between 20° C. and 40° C.
  • sequence with a Tg between 20° C. and 40° C. is a copolymer wholly or partially derived from:
  • Said principal monomers are, for example, selected from methyl methacrylate, isobornyl acrylate and methacrylate, butyl acrylate, 2-ethylhexyl acrylate and mixtures thereof.
  • the proportion of the second sequence with a Tg of 20° C. or less is from 10% to 85% by weight of polymer, preferably 20% to 70% and more preferably 20% to 50%.
  • Each sequence may nevertheless contain a minor proportion of at least one constituent monomer of the other sequence.
  • the first sequence may contain at least one constituent monomer of the second sequence, and conversely.
  • each of the first and/or second sequences of the sequenced polymer may comprise one or more monomers termed additional monomers, which differ from the principal monomers mentioned above.
  • This additional monomer is, for example, selected from:
  • R 6 represents a linear or branched alkyl group containing 1 to 4 carbon atoms, such as a methyl, ethyl, propyl or isobutyl group, said alkyl group being substituted with one or more substituents selected from hydroxyl groups (such as 2-hydroxypropyl methacrylate, 2-hydroxyethyl methacrylate) and halogen atoms (Cl, Br, I, F), such as trifluoroethyl methacrylate;
  • R 9 represents a linear or branched C 6 to C 12 alkyl group, in which one or more heteroatoms selected from O, N and S are optionally interposed, said alkyl group being substituted with one or more substituents selected from hydroxyl groups and halogen atoms (Cl, Br, I, F);
  • R 10 represents a linear or branched C 1 to C 12 alkyl group substituted with one or more substituents selected from hydroxyl groups and halogen atoms (Cl, Br, I and F), such as 2-hydroxypropyl acrylate and 2-hydroxyethyl acrylate, or R 10 represents a C 1 to C 12 —O—POE (polyoxyethylene) with 5 to 30 repetitions of the oxyethylene moiety, for example methoxy-POE, or R 8 represents a polyoxyethylene group containing 5 to 30 ethylene oxide moieties;
  • Particularly preferred additional monomers are acrylic acid, methacrylic acid, trifluoroethyl methacrylate and mixtures thereof.
  • the sequenced polymer is a non-silicone polymer, i.e. a polymer free of silicon atoms.
  • Said additional monomers generally represent a quantity of 30% by weight or less, for example 1% to 30% by weight, preferably 5% to 20% by weight, more preferably 7% to 15% by weight of the total weight of the first and/or second sequences.
  • each of the first and second sequences comprises at least one monomer selected from (meth)acrylic acid esters, and optionally at least one monomer selected from (meth)acrylic acid and mixtures thereof.
  • each of the first and second sequences of the sequenced polymer is wholly derived from at least one monomer selected from acrylic acid, (meth)acrylate acid esters, and possibly at least one monomer selected from (meth)acrylate acid, and mixtures thereof.
  • the sequenced polymer may be obtained by radical polymerization in solution using the following preparation method:
  • polymerization solvent means a solvent or a mixture of solvents.
  • the polymerization solvent may be selected from ethyl acetate, butyl acetate, alcohols such as isopropanol or ethanol, aliphatic alkanes such as isododecane, and mixtures thereof.
  • the polymerization solvent is a mixture of butyl acetate and isopropanol or isododecane.
  • the sequenced polymer comprises a first sequence with a Tg of 40° C. as described above in a) and a second sequence with a Tg of 20° C. or less, as described above at b).
  • the first sequence with a Tg of 40° C. or more is a copolymer derived from monomers which are such that the homopolymer prepared from said monomers has a glass transition temperature of 40° C. or more, such as the monomers described above.
  • the second sequence with a Tg of 20° C. or less is a homopolymer derived from monomers which are such that the homopolymer prepared from said monomers has a glass transition temperature of 20° C. or less, such as the monomers described above.
  • the proportion of the sequence with a Tg of 40° C. or more is from 20% to 90% by weight of polymer, preferably 30% to 80% and more preferably 50% to 70%.
  • the proportion of the sequence with a Tg of 20° C. or less is from 5% to 75% by weight of polymer, preferably 15% to 50%, and more preferably 25% to 45%.
  • sequenced polymer may comprise:
  • the sequenced polymer comprises a first sequence having a glass transition temperature (Tg) between 20° C. and 40° C., as described in c), and a second sequence with a glass transition temperature of 20° C. or less, as described above in b) or a glass transition temperature of 40° C. or more, as described above.
  • Tg glass transition temperature
  • the proportion of the first sequence with a Tg between 20° C. and 40° C. is from 10% to 85% by weight of polymer, in particular 30% to 80% by weight and more preferably 50% to 70%.
  • the second sequence is a sequence having a Tg of 40° C. or more, in particular it is present in a proportion of 10% to 85% by weight of polymer, in particular 20% to 70% and more particularly 30% to 70%.
  • the second sequence is a sequence with a Tg of 20° C. or less, in particular it is present in a proportion of 10% to 85% by weight of polymer, in particular 20% to 70% and more particularly 20% to 50%.
  • the first sequence with a Tg between 20° C. and 40° C. is a copolymer derived from monomers which are such that the corresponding homopolymer has a Tg of 40° C. or more, and monomers which are such that the corresponding homopolymer has a Tg of 20° C. or less.
  • the second sequence with a Tg of 20° C. or less or with a Tg of 40° C. or more is a homopolymer.
  • sequenced polymer comprises:
  • sequenced polymer may comprise:
  • sequenced polymer may comprise:
  • the film-forming polymer may be a solid which is insoluble in the oily phase of the composition at ambient temperature, for example about 25° C.
  • the polymer is also insoluble in the oily phase at its softening temperature, in contrast to a wax of polymeric origin which is soluble in the liquid organic phase (or oily phase) at its melting temperature.
  • the polymer is not a wax.
  • composition of the invention advantageously comprises at least one stable dispersion of essentially spherical polymer particles of one or more polymers in a physiologically acceptable oily phase.
  • Said dispersions may in particular be in the form of nano particles of polymers in stable dispersion in said liquid organic phase.
  • the nano particles preferably have a mean size in the range 5 nm to 800 nm, and preferably in the range 50 nm to 500 nm. However, it is possible to obtain polymer particle sizes of up to 1 ⁇ m.
  • the polymer particles in dispersion are insoluble in hydrosoluble alcohols such as ethanol.
  • the polymers in dispersion which can be used in the composition of the invention preferably have a molecular weight of the order of 2000 to 10000000 g/mol, and a Tg of ⁇ 100° C. to 300° C., preferably ⁇ 50° C. to 100° C., more preferably ⁇ 10° C. to 50° C.
  • polymers which can form films preferably with a low Tg equal to or lower than the temperature of skin, and in particular 40° C. or less.
  • film-forming polymers examples include acrylic or vinyl radical copolymers or homopolymers, preferably with a Tg of 40° C. or less and in particular from ⁇ 10° C. to 30° C., used alone or as a mixture.
  • radical type polymer means a polymer obtained by polymerizing unsaturated monomers, in particular with ethylenically unsaturated bonds, each monomer being capable of self-polymerizing (in contrast to polycondensates).
  • the radical type polymers may in particular be polymers or copolymers, vinyl, in particular acrylic polymers.
  • the acrylic polymers may result from polymerizing monomers with an ethylenically unsaturated bond containing at least one acid group and/or esters of said acid monomers and/or amides of said acids.
  • Monomers carrying an acid group which may be used include ⁇ , ⁇ -ethylenically unsaturated carboxylic acids such as acrylic acid, methacrylic acid, crotonic acid, maleic acid, and itaconic acid.
  • (meth)acrylic acid, and crotonic acid may be used, more particularly (meth)acrylic acid.
  • esters of acid monomers are advantageously selected from esters of (meth)acrylic acid (also known as (meth)acrylates), such as alkyl (meth)acrylates, in particular of C 1 -C 20 alkyl, preferably C 1 -C 8 , aryl (meth)acrylates, in particular of C 6 -C 10 aryl, and hydroxyalkyl (meth)acrylates, in particular C 2 -C 6 hydroxyalkyl.
  • Alkyl (meth)acrylates which may be mentioned include methyl, ethyl, butyl, isobutyl, 2-ethylhexyl, and lauryl methacrylate.
  • Hydroxyalkyl (meth)acrylates which may be mentioned include hydroxyethyl (meth)acrylate, and 2-hydroxypropyl (meth)acrylate.
  • Aryl (meth)acrylates which may be mentioned include benzyl acrylate and phenyl acrylate.
  • (Meth)acrylic acid esters that are particularly suited to cosmetic compositions of the invention are alkyl (meth)acrylates.
  • radical polymers which may be used are (meth)acrylate acid and alkyl (meth)acrylate copolymers, in particular C 1 -C 4 alkyl (meth)acrylate. More particularly, methyl acrylates optionally copolymerized with acrylic acid may be used.
  • Amides of acid monomers which may be mentioned are (meth)acrylamides, especially N-alkyl (meth)acrylamides, in particular C 2 -C 12 alkyl (meth)acrylamides such as N-ethyl acrylamide, N-t-butyl acrylamide and N-t-octyl acrylamide; N-dialkyl C 1 -C 4 alkyl (meth)acrylamides.
  • the acrylic polymers may also result from polymerizing monomers with an ethylenically unsaturated bond containing at least one amine group in free or partially or totally neutralized form, or indeed partially or totally quaternized.
  • monomers may be dimethylaminoethyl (meth)acrylate, dimethylaminoethyl methacrylamide, vinylamine, vinylpyridine, and/or diallyldimethylammonium chloride.
  • the vinyl polymers may also result from homopolymerizing or copolymerizing at least one monomer selected from vinyl esters and styrene monomers.
  • said monomers may be polymerized with acid monomers and/or their esters and/or their amides, such as those mentioned above.
  • vinyl esters which may be mentioned are vinyl acetate, vinyl propionate, vinyl neodecanoate, vinyl pivalate, vinyl benzoate, and vinyl t-butyl benzoate.
  • An example of a styrene monomer which may be mentioned is alpha-methyl styrene.
  • the vinyl polymer may be cross-linked using one or more di-functional monomers, in particular having at least two ethylenically unsaturated bonds, such as ethylene glycol dimethacrylate or diallyl phthalate.
  • the polymers in dispersion of the invention may be selected from the following polymers or copolymers: polyurethanes, acrylic polyurethanes, polyureas, polyurea-polyurethanes, polyester-polyurethanes, polyether-polyurethanes, polyesters, polyester amides, alkyds; acrylic and/or vinyl polymers or copolymers; acrylic-silicone copolymers; polyacrylamides; silicone polymers such as polyurethanes or silicone acrylics, fluorinated polymers, and mixtures thereof.
  • the polymer(s) in dispersion in the oily phase may represent 5% to 40% by weight of the dry matter of the composition, preferably 5% to 35%, better 8% to 30%.
  • the polymer particles in dispersion are surface stabilized by a stabilizer which is solid at ambient temperature.
  • the dry matter content in the dispersion then represents the total quantity of polymer+stabilizer, given that the quantity of polymer cannot be less than 5%.
  • the polymer particles are surface stabilized using a stabilizer which may be a sequenced polymer, a graft polymer and/or a random polymer, used alone or as a mixture.
  • Stabilization may be achieved by any known means, in particular by direct addition of stabilizing polymer during polymerization.
  • the stabilizer may also be present in the mixture before polymerizing the polymer. However, it is also possible to add it continuously, especially when the monomers are also added continuously.
  • the processing solvent is selected so that at least a portion of the grafts or sequences of said polymer-stabilizer is soluble in said solvent, the other portion of the grafts or sequences not being soluble therein.
  • the polymer-stabilizer used during polymerization must be soluble or dispersible in the processing solvent. Further, it is preferable to select a stabilizer the insoluble sequences or grafts of which have a certain affinity for the polymer formed during polymerization.
  • Graft polymers that may be mentioned include silicone polymers grafted with a hydrocarbon chain; hydrocarbon polymers grafted with a silicone chain.
  • graft or sequenced block copolymers including at least one block of the polyorganosiloxane type and at least one block of a radical polymer may be used, such as graft copolymers of the acrylic/silicone type which may be used when the non aqueous medium is a silicone.
  • graft or sequenced block copolymers comprising at least one block of the polyorganosiloxane type and at least one polyether.
  • the polyorganosiloxane block may in particular be a polydimethylsiloxane or a polyalkyl(C 2 -C 18 )methylsiloxane; the polyether block may be a C 2 -C 18 polyalkylene, in particular polyoxyethylene and/or polyoxypropylene.
  • copolyol dimethicones or (C 2 -C 18 ) alkyl dimethicone copolyols such as those sold under the trade name “DOW CORNING 3225C” by DOW CORNING, or lauryl methicones such as those sold by “DOW CORNING Q2-5200 by “DOW CORNING”.
  • Graft or sequenced block copolymers that may be mentioned include those comprising at least one block resulting from polymerizing at least one ethylenic monomer with one or more ethylenically unsaturated bonds which may be conjugated, such as ethylene or dienes such as butadiene or isoprene, and at least one block of a vinyl polymer and preferably styrene.
  • the ethylenic monomer comprises several ethylenically unsaturated bonds which may be conjugated
  • the residual ethylenically unsaturated bonds after polymerization are generally hydrogenated.
  • polystyrene/polyisoprene SI
  • polystyrene/polybutadiene SEP
  • KRATON polystyrene/copoly(ethylene-propylene)
  • SEB polystyrene/copoly(ethylene-butylene)
  • KRATON G1650 SEBS
  • KRATON G1651 SEBS
  • KRATON G1652 SEBS
  • KRATON G1657X SEBS
  • KRATON G1701X SEP
  • KRATON G1702X SEP
  • KRATON G1726X SEB
  • KRATON D-1101 SBS
  • KRATON D-1102 SBS
  • KRATON D-1107 SIS
  • the polymers are generally termed copolymers of hydrogenated or non hydrogenated dienes.
  • GELLED PERMETHYL 99A-750, 99A-753-59 and 99A-753-58 mixture of three block and star polymer
  • VERSAGEL 5960 from PENRECO (three-block+star polymer)
  • OS129880, OS129881 and OS84383 from LUBRIZOL (styrene/methacrylate copolymer).
  • Graft or sequenced block copolymers comprising at least one block resulting from polymerizing at least one ethylenic monomer with one or more ethylenically unsaturated bonds and at least one block of an acrylic polymer that may be mentioned are two- or three-block poly(methyl methacrylate)/polyisobutene copolymers or graft copolymers with a poly(methyl methacrylate) backbone with polyisobutylene grafts.
  • Graft or sequenced block copolymers comprising at least one block resulting from polymerizing at least one ethylenic monomer with one or more ethylenically unsaturated bonds and at least one block of a polyether such as a C 2 -C 18 polyalkylene (in particular polyethylene and/or polyoxypropylene) that may be mentioned are two- or three-block polyoxyethylene/polybutadiene or polyoxyethylene/polyisobutylene copolymers.
  • a polyether such as a C 2 -C 18 polyalkylene (in particular polyethylene and/or polyoxypropylene) that may be mentioned are two- or three-block polyoxyethylene/polybutadiene or polyoxyethylene/polyisobutylene copolymers.
  • the stabilizer When a random polymer is used as the stabilizer, it is selected so that it has a sufficient quantity of groups to render it soluble in the envisaged processing solvent.
  • copolymers based on alkyl acrylates or methacrylates derived from C 1 -C 4 alcohols and alkyl acrylates or methacrylates derived from C 8 -C 30 alcohols.
  • stearyl methacrylate/methyl methacrylate copolymer may be mentioned.
  • the polymer processing solvent is apolar
  • a graft polymer or a sequenced polymer in order to have a better interfacial activity.
  • Sequences or grafts which are insoluble in the processing solvent produce a more voluminous coating on the particle surface.
  • the stabilizing agent is preferably selected from the group constituted by graft or sequenced block copolymers comprising at least one polyorganosiloxane type block and at least one radical polymer block or polyether or polyester block, such as polyoxypropylene and/or oxyethylene blocks.
  • the stabilizer agent is preferably selected from the group constituted by:
  • graft or sequenced block copolymers comprising at least one polyorganosiloxane type block and at least one block of a radical polymer or a polyether or a polyester;
  • graft or sequenced block copolymers comprising at least one block resulting from polymerizing at least one ethylenically unsaturated monomer with conjugated ethylenically unsaturated bonds;
  • two block polymers are used as the stabilizer agent.
  • the film-forming polymer which is liposoluble or dispersed in an oily phase may also be used in a quantity of 0.01% to 20% (active substance) relative to the total composition weight, such as 1% to 10%, as appropriate.
  • the film-forming polymer may be selected from aqueous dispersions of polymer particles when the composition of the invention comprises an aqueous phase.
  • aqueous dispersion comprising one or more film-forming polymers
  • the aqueous dispersion comprising one or more film-forming polymers may be prepared by the skilled person on the basis of general knowledge, in particular by emulsion polymerization or by dispersing the polymer formed.
  • Film-forming polymers which may be used in the composition of the present invention that may be mentioned include synthetic polymers of the polycondensate or radical type, polymers of natural origin, and mixtures thereof.
  • Polycondensates that may also be mentioned are anionic, cationic, non ionic or amphoteric polyurethanes, polyurethane-acrylics, polyurethane-polyvinylpyrrolidones, polyester-polyurethanes, polyether-polyurethanes, polyureas, polyurea/polyurethanes, and mixtures thereof.
  • the polyurethanes may, for example, be a polyurethane copolymer, which may be aliphatic, cycloaliphatic or aromatic, a polyurea/polyurethane copolymer, or a polyurea copolymer, comprising used alone or as a mixture:
  • the polyurethanes as defined in the invention may also be obtained from polyesters, which may or may not be branched, or from alkyds comprising mobile hydrogens which are modified by means of a polyaddition with a diisocyanate and an organic bifunctional co-reagent compound (for example dihydro, diamino or hydroxy-amino), comprising in addition either a carboxylate group or carboxylic acid, or a sulfonate group or sulfonic acid, or even a neutralizable tertiary amine group or a quaternary ammonium group.
  • polyesters which may or may not be branched, or from alkyds comprising mobile hydrogens which are modified by means of a polyaddition with a diisocyanate and an organic bifunctional co-reagent compound (for example dihydro, diamino or hydroxy-amino), comprising in addition either a carboxylate group or carboxylic acid, or a sulfonate group or
  • the polyesters may be obtained in known manner by means of polycondensation of aliphatic or aromatic dibasic acids Malawi aliphatic or aromatic diols or with polyols.
  • Succinic acid, glutaric acid, adipic acid, pimelic acid, suberic acid, or sebacic acid may be used as aliphatic dibasic acids.
  • Terephthalic acid or isophthalic acid, or even a derivative such as phthalic anhydride may be used as aromatic dibasic acids.
  • Glycol ethylene, glycol propylene, glycol diethylene, glycol neopentyl, cyclohexanedimethanol, and 4,4-N-(1-methylpropylidene)bisphenol may be used as aliphatic diols.
  • Glycerol, pentaerythritol, sorbitol, and trimethylolpropane may be used as polyols.
  • the polyesteramides may be obtained in a manner which is analogous to that used for polyesters, by means of polycondensation of dibasic acids with diamines or aminoalcohols.
  • Ethylenediamine, hexamethylnediamine and meta- or para-phenylenediamine may be used as diamine.
  • Monoethanolamine may be used as an aminoalcohol.
  • polyesters with a fatty chain may be obtained using diols with a fatty chain during polycondensation.
  • Epoxy ester resins may be obtained by polycondensating fatty acids with a condensate at the ⁇ , ⁇ -diepoxy ends.
  • radical polymers may be acrylic and/or vinyl polymers or copolymers.
  • Polymers with an anionic radical are preferred.
  • monomers carrying an anionic group which may be used during radical polymerization that may be mentioned are acrylic acid, methacrylic acid, crotonic acid, maleic anhydride and 2-acrylamido-2-methylpropanesulfonic acid.
  • the acrylic polymers may result from copolymerizing monomers selected from esters and/or amides of acrylic acid or methacrylic acid.
  • ester type monomers that may be mentioned are methyl methacrylate, ethyl methacrylate, butyl methacrylate, isobutyl methacrylate, 2-ethylhexyl methacrylate and lauryl methacrylate.
  • amide type monomers that may be mentioned are N-t-butylacrylamide and N-t-octylacrylamide.
  • acrylic polymers obtained by copolymerizing monomers with an ethylenically unsaturated bond containing hydrophilic groups are used, such as hydroxyethyl acrylate, 2-hydroxypropyl acrylate, hydroxyethyl methacrylate and 2-hydroxypropyl methacrylate.
  • Vinyl polymers may result from homo polymerization or copolymerization of monomers selected from vinyl esters, styrene or butadiene.
  • vinyl esters that may be mentioned are vinyl acetate, vinyl neodecanoate, vinyl pivalate, vinyl benzoate and vinyl t-butylbenzoate.
  • polymers resulting from radical polymerization of one or more radical monomers within and/or partially on the surface of pre-existing particles of at least one polymer selected from the group constituted by polyurethanes, polyureas, polyesters, polyester amides and/or alkyds. Said polymers are generally termed “hybrid polymers”.
  • the dry matter content of said aqueous dispersion may be of the order of 3% to 60% by weight, preferably 10% to 50%.
  • the particle size of the polymers in aqueous dispersion may be in the range 10 nm to 500 nm, and it is preferably in the range 20 nm to 150 nm, allowing a film with a substantial gloss to be obtained. However, it is possible to employ particle sizes of up to one micron.
  • aqueous dispersions of film-forming polymers which may be used are acrylic dispersions sold under the trade names “NEOCRYL XK-90®”, “NEOCRYL A-1070 T, NEOCRYL A-1090®”, “NEOCRYL BT-62®”, “NEOCRYL A-1079®” and “NEOCRYL A-523®” from AVECIA-NEORESINS, “DOW LATEX 432®” from DOW CHEMICALS, “DAITOSOL 5000 AD®” or “DAITOSOL 5000 SJ” from DAITO KASEY KOGYO; “SYNTRAN 5760” from INTERPOLYMER or aqueous dispersions of polyurethane sold under the trade name “NEOREZ R-981®” and “NEOREZ R-974® from AVECIA-NEORESINS, “AVALURE UR-405®”, “AVALURE UR-410®”, “AVALURE UR-425®”, “AVALURE UR-450®”, S
  • the film-forming polymer may be a hydrosoluble polymer.
  • the hydrosoluble polymer is thus dissolved in the aqueous phase of the composition.
  • hydrosoluble film-forming polymers examples include the following cationic polymers:
  • Acrylic polymers or copolymers such as poly acrylates or poly methacrylates; copolymers of category (1) may further contain one or more moieties deriving from co-monomers which may be selected from the acrylamide, methacrylamide, diacetoneacrylamides, acrylamides and methacrylamides substituted on the nitrogen by lower alkyls, acrylic or methacrylic acids or esters thereof, vinyllactames such as vinylpyrrolidone or vinylcaprolactame, and vinyl esters.
  • copolymers of family (1) that may be mentioned include:
  • cationic cellulose derivatives such as copolymers of cellulose or cellulose derivatives grafted with a hydrosoluble monomer comprising a quaternary ammonium, described in particular in U.S. Pat. No. 4,131,576 such as hydroalkyl celluloses, such as hydroxymethyl, hydroxyethyl or hydroxypropyl celluloses, in particular grafted with a methacryloyloxyethyltrimethylammonium, methacrylamidopropyltrimethylammonium or dimethyldiallylammonium salt.
  • Particular commercial products corresponding to that definition are products sold under the trade name “CELQUAT L 200” and “CELQUAT H 100” by NATIONAL STARCH COMPANY.
  • Hydrosoluble film-forming polymers that may be mentioned include the following amphoteric polymers:
  • esters containing primary, secondary, tertiary and quaternary amine substituents or acrylic and methacrylic acids, and the product of quaternizing dimethylaminoethyl methacrylate with dimethyl or diethyl sulfate;
  • polymers derived from N-carboxyalkylation of chitosan such as N-carboxymethyl chitosan or N-carboxybutyl chitosan sold under the trade name “EVALSAN” by JAN DEKKER;
  • Said copolymers may also comprise other vinyl co-monomers such as vinylcaprolactame.
  • the hydrosoluble film-forming polymers are preferably selected from the group constituted by:
  • coalescence agent to the polymer system, which agent is selected from known coalescence agents.
  • Said polymers may be liposoluble, lipodispersible, hydrosoluble or dispersible in an aqueous medium, if appropriate.
  • Polymers with a non-silicone organic backbone grafted with monomers containing a polysiloxane are constituted by a principal organic chain formed by organic monomers comprising no silicone, onto which we graft, inside said chain and optionally on at least one of the ends thereof, at least one polysiloxane macromer.
  • polysiloxane macromer designates, as is generally accepted, means any monomer containing a polymer chain of the polysiloxane type in its structure.
  • the non-silicone organic monomers constituting the principal chain of the graft silicone polymer may be selected from monomers with an ethylenically unsaturated bond which may be polymerized by the radical method, monomers polymerizable by polycondensation such as those forming polyamides, polyesters, polyurethanes, monomers with an opening cycle such as those of the oxazoline or caprolactone type.
  • Polymers having a non-silicone organic backbone grafted by monomers containing a polysiloxane of the present invention may be obtained using any method which is known to the skilled person, in particular by reaction between (i) a starting polysiloxane macromer correctly functionalized on the polysiloxane chain and (ii) one or more non-silicone organic compounds, themselves correctly functionalized by a function which is capable of reacting with the functional group or groups carried by said silicone, forming a covalent bond; a classic example of such a reaction is the radical reaction between a vinyl group carried at one end of the silicone with a double bond of a monomer with an ethylenically unsaturated bond of the principal chain.
  • Polymers having a non-silicone organic backbone grafted with monomers containing a polysiloxane of the invention are preferably selected from those described in U.S. Pat. No. 4,693,935, U.S. Pat. No. 4,728,571 and U.S. Pat. No. 4,972,037 and patent applications EP-A-0 412 704, EP-A-0 412 707, EP-A-0 640 105 and WO 95/00578.
  • copolymers obtained by radical polymerization starting from monomers with an ethyleneically unsaturated bond and monomers having a terminal vinyl group or copolymers obtained by reacting a polyolefin containing functionalized groups and a polysiloxane macromer having a terminal function which reacts with said functionalized groups.
  • a particular family of graft silicone polymers which is suitable for carrying out the present invention is constituted by graft silicone polymers containing:
  • Said polymers have a number average molecular mass from 10000 to 2000000 and preferably a glass transition temperature Tg or a crystal melting temperature Tm of at least ⁇ 20° C.
  • lipophilic monomers (A) examples include esters of C 1 -C 18 alcohol and acrylic or methacrylic acid; esters of C 12 -C 30 alcohol and methacrylic acid; styrene; polystyrene macromers; vinyl acetate; vinyl propionate; alpha-methylstyrene; tertio-butylstyrene; butadiene; cyclohexadiene; ethylene; propylene; vinyltoluene, esters of acrylic or methacrylic acid and 1,1-dihydroperfluoroalkanols or homologues thereof; esters of acrylic or methacrylic acid and omega-hydrofluoroalkanols; esters of acrylic or methacrylic acid and fluoroalkylsulfonamidoalcohols; esters of acrylic or methacrylic acid and fluoroalkylalcohols; esters of acrylic or methacrylic acid and alcoholfluoroethers
  • Preferred monomers (A) are selected from the group constituted by n-butyl methacrylate, isobutyl methacrylate, tertio-butyl acrylate, tertio-butyl methacrylate, 2-ethylhexyl methacrylate, methyl methacrylate, 2-(N-methylperfluorooctanesulfonamido)ethyl acrylate, 2-(N-butylperfluorooctanesulfonamido)ethyl acrylate, or mixtures thereof.
  • polar monomers (B) examples include acrylic acid, methacrylic acid, N,N-dimethylacrylamide, dimethylaminoethyl methacrylate, quaternized dimethylaminoethyl methacrylate, (meth)acrylamide, N-t-butylacrylamide, maleic acid, maleic anhydride and hemi-esters thereof, hydroxyalkyl (meth)acrylates, diallyldimethylammonium chloride, vinylpyrrolidone, vinyl ethers, maleimides, vinylpyridine, vinylimidazole, polar vinyl and heterocyclic compounds, styrene sulfonate, allyl alcohol, vinyl alcohol, vinylcaprolactame or mixtures thereof.
  • monomers (B) are selected from the group constituted by acrylic acid, N,N-dimethylacrylamide, dimethylaminoethyl methacrylate, quaternized dimethylaminoethyl methacrylate, vinylpyrrolidone, and mixtures thereof.
  • the product KP 561 or KP 562 sold by SHIN ETSU may be mentioned in which monomer (A) is selected from esters of C 18 -C 22 alcohol and methacrylic acid.
  • polysiloxane macromers (C) with formula (XXVII) are preferably selected from those corresponding to the following general formula (XXVII):
  • macromers of polysiloxane with formula (XXIX) are used:
  • n being a number from 5 to 700 and I being a whole number in the range 0 to 3.
  • One implementation of the invention consists of using a copolymer which is capable of being obtained by radical polymerization starting from a mixture of monomers constituted by:
  • n being a number from 5 to 700 and I being a whole number in the range 0 to 3, the percentages by weight being calculated relative to the total weight of monomers.
  • a further particular implementation of the invention consists of using a copolymer which is capable of being obtained by radical polymerization from a mixture of monomers constituted by:
  • n being a number from 5 to 700 and I being a whole number in the range 0 to 3, the percentages by weight being calculated relative to the total monomer weight.
  • a further particular family of graft silicone polymers with an organic non-silicone backbone suitable for the present invention is constituted by graft silicone copolymers capable of being obtained by reactive extrusion of a polysiloxane macromer with a reactive terminal function on a polymer of the polyolefin type comprising reactive groups which are capable of reacting with the terminal function of a polysiloxane macromer to form a covalent bond to allow the silicone to graft onto the principal chain of the polyolefin.
  • Said polymers, and their preparation process, have been described in International patent application WO-A-95/00578.
  • the reactive polyolefins are preferably selected from polyethylenes or polymers of monomers derived from ethylene, such as propylene, styrene, alkylstyrene, butylene, butadiene, (meth)acrylates, vinyl esters or the like, comprising reactive functions which are capable of reacting with the terminal function of the polysiloxane macromer.
  • copolymers of ethylene or ethylene derivatives and monomers selected from those comprising a carboxylic function such as (meth)acrylic acid; those comprising an acid anhydride function such as maleic acid anhydride; those comprising an acid chloride function such as (meth)acrylic acid chloride; those comprising an ester function such as esters of (meth)acrylic acid; and those comprising an isocyanate function.
  • the silicone macromers are preferably selected from polysiloxanes comprising a functionalized group, at the end of the polysiloxane chain or close to the end of said chain, selected from the group constituted by alcohols, thiols, epoxies, primary and secondary amines, and more particularly from those corresponding to general formula (XXXII):
  • T is selected from the group constituted by NH 2 , NHRN, an epoxy function, OH, SH;
  • R 5 , R 6 , R 7 and RN independently designate C 1 -C 6 alkyl, phenyl, benzyl or C 6 -C 12 alkylphenyl, hydrogen;
  • s is a number from 2 to 00, t is a number from 0 to 1000 and
  • y is a number from 1 to 3.
  • They preferably have a number average molecular mass from 5000 to 300000, more preferably from 8000 to 200000, and more particularly from 9000 to 40000.
  • the film-forming polymer may be obtained from the MINNESOTA MINING AND MANUFACTURING COMPANY under the polymer trade names “SILICONE PLUS”.
  • poly(isobutyl-co-FOSEA methyl methacrylate)-g-poly(dimethylsiloxane) is sold under the trade name SA 70-5 IBMMF.
  • Said graft silicone polymer or polymers has a polysiloxane backbone grafted with organic non-silicone monomers containing a principal silicone chain (or polysiloxane (/SiO—) n ) on which is grafted, within said chain and optionally at one of its ends, at least one organic group comprising no silicone.
  • Polymers with a polysiloxane backbone grafted with organic non-silicone monomers of the invention may be existing commercially available products, or they may be obtained by any means known to the skilled person, in particular by a reaction between (i) a starting silicone correctly functionalized on one or more of its silicon atoms and (ii) an organic non-silicone compound itself correctly functionalized by a function which is capable of reacting with the functional group or groups carried by said silicone to form a coavalent bond; a classic example of said reaction is the hydrosilylation reaction between —Si—H groups and vinyl groups, CH 2 ⁇ CH—, or the reaction between thio-functional groups —SH and the same vinyl groups.
  • the silicone polymer with a polysiloxane backbone grafted with non-silicone organic monomers which is employed is constituted by the result of radical copolymerization between at least one non-silicone anionic organic monomer with an ethylenically unsaturated bond and/or a hydrophobic non-silicone organic monomer with an ethylenically unsaturated bond and a silicone having at least one functional group in its chain, and more preferably, capable of reacting with said ethylenically unsaturated bonds of said non-silicone monomers to form a covalent bond, in particular thiofunctional groups.
  • said anionic monomers with an ethylenically unsaturated bond are preferably selected, alone or as mixtures, from unsaturated linear or branched carboxylic acids which are optionally partially or completely neutralized into the salt form, said unsaturated carboxylic acid(s) more particularly possibly being acrylic acid, methacrylic acid, maleic acid, itaconic acid, fumaric acid or crotonic acid.
  • unsaturated carboxylic acid(s) more particularly possibly being acrylic acid, methacrylic acid, maleic acid, itaconic acid, fumaric acid or crotonic acid.
  • Particular suitable salts are alkali, alkaline-earth and ammonium salts.
  • the organic group with an anionic nature which is constituted by the result of radical (homo)polymerization of at least one unsaturated carboxylic acid type anionic monomer may, after reaction, be post-neutralized with a base (sodium hydroxide, ammonia, etc) to put it into its salt form.
  • the hydrophobic monomers with an ethylenically unsaturated bond are preferably selected, alone or as a mixture, from esters of acrylic acid and alkanols and/or esters of methacrylic acid and alkanols.
  • the alkanols are preferably C 1 to C 30 , more particularly C 1 to C 22 .
  • Preferred monomers are selected from the group constituted by isooctyl (meth)acrylate, isononyl (meth)acrylate, 2-ethylhexyl (meth)acrylate, lauryl (meth)acrylate, isopentyl (meth)acrylate, n-butyl (meth)acrylate, isobutyl (meth)acrylate, methyl (meth)acrylate, tertio-butyl (meth)acrylate, tridecyl (meth)acrylate and stearyl (meth)acrylate, or mixtures thereof.
  • silicone polymers having a polysiloxane backbone grafted with organic non-silicone monomers which is particularly suitable to carrying out the present invention is constituted by silicone polymers comprising the moiety with the following formula (XXXIII) in their structure:
  • radicals G 1 which may be identical or different, represent hydrogen or a C 1 -C 10 alkyl radical, or a phenyl radical
  • radicals G 2 which may be identical or different, represent a C 1 -C 10 alkylene group
  • G 3 represents a polymer residue resulting from (homo)polymerization of at least one anionic monomer having an ethylenically unsaturated bond
  • G 4 represents a polymer residue resulting from (homo)polymerization of at least one monomer of at least one hydrophobic [sic] monomer with an ethylenically unsaturated bond
  • m and n equal 0 or 1
  • a is a whole number from 0 to 50
  • b is a whole number which may be in the range 10 to 350
  • c is a whole number from 0 to 50; provided that one of parameters a and c is other than 0.
  • silicone polymers corresponding to formula (XXXIII) are polydimethylsiloxanes (PDMS) onto which are grafted, via a secondary thiopropylene type bond, mixed polymer moieties of the poly (meth)acrylic acid type and of the alkyl poly (meth)acrylic type.
  • PDMS polydimethylsiloxanes
  • silicone polymers corresponding to formula (XXXIII) are polydimethylsiloxanes (PDMS) onto which are grafted, via a secondary thiopropylene type bond, polymer moieties mixed of the isobutyl poly (meth)acrylate type.
  • PDMS polydimethylsiloxanes
  • Such polymers comprise polymers comprising at least one group with formula (XXXIV):
  • a, b and c which may be identical or different, are each a number from 1 to 100000; and the terminal groups, which may be identical or different, are each selected from linear C 1 to C 20 alkyl groups, C 3 to C 20 alkyl groups with a branched chain, C 3 to C 20 aryl groups, linear C 1 to C 20 alkoxy groups and branched C 3 to C 20 alkoxy groups.
  • silicone polymers having a polysiloxane backbone grafted by non-silicone organic monomers which is particularly suitable for implementation of the present invention is constituted by silicone polymers comprising the following moiety with formula (XXXV) in their structure:
  • G 5 represents a polymer residue resulting from (homo)polymerization of at least one hydrophobic monomer with an ethylenically unsaturated bond or from copolymerization of at least one anionic monomer with an ethylenically unsaturated bond and at least one hydrophobic monomer with an ethylenically unsaturated bond;
  • n is equal to 0 or 1;
  • a is a whole number from 0 to 50;
  • b is a whole number which may be in the range 10 to 350; provided that a is other than 0.
  • the number average molecular mass of the silicone polymers having a polysiloxane backbone grafted by organic non-silicone monomers of the invention preferably varies from about 10000 to 1000000, more preferably from about 10000 to 100000.
  • a silicone film-forming polymer which is particularly suitable for the present invention may be a copolymer comprising carboxylate groups and polydimethylsiloxane groups.
  • copolymer comprising carboxylate groups and polydimethylsiloxane groups means a copolymer obtained from a) one or more carboxylic monomers (acid or ester) and b) one or more polydimethylsiloxane chains (PDMS).
  • carboxylic monomer as used in the present application means both carboxylic acid monomers and carboxylic acid ester monomers.
  • monomer a) may, for example, be selected from acrylic acid, methacrylic acid, maleic acid, fumaric acid, itaconic acid, crotonic acid, their esters and mixtures of said monomers.
  • Ester monomers that may be mentioned: acrylate, methacrylate, maleate, fumarate, itaconoate and/or crotonoate.
  • monomers in the form of esters are selected from linear or branched alkyl acrylates and methacrylates, preferably C 1 -C 24 and more preferably C 1 -C 22 , the alkyl radical preferably being selected from methyl, ethyl, stearyl, butyl, 2-ethylhexyl radicals, and mixtures thereof.
  • the copolymer may also comprise, as carboxylate groups, at least one group selected from acrylic acid, methacrylic acid, methyl, ethyl, stearyl, butyl, 2-ethylhexyl acrylates or methacrylates, and mixtures thereof.
  • polydimethylsiloxanes also known as organopolysiloxanes, abbreviated to PDMS
  • PDMS organopolysiloxanes
  • the PDMS chains may be used to obtain the copolymer comprising at least one polymerizable radical group, preferably located on at least one of the chain ends, i.e. the PDMS may, for example, have a polymerizable radical on both ends of the chain or a polymerizable radical group on one end of the chain and a terminal trimethylsilyl group on the other end of the chain.
  • copolymers used are generally obtained using the usual polymerization and grafting methods, for example by radical polymerization (A) of a PDMS comprising at least one polymerizable radical (for example on one end of the chain or on both ends) and (B) of at least one carboxylic monomer as described, for example, in U.S. Pat. No. 5,061,481 and U.S. Pat. No. 5,219,560.
  • A radical polymerization
  • a PDMS comprising at least one polymerizable radical (for example on one end of the chain or on both ends)
  • B of at least one carboxylic monomer as described, for example, in U.S. Pat. No. 5,061,481 and U.S. Pat. No. 5,219,560.
  • the copolymers obtained generally have a molecular weight from about 3000 to 200000 and preferably from about 5000 to 100000.
  • the copolymer may be as is, or in the dispersed form in a solvent such as lower alcohols containing 2 to 8 carbon atoms, such as isopropyl alcohol, or oils such as volatile silicone oils (for example cyclopentasiloxane).
  • a solvent such as lower alcohols containing 2 to 8 carbon atoms, such as isopropyl alcohol, or oils such as volatile silicone oils (for example cyclopentasiloxane).
  • copolymers which may be used that may be mentioned are copolymers of acrylic acid and stearyl acrylate with polydimethylsiloxane grafts, copolymers of stearyl methacrylate with polydimethylsiloxane grafts, copolymers of acrylic acid and stearyl methacrylate with polydimethylsiloxane grafts, copolymers of methyl methacrylate, butyl methacrylate, 2-ethylhexyl acrylate and stearyl methacrylate with polydimethylsiloxane grafts.
  • copolymers sold by SHIN-ETSU under the trade names KP-561 (CTFA: acrylates/dimethicone), KP-541 where the copolymer is dispersed at 60% by weight in isopropyl alcohol (CTFA name: acrylates/dimethicone and isopropyl alcohol), KP-545 where the copolymer is 30% dispersed in cyclopentasiloxane (CTFA name: acrylates/dimethicone and cyclopentasiloxane).
  • KP561 is used; that copolymer is not dispersed in a solvent, but is in a waxy form, its melting point being about 30° C.
  • the total quantity of polymer must be in a quantity sufficient to form a cohesive film on the skin and/or lips capable of following the movements of the skin and/or the lips without detaching or cracking.
  • a plasticizer may be associated with it to reduce that mixing temperature.
  • the plasticizer may be selected from plasticizers which are normally used in the field of application, and especially from compounds which may be solvents for the polymer.
  • magnetic particles also termed as “magnetic bodies”, means particles presenting magnetic susceptibility, i.e. particles that are sensitive to the action of a magnetic field, and that tend to come into alignment with the field lines, for example.
  • the composition may contain both magnetic particles and non-magnetic particles.
  • the presence of magnetic particles and of non-magnetic particles in the composition makes it possible to create novel optical effects that can be modulated under the effect of a magnetic field, for example.
  • the magnetic particles used preferably do not present any remanent magnetism.
  • the magnetic particles may comprise any magnetic material that presents sensitivity to the lines of a magnetic field, regardless of whether the field is produced by a permanent magnet or is the result of induction, the material being selected from nickel, cobalt, iron, and alloys and oxides thereof, in particular Fe 3 O 4 , and also from gadolinium, terbium, dysprosium, erbium, and alloys and oxides thereof, for example.
  • the magnetic material may be of the “soft” or of the “hard” type, and in particular may comprise metallic iron, in particular soft iron, which may optionally be coated.
  • the magnetic particles may optionally present a multilayer structure including at least one layer of a magnetic material such as iron, nickel, cobalt, and alloys and oxides thereof, in particular Fe 3 O 4 , for example.
  • a magnetic material such as iron, nickel, cobalt, and alloys and oxides thereof, in particular Fe 3 O 4 , for example.
  • the magnetic particles are preferably aspherical, presenting an elongate shape, for example.
  • the magnetic particles when they are subjected to the magnetic field, they tend to become oriented with their longitudinal axes in alignment with the field lines, and they are subjected to a change in orientation which results in the first composition changing in appearance.
  • the magnetic particles are substantially spherical, their appearance is preferably non-uniform, so that a change in orientation results in a change in appearance.
  • the quantity of magnetic particles is sufficient to enable the appearance of the composition to depend on their orientation and/or on their positioning.
  • the concentration of magnetic particles may be in the range about 0.05% to about 97% by weight, for example, and in particular in the range about 0.1% to about 95% by weight, and preferably in the range about 0.1% to about 90% by weight, e.g. about 3% by weight.
  • the size of the magnetic particles may be in the range 1 nanometer (nm) to 700 micrometers ( ⁇ m), for example, preferably in the range 1 ⁇ m to 500 ⁇ m, and more preferably in the range 10 ⁇ m to 150 ⁇ m.
  • size means the size given by the statistical grain size distribution at half the population, referred to as “D50”.
  • the magnetic particles of the first composition may comprise magnetic pigments.
  • Particularly suitable pigments are nacres comprising iron oxide Fe 3 O 4 .
  • pigments presenting magnetic properties are those sold under the trade names COLORONA BLACKSTAR BLUE, COLORONA BLACKSTAR GREEN, COLORONA BLACKSTAR GOLD, COLORONA BLACKSTAR RED, CLOISONNE NU ANTIQUE SUPER GREEN, MICRONA MATTE BLACK (17437), MICA BLACK (17260), COLORONA PATINA SILVER (17289), and COLORONA PATINA GOLD (117288) by MERCK, or indeed FLAMENCO TWILIGHT RED, FLAMENCO TWILIGHT GREEN, FLAMENCO TWILIGHT GOLD, FLAMENCO TWILIGHT BLUE, TIMICA NU ANTIQUE SILVER 110 AB, TIMICA NU ANTIQUE GOLD 212 GB, TIMICA NU-ANTIQUE COPPER 340 AB, TIMICA NU ANT
  • Black iron oxide particles e.g. those sold under the trade name SICOVIT noir E172 by BASF, or soft-iron based particles proposed under the trade name STAPA® WM IRON VP 041040 by ECKART, may also be mentioned.
  • the magnetic particles may be fibers.
  • fibers means generally elongate bodies presenting, for example, a form factor in the range 3.5 to 2500 or 5 to 500, e.g. 5 to 150.
  • the form factor is defined by the ratio L/D, where L is the length of the fiber and D is the diameter of the circle in which the widest cross-section of the fiber is inscribed.
  • the cross-section of the fibers may be inscribed in a circle having a diameter in the range 2 nm to 500 ⁇ m, e.g. in the range 100 nm to 100 ⁇ m, or even 1 ⁇ m to 50 ⁇ m.
  • the fibers may present a length in the range 1 ⁇ m to 10 millimeters (mm), e.g. 0.1 mm to 5 mm, or even 0.3 mm to 3.5 mm.
  • the fibers may present a weight in the range 0.15 denier to 30 denier (weight in grams for 9 km of thread), e.g. 0.18 denier to 18 denier.
  • the cross-section of the fibers may be of any shape, e.g. circular, or polygonal, in particular square, hexagonal, or octagonal.
  • the composition may contain solid or hollow fibers that may be independent or interlinked, e.g. braided.
  • the composition may contain fibers having ends that are blunted and/or rounded, e.g. by polishing.
  • the shape of the fibers need not be significantly modified when they are inserted into the composition, with said fibers being initially rectilinear and sufficiently rigid to keep their shape.
  • the fibers may present flexibility that enables them to be substantially deformed within the composition.
  • the fibers may contain a non-zero amount, that may be as great as 100%, of a magnetic material selected from soft magnetic materials, hard magnetic materials, in particular based on iron, zinc, nickel, cobalt, or manganese, and alloys and oxides thereof, in particular Fe 3 O 4 , rare earths, barium sulfate, iron-silicon alloys, possibly containing molybdenum, Cu 2 MnAl, MnBi, or a mixture thereof, this list not being limiting.
  • a magnetic material selected from soft magnetic materials, hard magnetic materials, in particular based on iron, zinc, nickel, cobalt, or manganese, and alloys and oxides thereof, in particular Fe 3 O 4 , rare earths, barium sulfate, iron-silicon alloys, possibly containing molybdenum, Cu 2 MnAl, MnBi, or a mixture thereof, this list not being limiting.
  • said magnetic particles may be present at least at the surface of the fibers, or only at the surface of the fibers, or only inside the fibers, or they may even be dispersed within the fibers in substantially uniform manner, for example.
  • each fiber may include a non-magnetic core with a plurality of magnetic particles on its surface.
  • Each fiber may also include a synthetic matrix containing a plurality of magnetic grains dispersed therein.
  • a synthetic material filled with magnetic particles may itself be covered by a non-magnetic membrane.
  • a non-magnetic membrane constitutes a barrier isolating the magnetic material(s) from the surrounding environment and/or it can provide color.
  • Each fiber may comprise a one-piece magnetic core and be covered by a non-magnetic membrane, or it may comprise a one-piece non-magnetic core and be covered by a magnetic membrane.
  • the composition may contain fibers made by extruding or co-extruding one or more polymeric materials, in particular thermoplastics and/or elastomers.
  • One of the extruded materials may contain a filler of dispersed magnetic particles.
  • Each fiber may comprise a synthetic material selected from polyamides; polyethylene terephthalate (PET); acetates; polyolefins, in particular polyethylene (PE) or polypropylene (PP); polyvinyl chloride (PVC); polyester block amide; plasticized Rilsan®; elastomers, in particular polyester elastomers, polyethylene (PE) elastomers, silicone elastomers, nitrile elastomers; or a mixture of these materials, this list not being limiting.
  • PET polyethylene terephthalate
  • PVC polyvinyl chloride
  • polyester block amide polyester block amide
  • plasticized Rilsan® plasticized Rilsan®
  • elastomers in particular polyester elastomers, polyethylene (PE) elastomers, silicone elastomers, nitrile elastomers; or a mixture of these materials, this list not being limiting.
  • the composition may contain composite fibers each comprising a magnetic core that is covered, at least in part, by at least one non-magnetic, synthetic, or natural material.
  • the magnetic core may be covered by co-extruding a membrane made of a non-magnetic material around the core.
  • the core may alternatively be covered in some other way, e.g. by polymerization in situ.
  • the core may be a single piece or it may include a filler of magnetic grains dispersed in a matrix.
  • the composition may also contain composite fibers obtained by covering a non-magnetic, synthetic, or natural core, with a synthetic material filled with magnetic particles, the core being composed of a fiber made of wood; rayon; polyamide; plant matter; or polyolefin, in particular polyethylene, Nylon®, polyimide-amide, or aramid, this list not being limiting.
  • the composition may also contain magnetic composite particles, in particular a magnetic latex.
  • a magnetic composite particle is a composite material constituted by an organic or an inorganic matrix and by magnetic grains. At their surfaces and/or within themselves, the magnetic composite particles may thus include grains of a magnetic material.
  • the composite particles may be constituted by a magnetic core covered by an organic or an inorganic matrix, or they may be constituted by an organic or an inorganic core covered by a magnetic matrix.
  • the magnetic composite particles include one of the above-mentioned magnetic materials, for example.
  • the size of the magnetic composite particles may be in the range 1 nm to 1 mm, for example, preferably in the range 100 nm to 500 ⁇ m, and more preferably in the range 500 nm to 100 ⁇ m.
  • size means the size given by the statistical grain size distribution at half the population, referred to as “D50”.
  • KISKER markets inorganic-matrix magnetic composite particles composed of silica.
  • DYNAL, SERADYN, ESTAPOR, and ADEMTECH propose organic-matrix magnetic composite particles that are also suitable for being used in the invention.
  • ESTAPOR markets magnetic latex constituted by grains of ferrite that are evenly distributed in a polystyrene matrix, said latex including 65% iron oxide, the mean diameter of the polystyrene particles being 890 nm, and the dry material mass content being 10%.
  • the composition may contain a ferrofluid, i.e. a stable colloidal suspension of magnetic particles, in particular of magnetic nanoparticles.
  • the particles having a size of the order of several tens of nanometers, for example, are dispersed in a solvent (water, oil, organic solvent), either by means of a surfactant or a dispersant, or by electrostatic interactions.
  • a solvent water, oil, organic solvent
  • the ferrofluids can be prepared by grinding ferrites or other magnetic particles until nanoparticles are obtained, which particles are then dispersed in a fluid containing a surfactant which is absorbed by the particles and stabilizes them, or else they can be prepared by precipitating a metallic-ion solution in a basic medium.
  • Each particle of the ferrofluid presents a magnetic moment that is determined by the size of the particle, and by the nature of the magnetic material.
  • ferrofluid also encompasses an emulsion of ferrofluid droplets in a solvent. Each drop thus contains colloidal magnetic particles in stable suspension. This makes it possible to have a ferrofluid in any type of solvent.
  • the size of the magnetic particles in suspension in the ferrofluid may be in the range 1 nm to 10 ⁇ m, for example, preferably in the range 1 nm to 1 ⁇ m, and more preferably in the range 1 nm to 100 nm.
  • size means the size given by the statistical grain size distribution at half the population, referred to as “D50”.
  • the composition may also contain chains of particles and/or of magnetic fibers.
  • the composition may thus contain clumps of particles or fibers having a largest dimension, e.g. length, that may, for example, be in the range 1 nm to 10 mm, e.g. in the range 10 nm to 5 mm, or in the range 100 nm to 1 mm, or even in the range 0.5 ⁇ m to 3.5 mm, e.g. in the range 1 ⁇ m to 150 ⁇ m.
  • size means the size given by the statistical grain size distribution at half the population, referred to as “D50”.
  • chains of magnetic particles may be obtained by assembling colloidal magnetic particles, as described in the publications “Permanently linked monodisperse paramagnetic chains”, by E. M. Furst, C. Suzuki, M. Fermigier, A. P. Gast, Langmuir, 14, 7334-7336 (1998), “Suspensions of magnetic particles”, by M. Fermigier, Y. Grasselli, Bulletin of the SFP (105) July 1996, and “Flexible magnetic filaments as micromechanical sensors”, by C. Goubault, P. Jop, M. Fermigier, J. Baudry, E. Bertrand, J. Bibette, Phys. Rev. Lett., 91, 26, 260802-1 to 260802-4 (2003), the contents of which are incorporated herein by reference.
  • those articles describe how to proceed in order to obtain chains of magnetic-latex particles that include a polystyrene matrix containing grains of iron oxide with functions on the surface, and that are bonded together in permanent manner following a chemical reaction, in particular covalent bonds between the surfaces of adjacent particles; a method is also described of obtaining chains of ferrofluid-emulsion droplets that are bonded together by physical interactions.
  • the length and the diameter of the permanent chains obtained in this way can be controlled.
  • Such magnetic chains constitute anisotropic magnetic objects that can be oriented and displaced under the effect of a magnetic field.
  • the dimensions of the magnetic chains may satisfy the same conditions as for the magnetic fibers.
  • the compounds of the invention advantageously contain an oily phase and/or an aqueous phase, in particular as defined above.
  • said phase may contain oils other than the above-mentioned volatile oils, in particular non-volatile hydrocarbon or silicone oils in association, where necessary, with solid fatty materials such as waxes and/or paste compounds.
  • the composition may include reflective particles, in particular having metallic luster.
  • the particles may be in any form, e.g. flakes or globular, in particular spherical, possibly elongate, with a high form factor, where appropriate, and they may optionally present non-zero magnetic susceptibility, linked to the presence of a magnetic material.
  • the reflective particles When the reflective particles are magnetic, they preferably present a flat shape such that a change in their orientation within the composition leads to a change in appearance.
  • the reflective particles may optionally have a multilayer structure; for example, with a multilayer structure, they may have at least one layer preferably of uniform thickness, in particular of a reflective material, advantageously a metallic compound.
  • the reflective particles may, for example., be composed of at least one metallic compound, e.g. a metal oxide, in particular an oxide of titanium or iron obtained by synthesis.
  • a metallic compound e.g. a metal oxide, in particular an oxide of titanium or iron obtained by synthesis.
  • the reflective particles may, for example, comprise a natural or synthetic substrate, in particular a synthetic substrate which is at least partially coated with at least one, layer of a reflective material, in particular at least one layer of at least one metallic compound such as a metal or an alloy.
  • the layer of the metallic compound is advantageously an outer layer of the structure.
  • the substrate may be a single material or multiple materials, and it may be organic and/or inorganic.
  • the substrate may be selected from glasses, ceramics, graphite, metal oxides, aluminas, silicas, silicates, in particular aluminosilicates and borosilicates, synthetic mica, and mixtures thereof, this list not being limiting.
  • Examples of reflective particles comprising a mineral substrate coated with a metal layer are particles comprising a substrate of borosilicate coated with silver.
  • Glass substrate particles coated with silver in the form of flakes are sold under the trade name MICROGLASS METASHINE REFSX 2025 PS by TOYAL.
  • Glass substrate particles coated with nickel/chromium/molybdenum alloy are sold under the trade name CRYSTAL STAR GF 550, GF 2525 by the same company.
  • Reflective particles of any form may also be selected from particles of synthetic substrate at least partially coated with at least one layer of at least one metallic oxide selected, for example, from oxides of titanium, in particular TiO 2 , of iron, in particular Fe 2 O 3 , of tin, or of chromium, barium sulfate, and the following materials: MgF 2 , CrF 3 , ZnS, ZnSe, SiO 2 , Al 2 O 3 , MgO, Y 2 O 3 , SeO 3 , SiO, HfO 2 , ZrO 2 , CeO 2 , Nb 2 O 5 , Ta 2 O 5 , MoS 2 , and their mixtures.
  • particles comprising a substrate of synthetic mica coated with titanium dioxide, or glass particles coated either with brown iron oxide, titanium oxide, tin oxide, or one of their mixtures such as those sold under the trade name REFLECKS® by ENGELHARD.
  • reflective particles presenting, at their surface, a metallic compound or including at least one coated metallic compound
  • the reflective particles may optionally reflect the visible spectrum in substantially uniform manner, for example as occurs with particles coated with a metal such as silver or aluminum, which may, for example, thus lead to a metallic luster having a tone that is non-neutral, yellow, pink, red, bronze, orangey, brown, and/or coppery, depending on the nature of the metallic surface compound, for example.
  • the reflective particles may be present in the composition in an amount in the range 0.5% to 60% by weight relative to the total weight of the first composition, specifically 1% to 30% by weight, e.g. 3% to 10% by weight.
  • the composition may include at least one diffractive pigment.
  • diffractive pigment means a pigment that is capable of producing a variation in color depending on the angle of observation when lit by white light, because of the presence of a structure which diffracts the light. Such a pigment is also sometimes referred to as a holographic pigment.
  • a diffractive pigment may include a diffraction grating that is capable of diffracting an incident ray of monochromatic light in defined directions.
  • the diffraction grating may comprise a periodic pattern, in particular a line, with the distance between two adjacent patterns being the same as the wavelength of the incident light.
  • the diffraction grating separates the various spectral components of the light and produces a rainbow effect.
  • the diffractive pigment may be made with patterns having various profiles, in particular triangular, optionally symmetrical, notched, of optionally constant width, sinusoidal, or stepped.
  • the spatial frequency of the grating and the depth of the patterns are selected as a function of the degree of separation of the various desired orders.
  • the frequency may be in the range 500 lines per mm to 3000 lines per mm, for example.
  • Each of the particles of the diffractive pigment preferably presents a flat shape, and in particular a wafer shape.
  • a single pigment particle may include two crossed diffraction gratings that are optionally perpendicular, and that optionally have the same ruling.
  • the diffractive pigment may present a multilayer structure comprising a layer of reflective material that is covered on at least one side by a layer of dielectric material.
  • the dielectric material may make the diffractive pigment stiffer and longer lasting.
  • the dielectric material may thus be selected from the following materials: MgF 2 , SiO 2 , Al 2 O 3 , AlF 3 , CeF 3 , LaF 3 , NdF 3 , SmF 2 , BaF 2 , CaF 2 , LiF, and combinations thereof.
  • the reflective material may be selected from metals and alloys thereof, and also from non-metallic reflective materials: Metals that may be used include Al, Ag, Cu, Au, Pt, Sn, Ti, Pd, Ni, Co, Rd, Nb, Cr, and materials, combinations, or alloys thereof. Such a reflective material may, on its own, constitute the diffractive pigment which then comprises a single layer.
  • the diffractive pigment may include a multilayer structure comprising a core of dielectric material with a reflective layer covering at least one side, or indeed completely encapsulating, the core.
  • a layer of dielectric material may also cover the reflective layer(s).
  • the dielectric material used is thus preferably inorganic, and may, for example, be selected from metal fluorides, metal oxides, metal sulfides, metal nitrides, metal carbides, and combinations thereof.
  • the dielectric material may be in the crystalline, semi-crystalline, or amorphous state.
  • the dielectric material may, for example, be selected from the following materials: MgF 2 , SiO, SiO 2 , Al 2 O 3 , TiO 2 , WO, AlN, BN, B 4 C, WC, TiC, TiN, N 4 Si 3 , ZnS, glass particles, diamond-type carbons, and combinations thereof.
  • the diffractive pigment may be composed of a preformed dielectric or ceramic material such as a naturally lamellar mineral, e.g. mica peroskovite or talc; or synthetic platelets formed from glass, alumina, SiO 2 , carbon, an iron oxide/mica, mica covered in BN, BC, graphite, or bismuth oxychloride, and combinations thereof.
  • a naturally lamellar mineral e.g. mica peroskovite or talc
  • synthetic platelets formed from glass, alumina, SiO 2 , carbon, an iron oxide/mica, mica covered in BN, BC, graphite, or bismuth oxychloride, and combinations thereof.
  • Such materials may include silicone, metal silicides, semiconductor materials formed from elements of groups III, IV, and V, metals having a body centered cubic crystal structure, metal-ceramic compositions or materials, semiconductor glasses, and various combinations thereof.
  • the diffractive pigment used may be selected from those described in US patent application No. 2003/0031870 published on Feb. 13, 2003.
  • a diffractive pigment may, for example, have the following structure: MgF 2 /Al/MgF 2 , a diffractive pigment having this structure being sold by FLEX PRODUCTS under the trade names SPECTRAFLAIR 1400 Pigment Silver or SPECTRAFLAIR 1400 Pigment Silver FG.
  • the proportion by weight of MgF 2 may be in the range 80% to 95% of the total weight of the pigment.
  • diffractive pigments are sold under the trade names Metalure® Prismatic by ECKART®.
  • the quantity of diffractive pigment may be in the range 0.1% to 5% by weight relative to the total weight of the first composition.
  • the size of the diffractive pigment may be in the range 5 ⁇ m to 200 ⁇ m, and preferably in the range 5 ⁇ m to 100 ⁇ m, e.g. in the range 5 ⁇ m to 30 ⁇ m.
  • the thickness of the diffractive-pigment particles may be less than or equal to 3 ⁇ m, or preferably 2 ⁇ m, e.g. about 1 ⁇ m.
  • the composition may include at least one coloring agent producing light by absorbing at least a fraction of the visible spectrum.
  • Such a coloring agent producing a color by an absorption phenomenon, may be constituted by a pigment that is an optionally magnetic, organic, or inorganic, or it may be a hybrid comprising both organic material and inorganic material.
  • the coloring agent may optionally be a particulate compound.
  • the particles of a single magnetic pigment constitute both the coloring agent, producing the color by an absorption phenomenon, and the magnetic bodies.
  • said colorant may be selected from amongst liposoluble and hydrosoluble colorants.
  • liposoluble colorants are Sudan red, D&C Red No. 17, D&C Green No. 6, ⁇ -carotene, soybean oil, Sudan brown, D&C Yellow No. 11, D&C Violet No. 2, D&C orange No. 5, and quinoline yellow.
  • hydrosoluble colorants examples include beetroot juice and methylene blue.
  • the colorants may represent 0.1% to 20% by weight of the first or second composition, or even 0.1% to 6%, when present.
  • the coloring agents may also be a lake or an organic pigment selected from the following materials and mixtures thereof:
  • Organic pigments that may be mentioned include those with the following denominations: D&C Blue No. 4, D&C Brown No. 1, D&C Green No. 5, D&C Green No. 6, D&C Orange No. 4, D&C Orange No. 5, D&C Orange No. 10, D&C Orange. No. 11, D&C Red No. 6, D&C Red No. 7, D&C Red No. 17, D&C Red No. 21, D&C Red No. 22, D&C Red No. 27, D&C Red No. 28, D&C Red No. 30, D&C Red No. 31, D&C Red No. 33, D&C Red No. 34, D&C Red No. 36, D&C Violet No. 2, D&C Yellow No. 7, D&C Yellow No. 8, D&C Yellow No. 10, D&C Yellow No. 11, FD&C Blue No. 1, FD&C Green No. 3, FD&C Red No. 40, FD&C Yellow No. 5, FD&C Yellow No. 6.
  • the coloring agent may be an organic lake supported by an organic support such as colophane or aluminum benzoate, for example.
  • Particular organic lakes include those with the following denominations: D&C Red No. 2 Aluminum lake, D&C Red No. 3 Aluminum lake, D&C Red No. 4 Aluminum lake, D&C Red No. 6 Aluminum lake, D&C Red No. 6 Barium lake, D&C Red No. 6 Barium/Strontium lake, D&C Red No. 6 Strontium lake, D&C Red No. 6 Potassium lake, D&C Red No. 7 Aluminum lake, D&C Red No. 7 Barium lake, D&C Red No. 7 Calcium lake, D&C Red No. 7 Calcium/Strontium lake, D&C Red No. 7 Zirconium lake, D&C Red No. 8 Sodium lake, D&C Red No. 9 Aluminum lake, D&C Red No.
  • the composition may contain a composite pigment including a core that is coated at least in part by a membrane.
  • a composite pigment may be composed of particles comprising:
  • At least one binder may advantageously contribute to fixing the organic coloring substance onto the inorganic core.
  • the particles of composite pigment may have a variety of forms.
  • said particles may be in the form of flakes or they may be globular, in particular spherical, and may be hollow or solid.
  • the term “in the form of flakes” means particles for which the ratio of the largest dimension to the thickness is 5 or more.
  • a composite pigment may, for example, have a specific surface area in the range 1 square meter per gram (m 2 /g) to 1000 m 2 /g, in particular in the range about 10 m 2 /g to about 600 m 2 /g, and in particular in the range about 20 m 2 /g to about 400 m 2 /g.
  • the specific surface area is the value measured using the BET (Brunauer-Emmett-Teller) method.
  • the proportion by weight of the core may exceed 50% relative to the total weight of the composite pigment, for example lying in the range 50% to 70%, e.g. in the range 60% to 70%.
  • the composite pigment may be different from an interferential pigment as described in U.S. Pat. No. 6,428,773, for example.
  • an interferential pigment includes a plurality of layers of constant thickness of materials selected so as to be able to produce optical interferences.
  • the saturation C* of the composite pigment may be greater than or equal to 30, measured in accordance with the following protocol.
  • Pure composite pigment is compacted in a rectangular dish having dimensions of 2 centimeters (cm) ⁇ 1.5 cm and a depth of 3 mm, by applying pressure of 100 bars.
  • the inorganic core may have any form that is suitable for fixing particles of organic coloring substance, for example spherical, globular, granular, polyhedral, acicular, spindle-shaped, flattened in the form of a flake, a rice grain, or a scale, and a combination of these forms, this list not being limiting.
  • the ratio of the largest dimension of the core to its smallest dimension may be in the range 1 to 50.
  • the inorganic core may have a mean size in the range about 1 nm to about 100 nm, or even in the range about 5 nm to about 75 nm, for example in the range about 10 nm to about 50 nm, in particular 20 nm or 25 nm.
  • mean size means the size given by the statistical grain size distribution at half the population, referred to as “D50”.
  • the mean size may be a number mean size determined by image analysis (electron microscopy).
  • the inorganic core may present a refractive index that is greater than or equal to 2, or even greater than or equal to 2.1, e.g. greater than or equal to 2.2.
  • the inorganic core may be formed from an optionally-magnetic material selected from a non-limiting list comprising metallic salts and metal oxides, in particular oxides of titanium, zirconium, cerium, zinc, iron, iron blue, aluminum, and chromium, aluminas, glasses, ceramics, graphite, silicas, silicates, in particular aluminosilicates and borosilicates, synthetic mica, and mixtures thereof.
  • metallic salts and metal oxides in particular oxides of titanium, zirconium, cerium, zinc, iron, iron blue, aluminum, and chromium, aluminas, glasses, ceramics, graphite, silicas, silicates, in particular aluminosilicates and borosilicates, synthetic mica, and mixtures thereof.
  • the inorganic core may have a specific surface area, measured using the BET method, in the range about 1 m 2 /g to about 1000 m 2 /g, preferably in the range about 10 m 2 /g to about 600 m 2 /g, for example in the range about 20 m 2 /g to about 400 m 2 /g.
  • the inorganic core may be colored if appropriate.
  • the organic coloring material may comprise at least one organic pigment, e.g. at least one organic lake.
  • the organic coloring material may be selected from the insoluble particulate compounds in the physiologically acceptable medium of the composition.
  • the organic coloring material may comprise pigments, e.g. organic lakes or other organic coloring materials, that may be selected from the following compounds and mixtures thereof:
  • Organic pigments that may be mentioned include those with the following denominations: D&C Blue No. 4, D&C Brown No. 1, D&C Green No. 5, D&C Green No. 6, D&C Orange No. 4, D&C Orange No. 5, D&C Orange No. 10, D&C Orange No. 11, D&C Red No. 6, D&C Red No. 7, D&C Red No. 17, D&C Red No. 21, D&C Red No. 22, D&C Red No. 27, D&C Red No. 28, D&C Red No. 30, D&C Red No. 31, D&C Red No. 33, D&C Red No. 34, D&C Red No. 36, D&C Violet No. 2, D&C Yellow No. 7, D&C Yellow No. 8, D&C Yellow No. 10, D&C Yellow No. 11, FD&C Blue No. 1, FD&C Green No. 3, FD&C Red No. 40, FD&C Yellow No. 5, FD&C Yellow No. 6.
  • the organic coloring substance may comprise an organic lake supported by an organic support such as colophane or aluminum benzoate, for example.
  • Particular organic lakes include those with the following denominations: D&C Red No. 2 Aluminum lake, D&C Red No. 3 Aluminum lake, D&C Red No. 4 Aluminum lake, D&C Red No. 6 Aluminum lake, D&C Red No. 6 Barium lake, D&C Red No. 6 Barium/Strontium lake, D&C Red No. 6 Strontium lake, D&C Red No. 6 Potassium lake, D&C Red No. 7 Aluminum lake, D&C Red No. 7 Barium lake, D&C Red No. 7 Calcium lake, D&C Red No. 7 Calcium/Strontium lake, D&C Red No. 7 Zirconium lake, D&C Red No. 8 Sodium lake, D&C Red No. 9 Aluminum lake, D&C Red No.
  • the proportion by weight of organic coloring material may lie in the range about 10 parts to about 500 parts by weight per 100 parts of inorganic core, or even in the range about 20 parts to about 250 parts by weight, e.g. in the range about 40 parts to about 125 parts by weight per 100 parts of inorganic core.
  • the total content of organic coloring material of the composition, coming from the composite pigment and from other possible pigments, may be less than 10%, for example, relative to the total weight of the composition.
  • the proportion of organic coloring material may exceed 30% relative to the total weight of the composite pigment, for example lying in the range 30% to 50%, e.g. in the range 30% to 40%.
  • the composite-pigment binder may be of any type provided that it allows the organic coloring substance to adhere to the surface of the inorganic core.
  • the binder may be selected from the following non-limiting list: silicone materials, polymeric, oligomeric or similar materials, in particular from organosilanes, fluoroalkylated organosilanes and polysiloxanes, for example polymethylhydrogen siloxane, as well as a variety of coupling agents such as coupling agents based on silanes, titanates, aluminates, zirconates, and mixtures thereof.
  • the silicone compound may be selected from the following non limiting list:
  • the organosilane compounds (1) may be obtained from alkoxysilane compounds represented by formula (I):
  • alkoxysilane compounds may include alkoxysilanes selected from: methyltriethoxysilane, dimethyldiethoxysilane, phenyltriethoxysilane, diphenyldiethoxysilane, methyltrimethoxysilane, dimethyldimethoxysilane, phenyltrimethoxysilane, diphenyldimethoxysilane, isobutyltrimethoxysilane, decyltrimethoxysilane, and the like, in particular from methyltriethoxysilane, phenyltriethoxysilane, methyltrimethoxysilane, dimethyldimethoxysilane, isobutyltrimethoxysilane, more preferably from methyltriethoxysilane, methyltrimethoxysilane, and phenyltriethoxysilane.
  • the polysiloxanes (2) may in particular have formula (II):
  • R 2 represents H— or CH 3 — and d lies in the range 15 to 450.
  • the modified polysiloxanes (2A) may in particular have the following formula (III):
  • R 3 represents —(CH 2 ) h —;
  • R 4 represents —(CH 2 ) i —CH 3 ;
  • R 5 represents —OH, —COOH, —CH ⁇ CH 2 , —C(CH 3 ) ⁇ CH 2 or —(CH 2 ) j —CH 3 ;
  • R 6 represents —(CH 2 ) k —CH 3 ;
  • g and h lie independently in the range 1 to 15; j and k lie independently in the range 0 to 15;
  • e lies in the range 1 to 50, and f lies in the range 1 to 300;
  • R 7 , R 8 , and R 9 independently represent —(CH 2 ) q —;
  • R 10 represents —OH, —COOH, —CH ⁇ CH 2 , —C(CH 3 ) ⁇ CH 2 or —(CH 2 ) r —CH 3 ;
  • R 11 represents —(CH 2 ) s — CH 3 ;
  • n and q lie independently in the range 1 to 15, r and s lie independently in the range 0 to 15;
  • e lies in the range 1 to 50, and f lies in the range 1 to 300,
  • R 12 represents —(CH 2 ) v —; v lies in the range 1 to 15; t lies in the range 1 to 50, and u lies in the range 1 to 300; or mixtures thereof.
  • Preferred modified polysiloxanes (2A) are modified polysiloxanes carrying polyethers with formula (III).
  • Polysiloxanes modified at the terminal portion (2B) may have formula (VI):
  • R 13 and R 14 may represent —OH, R 16 —OH, or R 17 —COOH, independently of each other;
  • R 15 represents —CH 3 or —C 6 H 5 ;
  • R 16 and R 17 represent —(CH 2 ) y —; y lies in the range 1 to 15; w lies in the range 1 to 200; and x lies in the range 0 to 100.
  • Preferred polysiloxanes modified on at least one end include those carrying at least a radical (R 16 and/or R 17 ) carrying a carboxylic acid group on at least one terminal silicon atom.
  • Fluoroalkylated organosilane compounds (3) may be obtained from fluoroalkylsilanes represented by formula (VII):
  • the fluoroalkylsilanes may be selected from the following non limiting list: trifluoropropyltrimethoxysilane, tridecafluorooctyltrimethoxysilane, heptadecafluorodecyltrimethoxysilane, heptadecafluorodecylmethyldimethoxysilane, trifluoropropyltriethoxysilane, tridecafluorooctyltriethoxysilane, heptadecafluorodecyltriethoxysilane, heptadecafluorodecylmethyldiethoxysilane and the like, in particular trifluoropropyltrimethoxysilane, tridecafluorooctyltrimethoxysilane and heptadecafluorodecyltrimethoxysilane, and more preferably trifluoropropyl trimethoxysi
  • the silane-based coupling agents may be selected from the following non limiting list: vinyltrimethoxysilane, vinyltriethoxysilane, ⁇ -aminopropyl-triethoxysilane, ⁇ -glycidoxypropyltrimethoxysilane, ⁇ -mercaptopropyltrimethoxysilane, ⁇ -methacryloxypropyltrimethoxysilane, N- ⁇ (aminoethyl)- ⁇ -aminopropyltrimethoxysilane, ⁇ -glycidoxypropylmethyldimethoxysilane, ⁇ -chloropropyltrimethoxysilane, and the like.
  • the titanate-based coupling agents may be selected from the following list: isopropylstearoyl titanate, isopropyltris(dioctylpyrophosphate) titanate, isopropyltri(N-aminoethyl-aminoethyl) titanate, tetraoctylbis(ditridecylphosphate) titanate, tetra(2,2-diaryloxymethyl-1-butyl)bis(ditridecyl)phosphate titanate, bis(dioctylpyrophosphate)oxyacetate titanate, bis(dioctylpyrophosphate)ethylene titanate, and the like.
  • the aluminate-based coupling agents may be selected from acetoalkoxyaluminum diisopropylate, aluminum diisopropoxymonoethylacetoacetate, aluminum triethylacetoacetate, aluminum triacetylacetonate, and the like.
  • the zirconate-based coupling agents may be selected from the following list: zirconium tetrakisacetylacetonate, zirconium dibutoxybisacetylacetonate, zirconium tetrakisethylacetoacetate, zirconium tributoxymonoethylacetoacetate, zirconium tributoxyacetylacetonate, and the like.
  • the compounds acting as a binder may have a molar mass in the range 300 to 100 000.
  • the binder is preferably in the liquid state or is soluble in water or other solvents.
  • the quantity of binder may lie in the range 0.01% to 15%, in particular from 0.02% to 12.5%, and more particularly from 0.03% to 10% by weight (calculated with respect to C or Si) relative to the weight of particles comprising the core and the binder. Further details regarding the calculation of the relative quantity of binder can be found in patent application EP 1 184 426 A2.
  • the relative proportion of binder may be less than or equal to 5%, e.g. less than or equal to 3%, relative to the total weight of the composite pigment.
  • the composite pigment may be prepared using any appropriate method, e.g. a mechanical/chemical method or a method of precipitation in solution, with the organic coloring material being dissolved, then precipitated onto the surface of the core.
  • a binder may optionally be used.
  • a method comprising mechanically mixing an organic pigment and the inorganic core is preferred.
  • a binder may be added or mixed to the inorganic core before the organic coloring material is introduced.
  • the composite pigment may, for example, be produced using one of the processes described in European patent applications EP 1 184 426 and EP 1 217 046, the contents of which are hereby incorporated by reference, and advantageously by the process described in EP 1 184 426.
  • the particles intended to constitute the inorganic core are first mixed with the binder.
  • the binder can adhere uniformly to the surface of the inorganic core, it is preferable to pass said particles initially through a mill to disaggregate them.
  • the mixing and agitation conditions are selected so that the core is uniformly coated with binder.
  • Such conditions may be controlled so that the linear load is in the range 19.6 N/cm (newtons/centimeter) to 19160 N/cm, in particular in the range 98 N/cm to 14170 N/cm and preferably in the range 147 N/cm to 980 N/cm;
  • the treatment time is in the range 5 minutes to 24 hours, preferably in the range 10 minutes to 20 hours;
  • the rotation rate may be in the range 2 rpm (revolutions per minute) to 1000 rpm, in particular in the range 5 rpm to 1000 rpm, and more preferably in the range 10 rpm to 800 rpm.
  • the organic coloring substance is added and mixed with agitation so that it adheres to the layer of binder.
  • Mixing and agitation may be carried out using an apparatus which can apply a sharp shearing and/or compressive force to the mixture of powders.
  • apparatus of that type are roller mixers, blade mixers, and the like. Roller mixers are particularly suitable. A list of suitable apparatus is given in EP 1 184 426 A2.
  • the organic coloring substance is dissolved in ethanol and the inorganic cores are then dispersed in said ethanolic solution.
  • the composition may include at least one interferential or diffractive pigment and/or reflective particles.
  • the first composition contains at least one goniochromatic coloring agent in which a color change can be observed as a function of the angle of observation.
  • the goniochromatic coloring agent may optionally be magnetic.
  • the coloring agent may be selected so that its range of colors passes substantially through the color of the magnetic particles.
  • this can make the magnetic particles more difficult to detect so long as they are not oriented under the effect of a magnetic field.
  • the composition may contain at least one goniochromatic coloring agent which may present magnetic properties, where appropriate.
  • goniochromatic coloring agent means a coloring agent that makes it possible, when the composition is spread on a surface, to obtain a color path in the a*b* plane of the 1976 CIE color space which corresponds to a variation Dh° of the hue angle h° of at least 200 when the angle of observation is varied relative to the normal in the range 0° to 80° for light at an angle of incidence of 45°.
  • the color path may be measured by means of a spectrogonioreflectometer, from INSTRUMENT SYSTEMS and referenced GON 360 GONIOMETER, after the first composition has been spread in the fluid state to a thickness of 300 ⁇ m by means of an automatic spreader on a contrast card from ERICHSEN and referenced Typ 24/5, the measurements being performed on the black background of the card.
  • a spectrogonioreflectometer from INSTRUMENT SYSTEMS and referenced GON 360 GONIOMETER
  • the goniochromatic coloring agent may be selected from multilayer interference structures and liquid crystal coloring agents.
  • a multilayer structure may comprise at least two layers, each layer being produced, for example, from at least one material selected from the group constituted by the following materials: MgF 2 , CeF 3 , ZnS, ZnSe, Si, SiO 2 , Ge, Te, Fe 2 O 3 , Pt, Va, Al 2 O 3 , MgO, Y 2 O 3 , S 2 O 3 , SiO, HfO 2 , ZrO 2 , CeO 2 , Nb 2 O 5 , Ta 2 O 5 , TiO 2 , Ag, Al, Au, Cu, Rb, Ti, Ta, W, Zn, MoS 2 , cryolite, alloys, polymers, and combinations thereof.
  • the multilayer structure may optionally be symmetrical with respect to a central layer as regards the chemical nature of the stacked layers. Depending on the thickness and nature of the various layers, different effects are obtained.
  • Examples of symmetrical multilayer interference structures are as follows: Fe 2 O 3 /SiO 2 /Fe 2 O 3 /SiO 2 /Fe 2 O 3 , a pigment having this structure being sold under the trade name SICOPEARL by BASF; MoS 2 /SiO 2 /mica-oxide/SiO 2 /MoS 2 ; Fe 2 O 3 /SiO 2 /mica-oxide/SiO 2 /Fe 2 O 3 ; TiO 2 /SiO 2 /TiO 2 and TiO 2 /Al 2 O 3 /TiO 2 , pigments with these structures being sold under the trade name XIRONA by MERCK (Darmstadt).
  • liquid crystal coloring agents comprise silicones, or cellulose ethers onto which mesomorphic groups have been grafted.
  • suitable liquid crystal goniochromatic particles are those sold by CHENIX, and those sold under the trade name HELICONE® HC by WACKER.
  • Suitable goniochromatic coloring agents are some nacres; pigments having effects on synthetic substrates, in particular alumina, silica, borosilicate, iron oxide, or aluminum type substrates; or holographic interference flakes coming from a polyterephthalate film.
  • nacre means colored particles of any form, which may optionally be iridescent, as produced in the shells of certain mollusks, or which are synthesized, and which exhibit a “pearlescent” coloring effect by optical interference.
  • Nacres may be selected from nacre pigments such as mica titanium coated with iron oxide, mica coated with bismuth oxychloride, mica titanium coated with chromium oxide, mica titanium coated with an organic colorant, in particular of the type mentioned above, and nacre pigments based on bismuth oxychloride. They may also be particles of mica on the surface of which at least two successive layers of metal oxides and/or organic coloring substances have been superimposed.
  • the nacres may have a yellow, pink, red, bronze, orangey, brown, gold, and/or coppery color or glint.
  • nacres suitable for being introduced into the first composition are gold color nacres, in particular those sold by ENGELHARD under the trade names Brillant gold 212G (Timica), Gold 222C (Cloisonne), Sparkle gold (Timica), Gold 4504 (Chromalite), and Monarch gold 233 ⁇ (Cloisonne); bronze nacres, in particular those sold by MERCK under the trade names Bronze fine (17384) (Colorona) and Bronze (17353) (Colorona), and by ENGELHARD under the trade name Super bronze (Cloisonne); orange nacres especially those sold by ENGELHARD under the trade names Orange 363C (Cloisonne) and Orange MCR 101 (Cosmica), and by MERCK under the trade names Passion orange (Colorona) and Matte orange (17449) (Microna); brown-tinted nacres sold by ENGELHARD under the trade names Nu-antique copper 340XB (Cloisonne)
  • the composition may contain at least one optionally-magnetic filler.
  • filler means particles of any form which are insoluble in the composition medium regardless of the temperature at which the composition is manufactured. A filler primarily acts to modify the rheology or texture of the composition. The nature and quantity of the particles could depend on the desired mechanical properties and textures.
  • fillers examples include amongst others talc, mica, silica, kaolin, and sericite, and powders of polyamide, polyolefin, e.g. polyethylene, polytetrafluoroethylene, polymethylmethacrylate, or polyurethane, powdered starch, and silicone resin beads.
  • the composition may include at least one cosmetically or dermatologically active ingredient.
  • Suitable cosmetically, dermatologically, hygienically, or pharmaceutically active ingredients for use in the compositions of the invention are moisturizing agents (polyols such as glycerine), vitamins (C, A, E, F, B, or PP), essential fatty acids, essential oils, ceramides, sphingolipids, liposoluble or nanoparticle sun screens, and specific skin treatment active ingredients (protective agents, antibacterials, anti-wrinkle agents, etc), self-tanning agents.
  • Said active ingredients may be used in concentrations in the range 0 to 20%, for example, in particular in the range 0.001% to 15% relative to the total weight of the composition.
  • composition may also contain ingredients that are routinely used in cosmetics, such as thickeners, surfactants, oligo-elements, moisturizing agents, softeners, sequestrating agents, fragrances, alkalinizing or acidifying agents, preservatives, antioxidants, UV filters, colorants, or mixtures thereof.
  • ingredients that are routinely used in cosmetics such as thickeners, surfactants, oligo-elements, moisturizing agents, softeners, sequestrating agents, fragrances, alkalinizing or acidifying agents, preservatives, antioxidants, UV filters, colorants, or mixtures thereof.
  • composition of the invention may include constituents which are conventionally used in the fields under consideration, and which are present in quantities appropriate to the desired dosage form.
  • the composition may be in a variety of forms, depending on its purpose.
  • the composition may thus be in any dosage form that is normally used for topical application, in particular in the anhydrous form, in the form of an oily or aqueous solution, an oily or aqueous gel, an oil-in-water or a water-in-oil emulsion, a wax-in-water or a water-in-wax emulsion, a multiple emulsion or a dispersion of oil in water due to vesicles located on the oil/water interface.
  • the mixture was kept at 1 h 30 at 90° C.
  • the mixture was kept at 90° C. for 3 hours then cooled.
  • a polymer was obtained comprising a first sequence or poly(isobornyl acrylate/isobornyl methacrylate) block with a Tg of 110° C., a second isobutyl polyacrylate sequence with a Tg of ⁇ 20° C. and an intermediate sequence which was a random isobornyl acrylate/isobornyl methacrylate/isobutyl acrylate polymer.
  • Said polymer had a mass average molecular mass of 100300 g/mol and a number average molecular mass of 22800 g/mol, i.e. a polydispersity index I of 4.40.
  • the lipstick composition was prepared by heating the non volatile oils to 60° C., with magnetic stirring. The sequenced polymer was introduced into a beaker along with the isododecane, and the whole was stirred with a Rayneri stirrer. When a transparent liquid was observed, the magnetic pigment was introduced and stirring was continued for 20 minutes with Rayneri stirring.
  • Said composition could be applied using an applicator as shown in FIG. 2 .
  • Drying of the composition was sufficiently slow to allow the formation of a pattern by exposure to the magnetic field, which modified the orientation of the magnetic pigment particles.
  • the composition set quickly enough for the pattern not to have time to be destroyed after the field was removed.
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US61992804P 2004-10-20 2004-10-20
PCT/FR2005/050563 WO2006037905A1 (fr) 2004-10-05 2005-07-08 Procede de maquillage des matieres keratiniques et kit pour la mise en oeuvre d'un tel procede
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US11/663,978 Abandoned US20080050324A1 (en) 2004-10-05 2005-07-08 Method of Applying Makeup by Means of a Magnetic Composition Including at Least One Differactive Pigment
US11/663,977 Abandoned US20090130037A1 (en) 2004-10-05 2005-07-08 Method of Applying Makeup to a Surface and a Kit for Implementing such a Method
US11/663,772 Active 2030-10-20 US9609934B2 (en) 2004-10-05 2005-07-08 Method of applying makeup by means of a magnetic composition including at least one interferential pigment
US11/663,776 Abandoned US20080044443A1 (en) 2004-10-05 2005-07-08 Method of Applying Makeup by Means of a Magnetic Composition Including at Least One Coloring Agent Producing a Color by Absorbing at Least a Fraction of the Visible Spectrum
US11/664,003 Abandoned US20080124288A1 (en) 2004-10-05 2005-07-08 Method of Applying Makeup by Means of a Magnetic Composition Incorporating at Least one Coloring Agent Having Optical Properties that are Sensitive to an External Stimulus
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JP2008515862A (ja) 2008-05-15
JP2008515791A (ja) 2008-05-15
US20060088484A1 (en) 2006-04-27
WO2006037904A1 (fr) 2006-04-13
JP2008515863A (ja) 2008-05-15
ES2602182T3 (es) 2017-02-20
EP1799068B1 (fr) 2016-08-17
JP4800315B2 (ja) 2011-10-26
JP2008515865A (ja) 2008-05-15
EP1799067B1 (fr) 2016-08-17
EP1799068A1 (fr) 2007-06-27
WO2006037906A1 (fr) 2006-04-13
ES2602181T3 (es) 2017-02-20
WO2006037902A1 (fr) 2006-04-13
WO2006037905A1 (fr) 2006-04-13
WO2006037903A1 (fr) 2006-04-13
EP1799064B1 (fr) 2016-08-17
WO2006037900A1 (fr) 2006-04-13
JP4841555B2 (ja) 2011-12-21
WO2006037907A1 (fr) 2006-04-13
US20080127990A1 (en) 2008-06-05
ES2393790T3 (es) 2012-12-28
FR2876011B1 (fr) 2006-12-29
EP1799067A1 (fr) 2007-06-27
JP4834669B2 (ja) 2011-12-14
EP1799069A1 (fr) 2007-06-27
EP1799065B1 (fr) 2016-08-17
EP1799066A1 (fr) 2007-06-27
US20080124288A1 (en) 2008-05-29
US9609934B2 (en) 2017-04-04
JP2008515790A (ja) 2008-05-15
JP4866360B2 (ja) 2012-02-01
ES2602735T3 (es) 2017-02-22
WO2006054002A1 (fr) 2006-05-26
FR2876011A1 (fr) 2006-04-07
JP4828540B2 (ja) 2011-11-30
US20080044443A1 (en) 2008-02-21
EP1796503A1 (fr) 2007-06-20
ES2602734T3 (es) 2017-02-22
JP4841556B2 (ja) 2011-12-21
US20080105272A1 (en) 2008-05-08
JP4879182B2 (ja) 2012-02-22
EP1796503B1 (fr) 2012-08-22
EP1799064A1 (fr) 2007-06-27
JP2008515474A (ja) 2008-05-15
JP2008515864A (ja) 2008-05-15
EP1799066B1 (fr) 2016-08-17
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US20080050324A1 (en) 2008-02-28
EP1799065A1 (fr) 2007-06-27

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