Classifications

• • 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

• a method of makeup of a support by means of a magnetic composition comprising reflective particles with a metallic sheen.
• the present invention relates to a process for making a support, natural such as skin, integuments or lips, or artificial, such as false nails, and a kit for implementing this method.
• the subject of the invention is a process for making up keratin materials, in particular the skin, the lips or the integuments, comprising the following steps:
• this cosmetic composition comprising:
• composition at least partially to a magnetic field so as to modify the orientation and / or to displace at least a part of the magnetic bodies.
• the particles formed at least partially of a metal or an alloy, possibly doped, provide a metallic reflection.
• a change in the orientation of the magnetic bodies under the effect of the magnetic field can lead to a change in the appearance of the composition.
• the shape of the deposit of the composition may be affected, which allows to create a relief for example.
• the magnetic bodies may be different from the reflective metal reflection particles or alternatively said particles may constitute all or part of the magnetic bodies.
• the metal reflecting reflective particles may constitute at least a portion of the magnetic bodies because the appearance of the Reflective particles with metallic reflection can be very sensitive to their orientation within the composition.
• the composition When applying the composition, it may be unexposed to the magnetic field.
• the latter can be exercised once the application has been made.
• the magnetic field may be applied so as to form at least one pattern on the composition, the latter being for example related to the geometry of the field lines.
• the invention thus makes it possible to create new makeup effects with a cosmetic composition, for example by making it possible to produce patterns in relief or conferring a relief impression or various other motifs, geometric or not.
• the magnetic field may be further applied to pattern the clarity and / or color of at least one region of the face or body to which the composition has been applied.
• the orientation of the magnetic bodies under the effect of the magnetic field makes it possible to modify the clarity of the composition and thus shape the appearance of the face according to the regions exposed to the field magnetic, in particular to achieve a make-up of the light / dark type, without sudden transition if desired between the light regions and dark regions.
• the magnetic field can be applied to darken the sides of the face to make it look thinner than it actually is.
• a layer of a second cosmetic composition is applied to the first, containing the magnetic bodies, for example in order to obtain an effect of depth, gloss, smoothness or other .
• This second composition may be transparent, colored or not.
• the second composition is for example intended for application to the lips or nails.
• the second composition can still be applied to the support before the first composition, for example to create a colored background or improve the strength of the first composition and / or comfort.
• the magnetic field can be applied until a fixed appearance of the composition containing the magnetic bodies, that is to say that the appearance of the latter ceases to evolve even if the magnetic field continues.
• the magnetic field can be applied for a time less than that causing the orientation and / or the final displacement of all the magnetic bodies of the exposed region.
• the magnetic field can be exerted successively on different regions of the support coated with the composition.
• the magnetic field can be exerted on disjoint regions of the support, for example to create separate patterns.
• a region of the support coated with the composition may be unexposed to the magnetic field, so as not to modify in this region the appearance of the composition after it has been deposited.
• Two regions of the support may be unequally exposed to the magnetic field.
• the composition may be applied in various ways, for example by means of a cosmetic applicator, preferably non-magnetic, selected for example from brushes, flocked tips and foams, woven fabrics, nonwovens, brushes or combs. , or without an applicator, the composition being for example spread with the fingers or sprayed.
• a cosmetic applicator preferably non-magnetic, selected for example from brushes, flocked tips and foams, woven fabrics, nonwovens, brushes or combs.
• the composition being for example spread with the fingers or sprayed.
• the composition is applied to the support through a perforated mask. This may allow for example to achieve a predetermined pattern, corresponding to the shape of the a journey. At least one region of the support covered by the composition can then be exposed to the magnetic field.
• the composition can take a state preventing any further change of orientation of the magnetic bodies under the effect of a magnetic field after a given drying time. This is for example the case of a nail polish.
• the orientation of the magnetic bodies can still, in some cases, be changed at any time, especially when the composition does not dry or has a very long drying time. This may be the case for example of a foundation.
• Magnetic bodies can come in many forms. MAGNETIC BODIES The expression “magnetic bodies” must not be understood in a limiting manner and covers particles, fibers or agglomerates of particles and / or fibers, of any shape, presenting a non-zero magnetic susceptibility.
• the concentration of magnetic substances in the composition is, for example, between about 0.05% and about 50% by weight, especially between about 0.1% and about 40% by weight, more preferably between about 1% and about 30% by weight. .
• the applied composition may comprise magnetic fibers or other aspherical bodies, such as particle or fiber chains.
• the magnetic bodies do not exhibit remanent magnetization in the absence of a magnetic field.
• the magnetic bodies may comprise any magnetic material having a sensitivity to the lines of a magnetic field, whether this field is produced by a permanent magnet or derived from an induction, this material being for example chosen from nickel, cobalt, iron , their alloys and oxides, especially Fe 3 O 4 , and also gadolinium, terbium, dysprosium, erbium, their alloys and oxides.
• the magnetic material may be of the "soft” or "hard” type.
• the magnetic material may in particular be soft iron.
• the magnetic bodies may or may not have a multilayer structure, comprising at least one layer of a magnetic material, such as for example iron, nickel, cobalt, their alloys and oxides, especially Fe 3 O 4 .
• the magnetic bodies are preferably aspherical, having for example an elongate shape. Thus, when these bodies are subjected to the magnetic field, they tend to orient themselves with their longitudinal axis in the alignment of the field lines, and undergo a change of orientation which results in a change of appearance of the composition.
• the magnetic bodies are substantially spherical particles, preferably their appearance is inhomogeneous, so that a change of orientation induces a change of appearance.
• the size of the bodies is for example between 1 nm and 10 mm, better between 10 nm and 5 mm, better still between 100 nm and 1 mm, for example between 0.5 ⁇ m and 300 ⁇ m or 1 ⁇ m and 150 ⁇ m.
• the dimension is that given by the statistical distribution to half of the population, called D50.
• the particles are particles not having an elongate shape or having an elongated shape with a relatively small form factor, the particle size is for example less than 1 mm.
• Magnetic bodies are, for example, magnetic pigments. Magnetic pigments
• Pigments having magnetic properties are, for example, 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) from MERCK or FLAMENCO TWILIGHT RED, FLAMENCO TWILIGHT GREEN, FLAMENCO TWILIGHT GOLD, TWILIGHT BLUE FLAMENCO, TIMICA NU ANTIQUE SILVER 110 AB, TIMICA NU ANTIQUE GOLD 212 GB, TIMICA NU-ANTIQUE COPPER 340 AB, ANCIENT TIMICA NU BRONZE 240 AB, CLOISONNE NU ANTI
• a magnetic pigment that may enter into the formulation of the composition, mention may be made of black iron oxide particles, for example those marketed under the name SICOVIT black El 72 by the company BASF.
• the magnetic pigments may also comprise metal iron, in particular passive soft iron, for example obtained from carbonyl iron by implementing the process described in US Pat. No. 6,589,331, the contents of which are incorporated by reference. These particles may comprise a layer of a surface oxide. Soft-iron based particles are sold in particular under the name STAPA ® WM IRON VP 041040 by ECKART. Magnetic fibers
• fibers refers to generally elongate bodies, having for example a form factor ranging from 3.5 to 2500 or from 5 to 500, for example from 5 to 150.
• the form factor is defined by the ratio L / Where L is the length of the fiber and D is the diameter of the circle in which the largest cross-section of the fiber is inscribed.
• the cross section of the fibers may be, for example, in a circle with a diameter ranging from 2 nm to 500 ⁇ m, for example ranging from 100 nm to 100 ⁇ m, or even from 1 ⁇ m to 50 ⁇ m.
• the fibers may have, for example, a length ranging from 1 ⁇ m to 10 mm, for example from 0.1 mm to 5 mm, or even from 0.3 mm to 3.5 mm.
• the fibers may have a mass ranging, for example, from 0.15 to 30 denier (mass per gram per 9 km of yarn), for example from 0.18 to 18 denier.
• the cross-sectional shape of the fibers may be arbitrary, for example circular or polygonal, in particular square, hexagonal or octagonal.
• the composition may comprise solid or hollow fibers, independent or interconnected, for example braided.
• the composition may comprise fibers having blunt and / or rounded ends, for example by polishing.
• the fibers may not have their shape substantially modified when they are introduced into the composition, being for example initially rectilinear and sufficiently rigid to retain their shape.
• the fibers may have a flexibility allowing them to deform substantially within the composition.
• the fibers may comprise a non-zero content, up to 100%, of a magnetic material chosen from soft magnetic materials, hard magnetic materials, especially based on iron, zinc, nickel, cobalt or manganese and their alloys and oxides, in particular Fe 3 O 4 , rare earths, barium sulphate, silicon iron alloys, optionally loaded with molybdenum, Cu 2 MnAl, MnBi, or a mixture thereof, this list n not being limiting.
• a magnetic material chosen from soft magnetic materials, hard magnetic materials, especially based on iron, zinc, nickel, cobalt or manganese and their alloys and oxides, in particular Fe 3 O 4 , rare earths, barium sulphate, silicon iron alloys, optionally loaded with molybdenum, Cu 2 MnAl, MnBi, or a mixture thereof, this list n not being limiting.
• the composition comprises fibers containing magnetic particles
• the latter may be present for example at least on the surface of the fiber, or even on the surface of the fibers only, inside the fiber alone or else be dispersed within the fiber substantially homogeneously.
• the fibers may comprise, for example, a non-magnetic core with a plurality of magnetic particles on its surface.
• the fibers may further comprise a synthetic matrix containing a plurality of magnetic grains dispersed therein.
• a synthetic material filled with magnetic particles may itself be coated with a non-magnetic bark.
• Such bark constitutes for example an insulating barrier or the magnetic materials of the ambient medium and / or can bring color.
• the fibers may comprise a monolithic magnetic core and be coated with a non-magnetic bark, or it may be the opposite.
• the composition may comprise fibers made by extrusion or coextrusion of one or more polymeric materials, in particular thermoplastics and / or elastomers. One of the extruded materials may contain a charge of dispersed magnetic particles.
• the fiber may comprise a synthetic material chosen from polyamides, PET, acetates, polyolefins, especially PE or PP, PVC, amide polyester block, plasticized Rilsan ® , elastomers, in particular polyester elastomers, PE elastomers, silicone elastomers, elastomers of nitrile or a mixture of these materials, this list not being limiting.
• the composition may contain composite fibers comprising a magnetic core at least partially coated with at least one non-magnetic, synthetic or natural material.
• the coating of the magnetic core can be done for example by coextrusion, around the heart, of a bark made of a non-magnetic material.
• the coating of the core can still be performed differently, for example by in situ polymerization.
• the core may be monolithic or have a charge of magnetic grains dispersed in a matrix.
• the composition may also contain composite fibers obtained by coating with a synthetic material, loaded with magnetic particles, a non-magnetic, synthetic or natural core, the core being composed for example of a wood fiber, rayon, polyamide, a plant material, polyolefin, especially polyethylene, nylon ® , polyimide-amide, aramid, this list is not limiting.
• the composition may further comprise magnetic composite particles, in particular a magnetic latex.
• a magnetic composite particle is a composite material consisting of an organic or inorganic matrix and magnetic grains.
• the magnetic composite particles may thus comprise on their surface and / or within them grains of a magnetic material.
• the composite particles may consist of a magnetic core coated with an organic or mineral matrix, or vice versa.
• the magnetic composite particles comprise for example one of the aforementioned magnetic materials.
• the size of the magnetic composite particles is for example between 1 nm and 1 mm, better between 100 nm and 500 ⁇ m, better still between 500 nm and 100 ⁇ m.
• dimension is meant the dimension given by the statistical size distribution at half of the population, called D50.
• the company KISKER markets composite magnetic particles with a mineral matrix, composed of silica.
• the companies DYNAL, SERADYN, ESTAPOR and ADEMTECH propose composite magnetic particles with an organic matrix that can also be used in the invention. More specifically, the company ESTAPOR markets under the reference
• Ml -070/60 magnetic latices consisting of ferrite grains uniformly distributed in a polystyrene matrix, this latex comprising 65% iron oxide, the average diameter of the polystyrene particles being 890 nm and the dry matter content by mass of 10%.
• the composition P may comprise a ferrofluid, that is to say a stable colloidal suspension of magnetic particles, especially magnetic nanoparticles.
• the particles of a size for example of the order of a few tens of nanometers, are dispersed in a solvent (water, oil, organic solvent), either with the aid of a surfactant or a dispersing agent, or by electrostatic interactions.
• Ferrofluids are for example prepared by grinding ferrites or other magnetic particles until nanoparticles are obtained which are then dispersed in a fluid containing a surfactant, which is adsorbed on the particles and stabilizes them, or by precipitation in a basic medium. a solution of metal ions.
• Each particle of the ferrofluid has a magnetic moment determined by the size of the particle and the nature of the magnetic material. Under the action of a magnetic field, the magnetic moments of the particles tend to align along the field lines, with the appearance of a non-zero magnetization in the liquid. If the field is canceled, there is no hysteresis and the magnetization vanishes.
• ferrofluid also includes an emulsion of ferrofluid droplets in a solvent. Each drop then 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 suspended in the ferrofluid is for example between 1 nm and 10 ⁇ m, better between 1 nm and 1 ⁇ m, better still between 1 nm and 100 nm.
• dimension is meant the dimension given by the statistical size distribution at half of the population, called D50.
• WHKS 1S9 (A, B or C), which is a ferrofluid based on water containing magnetite (Fe 3 O 4 ), having particles of 10 nm in diameter.
• WHJSl (A, B or C), which is a ferrofluid based on iso-paraffin and magnetite particles (Fe 3 O 4 ) 10 nm in diameter.
• BKS25_dextran which is a dextran-stabilized aqueous base ferrofluid having magnetite particles (Fe 3 O 4 ) of 9 nm in diameter.
• the composition may comprise agglomerates of particles or fibers whose largest dimension, for example the length, is for example between 1 nm and 10 mm, for example between 10 nm and 5 mm, or between 100 nm and 1 mm, or between 0.5 ⁇ m and 3.5 mm, for example between 1 ⁇ m and 150 ⁇ m. Dimension refers to that given by the statistical size distribution at half of the population, called D50.
• Magnetic particle chains can be obtained for example by assembling colloidal magnetic particles, as described in the publications Permanently linked monodisperse paramagnetic chains, EM Furst, C. Suzuki, M.
• the dimensions of the magnetic chains can meet the same conditions as the magnetic fibers.
• These particles may be of any shape, for example platelet or globular, in particular spherical, elongated or not, with the appropriate form factor important, and may or may not have a non-zero magnetic susceptibility, related to the presence of a magnetic material.
• the metal-reflecting particles When the metal-reflecting particles are magnetic, they preferably have a flattened shape so that a change in their orientation within the composition induces a change in appearance.
• the metal reflection particles comprise for example at least one surface-conducting layer of electricity, formed of at least one metal, optionally doped.
• the metal reflection particles may have at least one protective layer on the surface sufficiently transparent to keep the particle the desired metal reflection effect.
• Reflective particles with metallic reflection may have a multilayer or non-multilayer structure and, in the case of a multilayer structure, comprise at least one layer of a metal or alloy, possibly doped.
• the reflective particles with metal reflection do not have a multilayer structure, they can be composed for example of at least one metal or metal alloy, optionally doped.
• the metal-reflecting particles may for example comprise a natural or synthetic substrate, in particular a synthetic substrate at least partially coated with at least one layer of at least one metal or alloy. This layer is for example an outer layer of the structure.
• the substrate may be monomaterial, multimaterial, organic and / or inorganic.
• the substrate may be chosen from glasses, ceramics, graphite, metal oxides, aluminas, silicas, silicates, in particular aluminosilicates and borosilicates, synthetic mica and their mixtures. being not limiting.
• reflective particles comprising a mineral substrate coated with a metal layer
• particles comprising a borosilicate substrate coated with silver Particles with platelet-coated silver-coated glass substrate are sold under the name MICROGLAS S METASHINE REFSX 2025 PS by the company TOYAL.
• Particles with a glass substrate coated with nickel / chromium / molybdenum alloy are sold under the name CRYSTAL STAR GF 550, GF 2525 by this same company.
• the reflective particles with a metallic reflection can reflect the visible spectrum in a substantially uniform manner, as is the case for example with particles coated with a metal such as silver or aluminum, or not, which can then lead to example to a metallic reflection having a non-neutral tone, yellow, pink, red, bronze, orange, brown, gold and / or copper, depending on the nature of the surface metal compound, for example.
• Reflective particles with metallic reflection may be present in the composition at a content ranging from 0.5% to 60% relative to the total weight of the first composition, in particular from 1% to 30% by weight, for example from 3% to 10% by weight.
• composition containing the magnetic bodies may comprise at least one diffractive pigment.
• the term "diffractive pigment” denotes a pigment capable of producing a color variation according to the angle of observation when illuminated by white light, because of the presence of a structure which diffracts the light. Such a pigment is still sometimes called a holographic or rainbow pigment.
• a diffractive pigment may comprise a diffraction grating, capable for example of diffracting in defined directions an incident monochromatic light ray.
• the diffraction grating may comprise a periodic pattern, in particular a line, the distance between two adjacent patterns being of the same order of magnitude as the wavelength of the incident light.
• the diffraction grating When the incident light is polychromatic, the diffraction grating will separate the different spectral components of the light and produce a rainbow effect.
• the diffractive pigment may be made with patterns having different profiles, including triangular, symmetrical or not, crenellated, constant width or not, sinusoidal, staircase.
• the spatial frequency of the network and the depth of the patterns will be chosen according to the degree of separation of the different orders desired.
• the frequency can vary for example between 500 and 3000 lines per mm.
• the particles of the diffractive pigment each have a flattened shape, and in particular are platelet-shaped.
• the same pigment particle may comprise two crossed diffraction gratings, perpendicular or not, of the same linearization or not.
• the diffractive pigment may have a multilayer structure comprising a layer of a reflective material, covered at least on one side with a layer of a dielectric material.
• the dielectric material may then be chosen for example 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 their associations .
• the reflective material may be chosen for example from metals and their alloys and also from non-metallic reflective materials. Among the metals that can be used, there may be mentioned Al, Ag, Cu, Au, Pt, Sn, Ti, Pd, Ni, Co, Rd, Nb,
• the diffractive pigment may alone constitute the diffractive pigment which will then be monolayer.
• the diffractive pigment may comprise a multilayer structure comprising a core of a dielectric material covered with a reflective layer at least on one side, or even completely encapsulating the core.
• a layer of a dielectric material may also cover the reflective layer (s).
• the dielectric material used is then preferably inorganic, and may be chosen for example from metal fluorides, metal oxides, metal sulfides, metal nitrides, metal carbides and their combinations.
• the dielectric material may be in the crystalline, semicrystalline or amorphous state.
• the dielectric material in this configuration, may for example be chosen 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-like carbons and combinations thereof.
• the diffractive pigment may be composed of a preformed dielectric or ceramic material such as a natural lamella mineral, for example peroskovite mica or talc, or synthetic lamellae formed from glass, alumina, SiO 2 , carbon, iron oxide / mica, mica coated with BN, BC, graphite, bismuth oxychloride, and combinations thereof.
• a natural lamella mineral for example peroskovite mica or talc
• synthetic lamellae formed from glass, alumina, SiO 2 , carbon, iron oxide / mica, mica coated with BN, BC, graphite, bismuth oxychloride, and combinations thereof.
• Such materials may include silicone, metal suicides, semiconductor materials formed from Group III, IV and V elements, metals having a centered cubic crystal structure, cermet compositions or materials, semi-conductors -conductors, and their varied associations.
• the diffractive pigment used may in particular be chosen from those described in US patent application US 2003/0031870 published on February 13, 2003.
• a diffractive pigment may comprise, for example, the following structure:
• MgF 2 / Al / MgF 2 a diffractive pigment having this structure being marketed under the name SPECTRAFLAIR 1400 Pigment Silver by the company FLEX PRODUCTS, or SPECTRAFLAIR 1400 Pigment Silver FG.
• the proportion by weight of the MgF 2 may be between 80 and 95% of the total weight of the pigment.
• Other diffracting pigments are marketed under the names
• Metalure ® Prismatic by ECKART ® .
• Other possible structures are Fe / Al / Fe or Al / Fe / Al, which have magnetic susceptibility or zero.
• the amount of diffractive pigment may vary, by weight relative to the total weight of the first composition, for example from 0.1 to 5%.
• the size of the diffractive pigment may be for example between 5 and
• 200 microns better between 5 and 100 microns, for example between 5 and 30 microns.
• the thickness of the diffractive pigment particles may be less than or equal to 3 ⁇ m, more preferably 2 ⁇ m, for example of the order of 1 ⁇ m.
• composition may comprise at least one coloring agent producing light by absorption of at least part of the visible spectrum.
• Such a coloring agent producing a color by an absorption phenomenon may consist of a magnetic or non-magnetic, organic or inorganic or hybrid pigment comprising both organic matter and inorganic material.
• the coloring agent may be a particulate compound or not.
• the particles of the same magnetic pigment constitute both the coloring agent producing the color by an absorption phenomenon and the magnetic bodies.
• the coloring agent comprises a dye
• it may be chosen from liposoluble and water-soluble dyes.
• the liposoluble dyes are, for example, Sudan red, DC Red 17, DC Green 6, ⁇ -carotene, soybean oil, Sudan brown, DC Yellow 11, DC Violet 2, orange DC 5, yellow quinoline.
• the water-soluble dyes are, for example, beet juice and methylene blue.
• the dyes may for example represent from 0.1 to 20% of the weight of the first or second composition, or even from 0.1 to 6%, when present.
• the coloring agent may also be a lacquer or an organic pigment chosen from the materials below and their mixtures:
• organic pigments mention may be made of those known under the following names: 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.
• the coloring agent can be an organic lacquer supported by an organic support such as rosin or aluminum benzoate, for example.
• the composition may comprise a composite pigment having a core at least partially coated with a bark.
• Composite pigments having a core at least partially coated with a bark.
• a composite pigment may be composed in particular of particles comprising: an inorganic core, at least one at least partial coating of at least one organic dyestuff.
• At least one binder can advantageously contribute to the fixing of the organic dyestuff on the inorganic nucleus.
• the composite pigment particles may have various shapes. These particles may in particular be platelet-shaped or globular, in particular spherical, and may be hollow or solid. "Platelet-shaped” means particles whose ratio of the greatest dimension to the thickness is greater than or equal to
• a composite pigment may have, for example, a specific surface area of between 1 and 1000 m 2 / g, in particular between 10 and 600 m 2 / g approximately, and in particular between 20 and 400 m 2 / g approximately.
• the specific surface is the value measured by the BET method.
• the mass proportion of the core may exceed 50% relative to the total weight of the composite pigment, for example going from 50% to 70%, for example from 60% to 70%.
• the composite pigment may be different from an interference pigment as described, for example, in US Pat. No. 6,428,773.
• An interference pigment comprises, for example, several layers of constant thicknesses of selected materials in order to be able to produce optical interferences.
• the saturation C * of the composite pigment may be greater than or equal to 30, measured according to the protocol below.
• the pure composite pigment is compacted in a rectangular cup having dimensions of 2 x 1.5 cm and a depth of 3 mm, applying a pressure of 100 bar.
• the values a * and b * of the compacted pigment are measured with a spectrophotometer MESfOLTA 3700d, in specular mode excluded, under illuminant D65, average opening.
• the inorganic nucleus may be of any form suitable for fixing particles of organic dyestuff, for example spherical, globular, granular, polyhedral, acicular, fusiform, flattened in the form of a flake, grain of rice, flake, as well as a combination of these forms, this list not being limiting.
• the ratio of the largest dimension of the core to its smallest dimension is between 1 and 50.
• the inorganic core may have an average size of between about 1 nm and about 100 nm, or between about 5 nm and about 75 nm. nm, for example between about 10 nm and about 50 nm, especially 20 or 25 nm.
• average size is meant the dimension given by the statistical size distribution at half of the population, called D50.
• the average size may be a number average size determined by image analysis (electron microscopy).
• the inorganic core may have a refractive index greater than or equal to 2, or even greater than or equal to 2.1, for example greater than or equal to 2.2.
• the inorganic nucleus may be made of a magnetic material or not selected from the nonlimiting list comprising metal salts and metal oxides, in particular oxides of titanium, zirconium, cerium, zinc, iron, ferric blue, aluminum and chromium, aluminas, glasses, ceramics, graphite, silicas, silicates, especially aluminosilicates and borosilicates, synthetic mica, and mixtures thereof.
• metal salts and metal oxides in particular oxides of titanium, zirconium, cerium, zinc, iron, ferric blue, aluminum and chromium, aluminas, glasses, ceramics, graphite, silicas, silicates, especially aluminosilicates and borosilicates, synthetic mica, and mixtures thereof.
• titanium in particular TiO 2 , iron, especially Fe 2 O 3 , cerium, zinc and aluminum silicates, especially aluminosilicates and borosilicates are particularly suitable.
• the inorganic nucleus may have a specific surface area, measured by the BET method, for example between about 1 m 2 / g and about 1000 m 2 / g, more preferably between about 10 m 2 / g and about 600 m 2 / g, example between about 20 m 2 / g and about 400 m 2 / g.
• the inorganic core can be colored, if necessary.
• the organic dyestuff may comprise, for example, at least one organic pigment, for example at least one organic lacquer.
• the organic dyestuff may be chosen for example from particulate compounds which are insoluble in the physiologically acceptable medium of the composition.
• the organic dyestuff may comprise, for example, pigments, for example organic lakes or other organic dyestuffs, which may be chosen from the compounds below and their mixtures:
• organic pigments of azo, anthraquinone, indigo, xanthene, pyrenic, quinoline, triphenylmethane and fluoran dyes are organic pigments of azo, anthraquinone, indigo, xanthene, pyrenic, quinoline, triphenylmethane and fluoran dyes,
• organic pigments mention may be made of those known under the following names: 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.
• the organic dyestuff may comprise an organic lacquer supported by an organic support such as rosin or aluminum benzoate, for example.
• the mass proportion of organic dyestuff may range from about 10 parts to about 500 parts by weight per 100 parts of the inorganic core, or from about 20 parts to about 250 parts by weight, for example, from about 40 parts to about 125 parts by weight. weight per 100 parts of the inorganic nucleus.
• the total content of organic dyestuff of the composition may be, for example, less than 10%, relative to the total weight of the composition.
• the proportion of the organic dyestuff may exceed 30% relative to the total weight of the composite pigment, for example from 30 to 50%, for example from 30 to 40%.
• the binder of the composite pigment can be of any type since it allows the organic dyestuff to adhere to the surface of the inorganic core.
• the binder can in particular be chosen from a nonlimiting list comprising silicone compounds, polymeric, oligomeric or similar compounds, and in particular from organosilanes, fluoroalkyl organosilanes and polysiloxanes, for example polymethylhydrogenosiloxane, as well as various coupling agents, such as coupling agents based on silanes, titanates, aluminates, zirconates and mixtures thereof.
• the silicone compound may be chosen from a non-limiting list comprising in particular:
• organosilanes (1) obtained from alkoxy silanes, polysiloxanes (2) modified or non-selected from a non-limiting list comprising: modified polysiloxanes (2A) comprising at least one radical chosen from, in particular, polyethers, polyesters and epoxy compounds (they will be called "modified polysiloxanes”),
• fluoroalkylated organosilane compounds (3) obtained from fluoroalkylsilanes.
• the organosilane compounds (1) can be obtained from alkoxysilane compounds represented by the formula (I):
• R 1 represents C 6 H 5 -, (CH 3 ) 2 CH-CH 2 - or a radical of type C b H 21 1 - (where b varies from 1 to 18), - X represents CH 3 O- or C 2 H 5 O-, and a varies from 0 to 3.
• alkoxysilane compounds may include selected alkoxysilanes from: methyltriethoxysilane, dimethyldiethoxysilane, phenyltriethoxysilane, diphenyldiethoxysilane, methyltrimethoxysilane, dimethyldimethoxysilane, phenyltrimethoxysilane, diphenyldimethoxysilane, Fisobutyltriméthoxysilane the decyltrimethoxysilane and the like, in particular from methyltriethoxysilane, phenyltriethoxysilane, methyltrimethoxysilane, dimethyldimethoxysilane, isobutyltrimethoxysilane, and most preferably methyltriethoxysilane, methyltrimethoxysilane, phenyltriethoxysilane.
• the polysiloxanes (2) may in particular satisfy formula (II):
• R 2 is H- or CH 3 - and d is from 15 to 450.
• modified polysiloxanes (2A) can in particular correspond to the following formulas:
• R 3 is - (CH 2) h-;
• R 4 represents - (CH 2 ) I-CH 3 ;
• R 6 represents - (CH 2) k - CH 3 ; g and h varying independently from 1 to 15; j and k varying independently from 0 to 15; e ranging from 1 to 50 and f varying from 1 to 300,
• R 7 , R 8 and R 9 independently represent - (CH 2 ) q -;
• R 11 represents - (CH 2 ) S - CH 3 ; n and q varying independently from 1 to 15, r and s varying independently from 0 to 15; e ranging from 1 to 50 and f varying from 1 to 300,
• R 1 represents - (CH 2 ) V-; v ranging from 1 to 15; t ranging from 1 to 50 and u ranging from 1 to 300; or their mixtures.
• modified polysiloxanes (2A) modified polysiloxanes bearing polyethers of formula (III) are preferred.
• the modified polysiloxanes on the terminal part (2B) can satisfy the formula
• R 13 and R 14 may represent -OH, R 16 -OH or R 17 -COOH, independently of one another;
• R 15 is -CH 3 or -C 6 H 5 ;
• R 16 and R 17 are - (CH 2 ) V-;
• y ranging from 1 to 15;
• w ranging from 1 to 200 and x varying from 0 to 100.
• the fluoroalkylated organosilane compounds (3) can be obtained from fluoroalkyl silanes represented by the formula (VII): SiX 4-8 (VU) in which
• R 1 l 8 ⁇ represents CH 3 -, C 2 H 5 -, CH 3 O- or C 2 H 5 O-
• X represents CH 3 O- or C 2 H 5 O-
• Z ranges from 0 to 15 and a varies from 0 to 3.
• the fluoroalkylsilanes may be selected in a non limiting list trifluoropropyltrimethoxysilane, tridecafluorooctyltrimethoxysilane, heptadecafluorodecyltrimethoxysilane, rheptadécafluorodécylméthyldiméthoxysilane, trifluoropropyltriethoxysilane, tridecafluorooctyltriethoxysilane, heptadecafluorodecyltriethoxysilane, heptadecafluorodecylmethyldiethoxysilane and the like, in particular trifluoropropyltrimethoxysilane, tridecafluorooctyltrimethoxysilane and heptadecafluorodecyltrimethoxysilane, and even more preferably trifluoropropyltrimeth
• the coupling agents based on silane may be chosen from a nonlimiting list comprising in particular vinyltrimethoxysilane, vinyltriethoxysilane, ⁇ -aminopropyltriethoxysilane, ⁇ -flycidoxypropyltrimethoxysilane, ⁇ -mercaptopropyltrimethoxysilane, ⁇ -methacryloxypropyltrimethoxysilane, N- ⁇ (aminoethyl ) - ⁇ -aminopropyltrimethoxysilane, ⁇ -glycidoxypropylmethyldimethoxysilane, ⁇ -chloropropyltrimethoxysilane and the like.
• the titanate coupling agents may be chosen from the list comprising isopropylstearoyl titanate, isopropyltris titanate (dioctylpyrophosphate), isopropyltri (N-aminoethylaminoethyl) titanate, tetraoctylbis titanate (ditridecylphosphate), 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 chosen from acetoalkoxyaluminum diisopropylate, aluminum diisopropoxymonoethylacetoacetate, aluminum triethylacetoacetate, aluminum triacetylacetonate and the like.
• the zirconate coupling agents may be chosen from a list comprising, in particular, zirconium tetrakisacetylacetonate, zirconium dibutoxybisacetylacetonate, zirconium tetrakisethylacetoacetate, zirconium tributoxymonoethylacetoacetate, zirconium tributoxyacetylacetonate and the like.
• the compounds serving as binder may in particular have a molar mass which may vary between 300 and 100,000.
• the binder is preferably in a liquid state or soluble in water or in different solvents.
• the amount of binder can vary from 0.01 to 15%, especially from 0.02 to 12.5% and in particular from 0.03 to 10% by weight (calculated with respect to C or Si) relative to the weight of the particles comprising the core and the binder.
• the relative proportion of binder may be less than or equal to 5%, for example less than or equal to 3%, relative to the total weight of the composite pigment.
• the composite pigment may be prepared by any suitable method, for example a mechano-chemical process or a solution precipitation process, with dissolution of the organic coloring material and precipitation on the surface of the core.
• a binder can be used or not.
• a process comprising mechanical mixing of an organic pigment and the inorganic core is preferred.
• a binder may be added and mixed with the inorganic core prior to introduction of the organic coloring material.
• the composite pigment can be produced for example by one of the methods described in European Patent Applications EP 1 184 426 and EP 1 217 046, the contents of which are incorporated herein by reference, advantageously by the method described in EP 1
• the particles intended to form the inorganic core are first mixed with the binder.
• the binder adheres uniformly to the surface of the inorganic core, it is preferable to pass these particles beforehand into a mill, so as to de-agglomerate them.
• the mixing and stirring conditions are chosen so that the core is uniformly covered with binder. These conditions can be controlled so that the linear load is between 19.6 and 19160 N / cm, in particular between 98 and 14170 N / cm and better still between 147 and 980 N / cm; the treatment time is in particular between 5 minutes and 24 hours and better from 10 minutes to 20 hours; the speed of rotation can be between 2 and 1000 rpm, in particular between 5 and 1000 rpm and better still between 10 and 800 rpm.
• the organic coloring material is added and mixed with agitation to adhere to the binder layer.
• the addition methods may be, for example, a large amount, continuously, or in small amounts.
• Mixing and stirring, whether inorganic cores with the binder or organic dyestuff with binder-bound inorganic cores, can be performed using an apparatus that can apply spatular cutting and / or compression force to the mixture. of powders.
• Such devices are for example wheeled kneaders, blades and the like. Wheel kneaders are particularly suitable. A list of suitable devices is given in the application EP 1 184 426 A2.
• JP 3286463 Another method of manufacturing a composite pigment is disclosed in JP 3286463, which discloses a solution precipitation process.
• the organic dyestuff is dissolved in ethanol, the inorganic nuclei are then dispersed in this ethanolic solution. Then, an aqueous alkaline solution of sodium or potassium carbonate is added slowly to these mixtures, then, slowly, an ethanolic solution of calcium chloride is added, all with stirring.
• the composition may comprise at least one interferential or diffractive pigment, and / or reflective particles.
• the first composition comprises at least one goniochromatic coloring agent that makes it possible to observe a color change as a function of the angle of observation.
• This goniochromatic coloring agent may or may not be magnetic.
• the first composition comprises magnetic particles of a certain color and a non-magnetic goniochromatic coloring agent, the latter may be chosen so that the color path substantially passes through the color. magnetic particles.
• This may for example make it more difficult to detect magnetic particles in the absence of an orientation thereof under the effect of a magnetic field. This may also make it possible to reveal the pattern induced by the orientation of the magnetic particles only under certain conditions of observation and / or illumination of the masked support, which can make it possible to create particularly attractive effects of appearance and pattern layout.
• composition containing the magnetic bodies may contain at least one goniochromatic coloring agent, which may have magnetic properties, if any.
• goniochromatic coloring agent denotes a coloring agent which makes it possible, when the composition is spread on a support, to obtain a color path in the a * b * plane of the color space.
• the color path can be measured, for example by means of an INSTRUMENT SYSTEMS spectrogonioreflectometer and GON reference.
• the goniochromatic coloring agent may be chosen, for example, from interferential multilayer structures and liquid crystal coloring agents.
• this may comprise for example at least two layers, each layer being made for example from at least one material selected from the group consisting of 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, HiO 2 , ZrO 2 , CeO 2 ,
• the multilayer structure may or may not have, with respect to a central layer, a symmetry at the chemical nature of the stacked layers. Depending on the thickness and nature of the different layers, different effects are obtained.
• Examples of symmetrical multilayer interference structures are for example the following structures: Fe 2 O 3 / SiO 2 / Fe 2 O 3 / SiO 2 / Fe 2 O 3 , a pigment having this structure being marketed under the name SICOPEARL by the company BASF; MoS2 / SiO2 / mica-oxide / SiO 2 / MoS2; Fe 2 O 3 / SiO 2 / mica-oxide / SiO 2 / Fe 2 O 3 ; Ti (VSi (VTiO 2 and TKVAl 2 O 3 / TiO 2, pigments having these structures being sold under the name XIRONA by the company Merck (Darmstadt) .
• the liquid crystal coloring agents comprise, for example, silicones or cellulose ethers on which are grafted mesomorphic groups.
• liquid crystal goniochromatic particles that may be used include those sold by the Chenix company and those sold under the name HELICONE ® HC by the company Wacker.
• goniochromatic coloring agent one can still use some nacres, pigments having effects on a synthetic substrate, in particular an alumina-like substrate, silica, borosilicate, iron oxide, aluminum, or interferential holographic flakes from a polyterephthalate film.
• the material may further comprise dispersed goniochromatic fibers.
• Such fibers may have a length less than 80 microns, for example. nacres
• the nacres may be chosen from pearlescent pigments such as iron oxide-coated titanium mica, bismuth oxychloride-coated mica, titanium mica coated with chromium oxide, titanium mica coated with an organic dye. especially of the aforementioned type as well as pearlescent pigments based on bismuth oxychloride. It may also be mica particles on the surface of which are superimposed at least two successive layers of metal oxides and / or organic dyestuffs.
• the nacres may more particularly have a color or a yellow, pink, red, bronze, orange, brown, gold and / or coppery reflection.
• nacres that can be introduced in the first composition
• the composition may also comprise reflective particles chosen from particles with a synthetic substrate at least partially coated with at least one layer of at least one metal oxide, chosen, for example, from oxides titanium, in particular TiO 2 , iron in particular Fe 2 O 3 , tin, 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, HiO 2 , ZrO 2 , CeO 2 , Nb 2 O 5 , Ta 2 O 5 , MoS 2 and mixtures thereof.
• particles comprising a synthetic mica substrate coated with titanium dioxide, or particles of coated glass of brown iron oxide, of titanium oxide, of tin oxide or a mixture thereof, such as those sold under the name REFLECKS ® by the company
• the composition containing the magnetic bodies comprises a physiologically acceptable medium.
• physiologically acceptable medium means a non-toxic medium that can be applied to the skin, integuments or lips of human beings.
• the physiologically acceptable medium is generally adapted to the nature of the support on which the composition is to be applied and to the form in which the composition is packaged.
• composition may comprise other ingredients than those described above, in particular at least one solvent, a fatty phase, a film-forming polymer and / or a dermatological or cosmetic active agent, in particular depending on the dosage form.
• composition containing the magnetic bodies may comprise at least one aqueous or organic solvent, in particular an organic volatile solvent.
• the first composition may advantageously comprise a volatile solvent, in particular a volatile organic solvent.
• volatile solvent is understood to mean a solvent which is liquid at ambient temperature, in particular having a non-zero vapor pressure, at ambient temperature and atmospheric pressure, in particular having a vapor pressure of from 0.degree. 13 Pa at 40,000 Pa (10 ⁇ 3 at 300 mm Hg), and preferably ranging from 1.3 Pa to 13 000 Pa (0.01 to 100 mm Hg), and preferably ranging from 1.3 Pa to 1300 Pa (0.01 to 10 mmHg).
• these solvents may be present in a content ranging from 0.1% to 99%, relative to the total weight of the composition concerned.
• the amount of solvent (s), in particular organic (s) will depend on the nature of the support on which the composition is intended to be applied.
• the first composition may comprise at least one volatile solvent consisting of a volatile oil.
• the oil can be a silicone oil or a hydrocarbon oil, or comprise a mixture of such oils.
• silicon oil means an oil comprising at least one silicon atom, and in particular at least one Si-O group.
• hydrocarbon-based oil means an oil containing mainly hydrogen and carbon atoms and optionally oxygen, nitrogen, sulfur and / or phosphorus atoms.
• the volatile hydrocarbon oils may be chosen from hydrocarbon-based oils having from 8 to 16 carbon atoms, and in particular branched alkanes containing
• C8-C16 also called isoparaffins
• isoparaffins such as isododecane (also called 2,2,4,4,6-pentamethylheptane), isodecane, isohexadecane, and for example the oils sold under the trade names of ISOPARS ® or PERMETHYLS ® .
• volatile oils for example volatile linear or cyclic silicone oils, in particular those having a viscosity of ⁇ 8 centistokes (8 ⁇ 10 -6 mVs), and especially having from 2 to 10 carbon atoms. silicon, and in particular from 2 to 7 silicon atoms, these silicones optionally comprising alkyl or alkoxy groups having from 1 to 10 carbon atoms.
• volatile silicone oil that may be used in the invention, mention may be made in particular of dimethicones of viscosity 5 and 6 cSt, octamethyl cyclotetrasiloxane, decamethylcyclopentasiloxane, dodecamethylcyclohexasiloxane, heptamethylhexyltrisiloxane, heptamethyloctyltrisiloxane and hexamethyl.
• disiloxane octamethyl trisiloxane
• decamethyl tetrasiloxane dodecamethyl pentasiloxane, and mixtures thereof.
• R represents an alkyl group comprising from 2 to 4 carbon atoms and one or more hydrogen atoms of which may be substituted by a fluorine or chlorine atom.
• oils of general formula (I) mention may be made of: 3-butyl 1,1,1, 3,5,5,5-heptamethyltrisiloxane, 3-propyl 1,1,1,3,5,5 , 5-heptamethyltrisiloxane, and 3-ethyl-1,1,1,5,5,5-heptamethyltrisiloxane, corresponding to the oils of formula (I) for which R is respectively a butyl group, a propyl group or a ethyl group.
• Fluorinated volatile oils such as nonafluoromethoxybutane or perfluoromethylcyclopentane and mixtures thereof can also be used.
• a composition according to the invention may comprise, for example, between 0.01% and 95% by weight of volatile oil, relative to the total weight of the composition, better still between 1% and 75% by weight.
• the composition may comprise at least one organic solvent chosen from the following list: ketones that are liquid at ambient temperature, such as methyl ethyl ketone, methyl isobutyl ketone, diisobutyl ketone, isophorone, cyclohexanone, acetone; alcohols which are liquid at room temperature, such as ethanol, isopropanol, diacetone alcohol, 2-butoxyethanol or cyclohexanol; glycols which are liquid at room temperature, such as ethylene glycol, propylene glycol, pentylene glycol, glycerol; propylene glycol ethers which are liquid at ambient temperature, such as propylene glycol monomethyl ether, propylene glycol monomethyl ether acetate or dipropylene glycol mono-butyl ether; short chain
• the composition may also comprise water or a mixture of water and hydrophilic organic solvents commonly used in cosmetics such as alcohols and in particular linear or branched lower monoalcohols having from 2 to 5 carbon atoms, such as ethanol, isopropanol or n-propanol, polyols such as glycerine, diglycerine, propylene glycol, sorbitol, penthylene glycol, polyethylene glycols.
• the first composition may further contain C 2 ethers and C 2 -C 4 hydrophilic aldehydes.
• the water or the mixture of water and hydrophilic organic solvents may be present in the first and / or second composition in a content ranging for example from 0% to 90%, especially 0.1% to 90% by weight, and preferably from 0% to 60% by weight, especially 0.1% to 60% by weight, relative to the total weight of the composition.
• the composition for example when it is intended to be applied to the lips or the eyelashes, may comprise a fatty phase and in particular at least one fatty substance that is liquid at room temperature (25 ° C.) and at atmospheric pressure (760 mm Hg). ) and / or a fat solid at room temperature such as waxes, pasty fatty substances, gums and mixtures thereof.
• the fatty phase may further contain lipophilic organic solvents.
• the composition may for example have a continuous fat phase, which may contain less than 5% water, especially less than 1% water relative to its total weight and in particular be in anhydrous form.
• liquid fatty substances at ambient temperature often called “oils”
• vegetable hydrocarbon-based oils such as liquid triglycerides of fatty acids with 4 to 10 carbon atoms, for example triglycerides of heptanoic or octanoic acids, or sunflower, corn, soybean, grape seed, sesame, apricot, macadamia, castor oil, avocado oils, caprylic / capric acid triglycerides, jojoba oil, shea butter , lanolin, acetylated lanolin; linear or branched hydrocarbons of mineral or synthetic origin, such as liquid paraffins and derivatives thereof, petroleum jelly, polydecenes, hydrogenated polyisobutene such as sesam; esters and synthetic ethers, in particular of fatty acids, for example purcellin oil, isopropyl myristate, 2-ethylhexyl palmitate, octyl-2-dodecyl stearate,
• the presence of an oily phase may impart gloss and have, for example, a refractive index of between 1.47 and 1.51, more preferably between 1.48 and 1.50.
• the refractive index is measured at room temperature (25 ° C), using a refractometer.
• the composition may comprise at least one structuring agent of the liquid fatty phase (formed by the volatile and non-volatile oils and / or organic solvents described above) chosen from waxes, semi-crystalline polymers, lipophilic gelling agents and mixtures thereof.
• the pasty fatty substances are generally hydrocarbon compounds with a melting point between 25 and 60 ° C., preferably between 30 and 45 ° C., and / or a hardness of between 0.001 and 0.5 MPa, preferably between 0.005 and 0.4 MPa, such as lanolins and their derivatives.
• the waxes may be solid at room temperature (25 ° C), reversible solid / liquid state change, having a melting temperature greater than 30 ° C up to 200 ° C, hardness greater than 0.5 MPa, and having in the solid state an anisotropic crystalline organization.
• the waxes may have a melting point greater than 25 ° C. and better still greater than 45 ° C.
• Waxes can be hydrocarbon-based, fluorinated and / or silicone and be of vegetable, mineral, animal and / or synthetic origin.
• waxes As useful waxes, mention may be made of beeswax, carnauba or candelilla wax, paraffin wax, microcrystalline waxes, ceresin or ozokerite; synthetic waxes such as polyethylene or Fischer Tropsch waxes, silicone waxes such as alkyl or alkoxy dimethicone having from 16 to 45 carbon atoms.
• the composition may contain from 0 to 50% by weight of waxes, relative to the total weight of the composition, or even from 1 to 30% by weight.
• the gums that can be used are generally high molecular weight polydimethylsiloxanes (PDMS) or cellulose gums or poly saccharides.
• PDMS polydimethylsiloxanes
• cellulose gums or poly saccharides are generally high molecular weight polydimethylsiloxanes (PDMS) or cellulose gums or poly saccharides.
• composition may also comprise, for example, a film-forming polymer, especially in the case of a mascara, a nail polish or a foundation.
• Frm-forming polymer means a polymer capable of forming, by itself or in the presence of an auxiliary film-forming agent, a continuous and adherent film on a support, in particular on keratin materials.
• film-forming polymers that may be used in the composition according to the invention, mention may be made, inter alia, of synthetic polymers, of radical type or of polycondensate type, polymers of natural origin, such as nitrocellulose or cellulose esters, and their mixtures .
• the radical-type film-forming polymers may in particular be vinyl polymers or copolymers, in particular acrylic polymers.
• the vinyl film-forming polymers may result from the polymerization of ethylenically unsaturated monomers having at least one acidic group and / or esters of these acidic monomers and / or amides of these acidic monomers, such as ⁇ , ⁇ -ethylenically unsaturated carboxylic acids, such as acrylic acid, methacrylic acid, crotonic acid, maleic acid, itaconic acid.
• ethylenically unsaturated monomers having at least one acidic group and / or esters of these acidic monomers and / or amides of these acidic monomers, such as ⁇ , ⁇ -ethylenically unsaturated carboxylic acids, such as acrylic acid, methacrylic acid, crotonic acid, maleic acid, itaconic acid.
• the vinyl film-forming polymers can also result from the homopolymerization or copolymerization of monomers chosen from vinyl esters such as vinyl acetate, vinyl neodecanoate, vinyl pivalate, vinyl benzoate and t-butyl benzoate. vinyl and styrene monomers such as styrene and alpha-methyl styrene.
• vinyl esters such as vinyl acetate, vinyl neodecanoate, vinyl pivalate, vinyl benzoate and t-butyl benzoate.
• vinyl and styrene monomers such as styrene and alpha-methyl styrene.
• film-forming polycondensates there may be mentioned polyurethanes, polyesters, polyesters amides, polyamides, and polyureas, this list not being limiting.
• the polymers of natural origin may be selected from shellac resin, sandarac gum, dammars, elemis, copal, cellulosic polymers, such as nitrocellulose, ethylcellulose or selected nitrocellulose esters. for example, cellulose acetate, cellulose acetate butyrate, cellulose acetate propionate, and mixtures thereof.
• the film-forming polymer may be present in the form of solid particles in aqueous or oily dispersion, generally known as latex or pseudo latex.
• the film-forming polymer may comprise one or more stable dispersions of generally spherical polymer particles of one or more polymers in a physiologically acceptable liquid fatty phase. These dispersions are usually called NAD
• Non-Aqueous Dispersion polymer as opposed to latexes which are aqueous polymer dispersions.
• These dispersions can in particular be in the form of polymer nanoparticles in stable dispersion in said fatty phase.
• the nanoparticles are preferably of a size between 5 and 600 nm.
• the techniques for preparing these dispersions are well known to those skilled in the art.
• Aqueous dispersions of film-forming polymer may be used include the acrylic dispersions sold under the names Neocryl XK-90 ®, Neocryl
• Neocryl A- e.g., Neocryl BT-62 ® 'Neocryl A-1079 ®, Neocryl
• Neorez R-981 ® CHEMICAL, DAITOSOL 5000 AD ® by the company DAITO KASEI KOGYO; or the aqueous dispersions of polyurethane sold under the names Neorez R-981 ®, Neorez R-974 ® by the company Avecia-Neoresins, Avalure UR-405 ®,
• AVALURE UR-410 ® AVALURE UR-425 ® , AVALURE UR-450 ® , SANCURE 875 ® ,
• HYDROMER sulfopolyesters sold under the trade name Eastman AQ by Eastman Chemical Products.
• the composition comprises at least a film-forming polymer which is a film-forming linear ethylenic block polymer.
• This polymer preferably comprises at least a first block and at least a second block having different glass transition temperatures (Tg), said first and second blocks being interconnected by an intermediate block comprising at least one constituent monomer of the first block and at least one constituent monomer of the second sequence.
• the first and second sequences and the block polymer are incompatible with each other.
• composition containing the magnetic bodies may comprise at least one charge, magnetic or not.
• Charges "Charge” means particles of any form, insoluble in the medium of the composition, regardless of the temperature at which the composition is manufactured.
• a filler can serve in particular to modify the rheology or the texture of the composition. The nature and quantity of the particles may depend on the desired mechanical properties and textures. Examples of fillers that may be mentioned include talc, mica, silica, kaolin, sericite, polyamide, polyolefin powders, for example polyethylene, polytetrafluoroethylene, polymethyl methacrylate , polyurethane, starch powders and silicone resin beads.
• the fillers may be intended to create, inter alia, a blur effect, especially in the case of a foundation, in order to hide skin imperfections.
• composition containing the magnetic bodies may also include an auxiliary film-forming agent promoting the formation of a film with the film-forming polymer.
• the composition may comprise at least one cosmetic or dermatological active agent.
• cosmetic, dermatological, hygienic or pharmaceutical active agents that can be used in the compositions of the invention, mention may be made of moisturizers (polyol as glycerine), vitamins (C, A, E, F, B, or PP), essential fatty acids, essential oils, ceramides, sphingolipids, liposoluble sunscreens or in the form of nano-particles, the specific active treatment skin (protective agents, anti-bacterial, anti-wrinkle ...), self-tanning.
• These active agents may be used for example at concentrations of 0 to 20% and especially 0.001 to 15% relative to the total weight of the composition.
• composition may also contain ingredients commonly used in cosmetics, such as, for example, thickeners, surfactants, trace elements, moisturizers, softeners, sequestering agents, perfumes, alkalizing or acidifying agents, preservatives, antioxidants , UV filters, dyes or mixtures thereof.
• ingredients commonly used in cosmetics such as, for example, thickeners, surfactants, trace elements, moisturizers, softeners, sequestering agents, perfumes, alkalizing or acidifying agents, preservatives, antioxidants , UV filters, dyes or mixtures thereof.
• composition according to the invention may comprise, depending on the type of application envisaged, the constituents conventionally used in the fields under consideration, which are present in an amount appropriate to the desired dosage form.
• Galenic forms may comprise, depending on the type of application envisaged, the constituents conventionally used in the fields under consideration, which are present in an amount appropriate to the desired dosage form.
• the composition can be in various forms, depending on its purpose.
• the composition may thus be in any galenical form normally used for topical application and especially in anhydrous form, in the form of an oily or aqueous solution, an oily or aqueous gel, an oil-in-water emulsion, water in water or oil, wax in water or water in wax, a multiple emulsion, an oil dispersion in water through vesicles at the oil / water interface.
• the composition may be in the form of a powder or a gel.
• the magnetic device may comprise a permanent magnet or an electromagnet, powered for example by at least one battery or accumulator. In the latter case, the magnetic device may comprise a switch for selectively supplying the electromagnet with electricity.
• the magnetic device can be arranged to create a magnetic field whose orientation varies over time.
• the device may for example comprise a motor for rotating the magnet.
• the magnetic device may comprise several solenoids arranged to generate, when fed sequentially with electricity, a rotating magnetic field.
• a rotating magnetic field may allow for example to obtain a pattern having a symmetry of revolution, for example a pattern giving the impression of a sphere in relief.
• the electromagnet (s) can be powered continuously or intermittently, at the user's choice.
• the magnetic device may be arranged in such a way that the electromagnet (s) may not be powered until the magnetic device is positioned correctly near the support coated with the first composition.
• the magnetic field is for example at least 50 mT, or even at least 0.2 T, or even at least 1 T (10,000 Gauss).
• the magnetic device may comprise a member making it possible to position it relative to the support on which the composition has been deposited. This may make it possible, for example, to prevent the magnetic device from accidentally coming into contact with the composition and / or to center the pattern produced on the region concerned.
• the magnetic device is secured to an applicator for applying the cosmetic composition. This can reduce the number of objects handled by the user and facilitate makeup.
• the magnetic device comprises a magnet mounted at a first end of a rod whose second end is connected to a gripping member of an applicator for the application of the cosmetic composition.
• the magnetic field can also be exerted by means of a magnetic structure, in particular a flexible structure, comprising an alternation of N and S poles.
• a magnetic structure in particular a flexible structure, comprising an alternation of N and S poles.
• Such a structure can make it possible, for example, to produce repetitive patterns on the first composition, for example stripes.
• kits for implementing the method as defined above comprising: a magnetic device for generating a magnetic field,
• magnetic bodies having non-zero magnetic susceptibility and moving under the effect of a magnetic field; at least one diffractive pigment, the magnetic device being able to create a magnetic field susceptible, when the keratinous materials covered with a deposit said composition is introduced into said magnetic field, to change the orientation and / or the position of the magnetic bodies within the deposit.
• the magnetic device may in particular be arranged to generate a magnetic field that is strong enough to be able to modify the orientation and / or the position of the magnetic bodies within the composition after application to a support such as the skin, the mucous membranes or the integuments, of way to change the appearance.
• the magnetic field is for example exercised shortly after the deposition, so as to change the appearance of the composition before drying thereof, when the first composition comprises a volatile solvent.
• the composition may be for example a nail polish, a foundation or a lipstick, and have the characteristics as defined above.
• the magnetic device may be as defined above.
• the kit may comprise a housing housing the first cosmetic composition and the magnetic device.
• the housing may comprise for example a plurality of magnets of different shapes to achieve different patterns.
• the kit may further comprise an additional cosmetic composition to be applied to the above-mentioned composition or to the support before applying it.
• FIG. schematically, an exemplary kit according to the invention
• - Figure 2 shows in axial section, schematic and partial, the magnetic device of Figure 1
• Figures 3 and 4 schematically illustrate the use of the kit
• FIG. 5 represents an example of a pattern that can be obtained by virtue of the invention
• FIG. 6 schematically represents a container containing an additional composition that can be applied to the support
• FIG. 7 represents, in isolation, schematically, another As an example of a magnetic device that can be used
• FIG. 8 schematically represents the magnetic device of FIG.
• FIGS. schematic of other examples of kits according to the invention
• Figure 11 illustrates the use of the kit of Figure 10
• Figure 12 shows in elevation and in isolation, schematically, an example of an applicator integral with a magnetic device
• FIG. 13 is an axial and diagrammatic section of another example of a kit according to the invention
• FIG. Example 15 of a kit according to the invention FIG. 15 represents another example of a device for packaging the composition
• FIG. 16 represents a perforated mask that can be used during the implementation of the method according to the invention
• FIG. 17 shows a magnetic sheet that can be used during the implementation of the method according to the invention.
• magnetic bodies are shown in the form of dots for the sake of clarity of the drawing, but in reality the bodies may not be visible individually to the naked eye.
• FIG. 1 shows a kit 1 comprising a cosmetic composition C 1 comprising magnetic particles P whose orientation and / or position condition the appearance of the composition after deposition on a support such as the skin, the mucous membranes or dander or false nails.
• the composition C 1 is a nail polish contained in a container 2 closed by a cap 3.
• the latter supports a cosmetic applicator 4, non-magnetic, comprising an applicator member 5 constituted by a brush for applying the varnish on the nails.
• the kit 1 further comprises a magnetic device 10 for generating a magnetic field useful for modifying the appearance of the composition C 1 , without contact therewith.
• the magnetic device 10 comprises a permanent magnet 12 supported by a holding member 13 with a longitudinal axis X, the polar axis of the magnet 12 being substantially perpendicular to the axis X.
• the magnetic device 10 is arranged to generate a rotating magnetic field and comprises a motor which is not visible, housed in a housing 15, for rotating the holding member 13 around its axis X.
• a switch 16 is present on the housing 15 to allow the user to start the motor and to rotate the holding member 13 with the magnet 12.
• the magnetic field rotating is generated by a plurality of solenoids fed sequentially to generate a rotating field.
• the user can begin, as illustrated in FIG. 3, by applying to the makeup support S, in this case a fingernail, the composition C 1 using the applicator 4.
• the makeup support S in this case a fingernail
• the composition C 1 using the applicator 4.
• the user brings the magnetic device 10 over a central region R of the support S and actuates the switch 16 so as to rotate the magnet 12.
• the magnetic particles contained in the composition C 1 tend to align with the field lines of the magnet 12 and change orientation, resulting in a change in the appearance of the composition C 1 .
• the user can choose the duration of application of the magnetic field depending on the result he wishes to obtain.
• the pattern obtained may for example give the impression of a sphere in relief, as illustrated in FIG.
• the user can apply an additional composition C 2 , for example a transparent varnish, contained in a container shown in FIG. 6, once the composition C 1 has dried.
• this second composition C 2 can make it possible to create an additional effect of depth, for example.
• composition C 1 may have in the example of the nail varnish of Figures 1 to 5 the following formulation, the amounts being expressed in all the examples below in mass fractions.
• the appearance of such a nail polish can be modified by applying a magnetic field before the polish has had time to dry.
• composition C 2 When a second composition C 2 is applied to the first, it has for example the following formulation.
• Such a composition can make it possible to create an additional depth effect.
• the second composition may be intended to create a colored background, being applied before the first.
• the second composition then has for example the following formulation.
• magnétique field applied to the composition may be other than rotating.
• a magnetic device which comprises a permanent magnet 12 in the form of a bar at its end.
• the magnetic device may comprise a member for positioning it relative to the support S.
• This positioning member serves, for example, to prevent the magnetic device from touching the composition while the magnetic field is being exerted.
• the positioning member may further serve to center the pattern which is made relative to the support S, for example the fingernail.
• the positioning member may take various forms, for example that of an extension 17 providing an abutment surface for the end of the finger, as shown in FIG. 8.
• FIG. another example of kit 1 according to the invention, comprising a first composition C 1 constituted in this example by a liquid lipstick or a lip gloss.
• the applicator 4 comprises a flocked tip 20 supported by the cap 3 of the container 2.
• the magnetic device 10 is for example in the form of a flexible structure, for example made of plastic material loaded with magnetized particles, creating a alternating N and S poles, which allows to form on the support coated with the first composition repeated patterns, for example scratches.
• composition C 1 has for example the following formulation.
• kit 1 comprises a housing 30 consisting of a basic body 31 and a cover 32 hinged thereto.
• the base body 31 comprises a compartment 33 housing the composition C 1 constituted, in the example shown, by a foundation in pasty form.
• the base body 31 has a housing 34 arranged to receive at least one magnet 12.
• This magnet 12 may for example have an adhesive face 25 or any other mounting means allowing the user to fix it to the end of his finger so as to bring it close to the masked area, for example a region of the face as shown in Figure 11.
• the user can modify, for example, the clarity of the latter by exposing it to the magnetic field generated by the magnet 12.
• a makeup composition of the skin it has for example the following formulation.
• closure cap 3 is surmounted by the magnet 12, on the opposite side to the applicator member 5.
• the magnet 12 is supported by a holding member 13 surmounted by a cap 51 and can be housed in the absence of use in a compartment 50 of the cap 3 to close the container 2 containing the first composition C 1 .
• the cap 51 serves to grip the magnet 12 and allows the compartment 50 to be closed.
• kit 1 comprising a container 2 consisting of a pot containing the first composition C 1 and a magnetic device 10 having an electromagnet 40 at one end of a housing 44 housing the power supply.
• a switch 45 allows the user to selectively power the electromagnet 40.
• composition C 1 Various devices other than those just described for packaging and / or distributing or applying the composition C 1 can be used.
• composition C 1 may for example be deposited on the support S without an applicator but in the form of a spray, for example using a pump 60 such as illustrated in Figure 15.
• the spray can still be generated by means of an airbrush or a pressurized container, for example.
• a perforated mask 70 shown in Figure 16 and having as aperture a pattern 71, in the form of a star in the example shown, can be interposed between the spray and the support makeup.
• a sheet 75 permeable to the magnetic field, perforated or not, may be interposed between the magnet 12 or F electromagnet 40 and the support S, so as to modify the geometry of the field lines and create new effects.
• the kit may comprise a plurality of magnets having different shapes so as to achieve different patterns.

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