Classifications

• • C—CHEMISTRY; METALLURGY
  • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
  • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
  • C08L51/00—Compositions of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers
  • C08L51/003—Compositions of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers grafted on to macromolecular compounds obtained by reactions only involving unsaturated carbon-to-carbon bonds
• • 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
  • A61K8/26—Aluminium; Compounds thereof
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
  • A61K8/00—Cosmetics or similar toiletry preparations
  • A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
  • A61K8/72—Cosmetics or similar toiletry preparations characterised by the composition containing organic macromolecular compounds
  • A61K8/81—Cosmetics or similar toiletry preparations characterised by the composition containing organic macromolecular compounds obtained by reactions involving only carbon-to-carbon unsaturated bonds
  • A61K8/8105—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
  • A61K8/8111—Homopolymers or copolymers of aliphatic olefines, e.g. polyethylene, polyisobutene; Compositions of derivatives of such polymers
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
  • A61K8/00—Cosmetics or similar toiletry preparations
  • A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
  • A61K8/72—Cosmetics or similar toiletry preparations characterised by the composition containing organic macromolecular compounds
  • A61K8/81—Cosmetics or similar toiletry preparations characterised by the composition containing organic macromolecular compounds obtained by reactions involving only carbon-to-carbon unsaturated bonds
  • A61K8/8141—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides or nitriles thereof; Compositions of derivatives of such polymers
  • A61K8/8152—Homopolymers or copolymers of esters, e.g. (meth)acrylic acid esters; Compositions of derivatives of such polymers
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
  • A61K8/00—Cosmetics or similar toiletry preparations
  • A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
  • A61K8/72—Cosmetics or similar toiletry preparations characterised by the composition containing organic macromolecular compounds
  • A61K8/81—Cosmetics or similar toiletry preparations characterised by the composition containing organic macromolecular compounds obtained by reactions involving only carbon-to-carbon unsaturated bonds
  • A61K8/817—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a single or double bond to nitrogen or by a heterocyclic ring containing nitrogen; Compositions or derivatives of such polymers, e.g. vinylimidazol, vinylcaprolactame, allylamines (Polyquaternium 6)
  • A61K8/8182—Copolymers of vinyl-pyrrolidones. Compositions of derivatives of such polymers
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
  • A61K8/00—Cosmetics or similar toiletry preparations
  • A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
  • A61K8/72—Cosmetics or similar toiletry preparations characterised by the composition containing organic macromolecular compounds
  • A61K8/84—Cosmetics or similar toiletry preparations characterised by the composition containing organic macromolecular compounds obtained by reactions otherwise than those involving only carbon-carbon unsaturated bonds
  • A61K8/89—Polysiloxanes
  • A61K8/891—Polysiloxanes saturated, e.g. dimethicone, phenyl trimethicone, C24-C28 methicone or stearyl dimethicone
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
  • A61K8/00—Cosmetics or similar toiletry preparations
  • A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
  • A61K8/72—Cosmetics or similar toiletry preparations characterised by the composition containing organic macromolecular compounds
  • A61K8/90—Block copolymers
• • 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
  • A61K8/92—Oils, fats or waxes; Derivatives thereof, e.g. hydrogenation products thereof
  • A61K8/922—Oils, fats or waxes; Derivatives thereof, e.g. hydrogenation products thereof of vegetable origin
• • 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
  • A61K8/92—Oils, fats or waxes; Derivatives thereof, e.g. hydrogenation products thereof
  • A61K8/927—Oils, fats or waxes; Derivatives thereof, e.g. hydrogenation products thereof of insects, e.g. shellac
• • 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
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61Q—SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
  • A61Q1/00—Make-up preparations; Body powders; Preparations for removing make-up
  • A61Q1/02—Preparations containing skin colorants, e.g. pigments
  • A61Q1/04—Preparations containing skin colorants, e.g. pigments for lips
  • A61Q1/06—Lipsticks
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61Q—SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
  • A61Q1/00—Make-up preparations; Body powders; Preparations for removing make-up
  • A61Q1/02—Preparations containing skin colorants, e.g. pigments
  • A61Q1/10—Preparations containing skin colorants, e.g. pigments for eyes, e.g. eyeliner, mascara
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61Q—SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
  • A61Q3/00—Manicure or pedicure preparations
  • A61Q3/02—Nail coatings
• • C—CHEMISTRY; METALLURGY
  • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
  • C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
  • C08F265/00—Macromolecular compounds obtained by polymerising monomers on to polymers of unsaturated monocarboxylic acids or derivatives thereof as defined in group C08F20/00
  • C08F265/04—Macromolecular compounds obtained by polymerising monomers on to polymers of unsaturated monocarboxylic acids or derivatives thereof as defined in group C08F20/00 on to polymers of esters
• • C—CHEMISTRY; METALLURGY
  • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
  • C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
  • C08F265/00—Macromolecular compounds obtained by polymerising monomers on to polymers of unsaturated monocarboxylic acids or derivatives thereof as defined in group C08F20/00
  • C08F265/04—Macromolecular compounds obtained by polymerising monomers on to polymers of unsaturated monocarboxylic acids or derivatives thereof as defined in group C08F20/00 on to polymers of esters
  • C08F265/06—Polymerisation of acrylate or methacrylate esters on to polymers thereof
• • C—CHEMISTRY; METALLURGY
  • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
  • C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
  • C08F291/00—Macromolecular compounds obtained by polymerising monomers on to macromolecular compounds according to more than one of the groups C08F251/00 - C08F289/00
• • C—CHEMISTRY; METALLURGY
  • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
  • C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
  • C08F293/00—Macromolecular compounds obtained by polymerisation on to a macromolecule having groups capable of inducing the formation of new polymer chains bound exclusively at one or both ends of the starting macromolecule
  • C08F293/005—Macromolecular compounds obtained by polymerisation on to a macromolecule having groups capable of inducing the formation of new polymer chains bound exclusively at one or both ends of the starting macromolecule using free radical "living" or "controlled" polymerisation, e.g. using a complexing agent
• • C—CHEMISTRY; METALLURGY
  • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
  • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
  • C08L53/00—Compositions of block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers
• • 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
  • A61K2800/59—Mixtures
  • A61K2800/594—Mixtures of polymers

Definitions

• the present invention relates to a cosmetic composition for making up or caring for the skin, including the scalp, of both the human face and body, and human lips or integuments, for instance the hair, the eyelashes or the eyebrows, comprising a cosmetically acceptable organic liquid medium and a particular block polymer.
• Transport-resistant lip and skin makeup compositions are compositions that have the advantage of forming a deposit that does not transfer or that does not leave traces or marks, at least partially, on the supports with which they come into contact (glass, clothing, cigarette or fabrics).
• Known transfer-resistant compositions are based on silicone resins and volatile silicone oils and, although having improved staying power properties, have the drawback of leaving on the skin and the lips, after the volatile silicone oils have evaporated off, a film that becomes uncomfortable over time (sensation of drying out and of tautness) and is barely glossy.
• the aim of the present invention is to propose a novel route for formulating a cosmetic product, in particular a makeup product, which allows good “transfer-resistance” and gloss properties.
• This product especially has the advantage of comprising only one composition, in contrast with the product of patent application WO-A-97/17057.
• the product obtained according to the invention especially when it is a product for the lips, has good properties of migration resistance, staying power and absence of a sensation of drying out.
• One subject of the invention is a glossy, transfer-resistant composition for caring for or making up the skin and/or the lips and/or integuments, containing a film-forming linear block ethylenic polymer.
• the inventors have found, surprisingly, that the use of such a block polymer makes it possible to obtain a glossy, transfer-resistant composition.
• the composition according to the invention also has the advantage of having good staying power.
• composition of the invention may in particular constitute a haircare product or a makeup product for human body, lips or integuments having care and/or treating properties. It especially constitutes a lipstick or a lipgloss, an eyeshadow, attack to product, a mascara, an eyeliner, a product for artificially tanning the skin, an optionally tinted care or protecting cream, a hair-colouring product or a haircare product.
• a subject of the invention is, more specifically, a cosmetic composition containing a cosmetically acceptable organic liquid medium and a film-forming linear ethylenic block polymer, the said polymer being such that, when it is in sufficient amount in the composition:
• the composition according to the invention is a leave-in composition.
• the invention also relates to a cosmetic composition
• a cosmetic composition comprising an organic liquid medium and at least one block polymer as described below.
• gloss means the gloss as may be conventionally measured using a glossmeter by the following method.
• a coat of between 50 ⁇ m and 150 ⁇ m in thickness of the composition is spread using an automatic spreader onto a Leneta brand contrast card of reference Form 1A Penopac.
• the coat covers at least the white background of the card.
• the deposit is left to dry for 24 hours at a temperature of 30° C., and the gloss at 20° is then measured on the white background using a Byk Gardner brand glossmeter of reference microTri-Gloss.
• This measurement (between 0 and 100) is repeated at least three times, and the mean gloss is the mean of the at least three measurements taken.
• the mean gloss of the composition measured at 20° is advantageously greater than or equal to 30, better still greater than or equal to 35, better still greater than or equal to 40, better still greater than or equal to 45, better still greater than or equal to 50 out of 100, better still greater than or equal to 55, and better still greater than or equal to 60.
• the mean gloss of the composition, once spread onto a support, measured at 60° is greater than or equal to 50, better still greater than or equal to 60, better still greater than or equal to 65, better still greater than or equal to 70, better still greater than or equal to 75, better still greater than or equal to 80, better still greater than or equal to 85 or better still greater than or equal to 90 out of 100.
• the mean gloss at 60° is measured as follows.
• the gloss may be measured using a glossmeter, in a conventional manner, by the following method.
• a coat of between 50 ⁇ m and 150 ⁇ m in thickness of the composition is spread using an automatic spreader onto a Leneta brand contrast card of reference Form 1A Penopac.
• the coat covers at least the white background of the card.
• the deposit is left to dry for 24 hours at a temperature of 30° C., and the gloss at 60° is then measured on the white background using a Byk Gardner brand glossmeter of reference microTri-Gloss.
• This measurement (between 0 and 100) is repeated at least three times, and the mean gloss is the mean of the at least three measurements taken.
• the mean gloss of the composition measured at 20° is preferably greater than or equal to 35, preferably 40, 45 or 50 out of 100, and/or the mean gloss of the composition measured at 60° is preferably greater than or equal to 65, 70 or 75 out of 100.
• the composition advantageously constitutes a liquid lipstick.
• the transfer index of the composition according to the invention is preferably less than or equal to 40 out of 100. More preferably, the transfer index is less than or equal to 30, preferably less than or equal to 20, more preferably less than or equal to 15, preferably less than or equal to 10, preferably less than or equal to 5 out of 100, and preferably less than or equal to 2 out of 100.
• the transfer index may be measured according to the following method.
• a support (rectangle of 40 mm ⁇ 70 mm and 3 mm thick) of polyethylene foam that is adhesive on one of the faces, having a density of 33 kg/m 3 (sold under the name RE40X70EP3 from the company Joint Technique Lyonnais Ind) is preheated on a hotplate maintained at a temperature of 40° C. in order for the surface of the support to be maintained at a temperature of 33° C. ⁇ 1° C.
• the composition is applied over the entire non-adhesive surface of the support, by spreading it using a fine brush to obtain a deposit of about 15 ⁇ m of the composition, while leaving the support on the hotplate, and the support is then left to dry for 30 minutes.
• the support After drying, the support is bonded via its adhesive face onto an anvil 20 mm in diameter and equipped with a screw pitch.
• the support/deposit assembly is then cut up using a punch 18 mm in diameter.
• the anvil is then screwed onto a press (Statif Manuel Imada SV-2 from the company Someco) equipped with a tensile testing machine (Imada DPS-20 from the company Someco).
• White photocopier paper of 80 g/m 2 is placed on the bed of the press and the support/deposit assembly is then pressed on the paper at a pressure of 2.5 kg for 30 seconds. After removing the support/deposit assembly, some of the deposit is transferred onto the paper. The colour of the deposit transferred onto the paper is then measured using a Minolta CR300 calorimeter, the colour being characterized by the L*, a*, b* calorimetric parameters. The calorimetric parameters L* 0 , a* 0 and b* 0 of the colour of the plain paper used is determined.
• ⁇ E1 ⁇ square root over (( L* ⁇ L 0 *) 2 +( a* ⁇ a 0 *) 2 +( b* ⁇ b 0 *) 2 ) ⁇
• a total transfer reference is prepared by applying the composition directly onto a paper identical to the one used previously, at room temperature (25° C.), by spreading the composition using a fine brush and so as to obtain a deposit of about 15 ⁇ m of the composition, and the deposit is then left to dry for 30 minutes at room temperature (25° C.). After drying, the calorimetric parameters L*′, a*′ and b*′ of the colour of the deposit placed on the paper, corresponding to the reference colour of total transfer, is measured directly. The calorimetric parameters L*′ 0 , a*′ 0 and b*′ 0 of the colour of the plain paper used are determined.
• ⁇ E2 ⁇ square root over (( L*′ ⁇ L 0 *′) 2 +( a*′ ⁇ a 0 *) 2 +( b*′ ⁇ b 0 *′) 2 ) ⁇
• the transfer of the composition is equal to the ratio: 100 ⁇ E1/ ⁇ E2
• the measurement is performed on 4 supports in succession and the transfer value corresponds to the mean of the 4 measurements obtained with the 4 supports.
• the transfer index is equal to the mean of these four measurements.
• the invention also relates to a process for making up the skin and/or the lips and/or integuments, which consists in applying to the skin and/or the lips and/or integuments the composition as defined above.
• composition according to the invention may be applied to the skin of both the face and the scalp and of the body, mucous membranes, for instance the lips and the inside of the lower eyelids, and integuments, for instance the eyelashes, the hair, the eyebrows, or even body hairs.
• the invention also relates to the use of a block polymer in a sufficient amount in a cosmetic composition to impart gloss and transfer resistance to a deposit of the said composition.
• the invention also relates to the cosmetic use of the composition defined above to improve the gloss of the makeup on the skin and/or the lips and/or integuments.
• composition advantageously contains a small proportion of oils conventionally used to impart gloss, these oils generally being tacky.
• composition according to the invention advantageously contains less than 30%, less than 25%, less than 20% and better still less than 15% of at least one glossy oil.
• oil means a compound that is immiscible with water in all proportions, and which is liquid at room temperature (25° C.) and atmospheric pressure (760 mmHg).
• the glossy oil has, for example, a molar mass ranging from 650 to 10 000 g/mol and preferably from 750 to 7500 g/mol.
• the oil with a molar mass ranging from 650 to 10 000 g/mol may be chosen from:
• lipophilic polymers such as:
• esters such as:
• silicone oils such as phenylsilicones, for instance Belsil PDM 1000 from the company Wacker (MM 9000 g/mol),
• oils of plant origin such as sesame oil (820.6 g/mol)
• composition according to the present invention contains at least one block polymer.
• block polymer means a polymer comprising at least two different blocks and preferably at least three different blocks.
• the block polymer of the composition according to the invention is an ethylenic polymer.
• ethylenic polymer means a polymer obtained by polymerizing monomers comprising an ethylenic unsaturation.
• the block polymer of the composition according to the invention is a linear polymer.
• a polymer of non-linear structure is, for example, a polymer of branched, starburst or grafted structure, or the like.
• the block polymer of the composition according to the present invention is a film-forming polymer.
• film-forming polymer means a polymer capable of forming, by itself or in the presence of an auxiliary film-forming agent, a continuous film that adheres to a support and especially to keratin materials.
• the block polymer of the composition according to the invention is a non-elastomeric polymer.
• non-elastomeric polymer means a polymer which, when it is subjected to a constraint intended to stretch it (for example by 30% relative to its initial length), does not return to a length substantially identical to its initial length when the constraint ceases.
• non-elastomeric polymer denotes a polymer with an instantaneous recovery R i ⁇ 50% and a delayed recovery R 2h ⁇ 70% after having been subjected to a 30% elongation.
• R i is ⁇ 30% and R 2h ⁇ 50%.
• non-elastomeric nature of the polymer is determined according to the following protocol:
• a polymer film is prepared by pouring a solution of the polymer in a Teflon-coated mould, followed by drying for 7 days in an environment conditioned at 23 ⁇ 5° C. and 50 ⁇ 10% relative humidity.
• a film about 100 ⁇ m thick is thus obtained, from which are cut rectangular specimens (for example using a punch) 15 mm wide and 80 mm long.
• This sample is subjected to a tensile stress using a machine sold under the reference Zwick, under the same temperature and humidity conditions as for the drying.
• the specimens are pulled at a speed of 50 mm/min and the distance between the jaws is 50 mm, which corresponds to the initial length (l 0 ) of the specimen.
• the instantaneous recovery R i is determined in the following manner:
• R i ( ⁇ max ⁇ 1 )/ ⁇ max ) ⁇ 100
• the percentage residual elongation of the specimen ( ⁇ 2h ) is measured, 2 hours after returning to zero constraint.
• R 2h ( ⁇ max ⁇ 2h )/ ⁇ max ) ⁇ 100
• a block polymer according to one embodiment of the invention has an instantaneous recovery R i of 10% and a delayed recovery R 2h of 30%.
• the block polymer of the composition according to the invention does not comprise any styrene units.
• polymer free of styrene units means a polymer comprising less than 10%, preferably less than 5%, preferentially less than 2% and more preferentially less than 1% by weight i) of styrene units of formula —CH(C 6 H 5 )—CH 2 — or ii) of substituted styrene units, for instance methylstyrene, chlorostyrene or chloromethylstyrene.
• the block polymer of the composition according to the invention is derived from aliphatic ethylenic monomers.
• aliphatic monomer means a monomer comprising no aromatic groups.
• the block polymer is an ethylenic polymer derived from aliphatic ethylenic monomers comprising a carbon-carbon double bond and at least one ester group —COO— or amide group —CON—.
• the ester group may be linked to one of the two unsaturated carbons via the carbon atom or the oxygen atom.
• the amide group may be linked to one of the two unsaturated carbons via the carbon atom or the nitrogen atom.
• the block polymer comprises at least one first block and at least one second block.
• At least one block means one or more blocks.
• the block polymer comprises at least one first block and at least one second block that have different glass transition temperatures (Tg)
• first and second blocks may be linked together via an intermediate segment with a glass transition temperature between the glass transition temperatures of the first and second blocks.
• the block polymer comprises at least one first block and at least one second block linked together via an intermediate segment comprising at least one constituent monomer of the first block and at least one constituent monomer of the second block.
• the intermediate block is derived essentially from constituent monomers of the first block and of the second block.
• the term “essentially” means at least 85%, preferably at least 90%, better still 95% and even better still 100%.
• the intermediate segment comprising at least one constituent monomer of the first block and at least one constituent monomer of the second block of the polymer is a random polymer.
• the block polymer comprises at least one first block and at least one second block that are incompatible in the organic liquid medium of the composition of the invention.
• mutant blocks means that the mixture formed from the polymer corresponding to the first block and from the polymer corresponding to the second block is not miscible in the liquid that is in major amount by weight contained in the organic liquid medium of the composition, at room temperature (25° C.) and atmospheric pressure (10 5 Pa), for a content of the polymer mixture of greater than or equal to 5% by weight, relative to the total weight of the mixture (polymers and major organic liquid), it being understood that:
• the organic liquid medium comprises a mixture of organic liquids, in the case of two or more liquids present in identical mass proportions, the said polymer mixture is immiscible in at least one of them.
• the organic liquid medium comprises only one organic liquid
• this liquid obviously constitutes the liquid that is in major amount by weight.
• organic liquid medium means a medium containing at least one organic liquid, i.e. at least one organic compound that is liquid at room temperature (25° C.) and atmospheric pressure (10 5 Pa).
• the major liquid of the organic liquid medium is a volatile or non-volatile oil (fatty substance).
• the organic liquid is cosmetically acceptable (acceptable tolerance, toxicology and feel).
• the organic liquid medium is cosmetically acceptable, in the sense that it is compatible with keratin materials, for instance the oils or organic solvents commonly used in cosmetic compositions.
• the major liquid of the organic liquid medium is the polymerization solvent or one of the polymerization solvents of the block polymer, as are described below.
• polymerization solvent means a solvent or a mixture of solvents.
• the polymerization solvent may be chosen especially from ethyl acetate, butyl acetate, alcohols such as isopropanol and ethanol, aliphatic alkanes such as isododecane, and mixtures thereof.
• the polymerization solvent is a mixture of butyl acetate and isopropanol, or isododecane.
• the block polymer may be incorporated into the composition to a high solids content, typically greater than 10%, greater than 20%, more preferably greater than 30% and more preferentially greater than 45% by weight relative to the total weight of the composition, while at the same time being easy to formulate.
• the block polymer comprises no silicon atoms in its skeleton.
• skeleton means the main chain of the polymer, as opposed to the pendent side chains.
• the polymer according to the invention is not water-soluble, i.e. the polymer is not soluble in water or in a mixture of water and linear or branched lower monoalcohols containing from 2 to 5 carbon atoms, for instance ethanol, isopropanol or n-propanol, without pH modification, at an active material content of at least 1% by weight, at room temperature (25° C.).
• the block polymer has a polydispersity index I of greater than 2.
• the block polymer used in the compositions according to the invention has a polydispersity index I of greater than 2, for example ranging from 2 to 9, preferably greater than or equal to 2.5, for example ranging from 2.5 to 8 and better still greater than or equal to 2.8, and especially ranging from 2.8 to 6.
• the polydispersity index I of the polymer is equal to the ratio of the weight-average mass Mw to the number-average mass Mn.
• the weight-average molar mass (Mw) and number-average molar mass (Mn) are determined by gel permeation liquid chromatography (THF solvent, calibration curve established with linear polystyrene standards, refractometric detector).
• the weight-average mass (Mw) of the block polymer is preferably less than or equal to 300 000; it ranges, for example, from 35 000 to 200 000 and better still from 45 000 to 150 000.
• the number-average mass (Mn) of the block polymer is preferably less than or equal to 70 000; it ranges, for example, from 10 000 to 60 000 and better still from 12 000 to 50 000.
• Each block of the block polymer is derived from one type of monomer or from several different types of monomer.
• each block may consist of a homopolymer or a copolymer; this copolymer constituting the block may in turn be random or alternating.
• Tg values indicated for the first and second blocks in the present patent application are theoretical Tg values.
• the difference between the glass transition temperatures of the first and second blocks is generally greater than 10° C., preferably greater than 20° C. and better still greater than 30° C.
• the block polymer comprises at least one first block and at least one second block such that the first block may be chosen from:
• the expression: “between . . . and . . . ” is intended to denote a range of values for which the limits mentioned are excluded, and “from . . . to . . . ” and “ranging from . . . to . . . ” are intended to denote a range of values for which the limits are included.
• the block with a Tg of greater than or equal to 40° C. has, for example, a Tg ranging from 40 to 150° C., preferably greater than or equal to 50° C., for example ranging from 50° C. to 120° C. and better still greater than or equal to 60° C., for example ranging from 60° C. to 120° C.
• the block with a Tg of greater than or equal to 40° C. may be a homopolymer or a copolymer.
• the block with a Tg of greater than or equal to 40° C. may be totally or partially derived from one or more monomers, which are such that the homopolymer prepared from these monomers has a glass transition temperature of greater than or equal to 40° C.
• this block is a homopolymer, it is derived from monomers which are such that the homopolymers prepared from these monomers have glass transition temperatures of greater than or equal to 40° C.
• This first block may be a homopolymer consisting of only one type of monomer (for which the Tg of the corresponding homopolymer is greater than or equal to 40° C.).
• the first block is a copolymer
• it may be totally or partially derived from one or more monomers, the nature and concentration of which are chosen such that the Tg of the resulting copolymer is greater than or equal to 40° C.
• the copolymer may comprise, for example:
• Tg values of greater than or equal to 40° C., for example a Tg ranging from 40 to 150° C., preferably greater than or equal to 50° C., for example ranging from 50° C. to 120° C. and better still greater than or equal to 60° C., for example ranging from 60° C. to 120° C., and
• monomers which are such that the homopolymers prepared from these monomers have Tg values of less than 40° C., chosen from monomers with a Tg of between 20 and 40° C. and/or monomers with a Tg of less than or equal to 20° C., for example a Tg ranging from ⁇ 100 to 20° C., preferably less than 15° C., especially ranging from ⁇ 80° C. to 15° C. and better still less than 10° C., for example ranging from ⁇ 50° C. to 0° C., as described later.
• the monomers whose homopolymers have a glass transition temperature of greater than or equal to 40° C. are chosen, preferably, from the following monomers, also known as the main monomers:
• Main monomers that are particularly preferred are methyl methacrylate, isobutyl (meth)acrylate and isobornyl (meth)acrylate, and mixtures thereof.
• the block with a Tg of less than or equal to 20° C. has, for example, a Tg ranging from ⁇ 100 to 20° C., preferably less than or equal to 15° C., especially ranging from ⁇ 80° C. to 15° C. and better still less than or equal to 10° C., for example ranging from ⁇ 50° C. to 0° C.
• the block with a Tg of less than or equal to 20° C. may be a homopolymer or a copolymer.
• the block with a Tg of less than or equal to 20° C. may be totally or partially derived from one or more monomers, which are such that the homopolymer prepared from these monomers has a glass transition temperature of less than or equal to 20° C.
• this block is a homopolymer, it is derived from monomers which are such that the homopolymers prepared from these monomers have glass transition temperatures of less than or equal to 20° C.
• This second block may be a homopolymer consisting of only one type of monomer (for which the Tg of the corresponding homopolymer is less than or equal to 20° C.)
• the block with a Tg of less than or equal to 20° C. is a copolymer, it may be totally or partially derived from one or more monomers, the nature and concentration of which are chosen such that the Tg of the resulting copolymer is less than or equal to 20° C.
• It may comprise, for example
• one or more monomers whose corresponding homopolymer has a Tg of less than or equal to 20° C. for example a Tg ranging from ⁇ 100° C. to 20° C., preferably less than 15° C., especially ranging from ⁇ 80° C. to 15° C. and better still less than 10° C., for example ranging from ⁇ 50° C. to 0° C., and
• one or more monomers whose corresponding homopolymer has a Tg of greater than 20° C. such as monomers with a Tg of greater than or equal to 40° C., for example a Tg ranging from 40 to 150° C., preferably greater than or equal to 50° C., for example ranging from 50° C. to 120° C. and better still greater than or equal to 60° C., for example ranging from 60° C. to 120° C. and/or monomers with a Tg of between 20 and 40° C., as described above.
• the block with a Tg of less than or equal to 20° C. is a homopolymer.
• the monomers whose homopolymer has a Tg of less than or equal to 20° C. are preferably chosen from the following monomers, or main monomer:
• R 3 representing a linear or branched C 1 to C 12 unsubstituted alkyl group, with the exception of the tert-butyl group, in which one or more hetero atoms chosen from O, N and S is (are) optionally intercalated,
• the main monomers that are particularly preferred for the block with a Tg of less than or equal to 20° C. are alkyl acrylates whose alkyl chain contains from 1 to 10 carbon atoms, with the exception of the tert-butyl group, such as methyl acrylate, isobutyl acrylate and 2-ethylhexyl acrylate, and mixtures thereof.
• the block with a Tg of between 20 and 40° C. may be a homopolymer or a copolymer.
• the block with a Tg of between 20 and 40° C. may be totally or partially derived from one or more monomers, which are such that the homopolymer prepared from these monomers has a glass transition temperature of between 20 and 40° C.
• the block with a Tg of between 20 and 40° C. may be totally or partially derived from monomers, which are such that the corresponding homopolymer has a Tg of greater than or equal to 40° C. and from monomers which are such that the corresponding homopolymer has a Tg of less than or equal to 20° C.
• this block is a homopolymer, it is derived from monomers (or main monomer) which are such that the homopolymers prepared from these monomers have glass transition temperatures of between 20 and 40° C.
• This first block may be a homopolymer, consisting of only one type of monomer (for which the Tg of the corresponding homopolymer ranges from 20° C. to 40° C.).
• the monomers whose homopolymer has a glass transition temperature of between 20 and 40° C. are preferably chosen from n-butyl methacrylate, cyclodecyl acrylate, neopentyl acrylate and isodecylacrylamide, and mixtures thereof.
• the block with a Tg of between 20 and 40° C. is a copolymer, it is totally or partially derived from one or more monomers (or main monomer) whose nature and concentration are chosen such that the Tg of the resulting copolymer is between 20 and 40° C.
• the block with a Tg of between 20 and 40° C. is a copolymer totally or partially derived from:
• main monomers whose corresponding homopolymer has a Tg of greater than or equal to 40° C., for example a Tg ranging from 40° C. to 150° C., preferably greater than or equal to 50° C., for example ranging from 50 to 120° C. and better still greater than or equal to 60° C., for example ranging from 60° C. to 120° C., as described above, and/or
• main monomers whose corresponding homopolymer has a Tg of less than or equal to 20° C., for example a Tg ranging from ⁇ 100 to 20° C., preferably less than or equal to 15° C., especially ranging from ⁇ 80° C. to 15° C. and better still less than or equal to 10° C., for example ranging from ⁇ 50° C. to 0° C., as described above, the said monomers being chosen such that the Tg of the copolymer forming the first block is between 20 and 40° C.
• Such main monomers are chosen, for example, from methyl methacrylate, isobornyl acrylate and methacrylate, butyl acrylate and 2-ethylhexyl acrylate, and mixtures thereof.
• the proportion of the second block with a Tg of less than or equal to 20° C. ranges from 10% to 85% by weight, better still from 20% to 70% and even better still from 20% to 50% by weight of the polymer.
• each of the first and second blocks comprises at least one monomer chosen from acrylic acid, acrylic acid esters, (meth)acrylic acid and (meth)acrylic acid esters, and mixtures thereof.
• each of the first and second blocks is totally derived from at least one monomer chosen from acrylic acid, acrylic acid esters, (meth)acrylic acid and (meth)acrylic acid esters, and mixtures thereof.
• each of the blocks may contain in small proportion at least one constituent monomer of the other block.
• the first block may contain at least one constituent monomer of the second block, and vice versa.
• Each of the first and/or second blocks may comprise, in addition to the monomers indicated above, one or more other monomers known as additional monomers, which are different from the main monomers mentioned above.
• This additional monomer is chosen, for example, from:
• hydrophilic monomers such as:
• Additional monomers that are particularly preferred are acrylic acid, methacrylic acid and trifluoroethyl methacrylate, and mixtures thereof.
• each of the first and second blocks of the block polymer comprises at least one monomer chosen from (meth)acrylic acid esters and optionally at least one additional monomer such as (meth)acrylic acid, and mixtures thereof.
• each of the first and second blocks of the block polymer is totally derived from at least one monomer chosen from (meth)acrylic acid esters and optionally at least one additional monomer such as (meth)acrylic acid, and mixtures thereof.
• the block polymer is a non-silicone polymer, i.e. a polymer free of silicon atoms.
• This or these additional monomer(s) generally represent(s) an amount of less than or equal to 30% by weight, for example from 1% to 30% by weight, preferably from 5% to 20% by weight and more preferably from 7% to 15% by weight, relative to the total weight of the first and/or second blocks.
• the block polymer may be obtained by free-radical solution polymerization according to the following preparation process:
• the block polymer comprises a first block with a Tg of greater than or equal to 40° C., as described above in a) and a second block with a Tg of less than or equal to 20° C., as described above in b).
• the first block with a Tg of greater than or equal to 40° C. is a copolymer derived from monomers which are such that the homopolymer prepared from these monomers has a glass transition temperature of greater than or equal to 40° C., such as the monomers described above.
• the second block with a Tg of less than or equal to 20° C. is a homopolymer derived from monomers which are such that the homopolymer prepared from these monomers has a glass transition temperature of less than or equal to 20° C., such as the monomers described above.
• the proportion of the block with a Tg of greater than or equal to 40° C. ranges from 20% to 90%, better still from 30% to 80% and even better still from 50% to 70% by weight of the polymer.
• the proportion of the block with a Tg of less than or equal to 20° C. ranges from 5% to 75%, preferably from 15% to 50% and better still from 25% to 45% by weight of the polymer.
• the polymer according to the invention may comprise:
• a first block with a Tg of greater than or equal to 40° C. for example having a Tg ranging from 70 to 110° C., which is a methyl methacrylate/acrylic acid copolymer,
• an intermediate block which is a methyl methacrylate/acrylic acid/methyl acrylate copolymer.
• the polymer according to the invention may comprise:
• an intermediate block which is a methyl methacrylate/acrylic acid/methyl acrylate/trifluoroethyl methacrylate random copolymer.
• the polymer according to the invention may comprise:
• an intermediate block which is an isobornyl acrylate/isobutyl methacrylate/2-ethylhexyl acrylate random copolymer.
• the polymer according to the invention may comprise:
• an intermediate block which is an isobornyl acrylate/methyl methacrylate/2-ethylhexyl acrylate random copolymer.
• the polymer according to the invention may comprise:
• an intermediate block which is an isobornyl acrylate/isobornyl methacrylate/2-ethylhexyl acrylate random copolymer.
• the polymer according to the invention may comprise:
• an intermediate block which is an isobornyl methacrylate/isobutyl methacrylate/isobutyl acrylate random copolymer.
• the polymer according to the invention may comprise:
• an intermediate block which is an isobornyl acrylate/isobornyl methacrylate/isobutyl acrylate random copolymer.
• the polymer according to the invention may comprise:
• an intermediate block which is an isobornyl acrylate/isobutyl methacrylate/isobutyl acrylate random copolymer.
• the amounts are expressed in grams.
• isododecane 100 g are introduced into a 1 litre reactor and the temperature is then increased so as to pass from room temperature (25° C.) to 90° C. over 1 hour.
• the mixture is maintained at 90° C. for 1 hour 30 minutes.
• the mixture is maintained at 90° C. for 3 hours and is then cooled.
• This polymer has a weight-average mass of 77 000 and a number-average mass of 19 000, i.e. a polydispersity index I of 4.05.
• isododecane 100 g are introduced into a 1 litre reactor and the temperature is then increased so as to pass from room temperature (25° C.) to 90° C. over 1 hour.
• the mixture is maintained at 90° C. for 1 hour 30 minutes.
• the mixture is maintained at 90° C. for 3 hours and is then cooled.
• This polymer has a weight-average mass of 103 900 and a number-average mass of 21 300, i.e. a polydispersity index I of 4.89.
• isododecane 100 g are introduced into a 1 litre reactor and the temperature is then increased so as to pass from room temperature (25° C.) to 90° C. over 1 hour.
• the mixture is maintained at 90° C. for 1 hour 30 minutes.
• the mixture is maintained at 90° C. for 3 hours and is then cooled.
• This polymer has a weight-average mass of 144 200 and a number-average mass of 49 300, i.e. a polydispersity index I of 2.93.
• the block polymer comprises a first block having a glass transition temperature (Tg) of between 20 and 40° C., in accordance with the blocks described in c) and a second block having a glass transition temperature of less than or equal to 20° C., as described above in b) or a glass transition temperature of greater than or equal to 40° C., as described in a) above.
• Tg glass transition temperature
• the proportion of the first block with a Tg of between 20 and 40° C. ranges from 10% to 85%, better still from 30% to 80% and even better still from 50% to 70% by weight of the polymer.
• the second block is a block with a Tg of greater than or equal to 40° C., it is preferably present in a proportion ranging from 10% to 85% by weight, better still from 20% to 70% and even better still from 30% to 70% by weight of the polymer.
• the second block is a block with a Tg of less than or equal to 20° C., it is preferably present in a proportion ranging from 10% to 85% by weight, better still from 20% to 70% and even better still from 20% to 50% by weight of the polymer.
• the first block with a Tg of between 20 and 40° C. is a copolymer derived from monomers which are such that the corresponding homopolymer has a Tg of greater than or equal to 40° C., and from monomers which are such that the corresponding homopolymer has a Tg of less than or equal to 20° C.
• the second block with a Tg of less than or equal to 20° C. or with a Tg of greater than or equal to 40° C. is a homopolymer.
• the block polymer may comprise:
• an intermediate block comprising at least one methyl acrylate, methyl methacrylate monomer
• an intermediate block comprising methyl methacrylate, at least one acrylic acid monomer and at least one methyl acrylate monomer.
• the block polymer may comprise:
• an intermediate block which is an isobornyl acrylate/isobutyl methacrylate/2-ethylhexyl acrylate random copolymer.
• the block polymer may comprise:
• an intermediate block which is an isobornyl acrylate/methyl acrylate/acrylic acid random copolymer.
• composition according to the invention preferably contains from 0.1% to 60% by weight of active material (or solids), preferably from 0.5% to 50% by weight and more preferably from 1% to 40% by weight, of the polymer.
• composition according to the invention may comprise a hydrophilic medium comprising water or a mixture of water and of hydrophilic organic solvent(s), for instance alcohols and especially linear or branched lower monoalcohols containing from 2 to 5 carbon atoms, for instance ethanol, isopropanol or n-propanol, and polyols, for instance glycerol, diglycerol, propylene glycol, sorbitol, pentylene glycol and polyethylene glycols, or alternatively hydrophilic C 2 ethers and C 2 -C 4 aldehydes.
• hydrophilic medium comprising water or a mixture of water and of hydrophilic organic solvent(s), for instance alcohols and especially linear or branched lower monoalcohols containing from 2 to 5 carbon atoms, for instance ethanol, isopropanol or n-propanol, and polyols, for instance glycerol, diglycerol, propylene glycol, sorbitol, pent
• the water or the mixture of water and of hydrophilic organic solvents may be present in the composition according to the invention in a content ranging from 0.1% to 99% by weight and preferably from 10% to 80% by weight relative to the total weight of the composition.
• composition according to the invention comprises a cosmetically acceptable organic liquid medium (acceptable tolerance, toxicology and feel).
• the organic liquid medium of the composition contains at least one organic solvent, which is the or one of the polymerization solvent(s) for the block polymer as described above.
• the said organic solvent is the liquid that is in majority amount by weight in the organic liquid medium of the cosmetic composition.
• the organic liquid medium comprises fatty substances that are liquid at room temperature (in general 25° C.). These liquid fatty substances may be of animal, plant, mineral or synthetic origin.
• oils As fatty substances that are liquid at room temperature, often known as oils, which may be used in the invention, mention may be made of: hydrocarbon-based oils of animal origin such as perhydrosqualene; hydrocarbon-based plant oils such as liquid triglycerides of fatty acids containing from 4 to 10 carbon atoms, for instance heptanoic or octanoic acid triglycerides, or alternatively sunflower oil, corn oil, soybean oil, grapeseed oil, sesame seed oil, apricot oil, macadamia oil, castor oil, avocado oil, caprylic/capric acid triglycerides, jojoba oil or shea butter; linear or branched hydrocarbons, of mineral or synthetic origin, such as liquid paraffins and derivatives thereof, petroleum jelly, polydecenes, and hydrogenated polyisobutylene such as butter; synthetic esters and ethers, especially of fatty acids, for instance purcellin oil, isopropyl myristate, 2-ethylhe
• oils may be present in a content ranging from 0.01% to 90% and better still from 0.1% to 85% by weight relative to the total weight of the composition.
• the organic liquid medium of the composition according to the invention may also comprise one or more cosmetically acceptable organic solvents (acceptable tolerance, toxicology and feel).
• solvents may generally be present in a content ranging from 0.1% to 90%, preferably from 10% to 90% and better still from 30% to 90% by weight relative to the total weight of the composition.
• solvents that may be used in the composition of the invention, mention may be made, besides the hydrophilic organic solvents mentioned above, of ketones that are liquid at room temperature, such as methyl ethyl ketone, methyl isobutyl ketone, diisobutyl ketone, isophorone, cyclohexanone and acetone; propylene glycol ethers that are liquid at room temperature, such as propylene glycol monomethyl ether, propylene glycol monomethyl ether acetate and dipropylene glycol mono-n-butyl ether; short-chain esters (containing from 3 to 8 carbon atoms in total), such as ethyl acetate, methyl acetate, propyl acetate, n-butyl acetate and isopentyl acetate; ethers that are liquid at room temperature, such as diethyl ether, dimethyl ether and dichlorodiethyl ether; alkanes that are liquid at room temperature, such
• composition may comprise, besides the block polymer described above an additional polymer such as a film-forming polymer.
• film-forming polymer means a polymer that is capable of forming, by itself or in the presence of an auxiliary film-forming agent, a continuous film that adheres to a support, especially to keratin materials.
• Film-forming polymers that may be mentioned in particular include acrylic polymers, polyurethanes, polyesters, polyamides, polyureas and cellulose-based polymers, for instance nitrocellulose.
• the polymer may be combined with one or more auxiliary film-forming agents.
• a film-forming agent may be chosen from any compound known to those skilled in the art as being capable of fulfilling the desired function, and may be chosen especially from plasticizers and coalescers.
• composition according to the invention may comprise at least one wax.
• wax means a lipophilic compound that is solid at room temperature (25° C.), which undergoes a reversible solid/liquid change of state, and which has a melting point of greater than or equal to 30° C., which may be up to 120° C.
• the melting point of the wax may be measured using a differential scanning calorimeter (DSC), for example the calorimeter sold under the name DSC 30 by the company Mettler.
• DSC differential scanning calorimeter
• the waxes may be hydrocarbon-based waxes, fluoro waxes and/or silicone waxes and may be of plant, mineral, animal and/or synthetic origin.
• the waxes have a melting point of greater than 25° C. and better still greater than 45° C.
• the nature and amount of the solid fatty substances depend on the desired mechanical properties and textures.
• the composition may contain from 0 to 50% by weight and better still from 1% to 30% by weight of waxes, relative to the total weight of the composition.
• composition according to the invention may also comprise one or more dyestuffs chosen from water-soluble dyes and pulverulent dyestuffs, for instance pigments, nacres and flakes that are well known to those skilled in the art.
• the dyestuffs may be present in the composition in a content ranging from 0.01% to 50% by weight and preferably from 0.01% to 30% by weight, relative to the weight of the composition.
• pigments should be understood as meaning white or coloured, mineral or organic particles of any shape, which are insoluble in the physiological medium and which are intended to colour the composition.
• nacres should be understood as meaning iridescent particles of any shape, produced especially by certain molluscs in their shell, or alternatively synthesized.
• the pigments may be white or coloured, and mineral and/or organic.
• mineral pigments that may be mentioned are titanium dioxide, optionally surface-treated, zirconium oxide or cerium oxide, and also zinc oxide, iron oxide (black, yellow or red) or chromium oxide, manganese violet, ultramarine blue, chromium hydrate and ferric blue, and metal powders, for instance aluminium powder or copper powder.
• organic pigments that may be mentioned are carbon black, pigments of D & C type, and lakes based on cochineal carmine or on barium, strontium, calcium or aluminium.
• pigments with an effect such as particles comprising a natural or synthetic, organic or mineral substrate, for example glass, acrylic resins, polyester, polyurethane, polyethylene terephthalate, ceramics or aluminas, the said substrate being uncoated or coated with metal substances, for instance aluminium, gold, silver, platinum, copper or bronze, or with metal oxides, for instance titanium dioxide, iron oxide or chromium oxide, and mixtures thereof.
• a natural or synthetic, organic or mineral substrate for example glass, acrylic resins, polyester, polyurethane, polyethylene terephthalate, ceramics or aluminas
• metal substances for instance aluminium, gold, silver, platinum, copper or bronze
• metal oxides for instance titanium dioxide, iron oxide or chromium oxide, and mixtures thereof.
• the nacreous pigments may be chosen from white nacreous pigments such as mica coated with titanium or with bismuth oxychloride, coloured nacreous pigments such as titanium mica coated with iron oxides, titanium mica coated especially with ferric blue or chromium oxide, titanium mica coated with an organic pigment of the abovementioned type and also nacreous pigments based on bismuth oxychloride. Interference pigments, especially liquid-crystal pigments or multilayer pigments, may also be used.
• the water-soluble dyes are, for example, beetroot juice or methylene blue.
• the composition according to the invention may also comprise one or more fillers, especially in a content ranging from 0.01% to 50% by weight and preferably ranging from 0.01% to 30% by weight, relative to the total weight of the composition.
• fillers should be understood as meaning colourless or white, mineral or synthetic particles of any shape, which are insoluble in the medium of the composition, irrespective of the temperature at which the composition is manufactured. These fillers serve especially to modify the rheology or the texture of the composition.
• the fillers may be mineral or organic in any form, platelet-shaped, spherical or oblong, irrespective of the crystallographic form (for example leaflet, cubic, hexagonal, orthorhombic, etc.). Mention may be made of talc, mica, silica, kaolin, polyamide (Nylon®) powders (Orgasol® from Atochem), poly- ⁇ -alanine powder and polyethylene powder, powders of tetrafluoroethylene polymers (Teflon®), lauroyllysine, starch, boron nitride, hollow polymer microspheres such as those of polyvinylidene chloride/acrylonitrile, for instance Expancel® (Nobel Industrie) or acrylic acid copolymers (Polytrap® from the company Dow Corning) and silicone resin microbeads (for example Tospearls® from Toshiba), elastomeric polyorganosiloxane particles, precipitated calcium carbonate, magnesium carbonate, magnesium hydrocarbonate
• the composition according to the invention may especially be in the form of a stick, a suspension, a dispersion, a solution, a gel, an emulsion, especially an oil-in-water (O/W) emulsion, a water-in-oil (W/O) emulsion or a multiple emulsion (W/O/W or polyol/O/W or O/W/O emulsion), in the form of a cream, a paste, a mousse, a dispersion of vesicles, especially of ionic or nonionic lipids, a two-phase or multi-phase lotion, a spray, a powder, a paste, especially a soft paste (especially a paste with a dynamic viscosity at 25° C. of about from 0.1 to 40 Pa ⁇ s under a shear rate of 200 s ⁇ 1 , after measurement for 10 minutes in cone/plate geometry).
• the composition may be anhydrous; for example, it may be an anhydrous paste.
• a person skilled in the art may select the appropriate galenical form, and also the method for preparing it, on the basis of his general knowledge, taking into account firstly the nature of the constituents used, especially their solubility in the support, and secondly the intended application for the composition.
• composition according to the invention may be a makeup composition, for instance products for the complexion (foundations), makeup rouges, eyeshadows, lipsticks, concealer products, blushers, mascaras, eyeliners, eyebrow makeup products, lip or eye pencils, nail products, such as nail varnishes, body makeup products or hair makeup products (hair mascara or hair lacquer).
• makeup rouges for the complexion
• eyeshadows lipsticks
• concealer products blushers
• mascaras eyeliners
• eyebrow makeup products lip or eye pencils
• nail products such as nail varnishes, body makeup products or hair makeup products (hair mascara or hair lacquer).
• composition according to the invention may also be a care product for body and facial skin, especially an antisun product or a skin-colouring product (such as a self-tanning product).
• the composition according to the invention may also be a haircare product, especially for holding or styling the hair or for shaping the hair.
• the haircare compositions are preferably shampoos, hairsetting gels or lotions, blow-drying lotions, or fixing and styling compositions such as lacquers or sprays.
• a subject of the present invention is also a cosmetic assembly comprising:
• the container may be in any adequate form. It may especially be in the form of a bottle, a tube, a jar, a case, a box, a sachet or a carton.
• the closing member may be in the form of a removable stopper, a lid, a cap, a tear-off strip or a capsule, especially of the type comprising a body attached to the container and a cover cap articulated on the body. It may also be in the form of a member for selectively closing the container, especially a pump, a valve or a flap valve.
• the container may be combined with an applicator, especially in the form of a brush comprising an arrangement of bristles maintained by a twisted wire.
• a twisted brush is described especially in patent U.S. Pat. No. 4,887,622.
• It may also be in the form of a comb comprising a plurality of application members, obtained especially by moulding. Such combs are described, for example, in patent FR 2 796 529.
• the applicator may be in the form of a fine brush, as described, for example, in patent FR 2 722 380.
• the applicator may be in the form of a block of foam or of elastomer, a felt or a spatula.
• the applicator may be free (tuft or sponge) or securely fastened to a rod borne by the closing member, as described, for example, in patent U.S. Pat. No. 5,492,426.
• the applicator may be securely fastened to the container, as described, for example, in patent FR 2 761 959.
• the product may be contained directly in the container, or indirectly.
• the product may be arranged on an impregnated support, especially in the form of a wipe or a pad, and arranged (individually or in plurality) in a box or in a sachet.
• an impregnated support especially in the form of a wipe or a pad, and arranged (individually or in plurality) in a box or in a sachet.
• Such a support incorporating the product is described, for example, in patent application WO 01/035-38.
• the closing member may be coupled to the container by screwing.
• the coupling between the closing member and the container is done other than by screwing, especially via a bayonet mechanism, by click-fastening, gripping, welding, bonding or by magnetic attraction.
• click-fastening in particular means any system involving the crossing of a bead or cord of material by elastic deformation of a portion, especially of the closing member, followed by return to the elastically unconstrained position of the said portion after the crossing of the bead or cord.
• the container may be at least partially made of thermoplastic material.
• thermoplastic materials that may be mentioned include polypropylene or polyethylene.
• the container is made of non-thermoplastic material, especially glass or metal (or alloy).
• the container may have rigid walls or deformable walls, especially in the form of a tube or a tubular bottle.
• the container may comprise means for distributing or facilitating the distribution of the composition.
• the container may have deformable walls so as to allow the composition to exit in response to a positive pressure inside the container, this positive pressure being caused by elastic (or non-elastic) squeezing of the walls of the container.
• the product may be driven out by a piston mechanism.
• the container may comprise a mechanism, especially a rack mechanism, a threaded-rod mechanism or a helical groove mechanism, and may be capable of moving a stick in the direction of the said aperture.
• a mechanism is described, for example, in patent FR 2 806 273 or in patent FR 2 775 566.
• Such a mechanism for a liquid product is described in patent FR 2 727 609.
• the container may consist of a carton with a base delimiting at least one housing containing the composition, and a lid, especially articulated on the base, and capable of at least partially covering the said base.
• a carton is described, for example, in patent application WO 03/018423 or in patent FR 2 791 042.
• the container may be equipped with a drainer arranged in the region of the aperture of the container.
• a drainer makes it possible to wipe the applicator and possibly the rod to which it may be securely fastened.
• Such a drainer is described, for example, in patent FR 2 792 618.
• the composition may be at atmospheric pressure inside the container (at room temperature) or pressurized, especially by means of a propellent gas (aerosol).
• a propellent gas especially by means of a propellent gas (aerosol).
• the container is equipped with a valve (of the type used for aerosols).
• the product Lipfinity is a lip makeup product comprising a pigmented liquid lipstick and a transparent colourless balm in the form of a stick.
• the gloss and transfer measurements were performed on the pigmented liquid lipstick composition of the product sold under the brand name Lipfinity.
• the transfer index is measured according to the method described above.
• Product whose transfer Transfer value index is evaluated (in %) Pigmented composition of 1.4 ⁇ 0.1 the product Lipfinity Example 4 1.3 ⁇ 0.9

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