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

• Nail polish composition comprising a block polymer
• the subject of the present invention is a nitrocellulose-free nail varnish comprising a block polymer.
• the invention also relates to a method for making up or caring for the nails. These compositions can be applied to human nails or else to false nails.
• compositions to be applied to the nail from. type nail polish or care base for nails in a solvent medium, usually comprise at least one polymer.
• film-forming agent optionally a plasticizing agent, pigments, rheological agents and solvents.
• Nitrocellulose is a film former commonly used in nail varnishes in a solvent medium to obtain shiny and good-hold compositions.
• Nitrocellulose is a polymer made up of an assembly of nitrated anhydroglucose rings partly obtained by esterification of part of the free hydroxyl functions of a cellulose with nitric acid in the presence of sulfuric acid.
• nitrocellulose still remains the main film-forming agent most used in solvent-based nail varnishes in formulations with optimized gloss and hold.
• the formulations comprising nitrocelluloses have the following drawbacks:
• plasticizers in these formulations is reflected, after filmification and drying, in particular by an evolution of the properties of the film over time, due both to a slow evaporation of the residual solvents contained in the film after drying and to a potential loss of part of the plasticizers, in particular by evaporation, resulting in hardening of the film over time and poor resistance to chipping.
• nitrocellulose Certain known formulations comprising nitrocellulose have the disadvantage of yellowing on the nail over time.
• manufacture of nitrocellulose, its transport and its incorporation into formulations pose safety problems, so much so that it is sought to replace it with other film formers.
• the applicant has discovered a new way of formulating a nail varnish without nitrocellulose, and which has good gloss and hold properties.
• This nail varnish also makes it possible to obtain a plasticization of the films without resorting to the addition of large quantities of external plasticizers, while maintaining a good level of hardness of the films and good resistance of the varnishes on the nail to impact and / or flaking and therefore an improvement in the resistance over time of the varnishes on the nail and / or their resistance to wear.
• the subject of the invention is a nail varnish composition
• a nail varnish composition comprising, in a cosmetically acceptable organic solvent, at least one linear ethylene film-forming block polymer, said composition being free of nitrocellulose, the block polymer being such that when 'It is present in sufficient quantity in the composition, the average gloss - at 20 ° of a deposit of said composition, once spread on a support, is greater than or equal to 50 out of 100.
• the subject of the invention is also a composition of nail varnish comprising, in a cosmetically acceptable medium, at least one film-forming ethylenic polymer with a linear sequence as described below, said composition being free of nitrocellulose.
• nitrocellulose is meant any nitro derivative of cellulose, in particular nitrocellulose.
• film-forming polymer means a polymer capable of forming on its own or in the presence of an auxiliary film-forming agent, a continuous and adherent film on a support, in particular on keratin materials.
• nitrocellulose-free composition means a composition containing less than 5%, preferably less than 3%, preferably less than 2%, preferably less than 1%, preferably less than 0.5%; preferably less than 0.1%, preferably less than 0.05% nitrocellulose.
• the invention a also relates to a cosmetic make-up or non-therapeutic nail care process comprising the application to the nails of at least one layer of the nail varnish composition as defined above.
• a nail varnish composition comprising at least one ethylene, linear, film-forming block polymer, said composition being free of nitrocellulose, in order to obtain a film, once spread on a support, of gloss at 20 ° greater than 50 out of 100, and incidentally which is of good behavior.
• gloss is meant the gloss as it can be measured using a gloss meter, conventionally by the following method.
• a layer lying between 50 ⁇ m and 150 ⁇ m in thickness of the composition is spread out using an automatic spreader.
• the layer covers at least the white background of the card.
• the deposit is left to dry for 24 hours at a temperature of 30 ° C., then the gloss is measured at 20 ° on the white background using a BYK GARDNER brand glossmeter and microTRI-GLOSS reference. This measurement (between 0 and 100) is repeated at least three times, and the average brightness is the average of the at least three measurements taken.
• the average gloss of the composition measured at 20 ° is advantageously greater than or equal to 50 out of 100, better still, greater than or equal to 55, better still, greater than or equal to 60, better still, greater than or equal to 65, better still, greater than or equal to 70 or better still, greater than or equal to 75 out of 100, or even greater than or equal to 80 out of 100.
• the average gloss of the composition, once spread on 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 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 average brightness at 60 ° is measured as follows.
• the gloss can be measured using a gloss meter, in a conventional manner by the following method.
• a layer lying between 50 ⁇ m and 150 ⁇ m in thickness of the composition is spread out using an automatic spreader.
• the layer covers at least the white background of the card.
• the deposit is left to dry for 24 hours at a temperature of 30 ° C., then the gloss is measured at 60 ° on the white background using a BYK GARDNER brand glossmeter and microTRI-GLOSS reference. .
• This measurement (between 0 and 100) is repeated at least three times, and the average brightness is the average of the at least three measurements taken.
• the gloss of the composition measured at 20 ° is preferably greater than or equal to 60, preferably 65, 70 or 75 out of 100, and / or the gloss of the composition measured at 60 ° is preferably greater than or equal to 80, 85 or 90 out of 100.
• composition according to the present invention contains at least one block polymer.
• block polymer is meant a polymer comprising at least 2 separate blocks, preferably at least 3 separate blocks.
• the block polymer of the composition according to the invention is an ethylenic polymer.
• ethylenic polymer is meant a polymer obtained by polymerization of monomers comprising ethylenic unsaturation.
• the block polymer of the composition. according to the invention is a linear polymer.
• a polymer with a non-linear structure is, for example, a polymer with a branched, star, grafted, or other structure.
• the block polymer of the composition according to the invention is a film-forming polymer.
• film-forming polymer is meant a polymer capable of forming on its own or in the presence of an auxiliary film-forming agent, a continuous and adherent film on a support, in particular on keratin materials.
• the block polymer of the composition according to the invention is a non-elastomeric polymer.
• non-elastomeric polymer is meant a polymer which, when subjected to a stress intended to stretch it (for example 30% relative to its initial length), does not return to a length substantially identical to its length initial when the constraint ceases.
• non-elastomeric polymer is meant a polymer having an instantaneous recovery R ⁇ 50% and a delayed recovery R 2h ⁇ 70% after having undergone an extension of 30%.
• R ⁇ 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 casting a solution of the polymer in a teflon-coated matrix and then drying for 7 days in a controlled atmosphere at 23 ⁇ 5 ° C and 50 ⁇ 10
• a film approximately 100 ⁇ m thick is then obtained from which are cut rectangular test pieces (for example with a punch) with a width of 15 mm and a length of 80 mm.
• test piece is subjected to a tensile stress using a device sold under the reference Zwick, under the same temperature and humidity conditions as for drying.
• the test pieces are drawn 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 test piece.
• the instantaneous recovery Ri is determined as follows: - the test piece is stretched by 30% ( ⁇ max ), that is to say approximately 0.3 times its initial length (l 0 ) - the stress is relaxed by imposing a return speed equal to the traction speed, ie 50 mm / min and the residual elongation of the test piece is measured in percentage, after return to zero stress ( ⁇ j).
• the instant recovery in% (R) is given by the following formula:
• the residual elongation of the test piece is measured in percentage ( ⁇ 2r ⁇ ), 2 hours after return to the zero stress.
• the delayed recovery in% (R 2h ) is given by the formula below:
• a polymer according to an embodiment of the invention has an instant recovery R of 10% and a delayed recovery R 2h of 30%.
• the block polymer of the composition according to the invention does not comprise a styrene unit.
• polymer free of styrene unit is meant a polymer comprising less than 10%, preferably less than 5%, preferably less than 2%, more preferably less than 1% by weight i) of styrene unit of formula -CH ( C 6 H 5 ) -CH 2 - or ii) of substituted styrene unit, such as for example methylstyrene, chlorostyrene or chloromethylstyrene.
• the block polymer of the composition according to the invention is derived from aliphatic ethylenic monomers.
• aliphatic monomer is meant a monomer comprising no aromatic group.
• 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 -CONk
• the ester group can be linked to one of the two carbons unsaturated by the carbon atom or the oxygen atom.
• the amide group can be linked to one of the two carbons unsaturated by the carbon atom or the nitrogen atom.
• the block polymer comprises at least a first block and at least a second block.
• a sequence is meant one or more sequences. It is specified that in the foregoing and what follows the terms “first” and “second” sequences in no way condition the order of said sequences (or blocks) in the structure of the polymer.
• the block polymer comprises at least a first block and at least a second block having different glass transition temperatures (Tg).
• the first and second sequences can be linked together by an intermediate segment having a glass transition temperature comprised between the glass transition temperatures of the first and second sequences.
• the block polymer comprises at least a first block and at least a second block linked together by 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 essentially derived from monomers constituting the first block and the second block.
• 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 a first block and at least a second block which are incompatible in the organic liquid medium of the composition of the invention.
• blocks incompatible with each other is meant that the mixture formed of the polymer corresponding to the first block and of the polymer corresponding to the second block is not miscible in the majority organic liquid 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 greater than or equal to 5% by weight, relative to the total weight of the mixture (polymers and majority organic liquid), it being understood that: i) said polymers are present in the mixture in a content such that the respective weight ratio ranges from 10/90 to 90/10, and that ii). each of the polymers corresponding to the first and second blocks has an average molecular weight (by weight or in number) equal to that of the block polymer +/- 15%.
• the organic liquid medium comprises a mixture of organic liquids
• said mixture of polymers is immiscible in at least one of them.
• the organic liquid medium comprises a single organic liquid
• the latter obviously constitutes the majority liquid by weight.
• organic liquid medium means a medium containing at least one organic liquid, that is to say, at least one organic compound liquid at room temperature
• the majority of the liquid in the organic liquid medium is a volatile or non-volatile oil (fatty substance).
• the organic liquid is cosmetically acceptable (tolerance, toxicology and feel acceptable).
• the organic liquid medium is cosmetically acceptable, in the sense that it is compatible with keratin materials, such as oils or organic solvents commonly used in cosmetic compositions.
• the majority of the liquid in the organic liquid medium is the solvent or one of the polymerization solvents for the block polymer as described below.
• polymerization solvent is meant a solvent or a mixture of solvents.
• the polymerization solvent can be chosen in particular from ethyl acetate, butyl acetate, alcohols such as isopropanol, ethanol, aliphatic alkanes such as isododecane and their mixtures.
• the polymerization solvent is a mixture of butyl acetate and isopropanol, or isododecane.
• the block polymer can be incorporated into the composition at a high dry matter content, typically more than 10%, more than 20% and more preferably more than 30% and more preferably more than 45% by weight. relative to the total weight of the composition while being easy to formulate.
• the block polymer does not include silicon atoms in its backbone.
• backbone means the main chain of the polymer, as opposed to the pendant side chains.
• the polymer according to the invention is not water-soluble, that is to say that the polymer is not soluble in water or in a mixture of water and of linear or branched lower monoalcohols having from 2 to 5 carbon atoms such as ethanol, isopropanol or n-propanol, without modification of pH, with an active material content of at least 1% by weight, at room temperature (25 ° C).
• the block polymer has a polydispersity index I greater than 2.
• the block polymer used in the compositions according to the invention has a polydispersity index I 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 greater than or equal to 2.8 and in particular, ranging from 2.8 to 6.
• the polydispersity index I of the polymer is equal to the ratio of the average mass by weight
• the average molar masses by weight (Mw) and by number (Mn) are determined by liquid chromatography by gel permeation (THF solvent, calibration curve established with linear polystyrene standards, refractometric detector).
• the weight average mass (Mw) of the block polymer is preferably less than or equal to 300,000, for example it ranges 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, for example it ranges from 10,000 to 60,000, and better still from 12,000 to 50,000.
• Each block or block of the block polymer is derived from one type of monomer or from several different types of monomer.
• each block can consist of a homopolymer or a copolymer; this copolymer constituting the sequence can be in turn statistical or alternating.
• the glass transition temperatures indicated for the first and second blocks can be theoretical Tg determined from the theoretical Tg of the constituent monomers of each of the blocks, which can be found in a reference manual such as the Polymer Handbook, 3 rd ed, 1989, John Wiley, according to the following relation, known as Fox's Law:
• Tg indicated for the first and second sequences in the present application are theoretical Tg.
• the difference between the glass transition temperatures of the first and second sequences is generally greater than 10 ° C, preferably greater than 20 ° C, and better still greater than 30 ° C.
• the block polymer comprises at least a first block and at least a second block such that the first block can be chosen from: a) a block having a Tg greater than or equal to 40 ° C, b) a block having a Tg less than or equal to 20 ° C, c) a sequence having a Tg of between 20 and 40 ° C, and the second sequence can be chosen from a category a), b) or c) different from the first sequence.
• the sequence having a Tg 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, ranging for example from 50 ° C to 120 ° C, and better still greater or 1 equal to 60 ° C, ranging for example from 60 ° C to 120 ° C.
• the block having a Tg greater than or equal to 40 ° C can be a homopolymer or a copolymer.
• the block having a Tg greater than or equal to 40 ° C. can be derived in whole or in part from one or more monomers, which are such that the homopolymer prepared from these monomers at a glass transition temperature 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 greater than or equal to 40 ° C.
• This first block can be a homopolymer, consisting of a single type of monomer (whose Tg of the corresponding homopolymer is greater than or equal to 40 ° C).
• the first block is a copolymer
• it may be derived in whole or in part from one or more monomers, the nature and concentration of which are chosen so that the Tg of the resulting copolymer is greater than or equal to 40 ° vs.
• the copolymer can for example comprise: - monomers which are such that the homopolymers prepared from these monomers have Tg 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, ranging for example from 50 ° C to 120 ° C, and better still greater than or equal to 60 ° C, ranging for example from 60 ° C to 120 ° C, and - monomers which are such ( s) that the homopolymers prepared from these monomers have Tg less than 40 ° C, chosen from monomers having a Tg of between 20 to 40 ° C and / or monomers having a Tg less than or equal to 20 ° C, for example a Tg ranging from -100 to 20 ° C, preferably less than 15 ° C, in particular ranging from - 80 ° C to 15 ° C and better still less than 10 ° C, for example ranging from -50 ° C to 0 ° C to,
• the monomers whose homopolymers have a glass transition temperature greater than or equal to 40 ° C. are preferably chosen from the following monomers, also called main monomers:
• - methacrylates of formula CH 2 C (CH 3 ) -COOR 1 in which R ⁇ represents an unsubstituted, linear or branched alkyl group containing from 1 to 4 carbon atoms, such as a methyl, ethyl or propyl group or isobutyl or R ⁇ represents a cycloalkyl group C to C 2 ⁇
• R 7 and R 8 which are identical or different, each represent a hydrogen atom or a linear or branched C 1 to C 12 alkyl group, such as an n-butyl, t-butyl, isopropyl, isohexyl, isooctyl group, or isononyl; or R 7 represents H and R 8 represents a group 1, 1 -dimethyl-3-oxobutyI, and R 'denotes H or methyl.
• monomers that may be mentioned include N-butylacrylamide, Nt-butylacrylamide, N-isopropylacrylamide, N, N-dimethylacrylamide and N, N-dibutylacrylamide,
• Particularly preferred main monomers are methyl methacrylate, isobutyl (meth) acrylate, isobomyl (meth) acrylate and mixtures thereof.
• the sequence having a Tg 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, in particular ranging from -80 ° C to 15 ° C and better still or equal to 10 ° C, for example ranging from -50 ° C to 0 ° C.
• the block having a Tg less than or equal to 20 ° C can be a homopolymer or a copolymer.
• the block having a Tg less than or equal to 20 ° C. can be derived wholly or in part from one or more monomers, which are such that the homopolymer prepared from these monomers has a lower glass transition temperature 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 less than or equal to 20 ° C.
• This second block can be a homopolymer, consisting of a single type of monomer (whose Tg of the corresponding homopolymer is less than or equal to 20 ° C).
• the block having a Tg of less than or equal to 20 ° C. is a copolymer, it may be derived wholly or in part from one or more monomers, the nature and concentration of which are chosen so that the Tg of the resulting copolymer is less than or equal to 20 ° C.
• - one or more monomers whose corresponding homopolymer has a Tg less than or equal to 20 ° C, for example a Tg ranging from -100 ° C to 20 ° C, preferably less than 15 ° C, in particular ranging from - 80 ° C at 15 ° C and better still below 10 ° C, for example ranging from -50 ° C to 0 ° C and
• one or more monomers whose corresponding homopolymer has a Tg greater than 20 ° C such as the monomers having a Tg 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, ranging for example from 50 ° C to 120 ° C, and better still greater than or equal to 60 ° C, ranging for example from 60 ° C to 120 ° C and / or the monomers having a Tg of between 20 and 40 ° C, as described above.
• the monomers having a Tg 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, ranging for example from 50 ° C to 120 ° C, and better still greater than or equal to 60 ° C, ranging for example from 60 ° C to 120 ° C and / or the monomers having a Tg of between 20 and 40 ° C, as described above.
• the block having a Tg less than or equal to 20 ° C is a homopolymer.
• the monomers whose homopolymer has a Tg of 20 ° C or less are preferably chosen from the following monomers, or main monomers:
• R 3 representing a linear or branched unsubstituted C1 to C 12 alkyl group, with the exception of the tert-butyl group, in which there are optionally intercalated one or more heteroatoms chosen from O, N, S,
• R 4 representing a linear or branched C 6 to C 2 unsubstituted alkyl group, in which there are optionally intercalated one or more heteroatoms chosen from 0, N and S;
• R 5 -CO-O-CH CH 2 where R 5 represents a linear or branched C 4 to C ⁇ 2 alkyl group;
• N-alkyl acrylamides such as N-octylacrylamide
• the main monomers which are particularly preferred for the block having a Tg of less than or equal to 20 ° C. are alkyl acrylates, the alkyl chain of which comprises from 1 to 10 carbon atoms, with the exception of the tert-butyl group, such as methyl, isobutylacrylate, 2-ethylhexylacrylate and mixtures thereof.
• the block which has a Tg of between 20 and 40 ° C can be a homopolymer or a copolymer.
• the block having a Tg of between 20 and 40 ° C. can be derived wholly or in part from one or more monomers, which are such that the homopolymer prepared from these monomers has a glass transition temperature comprised between 20 and 40 ° C.
• the block having a Tg of between 20 and 40 ° C can be derived in whole or in part from monomers which are such that the homopolymer corresponding to a Tg greater than or equal to 40 ° C and from monomers which are such ( s) that the corresponding homopolymer has a Tg less than or equal to 20 ° C.
• this block is a homopolymer, it comes from monomers (or main monomer), which are such that the homopolymers prepared from these monomers have glass transition temperatures between 20 and 40 ° C.
• This first block can be a homopolymer, consisting of a single type of monomer (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, cyclodecylacrylate, neopentylacrylate, Pisodecylacrylamide and their mixtures.
• the block having a Tg of between 20 and 40 ° C is a copolymer, it comes in whole or in part from one or more monomers (or main monomer), the nature and concentration of which are chosen such that so that the Tg of the resulting copolymer is between 20 and 40 ° C.
• the block having a Tg of between 20 and 40 ° C is a copolymer resulting in whole or in part:
• Tg greater than or equal to 40 ° C
• a Tg ranging from 40 ° C to 150 ° C, preferably greater than or equal to 50 ° C, ranging for example from 50 to 120 ° C, and better still greater than or equal to 60 ° C, ranging for example from 60 ° C to 120 ° C, as described above, and / or
• - main monomers whose corresponding homopolymer has a Tg 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, in particular ranging from -80 ° C at 15 ° C and better still less than or equal to 10 ° C, for example ranging from -50 ° C to 0 ° C, as described above, said monomers being chosen so that the Tg of the copolymer forming the first block is between 20 and 40 ° C.
• Such main monomers are, for example, chosen from methyl methacrylate, isrycylate and isobornyl methacrylate, butylacrylate, 2-ethylhexylacrylate and mixtures thereof.
• the proportion of the second block having a Tg less than or equal to 20 ° C. ranges from 10 to 85% by weight of the polymer, better from 20 to 70% and even better still from 20 to 50%.
• each of the first and second blocks comprises at least one monomer chosen from acrylic acid, acrylic acid esters, (meth) acrylic acid, (meth) acrylic acid esters and their mixtures.
• each of the first and second blocks is derived entirely from at least one monomer chosen from acrylic acid, esters of acrylic acid, (meth) acrylic acid, esters of (meth) acrylic acid and their mixtures.
• Each of the blocks may nevertheless contain a minority proportion of at least one constituent monomer of the other block.
• the first block can contain at least one constituent monomer of the second block and vice versa.
• Each of the first and / or second block may (come) t include, in addition to the monomers indicated above, one or more other monomers called additional monomers, different from the main monomers mentioned above.
• This additional monomer is for example chosen from: hydrophilic monomers such as:
• ethylenically unsaturated monomers comprising at least one carboxylic or sulfonic acid function, for example: acrylic acid, methacrylic acid, crotonic acid, maleic anhydride, itaconic acid, fumaric acid, maleic acid, acrylamidopropanesulfonic acid, vinylbenzoic acid, vinylphosphoric acid and the salts thereof,
• - ethylenically unsaturated monomers comprising at least one tertiary amine function such as 2-vinylpyridine, 4-vinylpyridine, dimethylaminoethyl methacrylate, diethylaminoethyl methacrylate, dimethylaminopropyl methacrylamide and the salts thereof ,
• R 6 represents a linear or branched alkyl group containing from 1 to 4 carbon atoms, such as a methyl, ethyl, propyl or isobutyl group, said alkyl group being substituted by one or more substituents chosen from hydroxyl groups (such as 2-hydroxypropyl methacrylate, 2-hydroxyethyl methacrylate) and halogen atoms (Cl, Br, I, F), such as trifluoroethyl methacrylate,
• R 9 representing a linear or branched C 6 to C 12 alkyl group, in which there are optionally intercalated one or more heteroatoms chosen from 0, N and S, said alkyl group being substituted by one or more substituents chosen from hydroxyl groups and halogen atoms (Cl, Br, I, F);
• R 10 representing a linear or branched C 12 -C 12 alkyl group substituted by one or more substituents chosen from hydroxyl groups and halogen atoms (Cl,
• R 10 represents (CC 12 ) -O-POE (polyoxyethylene) alkyl with repetition of the oxyethylene unit from 5 to 30 times, for example methoxy-POE, or R 10 represents a polyoxyethylene group comprising from 5 to 30 ethylene oxide units
• ethylenically unsaturated monomers comprising one or more silicon atoms such as methacryloxypropyl trimethoxy silane, methacryloxypropyl tris (trimethylsiloxy) silane, and mixtures thereof.
• Particularly preferred additional monomers are acrylic acid, methacrylic acid, trifluoroethyl methacrylate and mixtures thereof.
• each of the first and second blocks of the block polymer comprises at least one monomer chosen from esters of (meth) acrylic acid and optionally at least one additional monomer such as (meth) acrylic acid, and their mixtures.
• each of the first and second blocks of the block polymer is derived entirely from at least one monomer chosen from esters of (meth) acrylic acid and optionally from at least one additional monomer such as (meth) acrylic acid, and mixtures thereof.
• the block polymer is a non-silicone polymer, that is to say a polymer free of silicon atom.
• This or these additional monomers generally represent (s) an amount 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 of the total weight of the first and / or second sequences.
• the block polymer can be obtained by radical polymerization in solution according to the following preparation process: part of the polymerization solvent is introduced into a suitable reactor and heated until reaching the temperature suitable for polymerization (typically between 60 and
• the constituent monomers of the first block are introduced in the presence of part of the polymerization initiator, at the end of a time T corresponding to a maximum conversion rate of 90%, the constituent monomers of the second block and the other part of the initiator are introduced, the mixture is allowed to react for a time T '(ranging from 3 to 6 h) at the end of which the mixture is brought to room temperature, the polymer is obtained in solution in the polymerization solvent.
• the block polymer comprises a first block having a Tg greater than or equal to 40 ° C, as described above in a) and a second block having a Tg less than or equal to 20 ° C, such that described above in b).
• the first block having a Tg 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 greater than or equal to 40 ° C, such than the monomers described above.
• the second block having a Tg 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 less than or equal to 20 ° C. , such as the monomers described above.
• the proportion of the block having a Tg greater than or equal to 40 ° C. ranges from 20 to 90% by weight of the polymer, better from 30 to 80% and even better still from 50 to 70%.
• the proportion of the block having a Tg of less than or equal to 20 ° C. ranges from 5 to 75% by weight of the polymer, preferably from 15 to 50% and better still from 25 to 45%.
• the polymer according to the invention can comprise:
• a first sequence of Tg 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,
• the polymer according to the invention can comprise:
• a first Tg sequence greater than or equal to 40 ° C for example ranging from 70 to 100 ° C, which is a methyl methacrylate / acrylic acid / trifluoroethyl methacrylate copolymer
• a second Tg sequence less than or equal to 20 ° C for example ranging from 0 to 20 ° C, which is a methyl acrylate homopolymer and '
• an intermediate block which is a random copolymer of methyl methacrylate / acrylic acid / methyl acrylate / trifluoroethyl methacrylate.
• the. polymer according to the invention can comprise:
• Tg less than or equal to 20 ° C, for example ranging from -85 to - 55 ° C, which is a homopolymer of 2-ethylhexyl acrylate and - an intermediate block which is a random copolymer acrylate isobornyl / isobutyl methacrylate / 2-ethylhexyl acrylate.
• the polymer according to the invention can comprise:
• Tg less than or equal to 20 ° C, for example ranging from -85 to - 55 ° C, which is a homopolymer of 2-ethylhexyl acrylate and
• An intermediate block which is a random copolymer of isobornyl acrylate / methyl methacrylate / 2-ethylhexyl acrylate.
• the polymer according to the invention can comprise:
• Tg less than or equal to 20 ° C, for example ranging from -85 to - 55 ° C, which is a homopolymer of 2-ethylhexyl acrylate and
• an intermediate block which is a random copolymer of isobornyl acrylate / isobornyl methacrylate / 2-ethylhexyl acrylate.
• the polymer according to the invention can comprise: a first block of Tg greater than or equal to 40 ° C, for example ranging from 85 to 115 ° C, which is an isobornyl methacrylate / methacrylate copolymer isobutyl, a second sequence of Tg less than or equal to 20 ° C, for example ranging from -35 to -5 ° C, which is a homopolymer of isobutyl acrylate and
• an intermediate block which is a random copolymer of isobornyl methacrylate / isobutyl methacrylate / isobutyl acrylate.
• the polymer according to the invention can comprise:
• Tg less than or equal to 20 ° C, for example ranging from -35 to -5 ° C, which is a homopolymer of isobutyl acrylate and
• an intermediate block which is a random copolymer of isobornyl acrylate / isobornyl methacrylate / isobutyl acrylate.
• the polymer according to the invention can comprise: a first sequence of Tg greater than or equal to 40 ° C, for example ranging from 60 to 90 ° C, which is an isobornyl acrylate / methacrylate copolymer isobutyl,
• Tg less than or equal to 20 ° C, for example ranging from -35 to -5 ° C, which is a homopolymer of isobutyl acrylate and
• an intermediate block which is a random copolymer of isobornyl acrylate / isobutyl methacrylate / isobutyl acrylate.
• the mixture is kept for 3 hours at 90 ° C., then diluted with 105 g of butyl acetate and 45 g of isopropanol, then the whole is cooled.
• a polymer comprising a first block or poly (methyl methacrylate / acrylic acid) block having a Tg of 100 ° C. a second block or poly methyl acrylate block having a Tg of 10 ° C. and an intermediate block which is a random polymer methyl methacrylate / acrylic acid / methyl polyacrylate.
• This polymer has an average mass by weight of 52,000 and a number average mass by 18,000, ie a polydispersity index I of 2.89
• the block polymer comprises a first block having a glass transition temperature (Tg) of between 20 and 40 ° C, in accordance with the sequences described in c) and a second block having a lower glass transition temperature or equal to 20 ° C, as described above in b) or a glass transition temperature greater than or equal to 40 ° C, as described in a) above.
• Tg glass transition temperature
• the proportion of the first block having a Tg of between 20 and 40 ° C ranges from 10 to 85% by weight of the polymer, better from 30 to 80% and even better still from 50 to 70%.
• the second block is a block having a Tg greater than or equal to 40 ° C., it is preferably present in a proportion ranging from 10 to 85% by weight of the polymer, better from 20 to 70% and even better still from 30 to 70 %.
• the second block is a block having a Tg less than or equal to 20 ° C.
• it is preferably present in a proportion ranging from 10 to 85% by weight of the polymer, better from 20 to 70% and even better still from 20 to 50 %.
• the first block having a Tg of between 20 and 40 ° C is a copolymer derived from monomers which are such that the homopolymer corresponding to a Tg greater than or equal to 40 ° C and from monomers which are such ( s) that the corresponding homopolymer has a Tg less than or equal to 20 ° C.
• the second block having a Tg less than or equal to 20 ° C or having a Tg greater than or equal to 40 ° C is a homopolymer.
• the block polymer can comprise: a first block of Tg of between 20 and 40 ° C, for example having a Tg of 25 to 39 ° C, which is a copolymer comprising at at least one methyl acrylate monomer, at least one methyl methacrylate monomer and at least one acrylic acid monomer,
• an intermediate block comprising at least one methyl acrylate, methyl methacrylate monomer
• an intermediate block comprising, with methyl methacrylate, at least one acrylic acid monomer and at least one methyl acrylate monomer.
• the block polymer can comprise:
• a first Tg block of between 20 and 40 ° C for example having a Tg of 21 to 39 ° C, which is a copolymer comprising isobornyl acrylate / isobutyl methacrylate / 2-ethylhexyl acrylate,
• a second sequence of Tg less than or equal to 20 ° C for example ranging from -65 to - 35 ° C, which is a homopolymer of methyl methacrylate and
• an intermediate block which is a random copolymer of isobornyl acrylate / isobutyl methacrylate / 2-ethylhexyl acrylate.
• the block polymer can comprise:
• a first Tg block of between 20 and 40 ° C for example having a Tg of 21 to 39 ° C, which is an isobomyl acrylate / methyl acrylate / acrylic acid copolymer
• a second higher Tg block or equal to 40 ° C for example ranging from 85 to 115 ° C, which is an isobornyl acrylate homopolymer and an intermediate block which is a random copolymer of isobornyl acrylate / methyl acrylate / acrylic acid.
• the polymers corresponding to this second embodiment can be produced as follows.
• Example 2 Preparation of a poly (methyl methacrylate / methyl acrylate / acrylic acid) polymer
• the mixture is kept for 3 hours at 90 ° C., then diluted with 105 g of butyl acetate and 45 g of isopropanol, then the whole is cooled.
• the polymer obtained comprises a first poly block or block (methyl acrylate / methyl methacrylate / acrylic acid) having a Tg of 35 ° C. a second poly block or block (methyl methacrylate) having a Tg of 100 ° C. and a block intermediate which is a random polymer methyl methacrylate / acrylic acid / poly methyl acrylate.
• compositions of the invention contain from 0.1 to 60% by weight, preferably from 0.5 to 50% by weight, and more preferably from 1 to 40% by weight of the block polymer according to the invention.
• the cosmetic composition can comprise an organic solvent or a mixture of organic solvents.
• the organic solvent can be chosen from: ketones liquid at room temperature such as methyl ethyl ketone, methyl isobutyl ketone, diisobutyl ketone, Pisophorone, cyclohexanone, acetone; - Alcohols liquid at room temperature such as ethanol, isopropanol, diacetone alcohol, 2-butoxyethanol, cyclohexanol; glycols which are liquid at room temperature such as ethylene glycol, propylene glycol, pentylene glycol, glycerol; propylene glycol ethers that are liquid at room temperature such as propylene glycol monomethyl ether, propylene glycol monomethyl ether acetate, dipropylene glycol mono n-butyl ether; cyclic ethers such as ⁇ -butyrolactone; short chain esters (having 3 to 8 carbon atoms in total) such as ethy
• the organic solvent medium has a polarity P ranging from 0.442 to 0.725.
• the polarity is defined according to the solubility parameters according to the Hansen solubility space according to the following relation:
• the polarity is determined from the solubility parameters of the mixture which are themselves determined from those of the compounds taken separately, according to the following relationships:
• ⁇ dmel ⁇ xi ⁇ di
• ⁇ pmel ⁇ xi ⁇ pi
• ⁇ hmel ⁇ xi ⁇ hi
• xi represents the volume fraction of compound i in the mixture.
• organic solvent having a polarity ranging from 0.442 to 0.725 there may be mentioned in particular methyl acetate, isopropyl acetate, methoxypropyl acetate, butyl lactate, acetone, methyl ethyl ketone, diacetone alcohol, D-butyrolactone, tetrahydrofuran, propylene carbonate, ethyl 3-ethoxypropionate, dimethylsulfoxide, and mixtures thereof.
• the organic solvent medium can represent from 10 to 95% by weight, relative to the total weight of the composition, preferably from 15% to 80% by weight, and better still from 20 to 60% by weight.
• composition can comprise, in addition to the block polymer of the composition according to the invention, an additional polymer such as a film-forming polymer.
• the film-forming polymer can be chosen in particular from cellulose polymers such as cellulose acetate, cellulose acetobutyrate, cellulose acetopropionate, ethyl cellulose, or alternatively polyurethanes, acrylic polymers, vinyl polymers , polyvinylbutyrals, alkyd resins, resins derived from aldehyde condensation products such as arylsulfonamide formaldehyde resins such as toluene sulfonamide formaldehyde resin, aryl sulfonamide epoxy resins.
• toluene sulfonamide formaldehyde resin "Ketjentflex MS80” from the company AKZO or "Santolite MHP", “Santolite MS 80” from the company FA ⁇ ONNIER or “RESIMPOL 80” from the company PAN AMERICANA, the alkyd resin “BECKOSOL ODE 230-70-E” from the company DAINIPPON, the acrylic resin “ACRYLOID B66” from the company ROHM & HAAS, the polyurethane resin "TRIXENE PR 4127" from the company BAXENDEN.
• the additional film-forming polymer may be present in the composition according to the invention in a content ranging from 0.1% to 60% by weight, relative to the total weight of the composition, preferably ranging from 2% to 40% by weight, and better from 5% to 25% by weight.
• the composition can also comprise at least one plasticizing agent.
• plasticizers such as: glycols and their derivatives such as diethylene glycol ethyl ether, diethylene glycol methyl ether, diethylene glycol butyl ether or diethylene glycol hexyl ether, ethylene glycol ethyl ether , ethylene glycol butyl ether, ethylene glycol hexyl ether; glycerol esters, propylene glycol derivatives and in particular propylene glycol phenyl ether, propylene glycol diacetate, dipropylene glycol butyl ether, tripropylene glycol butyl ether, propylene glycol methyl ether, dipropylene glycol ethyl ether, tripropylene glycol methyl ether and diethylene methyl ether glycol, propylene glycol butyl ether, esters of acids, in particular carboxylic acids, such as
• the amount of plasticizer can be chosen by a person skilled in the art on the basis of his general knowledge, so as to obtain a composition having cosmetically acceptable properties.
• the plasticizing agent is present in an amount of less than 20%, preferably less than 15% and better still less than 10%, even better still less than 5% by weight relative to the total weight of the composition.
• the composition according to the invention is free of plasticizing agent.
• composition according to the invention may also comprise one or more coloring materials chosen from water-soluble dyes, and pulverulent coloring materials such as pigments, nacres and flakes well known to those skilled in the art.
• the coloring matters can be present, in the composition, in a content ranging from 0.01% to 50% by weight, relative to the weight of the composition, preferably from 0.01% to 30% by weight.
• pigments should be understood to mean particles of any shape, white or colored, mineral or organic, insoluble in the physiological medium, intended to color the composition.
• the pigments can be white or colored, mineral and / or organic.
• mineral pigments mention may be made of titanium dioxide, optionally surface-treated, zirconium or cerium oxides, as well as oxides of zinc, iron (black, yellow or red) or chromium, violet of manganese, ultramarine blue, chromium hydrate and ferric blue, metallic powders such as aluminum powder, copper powder.
• organic pigments mention may be made of carbon black, D & C type pigments, and lakes based on cochineal carmine, barium, strontium, calcium, aluminum.
• the pearlescent pigments can be chosen from white pearlescent pigments such as mica coated with titanium or bismuth oxychloride, colored pearlescent pigments such as titanium mica coated with iron oxides, mica titanium coated with in particular blue ferric or chromium oxide, titanium mica coated with an organic pigment of the aforementioned type as well as pearlescent pigments based on bismuth oxychloride.
• the water-soluble dyes are, for example, beet juice, methylene blue.
• the composition according to the invention may also further comprise one or more fillers, in particular in a content ranging from 0.01% to 50% by weight, relative to the total weight of the composition, preferably ranging from 0.01 % to 30% by weight. By fillers, it is necessary to understand particles of any shape, colorless or white, mineral or synthetic, insoluble in the medium of the composition regardless of the temperature at which the composition is produced. These charges are used in particular to modify the rheology or the texture of the composition.
• the fillers can be mineral or organic in any form, platelet, spherical or oblong, whatever the crystallographic form (for example sheet, cubic, hexagonal, orthoromic, etc.). Mention may be made of talc, mica, silica, kaolin, polyamide (Nylon®) (Orgasol® from Atochem), poly- ⁇ -alanine and polyethylene powders, powders of tetrafluoroethylene polymers (Teflon®) ), lauroyl-lysine, starch, boron nitride, polymeric hollow microspheres such as those of polyvinylidene chloride / acrylonitrile such as Expancel® (Nobel Industry), copolymers of acrylic acid (Polytrap® from Dow Corning) and silicone resin microbeads (Toshiba's Tospearls®, for example), elastomeric polyorganosiloxane particles, precipitated calcium carbonate, magnesium carbonate and hydro carbonate,
• composition may further comprise other ingredients commonly used in cosmetic compositions.
• ingredients can be chosen from spreading agents, wetting agents, dispersing agents, anti-foaming agents, preservatives, UV filters, active agents, surfactants, moisturizing agents, perfumes, neutralizers, stabilizers, antioxidants.
• the present invention also relates to a cosmetic assembly comprising:
• composition placed inside said compartment, the composition being in accordance with the invention.
• the container can be in any suitable form. It can in particular be in the form of a bottle, a case or a tube.
• the closure element may be in the form of a removable plug.
• the container is preferably equipped with an applicator to allow the application of the product to the nails.
• an applicator can be in the form of a brush consisting of at least one tuft of bristles.
• the tuft of bristles can be implanted at the end of a rod carried by the closure element.
• the bristles are oriented along the axis of the rod.
• the bristles can be implanted by means of a staple, glued, or obtained from molding.
• the applicator is in the form of a nozzle made of porous material, in particular open cell foam or felt.
• the applicator may be in the form of a spatula, in particular made of elastomeric material.
• the closure element can be coupled to the container by screwing.
• the coupling between the closure element and the container is done other than by screwing, in particular via a bayonet mechanism or, by snap-fastening.
• snap-fastening is meant in particular any system involving the crossing of a bead or a bead of material by elastic deformation of a portion, in particular of the closure element, then by return to the non-elastically stressed position of said portion after crossing the bead or cord.
• the container is preferably made of glass. However, materials other than glass can be used. By way of example, mention may be made of certain thermoplastic materials, chosen in an appropriate manner to be compatible with the composition. Alternatively again, the container can be made of metal.

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