EP0783529A1 - Polymeres fonctionnalises, leur procede de synthese, leur utilisation comme agents tensioactifs en particulier dans des compositions cosmetiques et notamment des vernis a ongle - Google Patents
Polymeres fonctionnalises, leur procede de synthese, leur utilisation comme agents tensioactifs en particulier dans des compositions cosmetiques et notamment des vernis a ongleInfo
- Publication number
- EP0783529A1 EP0783529A1 EP95932803A EP95932803A EP0783529A1 EP 0783529 A1 EP0783529 A1 EP 0783529A1 EP 95932803 A EP95932803 A EP 95932803A EP 95932803 A EP95932803 A EP 95932803A EP 0783529 A1 EP0783529 A1 EP 0783529A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- polymer
- chain
- monomer
- functionalized polymer
- radical polymerization
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K8/00—Cosmetics or similar toiletry preparations
- A61K8/02—Cosmetics or similar toiletry preparations characterised by special physical form
- A61K8/04—Dispersions; Emulsions
- A61K8/042—Gels
-
- 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
- A61K8/90—Block copolymers
-
- 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
- C08F2/00—Processes of polymerisation
- C08F2/38—Polymerisation using regulators, e.g. chain terminating agents, e.g. telomerisation
-
- 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
- A61K2800/57—Compounds covalently linked to a(n inert) carrier molecule, e.g. conjugates, pro-fragrances
Definitions
- Functionalized polymers their method of synthesis, their use as surfactants in particular in cosmetic compositions and in particular nail varnishes.
- the present invention relates to new functionalized polymers, their synthesis process and their uses as surfactants, in particular as wetting agents and / or dispersants and / or stabilizers for dispersions of solid particles and for preparing microdispersions.
- Y. YAMASHITA, Y. CHUJO, H. KOBAYASHI and KAWAKAMI describe in Polym. Bull., 5, 361-366 (1981) macromonomers of general formula (PMMA) SCH (COOH) CH2COOH as well as other acrylic macromonomers having the same terminal function. All these macromonomers are intended to be used in polycondensation operations.
- the functionalized macromonomers are used as reaction intermediate products in the preparation of other macromo ⁇ omers or directly as macromonomers for carrying out polycondensation or coupling reactions.
- US Pat. No. 5,298,585 describes polymers functionalized at the end of the chain obtained by polymerization in an aqueous medium in the presence of a chain transfer agent of the amine-thiol type.
- the products described in this document are water-soluble polymers which contain a maximum of 80% and preferably 60% of unsaturated monomers other than of the acid type. These are therefore products whose polymer chain has an essentially hydrophilic character and which, consequently, have no surfactant character since the polymer chain which constitutes them is essentially hydrophilic. Even if some of these products may have a dispersing character, this character is in no way linked to surfactant properties but simply to the polarity of the group attached to the polymer chain.
- the present invention relates to the use of a family of products having the same advantages as those described above with regard to their dispersing, stabilizing and wetting power but also having a surfactant nature and which are moreover capable of being used in cosmetic dispersions.
- the invention relates to a functionalized polymer corresponding to the formula:
- (P) is a hydrophobic polymer chain obtained by radical polymerization of at least one monomer, S represents sulfur, X represents:
- F represents a COOH group, or NH2, in free or salified form with the exception of the macromonomers -dicarboxylic resulting from the radical polymerization of a monomer in the presence of a chain transfer agent consisting of thiomalic acid.
- the invention relates to a process for preparing the products described above.
- the functionalized polymer results from the radical polymerization of at least one monomer in the presence of a thiol corresponding to the formula HSXF or a disulfide corresponding to the formula FX- SSXF in which X and F have the meanings given above, said thiol or disulfide acting as chain transfer agent during said radical polymerization of said monomer (s) leading to the formation of the polymer chain (P) as defined previously, said thiol being different from thiomalic acid.
- This process is a process directly inspired by that described in the work of YAMASHITA, CHUJO et al. cited above.
- the disulfide due to its intermediate transformation into a thiol radical under the reaction conditions can also be used as chain transfer agent to prepare the functionalized polymers of the invention.
- This reaction is performed in a solvent medium, for example THF in the presence of a radical polymerization initiator, for example azobisisobutyronitrile (AIBN) at a temperature of about 60 ° C.
- a radical polymerization initiator for example azobisisobutyronitrile (AIBN)
- the functionalized polymers according to the invention may advantageously be prepared in a process by analogy inspired by the scheme reaction (I) above, choosing lc (s) monomer (s) and thiol according to the final product targeted.
- the radical polymerization reaction of the monomer (s) will be carried out in a solvent medium, in the presence of a radical polymerization agent consisting of an organosoluble initiator, preferably chosen from the family of azo initiators.
- AIBN azobisisobutyronitrile
- the reaction takes place in a solvent medium.
- the solvent or mixture of solvents will be chosen according to the nature of the monomer (s) to be polymerized and of the thiol.
- the solvent or mixture of solvents will be chosen according to the nature of the reagents. Preferably, it will be a solvent or a mixture of solvents capable of dissolving all of the reactants present, namely the monomers, the polymer formed, the initiator and the transfer agent.
- the solvent may have an acidic character, for example, acetic acid will be used; it can also have a basic character, for example, dimethylethanolamine.
- the reaction temperature will advantageously be between 30 ° C and 120 ⁇ C, but must be adjusted depending on the reagents present. It is easily understood that it depends on the nature of the initiator and on the nature of the solvent.
- the molecular weight of the functionalized polymer resulting from the process described above will be controlled by varying the amount of chain transfer agent introduced.
- the proportions of initiator, transferor and monomer (s) can be calculated according to the conventional relationship known for chain transfer:
- - S / M is the thiol / monomer molar ratio to be used - Os is the transfer constant depending on the nature of the monomer (s), the transfer agent, the temperature and the solvent
- - DPno is the degree of polymerization of the polymer that would have been obtained in the absence of transfer agent.
- a thiol corresponding to the formula HSXF where X and F have the meanings given above will be used as chain transfer agent.
- a disulfide of formula FXSSXF it is possible to use as chain transfer agent a disulfide of formula FXSSXF, insofar as this disulfide is capable of splitting into two FXS- radicals under the conditions of radical polymerization, these two radicals acting analogous to what happens in the presence of the corresponding thiol HSXF.
- thiols useful for the preparation of the compounds according to the invention are all the compounds corresponding to the formula HSXF in which: X represents: - a saturated or unsaturated hydrocarbon chain, linear or branched, comprising 1 to 6 carbon atoms and substituted by at at least one COOH or NHo group, free or salified
- a peptide chain consisting of 2 to 4 amino acids, in particular natural, F represents a COOH or NH2 group, in free or salified form with the exception of thiomalic acid.
- the disulfides useful for preparing the functionalized polymers according to the invention are the disulfides corresponding to the formula F-X-S-S-X-F where X and F have the meanings given above.
- Particularly preferred functionalized polymers according to the invention are those in which the part F-X comprises at least one carboxylic function and at least one amine function in free or salified form.
- polymers examples include those in which the chain transfer agent is cysteine or homocysteine.
- Such a functionalized polymer depending on whether it is in free or salified form, corresponds to one of the formulas:
- (P) is a hydrophobic polymer chain resulting from the radical polymerization of at least one monomer.
- (P) is a hydrophobic polymer chain resulting from the radical polymerization of at least one monomer.
- (P) - S- CR, - CH- NH - CO- (CH - ⁇ - CH NH ⁇ - CO, HO CNH-CH j COOH in which the COOH and / or NH2 functions can be free or salified and where ( P) is a hydrophobic polymer chain obtained by radical polymerization of at least one monomer.
- Such polymers are obtained according to the process of the invention by radical polymerization of at least one monomer leading to the formation of the polymer chain (P) in the presence of glutathione acting as chain transfer agent.
- the invention also relates to functionalized polymers obtained by radical polymerization of at least one monomer in the presence of a peptide carrying at least one disulfide group and / or at least one thiol function.
- Such products due to the presence of at least one mobile hydrogen constituted by the hygrogen (s) of the thiol functions, can act as chain transfer agent in the polymerization leading to the formation of the polymer chain ( P).
- the polymer chain P
- (P) may consist of any hydrophobic polymer chain capable of being obtained by radical polymerization of at least one monomer.
- acrylic monomers mention will be made most particularly of the acrylates, methacrylates, ethylacrylates of a C1 to C18 hydrocarbon group, saturated or unsaturated, in particular allylic, linear, branched or comprising a ring.
- a preferred monomer according to the invention is methyl methacrylate.
- the polymer chain will then consist of polymethyl methacrylate (PMMA).
- PMMA polymethyl methacrylate
- vinyl monomers mention will be made in particular of styrene, alpha-methyl styrene, substituted styrenes, acrylonitrile, vinyl esters such as vinyl acetate.
- the most advantageous compounds according to the invention are those for which the polymer chain (P) has a number-average molar mass of between 500 and 250,000.
- the functionalized polymers can be in salified form or not.
- the surfactant properties of the functionalized polymers described above can also be manifested in liquid / liquid systems.
- liquid / liquid systems examples include oil-in-water emulsions, cau-in-oil emulsions as well as systems constituting the starting systems intended to be polymerized to prepare a latex.
- the functionalized polymer can be either in salified form or in free form, but it will preferably be in salified form, which increases its emulsifying power.
- these same functionalized polymers after neutralization, where appropriate, of the COOH or NH2 groups have interesting surfactant properties, allowing in particular their use for the preparation of microdispersions of polymers in particular in the form of microlatex and microgcls.
- the invention relates to the use of the functionalized polymer corresponding to the formula: (P) - S - X - F (1 ') in which:
- (P) is a hydrophobic polymer chain of number average molar mass of between 500 and 250,000, S represents sulfur, X represents: - a saturated or unsaturated, linear or branched hydrocarbon chain, comprising 1 to 6 carbon atoms and substituted by at least one COOH or NH2 group in free or salified form - a peptide chain consisting of 2 to 4 amino acids, in particular, natural,
- F represents a COOH or NH2 group in free or salified form, or of a polymer resulting from the radical polymerization of at least one monomer leading to a polymer chain of hydrophobic character in the presence of a peptide carrying at least one group disulfide and / or at least one thiol function, such as a keratin hydrolyzate, as surfactant.
- the Applicant has more particularly highlighted the surfactant properties of the functionalized polymers defined above by studying their effect on the surface tension of a solid surface or of a particle.
- adsorption isotherms representing the adsorption rate of the functionalized polymer as a function of the initial concentration of the functionalized polymer at a given temperature.
- the effectiveness of the wetting and / or dispersing and / or stabilizing agent is characterized by the minimum amount of functionalized polymer to be employed in order to reach the plateau of the adsorption isotherm and cover the entire surface of the particle.
- the invention also relates to the use of the surfactants defined above as a wetting agent for a solid surface or a solid particle.
- the Applicant has also demonstrated the significant reduction in the amount of aggregates formed between the particles and / or in their size in the presence of functionalized polymer in the medium. This effect highlights the dispersing nature of the products according to the invention.
- the invention therefore also relates to the use of functionalized polymers of the family (1 ′) as well as polymers resulting from the radical polymerization of at least one monomer leading to the formation of a polymeric chain of hydrophobic nature in the presence a peptide carrying at least one disulfide group and / or at least one thiol function, such as a keratin hydrolyzate, as dispersing agents for solid particles in an organic medium.
- the Applicant has also demonstrated that the functionalized polymers defined above constituted remarkable stabilizing agents for dispersions of solid particles in organic media and made it possible in particular to obtain dispersions whose supernatant does not become clear for at least 24 hours. for polymer contents corresponding to the level of the adsorption isotherm.
- the solid particles can be of any type and advantageously have dimensions of between a few nanometers and a few millimeters, preferably between 50 nm and 100 ⁇ m.
- It may in particular be mineral particles, in particular particles of metal oxides, for example Ti ⁇ 2, Si ⁇ 2, Al2O3, iron oxides, such as goethite, hematite or magnetitc. It can also be metallic oxide particles coated with organic dye molecules.
- It can also be organic particles, for example of the rosinate type, coprecipitated with an organic dye.
- the organic medium used to carry out the treatment of the solid particles can be any solvent of the polymer chain (P).
- the solvent will advantageously be chosen from esters such as methyl, ethyl, butyl or amyl acetate, ketones such as acetone, methyl ethyl ketone or cyclohexanonc, chlorinated solvents such as chloroform or dichloromethane, or others such as toluene, acetic acid.
- esters such as methyl, ethyl, butyl or amyl acetate
- ketones such as acetone, methyl ethyl ketone or cyclohexanonc
- chlorinated solvents such as chloroform or dichloromethane, or others such as toluene, acetic acid.
- mixtures of a PMMA solvent with a PMMA non-solvent in proportions keeping this sequence soluble, such as for example a butyl acetate / ethanol or isopropanol mixture containing at least 50% butyl acetate.
- the stabilizing effect of the dispersion is only appreciable from a number average molecular weight of the polymer greater than 1,000, preferably between 5,000 and 150,000.
- the invention applies very particularly to the dispersion of titanium oxide particles, in particular particles with dimensions between 50 nm and 1 ⁇ m.
- the adsorption yield is determined as follows: a mass m s of solution of initial concentration Ci in polymer is brought into contact with a mass m c of particles with a specific surface S. After adsorption, it is determined, after removal of the particles by centrifugation, the new concentration (Ce) of the solution.
- the invention relates to stable dispersions of solid particles in a solvent or a mixture of solvents, in which the dispersing agent is a functionalized polymer corresponding to formula (1 ') as defined above. or a polymer resulting from the polymerization of at least one monomer leading to a hydrophobic polymer chain, in the presence of a peptide carrying at least one disulfide group and / or at least one thiol function, such as a hydrolyzate of keratin, said solvent or mixture being a solvent for said polymer chain.
- the dispersing agent is a functionalized polymer corresponding to formula (1 ') as defined above. or a polymer resulting from the polymerization of at least one monomer leading to a hydrophobic polymer chain, in the presence of a peptide carrying at least one disulfide group and / or at least one thiol function, such as a hydrolyzate of keratin, said solvent or mixture being a solvent for said polymer chain.
- the stabilization of the dispersions is assessed either by measuring the sedimentation rate of the suspensions as a function of time, or by monitoring variations in the absorbance of the supernatant as a function of the duration of a centrifugation.
- An advantage of the dispersions according to the invention is that, when settling occurs over time, the deposit formed remains easily redispersible in the medium after stirring, the polymer completely covering the surface of the particle, thus preventing its aggregation.
- Another advantage of the dispersions according to the invention is that, when they are dried at room temperature, the powder recovered can be easily redispersed subsequently in the solvent.
- the invention also relates to any composition containing the dispersions previously described. It relates very particularly to compositions containing dispersions of pigments intended for the cosmetic field.
- the functionalized polymers which can be used as wetting agents and / or dispersants and / or stabilizers for particle dispersions according to the invention are advantageously chosen from functionalized polymers resulting from the radical polymerization of at least one monomer leading to a polymer chain in the presence of a thiol FX-SH or a disulfide corresponding to the formula FXSSXF in which X and F have the meanings given above, said thiol or disulfide acting as chain transfer agent during said radical polymerization, said monomers leading to the formation of the polymer chain (P) as defined above.
- part F-X, F and X having the meanings given above comprises at least one carboxylic function and at least one amino function, in free or salified form.
- COOH and / or NH2 functions are free or salified, and in particular of the functionalized polymer obtained by radical polymerization of a monomer leading to the polymerized chain as defined above in the presence of a chain transfer agent consisting of gluthation.
- hydrophobic polymer chain is obtained by radical polymerization of at least one monomer in the presence of cysteine or homocysteine acting as chain transfer agent. It is also possible to use the functionalized polymers obtained by radical polymerization of at least one monomer in the presence of a peptide carrying at least one disulfide group and / or at least one thiol function, such as a sat keratin hydrol .
- the polymer chain advantageously results from the radical polymerization of at least one acrylic or vinyl monomer.
- the invention also relates to the use of the functionalized polymer corresponding to the formula:
- the invention also relates to the use of the same polymers for the preparation of polymer microdispersions:
- M n number-average molar mass
- micellar solutions can easily form micellar solutions in an aqueous medium, after neutralization of their acid and / or basic functions.
- These micellar solutions can then be used in the formulation of latexes, in particular crosslinked latexes, in particular crosslinked latexes of small sizes designated by microlatecx (10-150 nm).
- microlatecx 10-150 nm.
- These microlatexes can be prepared by any elution polymerization process in the presence of an organosoluble or hydrosoluble initiator, as shown by W. FUNKE with saturated or unsaturated polyesters, in particular in:
- microgels make it possible to prepare microgels, the advantages of which are illustrated in the examples; - They also make it possible to form films (depending on the nature of the polymer and the solvent).
- microlatexes can then advantageously be used for the preparation of microgels.
- microgels are obtained from the above crosslinked microlatices, either by transferring the particles constituting the dispersion into a solvent after the dispersion has been dried beforehand, either by azeotropic transfer, or by mixing with a solvent and then distillation of water.
- solvents examples include aromatic solvents, chlorinated solvents such as chloroform or methylene chloride, ketones and esters such as C2 to C4 alkyl acetates, more particularly acetate of butyl and ethyl acetate.
- microgels of the invention prove to be particularly useful in the fields of painting and cosmetics, where they make it possible to adjust the rheological characteristics. It is indeed possible to mix the microgels with formulations based on nitroccllulose with a high dry extract, without significantly increasing the viscosity of the resulting system.
- the use of the microgls of the invention in varnish and in particular nail polish formulations has the following advantages: - it allows an improvement in the rheological properties making it possible, in particular, to avoid the precipitation of pigments, and an improvement in the reproducibility of these properties. This allows, in particular, to significantly reduce, or even eliminate, the amount of organophilic clays generally used for this purpose but the drawbacks of which are well known, - it makes it possible to increase the dry extract of the film formed by the varnish , without significantly increasing the viscosity of the varnish;
- microgel according to the invention strengthens the thixotropic effect provided by organophilic clay in acetate medium.
- the proportion by weight of microgel according to the invention, in the final composition of the varnish, can rise up to approximately 30%, for example in the case where it is sought to reduce or even eliminate the quantity of nitrocellulose.
- the invention also relates to compositions, in particular cosmetic compositions containing functionalized polymers according to the invention.
- these cosmetic compositions are intended for the care or make-up of the nails and contain dispersions of particles, in particular of pigments, described above.
- These compositions can also contain nitrocellulose.
- the invention also relates to microlatcx and microgels described above as well as the compositions, in particular the cosmetic compositions containing them.
- compositions further containing nitrocellulose, in particular nail varnishes.
- It also relates, more generally, to the use of polymers of the family (1 ′) as well as polymers resulting from the radical polymerization of at least one monomer as defined above and leading to a hydrophobic polymer chain, in the presence of a peptide carrying at least one disulfide group and / or at least one thiol function, such as keratin hydrolysates for the preparation of a composition, in particular a composition of paint type, or of a food, phytosanitary or cosmetic composition, in particular of a cosmetic composition intended for the care or make-up of the nails and more particularly of a nail varnish.
- polymers of the family (1 ′) as well as polymers resulting from the radical polymerization of at least one monomer as defined above and leading to a hydrophobic polymer chain, in the presence of a peptide carrying at least one disulfide group and / or at least one thiol function, such as keratin hydrolysates for the preparation of a composition, in particular a composition of paint type
- the invention relates more particularly, as emerges from the preceding description, the use of the polymers defined above to prepare compositions containing solid particles in suspension, in particular pigments, in which said functionalized polymer is brought into contact with said particles. solids, in particular of said pigments, to facilitate their dispersion in the composition.
- the amount of functionalized polymers used is advantageously between 2% and 7% by weight relative to the total weight of the solid particles dispersed in the composition.
- the functionalized polymer is advantageously included in microdispersions of polymers, in particular microgels or microlatcs, the functionalized polymer being, as explained above, used as a surfactant for the preparation of these microgels or microlatex.
- the amount of microdispersions of polymers, microgels or microlatex is advantageously between 1% and 20% by weight relative to the total weight of the composition.
- the invention relates, as appears from the preceding description, cosmetic compositions and, very particularly, cosmetic compositions intended for the care or make-up of nails, containing nant of the functionalized polymers defined above, in particular included in microdispersions, in particular microgcls or microlatex.
- compositions further containing nitrocellulose.
- Figure 1 the isotherm and the adsorption yield of functionalized polymer obtained in Example IJ.b on a Ti ⁇ 2 powder in butyl acetate medium.
- Figures 2a, 2b, 2c, 2d, 2c, 2f the results obtained by measuring with COULTER LS130 the dispersibility of the same powder in the same medium for different initial polymer concentrations.
- Figure 3 the sedimentation rate of the same powder in the same medium, in the presence and absence of functionalized polymer.
- Figure 5 the isotherm and the adsorption yield of the functionalized polymer obtained in Example IJ.c on a Ti ⁇ 2 powder in butyl acetate medium.
- Figures 6a, 6b, 6c, 6d, 6c, 6f the results obtained by measuring with COULTER LS130 the availability of the same powder in the same medium for different initial polymer concentrations
- Figure 7 the absorption of the suspension as a function of the centrifugation time for the untreated powder and in the presence of different concentrations of functionalized polymer.
- Example III.3 is given with reference to Example III.3 and shows the adsorption isotherm of the product synthesized in Example I.3.a on a powder of Ti ⁇ 2 in butyl acetate medium.
- - Figure 9 is given with reference to Example III.4 and shows the adsorption isotherm of the product obtained in Example 1.3. on a powder of TiO2 in butyl acetate medium.
- the collected mixture is precipitated in petroleum ether 1-2 times in order to remove the residues of MMA, AIBN and its decomposition products. Dried, it is then dissolved in acetone and reprecipitated in water several times (2 times) in order to rid it of the thiol and the disulfide.
- An assay of the acid functions before and after precipitation shows the effectiveness and therefore the need for this latter purification.
- the number-average molecular mass is: 1030 (determined by vapor pressure osmometric)
- the reaction temperature is 60 ° C and polymerization time 3 h 30.
- Example I The purification is carried out as in Example I. a.
- the solution obtained is placed in a reactor (assembly similar to those of the previous examples).
- the collected mixture is precipitated in n-butanol in order to remove the residues of MMA, AIBN and its decomposition products.
- the operating conditions are as follows:
- the functionalized polymer has an Mn determined by GPC of 7550. 1.3.c - PMA of Mn equal to 3380 functionalized at the end of the chain with cvstein
- a functionalized PMMA is used as a functionalized PMMA at the end of the chain by a group -SCH (COOH) (HCOOH) obtained according to Example IJ.b
- the solvent used is butyl acetate.
- the powder used is a titanium oxide powder of 200 nm in average diameter and 10 ⁇ g of specific surface.
- the functionalized polymer is dissolved in butyl acetate, at different concentrations. Then 3g of Ti ⁇ 2 is added to 10g of solution. The mixture is then left to stir for 24 hours. The determination of adsorption isotherms (adsorption rate depending on the initial concentration of the polymer at 20 ° C) allows to obtain the maximum adsorption rate and the yield as shown in Figure 1.
- FIG. 1 gives the rate of adsorption (t) and the yield of adsorption (r) as a function of the initial concentration of functionalized polymer, expressed in percentages by mass.
- the yield r is given by the relation:
- Ci represents the initial concentration of functionalized polymer
- Ce the concentration of the solution after bringing the solution into contact with the solid particles and separation of the solid particles by centrifugation.
- the rate of adhesion is given by
- m s is the mass of solution and m c the mass of Ti ⁇ 2 with a specific surface S.
- Figures 2a to 2f give the particle size analyzes of Ti ⁇ 2 at different stages of the treatment for the same example as the adsorption isotherm.
- the functionalized polymer makes it possible to considerably reduce the aggregates to the point of making them disappear when the TiO 2 covering is total (that is to say for initial polymer concentrations corresponding to the level of the isotherm).
- a very good dispersant must reduce the amount of aggregates to a value less than 1% or at least considerably reduce their size.
- FIG. 4 gives the absorbance of the suspensions as a function of time respectively for the suspensions of untreated TiO 2 as well as for concentrations Ci of 0.5% (before the isothermal plateau) and 1.5% (on the plateau of the isotherm).
- Example IIIJ The operation is carried out, as indicated in Example IIIJ, using polymethyl methacrylate functionalized at the end of the chain with a group -SCH (COOH) -CH2COOH), obtained according to Example IJ.c, to disperse in butyl acetate medium a Ti ⁇ 2 powder with a mean diameter of 200 n and a surface area of 10 m 2 / g.
- a group -SCH (COOH) -CH2COOH obtained according to Example IJ.c
- FIG. 5 The isotherm of adsorption is given in FIG. 5. Tests with this dicarboxylated polymer previously neutralized directly in butyl acetate with dimethylethanolamine have shown that the neutralized polymer adsorbs in a slightly greater amount compared to the polymer in acid form.
- FIGS. 6a to 6f present diagrams of particle size analyzes obtained using the COULTER LS130 apparatus for different concentrations Ci and clearly show the dispersing effect obtained with the functionalized polymer studied in this example.
- this polymer has no stabilizing effect. Indeed, a suspension of Ti ⁇ 2 treated with this functionalized polymer sediment in less than 24 hours even for polymer contents corresponding to the level of the isotherm, leaving a perfectly clear supernatant.
- Examples IIIJ and III.2 demonstrate that a polymer functionalized by a polar group -SCH (COOH) (CH2COOH) behaves as a simple dispersant or as a dispersant and a stabilizer along the length of the polymer chain.
- a polymer functionalized by a polar group -SCH (COOH) CH2COOH
- CH2COOH polar group -SCH
- III.3 Dispersion of a titanium oxide powder.
- the same powder is used as in Examples IIIJ and III.2, but the functionalized polymer is poly (methyl methacrylate) functionalized at the end of the chain by a cysteine group obtained according to Example I.3.a.
- Example I.3.b the functionalized polymer obtained in Example I.3.b is used.
- Example 1.4 the functionalized polymer obtained in Example 1.4 is used.
- the dispersion medium used is butyl acetate.
- the dispersing powder consists of an alumina pigment covered with an organic dye: yellow pigment C 694424 from MAPRECOS.
- the functionalized polymer is poly (methyl methacrylate) functionalized at the end of the chain obtained according to Example IJ.d ..
- the pigment studied is a red pigment, Cl 9025 from MAPRECOS.
- the functionalized polymer is that studied in Example III.6
- the number of moles of -COOH functions to be neutralized is determined by acid-base assay in THF medium: here 7.87 10 ⁇ 3 mol and an excess of base is added, 8.2 10 ⁇ 3 m ol.
- DMEA dimethylethanolamine
- the mixture obtained is distilled under reduced pressure in order to remove the THF, then filtered. We then have a micro solution with a Tyndall effect.
- the size of the micelles measured in COULTER N4 (light scattering) is approximately 4.6 ⁇ 1.4 nm.
- This type of micelle can be used in the preparation of microlatex.
- An example of the formulation of such a latex is given below: - 150 g of water
- the polymerization is carried out in a jacketed reactor, equipped with a stirring anchor, a condenser and a nitrogen inlet.
- micellar solution is introduced into the reactor where it is heated to 65 ° C. and deoxygenated for one hour by bubbling with nitrogen. To this solution stirred at 250 rpm, the mixture of monomers is added. The initiator is introduced in the form of an aqueous solution after 15 to 20 minutes of emulsification
- the polymerization is then allowed to proceed under a nitrogen atmosphere for approximately 20 hours.
- the size of the microlatex obtained is measured with COULTER N4; the results are as follows:
- microlatex thus prepared using the functionalized polymer as a surfactant has various advantages summarized below:
- the hydrophobic chain is of the same nature as the core of the particle.
- This microlatex is crosslinked. It can therefore be transferred to a solvent medium to give a microgel.
- microlatcx cited above was dried and then redispersed in butyl acetate.
- the size of the micelles measured at the COULTER ⁇ 4 is approximately 5.5 ⁇ 0.6 nm.
- microlatcx is prepared as in the previous example and with the same synthesis conditions.
- the hydrophobic chain of the polymer comprises pendant allylic groups capable of copolymerizing with the particle core.
- the surfactant is then chemically bonded to the particle.
- the aforementioned crosslinked microlatex was dried and then redispersed in butyl acetate.
- the number of moles of -COOH functions to be neutralized is determined by acid-base assay in THF medium: here 7, J0 ⁇ moles and an excess of base is added, ie approximately 8.5J0 ⁇ "moles.
- the emulsion consisting of water, surfactant, monomers and NaH> 3 is prepared with vigorous stirring and deoxygenated by bubbling with nitrogen.
- microlatex thus prepared using the functionalized polymer as a surfactant has various advantages summarized below: -
- the hydrophobic chain is of the same nature as the core of the particle. There is therefore an addition of material in addition to the surfactant role.
- This microlatcx is crosslinked. It can therefore be transferred to a solvent medium to give a microgel.
- compositions according to the invention intended for the preparation of nail varnish
- the percentages are given by weight, unless otherwise indicated.
- the nail varnishes are prepared from "coloring solutions” of different shades, which are mixed with a base for nail polish.
- coloring solutions are in fact dispersions of pigments in a base containing nitrocellulose, this base possibly being the same as that used for the final formulation of the varnish.
- the pigments are previously ground in a solvent, such as butyl acetate, using a suitable mill such as, for example, a Dyno-mill type ball mill.
- the grinding of the pigment is carried out in the presence of the functionalized polymer according to the invention, used as an agent facilitating the dispersion of the pigment in the solvent.
- the proportion of polymer used is of the order of 2 to 7% relative to the weight of the pigment. More preferably, this proportion is approximately 5%.
- the ground materials are incorporated into a "diluting" nitrocellulose base to prepare different coloring solutions, each having its own shade according to the nature and the concentration of the pigment which it contains.
- composition of the "diluent" base is as follows:
- the amount of ground material introduced into the diluent base is such that the concentration of pigment in the coloring solution is generally less than or equal to approximately 20%.
- the pigment content of the final varnish is generally of the order of 2 to 4%.
Landscapes
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Birds (AREA)
- Epidemiology (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Dispersion Chemistry (AREA)
- Cosmetics (AREA)
- Polymerisation Methods In General (AREA)
- Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9411575A FR2724937B1 (fr) | 1994-09-28 | 1994-09-28 | Polymeres fonctionnalises, leur procede de synthese, leur utilisation comme agents tensioactifs en particulier dans des compositions cosmetiques et notamment des vernis a ongles |
FR9411575 | 1994-09-28 | ||
PCT/FR1995/001251 WO1996010043A1 (fr) | 1994-09-28 | 1995-09-28 | Polymeres fonctionnalises, leur procede de synthese, leur utilisation comme agents tensioactifs en particulier dans des compositions cosmetiques et notamment des vernis a ongle |
Publications (1)
Publication Number | Publication Date |
---|---|
EP0783529A1 true EP0783529A1 (fr) | 1997-07-16 |
Family
ID=9467360
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP95932803A Withdrawn EP0783529A1 (fr) | 1994-09-28 | 1995-09-28 | Polymeres fonctionnalises, leur procede de synthese, leur utilisation comme agents tensioactifs en particulier dans des compositions cosmetiques et notamment des vernis a ongle |
Country Status (5)
Country | Link |
---|---|
US (1) | US5916985A (fr) |
EP (1) | EP0783529A1 (fr) |
JP (1) | JPH10506428A (fr) |
FR (1) | FR2724937B1 (fr) |
WO (1) | WO1996010043A1 (fr) |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2724843A1 (fr) * | 1994-09-28 | 1996-03-29 | Lvmh Rech | Vernis a ongles contenant des microgels |
FR2735689B1 (fr) * | 1995-06-21 | 1997-08-01 | Oreal | Composition comprenant une dispersion de particules de polymeres dans un milieu non aqueux |
DE19941607A1 (de) * | 1999-09-01 | 2001-03-08 | Merck Patent Gmbh | Pigmentmischung enthaltend BIOCI-Pigmente |
BRPI0400438A (pt) * | 2004-04-07 | 2005-11-22 | Botica Com Farmaceutica Ltda | Composição cosmética oleosa com capacidade suspensora |
JP5332141B2 (ja) * | 2007-06-27 | 2013-11-06 | 東ソー株式会社 | ポリマーエマルジョン及びその製造法 |
DE102009036967A1 (de) * | 2009-08-12 | 2011-02-17 | Tesa Se | Verfahren zur Herstellung von Polyacrylaten |
AR080669A1 (es) | 2009-11-13 | 2012-05-02 | Sanofi Aventis Deutschland | Composicion farmaceutica que comprende un agonista de glp-1, una insulina y metionina |
DE102010000750A1 (de) * | 2010-01-08 | 2011-07-14 | tesa SE, 20253 | Multimodale Copolymere, deren Herstellung und Verwendung in Haftklebemassen |
CN108794706B (zh) * | 2018-06-29 | 2020-06-19 | 浙江理工大学 | 一种响应性聚合物/Fe3O4杂化纳米水凝胶的制备方法 |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3788996A (en) * | 1970-05-21 | 1974-01-29 | Du Pont | Coating compositions containing polymeric dispersing aids |
US3684771A (en) * | 1971-03-03 | 1972-08-15 | Du Pont | Polyesters with substituted amine end groups |
US3689593A (en) * | 1971-11-19 | 1972-09-05 | Du Pont | Chain transfer linked urethane graft copolymers |
US4032698A (en) * | 1973-02-02 | 1977-06-28 | E. I. Du Pont De Nemours And Company | Polymeric materials with substituted urea end groups |
US4070388A (en) * | 1975-10-14 | 1978-01-24 | E. I. Du Pont De Nemours And Company | Polymeric materials with acid end groups |
US5091573A (en) * | 1990-08-11 | 1992-02-25 | Rohm And Haas Company | Thiol-terminated hydroxyamides |
US5298585A (en) * | 1993-03-24 | 1994-03-29 | Rohm And Haas Company | Amine-thiol chain transfer agents |
-
1994
- 1994-09-28 FR FR9411575A patent/FR2724937B1/fr not_active Expired - Fee Related
-
1995
- 1995-09-28 EP EP95932803A patent/EP0783529A1/fr not_active Withdrawn
- 1995-09-28 JP JP8511452A patent/JPH10506428A/ja active Pending
- 1995-09-28 US US08/817,387 patent/US5916985A/en not_active Expired - Fee Related
- 1995-09-28 WO PCT/FR1995/001251 patent/WO1996010043A1/fr not_active Application Discontinuation
Non-Patent Citations (1)
Title |
---|
See references of WO9610043A1 * |
Also Published As
Publication number | Publication date |
---|---|
FR2724937B1 (fr) | 1997-02-07 |
WO1996010043A1 (fr) | 1996-04-04 |
JPH10506428A (ja) | 1998-06-23 |
FR2724937A1 (fr) | 1996-03-29 |
US5916985A (en) | 1999-06-29 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP0783531B1 (fr) | Polymeres fonctionnalises par des acides amines ou des derives d'acides amines, leur procede de synthese, leur utilisation comme agents tensioactifs en particulier dans des compositions cosmetiques et notamment des vernis a ongles | |
FR2710646A1 (fr) | Microdispersions stables et microgels à base de polymères acryliques, leur procédé d'obtention et compositions, notamment cosmétiques, les contenant. | |
JP2587802B2 (ja) | 脂肪性物質と水性ポリマー分散液とを含有する化粧品組成物並びにその分散液の使用方法 | |
EP1428844A2 (fr) | Dispersions de polymères en milieu organique. | |
EP0880564A1 (fr) | Particules de dioxyde de titane | |
WO2004055081A2 (fr) | Composition de revetement des fibres keratiniques comprenant une dispersion de particules de polymere | |
EP0721486A1 (fr) | Utilisation de copolymeres-blocs acryliques comme agents mouillants et/ou dispersants des particules solides et dispersions en resultant | |
EP1858989B1 (fr) | Compositions de peintures aqueuses comprenant une dispersion colloïdale de cerium | |
FR2848560A1 (fr) | Polymere acrylique, dispersion dudit polymere stable dans un milieu organique non aqueux silicone et composition comprenant ladite dispersion. | |
EP0783530B1 (fr) | Vernis a ongles contenant des microgels | |
WO1996010043A1 (fr) | Polymeres fonctionnalises, leur procede de synthese, leur utilisation comme agents tensioactifs en particulier dans des compositions cosmetiques et notamment des vernis a ongle | |
EP1583781A1 (fr) | COPOLYMERES A GRADIENT SOLUBLES OU DU MOINS DISPERSIBLES DANS L'EAU COMME DANS LES SOLVANTS ORGANIQUES | |
FR2721206A1 (fr) | Composition capillaire comprenant une dispersion aqueuse de polymères. | |
EP0869136A1 (fr) | Nouveaux polymères associatifs et leur procédé de préparation par micro-émulsion inverse | |
CA2274939A1 (fr) | Composition cosmetique sous la forme d'une dispersion aqueuse comprenant au moins un colorant polymerique | |
FR2470778A1 (fr) | Procede de preparation d'une dispersion aqueuse liquide de polymeres | |
EP0846133A1 (fr) | Polymeres (meth)acryliques, leur procede de fabrication et leur utilisation comme dispersant de pigment | |
FR2472214A1 (fr) | Composition de revelateur negatif liquide pour tirage de copies par voie electrostatique | |
FR2848558A1 (fr) | Polymere acrylique, dispersion dudit polymere stable dans un milieu organique non aqueux et composition comprenant ladite dispersion | |
EP2903693B1 (fr) | Copolymeres dans des compositions cosmetiques | |
FR2848559A1 (fr) | Polymere acrylique, dispersion dudit polymere stable dans un milieu organique non aqueux et non silicone et composition comprenant ladite dispersion. | |
FR2996130A1 (fr) | Polymeres (meth) acryliques dans des compositions cosmetiques pour le maquillage et le soin des matieres keratiniques | |
FR3005415A1 (fr) | Copolymeres dans des compositions cosmetiques pour le maquillage et le soin des matieres keratiniques |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
17P | Request for examination filed |
Effective date: 19970326 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): BE CH DE ES FR GB IT LI |
|
17Q | First examination report despatched |
Effective date: 19971112 |
|
GRAG | Despatch of communication of intention to grant |
Free format text: ORIGINAL CODE: EPIDOS AGRA |
|
GRAG | Despatch of communication of intention to grant |
Free format text: ORIGINAL CODE: EPIDOS AGRA |
|
GRAG | Despatch of communication of intention to grant |
Free format text: ORIGINAL CODE: EPIDOS AGRA |
|
GRAH | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOS IGRA |
|
RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: LVMH RECHERCHE |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
18D | Application deemed to be withdrawn |
Effective date: 19991016 |