EP3890682A1 - Composition émulsionnante constituée d'un émulsionnant huile-dans-eau et d'une cyclodextrine de granulométrie sélectionnée, apte à fournir une émulsion huile-dans-eau avec effets sensoriels améliorés, à usage cosmétique - Google Patents
Composition émulsionnante constituée d'un émulsionnant huile-dans-eau et d'une cyclodextrine de granulométrie sélectionnée, apte à fournir une émulsion huile-dans-eau avec effets sensoriels améliorés, à usage cosmétiqueInfo
- Publication number
- EP3890682A1 EP3890682A1 EP19868207.2A EP19868207A EP3890682A1 EP 3890682 A1 EP3890682 A1 EP 3890682A1 EP 19868207 A EP19868207 A EP 19868207A EP 3890682 A1 EP3890682 A1 EP 3890682A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- equal
- oil
- emulsifier
- cyclodextrin
- emulsifying composition
- 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.)
- Pending
Links
- 239000000203 mixture Substances 0.000 title claims abstract description 146
- 230000001804 emulsifying effect Effects 0.000 title claims abstract description 78
- 229920000858 Cyclodextrin Polymers 0.000 title claims abstract description 76
- 239000002245 particle Substances 0.000 title claims abstract description 72
- 239000003995 emulsifying agent Substances 0.000 title claims abstract description 68
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 64
- HFHDHCJBZVLPGP-UHFFFAOYSA-N schardinger α-dextrin Chemical compound O1C(C(C2O)O)C(CO)OC2OC(C(C2O)O)C(CO)OC2OC(C(C2O)O)C(CO)OC2OC(C(O)C2O)C(CO)OC2OC(C(C2O)O)C(CO)OC2OC2C(O)C(O)C1OC2CO HFHDHCJBZVLPGP-UHFFFAOYSA-N 0.000 title claims abstract description 47
- 239000002537 cosmetic Substances 0.000 title claims abstract description 33
- 230000001953 sensory effect Effects 0.000 title abstract description 21
- 239000007764 o/w emulsion Substances 0.000 title description 10
- 239000000839 emulsion Substances 0.000 claims abstract description 87
- 239000007787 solid Substances 0.000 claims abstract description 29
- 125000000217 alkyl group Chemical group 0.000 claims description 36
- 239000012071 phase Substances 0.000 claims description 34
- 239000007788 liquid Substances 0.000 claims description 21
- 229920005862 polyol Polymers 0.000 claims description 19
- 150000003077 polyols Chemical class 0.000 claims description 19
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 claims description 18
- 150000002191 fatty alcohols Chemical class 0.000 claims description 17
- 125000004432 carbon atom Chemical group C* 0.000 claims description 15
- -1 alkyl glucoside Chemical class 0.000 claims description 13
- 239000008346 aqueous phase Substances 0.000 claims description 13
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- WHGYBXFWUBPSRW-FOUAGVGXSA-N beta-cyclodextrin Chemical compound OC[C@H]([C@H]([C@@H]([C@H]1O)O)O[C@H]2O[C@@H]([C@@H](O[C@H]3O[C@H](CO)[C@H]([C@@H]([C@H]3O)O)O[C@H]3O[C@H](CO)[C@H]([C@@H]([C@H]3O)O)O[C@H]3O[C@H](CO)[C@H]([C@@H]([C@H]3O)O)O[C@H]3O[C@H](CO)[C@H]([C@@H]([C@H]3O)O)O3)[C@H](O)[C@H]2O)CO)O[C@@H]1O[C@H]1[C@H](O)[C@@H](O)[C@@H]3O[C@@H]1CO WHGYBXFWUBPSRW-FOUAGVGXSA-N 0.000 claims description 12
- 235000011175 beta-cyclodextrine Nutrition 0.000 claims description 12
- 238000009826 distribution Methods 0.000 claims description 11
- 150000002194 fatty esters Chemical class 0.000 claims description 11
- 239000008103 glucose Substances 0.000 claims description 11
- 239000001116 FEMA 4028 Substances 0.000 claims description 10
- WQZGKKKJIJFFOK-VFUOTHLCSA-N beta-D-glucose Chemical compound OC[C@H]1O[C@@H](O)[C@H](O)[C@@H](O)[C@@H]1O WQZGKKKJIJFFOK-VFUOTHLCSA-N 0.000 claims description 10
- 229960004853 betadex Drugs 0.000 claims description 10
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- 239000006185 dispersion Substances 0.000 claims description 9
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- 238000003756 stirring Methods 0.000 claims description 6
- 229920002472 Starch Polymers 0.000 claims description 5
- 235000019698 starch Nutrition 0.000 claims description 5
- FBPFZTCFMRRESA-FSIIMWSLSA-N D-Glucitol Natural products OC[C@H](O)[C@H](O)[C@@H](O)[C@H](O)CO FBPFZTCFMRRESA-FSIIMWSLSA-N 0.000 claims description 4
- FBPFZTCFMRRESA-JGWLITMVSA-N D-glucitol Chemical compound OC[C@H](O)[C@@H](O)[C@H](O)[C@H](O)CO FBPFZTCFMRRESA-JGWLITMVSA-N 0.000 claims description 4
- DLRVVLDZNNYCBX-UHFFFAOYSA-N Polydextrose Polymers OC1C(O)C(O)C(CO)OC1OCC1C(O)C(O)C(O)C(O)O1 DLRVVLDZNNYCBX-UHFFFAOYSA-N 0.000 claims description 4
- 239000000600 sorbitol Substances 0.000 claims description 4
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- 229920001450 Alpha-Cyclodextrin Polymers 0.000 claims description 3
- FBPFZTCFMRRESA-KVTDHHQDSA-N D-Mannitol Chemical compound OC[C@@H](O)[C@@H](O)[C@H](O)[C@H](O)CO FBPFZTCFMRRESA-KVTDHHQDSA-N 0.000 claims description 3
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- 239000004375 Dextrin Substances 0.000 claims description 3
- 239000004386 Erythritol Substances 0.000 claims description 3
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- RFSUNEUAIZKAJO-ARQDHWQXSA-N Fructose Chemical compound OC[C@H]1O[C@](O)(CO)[C@@H](O)[C@@H]1O RFSUNEUAIZKAJO-ARQDHWQXSA-N 0.000 claims description 3
- 229930195725 Mannitol Natural products 0.000 claims description 3
- CZMRCDWAGMRECN-UGDNZRGBSA-N Sucrose Chemical compound O[C@H]1[C@H](O)[C@@H](CO)O[C@@]1(CO)O[C@@H]1[C@H](O)[C@@H](O)[C@H](O)[C@@H](CO)O1 CZMRCDWAGMRECN-UGDNZRGBSA-N 0.000 claims description 3
- 229930006000 Sucrose Natural products 0.000 claims description 3
- TVXBFESIOXBWNM-UHFFFAOYSA-N Xylitol Natural products OCCC(O)C(O)C(O)CCO TVXBFESIOXBWNM-UHFFFAOYSA-N 0.000 claims description 3
- WQZGKKKJIJFFOK-PHYPRBDBSA-N alpha-D-galactose Chemical compound OC[C@H]1O[C@H](O)[C@H](O)[C@@H](O)[C@H]1O WQZGKKKJIJFFOK-PHYPRBDBSA-N 0.000 claims description 3
- 235000019425 dextrin Nutrition 0.000 claims description 3
- 235000019414 erythritol Nutrition 0.000 claims description 3
- UNXHWFMMPAWVPI-ZXZARUISSA-N erythritol Chemical compound OC[C@H](O)[C@H](O)CO UNXHWFMMPAWVPI-ZXZARUISSA-N 0.000 claims description 3
- 229940009714 erythritol Drugs 0.000 claims description 3
- 229930182830 galactose Natural products 0.000 claims description 3
- VQHSOMBJVWLPSR-WUJBLJFYSA-N maltitol Chemical compound OC[C@H](O)[C@@H](O)[C@@H]([C@H](O)CO)O[C@H]1O[C@H](CO)[C@@H](O)[C@H](O)[C@H]1O VQHSOMBJVWLPSR-WUJBLJFYSA-N 0.000 claims description 3
- 235000010449 maltitol Nutrition 0.000 claims description 3
- 239000000845 maltitol Substances 0.000 claims description 3
- 229940035436 maltitol Drugs 0.000 claims description 3
- 235000010355 mannitol Nutrition 0.000 claims description 3
- 239000000594 mannitol Substances 0.000 claims description 3
- HEBKCHPVOIAQTA-UHFFFAOYSA-N meso ribitol Natural products OCC(O)C(O)C(O)CO HEBKCHPVOIAQTA-UHFFFAOYSA-N 0.000 claims description 3
- 229960004793 sucrose Drugs 0.000 claims description 3
- 235000010447 xylitol Nutrition 0.000 claims description 3
- 239000000811 xylitol Substances 0.000 claims description 3
- HEBKCHPVOIAQTA-SCDXWVJYSA-N xylitol Chemical compound OC[C@H](O)[C@@H](O)[C@H](O)CO HEBKCHPVOIAQTA-SCDXWVJYSA-N 0.000 claims description 3
- 229960002675 xylitol Drugs 0.000 claims description 3
- JNYAEWCLZODPBN-JGWLITMVSA-N (2r,3r,4s)-2-[(1r)-1,2-dihydroxyethyl]oxolane-3,4-diol Chemical compound OC[C@@H](O)[C@H]1OC[C@H](O)[C@H]1O JNYAEWCLZODPBN-JGWLITMVSA-N 0.000 claims description 2
- KLDXJTOLSGUMSJ-JGWLITMVSA-N Isosorbide Chemical compound O[C@@H]1CO[C@@H]2[C@@H](O)CO[C@@H]21 KLDXJTOLSGUMSJ-JGWLITMVSA-N 0.000 claims description 2
- 229920001100 Polydextrose Polymers 0.000 claims description 2
- 229960001031 glucose Drugs 0.000 claims description 2
- 150000002303 glucose derivatives Chemical class 0.000 claims description 2
- 229960002479 isosorbide Drugs 0.000 claims description 2
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- 235000013856 polydextrose Nutrition 0.000 claims description 2
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- 239000005720 sucrose Substances 0.000 claims description 2
- 235000020357 syrup Nutrition 0.000 claims description 2
- 239000006188 syrup Substances 0.000 claims description 2
- 238000001033 granulometry Methods 0.000 abstract description 4
- 239000000047 product Substances 0.000 description 34
- 239000003921 oil Substances 0.000 description 28
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- 210000003491 skin Anatomy 0.000 description 21
- OSCJHTSDLYVCQC-UHFFFAOYSA-N 2-ethylhexyl 4-[[4-[4-(tert-butylcarbamoyl)anilino]-6-[4-(2-ethylhexoxycarbonyl)anilino]-1,3,5-triazin-2-yl]amino]benzoate Chemical compound C1=CC(C(=O)OCC(CC)CCCC)=CC=C1NC1=NC(NC=2C=CC(=CC=2)C(=O)NC(C)(C)C)=NC(NC=2C=CC(=CC=2)C(=O)OCC(CC)CCCC)=N1 OSCJHTSDLYVCQC-UHFFFAOYSA-N 0.000 description 17
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- 230000000149 penetrating effect Effects 0.000 description 5
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- SRBFZHDQGSBBOR-IOVATXLUSA-N D-xylopyranose Chemical compound O[C@@H]1COC(O)[C@H](O)[C@H]1O SRBFZHDQGSBBOR-IOVATXLUSA-N 0.000 description 4
- 241000196324 Embryophyta Species 0.000 description 4
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-
- 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
- A61K2800/41—Particular ingredients further characterized by their size
- A61K2800/412—Microsized, i.e. having sizes between 0.1 and 100 microns
Definitions
- Emulsifying composition consisting of an oil-in-water emulsifier and a cyclodextrin of selected particle size, capable of providing a liquid oil-in-water emulsion with improved sensory effects, for cosmetic use.
- the present invention relates to an emulsifying composition of plant origin, ready to use and directly usable when cold, which finds applications in particular in the field of cosmetics.
- This composition comprises at least one cyclodextrin in the form of solid particles, said particles having a volume average size d (4.3) measured by laser particle size, less than or equal to 20 ⁇ m, and at least one emulsifier of natural origin.
- the emulsifying composition according to the invention can be used as a cosmetic composition as such, or as a premix to allow an emulsion to be produced and stabilized.
- This emulsifying composition in particular allows the easy production of very fine liquid oil-in-water (O / W) emulsions, with varied textures, compatible with the skin.
- the compositions obtained have a soft, powdery feel, even when they have a high content of fatty phase in the emulsion, and spread easily, without forming fluff.
- An emulsion is a dispersion of a liquid (or a material made liquid) in fine drops in another liquid immiscible with the first. It presents a macroscopically homogeneous appearance but appears heterogeneous under the microscope.
- the liquid in the form of drops is called dispersed (or discontinuous) phase, while the other liquid is called dispersing (or continuous) phase.
- an emulsion is composed of two phases (simple emulsion): a hydrophilic phase (aqueous) and a lipophilic phase (fatty).
- An oil-in-water emulsion is called a direct emulsion.
- Emulsions are widely used in the field of cosmetics. As a cosmetic product, these emulsions must meet the needs of consumers, who demand efficiency, safety and properties pleasant sensory. In order to satisfy these requirements, the emulsion formulations have become more complex over time by always incorporating more functional or sensory ingredients of synthetic origin, generally derived from petrochemicals.
- document EP 0 685 227 proposes a very complex system of cosmetic sunscreen compositions, comprising an aqueous continuous phase, a protective system capable of filtering UV rays, a surfactant, organic solvents (alcohols and lower polyols) and at least one polymer or more particularly a crosslinked copolymer (alkyl acrylates, vinyl acetate).
- Document FR 2 858 777 describes an oil-in-water emulsion containing at least one fatty substance (fatty acid esters, waxes, butters, natural oils - vegetable, animal, marine, synthetic or mineral, hydrogenated oils and their mixtures), at least one surfactant (ethoxylated polyglycerol fatty acid esters, alcohol ethoxylates), at least one co-surfactant and water.
- fatty substance fatty acid esters, waxes, butters, natural oils - vegetable, animal, marine, synthetic or mineral, hydrogenated oils and their mixtures
- surfactant ethoxylated polyglycerol fatty acid esters, alcohol ethoxylates
- surfactants in products intended to be applied to humans or animals, whether in topical or oral form, can be problematic. Indeed, surfactants can damage cell membranes. Thus, efforts are made, in particular in the cosmetic field, to reduce the potentially harmful effects of surfactants.
- cosmetic products must now meet a new consumer expectation: the natural origin, and even more demanding, the naturalness of the compositions.
- consumers are now looking for cosmetic products composed essentially of natural ingredients or of natural origin, with the minimum of chemical modifications or synthetic or petrochemical grafts.
- one of the aims of the present invention is to provide a composition which allows the formation of stable emulsions, even according to a "cold" process, by dispersion in an aqueous phase and subsequent addition of oil or body bold.
- a composition eliminates the need for original surfactants petroleum and non-biodegradable, in particular glycol derivatives and ethoxylated derivatives.
- the composition according to the present invention also makes it possible to manufacture emulsions of the Pickering type. Emulsions of this type are devoid of surfactant and are stabilized by colloidal microparticles, generally silicas, which are placed at the interfaces of the continuous phase and the dispersed phase.
- these colloidal particles would be organic particles made up of inclusion complexes between at least one cyclodextrin and at least one fatty molecule. These particles are very advantageously compatible with the skin or the hair and do not damage the cell membranes.
- the main attraction of the consumer for the cosmetic product is based on its sensory properties, long before the beneficial effects are observable.
- the challenge facing a cosmetic product is therefore to deliver a beneficial cosmetic effect while providing, before or during application, the most pleasant sensations possible.
- the removal of functional or sensory ingredients from petrochemicals, their substitution with ingredients of natural origin, or the introduction of new natural ingredients or of natural origin can be accompanied by a degradation of the sensory properties of the cosmetic product in a more or less marked manner, in particular their appearance, the setting of the product, their application or of their properties when applied to the skin or the integuments.
- compositions meeting the criteria of naturalness may prove difficult to spread, fluff or provide, on application, a crunching sensation, or a brittle sensation, or even an insufficient slippery sensation.
- These insufficient or degraded sensory perceptions are detrimental to the quality or image of a cosmetic product.
- a previous application filed by the applicant FR1853362 not published to date, relates to an emulsifying composition comprising a cyclodextrin and an emulsifier of natural origin of HLB greater than or equal to 8.
- the beta-cyclodextrin used is a beta-cyclodextrin marketed by Roquette Fromme under the name “Beauté by Roquette® CD 102”, of medium size in volume equal to 95 pm.
- the sensory properties obtained by means of the composition used in this application are not entirely satisfactory.
- an objective of the present invention is to provide an improved emulsifying composition, for cosmetic use, offering improved sensory properties compared to the emulsifying composition of application FR1853362, in particular concerning the powdered effect, the ease of spreading, softness of touch, crunching on application, penetration of the composition and linting.
- Another objective of the present invention is to provide a composition of 100% natural origin.
- the natural origin of the ingredients used to formulate products of current use like cosmetic compositions is today a major stake, not only with regard to the safeguard and the protection of our environment but also for the good- to be consumers.
- the composition according to the present invention makes it possible to replace the surfactants of synthetic and in particular petroleum origin, in particular ethoxylated, which these days seeks to replace for environmental reasons, due to their poor biodegradability, and of safety. , due to the dangerousness of ethylene oxide widely used to produce polyethoxylated surfactants, which is toxic and flammable).
- Another objective of the present invention is to provide a ready-to-use composition, allowing the formulator a very simple implementation, with a minimum supply of energy in particular by introduction of all the ingredients in the same tank or reactor (so-called “one pot” formulation in English).
- the emulsifying composition which is the subject of the present invention is advantageously usable according to "a cold process", that is to say even at room temperature.
- cold process it is meant that the emulsifying composition can be used directly by dispersion in water at a water temperature below 45 ° C, better still below 35 ° C and better still at room temperature.
- Another objective of the present invention is to provide a composition for cosmetic use with a broad spectrum, that is to say versatile from the point of view of the end products envisaged: from this point of view, the composition according to The invention can be used in products as diverse as lotions, creams, gels, milks, etc. Furthermore, said composition is advantageously non-irritating and non-allergic to the skin. It also offers the advantage of not depending on the pH or the presence of electrolytes: in other words, its emulsifying capacity is not affected by the pH of the medium, nor by the presence of mono, di or trivalent.
- the main object of the present invention which consists of an emulsifying composition, in particular for cosmetic use, capable of allowing obtaining a liquid oil-in-water (O / W) type emulsion, comprising:
- emulsifier of natural origin chosen from emulsifiers of the oil-in-water (O / W) type, having a hydrophilic-lipophilic balance greater than or equal to 8, preferably greater than or equal to 9.
- the calculation of the HLB takes into account the molecular weights of the hydrophilic parts and the molecular weight of the molecule considered and can be obtained according to the following equation:
- composition according to the invention uses at least one cyclodextrin in the form of solid particles, said particles having a volume average size d (4.3) measured by laser particle size, less than or equal to 20 ⁇ m, preferably less than or equal to 12 pm, and most preferably less than or equal to 8 pm.
- d volume average size measured by laser particle size
- cyclodextrin designates and includes any of the cyclodextrins known to those skilled in the art, such as native and unsubstituted cyclodextrins containing from 6 to 12 glucose units linked by bonds covalent between carbons 1 and 4, and in particular the alpha-, beta- and gamma-cyclodextrins containing respectively 6, 7 and 8 units of glucose.
- cyclodextrin derivatives namely molecules of which at least part of the hydroxyl groups OH has been transformed into OR groups, where R generally denotes an alkyl group.
- cyclodextrin derivatives include in particular methylated, ethylated cyclodextrins, but also those substituted with a hydroxyalkyl group such as hydroxypropylated and hydroxyethylated cyclodextrins.
- the preferred cyclodextrins according to the present invention are alpha-, beta- and gamma-cyclodextrins.
- the cyclodextrin used in the composition according to the invention is a beta-cyclodextrin, preferably "native", that is to say of which the hydroxyl groups are chemically unsubstituted.
- Cyclodextrin may in particular be in the form of a crystalline, pseudo-crystalline or amorphous powder.
- the cyclodextrin is present in the form of solid particles characterized by a volume average size d (4.3), also called the volume average diameter, measured by laser particle size, less than or equal to 20 pm, preferably less than or equal to 12 pm, and very preferably less than or equal to 8 pm.
- the mean size by volume of the solid particles of cyclodextrin is between 2 ⁇ m and 20 ⁇ m, preferably between 3 ⁇ m and 12 ⁇ m, and very preferably between 4 ⁇ m and 8 ⁇ m.
- the solid particles of cyclodextrins can be of any geometric shape, regular or irregular, and can be well individualized cyclodextrin crystals or agglomerates of cyclodextrin crystals linked together by crystal bridges.
- the solid particles of cyclodextrins have regular geometric shapes.
- the volume average size is calculated according to ISO 9276-2: 2014 from particle size distributions by volume, measured by particle size by laser diffraction, for example using a laser granulometer from the MasterSizer® range, for example “Mastersizer 2000 TM”, “Mastersizer 3000 TM”, “Mastersizer 3000E TM”, from the company Malvern Instruments®, or a laser granulometer “Particula LA960 "from the company Horiba®.
- These laser diffraction measurement methods can be implemented in the wet or dry process, according to the guiding principles of ISO 13320: 2009. When the wet process is used, it is recommended to use 2-propanol as the measuring fluid.
- the solid particles of cyclodextrins have a size distribution by volume, measured by particle size by laser diffraction, the characteristic diameters d (10), d (50) and d (90) are such that:
- the diameter d (10) of between 0.8 and 5.0 pm, preferably between 1.0 and 2.5 pm, and
- the diameter d (50) is between 5 and 15.0 ⁇ m, preferably between 7 and 10.0 ⁇ m, and
- the diameter d (90) is between 15 and 30.0 ⁇ m, preferably between 20 and 25.0 ⁇ m.
- the characteristic diameters d (10), d (50) and d (90), as defined in standard ISO 13320: 2009 under the notations x10, x50 and x90, are the particle diameters corresponding respectively to 10% , 50% and 90%, of the cumulative size distribution by volume.
- the solid particles of cyclodextrins have a size distribution by volume, measured by particle size by laser diffraction, whose characteristic diameters d (10), d (50) and d (90) are such than :
- the diameter d (10) is less than or equal to 5.0 pm, preferably less than or equal to 2.5 pm,
- the diameter d (50) is less than or equal to 15.0 pm, preferably less than or equal to 10.0 pm,
- the diameter d (90) is less than or equal to 30.0 pm, preferably less than or equal to 25.0 pm.
- the solid particles of cyclodextrins have a size distribution by volume, measured by particle size by laser diffraction, having a coefficient of variation less than or equal to 100%, preferably less than or equal to 90%, and most preferably less than or equal to 73%.
- the coefficient of variation of the particle size distribution is the standard deviation of the particle size distribution divided by the volume average size d (4.3), also called volume average diameter.
- the cyclodextrin is therefore in the form of solid particles whose size distribution by volume measured by particle size distribution by laser diffraction has the following characteristics:
- the cyclodextrin particles contribute to the improvement of sensory perceptions of touch, in particular by increasing the feeling of softness.
- this use allows a marked reduction in the crunching sensation on application, as well as a reduction in linting, or even a disappearance of this linting depending on the nature of the skins.
- oil-in-water emulsifier designates any emulsifier derived from renewable resources, in particular extracted or secreted by plants, microorganisms or algae, and capable of allowing after physical modification , chemical or enzymatic, obtaining an oil-in-water type emulsion.
- the oil-in-water emulsifier of natural origin having a Hydrophilic-Lipophilic balance (HLB) greater than or equal to 8, preferably greater than or equal to 9, is preferably present in the emulsifying composition in a ratio (weight / weight) oil-in-water / cyclodextrin emulsifier between 0.01: 1 and 1: 1, preferably between 0.05: 1 and 0.5: 1, more preferably between 0.10: 1 and 0 , 35: 1 and better still between 0.15: 1 and 0.30: 1.
- HLB Hydrophilic-Lipophilic balance
- This O / W emulsifier of natural origin preferably has a Hydrophilic-Lipophilic balance (HLB) of between 8 and 20, preferably between 9 and 16, and better still between 1 1 and 14. It can also be a chosen one among naturally biodegradable products in a hydrated natural environment.
- HLB Hydrophilic-Lipophilic balance
- the average HLB of the entire emulsifying system of said composition is greater than or equal to 8, preferably greater than or equal to 9.
- the average HLB of all of the emulsifying system of the composition is calculated by carrying out a weighted average of the HLBs of each emulsifier, by weighting the HLBs of each emulsifier present by its mass fraction relative to the total mass of the emulsifiers present.
- This O / W emulsifier of natural origin is preferably chosen from the following products, provided that they meet the condition on the HLB above: alkyl polyglucosides; mixtures of at least one alkyl polyglucoside and at least one fatty alcohol; non-ethoxylated fatty esters of polyols, and in particular among non-ethoxylated fatty esters of glycerol, polyglycerols, sorbitol, sorbitan, anhydrohexitols such as in particular isosorbide, mannitol, xylitol, erythritol, maltitol , sucrose, glucose, polydextrose, hydrogenated glucose syrups, dextrins and hydrolyzed starches.
- the O / W emulsifier of natural origin is preferably chosen to be naturally biodegradable in a hydrated natural environment. These may especially be non-ethoxylated fatty esters of polyols obtained from fatty acid or by trans esterification from oil or mixtures of oils.
- the fatty acids used comprise from 8 to 22 carbon atoms, preferably from 10 to 18 carbon atoms, and in particular from 12 to 18 carbon atoms. These acids can be linear or branched, saturated or unsaturated, have one or more lateral hydroxyl functions.
- the oils can be saturated or unsaturated, from liquid to solid at room temperature, and optionally have hydroxyl functions, preferably with an iodine index of between 1 and 145, and in particular from 5 to 105.
- the O / W emulsifier of natural origin can be chosen in particular from polyglycerol esters, and preferably from esters resulting from the reaction of polyglycerols comprising from 2 to 12 glycerol units, preferably from 3 to 10 glycerol units with at least one partially hydrogenated or non-hydrogenated vegetable oil with an iodine index of between 1 and 15, and in particular from 5 to 10.
- polyglycerol esters and preferably from esters resulting from the reaction of polyglycerols comprising from 2 to 12 glycerol units, preferably from 3 to 10 glycerol units with at least one partially hydrogenated or non-hydrogenated vegetable oil with an iodine index of between 1 and 15, and in particular from 5 to 10.
- These may in particular be oleic, stearic, palmitic, lauric esters , diisostearic and caprylic of polyglycerols and in particular of the following products: Polyglyceryl-5 Diole
- Polyglyceryl-2 Caprate preferably having an HLB of about 9 (like HYDRIOL ® PGC.2 from HYDRIOR), Polyglyceryl-3 Stearate preferentially exhibiting an HLB of approximately 9 (such as Dermofeel® PS from Evonik Dr. Straetmans GmbH), Polyglyceryl-2 Laurate preferentially exhibiting an HLB approximately 9 (such as Dermofeel® G2L from Evonik Dr. Straetmans GmbH), Polyglyceryl-3 Palmitate preferentially exhibiting an HLB of approximately 10 (such as Dermofeel® PP from Evonik Dr.
- Polyglyceryl-10 Diisostearate preferentially exhibiting an HLB approximately 1 1 (such as Dermofeel® G10 DI from Evonik Dr. Straetmans GmbH), Polyglyceryl-6 Caprylate preferentially having an HLB of approximately 11.5, Polyglyceryl-5 Laurate preferentially exhibiting an HLB of approximately 13 (such as Dermofeel® G5L from Evonik Dr.
- Polyglyceryl-3 Caprate preferentially exhibiting an HLB of approximately 14 (such as HYDRIOL® PGC.3 from HYDRIOR), Polyglyceryl-4 Caprate preferentially exhibiting an HLB approximately 14 (such as MASSOCARE PG4 C from Masso), Polyglyceryl- 10 Monolaurate preferentially having an HLB of approximately 14.8, Polyglyceryl-6 Caprylate preferentially exhibiting an HLB of approximately 15 (such as Dermofeel® G 6 CY from Dr. Straetmans GmbH / Evonik), Polyglyceryl-10 Laurate preferentially exhibiting an HLB d '' about 16 (like Dermofeel® G 10 L from Dr. Straetmans GmbH / Evonik).
- the O / W emulsifier of natural origin is preferably chosen from alkyl polyglucosides, sometimes also called alkyl polyglycosides, and designated by the acronym APG. These emulsifiers are nonionic surfactants well known per se.
- Patent FR 2 948 285 makes a presentation in terms of structure, and explains how to prepare them. They can be represented by the following general formula (I): R1 -0- (R2-0) p- (S) n in which:
- -S represents a reducing saccharide, which can comprise between 5 and 6 carbon atoms
- -R1 denotes a linear or branched alkyl and / or alkenyl radical, preferably comprising approximately 8 to 24 carbon atoms, or an alkylphenyl radical, preferably an alkylphenyl radical in which the linear or branched alkyl group contains approximately from 8 to 24 carbon atoms,
- -R2 denotes an alkylene radical containing from 2 to 4 carbon atoms
- -n denotes a value ranging from 1 to 15,
- -p denotes a value ranging from 0 to 10.
- reducing saccharide By reducing saccharide, is meant in formula (I), saccharide derivatives which do not have in their glycosidic binding structures established between an anomeric carbon and oxygen of an acetal group as defined in the reference work: "Biochemistry”, Daniel Voet / Judith G. Voet, p. 250, John Wyley & Sons, 1990.
- the oligomeric structure (S) n can be in any form of isomerism, be it optical isomerism, geometric isomerism or position isomerism; it can also represent a mixture of isomers.
- S represents a reducing saccharide chosen from glucose, dextrose, saccharose, fructose, idose, gulose, galactose, maltose, isomaltose, maltotriose, lactose, cellobiose, mannose, ribose, xylose, arabinose, lyxose, allose, altrose, dextran or tallose and more particularly a reducing saccharide chosen from glucose, xylose or arabinose.
- a first preferred variant of alkyl polyglucosides according to the present invention are C12-C20 alkyl glucosides, that is to say the compounds of formula (I) in which:
- -R1 more particularly denotes a linear or branched alkyl and / or alkenyl radical containing approximately from 12 to 20 carbon atoms,
- -R2 denotes an alkylene radical containing from 2 to 4 carbon atoms
- -p takes a value ranging from 0 to 3, and preferably equal to zero
- -S denotes glucose, fructose or galactose, and more preferably glucose
- a second preferred variant of alkyl polyglucosides according to the present invention are the C12-C20 alkyl glucosides of the first preferred variant in which: -R1 more particularly denotes a linear alkyl radical containing about 12 to 20 carbon atoms
- Alkyl polyglucosides of formula (I) are in particular commercially available under the names: Plantacare® 810 UP (R1 is C8-C10 / INCI: caprylyl / capryl glucoside), Plantacare® 818 UP (FM is C8 -C16 / INCI: Coco-glucoside), Plantacare® 2000 UP (FM is in C8-C16 / INCI: decyl glucoside) and Plantacare® 1200 UP (FM is in C12-C16 / INCI: lauryl glucoside) sold by BASF ; Macanol® 810 (FM is C8-C10), Macanol® 1200 (FM is C12-C14), Macanol® 816 (mixture of FM is C8, C10, C12, C14, C16) sold by the company FCI Technology; Neocare MF 0718 (FM is C8-C10 / INCI: caprylyl / capryl glucoside), Neocare
- the O / W emulsifier of natural origin is preferably a mixture consisting of at least one alkyl polyglucoside and at least one fatty alcohol.
- the alkyl polyglucosides can be chosen from all the alkyl polyglucosides useful for the invention described above.
- fatty alcohols useful for mixing with alkyl polyglucosides we will find linear or branched fatty alcohols having a total number of carbon atoms ranging from 8 to 24.
- alkyl polyglucosides and fatty alcohols useful for the invention and commercially available are those sold by the company SEPPIC: Montanov TM 14 (INCI: Myristyl Alcohol & Myristyl Glucoside), Montanov TM 202 (INCI : Arachidyl Alcohol and Behenyl Alcohol and Arachidyl Glucoside), Montanov TM 68 (INCI: Cetearyl Alcohol & Cetearyl Glucoside), Montanov TM 82 (INCI: Cetearyl Alcohol and Coco-Glucoside), Montanov TM S (INCI: Coco- Glucoside & Coconut Alcohol ), Montanov TM L (INCI: C14-22 Alcohols & C12-20 Alkyl Glucoside).
- the preferred mixture of alkyl polyglucoside and fatty alcohol is that sold by SEPPIC under the name "Montanov TM L", which is a mixture of C14-C22 fatty alcohols and C12-C20 alkyl polyglucosides (INCI: C14-22 Alcohols & C12-20 Alkyl Glucoside).
- a preferred variant of the emulsifying composition according to the invention thus comprises as an oil-in-water emulsifier of natural origin mixture consisting of at least one alkyl polyglucoside and at least one fatty alcohol, preferably at least a C12-C20 alkyl polyglucoside and at least one linear or branched fatty alcohol having a total number of carbon atoms ranging from 8 to 24, and most preferably a mixture of C14-C22 fatty alcohol and alkyl C12-C20 glucoside.
- the O / W emulsifier of natural origin can also be chosen from fatty esters of dextrins or hydrolyzed starches, in particular in the form of sodium octenylsuccinate esters. These may for example be products marketed by the Applicant under the names this CLEARGUM® and in particular the products CLEARGUM® CO 01 and CLEARGUM® CO 03.
- the emulsifying composition according to the invention makes it possible to obtain emulsions easier to spread, having a more powdery and softer feel, a clearly lower screech, penetrating more quickly on keratin materials, and leading little or no fluffing.
- the emulsifying composition according to the invention also makes it possible to obtain interesting sensory effects, such as a particular texture or a feeling of freshness, according to the proportions used.
- each of the different constituents of the emulsifying composition according to the invention can be integrated into a different phase of the final emulsion, before the emulsification is carried out.
- the various compounds of the present composition according to the invention are mixed together to form a premix (or premix according to English terminology), said premix can be added to any of the phases of the emulsion in which the premix will be used.
- the invention advantageously allows these two embodiments with the same compounds, which allows increased room for maneuver and simplified use.
- the emulsifying composition according to the invention has the particular advantage of being completely of natural origin, and of being usable according to a "cold" process (that is to say implemented at room temperature ).
- Said composition according to the invention is, in particular, for cosmetic use and, as such, is not sensitive to small variations in pH or of salinity of the medium, is not irritating and is not likely to cause allergies, especially skin allergies.
- the composition according to the invention can be used to make any type of emulsion, in particular Pickering type emulsions, and is therefore suitable for a wide variety of uses: creams, milks, serums, lotions, etc.
- the emulsifying composition may contain water in a form known as "constituting or bound” and / or in a form known as "free".
- the water of constitution or bound consists of the water molecules included in the crystal structure of the cyclodextrin and / or polyol powders, and of the water molecules adsorbed on the surface of these powders by physical balance of hydration.
- Free water is made up of water molecules which can circulate freely between cyclodextrin and / or polyol powders. This free water can in particular suspend the cyclodextrin and / or polyol powders.
- the emulsifying composition comprises a constitution or bound water content of between 1% and 25%, by weight relative to the total weight of said emulsifying composition.
- the water content of the constitution or bound is between 2% and 15%, very preferably between 3% and 10%.
- the emulsifying composition may comprise free water at a content less than or equal to 50% by weight relative to the total weight of said emulsifying composition.
- this free water content is less than or equal to 40%, more preferably 30%, and most preferably 20%.
- the emulsifying composition also comprises at least one polyol.
- the polyols targeted by this Application are all the polyols known elsewhere, and in particular maltitol, mannitol, xylitol, erythritol, sorbitol, glycerol, glycerol and sorbitol being the preferred polyols.
- this polyol is crystallized or is in the form of a powder.
- the invention relates to an emulsifying composition, in particular for cosmetic use and capable of making it possible to obtain an emulsion of the oil-in-water (O / W) liquid type which comprises, or preferably which consists of:
- this emulsifying composition according to the present invention comprises, or preferably consists of:
- composition according to the present invention comprises, or preferably consists of:
- the oil-in-water emulsifier of natural origin is chosen from: at least one alkyl polyglucoside; or at least a mixture of at least one alkyl polyglucoside and at least one fatty alcohol; or at least one non-ethoxylated fatty ester of polyols. More preferably, the emulsifier is chosen from mixtures of at least one alkyl polyglucoside and at least one fatty alcohol.
- Emulsion preferably of the Pickering type, using the emulsifying composition
- the emulsifying composition according to the invention makes it possible to produce emulsions, preferably of the Pickering type, which can advantageously be stabilized by organic particles compatible with the skin or the hair.
- the so-called “pickering” emulsions are obtained by replacing the surfactants with emulsifying systems composed of solid microparticles in association with fatty substances.
- the emulsifying composition according to the invention may additionally comprise other products capable of forming or stabilizing Pickering emulsions such as silicas and octenylsuccinate starches in the form of calcium or aluminum salts.
- Another object of the present invention therefore relates to an emulsion, preferably of the oil-in-water (O / W) Pickering type, in particular for cosmetic use, characterized in that it contains at least one cyclodextrin in the form of solid particles, said particles having an average size in volume d (4.3) measured by laser granulometry, less than or equal to 20 pm, more preferably between 2 and 20 pm, preferably between 3 and 12 pm, and more preferably between 4 and 8 pm,
- emulsifier of natural HLB origin greater than or equal to 8, preferably greater than or equal to 9, in an emulsifier / cyclodextrin ratio (weight / weight) of between 0.01: 1 and 1: 1, preferably between 0.15: 1 and 0.30: 1.
- Said emulsifier of natural origin is preferably chosen from alkyl polyglucosides, mixtures of at least one alkyl polyglucoside and at least one fatty alcohol, and non-ethoxylated fatty esters of polyols,
- the emulsion in particular from Pickering, using the emulsifying composition according to the invention, comprises an aqueous phase composed, in addition, of water.
- the water content in the emulsion is between 50% and 95%, preferably between 60% and 92%, very preferably between 65% and 90%, by weight relative to the total weight of the emulsion.
- the emulsion according to this embodiment is ready for use, and can therefore be used without adding additional water by the user.
- the water content in the emulsion is between 2% and 50%, preferably between 5% and 35%, very preferably between 10% and 40%, by weight relative to the total weight of the emulsion.
- the emulsion according to this embodiment has the advantage of reducing the total mass of the containers such as flasks, bottles, or jars, by reducing the mass of water present in the emulsion. This reduces transport costs and the amount of exhaust gas released for this transport. The user may need to add water at the time of use to ensure proper use of this embodiment of the emulsion.
- the emulsion, in particular of Pickering O / W, using the emulsifying composition according to the invention can also comprise a fatty phase which can be liquid at room temperature (25 ° C), such as for example vegetable oils , or solid as in the case of waxes.
- This liquid fatty phase can be of mineral, animal, vegetable or synthetic origin and be composed of hydrocarbon oils or possibly oils of silicones.
- hydrocarbon-based oil means an oil formed essentially, or even made up, of carbon and hydrogen atoms and optionally of oxygen or nitrogen atoms, which may contain alcohol, ester, ether, carboxylic acid, amine groups. and / or amide.
- the emulsion using the emulsifying composition according to the invention may comprise one or more oils, preferably at least one non-volatile liquid oil.
- non-volatile liquid oil is intended to mean an oil capable of remaining on the skin at ambient temperature, at atmospheric pressure for at least one hour.
- the liquid fatty phase advantageously comprises one or more non-volatile oils which provide an emollient effect on the skin.
- fatty esters such as cetearyl isononoate, isotridecyl isononoate, isostearyl isostearate, isopropyl isostearate, isopropyl myristate, isopropyl palmitate, butyl stearate , hexyl laurate, isononyl isononate, 2-ethyl-hexyl palmitate, 2-hexyldecyl laurate, 2-octyl decyl palmitate, myristate or 2-octyldodecyl lactate, succinate of 2-diethyl hexyl, diisostearyl malate, tracetin, tricprin, caprylic / capric acid triglycerides, glycerin triisostearate, tocopherol acetate,
- oils can be oils of the hydrocarbon or silicone type such as paraffin oil, squalane oil, petrolatum, dimethyl siloxanes and their mixtures.
- the liquid fatty phase can also optionally comprise volatile oils.
- volatile oil is meant an oil capable of evaporating from the skin, in less than an hour at room temperature and atmospheric pressure.
- the volatile oils can for example be chosen from silicone oils or triglycerides of short fatty acids to reduce the greasy feel.
- the emulsion type composition in particular of Pickering O / W, using the emulsifying composition according to the invention contains only oils of renewable origin and in particular oils or butters of vegetable origin, preferably refined.
- oils and butters are perfectly suited to the emulsifying system used in the emulsifying composition which is the subject of the invention in the sense that they make it possible to obtain very stable emulsions, with high whiteness and an easily adjustable viscosity.
- the emulsifying composition according to the invention advantageously makes it possible to prepare oil-in-water emulsions with very high oil content. This type of oil-rich O / W emulsion is usually difficult to obtain in a stable form over time with conventional emulsifiers.
- the oil content of the O / W emulsion using the emulsifying composition according to the invention is preferably between 10 and 65% by weight, and preferably of the order of 20 to 55% by weight, relative the total weight of the emulsion.
- Vegetable or vegetable oils such as, for example, sunflower oil and isopropyl palmitate make it possible in particular to obtain stable emulsions, not giving rise to creaming or phase shifting.
- the emulsion using the emulsifying composition according to the invention may also comprise a rheology agent such as in particular a thickening agent for the aqueous phase, or a gelling agent or a suspending agent, such as for example the gums obtained plants such as gum arabic, konjac gum, guar gum or their derivatives; gums extracted from algae such as alginates or carrageenans; gums obtained from microbial fermentation such as xanthans, mannans, scleroglucans or their derivatives; cellulose and its derivatives such as carboxymethylcellulose or hydroxyethylcellulose; starch and its derivatives such as in particular modified starches, in particular acetylated, carboxymethylated, octenylsuccinates or hydroxypropylated; synthetic polymers such as polyacrylic acids or carbomers.
- a rheology agent such as in particular a thickening agent for the aqueous phase, or a gelling agent or a suspending agent
- the emulsion using the emulsifying composition according to the invention comprises a rheology agent chosen from natural polysaccharides derived from plants or from fermentation, optionally modified.
- a rheology agent chosen from natural polysaccharides derived from plants or from fermentation, optionally modified.
- Xanthan and its derivatives make it possible in particular to obtain oil-in-water emulsions with very fine drop sizes, even when used at a content of less than 1% by weight, relative to the total weight of the emulsion.
- the emulsions using the emulsifying composition according to the invention are preferably in the form of a fatty phase dispersed in an aqueous phase, said dispersed fatty phase being in the form of medium-sized drops. number less than or equal to 30 pm, preferably less than or equal to 10 pm.
- a small drop size increases the stability of the emulsion by reducing the flocculation rate of the emulsion, and therefore the speed of phase separation.
- the average drop size depends on a large number of parameters and, as such, constitutes a characteristic which should be controlled and which is not intrinsic to the formulation of the emulsifying composition.
- the average drop size can be measured using a LEICA DMLS optical microscope at x10 magnification, followed by counting and calculating a number average over at least ten drops.
- the emulsion using the emulsifying composition according to the invention may further comprise a preservative chosen from benzyl alcohol, dehydroacetic acid and their mixtures.
- the emulsion using the emulsifying composition according to the invention preferably has a viscosity greater than 3000 mPa.s at 25 ° C, preferably greater than 5000 mPa.s at 25 ° C.
- the viscosity is measured using a Brookfield DV-11 + Pro viscometer rotated at a speed of 20 rotations per minute in contact with the product sample. The resistance of the product to this rotational movement is recorded for one minute and converted to "mPascal. second ”, usually noted mPa.s. For each sample, the viscosity is measured three times and the arithmetic mean of the three values is used.
- sensory descriptors and a corresponding sensory evaluation protocol are used in 5 steps. These 5 stages correspond to the different phases of application of a skincare product: appearance, handling, application, spreading after 1 minute, and spreading after 2 minutes. During these 5 phases, several sensory descriptors are evaluated by a panel of ten evaluators, in order to compare an emulsion according to the invention to an emulsion according to patent application FR1853362 filed by the present applicant.
- the emulsions according to the invention are distinguished from the emulsions according to patent FR1853362 on the sensory properties of fluidity, powder, spreading, greasy, soft, crunching, penetrating, and fluffing.
- the emulsions according to the invention provide a less fluid texture, but all the same easier to spread and which penetrates more quickly, as well as a more oily feel, but all the same more powdery, softer and less crunchy. In addition, there are fewer or no fluff depending on the skin.
- the emulsifying composition according to the invention allows the easy production of oil-in-water O / W emulsions which are both very stable and very fine, with modular textures and having a fresh, silky touch and little fatty, even for high contents in dispersed fatty phase. It is thus possible to obtain emulsions having a good emollient effect on the skin as well as a good hydrating effect of the upper layers of the epidermis.
- This emulsifying composition in particular allows the easy production of very fine O / W emulsions with varied textures, very compatible with the skin and also having a dry, fresh and silky feel, even with a high content. in the fatty phase in the emulsion.
- Another object of the present invention consists of a process for manufacturing a liquid oil-in-water emulsion, preferably from Pickering, in particular for cosmetic use, comprising the following steps:
- a) the dispersion, in an aqueous phase, of an emulsifying composition comprising at least one cyclodextrin in the form of solid particles, said particles having a volume average size d (4.3) measured by laser particle size, between 2 and 20 ⁇ m, preferably between 3 and 12 ⁇ m, and more preferably between 4 and 8 ⁇ m, and at least one original emulsifier natural chosen from oil-in-water emulsifiers, having an HLB greater than or equal to 8, and more preferably an HLB greater than or equal to 9, in an emulsifier / cyclodextrin ratio of between 0.01: 1 and 1: 1, preferably between 0.15: 1 and 0.30: 1,
- step b) adding to the mixture obtained in step a) a fatty phase, in an amount of between 10 and 65% by weight, relative to the total weight of the composition, with stirring to allow the dispersion of the phase fatty in the aqueous phase in the form of drops of average size in number less than 30 pm, preferably less than or equal to 10 pm.
- the method according to the invention for manufacturing a liquid oil-in-water emulsion preferably of the Pickering type, in particular for cosmetic use, comprises the following steps:
- emulsifier of natural origin chosen from oil-in-water emulsifiers, having an HLB greater than or equal to 8, and more preferably an HLB greater than or equal to 9, in an emulsifier / cyclodextrin ratio of between 0.01 : 1 and 1: 1, preferably between 0.15: 1 and 0.30: 1, the fatty phase preferably representing between 10 and 65% by weight, and preferably between 20 and 55% by weight, relative to the final weight of the emulsion,
- step b) and adding the mixture obtained in step a) to an aqueous phase with stirring to allow the dispersion of the fatty phase in the aqueous phase in the form of drops of average size in number less than 30 ⁇ m, preferably less or equal to 10 pm.
- the original emulsifier natural is chosen from at least one alkyl polyglucoside, at least one mixture of at least one alkyl polyglucoside and at least one fatty alcohol, and at least one non-ethoxylated fatty ester of polyols, more preferably chosen from mixtures of at least one alkyl polyglucoside and at least one fatty alcohol.
- a cyclodextrin in the form of solid particles having a volume average size d (4.3) measured by laser particle size, less than or equal to 20 ⁇ m, more preferably between 2 and 20 ⁇ m, preferably between 3 and 12 ⁇ m , and more preferably between 4 and 8 pm,
- emulsifiers of the oil-in-water type having a Hydrophilic-Lipophilic balance greater than or equal to 8, most preferably greater than or equal to 9, the HLB of the whole of the emulsifying system of said composition also being greater than or equal to 8, preferably greater than or equal to 9,
- the water temperature is set at 40 ° C when the gelling agent is xanthan gum, and at 70 ° C when the gelling agent is hydroxyethylcellulose.
- the beta-cyclodextrin is then wetted in glycerin and the beta-cyclodextrin / glycerin mixture is added to the water / gelling agent mixture with stirring 1000 rpm, in order to obtain an aqueous phase.
- the amount of beta cyclodextrins is fixed at 5% by mass of the composition.
- alkyl polyglucoside MONTANOV L (INCI: cetearyl alcohol & cetearyl glucose), from the company SEPPIC, is added in sunflower oil or in isopropyl palmitate with magnetic stirring, at 40 °. C to obtain an oily phase.
- the oily phase is then emulsified in the aqueous phase at 40 ° C with stirring at 1500 rpm, for 15 minutes.
- a preservative (mixture based on benzyl alcohol and dehydroacetic acid) is added.
- physicochemical characteristics are measured, namely the viscosity and the average size in number of the drops, and sensory characteristics are measured, namely slippery, spreading, fat, softness, crunching, penetrating, powdery and fluffy.
- the viscosity is measured using a Brookfield DV-ll + Pro viscometer.
- a fixed-size mobile (mobile SP2 to SP7 used according to the viscosity levels in accordance with the instructions of the device) is rotated at a speed of 20 revolutions per minute in contact with the sample produced. The resistance of the product to this rotational movement is recorded for one minute and converted to millipascal seconds. For each sample, the viscosity is measured three times and the arithmetic mean of the three values is used.
- a spindle suitable for the viscosity measured is selected according to the following ranges: the spindle chosen is the spindle SP3 when the viscosity is less than or equal to 5,000 mPa.s, SP4 when the viscosity is between 5,000 mPa.s and 7,000 mPa.s and SP5 when the viscosity is greater than or equal to 7000 mPa.s.
- the number average size of the drops is determined by performing the arithmetic average of the drop sizes measured with an optical microscope at 10 ⁇ magnification, on a representative number of drops, typically at least 10 drops.
- the microscope used is a LEICA DMLS.
- the sensory characteristics are evaluated by a panel of ten people who are experts in the analysis of the texture of cosmetic products.
- the powdery descriptor is evaluated between the 2nd and the 5th rotation. The fingers glide well on the skin. The product is perceived as a powdery substance on the skin.
- -The spreading is evaluated by examining the product after having deposited on the hand 50 to 100 ⁇ L of the product, during its spreading in 10 rotations, under a lamp. The spread is all the more important as there is little resistance to movement between the 5 th and the 10 th turn on the hand.
- the last descriptors are evaluated after performing the 10 rotations.
- the examination is carried out under the lamp, on the skin, 1 minute after the product has been spread 50 to 100mI.
- the soft descriptor is evaluated by sliding on the skin, a dry and slippery touch is felt.
- the crunching descriptor is evaluated by sliding the thumb over the index finger, a brake is felt and a creaking noise is heard.
- the examination is carried out under the lamp, on the skin, 2 minutes after the spreading of 50 to 100 ⁇ L of the product.
- the penetrating descriptor of the product is evaluated by sliding it over the skin. A panel of assessors then assesses the amount of product residue recovered.
- the fluff is evaluated by performing a mechanical friction action on the skin, the product causes the formation of fluff.
- the two emulsions have substantially equal viscosities, around 12,000 mPa.s, and have drop sizes less than 10 ⁇ m.
- Table 3 presents the sensory perceptions obtained with the emulsion prepared with the emulsifying composition according to the invention, compared to the sensory perceptions obtained with an emulsion prepared with a reference emulsifying composition.
- the criteria of improved sensory properties in the emulsion according to the invention are: powdered, spreading, fatty, soft, crunchy, penetrating, fluffing.
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- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Veterinary Medicine (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Birds (AREA)
- Epidemiology (AREA)
- Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
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Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR1872345A FR3089415B1 (fr) | 2018-12-05 | 2018-12-05 | Composition émulsionnante constituée d’un émulsionnant huile-dans-eau et d’une cyclodextrine de granulométrie sélectionnée, apte à fournir une émulsion huile-dans-eau avec effets sensoriels améliorés, à usage cosmétique. |
| PCT/FR2019/052930 WO2020115437A1 (fr) | 2018-12-05 | 2019-12-04 | Composition émulsionnante constituée d'un émulsionnant huile-dans-eau et d'une cyclodextrine de granulométrie sélectionnée, apte à fournir une émulsion huile-dans-eau avec effets sensoriels améliorés, à usage cosmétique |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP3890682A1 true EP3890682A1 (fr) | 2021-10-13 |
Family
ID=66690473
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP19868207.2A Pending EP3890682A1 (fr) | 2018-12-05 | 2019-12-04 | Composition émulsionnante constituée d'un émulsionnant huile-dans-eau et d'une cyclodextrine de granulométrie sélectionnée, apte à fournir une émulsion huile-dans-eau avec effets sensoriels améliorés, à usage cosmétique |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US20220023187A1 (fr) |
| EP (1) | EP3890682A1 (fr) |
| JP (1) | JP7562533B2 (fr) |
| CN (1) | CN113329729B (fr) |
| FR (1) | FR3089415B1 (fr) |
| WO (1) | WO2020115437A1 (fr) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP7778337B2 (ja) * | 2020-12-25 | 2025-12-02 | 株式会社希松 | 水中油滴型乳化物 |
Family Cites Families (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5858139A (ja) * | 1981-10-01 | 1983-04-06 | Nippon Saafuakutanto Kogyo Kk | 乳化剤組成物及びその製造法 |
| US5429628A (en) * | 1993-03-31 | 1995-07-04 | The Procter & Gamble Company | Articles containing small particle size cyclodextrin for odor control |
| FR2720632B1 (fr) | 1994-06-03 | 1996-07-05 | Oreal | Compositions cosmétiques photoprotectrices contenant un système filtrant les rayons UV et des polymères particuliers et utilisations. |
| DE19842766A1 (de) | 1998-09-18 | 2000-03-23 | Beiersdorf Ag | Emulgatorfreie feindisperse Systeme vom Typ Öl-in-Wasser und Wasser-in-Öl |
| FR2858777B1 (fr) | 2003-08-12 | 2007-02-09 | B Rossow Et Cie Ets | Procede de formulation d'emulsions huile-dans-eau complexes et stables, formulations ainsi obtenues et procede de formulation de produits contenant les dites emulsions |
| DE102006031500A1 (de) | 2006-07-06 | 2008-04-17 | Henkel Kgaa | O/W-Emulsion |
| FR2940117B1 (fr) | 2008-12-18 | 2011-02-18 | Oreal | Emulsion huile dans eau presentant un ph allant de 3 a 5,5 |
| JP2011006641A (ja) | 2009-06-29 | 2011-01-13 | Fancl Corp | γ−シクロデキストリン |
| FR2948285B1 (fr) | 2009-07-27 | 2011-09-23 | Soc Dexploitation De Produits Pour Les Industries Chimiques Seppic | Emulsion huile-dans-eau a proprietes sensorielles ameliorees |
| JP2014122192A (ja) | 2012-12-21 | 2014-07-03 | L'oreal Sa | 油、非イオン界面活性剤及びキサンチン塩基を含む化粧品組成物 |
| FR2999924B1 (fr) | 2012-12-21 | 2015-07-17 | Oreal | Association d'actifs comprenant au moins une huile essentielle, une cyclodextrine et un corps gras liquide et composition la contenant. |
| JP6367003B2 (ja) | 2014-05-28 | 2018-08-01 | 株式会社ディーエイチシー | 水中油型乳化化粧料 |
| CN105832568B (zh) * | 2016-03-26 | 2018-06-05 | 佛山市芊茹化妆品有限公司 | 一种固体微乳剂及其制备方法和应用 |
| KR102569626B1 (ko) * | 2016-12-08 | 2023-08-22 | 미쯔비시 케미컬 주식회사 | 수중유형 유화 조성물, 및 그 수중유형 유화 조성물의 제조 방법 |
| FR3075604B1 (fr) | 2017-12-21 | 2020-07-03 | Roquette Freres | Composition emulsionnante et procede de fabrication d'une composition de type emulsion de pickering h/e. |
| FR3080041B1 (fr) | 2018-04-17 | 2020-10-16 | Roquette Freres | Composition emulsifiante a usage cosmetique, pour l'obtention d'une emulsion de pickering h/e, et procede de fabrication d'une telle emulsion |
| FR3089416B1 (fr) * | 2018-12-05 | 2021-04-02 | Roquette Freres | Composition émulsionnante comprenant un émulsionnant eau-dans-huile et une cyclodextrine de granulométrie sélectionnée, apte à fournir une émulsion huile-dans-eau avec effets sensoriels améliorés, à usage cosmétique. |
-
2018
- 2018-12-05 FR FR1872345A patent/FR3089415B1/fr active Active
-
2019
- 2019-12-04 WO PCT/FR2019/052930 patent/WO2020115437A1/fr not_active Ceased
- 2019-12-04 EP EP19868207.2A patent/EP3890682A1/fr active Pending
- 2019-12-04 CN CN201980086742.1A patent/CN113329729B/zh active Active
- 2019-12-04 US US17/309,565 patent/US20220023187A1/en not_active Abandoned
- 2019-12-04 JP JP2021530261A patent/JP7562533B2/ja active Active
Also Published As
| Publication number | Publication date |
|---|---|
| JP7562533B2 (ja) | 2024-10-07 |
| US20220023187A1 (en) | 2022-01-27 |
| FR3089415A1 (fr) | 2020-06-12 |
| WO2020115437A1 (fr) | 2020-06-11 |
| JP2022510657A (ja) | 2022-01-27 |
| CN113329729B (zh) | 2025-05-27 |
| CN113329729A (zh) | 2021-08-31 |
| FR3089415B1 (fr) | 2021-04-02 |
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