KR102055026B1 - Colour changing composition with uv filter(s) - Google Patents

Abstract

Color changing compositions for care and / or makeup of keratin materials, in a physiologically acceptable medium, comprising at least:
a) microcapsules containing releasable colorant (s),
A core comprising one organic material,
At least one laminate coating surrounding the core,
One or more polymers,
One or more colorants, and
Advantageously at least one lipid-based material
Laminated coating comprising
Microcapsules comprising,
b) at least 3% by weight, preferably at least 5% by weight, more preferably at least 8% by weight, advantageously at least 10% by weight, polyols, glycols, C ₂ -C ₈ monoalcohols, and An aqueous phase comprising water and one or more compounds selected from mixtures thereof, and
c) one or more UV filters.

Description

색상 COLOR CHANGING COMPOSITION WITH UV FILTER (S)}

The present invention relates in particular to a color-changing composition comprising at least one sunscreen and optionally other active agent (s), useful for the care, hygiene and / or makeup of keratin materials.

In particular, the color changing composition according to the invention can be used in any type of cosmetic composition such as foundation, face powder, eyeshadow, concealer product, blusher, lipstick, lip balm, lip gloss, lip pencil, eye pencil, eyeliner, mascara, body Care products such as makeup products, skin colorants, care creams, 'BB' products (Blemish Balm products that can cover defects), tinted cream or sunscreen products, preferably foundation or ' BB 'product. The color change composition according to the invention may be a liquid, a solid or a powder.

The compositions of the present invention are in particular compositions intended to be applied to keratin materials, in particular skin, more particularly facial skin, such as facial skin care or makeup products.

In another embodiment, the composition of the present invention is mascara.

In another embodiment, the composition of the present invention is a lip product, in particular lip gloss, lip balm or lipstick.

Cosmetic compositions, in particular foundations, are commonly used to hide skin defects such as redness and / or marks as well as to provide aesthetic color to the skin. In this regard, many formulations have been developed to date.

In this respect, there is a growing interest in cosmetic products that provide a change in color against external factors such as, for example, shear forces.

In general, this object is achieved by the inclusion of a microencapsulated colorant in the cosmetic composition, which, upon application on the skin, provides the expected color change. More particularly, the change in color is provided by colorant-containing microcapsules, which, upon rupture by the application of mechanical force, release the trapped colorant into the composition, changing its color. Mechanical action, such as rubbing, diffuses the topical composition and promotes penetration into the skin. Immediate color change of the composition provides a visual aesthetic effect.

Different types of entrapped colorants, more particularly pigment-containing microcapsules, are already available. These mainly depend on the type of capture and / or encapsulation of the substance (s).

Thus, as a pigment encapsulated by microcapsules in acrylic and / or methacrylic acid polymers or copolymers, for example, ethyl acrylate / methacryl, sold by the company Tagra and described in WO-A-01 / 35933 Mention may be made of microcapsules containing copolymers of acid ammonium salts. In addition, TAGRA BIOTECHNOLOGIES company name BLACKCAP1 ^ⓒ , YELLOWCAP1 ^ⓒ , REDCAP1 ^ⓒ , BLACKCAP3 ^ⓒ , YELLOWCAP3 ^ⓒ , REDCAP3 ^ⓒ Commercially encapsulated pigments may be mentioned.

As pigments encapsulated by microspheres in cellulose derivatives, mention may be made, for example, of spheres comprising cellulose, hydroxypropyl methylcellulose (commercially available from Induchem under the name Unisphere ^ⓒ ).

As pigments encapsulated by microcapsules in polymers of polyesters, polyaminomethacrylates, polyvinylpyrrolidones, hydroxypropylmethylcellulose, shellac types and mixtures thereof, in particular described in US application US 2011/0165208 to Biogenics. And commercially available under the name Magicolor ^ⓒ from Biogenics.

As other pigments encapsulated by microcapsules, mention may also be made of what is disclosed in JP2011-79804 (from DAITO) and also mention may be made of pigment-encapsulated bilayer microcapsules comprising at least three of the following: (a ) Mannitol, (b) hydrogenated lecithin, (c) polymethylmethacrylate, (d) cellulose and (e) shellac.

Said bilayer microcapsules comprise one of the microcapsules which are preferably used according to the invention, which do not comprise an uncoloured core, but instead comprise a colored inner layer containing the abovementioned components, the abovementioned components They are all mixed together and then granulated.

However, for some colorant-containing microcapsules, when applied to different environments and conditions, it may be difficult to permanently maintain the colorant for a long time. This is the case with pigments, oil soluble dyes, and water soluble dyes. Thus, some microcapsules described in patents and publications have been found to gradually release colorants or “bleed” over time when tested for extended periods at elevated temperatures. Color bleed is obtained through contact with moisture and / or other ingredients in the formulation, such as alcohols or glycols, surfactants, silicones, oils, preservatives, salts and other ingredients commonly found in cosmetic formulations. Occurs when the pigment moves through or away from microspheres / microcapsules. Leaching or smearing of colorants in cosmetic compositions can impair the long-term visual effects of cosmetics both in the container and on the substrate.

Furthermore, some pigment-containing microcapsules can give lower coverage effects than expected.

Furthermore, some pigment-containing microcapsules are destroyed immediately after application, resulting in sudden color changes, making it impossible to recognize intermediate stages of these color changes or to adjust the color gradation.

Furthermore, some pigment-containing microcapsules may have some stability issues depending on the cosmetic composition and regarding the solvent / components involved.

Furthermore, some pigment-containing microcapsules may have a gray aspect that imparts an unattractive color in the bulk of the cosmetic composition.

If the topical composition comprises one or more sunscreens and optionally other active agent (s), ensure that these sunscreen agents and active agent (s) penetrate deep enough into the skin and / or spread wide enough on the skin to be effective. It is essential.

Unfortunately, consumers cannot easily determine the skin area to which the desired active agent (s) are applied and often do not want to spend time applying such compositions onto their skin. Therefore, there is a possibility that the topically applied amount of the active agent at the end of the application is not evenly distributed on the skin and / or does not penetrate deep into the skin.

Finally, some microcapsules may provide an uncomfortable and / or undesirable feeling when a cosmetic formulation comprising the same is applied onto the keratin materials.

Accordingly, there is a need to provide a cosmetic composition comprising colorant-containing microcapsules having improved color bleed resistance. In this respect, there is a need for colorant-containing microcapsules, in which the capsules have good shatter resistance and exhibit improved bleed resistance. In cosmetic compositions, if the dye is not permanently retained, this may impair the long-term visual effects of the cosmetic.

It is also desired to provide a cosmetic composition in which the desired coloration or gradation pattern is adjustable by changing the method or intensity of application on the skin, or by using microcapsules containing different colorants.

There is also a need to provide a variety of related solvents / components and stable cosmetic compositions.

It is also desired to provide cosmetic compositions in which the microcapsules are visible or non-visible within the bulk of the composition, depending on the desired appearance.

There is also a need for cosmetic compositions containing pigment-encapsulated microcapsules that do not cause discomfort to the user upon application.

There is also a need to provide a cosmetic composition containing pigment-encapsulated microcapsules that decomposes quickly and rapidly upon application, leading to a colored composition without any granular appearance while providing a liquid feel on the skin. In particular, the composition may exhibit different hue or color gradients depending on the rubbing strength.

There is also a need to provide pigment-encapsulated microcapsules with sufficient hardness to be mixed in industrial processes without modification. Advantageously, the hardness of the microcapsules is not significantly reduced during the manufacturing process.

There is also a need to stimulate users to extend the gesture of application and therefore to focus on the uniformity of transmission and distribution of sunscreen (s) and optionally other active agent (s) on the skin.

It is also desired to provide a cosmetic composition comprising colorant-containing microcapsules and active agent (s) having a color indication for delivery of the active agent (s) to ensure that all desired skin areas are covered with the active agent (s). .

It has further been found that some microcapsules impart an altered visual appearance to the cosmetic composition during storage, namely color fading. Under certain conditions, the composition, ie, the physiologically acceptable medium, changes yellowish.

While still optimizing the stability of the microcapsules in the bulk and specifically maintaining the color of the bulk, for example white or clear, while reducing the coloring effect of the bulk, in particular the sulfidation of the bulk, which can occur in the presence of the microcapsules To be required.

It is also desired to provide a microcapsule, and also a cosmetic composition in which the visual appearance of the composition itself does not change during storage. This technical problem has been solved by the composition according to the invention comprising at least one special UV filter.

Surprisingly and advantageously, the composition according to the invention fulfills the requirements of the prior art.

Accordingly, according to one of the above aspects, the subject matter of the present invention is a color changing composition for the care and / or makeup of keratin materials comprising at least a physiologically acceptable medium:

a) microcapsules containing releasable colorant (s),

A core comprising one organic material,

At least one laminate coating surrounding the core,

One or more polymers,

One or more colorants,

And advantageously at least one lipid based material

Microcapsules comprising,

b) at least 3% by weight, preferably at least 5% by weight, more preferably at least 8% by weight, advantageously at least 10% by weight, polyols, glycols and C ₂ -C ₈ monoalcohols, and An aqueous phase comprising water and one or more compounds selected from mixtures thereof,

c) one or more UV filters.

Preferably, the microcapsules comprise at least two layers, preferably at least one organic inner layer and one organic outer layer of different color.

Preferably, the core comprises, as the organic material, at least one monosaccharide or derivative thereof, in particular monosaccharide-polyol selected from mannitol, erythritol, xylitol, sorbitol and mixtures thereof, preferably mannitol.

Preferably, the laminate coating surrounding the core is a polysaccharide and a derivative, preferably several types of sugars comprising one type of sugar or several types of sugar (s), preferably at least D-glucose units. One or more hydrophilic polymer (s) selected from the group consisting of starch and derivatives, in particular starch and derivatives, cellulose or derivatives, more preferably starch and derivatives.

Preferably, the microcapsules include one or more lipid-based substances, preferably with amphiphilic properties, such as lecithin, in particular hydrogenated lecithin.

Advantageously, the core corresponds to 1% to 50% by weight, preferably 5% to 30% by weight, in particular 10% to 20% by weight, relative to the total weight of the microcapsules.

Advantageously, the colorant (s) comprises 20% to 90% by weight, preferably 30% to 80% by weight relative to the microcapsules; In particular 50% to 75% by weight.

Advantageously, the microcapsules have a size of from 50 μm to 800 μm, in particular from 60 μm to 600 μm, in particular from 80 μm to 500 μm, in particular from 100 μm to 400 μm.

In particular, the microcapsules comprise at least:

An inner core consisting of a monosaccharide-polyol, preferably mannitol,

At least two layers of different colors,

At least one hydrophilic polymer, preferably selected from polysaccharides or derivatives, more preferably starch or derivatives, and

Advantageously phosphoacylglycerols, such as at least one lipid-based substance, preferably an amphiphilic compound, more preferably a phospholipid, even more preferably a hydrogenated lecithin.

Preferably, the microcapsules containing releasable colorant (s) are multilayer microcapsules containing releasable colorant (s), including:

An uncolored core consisting of one organic material, and

A multilayer coating surrounding the core, comprising at least one organic inner layer and one organic outer layer of different color, each trapping at least one colorant.

According to one embodiment, each layer of the microcapsules contains one or more specific colorants or specific blends of colorant (s).

According to another embodiment, the outer layer of the microcapsules contains one or more specific colorants or specific blends of colorant (s).

In particular, the colorant is a pigment, preferably selected from the group consisting of metal oxides.

According to one embodiment, one layer of the microcapsules contains only titanium dioxide (TiO ₂ ) as colorant.

The composition may comprise from 0.1% to 20% by weight, preferably from 0.5% to 15% by weight, in particular from 2% to 10% by weight of microcapsules relative to the weight of the composition.

The invention also relates to a cosmetic process for the care and / or makeup of keratin materials, comprising applying the composition according to the invention onto said keratin materials, in particular on the skin.

Advantageously the microcapsules are deformable in the presence of said aqueous phase comprising water and one or more compounds selected from polyols, glycols and C ₂ -C ₈ monoalcohols, and mixtures thereof.

Advantageously the microcapsules inside the composition are breakable under pressure when applied onto the keratin materials.

The term "physiologically acceptable medium" is intended to mean a medium which is particularly suitable for applying the products of the invention to keratin materials, in particular skin, more particularly facial skin.

Said "physiologically acceptable medium" includes the aqueous phase used according to the invention.

For the purposes of the present invention, the term "keratin material" is intended to include the skin, mucous membranes such as lips, nails and eyelashes. The skin and lips, in particular facial skin, are most particularly contemplated in the present invention.

As can be seen from the examples below, the compositions according to the invention have proven advantageous in several respects.

Encapsulation of the colorant prevents undesirable re-agglomeration of the pigment during the preparation and long term storage of the cosmetic composition.

Because the microcapsules of the present invention have the ability to swell or soften upon contact with an aqueous phase as defined below, they are advantageously deformable when applied onto keratin materials, resulting in a soft feel to the user. Furthermore, its small size contributes to the application not to produce any uncomfortable or undesirable grainy feeling.

However, the microcapsules of the present invention are soft enough to rupture when rubbed or pressed very lightly on the skin to release their contents, but nevertheless, during the manufacture, even industrial process, and storage of the color change composition. It is durable enough to prevent collapse of the coating.

In addition, the microcapsules of the present invention allow the use of conventional equipment for the preparation of the compositions of the present invention, since no coloring of the equipment occurs during the manufacturing process.

Accordingly, the microcapsules of the present invention can mask the original color of the encapsulating colorant, increase the stability of such colorant against degradation, and prevent undesirable release of the encapsulating colorant into the composition during the manufacturing process and long term storage. In particular, it is of interest.

Finally, the compositions of the present invention also have the advantage of meeting consumer expectations in terms of cosmetic products.

In another aspect, the subject matter also relates to a cosmetic method comprising at least a step comprising applying at least a portion of the composition according to the invention onto a surface of a keratin material, in particular the skin.

In the present invention, "color changing composition" means a composition in which the color before application is different from the color after application, and this difference is visible to the naked eye.

In particular, such color changing compositions may be related to the color-difference ΔE of the CIE Lab system 1976 (ΔE before / after application) values.

ΔE is defined by the following equation:

(Wherein L ₁ , a ₁ , b ₁ are variables in the colorimetric space of the first color (pre-coating composition), and L ₂ , a ₂ , b ₂ are the second color (on the keratin materials) Of the composition after application and homogenization).

This value can be measured using a spectrophotometer or Chromamasphere (for the composition applied on the skin).

The color change composition according to the invention may be characterized as having ΔE greater than 1, in particular at least 2, preferably at least 3, before application.

Coloring microcapsules

As used herein, the term "microcapsules" refers to spherical microcapsules that contain one or more laminated coatings that capture one or more colorants and surround a core that is chemically different from the coating. Microcapsules are distinct from microspheres, which consist of a spherical homogeneous matrix.

In the present invention, "at least one lamination coating" is a multilayer coating, preferably an organic multilayer coating.

The term "multilayer microcapsules" means microcapsules consisting of a core surrounded by a coating based on one or more inner layer (s) and one outer layer. One or more inner layer (s) forming a multilayer coating of multilayer microcapsules and a single outer layer of the microcapsules may be composed of the same or different wall-forming organic compound (s).

Microcapsules according to the invention comprise a so-called "inner core" surrounded by a coating based on one or more layer (s). In a preferred embodiment, the microcapsules are 'multilayer' microcapsules comprising at least one inner layer and one outer layer. One or more inner layer (s) forming the multilayer coating of the multilayer microcapsules and a single outer layer of the microcapsules may be composed of the same or different wall-forming organic compound (s).

In a particular embodiment, the inner layer and outer layer are composed of the same wall forming organic compound and the core is surrounded by one coating layer.

In one embodiment, the outer layer does not contain any colorant. In another embodiment, the outer layer includes one or more colorants.

The term "wall-forming organic compound" means an organic compound or a combination of two or more different organic compounds as defined herein, which constitutes the component of the layer (s) of the microcapsules. In a preferred embodiment, the 'wall-forming organic compound' comprises one or more polymers.

The term "colorant" means an organic pigment, such as a synthetic or natural dye selected from any of the well-known FD & C or D & C dyes, inorganic pigments such as metal oxides, or lakes and any combination thereof (combination) do. Thus, colorants useful according to the present invention may be oil-soluble or oil-dispersible, or have limited solubility in water.

In a preferred embodiment, the colorant is an inorganic pigment, more preferably a metal oxide.

In general, colorant microcapsules having an average particle size of up to about 800 μm in diameter are used according to the invention. Preferably, the average particle size is less than about 400 μm in diameter of the colorant microcapsules for skin care application. Advantageously, said average particle size is in the range of about 10 μm to 350 μm in diameter. Preferably, the average particle size may be between 50 μm and 800 μm in diameter, in particular between 60 μm and 600 μm, in particular between 80 μm and 500 μm, in particular between 100 μm and 400 μm.

In particular, the average particle size is 50 to 1000 Mesh (about 400 μm to 10 μm), in particular 60 to 200 Mesh (about 250 μm to 75 μm), as measured by a sieving test or microscopically observed. Can be.

Preferably, the composition according to the invention may comprise from 0.1% to 20% by weight and preferably from 0.5% to 15% by weight of microcapsules relative to the total weight of the composition.

Particularly in the skin care composition according to the invention, the amount of microcapsules may range from 0.1% to 5% by weight, preferably from 0.2% to 3% by weight relative to the total weight of the composition.

Particularly in the makeup composition according to the invention, the amount of microcapsules is 0.5% to 20% by weight, preferably 1% to 15% by weight, more preferably 2% to 10% by weight, based on the total weight of the composition. It may be in the range of.

In certain embodiments, the encapsulating colorant (s) is from 0.5% to 20% by weight, in particular from 1% to 15% by weight and more particularly from 2% by weight of the total weight of the composition according to the invention. It may be present in the active material of the encapsulating pigment in an amount in the range of 12% by weight.

The microcapsules can be incorporated into the cosmetic formulation, generally at the end of the formulation and after the filtration step, if present, to prevent the microcapsules from breaking. Preferably, the microcapsules according to the invention are added and homogeneously mixed at temperatures below 50 ° C. They are mixed gently using paddles rather than homogenizers.

The microcapsules can be prepared by several methods known to those skilled in the art of coating or encapsulation, including pelleting, granulating, coating, and the like. For example, the microcapsules include mixing and drying compounds (active agents, pigments, polymers, solvents) to form capsules as disclosed in WO01 / 35933 and WO2011 / 027960, or spraying as disclosed in FR2841155. It can be obtained by methods including granulation and coating by drying, or by fluid bed techniques that have been used in the food and pharmaceutical industries for a long time to coat and encapsulate ingredients. As an example, WO2008 / 139053 may be mentioned, which relates to the preparation of ellipsoid multilayer capsules comprising the concentric layers of the core of the sugar and the pharmaceutical active. After fixation on the core of the pharmaceutical active is achieved by impregnation, pulverization or projection, the first layer is dried before application of the second layer.

Fluidized bed processes are described, for example, in Teunou et al. (Fluid-Bed Coating, Poncelet, 2005, D. Food Science and Technology (Boca Raton, FL, United States) , Volume 146 Issue Encapsulated and Powdered Foods, Pages 197-212). A specific feature of the fluidized bed process is that the core leads to coated particles that are well encapsulated, as compared to spray drying which leads to a random dispersion of the matrix with the core material in the polymer.

In a preferred embodiment, the microcapsules are obtained by fluid bed process.

In this embodiment, at least one layer of the microcapsules is obtained by fluid bed process.

In certain embodiments, the outer layer is obtained by fluid bed process.

In another particular embodiment, the one or more inner layers are obtained by fluid process.

Most preferably all layers are obtained by fluid bed process.

A person skilled in the art knows how to adjust the amount of air, the amount of liquid and the temperature which enables the reproduction of the capsule according to the invention.

Preferably, the fluidized bed process implemented according to the present invention includes a Wurster process and / or a tangential spraying process. Such a process enables the production of spherical capsules having a core surrounded by one or more circumferential layers, in contrast to the pelletization process.

When the whole process of manufacturing the layer surrounding the core of the microcapsules according to the invention is carried out by a fluidized bed process, the microcapsule layer is advantageously regular, concentric and of uniform thickness.

Different preparations of the capsules according to the invention will be presented later in this specification.

I. a) Core

The core consists of at least an organic material. The size of the core is preferably in the range of 500 nm to 150 μm in diameter.

Preferably, the core is in solid and / or crystalline form at room temperature.

In certain embodiments, the organic material is selected from organic materials having high water solubility. Preferably, the core is water soluble or water dispersible.

In certain embodiments, the core is uncolored, ie it contains no colorant material.

In certain embodiments, the core is based on only one compound. Such compounds are organic and more preferably natural compounds.

In a preferred embodiment, the core is a sugar-alcohol, preferably a monosaccharide-polyol, advantageously a monosaccharide-polyol selected from mannitol, erythritol, xylitol, sorbitol.

In certain embodiments, the core consists of mannitol and more preferably exclusively mannitol.

In an alternative embodiment, the core contains a polymer selected from at least mannitol and one or more additional components, preferably hydrophilic polymers. In particular, such cores may comprise mannitol and hydrophilic polymers selected from cellulose polymers, starch polymers and mixtures thereof, preferably mixtures thereof.

In a preferred embodiment, the cellulose polymer is carboxymethylcellulose and the starch polymer is unmodified natural starch, for example corn starch.

The core may consist of a seed (or crystal) of one of the materials.

The core is preferably from 1% to 50% by weight, preferably from 4% to 40% by weight, in particular from 5% to 30% by weight and in particular from 10% to 20% by weight relative to the total weight of the microcapsules. It is contained in amounts.

The mannitol is preferably contained in an amount of 2% to 100% by weight, preferably 5% to 100% by weight, in particular 100% by weight, relative to the total weight of the core.

The mannitol is preferably from 1% to 50% by weight, preferably from 4% to 40% by weight, in particular from 5% to 30% by weight, in particular from 10% to 20% by weight relative to the total weight of the microcapsules. It is contained in amounts.

I. b) outer layer (s) or coating

As disclosed above, the core is advantageously surrounded by a coating or outer layer (s), preferably comprising one or more inner layers and one outer layer. In the latter case, these layers preferably extend concentrically with respect to the core.

The layer (s) are preferably organic, ie contain at least one organic compound as a wall-forming material. Preferably, said inner and / or outer layer (s) comprise at least one polymer, in particular a hydrophilic polymer.

Polymer (s)

The composition according to the invention comprises one or more polymer (s). In certain embodiments, the polymer (s) are hydrophilic polymer (s).

Such hydrophilic polymer (s) are soluble or dispersible in water or in particular alcohol compounds selected from lower alcohols, glycols, polyols.

For the purposes of the present patent application, the term "hydrophilic polymer" means a (co) polymer capable of forming hydrogen bond (s) with water or an alcohol compound selected from lower alcohols, glycols, polyols in particular. In particular, it is contemplated that the polymer can form O-H, N-H and S-H bonds.

In certain embodiments of the invention, the hydrophilic polymer may swell or soften upon contact with water or in particular an alcohol compound selected from lower alcohols, glycols, polyols.

The hydrophilic polymer (s) can be selected from the following polymer (s):

Acrylic or methacrylic acid homopolymers or copolymers or salts and esters thereof, in particular the products sold under the name Versicol F or Versicol K by the company Allied Colloid, by Ultrahold 8 by the company Ciba-Geigy, and the Synthalen K type. Polyacrylic acids and salts of polyacrylic acids, in particular sodium salts (corresponding to the INCI name sodium acrylate copolymer), more particularly crosslinked sodium polyacrylates (INCI name sodium acrylate copolymer (and) caprylic / capric triglycerides) (Available under the name Luvigel EM);

Copolymers of acrylic acid and acrylamide (commercially available under the name Reten from Hercules in the form of its sodium salt), sodium polymethacrylate (commercially available under the name Darvan No. 7 from Vanderbilt), and polyhydroxycarboxylic acids Sodium salt of (marketed under the name Hydagen F by the company Henkel);

Polyacrylic acid / alkyl acrylate copolymers, preferably modified or unmodified carboxyvinyl polymers; Most particularly preferred copolymers according to the invention are acrylate / C ₁₀ -C ₃₀ -alkylacrylate copolymers (INCI name: acrylates / C _10-30 alkyl acrylate crosspolymers), such as the trade names Pemulen TR1, from the company Lubrizol, A product sold as Pemulen TR2, Carbopol 1382 and Carbopol ETD 2020, and even more preferably Pemulen TR-2;

Alkylacryl / alkylmethacrylic acid copolymers and derivatives thereof, in particular their salts and esters thereof such as ethyl acrylate, methyl methacrylate and copolymers of low content methacrylic acid esters with quaternary ammonium groups (by Evonik Degussa). Sold under the trade name EUDRAGIT RSPO in the US;

AMPS (polyacrylamidomethylpropanesulfonic acid partially neutralized with aqueous ammonia, commercially available from Clariant);

AMPS / acrylamide copolymers, such as products sold by SEIGIC as Sepigel or Simulgel, in particular copolymers of INCI name polyacrylamide (and) C13-14 isoparaffin (and) laureth-7;

Polyoxyethylenated AMPS / alkyl methacrylate copolymers (cross-linked or non-cross-linked), such as those marketed as Aristoflex HMS by the company Clariant;

Polysaccharides and derivatives such as:

Anionic, cationic, amphoteric or nonionic chitin or chitosan polymers;

Cellulose polymers and derivatives, preferably those selected from hydroxyethyl cellulose, hydroxypropyl cellulose, hydroxymethyl cellulose, ethyl hydroxyethyl cellulose and carboxymethyl cellulose, in addition to alkyl cellulose, and also quaternized cellulose derivatives; In a preferred embodiment, the cellulose polymer is carboxymethylcellulose;

-Finally modified starch polymers and derivatives; In a preferred embodiment, the starch polymer is natural starch;

Optionally modified polymers of natural origin such as galactomannan and derivatives thereof such as konjac gum, gellan gum, locust bean gum, feugreek gum, karaya gum, tragaganth gum, arabic gum, acacia Gum, guar gum, hydroxypropyl guar, hydroxypropyl guar (Jaguar XC97-1, Rhodia) modified with sodium methylcarboxylate group, hydroxypropyltrimethylammonium guar chloride, and xanthan derivatives;

Alginate and carrageenan;

Glycoaminoglycans, hyaluronic acid and derivatives thereof;

Mucopolysaccharides such as hyaluronic acid and chondroitin sulfate, and mixtures thereof;

Vinyl polymers such as polyvinylpyrrolidone, copolymers of methyl vinyl ether and maleic anhydride, copolymers of vinyl acetate and crotonic acid, copolymers of vinylpyrrolidone and vinyl acetate; Copolymers of vinylpyrrolidone and caprolactam; Polyvinyl alcohol;

And mixtures thereof.

Preferably, the composition according to the invention, in particular the outer layer (s), comprises a hydrophilic polymer selected from the group consisting of polysaccharides and derivatives, acrylic or methacrylic acid homopolymers or copolymers or salts and esters thereof, and mixtures thereof. Include.

The polymer (s) are advantageously (poly) (alkyl) (meth) acrylic acid and derivatives, in particular (poly) (alkyl) (meth) acrylate and derivatives, preferably alkylacryl / alkylmethacrylic acid copolymers and Copolymers of ethyl acrylate, methyl methacrylate and low content methacrylic esters with quaternary ammonium groups (commercially available under the trade name EUDRAGIT RSPO from Evonik Degussa).

The polysaccharides and derivatives are preferably selected from chitosan polymers, chitin polymers, cellulose polymers, starch polymers, galactomannans, alginates, carrageenans, mucopolysaccharides, and derivatives thereof, and mixtures thereof.

In a preferred embodiment, the outer layer (s) do not comprise microcrystalline cellulose.

In a particularly preferred embodiment, the polysaccharides and derivatives thereof are preferably at least D- as one type of sugar or several types of sugar (s), preferably several types of sugars, in particular sugar (s). Those comprising glucose unit (s), preferably starch polymers, cellulose polymers, and derivatives, and mixtures thereof.

In a preferred embodiment, the microcapsules are mono- and / or copolymers of starch and derivatives thereof, in particular corn starch, cellulose and derivatives thereof, methacrylic acid and / or methacrylic acid esters or (alkyl) acrylic acid and / or One or more hydrophilic polymers selected from the group consisting of copolymers of (alkyl) methacrylic acid and derivatives thereof, preferably salts and esters thereof, in particular the capsules contain polymethyl methacrylate.

Starches usable in accordance with the present invention are typically derived from vegetable raw materials such as rice, soybeans, potatoes or corn. The starch may be unmodified or modified (similar to cellulose) starch. In a preferred embodiment, the starch is unmodified.

Preferred mono- and / or copolymers of methacrylic acid and / or methacrylic acid esters are those in which the copolymer of methyl methacrylate and ethyl acrylate has a molecular weight of 750 to 850 kDa.

Cellulose derivatives include, for example, alkali cellulose carboxymethyl cellulose (CMC), cellulose esters and ethers, and aminocelluloses. In certain embodiments, the cellulose is carboxymethyl cellulose (CMC).

In a preferred embodiment, the capsule is at least a starch derivative, in particular a copolymer of corn starch, polymethyl methacrylate, (alkyl) acrylic acid and / or (alkyl) methacrylic acid and derivatives thereof, preferably salts thereof and their Esters, and / or cellulose derivatives.

Preferably, the microcapsules contain uncrosslinked polymer (s).

The polymer (s) may be present in one or several layer (s).

In another embodiment, the polymer (s) may be present in the core.

The microcapsules may contain polymer (s) in the core and / or layer (s).

In certain embodiments, the polymer (s) are present in the core and layer (s).

In one embodiment, the core contains at least starch and / or cellulose derivatives as polymer (s). When the starch is contained in the core, it represents the main component of such a core, ie the weight of the starch is greater than the respective amounts of the other compounds of the core.

The polymer may correspond to 0.5 to 20% by weight of the microcapsules, in particular 1 to 10% by weight of the microcapsules, preferably 2 to 8% by weight.

Different layers forming the coating may be based on the same or different polymers. Advantageously, it may consist of the same polymer.

In contrast, the layers can advantageously be colored differently.

Such different colors can be obtained using different colorants, but can also be obtained using one or more colorants in different concentrations if the colorants are the same for the two layers.

In certain embodiments, the outer layer contains one or more colorants.

In another embodiment, the outer layer does not contain any colorant.

Colorant (s)

As mentioned above, "colorants" include any organic or inorganic pigment or colorant used in cosmetic formulations, approved for use in cosmetics by the CTFA and FDA.

Thus, the term "colorant" refers to synthetic or natural dyes selected from organic pigments such as any well-known FD & C or D & C dyes, inorganic pigments such as metal oxides, or lakes such as cochinyl carmine, barium, strontium, calcium or Aluminum based ones and any combination thereof. Such colorants are detailed below.

In certain embodiments, the colorant may be water soluble or water dispersible.

In another embodiment, colorants useful according to the present invention may be oil-soluble or oil-dispersible or may have limited solubility in water.

In a preferred embodiment, the colorant is an inorganic pigment, more preferably a metal oxide.

Advantageously, the colorant of the multilayer microcapsules is a primary metal oxide, or a composite oxide, more preferably selected from iron oxide, titanium dioxide, aluminum oxide, zirconium oxide, cobalt oxide, cerium oxide, nickel oxide, tin oxide or zinc oxide. Preferably iron oxide selected from red iron oxide, yellow iron oxide or black iron oxide, or mixtures thereof.

The layer (s) may also contain a rake corresponding to an organic colorant immobilized on a substrate. Such lake (s) is advantageously selected from the following materials, and mixture (s) thereof:

Carmine of cochineal;

Organic pigments of azo, anthraquinone, indigoid, xanthene, pyrene, quinoline, triphenylmethane and fluorane colorants; Among the organic pigments, those known under the following trade names may be mentioned: D & C Blue n ° 4, D & C Brown n ° 1, D & C Green n ° 5, D & C Green n ° 6, D & C Orange n ° 4, D & C Orange n ° 5, D & C Orange n ° 10, D & C Orange n ° 11, D & C Red n ° 6, D & C Red n ° 7, D & C Red n ° 17, D & C Red n ° 21, D & C Red n ° 21, D & C Red n ° 27, D & C Red n ° 28, D & C Red n ° 30, D & C Red n ° 31, D & C Red n ° 33, D & C Red n ° 34, D & C Red n ° 36, D & C Violet n ° 2, D & C Yellow n ° 7, D & C Yellow n ° 8, D & C Yellow n ° 10, D & C Yellow n ° 11, FD & C Blue n ° 1, FD & C Green n ° 3, FD & C Red n ° 40, FD & C Yellow n ° 5, FD & C Yellow n ° 6;

-Sodium, potassium, calcium, barium, aluminum, zirconium, strontium, titanium in acid colorants such as azo, anthraquinone, indigoid, xanthene, pyrene, quinoline, triphenylmethane and fluorane Water-insoluble salt of, the colorant may include one or more carboxylic acid or sulfonic acid groups.

The organic lake can also be protected by an organic support such as rosin or aluminum benzoate.

Among the organic lakes, mention may be made in particular of those known under the following trade names: D & C Red n ° 2 Aluminum lake, D & C Red n ° 3 Aluminum lake, D & C Red n ° 4 Aluminum lake, D & C Red n ° 6 Aluminum lake, D & C Red n ° 6 Barium lake, D & C Red n ° 6 Barium / Strontium lake, D & C Red n ° 6 Strontium lake, D & C Red n ° 6 Potassium lake, D & C Red n ° 6 Sodium lake, D & C Red n ° 7 Aluminum lake, D & C Red n ° 7 Barium lake, D & C Red n ° 7 Calcium lake, D & C Red n ° 7 Calcium / Strontium lake, D & C Red n ° 7 Zirconium lake, D & C Red n ° 8 Sodium lake, D & C Red n ° 9 Aluminum lake, D & C Red n ° 9 Barium lake, D & C Red n ° 9 Barium / Strontium lake, D & C Red n ° 9 Zirconium lake, D & C Red n ° 10 Sodium lake, D & C Red n ° 19 Aluminum lake, D & C Red n ° 19 Barium lake, D & C Red n ° 19 Zirconium lake, D & C Red n ° 21 Aluminum lake, D & C Red n ° 21 Zirconium lake, D & C Red n ° 22 Aluminum lake, D & C Red n ° 27 Aluminum lake, D & C Red n ° 27 Aluminum / Titanium / Zirconium lake , D & C Red n ° 27 Barium lake, D & C Red n ° 27 Calcium lake, D & C Red n 27 Zirconium lake, D & C Red n ° 28 Aluminum lake, D & C Red n ° 28 Sodium lake, D & C Red n ° 30 lake, D & C Red n ° 31 Calcium lake, D & C Red n ° 33 Aluminum lake, D & C Red n ° 34 Calcium lake , D & C Red n ° 36 lake, D & C Red n ° 40 Aluminum lake, D & C Blue n ° 1 Aluminum lake, D & C Green n ° 3 Aluminum lake, D & C Orange n ° 4 Aluminum lake, D & C Orange n ° 5 Aluminum lake, D & C Orange n ° 5 Zirconium lake, D & C Orange n ° 10 Aluminum lake, D & C Orange n ° 17 Barium lake, D & C Yellow n ° 5 Aluminum lake, D & C Yellow n ° 5 Zirconium lake, D & C Yellow n ° 6 Aluminum lake, D & C Yellow n ° 7 Zirconium lake, D & C Yellow n ° 10 Aluminum lake, FD & C Blue n ° 1 Aluminum lake, FD & C Red n ° 4 Aluminum lake, FD & C Red n ° 40 Aluminum lake, FD & C Yellow n ° 5 Aluminum lake, FD & C Yellow n ° 6 Aluminum lake.

Chemicals corresponding to each of these organic colorants cited above are mentioned in the International Cosmetic Ingredient Dictionnary and Handbook Edition 1997, pages 371-386 & 524-528, published by The Cosmetic, Toiletry, and Fragrance Association. The contents are incorporated herein by reference.

In a preferred embodiment, the lake (s) is acid such as carmine and azo-based, anthraquinone-based, indigoide-based, xanthene-based, pyrene-based, quinoline-based, triphenylmethane-based, fluorane-based colorants of cochineal. It is suggested that the colorants are selected from water insoluble salts of sodium, potassium, calcium, barium, aluminum, zirconium, strontium, titanium, and such colorants may include one or more carboxylic acid or sulfonic acid groups, and mixtures thereof.

In a preferred embodiment, the lake (s) is selected from water insoluble salts of carmine and sodium, calcium, aluminum, and mixtures of cochinyl.

As lakes containing carmine, mention may be made of the following commercially available: CARMIN COVALAC W 3508, CLOISONNE RED 424C and CHROMA-LITE MAGENTA CL4505.

The water insoluble aluminum salt is preferably FDC Yellow N ° 5 aluminuim lake, FDC Blue N ° 1 aluminuim lake, FDC Red N ° 40 aluminuim lake, FDC Red N ° 30 aluminuim lake, FDC Green N ° 5 aluminuim lake, and Mixtures thereof. As the compounds containing such inorganic lakes, mention may be made in particular of the following commercially available products: INTENZA FIREFLY C91-1211, INTENZA AZURE ALLURE C91-1251, INTENZA THINK PINK C91-1236.

The water insoluble calcium salt is preferably selected from Red N ° 7 calcium lake. As the compounds containing such inorganic lakes, mention may be made in particular of the following commercially available products: INTENZA MAGENTITUDE C91-1234, INTENZA HAUTE PINK C91-1232, INTENZA RAZZLED ROSE C91-1231, INTENZA AMETHYST FORCE C91-7231, INTENZA PLUSH PLUM C91-7441, INTENZA ELECTRIC CORAL C91-1233, FLORASOMES-JOJOBA-SMS-10% CELLINI RED-NATURAL and mixtures thereof.

The water insoluble sodium salt is preferably selected from Red N ° 6 sodium lake and Red N ° 28 sodium lake, and mixtures thereof. As compounds containing such inorganic lakes, mention may be made in particular of the following commercially available products: INTENZA MANGO TANGO C91-1221 and INTENZA NITRO PINK C91-1235.

In a preferred embodiment, the colorant is an inorganic colorant.

In a preferred embodiment, the colorant is a metal oxide. Such metal oxides are preferably selected from iron oxides, titanium dioxide, and mixtures thereof.

The color change composition of the present invention may comprise a mixture of two or more colorants individually encapsulated in microcapsules and / or a combination of one or more colorants encapsulated within a multilayer microcapsule.

In this particular embodiment, each layer of the microcapsules may contain one or more specific colorants or specific combinations of colorant (s).

In this particular embodiment, the color changing composition of the present invention comprises two or more microcapsules of the present invention having different colors.

One skilled in the art knows how to select colorants and combinations of colorants to produce the desired color effect or color change.

As mentioned above, the microcapsules of the invention preferably contain at least titanium dioxide and / or iron oxide, preferably at least titanium dioxide in their coating.

In a preferred embodiment, the microcapsules of the invention preferably contain at least titanium dioxide and iron oxide in their coating.

In certain embodiments, the outer layer of the microcapsules more preferably contains titanium dioxide as the only colorant.

In this particular embodiment, the outer layer of the microcapsules contains titanium dioxide as the sole colorant and the composition according to the invention is not colored, wherein the "uncolored" or "non-colored" composition is By transparent or white composition is meant.

In a preferred embodiment, the composition according to the invention comprises uncolored microcapsules, ie the outer layer is white or transparent, and when the outer layer is transparent, the visible inner layer is white.

For the purposes of the present invention, the term “transparent composition” refers to a composition that transmits at least 40% of light without scattering at a wavelength of 750 nm, ie, a composition having a scattering angle of light of less than 5 °, more preferably about 0 °. it means.

The transparent composition can transmit at least 50%, in particular at least 60%, in particular at least 70% of light at a wavelength of 750 nm.

The transmittance measurement is carried out using a Cary 300 Scan UV-visible sprectrophotometer from Varian, according to the following protocol:

The composition is poured into a square-side spectrophotometer cuvette 10 mm in length;

A sample of the composition is held at 20 ° C. for 24 hours in a thermostatic chamber;

The light transmitted through the sample of the composition is measured by scanning with a spectrophotometer a wavelength in the range of 700 nm to 800 nm (the measurement is in transmittance mode);

The percentage of light transmitted through the sample of the composition at a wavelength of 750 nm is measured.

The line can be seen when the transparent composition is placed in front of 0.01 m of a black line 2 mm thick drawn on a piece of white paper; In contrast, in the case of an opaque composition, ie a composition that is not transparent, the line is not visible.

In certain embodiments, the outer layer of the microcapsules contains an organic pigment or iron oxide.

The colorant is present in an amount ranging from 20% to 90% by weight, preferably from 30% to 80% by weight, more preferably from 50% to 75% by weight relative to the total weight of the microcapsules.

In certain embodiments, the microcapsules are present in an amount in the range of 20% to 90% by weight, preferably 30% to 85% by weight, more preferably 50% to 85% by weight relative to the total weight of the microcapsules. Present, metal oxides selected from iron oxide, titanium dioxide, and mixtures thereof.

In particular, the titanium dioxide may be present in an amount of 28% to 80% by weight, preferably 30% to 75% by weight, and more preferably 30% to 50% by weight relative to the total weight of the microcapsules.

In particular, the iron oxide may be present in 5% to 75% by weight, preferably 8% to 65% by weight relative to the total weight of the microcapsules. In certain embodiments, the iron oxide is present in an amount of greater than 15 wt%, preferably greater than 30 wt%, especially 40 wt% to 65 wt%, relative to the total weight of the microcapsules.

In a preferred embodiment, in at least one layer, and preferably in all layers, the colorant is the main component, ie it is at least 40% by weight of the layer (s), preferably at least 75% by weight of the layer (s). Or more preferably more than 95% by weight of the layer (s).

In a preferred embodiment, the average thickness of the titanium dioxide layer is in the range of 5 μm to 150 μm.

Geological material

The inner and / or outer layer (s) may also advantageously comprise one or more lipid based materials.

In certain embodiments of the invention, such lipid-based materials may have amphiphilic properties, ie, have a nonpolar portion and a polar portion.

Such lipid-based materials may include one or more or several C ₁₂ -C ₂₂ fatty acid chain (s) such as those selected from stearic acid, palmitic acid, oleic acid, linoleic acid, linolenic acid, and the like, and mixtures thereof. Preferably, these fatty acid chains are hydrogenated. In turn, these fatty acid chains can become nonpolar parts of lipid-based materials.

Such lipid-based materials are preferably selected from phospholipids. Such phospholipids are preferably selected from phosphoacylglycerols, more preferably lecithin, in particular hydrogenated lecithin.

The lipid-based material may correspond to 0.05 to 5% by weight of the microcapsules, in particular 0.1 to 1% by weight of the microcapsules.

Colorant-encapsulated microcapsules can be prepared by combining three or more compounds (eg: sugar alcohols, polymers, lipid-based substances) in different hardness and / or water-soluble microcapsules to alter the method or intensity of application on the skin. Since the time required to decompose the phase can be adjusted, the desired coloring or gradation pattern can be adjusted.

Thus, in a preferred embodiment, the multilayer coating contains at least starch and at least one lipid based material, preferably lecithin, as a polymer.

In an advantageous embodiment, the microcapsules according to the invention comprise at least one monosaccharide or derivative thereof and at least one polysaccharide or derivative thereof.

In a preferred embodiment, the microcapsules contain a core comprising a monosaccharide derivative and a polysaccharide (or derivative thereof) comprising one type of sugar or several types of sugar (s), preferably several types of sugars. Including coatings are included.

In a more preferred embodiment, the microcapsules preferably comprise a core comprising a monosaccharide polyol selected from mannitol, erythritol, xylitol, sorbitol, and at least one D-glucose unit (s) as sugar (s). Coatings comprising polysaccharides (or derivatives thereof).

In a preferred embodiment, the microcapsules include three or more colorants in different layers.

In a preferred embodiment, the microcapsules additionally comprise a phospholipid, advantageously a lipid based material selected from phosphoacylglycerols, in particular lecithin.

In certain embodiments, the core contains mannitol, starch polymers and cellulose derivatives and optionally lipid based materials. In such cases, the starch polymer is the main component, ie the weight of starch is greater than the respective amounts of mannitol, cellulose derivatives and lipid-based materials of the core.

Referring to FIG. 1, in a preferred embodiment, the present invention provides color changing microcapsules having a size ranging from 50 μm to 800 μm, preferably 60 μm to 500 μm, advantageously including :

i) As core (A), preferably having a size in the range from 500 nm to 150 μm in diameter, preferably free of any colorants, preferably at least one sugar alcohol, advantageously mannitol, erythritol, xylitol A core (A) comprising at least one organic core selected from monosaccharide-polyols selected from sorbitol, and mixtures thereof;

ii) at least one colorant, preferably iron oxide (s), and

A binder selected from at least one polymer, at least one lipid-based material, and mixtures thereof, preferably mixtures thereof

A first layer (B) surrounding the core;

iii)-titanium dioxide particles, and

A binder selected from at least one polymer, at least one lipid-based material, and mixtures thereof, preferably mixtures thereof

One second layer (C) surrounding said first layer (B), preferably having a thickness of between 5 μm and 500 μm;

iv) optionally,

At least one colorant, and

A binder selected from at least one polymer, at least one lipid-based material, and mixtures thereof, preferably mixtures thereof

One third layer (D) surrounding said second layer (C);

v) optionally, preferably cellulose derivatives, especially cellulose ethers and cellulose esters, (poly) (alkyl) (meth) acrylic acids and derivatives, especially (poly) (alkyl) (meth) acrylates and derivatives, and preferably alkyl Surrounding or, if present, said second layer (C) comprising at least one wall-forming polymer selected from polysaccharides such as acrylic acid / alkylmethacrylic acid copolymers and derivatives thereof One fourth layer enclosing (E).

As examples of commercially available microcapsules used in the compositions of the present invention, mention may be made of the following microcapsules made by the following trade names from Korea Particle Technology KPT:

Magic 60-WP0105 from KPT: contains titanium dioxide, mannitol, hydrogenated lecithin, synthetic fluoroflogoite, red 30 lake, starch may (corn) starch, tin oxide, 60- Pink spherical microcapsules with 200 Mesh particle size;

Magic 50-BW0105 from KPT: gray white spherical microcapsules containing mannitol, red iron oxide, yellow iron oxide, black iron oxide, hydrogenated lecithin, titanium dioxide, corn starch and having a particle size of 60-200 Mesh.

Microcapsules suitable for the invention are 1 month, preferably 2 months and more preferably in an oven according to the invention, preferably at an elevated temperature, for example at 40 ° C. or higher, for example at 45 ° C. Stable for 3 months or in an oven at 60 ° C. for 15 days.

In a preferred embodiment, the microcapsules according to the invention exhibit a suitable softening kinetics.

Preferably, at least 3 hours after contact with other compounds of the formulation, the hardness of the microcapsules is advantageously from 5 to 50 grams, more preferably from 6 to 20 grams and even more preferably from 7 to 10 grams. Such hardness conforms to industrial processes for the preparation of cosmetic compositions comprising such microcapsules.

Such softening reaction rate and hardness values make it possible to provide not only aesthetic microcapsules but also aesthetic compositions as a whole.

In particular, the composition may lead to different hue or color gradation depending on the rub strength. The composition can advantageously exhibit high chromaticity C * (measured in CIE Lab system 1976).

Aqueous phase

The microcapsules of the present invention are contacted with an aqueous phase comprising water and at least one compound selected from polyols, glycols, C ₂ -C ₈ monoalcohols, and mixtures thereof in order to soften upon application on keratin materials. Required. Such aqueous phases have the advantage of imparting and / or improving deformation in particular of the microcapsules of the invention.

Advantageously, this aqueous phase acts as an swelling agent or softener for it without destroying the microcapsules. The microcapsules are not inert when placed in such an aqueous phase, either they swell (the diameter increases significantly with the random softening of the microcapsules), or the microcapsules are softened significantly without an increase in the diameter, so that When applied to the ductility is more excellent, it is more easily broken.

The aqueous phase used in the composition according to the invention can act on the softening kinetics of the microcapsules and more particularly makes it possible to obtain a good balance between softening kinetics and hardness.

As a result, since the aqueous phase plays a role in the softening reaction rate of the microcapsules, the aqueous phase is particularly advantageous for softening the microcapsules suitable for the present invention in an appropriate manner.

The aqueous phase comprises water and, where appropriate, a water soluble solvent.

In the present invention, the term “water soluble solvent” means a compound which is liquid at room temperature and is water miscible (miscibility with more than 50% by weight of water at 25 ° C. and atmospheric pressure).

Water soluble solvents that may be used in the compositions of the present invention may also be volatile.

As mentioned, the compositions of the present invention contain an aqueous phase comprising water and at least one compound selected from polyols, glycols, C ₂ -C ₈ monoalcohols and mixtures thereof. It may also contain C ₄ ketones and C ₂ -C ₄ aldehydes.

The compositions of the present invention contain microcapsules as defined above and an aqueous phase comprising water and at least one compound selected from polyols, glycols, C ₂ -C ₈ monoalcohols and mixtures thereof. Preferably, the aqueous phase comprises water and one or more compounds selected from polyols, glycols and mixtures thereof.

The aqueous phase is preferably present in an amount of at least 3% by weight, preferably at least 5% by weight, more preferably at least 8% by weight and advantageously at least 10% by weight relative to the total weight of the composition.

Advantageously, the aqueous phase is present in an amount in the range of 30% to 99% by weight, preferably 40% to 95% by weight, more preferably 50% to 90% by weight relative to the total weight of the composition. Can be.

Advantageously, water is present in an amount of at least 30% by weight, preferably at least 40% by weight and more preferably at least 50% by weight relative to the total weight of the composition. Generally, water is present in an amount ranging from 30% to 90% by weight, preferably from 40% to 85% by weight and more preferably from 50% to 80% by weight relative to the total weight of the composition.

Advantageously, the aqueous phase preferably acts as a swelling agent or emollient against the microcapsules without causing or destroying the colorant leakage.

Compositions of the present invention generally comprise one or more compounds selected from polyols, glycols, C ₂ -C ₈ monoalcohols, and mixtures thereof, from 3% to 50% by weight, preferably 5% by weight relative to the total weight of the composition. % To 45% by weight and more preferably 10% to 45% by weight.

In a preferred embodiment, the aqueous phase suitable for the present invention comprises at least one C ₂ -C ₈ monoalcohol.

In another preferred embodiment, the aqueous phase suitable for the present invention comprises one or more polyols or glycols.

In another preferred embodiment, the aqueous phase suitable for the present invention comprises at least one C ₂ -C ₈ monoalcohol and at least one polyol or glycol.

Monoalcohol or lower alcohol

Monoalcohols or lower alcohols suitable for use in the present invention may be compounds of the linear, branched or cyclic, saturated or unsaturated alkyl type, having only one -OH function.

Advantageously, C ₂ -C ₈ monoalcohols are noncyclic monoalcohols, more preferably C ₂ -C ₅ monoalcohols and preferably C ₂ -C ₃ monoalcohols.

Lower monoalcohols which are advantageously suitable for the formulation of the compositions according to the invention are especially alcohols having 2 to 5 carbon atoms, such as ethanol, propanol, butanol, isopropanol, isobutanol, preferably ethanol and / or isopropanol and more preferably at least Ethanol.

The composition of the present invention is at least 1% by weight, preferably at least 2% by weight, more preferably from 2% by weight to 15% by weight, advantageously from 3% by weight to 10% by weight relative to the total weight of the composition. Preferably 3% to 8% by weight, preferably 4% to 6% by weight of monoalcohol (s).

In a preferred embodiment, the composition of the present invention comprises ethanol and / or isopropanol and more preferably at least ethanol at a total concentration of 2-15% by weight and more preferably 3-10% by weight relative to the total weight of the composition. Include.

Lower monoalcohols such as ethanol can be advantageously used in a number of ways in the field of makeup and / or care of keratin material (s).

Such compounds are useful for providing a refreshing feeling especially to the user when the user applies the composition of the present invention on the skin.

Furthermore, such a refreshing feeling that gives the user a comfort can also advantageously activate blood circulation in the skin, especially in the skin around the eye, which forms well-developed vascular areas. Thus, the refreshing feeling accompanied by the application of such lower monoalcohols reduces the puffiness and dark circles present in these parts of the face because of the high vascular distribution and thin thickness in that part of the face.

Application of lower monoalcohols can also advantageously avoid applying other coolants (generally eye irritant) such as menthol, ethyl mentane carboxamide, menthyl lactate, menthoxypropanediol around the eyes. .

In addition, because some cosmetic ingredients are particularly soluble in hydroalcoholic media, it is desirable to treat compositions containing color changing microcapsules in physiological media containing lower alcohols.

Furthermore, lower monoalcohols such as ethanol can dissolve the active agents, in particular keratinous agents such as for example salicylic acid and derivatives thereof.

Since some microcapsules of the prior art decompose rapidly in hydroalcoholic media, it has resulted in the need to treat stable compositions comprising color changing microcapsules in hydroalcoholic media.

Polyols and glycols

For the purposes of the present invention, the term "polyol" is to be understood as meaning any organic molecule comprising at least two free hydroxyl groups. The term "polyol" according to the invention does not include the monosaccharide-alcohols disclosed above.

Preferably, the polyols according to the invention are in liquid form at room temperature.

The polyol / glycol is a moisturizer or humectant.

This may exhibit an effect on the stability of the other components of the composition, especially when compared to the microcapsules of the prior art.

Therefore, because the composition exhibits a significant moisturizing or wetting effect, it is desired to treat stable compositions containing color changing microcapsules in physiological media comprising polyols and / or glycols.

This technical problem is solved by the composition according to the invention. Polyols suitable for use in the present invention are linear, branched or cyclic, saturated or unsaturated alkyls having at least two -OH functional groups, in particular at least three -OH functional groups, more particularly at least four -OH functional groups on each alkyl chain. Types of compounds.

Advantageously suitable polyols for the formulation of the compositions according to the invention are especially 2 to 32 carbon atoms, preferably 2 to 20 carbon atoms and more preferably 2 to 16 carbon atoms, advantageously 2 to 10 carbon atoms, more advantageously carbon atoms. 2 to 6 ones.

In another embodiment, polyols suitable for use in the present invention may advantageously be selected from polyethylene glycols.

In one embodiment, the composition of the present invention may comprise a mixture of polyols.

Advantageously, the polyol may be selected from polyhydric alcohols, preferably of C ₂ -C ₈ and more preferably of C ₃ -C ₆ . The polyols include glycerol, pentaerythritol, trimethylolpropane, ethylene glycol, propylene glycol, 1,3-butylene glycol, 1,3-propanediol, pentylene glycol, hexylene glycol, isoprene glycol, dipropylene glycol, dipropylene Ethylene glycol and diglycerol, and mixtures thereof, glycerol and derivatives thereof, polyglycerols such as glycerol oligomers (eg diglycerol), and polyethylene glycols, glycol ethers (particularly 3 to 16 carbon atoms) such as mono-, di- Or tripropylene glycol (C ₁ -C ₄ ) alkyl ether, mono-, di- or triethylene glycol (C ₁ -C ₄ ) alkyl ether, and mixtures thereof.

In particular, the polyol is glycerol, glycol, preferably propylene glycol, butylene glycol, pentylene glycol, hexylene glycol, dipropylene glycol, diethylene glycol, ethylhexylglycerine, caprylyl glycol, glycol ether, preferably Mono-, di- or tripropylene glycol of alkyl (C1-C4) ether or mono-, di- or triethylene glycol of alkyl (C ₁ -C ₄ ) ether, and mixtures thereof.

In one preferred embodiment of the invention, the polyol is selected from ethylene glycol, pentaerythritol, trimethylolpropane, propylene glycol, butylene glycol, glycerol, polyglycerol and polyethylene glycol, and mixtures thereof.

In certain embodiments, the polyol is selected from the group consisting of glycerol and glycols selected from propylene glycol, butylene glycol, ethylhexylglycerine, caprylyl glycol, and mixtures thereof.

In one particular embodiment, the composition of the present invention comprises at least butylene glycol, glycerol or mixtures thereof.

In a preferred embodiment, the composition comprises at least glycerol.

In one particular embodiment, the compositions of the present invention comprise glycerol as the sole polyol.

Advantageously, the composition may comprise 1 to 10, preferably 2 to 8% by weight of glycerol based on the total weight of the composition.

Advantageously, the composition may comprise from 1 to 10, preferably from 2 to 8% by weight of butylene glycol, based on the total weight of the composition.

Advantageously, the composition may comprise 1 to 10, preferably 2 to 8% by weight of propylene glycol, based on the total weight of the composition.

When the composition comprises glycerol and one or more glycols, the weight ratio of glycerol / glycol is advantageously 1/2 to 3/2, preferably 2/3 to 1/1, more preferably about 1.

In a preferred embodiment, the composition comprises glycerol and at least one glycol selected from propylene glycol, butylene glycol, ethylhexylglycerine, caprylyl glycol, wherein the weight ratio of glycerol / glycol is advantageously 1/2 to 3 / 2, preferably 2/3 to 1/1, more preferably about 1.

The composition according to the invention is advantageously at least 10% by weight, preferably 10% to 45% by weight, in particular 10% to 40% by weight of the polyol (s) and / or glycols, preferably based on the weight of the composition Preferably one C ₂ -C ₃₂ polyol and / or glycol.

The composition according to the invention is advantageously at least 10% by weight, preferably from 12% to 50% by weight, in particular from 13% to 40% by weight, more preferably from 14% to 35% by weight, based on the weight of the composition. %, More preferably 15% to 30% by weight of polyol (s) and / or glycols.

The composition according to the invention is advantageously at least 10% by weight, preferably 12% to 50% by weight, in particular 13% to 40% by weight, more preferably 14% to 35% by weight, based on the weight of the aqueous phase. %, More preferably 15% to 30% by weight of polyol (s) and / or glycols.

Preferably, the polyol is a C ₂ -C ₃₂ polyol and / or glycol.

Advantageously, the weight ratio of the polyol and glycol / composition is 1/10 to 1/2, preferably 1/8 to 1/3, more preferably 1/6 to 1/4. More particularly, the weight ratio of the polyol and glycol / aqueous phase is 1/10 to 1/2, preferably 1/8 to 1/3, more preferably 1/6 to 1/4.

Sunscreen / UV Protectant

Sunscreens or UV filters are important skin-care products used to prevent photoaging and skin cancer. There are two groups of sunscreens: UVA sunscreens that block UV radiation at a wavelength in the range of about 320 to 400 nm, and UVB sunscreens that block radiation at a wavelength in the range of 290 to 320 nm.

The composition according to the invention comprises an organic and / or inorganic UV sunscreen component which is active in the hydrophilic and / or lipophilic, UV-A and / or UV-B region.

In particular, the UV sunscreen component according to the invention may have a solubility index in the range of 8.0 to 9.5. The UV sunscreen component has an excellent plasticizer function.

Advantageously, the UV sunscreen according to the invention has a molecular weight in the range from 150 to 500 g / mol and may contain an electron resonator which binds to the hydrophobic moiety and the benzene nucleus or polar moiety.

Preferably, the UV filter or UV sunscreen is an organic UV filter.

The hydrophilic and / or lipophilic organic UV sunscreen components are in particular dibenzoylmethane derivatives; Cinnamic acid derivatives; Salicylic acid derivatives; Benzophenone derivatives; β, β-diphenylacrylate derivatives; Aminobenzoic acid derivatives such as p-aminobenzoic acid (PABA) derivatives, benzylidene camphors and derivatives; And mixtures thereof.

As examples of organic UV sunscreen components, those given by the following INCI names may be mentioned:

Para-aminobenzoic acid derivatives:

-PABA,

Ethyl PABA,

Ethyl dihydroxypropyl PABA,

Ethylhexyl dimethyl PABA, especially those sold under the trade name "Escalol 507" by the ISP company,

Glyceryl PABA,

Dibenzoylmethane derivatives:

Butyl methoxydibenzoylmethane, especially those sold under the trade name "Parsol 1789" by the company Hoffmann-LaRoche,

Isopropyl dibenzoylmethane,

Salicylic acid derivatives:

Homosalate, sold under the trade name "Eusolex HMS" by the company Rona / EM Industries,

Ethylhexyl salicylate, sold under the trade name "Neo Heliopan OS" by the company Haarmann and Reimer,

Dipropylene glycol salicylate, sold under the trade name "Dipsal" by the company Scher,

TEA salicylate, sold under the trade name "Neo Heliopan TS" by Haarmann and Reimer,

Cinnamic acid derivatives:

Ethylhexyl methoxycinnamate, especially those sold under the trade name "Parsol MCX" by the company Hoffmann-LaRoche,

Isopropyl methoxycinnamate,

Isoamyl methoxycinnamate, sold under the trade name "Neo Heliopan E 1000" by Haarmann and Reimer,

-Sinoxate,

DEA methoxycinnamate,

Diisopropyl methylcinnamate,

Glyceryl ethylhexanoate dimethoxycinnamate,

β, β-diphenylacrylate derivatives:

Octocrylene, especially those sold under the trade name "Uvinul N539" by the company BASF,

Etocrylene, especially those sold under the trade name "Uvinul N35" by the company BASF,

Benzophenone derivatives:

Benzophenone-1, sold under the trade name "Uvinul 400" by the company BASF,

Benzophenone-2, sold under the trade name "Uvinul D50" by the company BASF,

Benzophenone-3 or oxybenzone, sold under the trade name "Uvinul M40" by the company BASF,

Benzophenone-4, sold under the trade name "Uvinul MS40" by the company BASF,

Benzophenone-5,

Benzophenone-6, sold under the trade name "Helisorb 11" by Norquay,

Benzylidene camphor derivatives:

Terephthalylidene decamper sulfonic acid,

4-methylbenzylidene camphor,

And mixtures thereof.

The organic UV filter is selected from aminobenzoic acid derivatives, dibenzoylmethane derivatives, salicylic acid derivatives, cinnamic acid derivatives, β, β-diphenylacrylate derivatives, benzophenone derivatives, benzylidene camphor derivatives, and mixtures thereof.

Preferred UV sunscreen components are selected from the group consisting of benzylidene camphor derivatives, cinnamic acid derivatives, β, β-diphenylacrylate derivatives, salicylic acid derivatives, and mixtures thereof.

Preferred UV sunscreen components are in particular terephthalylidene dicamphor sulfonic acid (also called Ecamsule), marketed under the name Mexoryl SX ^® by L'Oreal, ethylhexyl methoxycinnamate, octocrylene and ethylhexyl Salicylates, and mixtures thereof.

Especially ethylhexyl methoxycinnamate sold under the trade name UVINUL MC 80 ^® by BASF, ethylhexyl salicylate sold under the trade name NEO HELIOPAN OS ^® by SYMRISE, and octocrylene sold under the trade name NEO HELIOPAN 303 ^® by SYMRISE. This may be mentioned.

Mention may also be made of terephthalylidene dicamphor sulfonic acid, which in particular permits not to alter the visual aspect of the microcapsules suitable for the invention during storage, and therefore the visual aspect of the composition itself according to the invention. Such sunscreens allow the specific protection of the selective fading of the microcapsules according to the invention.

The composition according to the invention may comprise from 0.1% to 30% by weight, for example from 0.5% to 20% by weight, for example from 1% to 15% by weight, and for example at least 1% by weight relative to the total weight of the composition. Sunscreen components.

In one exemplary embodiment, the composition comprises a microcapsule and one or more UV sunscreen components in the range of 0.20 to 10, for example 1 to 9.5, preferably 3 to 9 [inorganic filler / UV sunscreen components]. It may be included in the weight ratio.

Advantageously, the UV filter (s) stabilize the spread of material from the microcapsules into the composition and the composition remains stable.

Cosmetic media and additional ingredients

The composition according to the invention is cosmetically acceptable, ie it contains a physiologically acceptable medium which is non-toxic and suitable for application on human keratin materials.

"Cosmetic acceptable" in the sense of the present invention means a composition having a pleasant appearance, odor or feeling.

A "physiologically acceptable medium" is generally adjusted to the form in which the composition is intended to be conditioned.

In particular, the nature and amount of the components are adapted depending on, for example, whether the composition is formulated as a solid, liquid or powder.

Depending on the purpose and form of skin care or makeup preparations, the compositions of the present invention may, in addition to colorant-containing microcapsules, additionally comprise additional cosmetic ingredient (s) such as volatile and nonvolatile silicone or hydrocarbon oils, surfactants, fillers, And gelling agents, thickeners, film formers, polymers, preservatives, silicone elastomers, self-tanning agents, additional non-captured colorants, active agents, UV filters, perfumes, pH adjusters, and mixtures thereof. .

The pH of the cosmetic composition according to the invention is preferably in the range of 6.5 to 7.5. Preferred bases for adjusting the pH are triethanolamine.

Advantageously, said additional additional cosmetic component (s) is present in an amount of from 0.1% to 70% by weight relative to the weight of the composition.

It is common practice for a person skilled in the art to adjust the type and amount of additives present in the compositions according to the invention so that the desired cosmetic properties of the invention are not affected.

Some such conventional components are detailed below.

Liquid fatty phase

Thus, the compositions according to the invention may comprise one or more fatty phases which are liquid at room temperature and atmospheric pressure, and in particular one or more oils as mentioned below.

In particular, the presence of at least one oil is advantageous insofar as it facilitates application and impart soothing application of the composition.

According to the present invention, the term “oil” means a water-immiscible non-aqueous compound that is liquid at room temperature (25 ° C.) and atmospheric pressure (760 mmHg).

Suitable oil phases for preparing the anhydrous cosmetic compositions according to the invention may comprise hydrocarbon-based oils, silicone oils, fluoro oils or non-fluoro oils, or mixtures thereof.

The oil can be volatile or non-volatile.

These may be of animal, plant, inorganic or synthetic origin. According to one embodiment variant, oils of plant origin are preferred.

The term "volatile oil" means any non-aqueous medium capable of evaporating in contact with skin or lips in less than one hour, at room temperature and atmospheric pressure. Volatile oils are cosmetic volatile oils that are liquid at room temperature. More particularly, volatile oils have an evaporation rate of from 0.01 to 200 mg / cm 2 / min (including limits).

The term "non-volatile oil" means an oil that remains on the skin or keratinous fibers at room temperature and atmospheric pressure. More particularly, the non-volatile oils have an evaporation rate of strictly less than 0.01 mg / cm 2 / min.

To determine the rate of evaporation, a large chamber of about 0.3 m 3 which is placed into a 7 cm diameter crystallization dish, which is tested 15 g of oil or oil mixture, is temperature controlled at a temperature of 25 ° C. and humidity-controlled at 50% relative humidity. Place on a balance with. A pan with a blade directed toward the crystallization dish 20 cm from the bottom of the crystallization dish, in a vertical position above the crystallization dish containing the oil and the mixture, freely evaporating it without stirring (Papst-Motoren, reference 8550). N, rotate at 2700 rpm). The mass of oil remaining in the crystallization dish is measured at regular intervals. Evaporation rates are expressed in mg of oil evaporated per area unit (cm 2) and time unit (minutes).

For the purposes of the present invention, the term "silicone oil" means an oil comprising at least one silicon atom, and in particular at least one Si-O group.

The term "fluoro oil" means an oil comprising at least one fluorine atom.

The term "hydrocarbon-based oil" means an oil mainly containing hydrogen and carbon atoms.

The oil may optionally comprise oxygen, nitrogen, sulfur and / or phosphorus atoms, for example in the form of hydroxyl or acid radicals.

Advantageously, the anhydrous composition of the present invention may comprise from 10% to 50% by weight, preferably from 20% to 40% by weight of oil (s) relative to the total weight of the composition.

a) volatile oils

Volatile oils are hydrocarbon-based oils having 8 to 16 carbon atoms, and in particular C ₈ -C ₁₆ branched alkanes (also known as isoparaffins), for example isododecane (also 2,2,4,4,6-penta). Methylheptane), isodecane and isohexadecane, for example oils sold under the trade names Isopar® or Permethyl®, or in particular linear C ₈ -C ₁₄ alkanes.

Volatile oils that can also be used are volatile silicones, for example volatile linear or cyclic silicone oils, in particular those having a viscosity of 8 centistokes (cSt) or less (8 × 10 ⁻⁶ m 2 / s), and especially 2 to 10 silicon Atoms, in particular those containing 2 to 7 silicon atoms, these silicones optionally comprising alkyl or alkoxy groups having 1 to 10 carbon atoms. As volatile silicone oils which can be used in the present invention, dimethicone having a viscosity of 5 and 6 cSt, octamethylcyclotetrasiloxane, decamethylcyclopentasiloxane, dodecamethylcyclohexasiloxane, heptamethylhexyltrisiloxane, heptamethyloctyl Particular mention may be made of risiloxane, hexamethyldisiloxane, octamethyltrisiloxane, decamethyltetrasiloxane and dodecamethylpentasiloxane, and mixtures thereof.

Volatile fluoro oils such as nonafluoromethoxybutane or perfluoromethylcyclopentane, and mixtures thereof may also be used.

Advantageously, the liquid fatty phase of the present invention has a volatility of 1% to 50% by weight, preferably 2% to 40% by weight, more preferably 5% to 30% by weight relative to the total weight of the liquid fatty phase. Oil (s).

b) non-volatile oils

Non-volatile oils may in particular be selected from nonvolatile hydrocarbon-based, fluoro and / or silicone oils.

Non-volatile hydrocarbon-based oils that may be mentioned in particular include:

Hydrocarbon oils of animal origin,

Hydrocarbon oils of vegetable origin, such as phytostearyl esters such as phytostearyl oleate, phytostearyl isostearate and lauroyl / octyldodecyl / phytostearyl glutamate (Ajinomoto, Eldew PS203), fatty acids of glycerol Triglycerides formed from esters (in particular wherein the fatty acids may have chain lengths ranging from C ₄ to C ₃₆ and in particular C ₁₈ to C ₃₆ ); These oils are possibly linear or branched, and saturated and unsaturated; These oils are especially heptane or octane triglycerides, shea oil, alfalfa oil, poppy oil, millet oil, barley oil, rye oil, candlenut oil, vinegar oil, shea butter, aloe vera oil, sweet almond oil, peach stone oil , Peanut oil, argan oil, avocado oil, baobab oil, borage oil, broccoli oil, calendula oil, camelina oil, canola oil, carrot oil, safflower oil, flaxseed oil, rapeseed oil, cottonseed oil, coconut oil, western Pumpkin Seed Oil, Wheat Germ Oil, Jojoba Oil, Lily Oil, Macadamia Oil, Corn Oil, Meadowfoam Oil, St John's Wort Oil, Monoy Oil, Hazelnut Oil, Apricot Seed Oil, Walnut Oil, Olive Oil, Evening Primrose Oil, Palm Oil, Black Currant Oil, Kiwi Seed Oil, Grape Seed Oil, Pistachio Oil, Winter Pumpkin Oil, Pumpkin Oils, quinoa oils, musk rose oils, sesame oils, soybean oils, sunflower oils, castor oils and watermelon oils, and mixtures thereof, or alternatively caprylic / capric triglycerides such as by Stearineries Dubois Commercially available or those sold under the names Miglyol 810®, 812® and 818® by the company Dynamit Nobel;

Linear or branched hydrocarbons of inorganic or synthetic origin, such as liquid paraffin and derivatives thereof, petrolatum, polydecene, polybutene, hydrogenated polyisobutene Such as Parleam, and squalene,

Synthetic ethers having 10 to 40 carbon atoms, such as dicaprylyl ether;

Synthetic esters, for example the formula R ₁ COOR ₂ , wherein R ₁ represents a linear or branched fatty acid residue comprising 1 to 40 carbon atoms, and R ₂ comprises in particular 1 to 40 carbon atoms Oil of the topological hydrocarbon chain, provided that R ₁ + R ₂ ≧ 10. The esters are in particular esters of alcohols and fatty acids, for example cetostearyl octanoate, esters of isopropyl alcohol, such as isopropyl myristate, isopropyl palmitate, ethyl palmitate, 2-ethylhexyl palmitate, isopropyl Stearate, octyl stearate, hydroxylated esters such as isostearyl lactate, octyl hydroxystearate, alcohols or polyalcohol ricinoleates, hexyl laurate, neopentanoic acid esters such as isodecyl neo Pentanoate, isotridecyl neopentanoate, and isononanoic acid esters such as isononyl isononanoate and isotridecyl isononanoate.

Polyol esters and pentaerythritol esters, for example dipentaerythryl tetrahydroxystearate / tetraisostearate,

Esters of diol dimers and diacid dimers, such as Lusplan DD-DA5® and Lusplan DD-DA7® sold by Nippon Fine Chemical and described in patent application US 2004-175 338,

Copolymers of diol dimers and dimers and esters thereof, such as dilinoleyl diol dimer / dilinoleic dimer copolymers and esters thereof, for example Plandool-G,

Copolymers of polyols and diacid dimers, and esters thereof such as Hailuscent ISDA or dilinoleic acid / butanediol copolymers,

Fatty alcohols having branched and / or unsaturated carbon-based chains containing 12 to 26 carbon atoms, which are liquid at room temperature, for example 2-octyldodecanol, isostearyl alcohol and oleyl alcohol,

C ₁₂ -C ₂₂ higher fatty acids such as oleic acid, linoleic acid or linolenic acid, and mixtures thereof,

Dialkyl carbonates possibly with the same or different dialkyl carbonates, such as dicaprylyl carbonate sold under the name Cetiol CC® by the company Cognis,

Oils of high molar mass, in particular molar masses in the range from about 400 to about 2000 g / mol, in particular from about 650 to about 1600 g / mol. As high molar mass oils which can be used in the present invention, in particular linear fatty acid esters having a total carbon number of 35 to 70, for example pentaerythryl tetrafellargonate, hydroxylated esters such as polyglyceryl-2 triiso Stearates, aromatic esters such as tridecyl trimellitate, esters of branched C ₂₄ -C ₂₈ fatty alcohols or fatty acids such as those described in patent US 6 491 927, and pentaerythritol esters, and especially triisoarachidyl sheets Latex, glyceryl triisostearate, glyceryl tris (2-decyl) tetradecanoate, polyglyceryl-2 tetraisostearate or pentaerythryl tetrakis (2-decyl) tetradecanoate; Phenyl silicones such as Belsil PDM 1000 (MM = 9000 g / mol) from Wacker, non-volatile polydimethylsiloxanes (PDMS), PDMS comprising alkyl or alkoxy groups at the ends of the silicone chain and / or pendant, each of which is 2 To 24 carbon atoms), phenyl silicones such as phenyl trimethicone, phenyl dimethicone, phenyl trimethylsiloxy diphenylsiloxane, diphenyl dimethicone, diphenyl methyldiphenyl trisiloxane and 2-phenylethyl Trimethylsiloxysilicate, dimethicone or phenyl trimethicone (viscosity of 100 cSt or less), and mixtures thereof; And also mixtures of these various oils may be mentioned, and

Mixtures thereof.

According to one embodiment, the composition of the present invention comprises one or more non-volatile oils selected from the following non-volatile hydrocarbon-based oils:

Hydrocarbon-based oils of animal origin;

Hydrocarbon oils of vegetable origin;

Synthetic ethers having 10 to 40 carbon atoms;

Synthetic esters, for example the formula R ₁ COOR ₂ , wherein R ₁ represents a linear or branched fatty acid residue comprising 1 to 40 carbon atoms, and R ₂ contains in particular 1 to 40 carbon atoms, in particular Oil of the topological hydrocarbon chain, provided that R ₁ + R ₂ ≧ 10;

Polyol esters and pentaerythritol esters;

Fatty alcohols which are liquid at room temperature, having branched and / or unsaturated carbon-based chains containing 12 to 26 carbon atoms;

Dialkyl carbonates where two alkyl chains are possibly the same or different;

High molar mass oils; And

Mixtures thereof.

Advantageously, the liquid fatty phase of the invention may comprise at least 40% by weight, preferably at least 60% by weight or 100% by weight of non-volatile oil (s) relative to the total weight of the liquid fatty phase.

As mentioned, the color change composition according to the invention is at least 3% by weight, preferably at least 5% by weight, more preferably at least 8% by weight, advantageously at least 10% by weight, water, C ₂ -C ₈ One or more compounds comprising one or more —OH functional groups selected from monoalcohols, glycols and polyols.

The composition according to the invention may be anhydrous or non-anhydrous.

In the anhydrous compositions according to the invention, "at least one compound selected from polyols, glycols, C ₂ -C ₈ monoalcohols, and mixtures thereof" is at least 3% by weight, preferably at least 5% by weight relative to the weight of the composition , More preferably at least 8% by weight, advantageously at least 10% by weight, and the composition is free of water.

"Free of water" means that the composition comprises less than 3%, preferably less than 1%, more preferably less than 0.5% water, in particular without water.

If appropriate, such small amounts of water may be introduced by components of the composition which may especially contain the balance thereof.

In the non-anhydrous compositions according to the invention, "at least one compound selected from polyols, glycols, C ₂ -C ₈ monoalcohols, and mixtures thereof" is advantageously at least 10% by weight, preferably at least by weight of the composition Is present in an amount of at least 12% by weight, more preferably at least 15% by weight.

Tanning agent

For the purposes of the present invention, the expression “skin self-tanning agent” can, when contacted on the skin, produce a coloring reaction with free amine functional groups, such as amino acids, peptides or proteins, present in the skin. Means a compound.

Other features, aspects, and advantages of the invention will be set forth in the detailed description below.

The self-tanning agents are generally specific monocarbonyl or polycarbonyl compounds, for example isatin, alloxan, ninhydrin, glyceraldehyde, mesotartar aldehyde, glutaraldehyde , Erythrulose, pyrazoline-4,5-dione derivatives, dihydroxy-acetone (DHA), and patent application EP 903 342 as described in patent applications FR 2 466 492 and WO 97/35842. 4,4-dihydroxypyrazolin-5-one as described. Preferably DHA can be used.

DHA can be used in free and / or encapsulated form, for example in lipid vesicles such as liposomes, in particular described in patent application WO 97/25970.

The self-tanning agent (s) is generally present in a proportion in the range of from 0.1% to 15% by weight, preferably from 0.2% to 10% by weight and more preferably from 1% to 8% by weight relative to the total weight of the composition. Exists as.

Silicone elastomer

In the present invention, the composition may comprise one or more silicone elastomers. Any suitable silicone elastomer can be used in accordance with the present invention. Suitable silicone elastomers include, for example, emulsified silicone elastomers such as polyglycerolated silicone elastomers and / or hydrophilic emulsified silicone elastomers such as alkoxylated silicone elastomers, and non-emulsified silicone elastomers. Such silicone elastomers may be spherical or non-spherical.

Polyglycerolated Silicone Elastomer

Suitable polyglycerolated silicone elastomers include, for example, diorganopolysiloxanes containing one or more hydrogen atoms linked to silicon and polyglycerolated compounds containing ethylenically unsaturated groups, especially in the crosslinking addition reaction in the presence of platinum catalysts. Crosslinked elastomeric organopolysiloxanes, which may be obtained by

Polyglycerolated silicone elastomers that can be used include, but are not limited to, the names "KSG-710", "KSG-810", "KSG-820", "KSG-830" and "KSG-840" from Shin-Etsu. Included are commercially available. Suitable polyglycerolated silicone elastomers are also described in U.S. 11 / 085,509, published as U.S. Patent Application Publication No. 2005/0220728, the entirety of which is hereby incorporated by reference.

Hydrophilic Emulsified Silicone Elastomer

The term "hydrophilic emulsified silicone elastomer" means a silicone elastomer comprising at least one hydrophilic chain in addition to the polyglycerolated chain as described above.

In particular, the hydrophilic emulsified silicone elastomer can be selected from polyoxyalkylenated silicone elastomers.

Suitable polyoxyalkylenated elastomers are described in U.S. Pat. Patent 5,236,986, U.S. Patent No. 5,412,004, U.S. Patents 5,837,793 and U.S. Patent 5,811,487.

Suitable polyoxyalkylenated silicone elastomers which may be used are the names "KSG-21", "KSG-20", "KSG-30", "KSG-31", "KSG-32", "KSG" from Shin-Etsu. -33 "," KSG-210 "," KSG-310 "," KSG-320 "," KSG-330 "," KSG-340 "and" X-226146 "sold by Dow Corning, Inc." Those sold as DC9010 "and" DC9011 "are included.

Suitable hydrophilic emulsifying silicone elastomers are also described in U.S. Patent No. 11 / 085,509, published as U.S. Patent Application Publication No. 2005/0220728.

Non-emulsifying silicone elastomer

The term "emulsifying" means an elastomer that does not contain hydrophilic chains, such as polyoxyalkylene or polyglycerolated units.

The non-emulsifying silicone elastomer is preferably a crosslinking addition reaction of diorganopolysiloxanes containing at least one hydrogen linked to silicon and diorganopolysiloxanes containing ethylenically unsaturated groups linked to silicon, in particular in the presence of platinum catalysts; Or a dehydrogenated crosslinking coupling reaction between diorganopolysiloxane containing hydroxyl end groups and diorganopolysiloxane containing one or more hydrogens linked to silicon, especially in the presence of organotin compounds; Or a crosslinking coupling reaction of a diorganopolysiloxane containing hydroxyl end groups with a hydrolyzable organopolysilane; Or thermal crosslinking of organopolysiloxanes, in particular in the presence of organoperoxide catalysts; Or elastomeric crosslinked organopolysiloxanes which can be obtained by cross-linking of organopolysiloxanes via high-energy radiation such as gamma rays, ultraviolet rays or electron beams.

Suitable non-emulsifying silicone elastomers are described in patent applications JP61-194009 A, EP0242219 A, EP0295886 A and EP0765656 A.

Suitable non-emulsifying silicone elastomers that can be used include, but are not limited to, those sold by Dow Corning under the names "DC 9040", "DC 9041", "DC 9509", "DC 9505" and "DC 9506". .

Suitable non-emulsifying silicone elastomers are also disclosed in U.S. Patent No. 11 / 085,509, March 22, 2005 (published as U.S. Patent Application Publication No. 2005/0220728).

The non-emulsifying silicone elastomers are also described, for example, in U.S. As described in patent 5,538,793, it may exist in the form of an elastomeric crosslinked organopolysiloxane powder coated with a silicone resin, in particular a silsesquioxane resin, the contents of which are incorporated herein by reference. Such elastomers are commercially available from Shin-Etsu under the names "KSP-100", "KSP-101", "KSP-102", "KSP-103", "KSP-104" and "KSP-105". .

Elastomeric crosslinked organopolysiloxanes in other powder forms include hybrid silicone powders functionalized with fluoroalkyl groups, especially those sold under the name "KSP-200" by the company Shin-Etsu; Hybrid silicone powders functionalized with phenyl groups, especially those sold under the name "KSP-300" by the company Shin-Etsu.

The silicone elastomer is 0.1 to 95% by weight, preferably 0.1 to 75% by weight, more preferably 0.1 to 50% by weight, more preferably 0.1 to 40% by weight, based on the weight of the composition. Wt%, more preferably 0.5 wt% to 30 wt%, more preferably 0.5 wt% to 25 wt%, more preferably 1 wt% to 20 wt%, more preferably 1 wt% to 15 wt% And even more preferably in an amount of from 3% by weight to 10% by weight.

Film forming agent

Silicone polyamide

The composition according to the invention comprises at least one silicone polyamide.

The silicone polyamides of the compositions are preferably solid at room temperature (25 ° C.) and atmospheric pressure (760 mmHg).

Silicone polyamides of the compositions of the present invention are polymers of the polyorganosiloxane type, for example, documents US-A-5 874 069, US-A-5 919 441, US-A-6 051 216 and US-A-5 981 680. In the present invention, the silicone polymer may belong to two families:

(1) a polyorganosiloxane comprising two or more amide groups located on a polymer chain, and / or

(2) a polyorganosiloxane comprising two or more amide groups located on a graft or branch.

A) In a first variant, the silicone polymer is a polyorganosiloxane as defined above wherein the amide unit is located in the polymer chain.

The silicone polyamide may more particularly be a polymer comprising at least one unit corresponding to formula (I):

1) In the formula: when G represents -C (O) -NH-Y-NH-, G 'represents C (O), and G represents -NH-C (O) -YC (O)-. In the case, G 'represents -NH-,

2) R ⁴ , R ⁵ , R ⁶ and R ⁷ , which may be the same or different, represent a group selected from:

Linear, branched or cyclic, saturated or unsaturated, possibly containing one or more oxygen, sulfur and / or nitrogen atoms in its chain, possibly partially or fully substituted with fluorine atoms, C ₁ to C ₄₀ Hydrocarbon group,

C ₆ -C ₁₀ aryl groups, optionally substituted with one or more C ₁ -C ₄ alkyl groups,

Polyorganosiloxane chains, possibly containing one or more oxygen, sulfur and / or nitrogen atoms,

3) group X, which may be the same or different, represents a linear or branched C ₁ to C ₃₀ alkylenediyl group, possibly containing one or more oxygen and / or nitrogen atoms in its chain;

4) Y is a saturated or unsaturated C ₁ to C ₅₀ linear or branched alkylene, arylene, cycloalkylene, alkylarylene or arylalkylene divalent group, which represents one or more oxygen, sulfur and / or nitrogen atoms May contain and / or contain one of the following atoms or groups of atoms as substituents: fluorine, hydroxyl, C ₃ to C ₈ cycloalkyl, C ₁ to C ₄₀ alkyl, C ₅ to C ₁₀ aryl, Phenyl optionally substituted with 1 to 3 C ₁ to C ₃ alkyl, C ₁ to C ₃ hydroxyalkyl and C ₁ to C ₆ aminoalkyl groups, or

5) Y represents a group corresponding to the formula:

[In the meal,

T is optionally substituted with a polyorganosiloxane chain and possibly contains one or more atoms selected from O, N and S, linear or branched, saturated or unsaturated, C ₃ to C ₂₄ trivalent or tetravalent Represents a hydrocarbon group, or T represents a trivalent atom selected from N, P and Al,

R ⁸ possibly comprises one or more ester, amide, urethane, thiocarbamate, urea, thiourea and / or sulfonamide groups, possibly linear or branched, which may be linked to another chain of the polymer C ₁ -C ₅₀ alkyl group or polyorganosiloxane chain;

6) n is an integer ranging from 2 to 500 and preferably from 2 to 200, and m is an integer ranging from 1 to 1000, preferably 1 to 700 and more preferably 6 to 200.

In the present invention, 80% of the R ⁴ , R ⁵ , R ⁶ and R ⁷ groups of the polymer are preferably selected from methyl, ethyl, phenyl and 3,3,3-trifluoropropyl groups. In another embodiment, 80% of the R ⁴ , R ⁵ , R ⁶ and R ⁷ groups of the polymer are methyl groups.

In the present invention, Y may further represent various divalent groups, including one or two free valences which optionally form a bond with another part of the polymer or copolymer. Preferably, Y represents a group selected from:

a) linear C ₁ to C ₂₀ and preferably C ₁ to C ₁₀ alkylene groups,

b) branched C ₃₀ to C ₅₆ alkylene groups, possibly including rings and non-conjugated unsaturations,

c) a C ₅ -C ₆ cycloalkylene group,

d) a phenylene group optionally substituted with one or more C ₁ to C ₄₀ alkyl groups,

e) C ₁ to C ₂₀ alkylene group comprising 1 to 5 amide groups,

f) a C ₁ to C ₂₀ alkylene group comprising at least one substituent selected from hydroxyl, C ₃ to C ₈ cycloalkane, C ₁ to C ₃ hydroxyalkyl and C ₁ to C ₆ alkylamine groups,

g) polyorganosiloxane chains of the formula:

or

Wherein R ⁴ , R ⁵ , R ⁶ , R ⁷ , T and m are as defined above.

B) In a second variant, the silicone polyamide may be a polymer comprising one or more units corresponding to formula (II):

[In meals:

R ⁴ and R ⁶ , which may be the same or different, are as defined above for formula (I),

R ¹⁰ represents a group as defined above for R ⁴ and R ⁶ , or a group of formula -XG ″ -R ¹² , wherein X is as defined above for formula (I) and R ¹² Is a linear, branched or cyclic, saturated or at least one hydrogen atom or optionally at least one atom selected from O, S and N in its chain and optionally substituted with one or more fluorine atoms and / or one or more hydroxyl groups Unsaturated, C ₁ -C ₅₀ hydrocarbon-based group, or phenyl group optionally substituted with one or more C ₁ -C ₄ alkyl groups, G ″ represents -C (O) NH- and -HN-C (O)- Indicates,

R ¹¹ represents a group of the formula -XG "-R ¹² , wherein X, G" and R ¹² are as defined above,

m ₁ is an integer ranging from 1 to 998, and

m ₂ is an integer ranging from 2 to 500;

In the present invention, the silicone polymer may be a homopolymer, ie a polymer comprising several identical units, in particular units of formula (I) or formula (II).

In the present invention, also, a copolymer comprising several different units of formula (I), ie one or more groups of R ⁴ , R ⁵ , R ⁶ , R ⁷ , X, G, Y, m and n Silicone polymers formed from different polymers in the unit can be used. The copolymer may also be formed from several units of formula (II), in which one or more groups of R ⁴ , R ⁶ , R ¹⁰ , R ¹¹ , m ₁ and m ₂ differ in one or more units.

In addition, polymers comprising at least one unit of formula (I) and at least one unit of formula (II) can be used, wherein the units of formula (I) and the units of formula (II) are possibly identical or different from each other. Do.

Such copolymers may be block polymers or graft polymers.

In this first embodiment of the invention, the silicone polymer may also consist of graft copolymers. Thus, polyamides containing silicone units can be grafted and optionally crosslinked with silicone chains containing amide groups. Such polymers can be synthesized using trifunctional amines.

In one advantageous embodiment of the invention, the groups capable of forming hydrogen bonds are amide groups of the formulas -C (O) NH- and -HN-C (O)-. In this case, the structuring agent may be a polymer comprising one or more units of the formula (III) or (IV):

or

Wherein R ⁴ , R ⁵ , R ⁶ , R ⁷ , X, Y, m and n are as defined above.

In the polyamides of the above formula (III) or (IV), m is in the range from 1 to 700, in particular from 15 to 500, in particular from 50 to 200, n is in particular from 1 to 500, preferably from 1 to 100 and more preferably Is in the range of 4 to 25,

-X is preferably a linear or branched alkylene chain of 1 to 30 carbon atoms, in particular 1 to 20 carbon atoms, especially 5 to 15 carbon atoms, more particularly 10 carbon atoms,

Y is preferably an alkylene chain of 1 to 40 carbon atoms, in particular of 1 to 20 carbon atoms, more particularly of 2 to 6 carbon atoms, in particular of 6 carbon atoms, which is linear or branched and possibly comprises rings and / or unsaturations. .

In formulas (III) and (IV), an alkylene group representing X or Y may optionally contain one or more of the following components in its alkylene moiety:

1) 1 to 5 amide, urea, urethane or carbamate groups,

2) a C ₅ or C ₆ cycloalkyl group, and

3) Phenylene groups optionally substituted with one to three identical or different C ₁ to C ₃ alkyl groups.

In formulas (III) and (IV), the alkylene group may also be substituted with one or more components selected from the group consisting of:

-Hydroxyl group,

C ₃ to C ₈ cycloalkyl groups,

1 to 3 C ₁ to C ₄₀ alkyl groups,

A phenyl group optionally substituted with 1 to 3 C ₁ to C ₃ alkyl groups,

C ₁ to C ₃ hydroxyalkyl groups, and

C ₁ to C ₆ aminoalkyl groups.

In the above formulas (III) and (IV), Y may also represent:

[Wherein R ⁸ represents a polyorganosiloxane chain and T represents a group of the formula:

Wherein a, b and c are independently integers ranging from 1 to 10 and R ¹³ is a hydrogen atom or a group as defined for R ⁴ , R ⁵ , R ⁶ and R ⁷ .

In formulas (III) and (IV), R ⁴ , R ⁵ , R ⁶ and R ⁷ are preferably, independently, linear or branched C ₁ to C ₄₀ alkyl groups, preferably CH ₃ , C ₂ H ₅ , nC ₃ H ₇ or isopropyl group, polyorganosiloxane chain or phenyl group optionally substituted with 1 to 3 methyl or ethyl groups.

As set forth above, the polymer may comprise the same or different units of formula (III) or (IV).

Thus, the polymer may be a polyamide containing several units of formula (III) or (IV) of different length, ie a polyamide corresponding to formula (V):

[Wherein X, Y, n and R ⁴ to R ⁷ have the meanings given above, and m ₁ and m ₂ which are different from each other are selected within the range of 1 to 1000 and p is an integer ranging from 2 to 300].

In the above formula, the units may be configured to form block copolymers, or random copolymers or alternating copolymers. In the copolymer, the units not only have different lengths but can also contain different chemical structures, for example different Y groups. In this case, the polymer may correspond to formula VI:

Wherein R ⁴ to R ⁷ , X, Y, m ₁ , m ₂ , n and p have the meanings given above and Y ¹ is different from Y but is selected from the groups defined for Y. As above, the various units can be configured to form block copolymers, or random copolymers or alternating copolymers.

In this first embodiment of the invention, the structurant may also consist of a graft copolymer. Thus, polyamides containing silicone units can be grafted and optionally crosslinked with silicone chains containing amide groups. Such polymers can be synthesized using trifunctional amines.

In this case, the polymer may comprise one or more units of the formula (VII):

[Wherein, identical or different, X ¹ and X ² have the meanings given for X in formula (I), n is as defined in formula (I), and Y and T are defined in formula (I) And R ¹⁴ to R ²¹ are groups selected from the same group as R ⁴ to R ⁷ , m ₁ and m ₂ are numbers in the range 1 to 1000, and p is an integer in the range 2 to 500.

In the formula (VII), the following is preferable:

p is in the range from 1 to 25 and more preferably in the range from 1 to 7,

R ¹⁴ to R ²¹ are methyl groups,

T corresponds to one of the formulas:

[Wherein R ²² is a hydrogen atom or a group selected from groups defined for R ⁴ to R ⁷ , and R ²³ , R ²⁴ and R ²⁵ are independently linear or branched alkylene groups], more preferably Preferably corresponding to the following formula:

(In particular, R ²³ , R ²⁴ and R ²⁵ represent —CH ₂ —CH ₂ —),

m ₁ and m ₂ are in the range from 15 to 500 and more preferably from 15 to 45,

-X ¹ and X ² represent-(CH ₂ ) _10- , and

-Y represents -CH _2- .

Such polyamides containing graft silicone units of formula (VII) can be copolymerized using polyamide-silicones of formula (II) to form block copolymers, alternating copolymers or random copolymers. The weight percent graft silicone unit (VII) in the copolymer may range from 0.5 weight percent to 30 weight percent.

In the present invention, as set forth above, the siloxane units may be present in the main chain or backbone of the polymer, but may also be present in the graft or pendant chains. In the main chain, the siloxane units may be present in the form of segments as described above. In pendant or graft chains, siloxane units may appear individually or in segments.

In one embodiment variant of the invention, copolymers of silicone polyamides and hydrocarbon-based polyamides or copolymers comprising units of formula (III) or (IV) and hydrocarbon-based polyamide units can be used. In this case, the polyamide-silicon unit may be located at the end of the hydrocarbon-based polyamide.

In one preferred embodiment, the silicone polyamide comprises units of formula III, preferably in which R ⁴ , R ⁵ , R ⁶ and R ⁷ represent a methyl group and one of X and Y has 6 carbon atoms Represents an alkylene group, the other represents an alkylene group having 11 carbon atoms, and n represents the polymerization degree DP of the polymer.

Examples of such silicone polyamides that may be mentioned are commercially available from Dow Corning under the names DC 2-8179 (DP 100) and DC 2-8178 (DP 15) (INCI name nylon-611 / dimethicone copolymer). To be included.

Advantageously, the silicone polyamide is a compound having an INCI name nylon-611 / dimethicone copolymer.

Advantageously, the composition according to the invention comprises at least one polydimethylsiloxane block polymer of general formula (I), having an index m of about 100. The index "m" corresponds to the degree of polymerization of the silicone portion of the polymer.

More preferably, the composition according to the invention comprises at least one polymer, comprising at least one unit of formula (III), wherein m is in the range of 50 to 200, in particular 75 to 150, more particularly about 100.

Preferably, R ⁴ , R ⁵ , R ⁶ and R ⁷ are independently, in formula (III), linear or branched C ₁ -C ₄₀ alkyl groups, preferably CH ₃ , C ₂ H ₅ , nC ₃ represents an H ₇ or isopropyl.

As examples of polymers that can be used, mention may be made of one of the silicone polyamides obtained according to Examples 1 to 3 of US-A-5 981 680.

Preferably, the nylon-611 / dimethicone copolymer sold by Dow Corning under DC 2-8179 is used as the silicone polyamide.

The silicone polyamide has a total content in the range of 0.5% to 45% by weight, preferably in the range of 1% to 30% by weight and more preferably in the range of 2% to 20% by weight relative to the total weight of the composition, May be present in the composition.

Silicone resin

Examples of silicone resins that may be mentioned include:

_{Siloxysilicates} , which may be trimethylsiloxysilicates of the formula [(CH ₃ ) ₃ SiO] _x (SiO _4/2 ) _y (unit MQ), wherein x and y are integers ranging from 50 to 80,

_{Polysilsesquioxanes of the} formula (CH ₃ SiO _3/2 ) _x (unit T), in which x is greater than 100, wherein one or more methyl radicals may be substituted with R groups as defined above,

Polymethylsilsesquioxanes (polysilsesquioxanes in which no methyl radical is substituted by another group). Such polymethylsilsesquioxanes are described in US 5 246 694.

As examples of commercially available polymethylsilsesquioxane resins, the following commercially available may be mentioned:

Resin MK from Wacker, such as Belsil PMS MK: comprises CH ₃ SiO _3/2 repeat units (unit T) and also contains up to 1% by weight of (CH ₃ ) ₂ SiO _2/2 units (unit D) A polymer having an average molecular weight of about 10 000 g / mol, or

KR-220L from Shin-Etsu, which consists of a unit T of formula CH ₃ SiO _3/2 and contains a Si-OH (silanol) end group, KR-242A (which comprises 98% of a unit T and Contains 2% dimethyl unit D and contains Si-OH end groups, or KR-251 (which contains 88% unit T and 12% dimethyl unit D and contains Si-OH end groups) ).

Siloxysilicate resins which may be mentioned include trimethyl siloxysilicate resins (TMS), optionally in powder form. Such resins are commercially available as TMS 803 from SR1000 or Wacker from Momentive Performance Materials. Also mentioned are the Shin-Etsu company name KF-7312J or Dow Corning company DC 749 and DC 593, which are commercially available trimethyl siloxysilicate resins in a solvent such as cyclomethicone.

Advantageously, the silicone resin, for example trimethyl siloxysilicate resin, is 0.5% to 30%, or more preferably 1% to 25% or even more preferably 5% to 25% by weight of the total weight of the composition. It is present in the content of% range.

Preferably, nylon-611 / dimethicone is used as the silicone polyamide and trimethyl siloxysilicate resin is used as the silicone resin.

In another embodiment, the silicone resin is propylphenylsilsesquioxane resin.

Silsesquioxane resins are a specific form of film forming silicone resins. Silicone resins are crosslinked organopolysiloxanes which are solid at room temperature and are generally soluble in organic solvents. If they are soluble in volatile solvents, the silicone resin can form a film when the solvent evaporates. Furthermore, when the solvent for dissolving the silicone resin is absorbed onto the substrate on which the silicone resin is applied, the silicone resin remaining on the substrate may also form a film.

The composition of the present invention may comprise propylphenylsilsesquioxane resin, which is disclosed in patent publication WO2005 / 090444 (September 29, 2005 published); US20040180011 (published September 16, 2004); And US20040156806 (published August 12, 2004).

The propylphenylsilsesquioxane resin comprises at least about 70 mole percent propyl siloxy units (C ₃ H ₇ SiO _3/2 ), and the total moles of siloxy units of the resin, based on the total mole percent of the siloxy units of the resin. Up to about 30 mole%, based on%, of phenyl siloxy units (C ₆ H ₅ SiO _3/2 ).

The mole percent of propyl siloxy units to phenyl siloxy units can be adjusted according to the intended application. As above, the range from about 70:30 to about 100: 0, such as 70:30; 80:20; 90:10; And 100: 0; And propylphenylsilsesquioxane resin having a mole% of propyl siloxy units: phenyl siloxy units in the subrange therebetween. When the mole% of the propyl siloxy units is about 100 mole%, the propylphenylsilsesquioxane resin is referred to as propylsilsesquioxane resin.

Suitable examples of propylphenylsilsesquioxane resins for use in the cosmetic compositions of the present invention include, but are not limited to, propylsilsesquioxane resins sold under the trade name DC 670 Fluid by Dow-Corning.

The propylphenylsilsesquioxane film forming resin is about 0.5% to about 50% by weight, such as about 1% to about 40% by weight, such as about 2% to about 30% by weight, such as about 3% to about 20 Weight percent, and, for example, in amounts ranging from about 4 weight percent to about 10 weight percent (all weights are based on the total weight of the composition).

Silicone acrylate copolymer

The composition of the present invention may contain a silicone acrylate copolymer.

Silicone acrylate copolymers are another specific form of film forming silicone resins. These are available as silicone acrylate copolymers having a (meth) acrylate backbone grafted with silicone chains or as silicone backbones grafted with (meth) acrylate, or as silicone acrylate dendrimers.

Silicone acrylate dendrimers such as those described and claimed in US Pat. No. 6,280,748, all of which are incorporated herein by reference, are preferred for use in the compositions of the present invention. The silicone acrylate dendrimer consists of a vinyl polymer having a carbosiloxane dendrimer structure in its molecular side chain. The vinyl type polymer is characterized by having a carbosiloxane dendrimer structure in its side molecular chain. The term "carbosiloxane dendrimer structure" is a structure having high-molecular weight groups branched with high regularity in the radical direction from a single core.

The vinyl polymer backbone is composed of a vinyl type monomer containing a radical polymerizable vinyl group. In its broadest definition there is no particular limitation on monomers of this type. Particularly preferred vinyl polymers are (meth) acrylates.

The number-average molecular weight of the silicone acrylate dendrimers for use in the compositions of the present invention ranges from about 3,000 to about 2,000,000, such as from about 5,000 to about 800,000.

Particularly preferred silicone acrylate dendrimers for use in the compositions of the present invention include FA-4001 CM silicone acrylate (30% solution in cyclomethicone) from Dow Corning, and FA-4002 ID silicone acrylate (40 in isododecane). % Solution) (INCI name acrylate / polytrimethylsiloxymethacrylate copolymer) is available.

The silicone acrylate copolymer may be present in the composition of the present invention in an amount ranging from about 0.5% to about 20% by weight, such as from about 0.7% to about 15% by weight, such as from about 1% to about 10% by weight. (All weights are based on the total weight of the composition).

Pulverulent phase

The composition of the present invention may contain a fine powder phase material in addition to the microcapsules defined above.

The composition according to the invention may comprise at least 1% by weight, more particularly at least 5% by weight, of the fine powder phase relative to the total weight of the composition.

More particularly, the composition according to the invention may comprise at least 15% by weight, more particularly at least 20% by weight, of the fine powder phase relative to the total weight of the composition.

For the purposes of the present invention, the micropowder phase comprises, in addition to the microcapsules required according to the invention, fillers; Pigments; nacre; Particles having a metallic tint; And one or more non-capturing particulate materials selected from mixtures thereof.

Thus, the composition according to the invention advantageously comprises from 1% to 70% by weight, preferably from 5% to 60% by weight and more preferably from 10% to 50% by weight relative to the total weight of the composition. It may comprise a fine powder phase.

Thus, the composition according to the invention advantageously comprises from 15% to 70% by weight, preferably from 20% to 60% by weight and more preferably from 25% to 50% by weight relative to the total weight of the composition. It may comprise a fine powder phase.

a) non capture filler

For the purposes of the present invention, the term "filler" should be understood to mean any form of colorless or white solid particles, in an insoluble and dispersed form in the medium of the composition.

Such fillers of inorganic or organic, natural or synthetic type provide softness to the compositions containing them and give makeup results with a matte effect and uniformity.

The composition according to the invention may comprise from 0.5% to 50% by weight and preferably from 1% to 30% by weight of fillers relative to the total weight of the composition.

Such amounts of fillers do not include the amount of hollow particles required simultaneously in accordance with the present invention.

Among the inorganic fillers that can be used in the compositions according to the invention, natural or synthetic mica, talc, kaolin, natural or synthetic sericite, silica, hydroxyapatite, boron nitride, calcium carbonate, hollow silica microspheres (silica beads from Maprecos) ), Glass or ceramic microcapsules; Mention may be made of composites of silica and titanium dioxide (such as the TSG series sold by Nippon Sheet Glass), and mixtures thereof.

Among the organic fillers that can be used in the compositions according to the invention, polyamide powders (Nylon® Orgasol from Atochem), poly-β-alanine powders and polyethylene powders, polytetrafluoroethylene (Teflon®) powders, laurolysine, Tetrafluoroethylene polymer powders, spherical powders of crosslinked elastomeric organopolysiloxanes (especially described in JP-A-02-243612, for example sold by Dow Corning under the name Trefil Powder E 2-506C or DC9506 or DC9701) Those), hydrolysis and polycondensation products of the siloxane mixtures of the silicone resins (formula (R) ₃ SiOHCH ₃ and Si (OCH ₃ ) ₄ , wherein R represents an alkyl group having from 1 to 6 carbon atoms) Shin-Etsu KSP100)), silicone resin microbeads (e.g. Tospearl® from Toshiba), Polypore® L200 (Chemdal Corporation), polyurethane powders, especially crosslinked polyurethane powders comprising copolymers (The copolymer comprises trimethylol hexyl lactone, for example a polymer of hexamethylene diisocyanate / trimethylol hexyl lactone, sold under the name Plastic Powder D-400® or Plastic Powder D-800® by Toshiki), And mixtures thereof.

Among other organic fillers that can be used in the compositions according to the invention, mention may be made of starch-based or cellulose-based powders. Examples of such fillers that may be mentioned include the Dry Flo product sold by Akzo Nobel and the Cellubeads product sold by Daito Kasei.

Advantageously, the filler according to the invention is preferably an inorganic filler selected from mica, sericite, kaolin, talc and silica, and mixtures thereof.

c) non-capturing particulate material for coloring purposes

Such additional colored particulate material may be present in a proportion of 0 to 40% by weight, preferably 1 to 30% by weight or even 5 to 30% by weight relative to the total weight of the composition containing it.

It may in particular be particles with pigments, nacres and / or metallic tint products, these materials possibly being surface treated.

The term "pigment" should be understood to mean white or colored, inorganic or organic particles which are insoluble in aqueous solution, which are intended to make the composition containing them colored and / or opaque.

The composition according to the invention may comprise from 0.01% to 40% by weight, preferably from 0.1% to 20% by weight and more preferably from 1% to 15% by weight relative to the total weight of the composition. .

The pigments can be white or colored, and inorganic and / or organic.

As inorganic pigments that can be used in the present invention, titanium oxide, titanium dioxide, zirconium oxide, zirconium dioxide, cerium oxide or cerium dioxide and also zinc oxide, iron oxide or chromium oxide, ferric blue, manganese violet ), Ultramarine blue and chromium hydrates, and mixtures thereof may be mentioned.

In certain embodiments, the composition of the present invention is a non-captured inorganic pigment selected from at least titanium dioxide, zinc oxide, cerium oxide, and / or bismuth oxychloride or boron nitride to improve the white color of the composition. It contains a filler selected from.

In certain embodiments, the compositions of the present invention contain at least non-capture TiO ₂ .

It may also be a pigment having a structure which may be of the type sericite / brown iron oxide / titanium dioxide / silica, for example. Such pigments are commercially available, for example, from Coverleaf NS or JS from Chemicals and Catalysts, which have a contrast ratio of 30 in the area.

It may also be a pigment having a structure which may be, for example, a type of silica microspheres containing iron oxide. An example of a pigment having such a structure is a product sold by Miyoshi as PC Ball PC-LL-100 P, which is composed of silica microspheres containing yellow iron oxide.

Advantageously, the pigments according to the invention are iron oxide and / or titanium dioxide.

The term "pearl layer" refers to an iridescent or non-colored colored object of any shape, having a color effect through optical interference, in particular produced or alternatively synthesized in its shell by a particular mollusk. It is to be understood to mean particles.

The composition of the present invention may comprise 1% by weight to 80% by weight, preferably 5% by weight to 60% by weight and more preferably 10% by weight to 40% by weight relative to the total weight of the composition.

The nacres are from pearlescent pigments such as titanium mica coated with iron oxide, titanium mica coated with bismuth oxychloride, titanium mica coated with chromium oxide, titanium mica coated with organic dyes and also pearlescent pigments based on bismuth oxychloride. Can be selected. It may also be a mica particle on which its surface overlaps two or more successive layers of metal oxides and / or organic dyes.

Examples of nacres that may also be mentioned include natural mica coated with titanium oxide, iron oxide, natural pigments or bismuth oxychloride.

Among the commercially available nacres, nacres sold by Engelhard, Timica, Flamenco and Duochrome (Mica based), nacres sold by Merck, mica-based nacres prestige sold by Eckart, and synthetic mica sold by Sun Chemical The base nacre Sunshine may be mentioned.

The nacres may more particularly have a yellow, pink, red, brass, orange, brown, gold and / or coppery color or tint.

Examples of nacres that can be used in the context of the present invention, in particular Engelhard under the names Brilliant gold 212G (Timica), Gold 222C (Cloisonne), Sparkle gold (Timica), Gold 4504 (Chromalite) and Monarch gold 233X (Cloisonne) Commercially available gold nacres; Brass nacres sold especially by the company Merck under the names Bronze fine (17384) (Colorona) and Bronze (17353) (Colorona) and the company Engelhard under the name Super bronze (Cloisonne); Orange nacres sold especially by the company Engelhard under the names Orange 363C (Cloisonne) and Orange MCR 101 (Cosmica) and Merck under the names Passion orange (Colorona) and Matte orange (17449) (Microna); A brown-toned nacre, sold especially by Engelhard under the names Nuantique copper 340XB (Cloisonne) and Brown CL4509 (Chromalite); Nacres with a coppery tint, especially sold under the name Copper 340A (Timica) by Engelhard; The nacres with a red tint sold especially by the company Merck under the name Sienna fine (17386) (Colorona); Nacres with a yellow tint, especially sold under the name Yellow (4502) (Chromalite) by Engelhard; The nacre of a red tint with a gold tint, sold especially by the company Engelhard under the name Sunstone G012 (Gemtone); Pink nacre, sold especially by the company Engelhard under the name Tan opale G005 (Gemtone); Black nacres with a gold hue, sold especially by the company Engelhard under the name Nu antique bronze 240 AB (Timica); Blue nacre, sold especially by the company Merck under the name Matte blue (17433) (Microna); Mention may be made in particular of white nacres with a silver hue sold under the name Xirona Silver by Merck, in particular the gold-green pink-orange nacre, sold under the name Indian summer (Xirona) under Merck, and mixtures thereof.

Advantageously, the nacre according to the invention is a mica coated with titanium dioxide or iron oxide, and also bismuth oxychloride.

In the meaning of the present invention, the term "particles with metallic tint" means particles whose properties, sizes, structures and surface conditions can reflect incident light, in particular in an iridescent manner.

The composition according to the invention may comprise particles having a metallic tint of 1% to 50% by weight and preferably 1% to 20% by weight relative to the total weight of the composition.

Particles having a substantially flat outer surface are also suitable because their size, structure and surface state can, if possible, result in easier mirror reflection (hereinafter referred to as mirror effect) more easily.

Particles with metallic tint that can be used in the present invention can reflect light in all components of the visible region, for example, without significantly absorbing one or more wavelengths. The spectral reflectance of such particles can be greater than 70% and more preferably at least 80%, or more preferably 90% or 95%, for example in the range of 400-700 nm.

Such particles generally have a thickness of 1 μm or less, in particular 0.7 μm or less, especially 0.5 μm or less.

Particles with metallic shades that can be used in the present invention are especially selected from:

Particles of at least one metal and / or at least one metal derivative,

Particles comprising a monomaterial or composite organic or inorganic substrate, at least partially coated with at least one layer having a metallic tint comprising at least one metal and / or at least one metal derivative, and

Mixture of the particles.

Among the metals that may be present in the particles, for example Ag, Au, Cu, Al, Ni, Sn, Mg, Cr, Mo, Ti, Zr, Pt, Va, Rb, W, Zn, Ge, Te and Se, And mixtures or alloys thereof may be mentioned. Ag, Au, Cu, Al, Zn, Ni, Mo and Cr and mixtures or alloys thereof (for example bronze and brass) are preferred metals.

The term "metal derivative" is intended to mean compounds derived from metals, in particular oxides, fluorides, chlorides and sulfides.

Among the metal derivatives which may be present in the particles, in particular metal oxides, for example titanium oxide, in particular TiO ₂ , iron oxide, in particular Fe ₂ O ₃ , tin oxide, chromium oxide, barium sulphate and the following compounds: MgF ₂ , CrF ₃ , ZnS, ZnSe, SiO ₂ , Al ₂ O ₃ , MgO, Y ₂ O ₃ , SeO ₃ , SiO, HfO ₂ , ZrO ₂ , CeO ₂ , Nb ₂ O ₅ , Ta ₂ O ₅ , MoS ₂ , and these Mixtures or alloys thereof may be mentioned.

Examples of such particles that may be mentioned include aluminum particles such as those sold under the name Starbrite 1200 EAC ^{® by the} company Siberline and Metalure ^® by the company Eckart.

Metal powders of copper or alloy mixtures (eg, reference number 2844 sold by Radium Bronze), metallic pigments such as aluminum or bronze (eg sold under the name Rotosafe 700 by Eckart), silica-coated aluminum particles (by Eckart) Commercially available under the name Visionaire Bright Silver), and metal alloy particles such as silica-coated bronze (alloy of copper and zinc) powder (commercially available from Eckart under the name Visionaire Bright Natural Gold).

As examples of the second type of particles, more particularly the following may be mentioned:

Glass particles coated with a metallic layer, in particular those described in JP-A-09188830, JP-A-10158450, JP-A-10158541, JP-A-07258460 and JP-A-05017710.

As examples of such particles comprising a glass substrate, mention may be made of those coated with silver, gold or titanium, respectively, in the form of platelets, sold under the name Microglass Metashine by the company Nippon Sheet Glass. Particles with silver-coated glass substrates in the form of platelets are sold under the name Microglass Metashine REFSX 2025 PS by the company Toyal. Particles with a glass substrate coated with a nickel / chromium / molybdenum alloy are sold under the names Crystal Star GF 550 and GF 2525 by Toyal. Coated with brown iron oxide or titanium oxide, tin oxide or mixtures thereof are, for example, those sold under the name Reflecks by Engelhard or those under the name Metashine MC 2080GP by Nippon Sheet Glass.

Such metal-coated glass particles may be coated with silica, for example those sold under the name Metashine series PSS1 or GPS1 by the company Nippon Sheet Glass.

Particles comprising a spherical glass substrate optionally coated with metal are those sold especially under the name Prizmalite Microsphere by the company Prizmalite Industries.

Nippon Sheet Glass Co. Pigments in the Metashine 1080R range sold by the company Ltd are also suitable for the present invention. More particularly, such pigments described in patent application JP 2001-11340 are C-Glass glass flakes comprising 65% to 72% SiO ₂ , coated with a layer of titanium oxide (TiO ₂ ) of the rutile type. Such glass flakes have an average thickness of 1 micron and an average size of 80 microns, ie, the ratio of average size / average thickness is 80. They have a blue, green or yellow tint or silver tint, depending on the thickness of the TiO ₂ layer.

Particles comprising a silver-coated borosilicate substrate are also known as "white nacres."

Particles in the form of platelets, comprising metal substrates such as aluminum, copper or bronze, are sold under the name Visionaire under the trade names Starbrite and Eckart by the company Silberline.

80-100 μm, comprising particles comprising a synthetic mica substrate coated with titanium dioxide, and a synthetic mica (fluorofluorogoite) substrate coated with, for example, 12% of the total weight of the particles. Particles with size are commercially available from Nihon Koken under the name Prominence.

Particles with a metallic tint can also be selected from particles consisting of a stack of two or more layers with different refractive indices. Such layers may be of polymeric or metallic type, in particular one or more polymeric layers may be included.

Thus, the particles having a metallic effect can be particles derived from a multilayer polymer film.

The choice of materials intended to constitute the various layers of the multilayer structure is clearly made so that the particles form the desired metallic effect.

Such particles are described in particular in WO 99/36477, US 6 299 979 and US 6 387 498 and more particularly in the goniochromatic paragraphs below.

Advantageously, the particles with metallic tint according to the invention are particles with spherical or non-spherical glass substrates, and also particles with metallic substrates.

In a particular embodiment, the composition according to the invention contains at least, in particular reflective particles selected from nacres, particles with metallic shades, and bismuth oxychloride and mixtures thereof.

As examples of the second type of particles, more particularly the following may be mentioned:

Particles comprising a synthetic mica substrate coated with titanium dioxide or particles comprising a brown iron oxide or spherical glass substrate optionally coated with titanium oxide, tin oxide or mixtures thereof, for example those sold under the name Reflecks by the company Engelhard. Or those sold under the name Metashine MC 2080GP by Nippon Sheet Glass. Such particles are detailed in JP-A-09188830, JP-A-10158450, JP-A-10158541, JP-A-07258460 and JP-A-05017710.

Particles having a metallic effect comprising an inorganic substrate coated with a metal. It may be a particle with a silver-coated borosilicate substrate, also known as a "white nacre".

Particles comprising a spherical glass substrate coated with silver, especially those sold under the name MICROGLASS METASHINE REFSX 2025 PS by the company TOYAL. Particles comprising a spherical glass substrate coated with a nickel / chromium / molybdenum alloy, especially those sold under the names CRYSTAL STAR GF 550, GF 2525 by TOYAL.

Particles with metallic effect and particles with a metallic compound coated on the surface, METASHINE ^® LE 2040 PS, METASHINE ^® 5 MC5090 PS or METASHINE ^® MC280GP (2523) from NIPPON SHEET GLASS, SPHERICAL SILVER POWDER ^® DC 100 from Engelhard , SILVER FLAKE ^® JV 6 or GOLD POWDER ^® A1570, STARLIGHT REFLECTIONS FXM ^{® from} ENERGY STRATEGY ASSOCIATES INC, BRIGHT SILVER ^® 1 E 0.008X0.008 from MEADOWBROOK® S, ULTRAMIN ^® (COSTIC CO., LTD.) VISIONNAIRE BRIGHT SILVER SEA ^® , COSMETIC METALLIC POWDER VISIONAIRE NATURAL GOLD ^® (60314) or COSMETIC METALLIC POWDER VISIONAIRE HONEY ^® 560316 °.

More preferably, such reflective particles are selected from the group consisting of bismuth oxychloride particles, mica particles coated with titanium oxide, and mixtures thereof.

In certain embodiments, the compositions of the present invention contain at least bismuth oxychloride (CI 77163).

Advantageously, the compositions of the present invention may also contain nacres (which are also known as "white nacres") comprising at least silver-coated borosilicate substrates. Such particles are commercially available from MERCK under the trade name Xirona Silver.

The composition may comprise reflective particles predispersed in one oil selected from inorganic, vegetable oils and ester oils.

In a preferred embodiment, such reflective particles are present in the compositions of the present invention in predispersed form in one or more oils selected from the group:

-Inorganic oils

Vegetable oils such as sweet almond oil, wheat germ oil, jojoba oil, apricot oil, soybean oil, canola oil, castor oil;

Esters such as octyl dodecanol, octyldodecyl neopentanoate, caprylic / capric triglycerides, pentaerythryl tetraisostearate, isodecyl neopentanoate, diisopropyl sebacate, C ₁₂ -C ₁₅ alkyl benzoate, ethylhexyl ethylhexanoate, ethylhexyl hydroxystearate, and

Mixtures thereof.

More preferably, the oil is selected from the group consisting of ethyl (2) hexyl hydroxystearate and castor oil, and preferably ethyl (2) hexyl hydroxystearate.

Thus, in certain and preferred embodiments, the compositions of the present invention include, in a physiologically acceptable medium, the following:

(i) at least microcapsules of the invention and

(ii) reflective particles in a predispersed form in at least one oil selected from the group consisting of at least ethyl (2) hexyl hydroxystearate or castor oil and preferably ethyl (2) hexyl hydroxystearate.

Advantageously, the reflective particles are selected from mica particles and bismuth oxychloride particles covered with titanium oxide, the particles being predispersed ethyl (2) hexylhydroxystearate.

In certain embodiments, the compositions of the present invention comprise 68% to 72% by weight of bismuth oxychloride in 28% to 32% by weight of ethyl (2) hexylhydroxystearate relative to the total weight of the predispersion. Predispersion, ie the weight ratio of bismuth oxychloride / oil (s) is at least 2, and preferably in the range of 2 to 2.6.

Such dispersions are commercially available from MERCK under the trade name Xirona Silver.Biron ^® Liquid Silver.

Additional moisturizers

For particular care applications, the compositions according to the invention may comprise one or more additional moisturizers (also known as wetting agents).

The humectant (s) may be present in the composition in an amount ranging from 0.1% to 15% by weight, in particular from 0.5% to 10% by weight or even from 1% to 6% by weight relative to the total weight of the composition.

Polyhydric alcohols, preferably C ₂ -C ₈ and more preferably C ₃ -C ₆ , preferably such as glycerol, propylene glycol, 1,3-butylene glycol, pentylene glycol, hexylene glycol, dipropylene Glycols, diethylene glycol and diglycerols, and mixtures thereof, glycerol and derivatives thereof are known as humectants or wetting agents.

The composition according to the invention may also comprise additional moisturizers or humectants.

Such additional moisturizers or wetting agents which may be mentioned in particular include sorbitol, glycol ethers (particularly 3 to 16 carbon atoms), such as mono-, di- or tripropylene glycol (C ₁ -C ₄ ) alkyl ethers, mono-, di- Or triethylene glycol (C ₁ -C ₄ ) alkyl ethers, ureas and derivatives thereof, in particular Hydrovance (2-hydroxyethylurea), lactic acid, hyaluronic acid, AHA, BHA, sodium pydolate, xylitol, commercially available from National Starch , Serine, sodium lactate, ectoin and derivatives thereof, chitosan and derivatives thereof, collagen, plankton, extracts of Imperata cylindra (commercially available from Sederma under the name Moist 24), acrylic acid homopolymers (e.g. NOF Corporation Lipidure-HM ^® ), beta-glucan, in particular sodium carboxymethyl beta-glucan (manufactured by Mibelle-AG-Biochemistry); Mixtures of passionflower oil, apricot oil, corn oil and rice bran oil (marketed under the name Nutralipids ^® by Nestle); C-glycoside derivatives (such as those described in patent application WO 02/051 828), in particular C-β- in the form of a solution containing 30% by weight of active substance in a water / propylene glycol mixture (60/40% by weight) D-xylpyranoside-2-hydroxypropane (such as the product made by Chimex under the tradename Mexoryl SBB ^® ); Musk rose oil sold by Nestle; Spheres of collagen and chondroitin sulfate of marine origin (Atelocollagen) (commercially available from Engelhard Lyon under the name Marine Filling Spheres); Hyaluronic acid spheres (such as those sold by the company Engelhard Lyon); Arginine, argan oil and mixtures thereof.

Preferably, glycerol, urea, and a moisturizing agent selected from derivatives thereof, particularly ^® National Starch's Hydrovance, C- glycoside derivatives (such as those described in patent application WO 02/051 828), in particular a water / propylene glycol mixture (60 / C-β-D-xylpyranoside-2-hydroxypropane (such as the product manufactured by Chimex under the tradename Mexoryl SBB ^® ) in the form of a solution containing 30% by weight of active substance in 40% by weight), Moisturizers selected from argan oils, and mixtures thereof can be used.

More preferably, glycerol may be used.

Active agent

Advantageously, the composition of the present invention comprises at least one UV filter and eventually an active agent.

Thus, especially for the care or makeup application of the skin, the composition according to the invention may comprise one or more active agents, selected from:

In one advantageous embodiment, the combinations according to the invention can be combined with one or more auxiliary cosmetic actives.

Such active agents may be selected from anti-wrinkle agents, vitamins, in particular B3, B8, B12 and B9, humectants, strippers, anti-aging agents, bleaches, antioxidants and the like.

Such active agents may be present in the composition in an amount ranging from 0.001% to 20% by weight, preferably 0.01% to 10% by weight, more preferably 0.01% to 5% by weight, relative to the total weight of the composition. have.

Anti-wrinkle agents: ascorbic acid and derivatives thereof such as magnesium ascorbyl phosphate and ascorbyl glucoside; Tocopherol and its derivatives such as tocopheryl acetate; Nicotinic acid and precursors thereof such as nicotinamide; Ubiquinone; Glutathione and precursors thereof such as L-2-oxothiazolidine-4-carboxylic acid; In particular C-glycoside compounds and derivatives thereof as described below: extracts of plants, in particular sea fennel and extracts of olive leaves; And also plant proteins and their hydrolysates, such as those of rice or soy protein; Algae extracts, especially extracts of kelp; Bacterial extracts; Sapogenin, such as diosgenin and extracts of Dioscorea plants containing them, in particular extracts of wild yams; α-hydroxy acid; β-hydroxy acids such as salicylic acid and 5-n-octanoylsalicylic acid; Oligopeptides and pseudodipeptides and acyl derivatives thereof, in particular {2- [acetyl- (3-trifluoromethylphenyl) amino] -3-methyl-butyrylamino} acetic acid and lipopeptides (trade names Matrixyl 500 and Matrixyl from Sederma) Marketed as 3000); Lycopene; Manganese salts and magnesium salts, in particular manganese and magnesium gluconate; And mixtures thereof may be mentioned;

Stripping agents: beta-hydroxy acids, in particular salicylic acid and derivatives thereof other than 5-n-octanoylsalicylic acid; Urea; Glycolic acid, citric acid, lactic acid, tartaric acid, malic acid or mandelic acid; 4- (2-hydroxyethyl) piperazine-1-propanesulfonic acid (HEPES); Extract of Saphora japonica; honey; N-acetylglucosamine; Sodium methylglycine diacetate, alpha-hydroxy acid (AHA), beta-hydroxy acid (BHA), and mixtures thereof may be mentioned;

Bleaching agents: ceramides, vitamin C and derivatives thereof, in particular vitamin CG, CP and 3-O ethyl vitamin C, alpha- and beta-albutin, ferulic acid, kojic acid, resorcinol and derivatives thereof, calcium D-panthene sulfonate , lipoic acid, ellagic geusan, vitamin B3, phenylethyl resorcinol (e.g. Symrise Inc. Symwhite 377 ^®), kiwi, available from Gattefosse (Actinidia chinensis) juice, Paeonia extract of suffructicosa roots (e.g. name from Ichimaru Pharcos Co. Botanpi Liquid Products marketed as B ^® ), extracts of brown sugar ( Saccharum officinarum ) (such as those sold under the name Molasses Liquid by Taiyo Kagaku), mixtures of undecylenic acid and undecylenoyl phenylalanine (such as from Seppic) Sepiwhite MSH ^® ) may be mentioned;

Antioxidants: more particularly tocopherol and esters thereof, in particular tocopheryl acetate; EDTA, ascorbic acid and derivatives thereof, in particular magnesium ascorbyl phosphate and ascorbyl glucoside; Chelating agents such as BHT, BHA, N, N'-bis (3,4,5-trimethoxybenzyl) ethylenediamine and salts thereof, and mixtures thereof may be mentioned.

If the active ingredient ascorbyl glucoside is present in the cosmetic composition according to the invention, it is present in an amount of less than 0.05% by weight, more preferably 0.01% by weight relative to the total weight of the composition.

Herbal formulation

The compositions according to the invention may be in the form of keratin materials, in particular makeup compositions for skin or lips and / or care compositions.

In particular, the compositions according to the invention are particularly suitable for BB products or foundations applied to the face or neck, dark circle masking products, concealer products, tint creams, coloring compositions or after-rays for the care or makeup of the skin, in particular the face or body. after-sun) composition.

In a preferred embodiment, the composition according to the invention is a non-rinsing composition: it is intended that the composition does not rinse after application on the skin.

In another preferred embodiment, the composition according to the invention is not contained in a dispenser comprising a pump. This is advantageous because it avoids the risk of microcapsules being destroyed. In fact, when using such a dispenser, the microcapsules may be crushed before application on keratin materials.

The compositions according to the invention can be in any herbal form conventionally used for topical application, in particular milk or liquid or semi-liquid consistency milk or cream or gel types of soft, semi-solid or solid consistency, or alternatively in the aqueous phase. Emulsion (O / W) obtained by dispersing the fatty phase, emulsion (W / O) obtained by dispersing the aqueous phase in the fatty phase, multiple emulsions (W / O / W, O / W / O), or foam It is understood that it may be in form.

In particular the composition is in the form selected from the group consisting of gels, in particular transparent gels, water-in-oil emulsions, oil-in-water emulsions and foams.

Surfactants

The composition according to the invention may comprise one or more surfactants (emulsifiers), especially selected from amphoteric, anionic, cationic and nonionic surfactants, used alone or as a mixture.

The surfactants are generally present in proportions which, for example, can range from 0.3% to 20% by weight, in particular from 0.5% to 15% by weight and more particularly from 1% to 10% by weight, relative to the total weight of the composition, Present in the composition.

Needless to say, the surfactant is more particularly chosen to effectively stabilize the emulsion under consideration according to the invention, ie of the O / W, W / O or O / W / O type. The selection belongs to the ability of those skilled in the art.

For example, when the emulsifier potassium cetyl phosphate is present in the cosmetic composition according to the invention, it is for example 0.2% to 3% by weight, more particularly 0.5% to 1.5% by weight relative to the total weight of the composition and More preferably from 0.8% to 1.2% by weight, and even more preferably from 1% by weight.

O / W Emulsifier

Examples that may be mentioned for O / W emulsions are nonionic surfactants, and in particular fatty acids and polyols having saturated or unsaturated chains comprising for example 8 to 24 carbon atoms, preferably 12 to 22 carbon atoms Esters of, and oxyalkylenated derivatives thereof, ie derivatives comprising oxyethylenated and / or oxypropyleneated units, such as glyceryl esters of C ₈ -C ₂₄ fatty acids, and oxyalkylenated derivatives thereof; Polyethylene glycol esters of C ₈ -C ₂₄ fatty acids, and oxyalkylenated derivatives thereof; Sorbitol esters of C ₈ -C ₂₄ fatty acids, and oxyalkylenated derivatives thereof; Sugar (sucrose, glucose or alkylglucose) esters of C ₈ -C ₂₄ fatty acids, and oxyalkylenated derivatives thereof; Fatty alcohol ethers; Sugar ethers of C ₈ -C ₂₄ fatty alcohols, and mixtures thereof.

Glyceryl esters of fatty acids that may be mentioned in particular are glyceryl stearate (glyceryl monostearate, distearate and / or tristearate) (CTFA name: glyceryl stearate) or glyceryl ricinoleate, and Mixtures.

Polyethylene glycol esters of fatty acids that may be mentioned in particular are polyethylene glycol stearate (polyethylene glycol monostearate, distearate and / or tristearate) and more particularly polyethylene glycol 50 OE monostearate (CTFA name: PEG-50 stearate) Rate) and polyethylene glycol 100 OE monostearate (CTFA name: PEG-100 stearate), and mixtures thereof.

Mixtures of these surfactants, for example products containing glyceryl stearate and PEG-100 stearate, sold under the name Arlacel 165 by the company Uniqema, and glyceryl stearate, sold under the name Tegin by the company Goldschmidt (Glyceryl mono-distearate) and products containing potassium stearate (CTFA name: Glyceryl Stearate SE) can also be used.

Fatty acid esters of glucose or alkylglucose which may be mentioned are in particular glucose palmitate, alkylglucose sesquistearate, for example methylglucose sesquistearate, alkylglucose palmitate, for example methylglucose palmitate or ethylglucose palmi Tates, fatty esters of methylglucoside and more particularly diesters of methylglucoside and oleic acid (CTFA name: methyl glucose dioleate); Mixed esters of methylglucoside and oleic acid / hydroxystearic acid mixture (CTFA name: methyl glucose dioleate / hydroxystearate); Esters of methylglucoside and isostearic acid (CTFA name: methyl glucose isostearate); Esters of methylglucoside and lauric acid (CTFA name: methyl glucose laurate); Mixtures of monoesters and diesters of methylglucoside and isostearic acid (CTFA name: methyl glucose sesquiisostearate); Mixtures of monoesters and diesters of methylglucoside and stearic acid (CTFA name: methyl glucose sesquistearate) and in particular the products sold under the trade name Glucate SS by the company Amerchol, and mixtures thereof.

Examples of oxyethylenated ethers of fatty acids and glucose or alkylglucose which may be mentioned are polyethylene glycols of diesters of stearic acid and methyl glucose containing oxyethylenated ethers of fatty acids and methylglucose, and in particular about 20 mol of ethylene oxide. Ethers (CTFA name: PEG-20 methyl glucose distearate), such as the product sold under the name Glucam E-20 distearate by the company Amerchol; Polyethylene glycol ethers (CTFA name: PEG-20 methyl glucose sesquistearate) of a mixture of stearic acid containing about 20 mol of ethylene oxide and monoesters and diesters of methylglucose and in particular by the company Amerchol under the trade name Glucamate SSE- Products sold under the trade name Grillocose PSE-20 by the company Goldschmidt, and mixtures thereof.

Examples of sucrose esters that may be mentioned include sucrose palmitostearate, sucrose stearate and sucrose monolaurate.

Examples of fatty alcohol ethers that may be mentioned are polyethylene glycol ethers of fatty alcohols containing 8 to 30 carbon atoms, in particular 10 to 22 carbon atoms, such as cetyl alcohol, stearyl alcohol or cetearyl alcohol (cetyl alcohol and Polyethylene glycol ethers). Examples that may be mentioned include ethers containing 1 to 200, preferably 2 to 100 oxyethylene groups, such as those of the CTFA names Ceteareth-20 and Ceteareth-30, and mixtures thereof.

Sugar ethers which may be mentioned in particular are alkylpolyglucosides, for example decylglucoside, for example the product sold under the name Mydol 10 by the company Kao Chemicals, the product sold under the name Plantaren 2000 by the company Henkel, and SEPPIC The product sold under the name Oramix NS 10 by the company; Caprylyl / capryl glucoside, for example the product sold under the name Oramix CG 110 by the company SEPPIC or under the name Lutensol GD 70 by the company BASF; Laurylglucoside, for example the product sold under the name Plantaren 1200 N and Plantacare 1200 by the company Henkel; Cocoglucoside, for example the product sold under the name Plantacare 818 / UP by the company Henkel; Setostearyl glucoside, optionally as a mixture with cetostearyl alcohol, sold under the name Montanov 68 by SEPPIC, by Tego-Care CG90 by Goldschmidt, and by the name Emulgade KE3302 by Henkel ; Arachidyl glucoside, for example in the form of a mixture of arachidyl alcohol and behenyl alcohol, and arachidyl glucoside sold under the name Montanov 202 by the company SEPPIC; Cocoylethylglucoside in the form of a mixture (35/65) with cetyl alcohol and stearyl alcohol, for example sold under the name Montanov 82 by the company SEPPIC; And mixtures thereof.

W / O Emulsifier

In the case of W / O emulsions, hydrocarbon-based or silicone surfactants may be used.

According to one embodiment, hydrocarbon-based surfactants are preferred.

Examples of hydrocarbon-based surfactants that may be mentioned are polyester polyols, for example PEG-30 dipolyhydroxystearate sold under the reference Arlacel P 135 by the company Uniqema, and under the reference Dehymuls PGPH by the Cognis company. Polyglyceryl-2 dipolyhydroxystearate.

Examples of silicone surfactants that may be mentioned are alkyl dimethicone copolyols such as cetyl dimethol sold under the name Abil EM 90 by Goldschmidt and lauryl methicone copolyol sold under the name Dow Corning 5200 Formulation Aid by Dow Corning. Ticon copolyols, or polyglyceryl-4 isostearate / cetyl dimethicone copolyol / hexyl laurate mixtures sold under the name Abil WE 09 by the company Goldschmidt.

One or more emulsifiers may also be added thereto. The co-emulsifier may advantageously be selected from the group comprising polyol alkyl esters. Polyol alkyl esters which may in particular be mentioned are glycerol and / or sorbitan esters, for example polyglyceryl-3 diisostearate, polyglyceryl-4 isostearate, such as sold under the name Lameform TGI by the company Cognis, such as Products sold under the name Isolan GI 34 by Goldschmidt, sorbitan isostearate, such as products sold under the name Arlacel 987 by ICI, sorbitan glyceryl isostearate, such under the name Arlacel 986 by ICI Products, and mixtures thereof.

These compositions are prepared according to conventional methods.

Compositions of this type can be in the form of facial and / or body care or makeup products and can be adjusted, for example, in the form of a cream in a bottle or a fluid in a tube.

The compositions according to the invention can be solid or rather fluid and have the appearance of creams, gels, in particular transparent gels, ointments, milks, lotions, serums, pastes, foams (with or without associated propellant).

According to one embodiment, the composition according to the invention is in the form of a gel, in particular a transparent gel, and comprises 1 to 10% by weight of microcapsules relative to the weight of the composition.

The compositions according to the invention may also be in the form of gels, in particular transparent or translucent gels, which compositions contain from 1 to 10%, preferably from 1 to 5% by weight of microcapsules by weight of the at least one hydrophilic gelling agent and Include.

Preferably, the viscosity of the gel according to the invention is at least 20UD (Mobile 3) by Rheomat at 25 ° C.

Viscosity is generally measured at 25 ° C. with a viscometer RHEOMAT RM 180 with Mobile 3 (mobile selected to have a measurement of 10 to 90 for UD unit deviations) adapted to the viscosity of the product being tested, the measurement being shear 200s-1 After rotating the mobile 10mn inside the composition. The UD value can then be converted to Poise (1 Poise = 0.1 Pa.s) in terms of conversion.

More preferably, the composition contains a gelled aqueous phase.

Hydrophilic gelling agents which may be mentioned include especially water soluble or water dispersible thickening polymers. These polymers may in particular be selected from:

Modified or unmodified carboxyvinyl polymers, such as products sold under the name Carbopol (CTFA name: Carbomer) by the company Goodrich; Polyacrylate

Polymethacrylates such as products sold under the names Lubrajel and Norgel by the Guardian company or products under the name Hispagel by the Hispano Chimica company;

Polyacrylamides; Optionally crosslinked and / or

Neutralized 2-acrylamido-2-methylpropanesulfonic acid polymers and copolymers, for example poly (2-acrylamines) sold under the name Hostacerin AMPS (CTFA name: ammonium polyacryldimethyltauramid) by the company Clariant Fig. 2-methylpropanesulfonic acid);

Crosslinked anionic copolymers of acrylamide and AMPS, in the form of a W / O emulsion, such as the name Sepigel 305 (CTFA name: polyacrylamide / C13-14 isoparaffin / laureth-7) and the name Simulgel by the company SEPPIC. Sold under 600 (CTFA name: acrylamide / sodium acryloyldimethyltaurate copolymer / isohexadecane / polysorbate 80);

Polysaccharide biopolymers such as xanthan gum, guar gum, carob gum, acacia gum, scleroglucan, chitin and chitosan derivatives, carrageenan, gellan, alginate,

Celluloses such as microcrystalline cellulose, carboxymethylcellulose, hydroxymethylcellulose and hydroxypropylcellulose; And mixtures thereof. Preferably, these polymers are acrylate / C10-30 alkyl acrylate crosspolymers such as Carbopol Ultrez 20, Carbopol Ultrez 21, Permulen TR-1, Permulen TR-2, Carbopol 1382, Carbopol ETD 2020 Carbomers such as Synthalen K, carbopol 980, ammonium acryloyldimethyl taurate / steareth-8 methacrylate copolymers such as Aristoflex SNC, acrylate copolymers such as carbopol Aqua SF-1, ammonium acryloyldimethyl Taurate / steareth-25 methacrylate crosspolymers such as Aristoflex HMS, ammonium acryloyldimethyl taurate such as Arisfoflex AVC, and xanthan gum such as Keltrol CG, and also contribute to maintaining proper viscosity and further Anything that manufactures very well and furthermore makes it stable over its shelf life, as well as contributing to its transparency It may be selected from the polymer.

These gelling agents may be present in amounts ranging from 0.001 to 10% by weight, preferably 0.01 to 5% by weight, more preferably 0.05 to 3% by weight, relative to the total weight of the composition.

According to certain embodiments, the aqueous phase of the composition contains one or more neutralized 2-acrylamido-2-methylpropanesulfonic acid polymers and copolymers and one polysaccharide biopolymer.

More preferably the aqueous gel is transparent.

The expression "transparent aqueous medium" means a medium that allows light to pass through without causing deviation by refraction or reflection. The transparency of the aqueous medium can be measured using a turbidimeter. A portable turbidimeter 2100P® model from HACH can be used to measure the range of transparency of the composition, for example. The composition is considered transparent when the measured haze value is 0 to 250 NTU and is translucent when the haze value is 250 to 1000 NTU.

The transparent composition, when placed in front of a 0.01 mm thick black line of 2 mm diameter drawn on a white sheet, reveals this black line, on the contrary, an opaque, ie not transparent composition will not allow it.

The color change composition in the form of a transparent gel according to the invention preferably comprises multilayer microcapsules containing water and releasable colorant (s).

In a first preferred embodiment, the clear gel according to the invention comprises lipid (s) having at least one hydrophilic or lipophilic gelling agent and at least one water soluble emollient (s) and / or a polar moiety.

In a first preferred embodiment, the clear gel according to the invention comprises two or more types of different multilayer microcapsules containing releasable colorant (s).

The transparent gel according to the invention, which is preferably a BB product or foundation, provides a very strong moisturizing feeling, transparency, a clean bulk appearance and a very comfortable feeling during application and a sheer natural makeup result after application. These features help to deliver both skin care efficacy awareness (moisture, moisturizing and transparency) as well as makeup efficacy (adequate coverage).

Advantageously, the transparent gel contains a swelling agent, which allows for better swelling of the microcapsules, making the microcapsules more brittle during application. Water, alcohols, glycol polyols can be used as swelling agents. Examples of swelling agents are disclosed above.

Moisturizing can be further enhanced by the introduction of one or more water soluble emollient (s) and / or lipid (s) with polar moieties. PEG modified silanes and silicones such as bis-PEG-18 methyl ether dimethyl silane, and / or PEG modified esters such as PEG-7 oleate, PEG-7 glyceryl cocoate, PEG-30 glyceryl cocoate, PEG-80 glyceryl Cocoate may be used to enhance moisturizing.

Solubilizers may also be added to maintain the properties of the clear gel upon storage, to dissolve the softener in the water phase, and to make and keep the gel clear and stable during the shelf life. As an example of a solubilizer, mention may be made of polysorbate 20, PEG-60 hydrogenated castor oil.

The transparent gel according to the invention provides a very beautiful, clean and neat appearance and releases the pigment without any grainy feeling during application. After application the makeup results are provided completely and evenly.

Preferred aspects of the clear gel according to the invention include:

Preferably an acrylate / C10-30 alkyl acrylate crosspolymer such as Permulen TR-1, Permulen TR-2, Carbopol 1382, Carbopol ETD 2020 at a concentration of 0 to 10% wgt, more preferably 0 to 2% wgt At least one polymer selected from carbomers such as 0 to 10% wgt, more preferably 0 to 2% wgt, such as Synthalen K, Carbopol 980, preferably 0 to 10% wgt, more preferably Ammonium Acryloyldimethyl Taurate / Steareth-8 Methacrylate Copolymer at 0-2% wgt concentration such as Aristoflex SNC, preferably 0-10% wgt, more preferably 0-2% wgt acrylic Ammonium acryloyldimethyl taurate / steareth-25 methacrylate crosslinking at concentrations such as Carboplol Aqua SF-1, preferably 0-10% wgt, more preferably 0-2% wgt Coalescing such as Aristoflex HMS, preferably ammonium acryloyldimethyl taurate at a concentration of 0 to 10% wgt, more preferably 0 to 4% wgt such as Arisfoflex AVC, and preferably 0 to 10% wgt, more preferably Xanthan gum at a concentration of 0 to 4% wgt such as Keltrol CG.

Moreover, the transparent gel may comprise at least one of the following swelling agents, preferably 0 to 90% wgt, more preferably water at a concentration of 30 to 70% wgt such as demineralized water, preferably 0 to 50% wgt, more preferably 1 to Alcohol at 20% wgt concentration, preferably 0-50% wgt, more preferably glycol at 1-15% wgt concentration, such as propyl glycol, butyl glycol, preferably 0-50% wgt, more preferably 1-1 Polyols such as glycerin, tetraol at a concentration of 10% wgt.

In addition, the clear gel is a bis-PEG-18 methyl ether dimethyl silane, PEG-7 oleate, PEG-7 glyceryl cocoate, PEG-30 glycerine at a concentration of 0-20% wgt, more preferably 0-5% wgt. Reel cocoate, PEG-80 glyceryl cocoate, and one or more solubilizers such as polysorbate 20, PEG-60 hydrogenated castor oil at a concentration of 0-10% wgt, more preferably 1-5% wgt. It may contain one or more water soluble emollients.

Microcapsules at a concentration of 0.1 to 30% wgt, more preferably 1 to 10% wgt such as Magic 60-WP0105, and Magic50-BW0105 from Korea Particle Technology can be introduced with gentle agitation but without side scrapers in the last step after the gel is made.

In the case of a care composition, the composition according to the invention comprises from 0.1% to 5% by weight, preferably from 0.1% to 3% by weight of microcapsules relative to the weight of the composition.

The transparent gel comprising the microcapsules thus obtained has a pure and clean appearance, -20 / 20 ° C (5 cycles), room temperature (25 ° C, 2 months), 37 ° C (2 months) and 45 ° C (2 months) Provides complete stability. Microcapsules release the pigment without any particle feeling during application. After application the makeup results are provided perfectly and evenly.

Transparent gels can also be slightly colored.

In this case, the transparent gel comprises one or more non-capturing colorants in an amount of preferably less than 1% by weight, based on the total weight of the total composition.

The composition may also be in the form of a gel cream, or emulsified gel, comprising an oil and a surfactant.

According to another embodiment, the color changing composition according to the invention is in the form of a foam comprising 1 to 30% by weight of microcapsules relative to the weight of the composition.

The term "composition in the form of a foam" and the term "foam type formulation" mean the same and are understood to mean a composition comprising a gaseous phase (eg air) in the form of drops; Another equivalent term is "volume expanded composition".

In one embodiment, a foam composition is obtained that contains no propellant (non aerosol foam).

In another preferred embodiment, a foam composition comprising a propellant is obtained (aerosol foam).

The composition in the form of foam according to the invention can be obtained from the composition of the invention for use as a "base composition" packaged in a product. Such products, in addition to the base composition, may contain a propellant.

Accordingly, the present invention also relates to a product comprising:

a. A container defining one or more compartments;

b. A composition of the present invention contained in said compartment,

c. A propellant to pressurize said composition inside said compartment; And

d. A dispensing head having an opening that is selectively placed in fluid communication with the compartment for delivering the pressurized composition in foam form.

According to another embodiment, the invention relates to a kit comprising an applicator and one of the products defined above.

The composition in the form of a foam according to the invention is stably formed in the form of a mousse using the composition of the invention and air or an inert gas.

The air or inert gas may comprise in particular 10% to 500%, preferably 20% to 200%, for example 30% to 100% of the volume of the composition in the form of foam.

This volume can be calculated by comparing the density of the base composition and the foam form composition.

In addition to air, gases which allow the composition in the form of bubbles to be obtained are in particular inert gases, for example nitrogen, carbon dioxide, nitrogen oxides, inert gases or mixtures of these gases. If the composition comprises an oxidation-sensitive compound, preference is given to using an oxygen free gas such as nitrogen or carbon dioxide.

The amount of gas introduced into the base composition contributes to adjusting the density of the composition in the form of a foam to a desired value, for example 0.12 g / cm 3 or less.

Foam compositions of the present invention may, for example, have a density of 0.12 g / cm 3 or less, for example 0.02 to 0.11 g / cm 3, preferably 0.06 to 0.10 g / cm 3, which density may be at a temperature of about 20 ° C. and At atmospheric pressure it is measured according to the following protocol.

Density measurement

The test is performed on 50 ml of the composition introduced into a 50 ml polished Plexiglas® Goblet (V ₁ ) defining a 30 mm high cylindrical filling space with a base of 46 mm in diameter. The goblet has a bottom wall 10 mm thick and a side wall 12 mm thick.

Prior to the measurement, the composition and goblet being characterized are maintained at a temperature of about 20 ° C. Weigh the goblet and record the weight value (M ₁ ). The foamed composition is then introduced into the goblet to take up the total volume while avoiding the formation of air bubbles during filling of the goblet. Allow the assembly to stand for 10 seconds to allow the mousse to fully extend. The top of the goblet is then skimmed before weighing (M ₂ ). The density is evaluated according to the convention p = (M ₂ -M ₁ ) / 50.

Stability measurement

The foam form of the composition according to the invention shows satisfactory stability, which can be calculated by measuring the volume of mousse (V ₂ ) remaining in the goblet after 10 minutes according to the protocol described above for the determination of density.

The ratio V ₂ / V ₁ corresponds to the ratio between the volume of the composition in the foam form after 10 minutes and the volume of the composition in the foam form after 10 seconds.

이 0.85 초과, 특히 0.90 초과, 예를 들어 0.95 초과인 거품 형태의 조성물에 적용된다.The expression "satisfied stability" is especially ratio

This applies to compositions in the form of bubbles which are greater than 0.85, in particular greater than 0.90, for example greater than 0.95.

For a certain weight of the composition in the form of a foam, the volume of the composition in the form of a foam is inversely proportional to the density of the composition in the form of a foam. Thus, the ratio between the density of the composition in the foam form measured after 10 seconds and the density of the composition in the foam form measured after 10 minutes may be greater than 0.85, in particular greater than 0.90, for example greater than 0.95.

In the foam form compositions according to the invention, the air pauses can advantageously have a number average size of 20 μm to 500 μm, preferably 100 μm to 300 μm.

The composition in the form of a foam can be obtained from the composition of the present invention in a distributor. Such distributors may be, in addition to the base composition, an aerosol containing a propellant.

Such propellants may comprise less than 20% by weight of the base composition, and in particular may comprise 1% to 10% by weight, for example 2 to 8% by weight, for example at least 5% by weight of the total weight of the base composition. Propellants that may be used may be selected from carbon dioxide, nitrogen, nitrous oxide and volatile hydrocarbons such as butane, isobutane, propane, ethane, pentane, isododecane or isohexadecane, and mixtures thereof.

It may especially be a propane / butane mixture (liquefied petroleum gas or LPG) in a weight ratio [propane / butane] 0.1 to 1, in particular 0.31.

The pressure of the propellant in the aerosol, for example the propane / butane mixture, may be 0.20 to 0.50 MPa, for example 0.20 to 0.40, in particular 0.25 to 0.35 MPa.

Foamed compositions for use in the present invention may be prepared by mixing, stirring or dispersing compressed gas such as air, chlorofluorocarbon compounds, nitrogen, carbon dioxide, oxygen or helium, mixing in the presence of blowing agents such as surfactants and It can be prepared by the process of stirring.

In particular, the composition in the form of a foam is prepared by mixing the components, usually under hot conditions, with stirring, and then expanding the volume under the action of a gas, where the gas is for example a Mondomix type, Kenwood Can be introduced during the cooling phase of the composition or after the preparation of the composition, using a volume expansion device of a beater, a surface scraping exchanger or a dynamic mixer (eg, IMT type). The gas is preferably air or nitrogen.

The composition according to the invention can be packaged in a container that separates one or more compartments containing the composition, where the container is closed by a closure component. The container may be equipped with means for dispensing the product. In particular, the container may be equipped with a pump.

The container may be a pot.

The vessel may be made of at least a portion of thermoplastic material. As examples of thermoplastics, polypropylene or polyethylene can be mentioned. Alternatively, the container is made of a non-thermoplastic material, in particular glass or metal (or alloy).

The composition can be applied, for example, by finger or using an applicator.

The container is preferably used in combination with an applicator comprising one or more application parts configured for applying the composition to the keratin materials.

According to another advantageous embodiment, the applicator comprises an application nozzle.

Foam compositions according to the invention comprise 1 to 30%, preferably 3 to 10% by weight of microcapsules relative to the weight of the composition. The foam obtained is fine (small drops) and contains colored microcapsules. The foam has a white appearance before application on the keratin materials and a colored appearance after application and homogenization on keratin materials, in particular on the skin.

When the foam composition comprises at least 3% by weight of microcapsules by weight of the composition, it preferably comprises fillers and / or pigments such as TiO ₂ , ZnO, CeO, bismuth oxychloride, boron nitride, advantageously TiO ₂ . Include.

The foam composition may also include calcium carbonate (CaCO ₃ ) to avoid coloring of the aqueous phase.

The foam composition according to the invention comprises 1 to 10%, preferably 3 to 8% by weight of filler and / or pigment advantageously TiO ₂ by weight of the composition.

The foam composition according to the invention comprises 0,5 to 5%, preferably 1 to 3% by weight of calcium carbonate relative to the weight of the composition.

To test the stability of the foam, the foam was vigorously shaken (1000 shakes) and the ΔE a, b between the color of the bulk before and after shake was less than 10, preferably less than 5.

According to another embodiment, the color changing composition according to the invention is an oil in water (O / W) emulsion.

Such makeup compositions, preferably facial makeup BB products or foundations, provide a very strong moisturizing feel, a very comfortable feel during application with a creamy texture, and a thin and natural makeup result after application. After application, all these features help to deliver a very good balance of skin care efficacy awareness (creamy and moisturizing) as well as makeup efficacy (adequate coverage and natural sheen). Advantageously, suitable sunscreen may be added.

Such compositions mainly comprise water, one or more nonvolatile oils, one or more O / W emulsifiers and microcapsules.

The nonvolatile oil (s) used in this preferred embodiment are those previously mentioned.

Advantageously the O / W emulsion contains a swelling agent, which allows for better swelling of the microcapsules, making the microcapsules more easily broken during application. Water, alcohols, glycols, polyols can be used as swelling agent .

Preferably the O / W emulsion also contains a emulsifier and / or a solubilizer.

Cetyl alcohol and stearyl alcohol may be mentioned as co-emulsifiers.

Solubilizers may be added to maintain the properties of the O / W emulsion upon storage, in particular to dissolve the components of the aqueous phase and to make and maintain the composition stable over its shelf life. As an example of a solubilizer, mention may be made of polysorbate 20, PEG-60 hydrogenated castor oil.

O / W emulsions are obtained which contain a perfectly stable capsule on storage, where the pigment is released without any particle feel during application. After application the makeup results are provided perfectly and evenly.

Furthermore, the O / W emulsion may contain one or more of the following swelling agents, preferably 0 to 90% wgt, more preferably water at a concentration of 30 to 70% wgt, such as demineralized water, preferably 0 to 50% wgt, more preferably 1 Alcohol at a concentration of from 20% wgt, preferably 0-50% wgt, more preferably glycol at a concentration of 1-15% wgt such as propylene glycol, butylene glycol, preferably 0-50% wgt, more preferably Polyols at concentrations of 1 to 10% wgt such as glycerin, tetraol, preferably 0 to 20% wgt, more preferably oiling agents at concentrations of 1 to 5% wgt such as cetyl alcohol and stearyl alcohol (at high temperatures above 60 ° C. ) And a solubilizer such as PEG-60 hydrogenated castor oil at a concentration of 0 to 10% wgt, more preferably 1 to 5% wgt.

Otherwise, the O / W emulsion may contain two or more different types of microcapsules, for example three different types of microcapsules. Therefore, the makeup result is changed to a natural and radiant appearance, which can additionally convey a kind of white pink makeup and uniform skin tone.

Preferably microcapsules at concentrations from 0 to 30% wgt, more preferably from 0 to 10% wgt such as Magic 60-WP0105 from Korea Particle Technology, and Magic50-BW0105 are gently stirred in the last step after the emulsion is made but side It can be introduced without a scraper.

O / W emulsion with a pure, clean appearance of bulk and perfect stability at -20 / 20 ° C (5 cycles), room temperature (25 ° C, 2 months), 37 ° C (2 months) and 45 ° C (2 months) Can be obtained. However, the capsule will release the pigment without any particle feeling during application. After application the makeup results are provided perfectly and evenly.

Moreover, organic solar filters can be added to the system and provide additional sun care benefits.

Advantageously the O / W emulsion contains at least non-capturing TiO ₂ . Uncaptured TiO ₂ allows a better cover effect.

In particular the composition in the form of an emulsion comprises at least non-capturing TiO ₂ and 1 to 30% by weight of microcapsules relative to the weight of the composition.

Throughout the specification, including the claims, the term "comprising one" should be understood to be used synonymously with "comprising at least one" unless stated otherwise.

The terms "... to ..." and "in ... of ..." should be understood to include their bounds unless stated otherwise.

The invention is illustrated in more detail by the examples according to the invention described below. Unless stated otherwise, the amounts indicated are expressed in mass% of the active substance.

Description of the Drawings

1 is a schematic illustrating a typical structure of color changing microcapsules of the present invention, where A represents a core and B, C, D and E are different layers that concentrically enclose the core.

2 to 10 show schematics representing the core-shell structure of color changing microcapsules prepared according to Examples 6 to 14, respectively, described later in this specification.

Example

I. Microcapsules

Different preparations of the microcapsules according to the invention are described below to illustrate the invention.

Example 1 : Preparation of Microcapsules with Inner Brown Coating and Outer White Coating

Mannitol (spray dried mannitol: Pearitol 100SD) was used as the core.

To a mixed solution of 1600.0 g of methylene chloride and 1600.0 g of ethanol, 120.0 g of ceramide (Ceramide PC 104) and 120.0 g of hydrogenated lecithin (Lipoid S 100-3) were added and completely dissolved at 40 ° C. To the mixture obtained, 1260.0 g of yellow iron oxide, 252.0 g of red iron oxide and 45.36 g of black iron oxide were added and dispersed well using a homogenizer to prepare an inner color coating solution.

347.70 g of mannitol as seed was introduced into the fluidized bed coating system (Glatt GPOG 1, bottom spray), and the inner color coating solution was applied to the coating at a feed rate of 500 ml / h, which was coated with the inner color layer. A particle with a core was obtained.

Thereafter, 36.0 g of ceramide and 36.0 g of hydrogenated lecithin were added to a mixed solution of 720.0 g of methylene chloride and 720.0 g of ethanol and dissolved at 40 ° C. To the mixture obtained, 600.0 g of titanium dioxide particles were added and well dispersed using a homogenizer to prepare a titanium dioxide particle coating solution.

The coating having the obtained titanium dioxide particle coating solution was prepared by a fluidized bed process to obtain particles having an inner color layer coated with a titanium dioxide particle layer.

Thereafter, 300.0 g of shellac was dissolved in 3000 g of ethanol to prepare an outer layer coating solution, which was coated on the titanium dioxide particle layer to give color change microcapsules having a titanium dioxide particle layer coated with the outer layer. Obtained.

Example 2: The action of a microcapsule having an inner coating and an outer yellow white coating

In preparing the internal color coating solution, microcapsules were prepared in the same manner as in Example 1, except that 1557.36 g of yellow iron oxide was used instead of a mixed colorant consisting of yellow iron oxide, red iron oxide, and black iron oxide as the inner color. .

Example 3 : Preparation of Microcapsules with Inner Red Coating and Outer White Coating

In preparing the internal color coating solution, microcapsules were prepared in the same manner as in Example 1, except that 1557.36 g of red iron oxide was used instead of a mixed colorant consisting of yellow iron oxide, red iron oxide and black iron oxide as the inner color. .

Example 4 : Preparation of Microcapsules with Inner Black Coating and Outer White Coating

In preparing the inner color coating solution, the microcapsules were prepared in the same manner as in Example 1, except that 1557.36 g of black iron oxide was used instead of a mixed colorant consisting of yellow iron oxide, red iron oxide and black iron oxide as the inner color. .

Example 5 : Preparation of Microcapsules with Inner Black Coating and Outer Green Coating

In the step for the formation of the titanium dioxide particle layer, the same procedure as in Example 4 was repeated.

Thereafter, 20.0 g of ceramide and 20.0 g of hydrogenated lecithin were added to a mixed solution of 400.0 g of methylene chloride and 400.0 g of ethanol and dissolved at 40 ° C. To the obtained reaction mixture, 40.0 g of green chromium hydroxide (CI77289) was added and well dispersed using a homogenizer to prepare a green coating solution.

The coating with the obtained green coating solution was prepared by a fluidized bed process (feed rate of coating solution 500 ml / h) to obtain particles having a layer of titanium dioxide particles coated with a green layer.

Thereafter, 200.0 g of polymethacrylate (Eudragit RSPO) was dissolved in 4000 g of ethanol to prepare an outer layer coating solution. The obtained outer layer coating solution was prepared by a fluidized bed process (feed rate of coating solution 100 ml / h) to obtain color changing microcapsules with a green layer coated with a polymeric outer layer.

Example 6:

Using the components and contents set forth in the table below, color change microcapsules with a core and two layers, as shown in FIG. 2, were prepared by a fluid bed process:

(1) Mixed Pigment (Inner Color): Yellow: Red: Black = 55.18: 34.48: 10.34

(2) Ingredients: Core seed-inner color layer-TiO ₂ particle layer

Example 7:

Using the components and contents set forth in the table below, color change microcapsules with a core and three layers, as shown in FIG. 3, were prepared by a fluid bed process:

(1) Mixed Pigment (Inner Color): Yellow: Red: Black = 60.4: 23.8: 11.4: 4.4

(2) Ingredients: Core seed-inner color layer-TiO ₂ particle layer-outer color layer

Example 8:

Using the components and contents set forth in the table below, color change microcapsules with a core and two layers, as shown in FIG. 4, were prepared by a fluid bed process:

(1) Mixed Pigment (Inner Color): Yellow: Red: Black = 60.1: 28.8: 11.1

(2) Ingredients: Core seed-inner color layer-TiO ₂ particle layer

Example 9:

Using the components and contents set forth in the table below, color change microcapsules with a core and two layers, as shown in FIG. 5, were prepared by a fluid bed process:

(1) Ingredients: Core seed-inner color layer-TiO ₂ particle layer

Example 10:

Using the components and contents set forth in the table below, color change microcapsules with a core and three layers, as shown in FIG. 6, were prepared by a fluid bed process:

(1) Mixed Pigment (Inner Color): Yellow: Red: Black = 55.18: 34.48: 10.34

(2) Ingredients: Core seed-inner color layer-TiO ₂ particle layer-outer color layer

Example 11:

Using the components and contents set forth in the table below, color change microcapsules with a core and three layers, as shown in FIG. 7, were prepared by a fluid bed process:

(1) Mixed Pigment (Inner Color): White: Yellow: Red = 92: 6: 2

(2) Ingredients: Core seed-inner color layer-TiO ₂ particle layer-outer color layer

Example 12:

Using the components and contents set forth in the table below, color change microcapsules with a core and three layers, as shown in FIG. 8, were prepared by a fluid bed process:

(1) Mixed Pigment (Inner Color): White: Yellow: Red: Black = 89: 2: 8: 1

(2) Ingredients: Core seed-inner color layer-TiO ₂ particle layer-outer color layer

(3) Components of Each Layer (Detailed Description):

Example 13:

Using the components and contents set forth in the table below, color change microcapsules with a core and two layers, as shown in FIG. 9, were prepared by a fluid bed process:

(1) Ingredients: Core seed-white TiO ₂ particle layer-outer color layer

(2) Components of Each Layer (Detailed):

Example 14:

Using the components and contents set forth in the table below, color change microcapsules with a core and three layers, as shown in FIG. 10, were prepared by a fluid bed process:

(1) Mixed Pigment: White: Yellow: Red: Black = 84.3: 5.0: 8.7: 2

(2) Ingredients: Core seed-Inner color layer-TiO ₂ particle layer-Outer shell

II. Composition

In all examples, `` alcohol '' means `` ethanol ''.

If not specified, the protocol used to prepare the composition is a conventional protocol.

Example 1: Foundation

Manufacturing protocol

The aqueous phase (water, butylene glycol, magnesium sulfate) and the fatty phase (silicone surfactant, oil, filler) are prepared separately.

The two phases are then mixed until homogeneous under Moritz shaking.

Bismuth oxychloride dispersed in ethylhexylhydroxystearate is then added until homogeneous under Moritz shaking.

The alcohol is then added under Moritz shake.

Microcapsules are then added until homogeneous under low Rainyri shake.

observe

The composition in the bottle or on the finger has a white pearly appearance and the microcapsules are covered by bismuth oxychloride pre-dispersion.

After application and homogenization on the skin, the composition provides a uniform radiant makeup effect.

Example 2: O / W Latex with Pink Microcapsules

Manufacture Protocol:

1. Mix Phase A1 at 75 ° C

2. Add A2 to A1

3. B3 + B4 Roll Miller

4. Mix B1 + B2 + B3 + B4 at 75 ℃

5. Add phase B to phase A and homogenize (Rayneri 1000 rpm, 10 minutes)

6. Cool to 65 ° C and add phase C, phase D (1800 rpm, 15 minutes)

7. Cool to 45 ° C. and add phase E

8. Change Rayneri to Ekart and, using a small blender, add phase F until the microcapsules are evenly dispersed.

Aspects of the composition and evaluation after application

The obtained O / W emulsion has a whiteish pink color and a care appearance but has a covering effect with a covering when applied to the skin.

O / W emulsion has a pure and clean appearance in the jar and has perfect stability at -20 / 20 ° C (5 cycles), room temperature (25 ° C, 2 months), 37 ° C (2 months) and 45 ° C (2 months) Has Microcapsules release pigments during application to the skin with a comfortable feeling during application and give natural makeup results as much as foundation, but not only skin awareness efficacy (moisture, moisture and transparency) but also makeup efficacy (appropriate cover) Has a very good balance of.

Example 3. Aerosol Foam

a) Manufacturing procedure

1. Mix the powder phase by powder mixer

2. Add mixed powder phase to main kettle

3. Add heated water phase (75-85 ° C) to main kettle

4. Add heated oil phase (75-85 ° C) to main kettle

5. Homogenized in main kettle

6. After mixing, cool to room temperature

7. Add surfactants and flavors to the main kettle

8. Homogenized in main kettle

9. Add microcapsules and mix gently with paddle

10. Finished to make bulk

(Charging process)

11. Pour the bulk into the aerosol package

12.Add LPG (propane / butane mixture (liquefied petroleum gas or LPG) in aerosol package (5%, 0.31 MPa)

The foam obtained with the A-D composition was white and the foam was obtained with composition E, with the particles not significantly visible in bulk.

These all impart a natural skin and makeup effect upon application onto the skin.

Claims (21)

A color changing composition for the care and / or makeup of keratin materials, comprising at least a physiologically acceptable medium, wherein the keratin materials are skin, mucous membranes, lips, nails or eyelashes:
a) microcapsules containing releasable colorant (s),
A core comprising one organic material,
At least one laminate coating surrounding the core,
One or more polymers,
One or more colorants, and
One or more lipid-based substances
Laminated coating comprising
Microcapsules comprising,
b) an aqueous phase comprising at least 3% by weight, based on the weight of the composition, water and at least one compound selected from polyols, glycols and C ₂ -C ₈ monoalcohols, and mixtures thereof, and
c) one or more UV filters,
here,
The core comprises one or more monosaccharide-polyols,
The core does not contain colorants,
The laminated coating of the microcapsules comprises two or more layers of different colors. The method of claim 1 wherein the laminated coating of microcapsules comprises an organic inner layer and one organic outer layer, wherein the microcapsules are not colored, ie the organic outer layer is white or transparent and the organic outer layer is transparent Wherein the visible inner layer is white. The color change composition of claim 1, wherein the microcapsules comprise at least:
A core consisting of a monosaccharide-polyol,
Laminated coatings comprising two or more layers of different colors, and one or more hydrophilic polymers. The color change composition of claim 1 comprising at least 0.1% to 20% by weight of microcapsules relative to the total weight of the composition. The UV filter of claim 1 wherein the UV filter is selected from aminobenzoic acid derivatives, dibenzoylmethane derivatives, salicylic acid derivatives, cinnamic derivatives, beta, beta-diphenyl acrylate derivatives, benzophenone derivatives, benzylidene camphor derivatives, and mixtures thereof Color changing composition. The color change composition of claim 1, wherein the UV filter is benzylidene camphor and derivatives. The color change composition of claim 1 containing at least one polyol having 2 to 20 carbon atoms. The color change composition of claim 1 comprising 12% to 50% by weight of polyol (s), based on the weight of the composition. The color change composition of claim 1, further comprising an active agent selected from anti-wrinkle agents, vitamins, humectants, releasing agents, anti-aging actives, bleaches, antioxidants. The color changing composition of claim 1, comprising from 0.1% to 5% by weight of microcapsules relative to the total weight of the composition in a physiologically acceptable medium. The color change composition of claim 1, wherein the microcapsules have a size in the range of 50 μm to 800 μm in diameter and include:
i) a core (A) comprising at least one monosaccharide-polyol; And a laminate coating surrounding the core, comprising: ii) one first layer (B) and iii) one second layer (C),
The first layer (B) surrounding the core is
At least one colorant, and
A binder selected from one or more polymers, one or more lipid-based materials, and mixtures thereof
Including,
The second layer (C) surrounding the first layer (B)
Titanium dioxide particles, and
A binder selected from one or more polymers, one or more lipid-based materials, and mixtures thereof
Comprising a color changing composition. The color changing composition of claim 1 comprising water in an amount of at least 30% by weight relative to the total weight of the composition. The color change composition of claim 1, wherein at least one layer of microcapsules is obtained by a fluid bed process. A cosmetic method for the care and / or makeup of keratin materials, wherein the keratin materials are skin, mucous membranes, lips, nails or eyelashes, comprising applying a color changing composition as defined in claim 1 onto said keratin materials. How to make up. delete delete delete delete delete delete delete

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