FR3118706A1 - BIPHASIC COMPOSITION FOR CLEANSING AND/OR MAKE-UP REMOVAL OF KERATINOUS MATERIALS - Google Patents

Abstract

BIPHASIC COMPOSITION FOR CLEANING AND/OR REMOVING KERATINOUS MATERIALS The present invention relates to a biphasic composition for cleansing and/or removing make-up from keratinous materials consisting of an aqueous phase and an oily phase which are separated, the composition comprising: a) at least one branched alkane containing 8 to 18 carbon atoms; b) at least one demixing agent of formula (I) in which : R represents a linear alkyl having 12 to 16 carbon atoms, R1 and R2 independently represent a C1-C4 alkyl group, Q- represents an anionic counterion, particularly a halide such as chloride; c) at least one chelating agent chosen from aminocarboxylic acids and their salts, and d) at least one nonionic surfactant chosen from polycondensates of ethylene oxide and propylene oxide, in which the composition is free of silicone. The present invention also relates to a process for cleaning and/or removing make-up from keratinous materials, in particular the skin, comprising shaking the composition according to the present invention to form an emulsion, applying the emulsion to the keratinous materials, in particular the skin, and rinsing said composition after an optional duration. Figure for abstract: NIL

Description

BIPHASIC COMPOSITION FOR CLEANSING AND/OR MAKE-UP REMOVAL OF KERATINOUS MATERIALS

The present invention relates to a cosmetic composition, in particular a two-phase composition for cleaning and/or removing make-up from keratinous materials. The present invention also relates to a process for cleaning and/or removing make-up from keratinous materials using said composition.

CONTEXT ART

Cleansing the skin or removing makeup from the skin is very important for taking care of the skin. It must be as effective as possible because greasy residues, such as excess sebum, remains of cosmetic products used daily and makeup products, especially water-resistant products, accumulate in the folds of the skin and can clog the pores of the skin and lead to the appearance of spots.

Several types of skin cleansing or make-up removal products are known, for example rinsable anhydrous oils and gels, foaming creams and lotions, as well as biphasic make-up removers.

Compositions composed of two distinct phases, in particular an aqueous phase and a fatty phase which are separated, are generally referred to as “biphasic compositions”. Biphasic compositions appeal to consumers because of their pearly appearance. The two phases are separated at rest by a single interface.

The use, in the biphasic compositions, of silicone oils such as cyclopentasiloxane, for example, in a suitable quantity, can make it possible to obtain biphasic compositions consisting of two separate immiscible phases which form, after shaking, an emulsion, while maintaining the properties desired for biphasic compositions, namely rapid phase separation into two transparent phases.

Document US 5,468,496 discloses a biphasic cosmetic or dermatological composition comprising cyclomethicone in oil form and alkyldimethylbenzyl ammonium chloride and a surfactant in aqueous phase. The composition can be easily mixed and complete separation can be accomplished.

In addition, consumers are increasingly looking for cosmetic products formed from natural constituents or of natural origin, in particular products that do not include any volatile silicone compounds.

Those skilled in the art have endeavored to develop “silicone-free” biphasic make-up removers. For example, he tried to use a branched alkane, for example isododecane, instead of silicone oil. However, the mixing and separation of the two phases of biphasic products containing a branched alkane is difficult, even in the presence of a demixing agent such as alkyldimethylammonium chloride, and there will be droplets on the inside wall of the containers of the biphasic products.

There is therefore a need to formulate biphasic makeup-removing products free of silicone, which are easy to form into an emulsion by shaking them and demonstrate good makeup-removal capacity, the two phases being able to begin to separate quickly and completely, at the same time as there are no droplets on the inner wall of the corresponding containers and no greasy feeling during application.

The inventors have found that such a need can be satisfied by the present invention.

Thus, according to one aspect, the present invention provides a biphasic composition for cleaning and/or removing make-up from keratinous materials consisting of an aqueous phase and an oily phase which are separated, the composition comprising:

a) at least one branched alkane containing from 8 to 18 carbon atoms;

b) at least one demixing agent of formula (I)

in which :

R represents a linear alkyl having from 12 to 16 carbon atoms,

R¹ and R²independently represent a C-alkyl group₁-VS₄,

Q ^- represents an anionic counterion, in particular a halide such as chloride;

c) at least one chelating agent chosen from aminocarboxylic acids and their salts, and

d) at least one nonionic surfactant chosen from polycondensates of ethylene oxide and propylene oxide,

wherein the composition is free of silicone.

The composition according to the present invention is easy to form into an emulsion by shaking, for example after gentle shaking for 10 times.

The composition according to the present invention can demonstrate good make-up removal capacity, in particular for water-resistant products, for example lipsticks, mascaras, liners and water-resistant foundations.

The composition according to the present invention can begin to separate into two phases after one minute of waiting, and a clear aqueous phase, a clear oil phase and a clear interface between the aqueous phase and the oil phase can be observed within 24 hours. after standing still, even after being subjected to a 5-day cycle of shaking every 24 hours, meanwhile, there are no droplets on the inner wall of the containers for this purpose.

In addition, the composition according to the present invention also offers a good skin finish (i.e. a feeling of freshness) after application.

The composition according to the present invention can be used to cleanse and/or remove make-up from keratinous materials, in particular the skin, in particular the face, the lips and/or the eyes.

According to another aspect, the present invention proposes a process for cleansing and/or removing make-up from keratinous materials, in particular the skin, comprising shaking the composition according to the present invention to form an emulsion, applying the emulsion on keratinous materials, in particular the skin, and rinsing said composition after an optional period.

Other subjects and characteristics, aspects and advantages of the invention will appear even more clearly on reading the description and the examples which follow.

DETAILED DESCRIPTION OF THE INVENTION

Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Where the definition of a term in this description conflicts with the meaning commonly understood by one of ordinary skill in the art to which this invention belongs, the definition described in this description shall apply.

In what follows and unless otherwise indicated, the limits of a range of values are included in this range, in particular in the expressions "between ... and ..." and "ranging from ... to ..." .

In addition, the expression "at least one" used in the present description is equivalent to the expression "one or more".

In the present application, the term "comprising" is to be interpreted as including all specifically mentioned features as well as optional, additional and unspecified features. As used herein, the term "comprising" also discloses the embodiment in which no features other than those specifically mentioned are present (i.e., "consisting of").

Unless otherwise indicated, all numerical values expressing the quantity of ingredients and the like which are used in the description and the claims must be understood as being modified by the term "about". Accordingly, unless otherwise stated, the numerical values and parameters described here are approximate values which can be modified according to the desired objective, if necessary.

For the purposes of the present invention, the term "keratinous material" is intended to cover human skin. The face, the lips and the eyes are more particularly considered according to the present invention.

By "a water phase and an oil phase which are separated", it is meant that the water phase and the oil phase are visible one above the other before being shaken. The two phases can be colored or not.

By “silicone-free”, it is meant that the silicone content of the composition is less than 2% by weight, relative to the total weight of the composition, preferably the composition does not comprise silicone.

All percentages herein refer to weight percent unless otherwise specified.

According to one aspect, the present invention relates to a biphasic composition for cleaning and/or removing make-up from keratinous materials consisting of an aqueous phase and an oily phase which are separated, the composition comprising:

a) at least one branched alkane containing from 8 to 18 carbon atoms;

b) at least one demixing agent of formula (I)

in which :

R represents a linear alkyl having from 12 to 16 carbon atoms,

R ¹ and R ² independently represent a C ₁ -C ₄ alkyl group;

Q ^- represents an anionic counterion, in particular a halide such as chloride;

c) at least one chelating agent chosen from aminocarboxylic acids and their salts, and

d) at least one nonionic surfactant chosen from polycondensates of ethylene oxide and propylene oxide,

wherein the composition is free of silicone.

branched alkane

The composition according to the invention comprises at least one branched alkane comprising from 8 to 18 carbon atoms.

Examples of branched alkanes comprising from 8 to 18 carbon atoms include 2,2,4-trimethylpentane, isooctane, isononane, isodecane, isoundecane, isodododecane, isotridecane , isotetradecane, isopentadecane, isohexadecane, isoheptadecane, isooctadecane.

Among the commercial products of branched alkane(s) comprising from 8 to 18 carbon atoms, mention may be made of the isoparaffins sold under the trade name Isopar by the company Exxon Chemical or the oils sold under the trade name Permethyl by the company Presperse, and isohexadecane and isododecane sold by company Ineos.

The branched alkane can be chosen from isooctane, isononane, isodecane, isoundecane, isododecane, isotridecane, isotetradecane, isopentadecane, isohexadecane, isoheptadecane, isooctadecane and mixtures thereof.

Preferably, the branched alkane comprises from 12 to 16 carbon atoms.

Preferably, the composition according to the invention comprises the branched alkane as sole oil.

Preferably, the composition according to the invention comprises a combination of isododecane and isohexadecane.

Preferably, the composition according to the invention comprises a combination of isododecane and isohexadecane as sole oils.

Preferably, the composition according to the invention comprises, as sole oils, a combination of isododecane and isohexadecane in a ratio by weight of 30:70 to 70:30, preferably of 40:60 to 60:40.

Preferably, the composition according to the invention comprises isohexadecane as sole oil.

Advantageously, the branched alkane(s) comprising from 8 to 18 carbon atoms are present in an amount ranging from 10% to 90% by weight, preferably from 30% to 70% by weight, relative to the total weight of the composition.

Demixing agent

The composition according to the present invention comprises at least one demixing agent chosen from alkyldimethylbenzylammonium chloride of formula (I):

in which :

R represents a linear alkyl essentially having 12 to 16 carbon atoms,

R ¹ and R ² independently represent a C ₁ -C ₄ alkyl group,

Q ^- represents an anionic counterion, in particular a halide such as chloride.

Preferably, the demixing agent used in the composition according to the present invention is chosen from lauryldimethylbenzylammonium chloride, tridecyldimethylbenzylammonium chloride, myristyldimethylbenzylammonium chloride, pentadecyldimethylbenzylammonium chloride, palmityldimethylbenzylammonium chloride and mixtures thereof.

Preferably, the demixing agent used in the composition according to the present invention is a mixture of alkyldimethylbenzylammonium chloride of formula (I) comprising lauryldimethylbenzylammonium chloride, myristyldimethylbenzylammonium chloride and palmityldimethylbenzylammonium chloride.

More preferably, the demixing agent used in the composition according to the present invention is a mixture of alkyldimethylbenzylammonium chloride of formula (I) comprising 50-70% by weight of lauryldimethylbenzylammonium chloride, 15-30% by weight of myristyldimethylbenzylammonium chloride and 5-10% by weight of palmityldimethylbenzylammonium chloride, based on the total weight of the mixture.

Most preferably, the demixing agent used in the composition according to the present invention is a mixture of alkyldimethylbenzylammonium chlorides of formula (I) consisting of approximately 65% by weight of lauryldimethylbenzylammonium chloride, approximately 23% by weight of palmityldimethylbenzylammonium chloride and approximately 8% by weight of palmityldimethylbenzylammonium chloride, the balance consisting of at least one alkyldimethylammonium chloride in which the radical has less than 12 or more than 16 carbon atoms.

As a mixture of alkyldimethylbenzylammonium chlorides which can be used according to the invention, mention may be made of that marketed under the name “benzalkonium chloride” by the company SIGMA ALDRICH, whose characteristics are as follows:

Molecular weight: 360

Melting point: 35°C.

Advantageously, the demixing agent chosen from alkyldimethylbenzylammonium chloride of formula (I) is present in an amount ranging from 0.005% by weight to 0.1% by weight, preferably from 0.01% by weight to 0, 05% by weight, based on the total weight of the composition.

Chelating agent

The composition according to the present invention comprises at least one chelating agent chosen from aminocarboxylic acids and their salts.

The salts include alkali metal, alkaline earth metal, ammonium and substituted ammonium salts.

The chelating agents can be chosen in particular from the compounds with the following INCI name:

diethylenetriaminepentaacetic acid (DTPA),

ethylenediaminedisuccinic acid (EDDS) and trisodium ethylenediamine disuccinate such as Octaquest E30 from INNOSPEC ACTIVE CHEMICALS,

ethylenediaminetetraacetic acid(EDTA),

ethylenediamine-N, N'-diglutaric acid (EDDG),

glycinamide-N,N'-disuccinic acid (GADS),

2-hydroxypropylenediamine-N,N'-disuccinic acid (HPDDS),

ethylenediamine-N,N'-bis (ortho-hydroxyphenylacetic acid) (EDDHA),

N,N'-bis(2-hydroxybenzyl)ethylenediamine-N,N'-diacetic acid (HBED),

nitrilotriacetic acid (NTA),

methylglycine diacetic acid (MGDA),

N-2-hydroxyethyl-N,N-diacetic acid and glyceryl imino diacetic acid (as described in documents EP-A-317 542 and EP-A-399 133),

iminodiacetic acid-N-2-hydroxypropyl sulfonic acid and aspartic acid N-carboxymethyl N-2-hydroxypropyl-3-sulfonic acid (as described in EP-A-516 102),

beta-alanine-N,N'-diacetic acid, aspartic acid-N,N'-diacetic acid and aspartic acid-N-monoacetic acid (described in EP-A-509 382),

chelating agents based on iminodisuccinic acid (IDSA) (as described in EP-A-509 382),

ethanoldiglycine acid, and

tetrasodium glutamate diacetate (GLDA) such as Dissolvine GL38 or 45S from Akzo Nobel.

Among the chelating agents mentioned, ethylenediaminetetraacetic acid (EDTA), diethylenetriaminepentaacetic acid (DTPA), S,S'-ethylenediaminedisuccinic acid (EDDS), trisodium ethylenediaminedisuccinate, ethylenediaminetetramethylenephosphonic acid ( EDTMP) and tetrasodium glutamate diacetate (GLDA), as well as mixtures thereof, are preferably used.

Advantageously, the sequestrant is present in an amount ranging from 0.001% to 1% by weight, preferably from 0.005% to 0.5% by weight, and more preferably from 0.01% to 0.1% by weight, based on the total weight of the composition.

Nonionic surfactant

The composition according to the present invention comprises at least one nonionic surfactant chosen from polycondensates of ethylene oxide and of propylene oxide.

The polycondensate of ethylene oxide and propylene oxide is in the aqueous phase.

The polycondensate is more specifically a copolymer consisting of polyethylene glycol and polypropylene glycol blocks, such as, for example, polyethylene glycol/polypropylene glycol/polyethylene glycol triblock polycondensates. These triblock polycondensates correspond, for example, to the chemical structure of formula (II):

H-(O-CH ₂ -CH ₂ )a-(O-CH(CH ₃ )-CH ₂ )b-(O-CH ₂ -CH ₂ )a-OH (II)

in which

a goes from 2 to 150, and b from 1 to 100.

Preferably, in formula (II), a ranges from 10 to 130 and b ranges from 20 to 80.

The polycondensate of ethylene oxide and propylene oxide preferably has an average molecular weight ranging from 1,000 to 15,000 g/mol, and more preferably ranging from 1,500 to 10,000 g/mol, and in particular ranging from 1500 to 8000 g/mol, and even more preferably ranging from 1500 to 5000 g/mol.

As polycondensate of ethylene oxide and propylene oxide which can be used according to the present invention, mention may be made of the triblock polycondensates polyethylene glycol/polypropylene glycol/polyethylene glycol sold under the names “SYNPERONIC” such as “SYNPERONIC ^® PE/F32” (INCI name: POLOXAMER 108), “SYNPERONIC ^® PE/F108” (INCI name: POLOXAMER 338), “SYNPERONIC ^® PE/L44” (INCI name: POLOXAMER 124), “SYNPERONIC ^® PE/L42” (INCI name: POLOXAMER 122), "SYNPERONIC ^® PE/F127" (INCI name: POLOXAMER 407), "SYNPERONIC ^® PE/F88" (INCI name: POLOXAMER 238), "SYNPERONIC ^® PE/L 62" (INCI name: POLOXAMER 182), “ ^SYNPERONIC® PE/L64” (INCI name: POLOXAMER 184) by the company CRODA, or “ ^LUTROL® F68” (INCI name: POLOXAMER 188) by the company BASF.

Of the poloxamers, POLOXAMER 184 is preferred.

Advantageously, the nonionic surfactant chosen from polycondensates of ethylene oxide and propylene oxide is present in the composition according to the present invention in an amount ranging from 0.001% by weight to 1.0% by weight, preferably from 0.005% by weight to 0.5% by weight, more preferably from 0.01% by weight to 0.1% by weight, based on the total weight of the composition.

The inventors have found that with the combination of a demixing agent of formula (I), a chelating agent chosen from aminocarboxylic acids and their salts, and a nonionic surfactant chosen from oxide polycondensates of ethylene and propylene oxide, a complete separation of the water phase and the oil phase can be achieved, a clear water phase, a clear oil phase, and a clean interface between the water phase and the oil phase can be observed within 24 hours after immobilization.

Aqueous phase

The composition of the present invention comprises an aqueous phase.

The aqueous phase of the composition according to the present invention comprises water and optionally one or more compounds that are miscible or at least partially miscible with water, for example C ₂ -C ₈ polyols or monoalcohols, such as ethanol and isopropanol.

The term "polyol" should be understood as meaning any organic molecule comprising at least two free hydroxyl groups. Examples of polyols which may be mentioned include glycols, e.g. butylene glycol, propylene glycol, dipropylene glycol, isoprene glycol, hexylene glycol, caprylyl glycol, glycerol (i.e. glycerin) and polyethylene glycols.

The aqueous phase can represent from 10% to 90% by weight, preferably from 30% to 70% by weight, relative to the total weight of the composition.

Oil phase

The composition of the present invention comprises an oily phase.

The composition according to the present invention may also comprise at least one additional non-silicone oil other than branched alkanes comprising from 8 to 18 carbon atoms.

The additional non-silicone oil(s) can be chosen from volatile or non-volatile hydrocarbon-based oils other than branched alkanes comprising from 8 to 18 carbon atoms.

The expression "hydrocarbon-based oil" denotes an oil formed essentially of carbon and hydrogen atoms, and optionally of oxygen and nitrogen atoms, and not containing silicon or fluorine; it may contain ester, ether, amine or amide groups.

The term “volatile” designates a compound which can evaporate on contact with the skin in less than one hour, at room temperature and at atmospheric pressure. The volatile oil is a volatile cosmetic oil, which is liquid at ambient temperature, in particular having a non-zero vapor pressure, at ambient temperature and at atmospheric pressure, in particular having a vapor pressure range ranging from 0.13 Pa to 40,000 Pa (10 ^-3 to 300 mmHg), preferably ranging from 1.3 Pa to 13,000 Pa (0.01 to 100 mmHg) and preferably ranging from 1.3 Pa to 1300 Pa (0.01 to 10 mmHg ).

Examples of non-silicone oils that can enter into the composition of the invention include:

- hydrocarbon-based oils of vegetable origin, such as perhydrosqualene, liquid triglycerides of fatty acids comprising from 4 to 10 carbon atoms, such as triglycerides of heptanoic or octanoic acids, or, for example, oil sunflower oil, corn oil, soybean oil, marrow oil, grapeseed oil, sesame oil, hazelnut oil, apricot kernel oil, macadamia oil, arara oil, coriander oil, oil castor oil, avocado oil, caprylic/capric acid triglycerides, such as those sold by the company Stearineries Dubois or those sold under the names Miglyol 810, 812 and 818 by the company Dynamit Nobel, jojoba oil and butter oil shea;

- synthetic esters and ethers, in particular of fatty acids and/or fatty alcohols, for example the oils of formulas R ₁ COOR ₂ and R ₁ OR ₂ in which R ₁ represents a fatty acid residue containing from 7 to 29 carbon atoms and R ₂ represents a linear or branched hydrocarbon-based chain containing 3 to 30 carbon atoms, for example purcellin oil, isononyl isononanoate, isopropyl myristate, palmitate isopropyl, 2-ethylhexyl palmitate, 2-octyldodecyl stearate, isocetyl stearate, 2-octyldodecyl eructate or isostearyl isostearate; hydroxy esters, for example isostearyl lactate, octyl hydroxystearate, octyldodecyl hydroxystearate, diisostearyl malate, triisocetyl citrate, and fatty alkyl heptanoates, octanoates and decanoates; polyol esters, for example propylene glycol dioctanoate, neopentyl glycol diheptanoate and diethylene glycol diisononanoate; and pentaerythritol esters, for example pentaerythrityl tetraisostearate;

- volatile or non-volatile, linear or branched hydrocarbons, of mineral or synthetic origin, and their derivatives, other than branched alkanes comprising from 8 to 18 carbon atoms, such as liquid petroleum jelly and hydrogenated polyisobutene such as Parleam® Oil; volatile linear alkanes comprising from 7 to 17 carbon atoms, such as undecane or tridecane;

- fatty alcohols which are liquid at room temperature, containing 8 to 26 carbon atoms, for example octyldodecanol, 2-butyloctanol, 2-hexyldecanol, 2-undecylpentadecanol or oleyl alcohol.

Preferably, the composition comprises at least one additional non-silicone oil chosen from the following hydrocarbon-based oils: esters of fatty acids comprising from 8 to 30 carbon atoms, such as isodecyl neopentanoate, myristate d isopropyl, isopropyl palmitate, 2-ethylhexyl palmitate, 2-octyldodecyl stearate or isocetyl stearate; linear hydrocarbons such as Parleam® oil and liquid petroleum jelly, volatile linear alkanes with 7 to 17 carbon atoms such as undecane or tridecane. Among the volatile linear alkanes comprising from 7 to 17 carbon atoms, in particular from 9 to 15 carbon atoms and more particularly from 11 to 13 carbon atoms, mention may be made of alkanes such as those which are described in patent applications Cognis WO 2007/068371 or WO 2008/155059 (mixtures of different alkanes which differ by at least one carbon). These alkanes are obtained from fatty alcohols, themselves obtained from coconut oil or palm oil.

Examples of linear alkanes suitable for use in the invention include n-heptane (C7), n-octane (C8), n-nonane (C9), n-decane (C ₁₀ ) , n-undecane (C ₁ 1), n-dodecane (C ₁ 2), n-tridecane (C ₁ 3) and n-tetradecane (C ₁ 4), as well as their mixtures. According to a particular embodiment, the volatile linear alkane is chosen from n-nonane, n-undecane, n-dodecane, n-tridecane and n-tetradecane, and mixtures thereof.

In some embodiments, the composition of the present invention does not include additional non-silicone oil. In these embodiments, the composition only comprises oils chosen from branched alkanes comprising from 8 to 18 carbon atoms, alone or as a mixture.

In some embodiments, the composition of the present invention includes an ether or a linear alkane to improve skin feel.

In the composition of the invention, all oils combined, the total quantity of oil(s) can range from 10% to 90% by weight and preferably from 30% to 70% by weight, relative to the total weight of the composition. .

The oil phase may include additional ingredients rather than the oil or oils, as mentioned later.

Advantageously, the oily phase represents from 10% to 90% by weight, and preferably from 30% to 70% by weight, relative to the total weight of the composition.

Additional ingredients

The composition according to the present invention may comprise one or more additional ingredients, selected from those traditionally used in skin care cleansers.

The composition according to the present invention may comprise, in the oily phase and/or the aqueous phase, an additional ingredient chosen from pH correction agents (for example, potassium phosphate and dipotassium phosphate), additional surfactants, preservatives (eg, hydroxyacetophenone, chlorphenesin), fragrances (eg, perfumes, essential oils), tear osmotic pressure adjusting agents (eg, sodium chloride), colorant (eg copper derivatives such as copper sulphate) and thickeners.

Preferably, the composition according to the present invention does not comprise a cationic preservative and a cationic surfactant.

A person skilled in the art can adjust the type and amount of additional ingredients present in the compositions according to the present invention by means of routine operations, so that the desired properties of these compositions are not affected by the additional ingredients. .

According to a preferred embodiment, the present invention provides a biphasic composition for cleaning and/or removing make-up from keratinous materials consisting of an aqueous phase and an oily phase which are separated, the composition comprising, based on the total weight of the composition:

a) from 30% to 70% by weight of at least one branched alkane containing 12 to 16 carbon atoms;

b) from 0.01% to 0.05% by weight of at least one demixing agent of formula (I)

in which :

R represents a linear alkyl having from 12 to 16 carbon atoms,

R ¹ and R ² independently represent a C ₁ -C ₄ alkyl group,

Q ^- represents chloride;

c) from 0.01% by weight to 0.1% by weight of at least one chelating agent chosen from ethylenediaminetetraacetic acid (EDTA), diethylenetriaminepentaacetic acid (DTPA), S,S' -ethylenediamine-disuccinic acid (EDDS), trisodium ethylenediamine disuccinate, ethylenediaminetetramethylenephosphonic acid (EDTMP) and tetrasodium glutamate diacetate (GLDA), and mixtures thereof; And

d) from 0.01% to 0.1% by weight of at least one nonionic surfactant chosen from polyethylene glycol/polypropylene glycol/polyethylene glycol triblock polycondensates having the chemical structure of formula (II):

H-(O-CH ₂ -CH ₂ )a-(O-CH(CH ₃ )-CH ₂ )b-(O-CH ₂ -CH ₂ )a-OH (II)

where a ranges from 10 to 130 and b ranges from 20 to 80,

wherein the composition is free of silicone.

Dosage forms and use

The composition according to the present invention can be packaged, in known manner, in a bottle with a single compartment. The user must shake the bottle before pouring its contents onto a cotton ball. The composition can also be packaged in a bottle of the “pump bottle” type.

The composition according to the present invention can be used for cleaning and/or removing make-up from keratinous materials, in particular the skin, in particular the face, the lips and/or the eyes.

It can be used as a daily facial cleanser and/or make-up remover. The composition of the present invention is a rinse-off product. So, such a composition can be applied to the skin (for example, face, lips, eyes), and then rinsed off with rinsing water.

Thus, according to another aspect, the present invention proposes a process for cleansing and/or removing make-up from keratinous materials, in particular the skin, comprising shaking the composition according to the present invention to form an emulsion, applying the emulsion on keratinous materials, in particular the skin, and rinsing said composition after an optional period.

It has been found that the composition according to the present invention is easy to form into an emulsion by shaking it, for example after gentle shaking for 10 times.

The composition according to the present invention can demonstrate good make-up removal capacity, in particular for water-resistant products, for example lipsticks, mascaras, liners and water-resistant foundations.

The composition according to the present invention can begin to separate into two phases after one minute of immobility, and a clear aqueous phase, a clear oil phase and a clear interface between the aqueous phase and the oil phase can be observed within 24 hours. after standing still, even after being subjected to a 5-day cycle of shaking every 24 hours, meanwhile, there are no droplets on the inner wall of the containers.

In addition, the composition according to the present invention also makes it possible to obtain a good finish of the skin (that is to say no greasy feeling) after the application.

The present invention is illustrated in more detail by the examples described below, which are given by way of non-limiting illustrations.

EXAMPLES

The main raw materials used, trade names and their suppliers are listed in Table 1.

INCI name Trade name Supplier BENZALKONIUM CHLORIDE 12060 BENZALKONIUM CHLORIDE SIGMA ALDRICH ISOHEXADECANE ISOHEXADECANE INEOS ISODODECANE ISODODECANE INEOS TRISODIUM ETHYLENEDIAMINE DISUCCINATE NATRLQUEST E30 INNOSPEC ACTIVE CHEMICALS POLOXAMER 184 SYNPERONIC™ PE/L 64-NAA-LQ-(CQ) CRODA CYCLOPENTASILOXANE SERASENSE SF CM5 KCC CORPORATION

Comparative Examples 1-6 and Example 1 d he ' invention

The compositions of Inventive Examples 1 (EI.) and Comparative Examples (EC.) 1-6 were prepared according to the amounts given in Table 2. The amount of each component is given in % by weight of the total weight of the phase that contains it.

Preparation process

The compositions were prepared as follows, taking as an example the composition according to Example 1 of the invention.

First, the oily phase and the aqueous phase were prepared separately.

oily phase :

Mixture of isododecane and isohexadecane at room temperature for 1 hour with a propeller to obtain the oily phase;

aqueous phase :

1). Mixture of trisodium ethylenediamine disuccinate, benzalkonium chloride and others such as a pH buffer (potassium phosphate and dipotassium phosphate), sodium chloride and a colorant such as copper sulphate with water at 45°C and agitation for 20 minutes with a propeller;

2). Adding perfume with Poloxer 184 and hexylene glycol to the mixture obtained in step 1) and stirring for 10 minutes with a propeller to obtain the aqueous phase.

Then, the oil phase and the water phase were combined together at a weight ratio of W/O=60:40 in a PET package to obtain the biphasic composition.

Evaluation of compositions

The compositions prepared were evaluated.

Ease of mixing

The test was conducted by observing the appearance of the composition under test just after being gently shaken upside down 10 times and then rated according to appearance.

Quoting Aspect Good homogeneous / fine emulsion Acceptable inhomogeneous / coarse emulsion Bad inhomogeneous after strong shaking

Make-up removal ability

The test was performed as follows:

1. Apply make-up on a forearm according to the following standards:

a) a 5 cm line for the following water-resistant products:

a water-resistant mascara sold under the name Hyper Curl Volume Express from Maybelline,

a liner sold under the name Hyper Sharp Liner from Maybelline,

a long-lasting lipstick sold under the name SUPERSTAY matte ink from the company Maybelline;

b) 0.05 g of a water-resistant foundation sold under the name FIT ME Matte from the company Maybelline in a 2 cm x 5 cm rectangle;

2. After air-drying for 15 minutes, cover the make-ups with a cotton pad moistened with 2g of the composition under test for 5 seconds, then wipe off.

3. Count how many times you have to wipe for the make-up to be removed to be completely removed.

4. Rate the removal capacity according to the wiping times necessary for the make-up to be removed to be completely removed according to the following standards.

Quoting Wiping time Very good 1-5 Good 6-10 normal 11-15 Bad 16-20 Very bad 20-25

Feeling on the skin (oily character)

Skin feel was assessed by the 6 volunteers following the same makeup removal test and skin feel scoring process as follows.

Quoting Feel on the skin Very good a feeling of freshness Good a feeling of relative freshness normal a normal, non-greasy, non-fresh feeling Bad A relative greasy feeling Very bad very greasy feeling

Interface between the oily phase and the aqueous phase

The composition being tested was gently shaken until the oil and water phases were well mixed, then the mixed composition remained still for 24 hours, after which the interface of the two phases was observed and noted as follows. This procedure was repeated 5 times, then the interface of the two phases was observed and scored as follows.

Quoting Interface Very good No bubble, a movie-like interface Good Almost no bubble, a film-like interface Acceptable Bubble visible but small, a movie-like interface Bad A thin layer interface

Aspect of the inner wall of the container after 24 hours of immobility

The inner wall of the container containing the composition under test was observed when the entire package was immobile for 24 hours and was rated as follows.

Quoting Appearance of the inner wall of the container Very good No droplet/line in the air/oil/aqueous phase/inner wall Good Very small droplet / line in the air / oil / aqueous phase / inner wall Acceptable Visible but small droplet/line in the air/oil/aqueous phase/inner wall Bad Large droplet/line in the air/oil/aqueous phase/inner wall

The results of the assessments have been summarized in Table 2.

D5=CYCLOPENTASILOXANE, IHD=ISOHEXADECANE, IDD=ISODODECANE.

It has been found that the composition of formula 1 of the invention is easy to emulsify by shaking and demonstrates good make-up removal capacity.

In addition, the composition of formula 1 also makes it possible to obtain a good skin finish (i.e. a feeling of freshness) after application.

It has been found that the composition of Formula 1 of the invention can begin to separate into two phases after one minute of immobility, and that a clear aqueous phase, a clear oil phase and the sharp interface can be observed. within 24 hours after standing still, even after being subjected to a 5-day cycle of shaking every 24 hours, and at the same time that there are no droplets on the inside wall of the containers to this effect.

Claims (10)

Biphasic composition for cleaning and/or removing make-up from keratinous materials, consisting of an aqueous phase and an oily phase which are separated, the composition comprising:
a) at least one branched alkane containing from 8 to 18 carbon atoms;
b) at least one demixing agent of formula (I)

in which :
R represents a linear alkyl having from 12 to 16 carbon atoms,
R ¹ and R ² independently represent a C ₁ -C ₄ alkyl group,
Q ^- represents an anionic counterion, in particular a halide such as chloride;
c) at least one chelating agent chosen from aminocarboxylic acids and their salts, and
d) at least one nonionic surfactant chosen from polycondensates of ethylene oxide and propylene oxide,
wherein the composition is free of silicone. Composition according to Claim 1, in which the branched alkane is chosen from isooctane, isononane, isodecane, isoundecane, isodododecane, isotridecane, isotetradecane, isopentadecane, isohexadecane , isoheptadecane, isooctadecane and mixtures thereof. Composition according to Claim 1 or 2, in which the branched alkane comprises 12 to 16 carbon atoms. A composition according to any of claims 1 to 3, wherein the composition comprises the branched alkane as the sole oil. Composition according to any one of claims 1 to 4, in which the demixing agent is a mixture comprising lauryldimethylbenzylammonium chloride, myristyldimethylbenzylammonium chloride and palmityldimethylbenzylammonium chloride. Composition according to any one of Claims 1 to 5, in which the chelating agent is chosen from diethylenetriaminepentaacetic acid (DTPA), ethylenediamine-disuccinic acid (EDDS), trisodium ethylenediamine disuccinate, ethylenediamine-tetraacetic acid (EDTA), ethylenediamine- N,N'-diglutaric acid (EDDG), glycinamide-N,N'-disuccinic acid (GADS), 2-hydroxypropylenediamine-N,N'-disuccinic acid (HPDDS), ethylenediamine-N,N'-bis (ortho- hydroxyphenylacetic acid) (EDDHA), N,N'-bis (2-hydroxybenzyl) ethylenediamine-N,N'-diacetic acid (HBED), nitrilotriacetic acid (NTA), methylglycine diacetic acid (MGDA), N-2-hydroxyethyl- N,N-diacetic acid, glycerylliminodiacetic acid, iminodiacetic acid - N-2-hydroxypropylsulfonic acid, aspartic acid - N-carboxymethyl N-2-hydroxypropyl-3-sulfonic acid, beta-alanine-N,N'-diacetic acid, acid aspartic-N,N'-diacetic acid, aspartic acid-N-onoacetic acid, im acid chelating agents inodisuccinic acid (IDSA), ethanoldiglycine acid and tetrasodium glutamate diacetate (GLDA). Composition according to any one of Claims 1 to 6, in which the nonionic surfactant is chosen from polyethylene glycol/polypropylene glycol/polyethylene glycol triblock polycondensates corresponding to the chemical structure of formula (II):
H-(O-CH ₂ -CH ₂ )a-(O-CH(CH ₃ )-CH ₂ )b-(O-CH ₂ -CH ₂ )a-OH (II)
in which
a goes from 2 to 150, and b from 1 to 100. Composition according to any one of claims 1 to 7, further comprising in the oily phase and/or the aqueous phase an additional ingredient chosen from pH correcting agents, additional surfactants, preservatives, perfumes and thickeners. Composition according to Claim 1, comprising, based on the total weight of the composition:
a) from 30% to 70% by weight of at least one branched alkane containing from 12 to 16 carbon atoms;
b) from 0.01% by weight to 0.05% by weight of at least one demixing agent of formula (I)

in which :
R represents a linear alkyl having from 12 to 16 carbon atoms,
R ¹ and R ² independently represent a C ₁ -C ₄ alkyl group,
Q ^- represents chloride;
c) from 0.01% by weight to 0.1% by weight of at least one chelating agent chosen from ethylenediaminetetraacetic acid (EDTA), diethylenetriaminepentaacetic acid (DTPA), S,S' -ethylenediamine-disuccinic acid (EDDS), trisodium ethylenediamine disuccinate, ethylenediaminetetramethylenephosphonic acid (EDTMP) and tetrasodium glutamate diacetate (GLDA), and mixtures thereof; And
d) from 0.01% to 0.1% by weight of at least one nonionic surfactant chosen from polyethylene glycol/polypropylene glycol/polyethylene glycol triblock polycondensates corresponding to the chemical structure of formula (II):
H-(O-CH ₂ -CH ₂ )a-(O-CH(CH ₃ )-CH ₂ )b-(O-CH ₂ -CH ₂ )a-OH (II)
where a ranges from 10 to 130 and b ranges from 20 to 80,
wherein the composition is free of silicone. Process for cleansing and/or removing make-up from keratinous materials, in particular the skin, comprising shaking the composition according to any one of Claims 1 to 9 to form an emulsion, applying the emulsion to the keratinous materials, by particular the skin, and rinsing off said composition after an optional time.