COSMETIC FOAMING SYSTEM

Abstract

COSMETIC FOAMING SYSTEM The present invention relates to a cosmetic foaming system, in particular for cleaning keratinous materials and / or removing makeup from keratinous materials, comprising a) a foaming composition, comprising i) at least one anionic surfactant, ii) at least one C12-C24 fatty alcohol, and iii) optionally, a viscosity modifier; and b) a container capable of ejecting said foaming composition, wherein the foaming composition has a viscosity ranging from 0.5 to 400.0 mPa s, and the composition is ejected from the container in the form of foams. Figure for abstract: none

Description

Title of the invention: COSMETIC FOAMING SYSTEM Technical field

[0001] The present invention relates to a cosmetic foaming system, in particular, a cosmetic foaming system for cleaning keratinous materials and / or removing makeup from keratinous materials. CONTEXT OF ART

[0002] It is very important to cleanse the skin and remove makeup from the skin to care for the skin. In particular, it is very important for consumers of makeup products to have an effective makeup remover available. It must be as effective as possible because oily residues, such as dirt, excess sebum, and remnants of daily used cosmetics and makeup products, especially waterproof products, accumulate in the skin folds, can block the skin pores and lead to the appearance of spots.

[0003] So far, there are several types of makeup remover or cleansing products, for example, rinse-off anhydrous cleansing oils and gels, solid makeup removers, biphasic makeup removers, makeup remover lotion or cream, etc.

[0004] Foaming cleansing products are favorable, which have a cleansing action thanks to surfactants, and suspend the fatty residues and pigments of makeup products, for example. Among them, self-foaming products or auto-foaming products are more favorable, because the cosmetic composition is ejected from the container carrying them in the form of foams, i.e. customers do not need to rub their hands to form foams. For these products, good foaming property, rinsing speed and skin finish, for example leaving a good feeling on the skin after rinsing, are very important.

[0005] However, some products have the disadvantages of not providing a good skin finish upon application, which is disadvantageous from a cosmetic point of view. In addition, for some commercial products, the rinsing speed is not high and / or the desirable foam elasticity, i.e. stable and long-lasting bubbles, cannot be delivered, which makes their use unpleasant.

[0006] Furthermore, the formulation of environmentally friendly cosmetic products, which are designed and developed with environmental issues in mind, is becoming a major objective in an effort to address global challenges.

[0007] It is therefore essential to offer more sustainable compositions to respond to these environmental concerns.

[0008] In this context, it is important to develop new cosmetic compositions with a better carbon footprint, in particular by promoting the use renewable raw materials and / or materials with a good natural index and / or materials of natural origin and, more particularly, materials of plant origin while reducing the use of compounds of petrochemical origin.

[0009] Therefore, there is a need for a self-foaming product for cleaning keratinous materials and / or removing makeup from keratinous materials, which is more durable and can deliver good foam elasticity, a smooth skin finish and a high rinsing speed. Summary of the invention

[0010] The inventors have found that such a need can be met by the cosmetic foaming system according to the present invention.

[0011] According to a first aspect, the present invention provides a cosmetic foaming system, in particular for cleaning keratinous materials and / or removing makeup from keratinous materials, comprising

[0012] a) a foaming composition, comprising

[0013] i) at least one anionic surfactant,

[0014] ii) at least one C12-C24 fatty alcohol, and

[0015] iii) optionally, a viscosity modifier; and

[0016] b) a container capable of ejecting said foaming composition,

[0017] wherein the composition has a viscosity ranging from 0.5 mPa-s to 400.0 mPa-s, and wherein the composition is ejected from the container in the form of foams.

[0018] According to a second aspect, the present invention provides a process for cleaning keratinous materials and / or removing makeup from keratinous materials, comprising

[0019] i) ejecting the above foaming composition carried in the above container onto the keratinous materials directly or indirectly, and

[0020] ii) rinsing said foaming composition after an optional period,

[0021] wherein the composition is ejected from the container in the form of foams.

[0022] Other subjects and characteristics, aspects and advantages of the present invention will become even more apparent from the detailed description and examples which follow. Brief description of the drawings

[0023] [Fig.l] is a diagram of the container of the cosmetic foaming system according to one embodiment.

[0024] The accompanying drawings are not necessarily to scale and present a simplified representation of various preferred features of the present disclosure as disclosed herein, including, for example, specific dimensions, orientations, locations and shapes. Details associated with these features will be in part determined by the particular intended application and usage environment. DETAILED DESCRIPTION OF THE INVENTION

[0025] In the following and unless otherwise indicated, the limits of a range of values ​​are included in this range, in particular in the expressions "between...and..." and "from... to...".

[0026] The expression “at least one” used in the present description is equivalent to the expression “one or more”.

[0027] Throughout this application, the term "comprising" should be interpreted to encompass all of the specifically mentioned features as well as optional, additional, unspecified features. As used herein, the use of the term "comprising" also discloses the embodiment in which no material features other than the specifically mentioned features are present (such as "consisting essentially of" or "consisting of"). In the case of "consisting essentially of," any additional composition, material, and / or component that materially affects the fundamental and novel features is excluded from such an embodiment, but any composition, material, and / or component that does not materially affect the fundamental and novel features may be included in the embodiment.

[0028] The term "keratinous material(s)", as used herein, refers to skin, nails or mucous membranes. Preferably, the keratinous material(s) refers to skin.

[0029] The term "self-foaming product" means that the cosmetic composition is discharged or ejected from the container carrying it in the form of foams, and therefore customers do not need to rub their hands together to form foams. Cosmetic foaming system

[0030] The cosmetic foaming system according to the present invention comprises a foaming composition and a container capable of ejecting said foaming composition, wherein the composition is ejected from the container in the form of foams. Foaming composition

[0031] The foaming composition according to the present invention comprises at least one anionic surfactant, at least one C12-C24 fatty alcohol, and optionally a viscosity modifier. The foaming composition according to the present invention may comprise an aqueous solvent. Anionic surfactants

[0032] The anionic surfactant according to the present invention may be selected from salts, for example, alkali metal salts such as sodium salts, ammonium salts, amine salts, amino alcohol salts and alkaline earth metal salts of the types of the following compounds: alkyl sulfates, alkyl ether sulfates, sulfonates, acyl isethionates, acyl taurates, sulfosuccinates and acyl amino acids. Preferably, the alkyl and acyl groups of all these compounds comprise from 6 to 24 carbon atoms (straight or branched).

[0033] According to the present invention, the anionic surfactant is preferably chosen from acyl amino acids.

[0034] The acyl amino acid surfactant may be derived from an amino acid carboxylate salt in which the amino group located on the α-carbon or the β-carbon of an amino acid salt is acylated with a C8-C22 fatty acid derivative.

[0035] The carboxylate salts of these amino acids can be formed by conventional means such as neutralizing the respective amino acid with a base. The amino group located on the α-carbon or β-carbon of the neutralized amino acid is acylated with a fatty acid halide (acyl halide) in the presence of a base via the well-known Schotten-Baumann reaction yielding the amide, thereby forming the desired surfactant reaction product, namely: the acyl amino acid surfactant. Acyl halides suitable for acylation of the amino acid carboxylate salt include acyl chlorides, bromides, fluorides and iodides. Acyl halides can be prepared by reacting a saturated or unsaturated, straight or branched C8-C22 fatty acid with a thionyl halide (bromide, chloride, fluoride and iodide).Representative acyl halides include, but are not limited to, acyl chlorides selected from decanoyl chloride, dodecanoyl chloride (lauroyl chloride), cocoyl chloride (fatty acid chlorides derived from coconut oil), tetradecanoyl chloride (myristoyl chloride), hexadecanoyl chloride (palmitoyl chloride), octadecanoyl chloride (stearoyl chloride), 9-octadecenoyl chloride (oleoyl chloride), eicosanoyl chloride (arachidoyl chloride), docosanoyl chloride (behenoyl chloride), and any mixture thereof. Other acyl halides include the bromides, fluorides, and iodides of the above fatty acids. A method for preparing acyl halides and another method for acylating amino acids are disclosed in US Patent Application Publication No. 2008 / 0200704, published August 21, 2008.

[0036] Preferably, said acyl amino acid surfactant is represented by the formula (I): M 2"' N' '"j''

[0037] (I)

[0038] in which:

[0039] Z represents a saturated or unsaturated, linear or branched hydrocarbon group comprising 8 to 22 carbon atoms, preferably a C8-C22 alkyl group,

[0040] X is hydrogen or methyl group,

[0041] n is 0 yes;

[0042] Y is selected from hydrogen, -CH3, -CH(CH 3)2, -CH2CH(CH3)2, -CH(CH3)CH2CH 3, -CH2C6H5, -CH2C2H4 OH, -CH2OH, -CH(OH)CH3, -(CH2)4NH2, -(CH2)3 NHC(NH)NH2, -CH2C(O)O M+> -(CH2)2C(O)OH, and -(CH2)2C(O)O M+, and

[0043] M is a salt-forming cation in which COO is the counter anion, such as for example sodium, potassium, ammonium or triethanolamine.

[0044] According to a preferred embodiment of the invention, in formula (I) above:

[0045] Z represents a saturated or unsaturated, linear or branched hydrocarbon group comprising 8 to 22 carbon atoms, preferably a C8-C22 alkyl group,

[0046] X is hydrogen or methyl group,

[0047] n is 0,

[0048] Y is selected from hydrogen, -(CH2)2C(O)OH, -(CH2)2C(O)O M+, and

[0049] M is a salt-forming cation in which COO is the counter anion, such as sodium, potassium, ammonium or triethanolamine.

[0050] Examples of the amino acid surfactant are salts of alanine, arginine, aspartic acid, glutamic acid, glycine, isoleucine, leucine, lysine, phenylalanine, serine, tyrosine, valine, sarcosine and any mixture thereof. More specifically, as acyl amino acid surfactant, mention may be made of dipotassium capryloyl glutamate, dipotassium undecylenoyl glutamate, disodium capryloyl glutamate, disodium cocoyl glutamate, disodium lauroyl glutamate, disodium stearoyl glutamate, disodium undecylenoyl glutamate, potassium capryloyl glutamate, potassium cocoyl glutamate, potassium lauroyl glutamate, potassium myristoyl glutamate, potassium stearoyl glutamate, potassium undecylenoyl glutamate, sodium capryloyl glutamate, sodium cocoyl glutamate, sodium lauroyl glutamate, sodium myristoyl glutamate, sodium olivoyl glutamate, sodium palmitoyl glutamate, sodium stearoyl glutamate,undécylénoyl glutamate de sodium, cocoyl méthyl [3-alaninate, lauroyl [3-alaninate, lauroyl méthyl [3-alaninate, myristoyl [3-alaninate, lauroyl méthyl [3-alaninate de potassium, cocoyl alaninate de sodium, cocoyl méthyl [3-alaninate de sodium et myristoyl méthyl [3-alaninate palmitoyl glycinate de sodium, lauroyl glycinate de sodium, cocoyl glycinate de sodium, myristoyl glycinate de sodium, lauroyl glycinate de potassium, cocoyl glycinate de potassium, lauroyl sarcosinate de potassium, cocoyl sarcosinate de potassium, cocoyl sarcosinate de sodium, lauroyl sarcosinate de sodium, myristoyl sarcosinate de sodium, oléoyl sarcosinate de sodium, palmitoyl sarcosinate de sodium lauroyl sarcosinate d'ammonium, lauroyl aspartate de sodium, myristoyl aspartate de , sodium, sodium cocoyl aspartate, sodium caproyl aspartate, disodium lauroyl aspartate, disodium myristoyl aspartate, disodium cocoyl aspartate, disodium caproyl aspartate, potassium lauroyl aspartate, potassium myristoyl aspartate, potassium cocoyl aspartate, potassium caproyl aspartate, dipotassium lauroyl aspartate, dipotassium myristoyl aspartate, dipotassium cocoyl aspartate, dipotassium caproyl aspartate, and mixtures thereof.

[0051] Reference may be made to commercially available acyl amino acid surfactant, for example, acyl sarcosinates, for example sodium lauroyl sarcosinate sold under the name Sarkosyl NL 97® by the company Ciba or sold under the name Oramix L 30® by the company SEPPIC, sodium myristoyl sarcosinate sold under the name Nikkol Sarcosinate MN® by the company Nikkol or sodium palmitoyl sarcosinate sold under the name Nikkol Sarcosinate PN® by the company Nikkol; alaninates, for example sodium N-lauroyl-N-methylamidopropionate sold under the name Sodium Nikkol Alaninate LN 30® by the company Nikkol or sold under the name Alanone ALE® by the company Kawaken, and N-lauroyl-N-methylalanine triethanolamine sold under the name Alanone Alta® by the company Kawaken;N-acylglutamates, for example triethanolamine monococoyl glutamate sold under the name Acylglutamate CT-12® by Ajinomoto and triethanolamine lauroyl glutamate sold under the name Acylglutamate LT-12® by Ajinomoto; glycinates, for example sodium N-cocoyl glycinate sold under the name Amilite GCS-12® by Ajinomoto; aspartates, for example the mixture of triethanolamine N-lauroyl aspartate and triethanolamine N-myristoyl aspartate, sold under the name Asparack® by Mitsubishi; citrates, and any mixture thereof.

[0052] According to the present invention, the anionic surfactant may include a main surfactant and optionally a co-surfactant. In one embodiment, the anionic surfactant includes a main surfactant and does not include a co-surfactant. In one embodiment, the anionic surfactant includes both a main surfactant and a co-surfactant.

[0053] Preferably, the main surfactant is chosen from glycinates, and more preferably specific glycinates as mentioned above.

[0054] Even more preferably, the primary surfactant is selected from the group consisting of sodium cocoyl glycinate, sodium lauroyl glycinate, potassium cocoyl glycinate, potassium lauroyl glycinate, TEA cocoyl glycinate, TEA lauroyl glycinate, and mixtures thereof, wherein "TEA" refers to a triethanolamine salt. Preferably, the primary surfactant includes sodium cocoyl glycinate and / or potassium cocoyl glycinate.

[0055] Preferably, the co-surfactant is chosen from alaninates, sarcosinates, glutamates and their mixtures, and more preferably alaninates, sarcosinates, specific glutamates as mentioned above and their mixtures.

[0056] Even more preferably, the co-surfactants are selected from the group consisting of sodium lauroyl sarcosinate, sodium cocoyl glutamate, sodium stearoyl glutamate, disodium cocoyl glutamate, sodium lauroyl glutamate, TEA cocoyl glutamate and mixtures thereof.

[0057] Preferably, the anionic surfactant is selected from the group consisting of sodium cocoyl glycinate, sodium lauroyl glycinate, potassium cocoyl glycinate, potassium lauroyl glycinate, TEA cocoyl glycinate, TEA lauroyl glycinate, and mixtures thereof.

[0058] More preferably, the anionic surfactant is chosen from sodium cocoyl glycinate and / or potassium cocoyl glycinate.

[0059] Advantageously, the anionic surfactant is present in an amount ranging from 0.01% by weight to 30% by weight, preferably from 0.1% by weight to 20% by weight, more preferably from 0.5% by weight to 15% by weight, relative to the total weight of the composition. C12-C24 fatty alcohols

[0060] According to the present invention, the C12-C24 fatty alcohol may correspond to the formula RCH2 OH in which R is a straight or branched chain, saturated or unsaturated hydrocarbon group comprising at least 11 to 23 carbon atoms.

[0061] Preferably, the C12-C24 fatty alcohol is of structure R-OH with R denoting an alkyl group comprising from 12 to 24 carbon atoms, and preferably comprising from 12 to 22 carbon atoms.

[0062] Preferably, the C12-C24 fatty alcohols suitable for use in the present invention are selected from the group consisting of cetyl alcohol, stearyl alcohol, cetearyl alcohol, lauryl alcohol, tridecyl alcohol, myristyl alcohol, pentadecyl alcohol, arachidyl alcohol, isostearyl alcohol, behenyl alcohol and mixtures thereof; and preferably selected from the group consisting of lauryl alcohol, behenyl alcohol, cetyl alcohol, stearyl alcohol, isostearyl alcohol, cetearyl alcohol and mixtures thereof.

[0063] As cetyl alcohols which may be particularly suitable for use in For use in the present invention, it is possible to use, for example, the products sold under the names Ecorol® 16 / 98 F and Ecorol® 16 / 98 P sold by the company Ecogreen Oleochemicals, Tegoalkanol® 16 sold by the company Evonik Goldschmidt, Lanette® 16 sold by the company Cognis, Vegarol® 1698 sold by the company WF, Alkonat® 1698 P sold by the company Oxiteno, Cetyl Alcohol 98% Min sold by the company Emery Oleochemicals, Ginol® 16 (98%) sold by the company Godrej Industries, Nacol® 16-98 sold by the company Sasol, Kalcol® 6098 sold by the company Kao, and Acilol® 16 sold by Aegis Chemical Company.

[0064] As stearyl alcohols which may be particularly suitable for use in the present invention, there may be used, for example, those sold under the names Tegoalkanol® 18 by the company Evonik Goldschmidt, Ecorol® 18 / 98 F and Ecorol® 18 / 98 P by the company Ecogreen Oleochemicals, Lanette® 18 sold by the company Cognis, Kalcol® 8098 sold by the company Kao, Acilol® 18 sold by the company Aegis Chemical, Nacol® 18-98 sold by the company Sasol and NAA® 45 sold by the company Nihon Yushi.

[0065] As cetylstearyl alcohols which may be particularly suitable for use in the present invention, it is possible to use, for example, those sold under the names Ecorol® 68 / 50 F and Ecorol® 68 / 50 P sold by the company Ecogreen Oleochemicals, Lanette® O OR and Lanette® O OR Flakes sold by the company Cognis, Alkonat® 1618 C50 P sold by the company Oxiteno, Nafol® 16-18 EN sold by the company Sasol, Alcohol Cetoestearilico 50 / 50 sold by the company Industria Quimica Del Centro, Conol® 30 CK sold by the company New Japan Chemical, Cetylstearyl Alcohol 50:50 sold by the company Evonik Goldschmidt, Kalcol® 6850 sold by the company Kao, Vegarol® 1618 (50:50) sold by the company WF and Ginol® 1618 50:50 OR sold by Godrej Industries.

[0066] As behenyl alcohol which may be particularly suitable for use in the present invention, it is possible to use, for example, the products sold under the name LANETTE 22 by the company BASF, under the name VEGAROL 2270 by the company WF, and under the name NAFOL 1822 C by the company SASOL.

[0067] According to a preferred embodiment, the C12-C24 fatty alcohol is chosen from cetyl alcohol and / or behenyl alcohol.

[0068] Advantageously, the C12-C24 fatty alcohol is present in an amount ranging from 0.001% by weight to 10% by weight, preferably from 0.002% by weight to 5% by weight, more preferably from 0.005% by weight to 3% by weight, relative to the total weight of the foaming composition. Viscosity modifiers

[0069] According to the present invention, the viscosity modifier may be chosen from polysaccharide polymers, including gums, celluloses and their derivatives.

[0070] Preferably, the viscosity modifier is selected from celluloses and their derivatives. Non-limiting examples include carboxymethylcellulose, hydroxyethylcellulose, hydroxyethyl ethylcellulose, hydroxypropylcellulose, hydroxypropyl methylcellulose, methyl hydroxyethylcellulose, microcrystalline cellulose and mixtures thereof. Preferably, the viscosity modifier is selected from hydroxypropyl methylcellulose.

[0071] Advantageously, the viscosity modifier is present in an amount ranging from 0% by weight to 0.2% by weight, preferably from 0.0001% by weight to 0.15% by weight, more preferably from 0.0005% by weight to 0.10% by weight, relative to the total weight of the composition. Aqueous phase

[0072] The foaming composition of the present invention may comprise at least one aqueous phase.

[0073] Preferably, the aqueous phase of the foaming composition according to the present invention comprises water and optionally one or more water-miscible or at least partially water-miscible compounds, for example lower C2-C8 polyols or monoalcohols, such as ethanol and isopropanol.

[0074] The term "polyol" should be understood to mean any organic molecule comprising at least two free hydroxyl groups. Examples of polyols that may be mentioned include glycols, for example butylene glycol, propylene glycol, dipropylene glycol, isoprene glycol, hexylene glycol, caprylyl glycol, glycerol (i.e. glycerin) and polyethylene glycols.

[0075] According to a preferred embodiment, the composition according to the present application further comprises at least one C2-C8 polyol chosen from butylene glycol, propylene glycol, dipropylene glycol, isoprene glycol, hexylene glycol, caprylyl glycol, glycerin and polyethylene glycols.

[0076] According to a preferred embodiment, the composition according to the present invention comprises both water and a C2-C8 polyol, preferably glycerol (i.e. glycerin).

[0077] Advantageously, the C2-C8 polyol is present in an amount ranging from 1% by weight to 30% by weight, preferably from 5% by weight to 20% by weight, relative to the total weight of the composition.

[0078] Advantageously, the water is present in an amount of between 20% and 80% by weight, preferably between 30% and 70% by weight, more preferably between 40% and 60% by weight, relative to the total weight of the foaming composition. Additional ingredients

[0079] The composition according to the present invention may comprise one or more additional ingredients selected from those conventionally used in skin care cleansers.

[0080] The composition according to the present invention may comprise any of the following additives: pH correcting agents (for example: citric acid), biological extracts, antibacterial agents, perfumes and chelating agents.

[0081] 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 routine operations, so that the desired properties of these compositions are not negatively affected by the additional ingredients. Viscosity

[0082] According to the present invention, the foaming composition has a viscosity ranging from 0.5 to 400.0 mPa-s, from 1.0 to 250.0 mPa-s, from 1.2 to 100.0 mPa-s, or from 2 to 50.0 mPa-s, such as 30.0 mPa-s, 20.0 mPa-s, 10.0 mPa-s, 8.0 mPa-s, 5.0 mPa-s and 2.0 mPa-s.

[0083] In one embodiment, the foaming composition has a viscosity ranging from 1.0 to 250.0 mPa-s, preferably from 1.5 to 50.0 mPa-s, more preferably from 1.5 to 25.0 mPa-s and even more preferably from 1.8 to 10.0 mPa-s.

[0084] According to the present invention, viscosity measurements can be performed using any common instrument and method in the cosmetic field. For example, viscosity measurement is performed using a Brookfield viscometer, model RVT (Brookfield Engineering Laboratories, Inc.) at 20 revolutions per minute (rpm), at an ambient temperature of 20 to 25°C, with spindle sizes being selectable in accordance with the manufacturers' standard operating recommendations.

[0085] By virtue of the above specific viscosities, the foaming composition can achieve desirable performances, including foam elasticity, rinsing speed and skin finish. Container

[0086] According to the present invention, the cosmetic foaming system comprises a container which is used to eject the above foaming composition.

[0087] According to the present invention, the container may be any type of container capable of ejecting the above foaming composition. The container may be in the form of a bottle, can, pouch or tank, and preferably in the form of a bottle.

[0088] Preferably, the container is not an aerosol container, i.e., the container does not include a propellant gas for foam formation. Examples of propellant gases may include, but are not limited to, gases such as air, nitrogen, and carbon dioxide; and liquefied petroleum gas, including propane, butane, isobutane, and isopentane.

[0089] Preferably, the container comprises a lid portion and a body portion carrying the foaming composition, the lid portion being connected to the body portion by any means common in the art, for example the lid portion is screwed onto the body portion by threading.

[0090] The cover portion comprises at least one net-forming member for forming foams, the net-forming member being detachable or not detachable from the cover portion.

[0091] In one embodiment, the cover portion comprises two members forming net to form mousses.

[0092] Referring to [Fig.l], the cover part comprises an air inlet portion (a nozzle member) 1, an upper thread 2, a mixing chamber 3, a lower thread 4, a piston member 5, a liquid inlet portion 6 and a suction tube 7, wherein these seven members may or may not be detachable from the cover part. In this embodiment, the air inlet portion and the nozzle member are integrated and therefore have the reference numeral.

[0093] The upper net 2 is secured at the top of the mixing chamber 3 and the lower net 4 is secured at the bottom of the mixing chamber 3, downward pressure of the nozzle member 1 being required to eject the above composition in the form of foams. When the nozzle member 1 is pressed downward, the composition is sucked through the suction tube 7 and the liquid inlet portion 6 into the mixing chamber 3, and air is simultaneously introduced into the mixing chamber 3 through the air inlet portion 1. Then, the composition and the air in the mixing chamber 3 are pumped through the upper net 2 to form foams, and then the foams are ejected from the nozzle member 1.

[0094] According to the present invention, in addition to the net-forming member, each component of the container may be independently made of any material that is applicable to carrying cosmetic products. Non-limiting examples include aluminum, stainless steel, glass, enamel, ceramic, and polymers, and preferably polymers.

[0095] Suitable polymers include, but are not limited to, polymers of ethylenically unsaturated monomers, including olefins such as polyethylene, polypropylene, polybutylene, and copolymers of ethylene with higher olefins such as alpha olefins containing 4 to 10 carbon atoms or vinyl acetate; vinyls such as polyvinyl chloride, vinyl polyesters such as polyvinyl acetate, polystyrene, acrylic homopolymers and copolymers; phenolics; alkyds; amino resins; polyamides; phenoxy resins, polysulfones; polycarbonates; polyesters and chlorinated polyesters; polyethers; acetal resins; polyimides; and polyoxyethylenes. Blends of polymers are also contemplated. Typically, the polymer may be selected from the group consisting of polyolefin, polyvinyl chloride, polyamide and polyester, and mixtures thereof.In one embodiment, the polymer is selected from polyesters, including copolyesters. Examples of polyesters include, but are not limited to, poly(ethylene terephthalate), poly(trimethylene terephthalate), poly(butylene terephthalate), poly(ethylene terephthalate-co-1,4-cylclohexylene terephthalate) (PETG) which is a polycondensation product of the three monomers terephthalic acid (PTA), ethylene glycol. (EG) and 1,4-cyclohexanedimethanol (CHDM) by transesterification, and mixtures thereof.

[0096] The net-forming member is 20 to 400 mesh / cm2, and preferably 50 to 300 mesh / cm2, and has a thickness of 0.001 to 1 mm, and preferably 0.005 to 0.5 mm. When the container comprises two net-forming members, for example: an upper net and a lower net, the upper net often has more mesh than the lower net. In one embodiment, the upper net is 250 to 400 mesh / cm2, and the lower net is 100 to 200 mesh / cm2.

[0097] In one embodiment, the net-forming member is of one-piece construction.

[0098] According to the present invention, the net-forming member is made of polyesters, nylons, polyethylene, polypropylene or carbon fiber, or stainless steel wire.

[0099] According to the present invention, the composition and air are carried into the mixing chamber in a ratio such that dense and uniform bubbles are generated when pumped through the net-forming member.

[0100] The container may be transparent, translucent or opaque. The container has a capacity of 5 mL to 800 mL, for example: 50 mL to 650 mL or 100 mL to 400 mL. When the container is in the form of a bottle, it may have a square bottom or a round bottom.

[0101] In one embodiment, the container is a 400 mL square PETG cosmetic bottle available from Muji Company.

[0102] By combining the above foaming composition and container, better performance, including foam elasticity, rinsing speed and skin finish, can be achieved, compared to the cosmetic foaming system which does not include a container capable of ejecting the composition in the form of foams.

[0103] In a preferred embodiment, the present invention relates to a cosmetic foaming system for cleaning keratinous materials and / or removing makeup from keratinous materials, comprising

[0104] a) a foaming composition, comprising

[0105] i) at least one acyl amino acid surfactant represented by formula (I) above,

[0106] ii) at least one C12-C24 fatty alcohol, and

[0107] iii) optionally, a viscosity modifier; and

[0108] b) a container capable of ejecting said foaming composition,

[0109] wherein the composition has a viscosity ranging from 1.0 to 250.0 mPa-s, and the composition is ejected from the container in the form of foams.

[0110] In a preferred embodiment, the present invention relates to a cosmetic foaming system for cleaning keratinous materials and / or removing makeup from keratinous materials, comprising

[0111] a) a foaming composition, comprising

[0112] i) at least one glycinate surfactant,

[0113] ii) at least one C12-C24 fatty alcohol, and

[0114] iii) optionally, a viscosity modifier; and

[0115] b) a container capable of ejecting said foaming composition,

[0116] wherein the composition has a viscosity ranging from 1.0 to 250.0 mPa-s, and the composition is ejected from the container in the form of foams, and wherein the container comprises a lid portion and a body portion carrying the foaming composition, and the lid portion comprises at least one net-forming member for forming foams. Method and use

[0117] The foaming composition according to the present invention can be used in a process of cleaning keratinous materials and / or removing makeup from keratinous materials, such as the skin, in particular the face, by being applied, for example being ejected, onto the keratinous materials.

[0118] The foaming composition according to the present invention is soft and oil resistant, and has no dripping problem.

[0119] It has been found that the foaming composition according to the present invention can provide good foam elasticity, fast rinsing speed and a slippery skin finish (i.e., a non-tight and non-dry skin feeling) after application.

[0120] The foaming composition according to the invention can be applied by any means allowing uniform distribution, in particular using a finger or a cotton ball, and can be removed by rinsing with water.

[0121] According to another aspect, the present invention relates to a process for cleaning keratinous materials and / or removing makeup from keratinous materials, in particular from the skin, comprising the ejection of the above foaming composition carried in the above container onto the keratinous materials directly or indirectly, and the rinsing of said foaming composition after an optional period, for example after a period of 0 s to 30 min, the composition being ejected from the container in the form of foams.

[0122] The expression "ejecting the foaming composition onto the keratinous materials directly" means that the foaming composition is directly ejected onto the keratinous materials and that no basin or medium is used. The expression "ejecting the foaming composition onto the keratinous materials indirectly" means that the foaming composition is first ejected onto a basin or medium, for example a finger, a palm or a cotton ball, and then the foaming composition is applied to the keratinous materials by means of said basin or medium carrying said foaming composition.

[0123] According to the present invention, the composition is ejected from the container carrying it in pressing downwards on the nozzle member, the container having the structure as defined above. During pressing, foams are formed when the composition and air in the mixing chamber are pumped through the net-forming member, and then foams are ejected from the nozzle member.

[0124] The present invention is illustrated in more detail by the examples described below, which are given by way of non-limiting illustrations. EXAMPLES

[0125] The main raw materials used, trade names and their supplier are listed in Table 1.

[0126] [Tables 1] INCI name Trade name Supplier POTASSIUM COCOYL GLYCINATE AMILITE® GCK-11 AJINOMOTO SODIUM COCOYL GLYCINATE AMILITE® GCK-12K AJINOMOTO BEHENYL ALCOHOL LANETTE® 22 BASF CETYL ALCOHOL LANETTE® 16 BASF HYDROXYPROPYL METHYLCELLULOSE BENECEL™ K100M HYDROXYPROPYL METHYL CELLULOSE ASHLAND

[0127] Comparative Examples 1 to 3 and Inventive Examples 1 to 5

[0128] The compositions according to Comparative Examples (EC.) 1-3 and Inventive Examples (Ex.) 1-5 comprising the ingredients shown in Table 2 were prepared, all quantities being expressed as percentages by weight of active material relative to the total weight of each composition.

[0129] [Tables2] Components Ex.l Ex.2 Ex.3 Ex.4 Ex.5 EC.l EC.2 EC.3 POTASSIUM COCOYL GLYCINATE 10 - 10 10 10 10 10 10 SODIUM COCOYL GLYCINATE - 10 - - - - - - CETYL ALCOHOL - - 2 - - - - - BEHENYL ALCOHOL 2 2 - 2 2 - 2 2 HYDROXYPROPY L METHYL- CELLULOSE 0.001 0.001 0.001 0 0.15 0.001 0.5 0.001 GLYCERIN 10 10 10 10 10 10 10 10 WATER QS100 QS100 QS100 QS100 QS100 QS100 QS100 QS100 FOAM EJECTION CONTAINER Yes Yes Yes Yes Yes Yes Yes No VISCOSITY 4.6 4.0 6.5 2.4 218.0 1.5 442.0 4.6 Preparation process

[0130] The compositions were prepared from a process comprising the following steps:

[0131] 1). addition of glycerin, water, potassium cocoyl glycolinate / cocoyl glycolinate sodium, cetyl alcohol / behenyl alcohol and hydroxypropyl methylcellulose in a main beaker,

[0132] 2). heating the mixture resulting from step 1) to a temperature of 80°C,

[0133] 3). cooling the mixture from step 2) to a temperature of 30°C, and

[0134] 4). aging of the mixture from step 3) for 24 h. Evaluation of compositions

[0135] The as-prepared compositions were evaluated in terms of foam elasticity, rinsing speed and skin finish. Foam elasticity

[0136] Preparation:

[0137] filling the compositions as prepared into a container for ejection said compositions, the container being a 400 mL square PETG bottle available from Muji Company.

[0138] Procedure:

[0139] 1) Rinse hands under running tap water for 2 seconds, pressing the nozzle member of the container for ejecting 1 g of the composition in the form of foams into the palm; and

[0140] 2) checking the elasticity of the foam by pressing three times on the surface of the foams with the finger to see if the foams had a bouncy or popping feel, where a score between 1 and 15 was given, and the higher the score, the better the foam's elasticity.

[0141] The detailed score values ​​corresponded to the following performances:

[0142] Scores of 0 to 3 meant that there was no foam bounce sensation, and that the foams burst and disappeared quickly;

[0143] Scores of 4 to 7 meant that slight foam rebound occurred and the foams burst and slowly disappeared;

[0144] Scores of 8 to 11 meant an intermediate foam bounce sensation, but the foams could not recover and eventually disappeared.

[0145] Scores of 12 to 15 meant that a strong foam bounce sensation occurred and could retain its shape with high elasticity for a long time.

[0146] A score of 12 or higher was acceptable and a score of 15 was the best. Rinse speed

[0147] Rinse speed was used to define the rapidity of the strongest grinding sensation across the entire face and was tested as follows:

[0148] After applying the foaming composition to the face, the face was rinsed only with wet hands, and the number of times it was necessary to stop filling (or have a squeal) and rinse the foams out was counted, where a score in a range of 1 to 5 was given, and the fewer times it took, the greater the rinsing speed.

[0149] The detailed score values ​​corresponded to the following performances:

[0150] Score of 1 meant rinsing time greater than 10 times and strong residual sensation without squeaking sensation;

[0151] A score of 2 meant rinsing time between 7 and 10 times with a slight squeaking sensation;

[0152] The score of 3 meant a rinsing time between 5 and 6 times with an intermediate squeaking sensation;

[0153] The score of 4 meant a rinse time between 3 and 4 times with a strong squeaking sensation;

[0154] Score of 5 meant 2 times rinsing time with strong feeling of creaking.

[0155] A score of 3 or higher was acceptable and a score of 5 was the fastest. Skin finish

[0156] After lathering and rinsing the foaming composition off the face, the face was half-dried with absorbent paper and the skin finish was assessed, where the term "the face was half-dried" meant that there was no lather or water droplets left on the face to the naked eye but there was still a wet feeling on the face. A score in a range of 1 to 5 was given, where the higher the score, the more slippery the skin finish was.

[0157] The detailed score values ​​corresponded to the following performances:

[0158] A score of 1 meant that a strong feeling of dryness and resistance occurred were drinking when the face was touched;

[0159] A score of 2 meant that a slight dryness and resistance occurred when the face was touched;

[0160] A score of 3 meant that a slight moisturizing sensation and a slippery sensation occurred when the face was touched;

[0161] The score of 4 meant that an intermediate hydration sensation and a slippery sensation occurred when the face was touched;

[0162] Score 5 meant that a strong feeling of hydration and a slippery sensation occurred when the face was touched.

[0163] A score of 3 or higher was acceptable and a score of 5 was the best.

[0164] The results are summarized in Table 3.

[0165] [Tables3] Performance Ex. 1 Ex. 2 Ex. 3 Ex. 4 Ex. 5 EC. 1 EC. 2 EC. 3 Foam elasticity 15 / 15 15 / 15 14 / 15 14 / 15 12 / 15 5 / 15 4 / 15 No foam Rinse speed 4 / 5 5 / 5 4 / 5 5 / 5 3 / 5 5 / 5 2 / 5 1 / 5 Skin finish 4 / 5 4 / 5 4 / 5 4 / 5 4 / 5 2 / 5 5 / 5 3 / 5

[0166] From the data in Table 3, it can be seen that each of Inventive Examples 1 to 5 obtained a score of 12 or more for foam elasticity, while Comparative Examples 1-3 could not form foams or obtained a score of 5 or less. Therefore, in the aspect of foam elasticity, the cosmetic foaming systems of the present invention will be able to provide a much better elasticity of the foam than those systems which included a composition having a viscosity greater than 400 mPa-s, did not include a C12-C24 fatty alcohol or did not include a container capable of ejecting the composition in the form of foams.

[0167] Furthermore, in the aspect of rinsing speed, most of the cosmetic foaming systems of the present invention will be able to obtain a score of 4 or higher, in particular the systems comprising a composition having a viscosity of 50 mPa-s or lower, while the cosmetic foaming systems comprising a composition having a viscosity higher than 400 mPa-s, which did not fall within the viscosity range of the present invention, and the cosmetic foaming systems which did not include a container capable of ejecting the composition in the form of foams, only obtained a score of 2 or lower. Therefore, the cosmetic foaming systems of the present invention could result in a higher rinsing speed than those of the systems comprising a composition having a viscosity higher than that of the present invention or systems which did not include a container capable of ejecting the composition in the form of foams.

[0168] Furthermore, in the finished appearance of the skin, each of Inventive Examples 1 to 5 obtained a score of 4 or more, while Comparative Example 1 obtained a score of less than 3. It can be seen that the cosmetic foaming systems of the present invention could provide a better skin finish than those of the systems which did not include a C12-C24 fatty alcohol.

[0169] Therefore, only the cosmetic foaming systems of the present invention, which included a composition having a specific viscosity, included a C12-C24 fatty alcohol and a container capable of ejecting the composition in the form of foams, could provide desirable performances, including foam elasticity, rinsing speed and skin finish. In addition, the compositions of Inventive Examples 1 to 5 are more durable. In other words, all elements including a specific viscosity of the composition, a C12-C24 fatty alcohol and a container capable of ejecting the composition were essential for the desirable performances including foam elasticity, rinsing speed and skin finish, particularly the systems comprising a composition having a viscosity of 50 mPa-s or less.

Claims

Claims

1. A cosmetic foaming system, in particular for cleaning keratinous materials and / or removing makeup from keratinous materials, comprising a) a foaming composition, comprising i) at least one anionic surfactant, ii) at least one C12-C24 fatty alcohol, and iii) optionally, a viscosity modifier; and b) a container capable of ejecting said foaming composition, wherein the foaming composition has a viscosity ranging from 0.5 to 400.0 mPa-s, and the foaming composition is ejected from the container in the form of foams.

2. System according to claim 1, wherein the anionic surfactant is selected from acyl amino acids represented by the formula (I): 0 JX .pYCOOM z ' Tf 1 1 XY (I) in which: Z represents a saturated or unsaturated, linear or branched hydrocarbon group comprising 8 to 22 carbon atoms, preferably a C8-C 22 alkyl group, X is a hydrogen or methyl group, n is 0 or 1; Y is selected from hydrogen, -CH3, -CH(CH3 )2, -CH2 CH(CH3 )2, -CH(CH3 )CH2CH3, -CH2C6H5, -CH2C2H4 OH, -CH2 OH, -CH(OH)CH3, -(CH2 )4NH2, -(CH2 )3 NHC(NH)NH2, -ch2 C(O)OMX -(CH2 )2 C(O)OH, -(CH2 )2 C(O)OM +, and is preferably selected from hydrogen, -(CH2 )2 C(O)OH, -(CH2 )2 C(O)OM +, and M is a salt-forming cation wherein COO is the counter anion, such as sodium, potassium, ammonium or triethanolamine.

3. The system of claim 1 or 2, wherein the anionic surfactant is selected from the group consisting of sodium cocoyl glycinate, sodium lauroyl glycinate, potassium cocoyl glycinate, potassium lauroyl glycinate, TEA cocoyl glycinate, TEA lauroyl glycinate, and mixtures thereof, and is preferably selected from sodium cocoyl glycinate and / or potassium cocoyl glycinate.

4. A system according to any preceding claim, wherein the C12-C24 fatty alcohol is selected from the group consisting of cetyl alcohol, stearyl alcohol, cetearyl alcohol, lauryl alcohol, tridecyl alcohol, myristyl alcohol, pentadecyl alcohol, arachidyl alcohol, isostearyl alcohol, behenyl alcohol and mixtures thereof, and is preferably selected from cetyl alcohol and / or behenyl alcohol.

5. System according to any one of the preceding claims, in which the viscosity modifier is chosen from celluloses and their derivatives, preferably from the group consisting of carboxymethylcellulose hydroxyethylcellulose, hydroxyethyl ethylcellulose, hydroxypropylcellulose, hydroxypropyl methylcellulose, methyl hydroxyethylcellulose, microcrystalline cellulose and their mixtures, and more preferably from hydroxypropyl methylcellulose.

6. A system according to any preceding claim, wherein the foaming composition has a viscosity ranging from 1.0 to 250.0 mPa-s, preferably from 1.2 to 100.0 mPa-s, or from 2 to 50.0 mPa-s.

7. A system according to any preceding claim, wherein the viscosity modifier is present in an amount ranging from 0% by weight to 0.2% by weight, preferably from 0.0001% by weight to 0.15% by weight, and more preferably from 0.0005% by weight to 0.10% by weight, relative to the total weight of the foaming composition.

8. A system according to any preceding claim, wherein the container comprises at least a lid portion and a body portion carrying the foaming composition, and the lid portion comprises at least one net-forming member for forming foams.

9. A cosmetic foaming system for cleansing keratinous materials and / or removing makeup from keratinous materials, comprising a) a foaming composition, comprising i) at least one acyl amino acid surfactant represented by formula (I) as defined in claim 2, ii) at least one C12-C24 fatty alcohol, and iii) optionally, a viscosity modifier; and b) a container capable of ejecting said foaming composition, wherein the foaming composition has a viscosity ranging from 1.0 to 250.0 mPa-s, and the foaming composition is ejected from the container under form of foams.

10. Process for cleaning keratinous materials and / or removing makeup from keratinous materials, comprising (i) the ejection of a foaming composition carried in a container onto keratinous materials directly or indirectly, and ii) rinsing said foaming composition after a period of 0 s to 30 min, wherein the foaming composition and container are defined according to any one of claims 1 to 9, and the foaming composition is ejected from the container in the form of foams.