Classifications

• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61Q—SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
  • A61Q1/00—Make-up preparations; Body powders; Preparations for removing make-up
  • A61Q1/02—Preparations containing skin colorants, e.g. pigments
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
  • A61K8/00—Cosmetics or similar toiletry preparations
  • A61K8/02—Cosmetics or similar toiletry preparations characterised by special physical form
  • A61K8/0241—Containing particulates characterized by their shape and/or structure
  • A61K8/0279—Porous; Hollow
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
  • A61K8/00—Cosmetics or similar toiletry preparations
  • A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
  • A61K8/19—Cosmetics or similar toiletry preparations characterised by the composition containing inorganic ingredients
  • A61K8/25—Silicon; Compounds thereof
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
  • A61K8/00—Cosmetics or similar toiletry preparations
  • A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
  • A61K8/72—Cosmetics or similar toiletry preparations characterised by the composition containing organic macromolecular compounds
  • A61K8/84—Cosmetics or similar toiletry preparations characterised by the composition containing organic macromolecular compounds obtained by reactions otherwise than those involving only carbon-carbon unsaturated bonds
  • A61K8/89—Polysiloxanes
  • A61K8/891—Polysiloxanes saturated, e.g. dimethicone, phenyl trimethicone, C24-C28 methicone or stearyl dimethicone

Definitions

• the present invention relates to a composition comprising at least one spherical hydrophobic silica aerogel and at least one specific silicone polymer, specifically a cosmetic composition for keratinous substances, such as skin, comprising at least one spherical hydrophobic silica aerogel and at least one specific silicone polymer.
• cosmetic compositions Long lasting properties and good textures are key factors for cosmetic compositions, in particular cosmetic compositions for keratinous substances, such as skin.
• various additives to absorb oils or sebum are added to cosmetic compositions.
• silica silylate aerogel particles are commonly used in cosmetic compositions.
• VM-2270 Aerogel Fine Particles sold by Dow Coming which do not have a certain shape but have random shape, are widely used in the market.
• spherical silica silylate aerogel particles have recently been developed (JP-A-2014-088307, JP-A-2014-218433, and JP-A-2018-177620).
• cosmetic compositions in particular cosmetic compositions for keratinous substances, such as skin, which can achieve a good long-lastingness and a good texture.
• An objective of the present invention is to provide a composition for keratinous substances, such as skin, which can provide improved a long-lastingness of matte and/or color, and a good texture.
• composition for keratinous substances such as skin, comprising:
• silicone polymer selected from silicone resins, vinyl polymers comprising at least one siloxane dendrimer, and copolymers comprising carboxylate groups and polydimethylsiloxane groups.
• the (a) spherical hydrophobic silica aerogel may be a spherical hydrophobic aerogel of silica silylate.
• the (a) spherical hydrophobic silica aerogel may have an average circularity determined by an image analysis method of 0.8 or more, and preferably 0.82 or more, and of less than 1, preferably 0.99 or less, more preferably 0.98 or less, even more preferably 0.97 or less, still even more preferably 0.96 or less, and most preferably 0.95 or less.
• the (a) spherical hydrophobic silica aerogel may have an oil-absorbing capacity, measured at the wet point, of 2 ml/g or more, preferably 3 ml/g or more, more preferably 4 ml/g or more, and most preferably from 5 ml/g or more, and of 12 ml/g or less, preferably 10 ml/g or less, more preferably 8 ml/g or less.
• the (a) spherical hydrophobic silica gel may have a specific surface area determined by BET method of 200 m 2 /g or more, preferably 300 m 2 /g or more, and more preferably 400 m 2 /g or more, and of 1,200 m 2 /g or less, preferably 1,000 m 2 /g or less, and more preferably 800 m 2 /g or less.
• the (a) spherical hydrophobic silica gel may have a pore volume determined by B JH method of 1 ml/g or more, preferably 2 ml/g or more, and more preferably 3 ml/g or more, and of 10 ml/g or less, preferably 8 ml/g or less, and more preferably 7 ml/g or less.
• the (a) spherical hydrophobic silica gel may have a peak pore radius determined by B JH method of 5 nm or more, preferably 10 nm or more, and more preferably 12 nm or more, and of 50 nm or less, preferably 30 nm or less, and more preferably 25 nm or less.
• the (a) spherical hydrophobic silica gel may have an average particle size of 0.5 pm or more, preferably from 1 pm or more, and more preferably from 2 pm or more, and of 30 pm or less, preferably 20 pm or less, and more preferably 15 pm or less.
• the (a) spherical hydrophobic silica aerogel may be present in an amount of 0.05 by weight or more, preferably 0.1% by weight or more, more preferably 0.3% by weight or more, and most preferably 0.5% by weight or more, and of 15% by weight or less, preferably 10% by weight or less, more preferably 5% by weight or less, and most preferably 4% by weight or less, relative to the total weight of the composition.
• the (b) silicone polymer may be selected from silicone resins and vinyl polymers comprising at least one siloxane dendrimer.
• the (b) silicone polymer may be present in an amount of 0.1% by weight or more, preferably 1% by weight or more, more preferably 2% by weight or more, and most preferably 3% by weight or more, and may be present in an amount of 20% by weight or less, preferably 15% by weight or less, more preferably 10% by weight or less, and most preferably 8% by weight or less, relative to the total weight of the composition.
• composition according to the present invention may be a cosmetic composition, preferably a skin makeup composition, and more preferably a make-up base composition or a foundation.
• composition according to the present invention may be in the form of O/W or W/O emulsion.
• composition according to the present invention may be provided in the form of a compact or pressed powder or a loose powder.
• the present invention also relates to a cosmetic process for a keratin substance such as skin, comprising applying the composition according to the present invention to the keratinous substance.
• a combination a spherical hydrophobic silica aerogel and a specific silicone polymer can provide improved long-lastingness of matte and/or color and a good texture with cosmetic compositions for keratinous substances, and then completed the present invention.
• composition for keratinous substances, such as skin comprises:
• silicone polymer selected from silicone resins, vinyl polymers comprising at least one siloxane dendrime, and copolymers comprising carboxylate groups and polydimethylsiloxane groups.
• composition according to the present invention will be explained in a more detailed manner.
• composition according to the present invention can be liquid or solid.
• liquid means herein that the composition is capable of flowing, even under its own weight, at an ambient temperature such as 25 °C and at atmospheric pressure
• solid means herein that the composition is not capable of flowing does not flowing, even under its own weight, at an ambient temperature such as 25 °C and at atmospheric pressure.
• the form of the composition according to the present invention is not particularly limited.
• the composition may take various forms, such as, a solution, a gel, a lotion, a serum, a suspension, a dispersion, a fluid, a milk, a paste, a cream, an emulsion (O/W or W/O form), or the like.
• the composition can be a powdery composition, which can be can be provided in the form of a compact or pressed powder, blusher or a loose powder.
• the composition according to the present invention is for keratinous substances.
• the keratinous substances can include skin, for example, of the face, neck and body, in particular facial skin.
• the composition according to the present invention can be a skin cosmetic compositions, such as a liquid or powdery foundations and liquid or powdery make-up base compositions.
• composition according to the present invention comprises (a) at least one spherical hydrophobic silica aerogel, and (b) at least one specific silicone polymer.
• the ingredients in the composition will be described in a detailed manner below.
• composition according to the present invention comprises at least one spherical hydrophobic silica aerogel.
• Aerogels are materials with high porosity.
• silica aerogels refer to a solid silica with a porous structure generally obtained by replacing medium included in wet silica gels with air by drying them while a solid network structure of the silica is maintained.
• the porosity represents the amount of air contained in an apparent volume of a material by a volume percentage.
• the spherical hydrophobic silica aerogel of the present invention may have a porosity of 60% or more, preferably 70% or more, and more preferably 80% or more.
• the hydrophobic silica aerogel of the present invention is characterized in that the shape of each of the particles is spherical.
• the hydrophobic silica aerogel can provide cosmetic compositions with good smoothness.
• the spherical degree of the hydrophobic silica aerogel may be determined by an average circularity.
• the spherical hydrophobic silica aerogel of the present invention may have the average circularity of 0.8 or more, and preferably 0.82 or more.
• the spherical hydrophobic silica aerogel may have the average circularity of less than 1, preferably 0.99 or less, more preferably 0.98 or less, even more preferably 0.97 or less, still even more preferably 0.96 or less, and most preferably 0.95 or less.
• the “average circularity” may be determined by an image analysis method.
• the “average circularity” may be an arithmetic mean of circularity obtained by image analysis of a scanning electron microscope (SEM) image of no less than 2000 aerogel particles observed at a magnification of 1000 by secondary electron detection using a scanning electron microscope (SEM).
• SEM scanning electron microscope
• C S / L 2
• C represents a circularity
• S represents an area (projected area) of the aerogel particle in the image
• L represents a length of a periphery (perimeter) of the aerogel particle in the image.
• the term "hydrophobicity" means that the silica aerogel particles is difficult to disperse in water. More specifically, this term means that an aerogel phase and an aqueous phase are completely separated after 1 g of the silica aerogel particles and 100 g of ion-exchange water are added to a bottle, the bottle is agitated or stirred for ten or more seconds, and the bottle is left to stand. Therefore, in one particular embodiment of the present invention, the spherical hydrophobic silica aerogel does not exhibit a water absorption property.
• the spherical hydrophobic silica aerogel that may be used according to the present invention is preferably of silylated silica type (INCI name: silica silylate).
• silylated silica type INCI name: silica silylate.
• the spherical hydrophobic silica aerogel may be those described in JP-A-2014-088307, JP-A-2014-218433, or JP-A-2018-177620.
• the hydrophobicity may be obtained by reacting a hydrophobizing agent with a silanol group represented by the following formula existing on the surface of silica: oSi-OH wherein the symbol "o" represents the remaining three valences of the Si atom, thereby converting the silanol group into a group represented by the following formula:
• n is an integer of 1 to 3; each R is independently a hydrocarbyl group; and two or more R may be the same or different from each other where n is 2 or more.
• the hydrophobizing agent may be a silylating agent. Therefore, according to one preferred embodiment, in the spherical hydrophobic silica aerogel, the silica particles may be modified at the surface by silylation.
• silylating agents mention may be made of a treating agent having one of the following formulae (1) to (3).
• RnSiX(4-n) wherein n represents an integer of 1 to 3; R represents a hydrocarbyl group; X represents a group (i.e. a leaving group) which can leave a molecule by cleavage of bond with the Si atom in a reaction with a compound having a hydroxyl group; each R may be different where n is 2 or more; and each X may be different where n is 2 or less.
• R 1 represents an alkylene group
• R 2 and R 3 independently represent a hydrocarbyl group
• R 4 and R 5 independently represent a hydrogen atom or a hydrocarbyl group.
• R 6 and R 7 independently represent a hydrocarbyl group; m represents an integer of 3 to 6; each R 6 may be different when there are two or more R 6 ; and each R 7 may be different when there are two or more R 7 .
• R is a hydrocarbyl group, preferably a hydrocarbyl group having a carbon number of 1 to 10, more preferably a hydrocarbyl group having a carbon number of 1 to 4, and especially preferably a methyl group.
• halogen atoms such as chlorine and bromine
• alkoxy groups such as methoxy group and ethoxy group
• groups represented by -NH-SiR3 wherein the definition of R is the same as that of R in the formula (1)).
• hydrophobing agent represented by the above formula (1) examples include: chlorotrimethylsilane, dichlorodimethylsilane, trichloromethylsilane, monomethyltrimethoxysilane, monomethyltriethoxysilane, and hexamethyldisilazane. Most preferably, chlorotrimethylsilane, dichlorodimethylsilane, trichloromethylsilane, and/or hexamethyldisilazane may be used from the viewpoint of favorable reactivity.
• the number of bond of the Si atom with the silanol group on the silica framework varies depending on the number (4-n) of the leaving group X. For example, if n is 2, the following bonding will occur:
• the silanol groups may be silylated, and thereby hydrophobization may be carried out.
• R 1 may be an alkylene group, preferably an alkylene group having a carbon number of 2 to 8, and especially preferably an alkylene group having a carbon number of2 to 3.
• R 2 and R 3 are independently a hydrocarbyl group, and the same preferable groups as those of R in the formula (1) can be raised.
• R 4 represents a hydrogen atom or a hydrocarbyl group, and when it is a hydrocarbyl group, the same preferable groups as those of R in the formula (1) can be raised.
• the silanol group may be silylated by the cyclic silazanes of the above formula (2) as well, and thereby hydrophobization may be carried out.
• cyclic silazanes represented by the above formula (3) include hexamethylcyclotrisilazane, and octamethylcyclotetrasilazane.
• R 6 and R 7 are independently a hydrocarbyl group, and the same preferable groups as those of R in the formula (2) can be raised m represents an integer of 3 to 6.
• silanol groups may be silylated by the cyclic siloxanes of the above formula (3) as well, and thereby hydrophobization may be carried out.
• cyclic siloxanes represented by the above formula (3) include hexamethylcyclotrisiloxane, octamethylcyclotetrasiloxane, and decamethylcyclopentasiloxane.
• the spherical hydrophobic silica aerogel may be prepared by producing a sol of silica, turning the sol into a gel, aging the gel, washing the aged gel, replacing water in the washed gel with a solvent, treating the gel with a hydrophobizing agent, and dying the hydrophobized silica.
• the spherical hydrophobic silica aerogel may have a specific surface area determined by BET method of 200 m 2 /g or more, preferably 400 m 2 /g or more, and more preferably 500 m 2 /g or more, and may have a specific surface area determined by BET method of 1,200 m 2 /g or less, preferably 1,000 m 2 /g or less, and more preferably 800 m 2 /g or less.
• the "specific surface area determined by BET method” means a value determined by: drying a sample for measurement at 200°C for no less than three hours under a reduced pressure of no more than 1 kPa; thereafter measuring an adsorption isotherm of only a nitrogen adsorption side at liquid nitrogen temperature; and analyzing the adsorption isotherm by the BET method.
• the pressure range used for the analysis is relative pressure of 0.1 to 0.25.
• the spherical hydrophobic silica aerogel may have a pore volume determined by B JH method of 1 ml/g or more, preferably 2 ml/g or more, and more preferably 3 ml/g or more, and may have a pore volume determined by BJH method of 10 ml/g or less, preferably 8 ml/g or less, and more preferably 7 ml/g or less.
• the spherical hydrophobic silica aerogel may have a peak pore radius determined by BJH method of 5 nm or more, preferably 10 nm or more, and more preferably 12 nm or more, and may have a peak pore radius determined by BJH method of 50 nm or less, preferably 40 nm or less, and more preferably 30 nm or less.
• the "pore volume determined by BJH method” refers to a pore volume which derives from a pore having a pore radius of 1 nm to 100 nm obtained by analyzing, by the BJH method (Barrett, E. R; Joyner, L. G.; Halenda, R R, J. Am. Chem. Soc. 73, 373 (1951)), the adsorption isotherm of the nitrogen adsorption side obtained in the same manner as explained in the above "specific surface area determined by BET method".
• the "peak pore radius determined by B JT method” refers to a value of a pore radius which gives a peak in a pore distribution curve (volume distribution curve) which is plotted taking on the vertical axis differentiation of the cumulative pore volume by the logarithm of the pore radius obtained by analyzing, by the BJH method, the adsorption isotherm of the nitrogen adsorption side obtained in the same manner as above, and taking the pore radius on the horizontal axis.
• the spherical hydrophobic silica aerogel may have an average particle size of 0.5 pm or more, preferably 1 pm or more, and more preferably 2 pm or more, and may have an average particle size by image analysis method of 30 pm or less, preferably 20 pm or less, and more preferably 15 pm or less.
• the “average particle size” here can be measured by image analysis method. Specifically, the value of "average particle size” is an arithmetic mean of equivalent circle diameters whch can be obtained by image analysis of a scanning electron microscope (SEM) image of, for example, no less than 2000 aerogel particles observed at a magnification of 1000 by secondary electron detection using a scanning electron microscope (SEM).
• the "equivalent circle diameter" of each aerogel particle is a diameter of a circle having an area equal to the area (projected area) of the aerogel particle in the image.
• the spherical hydrophobic silica aerogel may have an oil-absorbing capacity, which can be measured at the wet point, of 2 ml/g or more, preferably 3 ml/g or more, more preferably 4 ml/g or more, and most preferably from 5 ml/g or more, and may have an oil-absorbing capacity, measured at the wet point, of 12 ml/g or less, preferably 10 ml/g or less, more preferably 8 ml/g or less, and most preferably 7 ml/g or less.
• the oil-absorbing capacity measured at the wet point corresponds to the amount of oil that needs to be added to 100 g of particles in order to obtain a homogeneous paste. It can be measured according to the wet point method or the method for determining the oil uptake of a powder described in standard NF T 30-022.
• the oil uptake can correspond to the amount of oil adsorbed onto the available surface of the powder and/or absorbed by the powder by measuring the wet point, described below.
• An amount of m 2 g of powder is placed on a glass plate, and an oil (such as ester oil, oleric acid, or silicone oil) is then added drop-wise. After addition of 4 to 5 drops of oil to the powder, mixing is performed using a spatula, and addition of oil is continued until a conglomerate of oil and powder has formed. At this point, the oil is added one drop at a time and the mixture is then triturated with the spatula. The addition of oil is stopped when a firm, smooth paste is obtained. This paste must be able to be spread on the glass plate without cracking or forming lumps. The volume Vs (expressed in ml) of oil used is then noted. The oil uptake corresponds to the ratio Vs/m.
• an oil such as ester oil, oleric acid, or silicone oil
• an oil-absorbing capacity can be measured in accordance with JIS-K6217-4.
• the (a) spherical hydrophobic silica aerogels are those described in JP-A-2014-088307, JP-A-2014-218433, or JP-A-2018- 177620.
• the spherical hydrophobic silica aerogels may be present in an amount of 0.05% by weight or more, preferably 0.1% by weight or more, more preferably 0.3% by weight or more, and most preferably 0.5% by weight or more, and may be present in an amount of 15% by weight or less, preferably 10% by weight or less, more preferably 5% by weight or less, and most preferably 4% by weight or less, relative to the total weight of the composition.
• composition according to the present invention comprises at least one (b) silicone polymer selected from silicone resins, vinyl polymers comprising at least one siloxane dendrimer, and copolymers comprising carboxylate groups and polydimethylsiloxane groups. If two or more (b) silicone polymers are used, they may be the same or different.
• silicone resin here means a compound whose structure is three-dimensional.
• silicone resins are also known as “silicone-based resins” or “siloxane resins”.
• silicone resins also known as siloxane resins
• MDTQ silicone resins
• M corresponds to the monofunctional moiety (CH3)3SiOi/2. This moiety is regarded as mono functional because the silicon atom shares only one oxygen for the formation of the chain.
• the "M” moiety can be represented by the following structure:
• At least one of the methyl groups can be replaced so as, for example, to produce a moiety with the following formula: [R(CH3)2] S1O1 / 2, such as represented by the following structure: in which R is other than a methyl group.
• the symbol “D” corresponds to the difunctional moiety (CH 3 )Si0 2/2 in which two of the available bonds on the silicon atom are used to bond with oxygen for the formation of the polymer chain.
• the "D” moiety which is the essential component element of the dimethicone oils, can be represented by the following formula:
• T corresponds to the trifunctional moiety (CH3)Si03/2, in which three of the available bonds on the silicon atom are used to bond with oxygen for the formation of the polymer chain.
• the "T” moiety can be represented by the following structure: As in the "M” moiety, any one of the methyl groups can be replaced in “D” or "T” by an R group which is other than methyl.
• R group can represent a hydrocarbon-based radical (especially alkyl) containing from 1 to 10 carbon atoms, a phenyl group, a phenylalkyl group or a hydroxyl group.
• Q corresponds to a quadrifunctional moiety S1O4/2, in which all four available bonds on the silicon atom are used to bond with oxygen for the formation of the polymer chain.
• the "Q" moiety can be represented by the following structure:
• the silicone resin may be selected from silsesquioxane, siloxysilicate and a resin obtained by hydroxysilylation. Any siloxysilicate, silsesquioxane or resin obtained by hydroxysilylation can be used in the composition of the present invention.
• the silicone resin preferably is crosslinked.
• the silicone resin may be selected from substituted siloxysilicate, silsesquioxane and resin obtained by hydroxysilylation.
• a substituted siloxysilicate or a substituted silsesquioxane may be, for example, a siloxysilicate or a silsesquioxane in which a methyl group has been replaced by a longer carbon chain, such as an ethane, propane or butane chain.
• the carbon chain may be saturated or nonsaturated.
• silicone resins that may be used in the cosmetic composition according to the present invention, use may be made, for example, of silicone resins of MQ type, of T type or of MQT type.
• the silicone resin may be selected from siloxysilicate, such as MQ resins represented by the following formula:
• siloxysilicate may be selected from all the combinations of M and of Q moieties such as, for example, [(R)3Si] x (Si04/2)y, in which R is selected from a methyl group and a longer carbon chain.
• the silicone resin may be selected from silsesquioxane represented by the following formula:
• x has a value which can range up to several thousands and the CH3 can be replaced by an R, such as described hereinabove for the T moieties.
• the silicone resin is trimethylsiloxysilicate, for example, sold by the company Momentive Performance Materials under the name SR 1000 MQ Resin or SILSOFT 74.
• the silicone polymer used in the present invention can be a vinyl polymer having a backbone and at least one side chain, which comprises a carbosiloxane dendrimer-based unit having a carbosiloxane dendrimer structure.
• Vinyl polymers comprising at least one carbosiloxane dendrimer unit as described in patent applications WO 03/045337 and EP 963 751 by the company Dow Corning may be used in particular.
• carbosiloxane dendrimer structure in the context of the present invention represents a structure with branched groups of high molecular masses, the said structure having high regularity in the radial direction starting from the bond to the backbone.
• Such carbosiloxane dendrimer structures are described in the form of a highly-branched siloxane-silylalkylene copolymer in the laid-open Japanese patent application Kokai 9-171 154.
• R 1 may represent an aryl group or an alkyl group containing from 1 to 10 carbon atoms.
• the alkyl group may preferably be represented by a methyl group, an ethyl group, a propyl group, a butyl group, a pentyl group, an isopropyl group, an isobutyl group, a cyclopentyl group or a cyclohexyl group.
• the aryl group may preferably be represented by a phenyl group and a naphthyl group. The methyl and phenyl groups are more particularly preferred, and the methyl group is preferred among all.
• a vinyl polymer containing at least one carbosiloxane dendrimer-based unit has a molecular side chain containing a carbosiloxane dendrimer structure, and may be the product of polymerization of:
• the monomer of vinyl type that is the component (A) in the vinyl polymer is a monomer of vinyl type that contains a radical-polymerizable vinyl group.
• this monomer of vinyl type methyl methacrylate, ethyl methacrylate, n-propyl methacrylate, isopropyl methacrylate or a methacrylate of a lower alkyl analogue; glycidyl methacrylate; butyl methacrylate, butyl acrylate, n-butyl methacrylate, isobutyl methacrylate, tert-butyl acrylate, tert-butyl methacrylate, n-hexyl methacrylate, cyclohexyl methacrylate, 2-ethylhexyl acrylate, 2-ethylhexyl methacrylate, octyl methacrylate, lauryl methacrylate, stearyl acrylate, stearyl methacrylate or a higher-analogue methacrylate; vinyl acetate, vinyl propionate or a vinyl ester of a lower
• Multifunctional monomers of vinyl type may also be used.
• trimethylolpropane trimethacrylate pentaerythrityl trimethacrylate, ethylene glycol dimethacrylate, tetraethylene glycol dimethacrylate, polyethylene glycol dimethacrylate, 1 ,4-butanediol dimethacrylate, 1,6-hexanediol dimethacrylate, neopentyl glycol dimethacrylate, trimethylolpropanetrioxyethyl methacrylate, tris(2-hydroxyethyl) isocyanurate dimethacrylate, tris(2-hydroxyethyl) isocyanurate trimethacrylate, polydimethylsiloxane capped with styryl groups containing divinylbenzene groups on both ends, or similar silicone compounds containing unsaturated groups.
• a carbosiloxane dendrimer which is the component (B), may be represented by the following formula: in which Y represents a radical-polymerizable organic group as defined previously.
• radical-polymerizable organic groups Y an acryloxymethyl group, a 3-acryloxypropyl group, a methacryloxymethyl group, a
• R’ is as defined previously.
• X 1 represents a silylalkyl group that is represented by the following formula, when i is equal in which R 1 is as defined above.
• R 2 represents an alkylene group containing from 2 to 10 carbon atoms, such as an ethylene group, a propylene group, a butylene group, a hexylene group or a similar linear alkylene group; a methylmethylene group, a methylethylene group, a 1 -methylpentylene group, a 1 ,4-dimethylbutylene group or a similar branched alkylene group.
• the ethylene, methylethylene, hexylene, 1 -methylpentylene and 1 ,4-dimethylbutylene groups are preferred above all.
• R 3 represents an alkyl group containing from 1 to 10 carbon atoms, such as methyl, ethyl, propyl, butyl and isopropyl groups.
• a 1 is an integer from 0 to 3
• i is an integer from 1 to 10 that indicates the generation number, which represents the number of repetitions of the silylalkyl group.
• the carbosiloxane dendrimer may be represented by the first general formula shown below, in which Y, R 1 , R 2 and R 3 are the same as defined above, R 12 represents a hydrogen atom or is identical to R 1 ; a 1 is identical to a 1 .
• the mean total number of groups OR 3 in a molecule is within the range from 0 to
• the carbosiloxane dendrimer may be represented by the second general formula shown below, in which Y, R 1 , R 2 , R 3 and R 12 are the same as defined above; a 1 and a 2 represent the a 1 of the indicated generation.
• the mean total number of groups OR 3 in a molecule is within the range from 0 to 25.
• the carbosiloxane dendrimer is represented by the third general formula shown below, in which Y, R 1 , R 2 , R 3 and R 12 are the same as defined above; a 1 , a 2 and a 3 represent the a 1 of the indicated generation.
• the mean total number of groups OR 3 in a molecule is within the range from 0 to 79.
• a carbosiloxane dendrimer that contains a radical-polymerizable organic group may be represented by the following mean structural formulae:
• the carbosiloxane dendrimer may be manufactured according to the process for manufacturing a branched silalkylene siloxane described in Japanese patent application H09-171154.
• organosilicon compound containing a hydrogen atom linked to a silicon atom represented by the following general formula: and an organosilicon compound containing an alkenyl group, to a hydrosilylation reaction.
• the organosilicon compound may be represented by 3-methacryloxypropyltris(dimethylsiloxy)silane, 3-acryloxypropyltris(dimethylsiloxy)silane and 4-vinylphenyltris(dimethylsiloxy)silane.
• the organosilicon compound that contains an alkenyl group may be represented by vinyltris(trimethylsiloxy)silane, vinyltris(dimethylphenylsiloxy)silane, and 5 ⁇ hexenyltris(trimethylsiloxy)silane.
• the hydrosilylation reaction is performed in the presence of a chloroplatinic acid, a complex of vinylsiloxane and of platinum, or a similar transition metal catalyst.
• a vinyl polymer containing at least one carbosiloxane dendrimer-based unit may be chosen from polymers such that the carbosiloxane dendrimer-based unit is a carbosiloxane dendritic structure represented by formula (I): in which Z represents a divalent organic group, “p” is 0 or 1 , R 1 is an aryl or alkyl group containing from 1 to 10 carbon atoms and X 1 is a silylalkyl group represented by formula (II): in which R 1 is as defined above, R 2 is an alkyl ene group containing from 1 to 10 carbon atoms, R 3 is an alkyl group containing from 1 to 10 carbon atoms and X 1+1 is a group chosen from the group comprising hydrogen atoms, aryl groups and alkyl groups containing up to 10 carbon atoms, and silylalkyl groups X 1 in which the power “i” is an integer from 1 to 10 indicating the generation of the starting si
• the polymerization ratio between the components (A) and (B), in terms of the weight ratio between (A) and (B), may be within a range from 0/100 to 99.9/0.1, or even from 0.1/99.9 to 99.9/0.1 and preferably within a range from 1/99 to 99/1.
• a ratio between the components (A) and (B) of 0/100 means that the compound becomes a homopolymer of component (B).
• a vinyl polymer grafted with a carbosiloxane dendrimer may be the product of polymerization of:
• (B) from 100 to 0.1 parts by weight of an acrylate or methacrylate monomer of a tris[tri(trimethylsiloxy)silylethyldimethylsiloxy] silylpropyl carbosiloxane dendrimer.
• a vinyl polymer containing at least one carbosiloxane dendrimer-based unit may comprise a tris[tri(trimethylsiloxy)silylethyldimethylsiloxy]silylpropyl carbosiloxane dendrimer-based unit corresponding to one of the formulae:
• a vinyl polymer containing at least one carbosiloxane dendrimer-based unit used in the present invention comprises at least one butyl acrylate monomer.
• a vinyl polymer may also comprise at least one fluoro organic group.
• a fluoro vinyl polymer may be one of the polymers described in the examples of patent application WO 03/045337.
• a vinyl polymer grafted in the sense of the present invention may be conveyed in an oil or a mixture of oils, which are preferably volatile, chosen in particular from silicone oils and hydrocarbon-based oils, and mixtures thereof.
• a silicone oil that is suitable for use in the present invention may be cyclopentasiloxane.
• a hydrocarbon-based oil that is suitable for use in the present invention may be isododecane.
• Vinyl polymers grafted with at least one carbosiloxane dendrimer-based unit that may be particularly suitable for use in the present invention are the polymers sold under the names TIB 4-100, TIB 4-101, TIB 4-120, TIB 4-130, TIB 4-200, FA 4002 ID (TIB 4-202), TIB 4-220 and FA 4001 CM (TIB 4-230) by the company Dow Coming.
• the polymers sold under the names FA 4002 ID (TIB 4-202) and FA 4001 CM (TIB 4-230) by the company Dow Coming may preferably be used.
• the vinyl polymer grafted with at least one carbosiloxane dendrimer-based unit that may be used in a cosmetic composition of the present invention is an acrylates/polytrimethyl siloxymethacrylate copolymer, especially the product sold as isododecane under the name Dow Coming FA 4002 ID Silicone Acrylate by the company Dow Coming.
• copolymer comprising carboxylate groups and polydimethylsiloxane groups means here a copolymer obtained from (a) one or more carboxylic (acid or ester) monomers, and (b) one or more polydimethylsiloxane (PDMS) chains.
• carboxylic monomer means both carboxylic acid monomers and carboxylic acid ester monomers.
• the monomer (a) may be chosen, for example, from acrylic acid, methacrylic acid, maleic acid, fumaric acid, itaconic acid, crotonic acid, esters thereof and mixtures of these monomers.
• Esters that may be mentioned include the following monomers: acrylate, methacrylate, maleate, fumarate, itaconate and/or crotonate.
• the monomers in ester form are more particularly chosen from linear or branched, preferably C1-C24 and better still C1-C22 alkyl acrylates and methacrylates, the alkyl radical preferably being chosen from methyl, ethyl, stearyl, butyl and 2-ethylhexyl radicals, and mixtures thereof.
• the copolymer comprises as carboxylate groups at least one group chosen from acrylic acid and methacrylic acid, and methyl, ethyl, stearyl, butyl or 2-ethylhexyl acrylate or methacrylate, and mixtures thereof.
• polydimethylsiloxanes also known as organopolysiloxanes and abbreviated as PDMS
• PDMS polydimethylsiloxanes
• the PDMS chains that may be used to obtain the copolymer used according to the present invention comprise at least one polymerizable radical group, preferably located on at least one of the ends of the chain, i.e., the PDMS may contain, for example, a polymerizable radical group on the two ends of the chain or one polymerizable radical group on one end of the chain and one trimethylsilyl end group on the other end of the chain.
• copolymers used in the cosmetic composition of the present invention are generally obtained according to the usual methods of polymerization and grafting, for example, by free-radical polymerization (A) of a PDMS comprising at least one polymerizable radical group (for example, on one of the ends of the chain or on both ends) and (B) of at least one carboxylic monomer, as described, for example, in documents US-A-5 061 481 and US-A-5 219 560.
• the copolymers obtained generally have a molecular weight ranging from about 3000 to 200 000 and preferably from about 5000 to 100000.
• the copolymer used in the cosmetic composition of the present invention may be in its native form or in dispersed form in a solvent such as lower alcohols containing from 2 to 8 carbon atoms, for instance, isopropyl alcohol, or oils, for instance, volatile silicone oils (for example, cy clopentasiloxane) .
• a solvent such as lower alcohols containing from 2 to 8 carbon atoms, for instance, isopropyl alcohol, or oils, for instance, volatile silicone oils (for example, cy clopentasiloxane) .
• copolymers that may be used in the cosmetic composition of the present invention mention may be made, for example, of copolymers of acrylic acid and of stearyl acrylate containing polydimethylsiloxane grafts, copolymers of stearyl methacrylate containing polydimethylsiloxane grafts, copolymers of acrylic acid and of stearyl methacrylate containing polydimethylsiloxane grafts, copolymers of methyl methacrylate, butyl methacrylate, 2-ethylhexyl acrylate and stearyl methacrylate containing polydimethylsiloxane grafts.
• KP-561 acrylates/dimethicone
• KP-541 in which the copolymer is dispersed at 60% by weight in isopropyl alcohol
• KP-545 in which the copolymer is dispersed at 30% in cyclopentasiloxane (CTFAname: acrylates/dimethicone and cycl
• KP561 is preferably used; this copolymer is not dispersed in a solvent, but is in waxy form, its melting point being about 30°C.
• the (b) silicone polymer is selected from silicone resins and vinyl polymers comprising at least one siloxane dendrimer.
• the (b) specific silicone polymer(s) may be present in an amount of 0.1% by weight or more, preferably 1% by weight or more, more preferably 2% by weight or more, and most preferably 3% by weight or more, and may be present in an amount of 20% by weight or less, preferably 15% by weight or less, more preferably 10% by weight or less, and most preferably 8% by weight or less, relative to the total weight of the composition.
• composition according to the present invention may comprise at least one oil. If two or more oils are used, they may be the same or different.
• oils means a fatty compound or substance which is in the form of a liquid or a paste (non-solid) at room temperature (25°C) under atmospheric pressure (760 mmHg).
• oils those generally used in cosmetics can be used alone or in combination thereof. These oils may be volatile or non-volatile.
• the oil may be a non-polar oil such as a hydrocarbon oil, a silicone oil, or the like; a polar oil such as a plant or animal oil and an ester oil or an ether oil; or a mixture thereof.
• the oil may be selected from the group consisting of oils of plant or animal origin, synthetic oils, silicone oils, hydrocarbon oils and fatty alcohols.
• plant oils mention may be made of, for example, linseed oil, camellia oil, macadamia nut oil, com oil, olive oil, avocado oil, sasanqua oil, castor oil, safflower oil, jojoba oil, sunflower oil, almond oil, rapeseed oil, sesame oil, soybean oil, peanut oil, and mixtures thereof.
• animal oils mention may be made of, for example, squalene and squalane.
• synthetic oils mention may be made of alkane oils such as isododecane and isohexadecane, ester oils, ether oils, and artificial triglycerides.
• the ester oils are preferably liquid esters of saturated or unsaturated, linear or branched C1-C26 aliphatic monoacids or polyacids and of saturated or unsaturated, linear or branched C1-C26 aliphatic monoalcohols or polyalcohols, the total number of carbon atoms of the esters being greater than or equal to 10.
• esters of monoalcohols Preferably, for the esters of monoalcohols, at least one from among the alcohol and the acid from which the esters of the present invention are derived is branched.
• monoesters of monoacids and of monoalcohols mention may be made of ethyl palmitate, ethyl hexyl palmitate, isopropyl palmitate, dicaprylyl carbonate, alkyl myristates such as isopropyl myristate or ethyl myristate, isocetyl stearate, 2-ethylhexyl isononanoate, isononyl isononanoate, isodecyl neopentanoate, and isostearyl neopentanoate.
• ether oils mention may be made of, for example, ether oils with a short hydrocarbon chain or chains, such as dicaprylyl ether.
• artificial triglycerides mention may be made of, for example, capryl caprylyl triglycerides, glyceryl trimyristate, glyceryl tripalmitate, glyceryl trilinolenate, glyceryl trilaurate, glyceryl tricaprate, glyceryl tricaprylate, glyceryl tri(caprate/caprylate), and glyceryl tri(caprate/caprylate/linolenate).
• capryl caprylyl triglycerides glyceryl trimyristate, glyceryl tripalmitate, glyceryl trilinolenate, glyceryl trilaurate, glyceryl tricaprate, glyceryl tricaprylate, glyceryl tri(caprate/caprylate), and glyceryl tri(caprate/caprylate/linolenate).
• silicone oils mention may be made of, for example, linear organopolysiloxanes such as alkyldimethicone, in particular dimethylpolysiloxane and methylhydrogenpolysiloxane; phenymethicone, such as diphenylsiloxy phenyl trimethicone diphenylsiloxy phenyl trimethicone; and cyclic organopolysiloxanes such as cyclohexasiloxane, octamethylcyclotetrasiloxane, decamethylcyclopentasiloxane, dodecamethylcyclohexasiloxane, and the like; and mixtures thereof.
• linear organopolysiloxanes such as alkyldimethicone, in particular dimethylpolysiloxane and methylhydrogenpolysiloxane
• phenymethicone such as diphenylsiloxy phenyl trimethicone diphen
• the silicone oil is chosen from liquid polydialkylsiloxanes, especially liquid polydimethylsiloxanes (PDMS, dimethicone) and liquid polyorganosiloxanes comprising at least one aryl group.
• PDMS liquid polydimethylsiloxanes
• dimethicone liquid polydimethylsiloxanes
• liquid polyorganosiloxanes comprising at least one aryl group.
• These silicone oils may also be organomodified.
• the organomodified silicones that can be used in accordance with the present invention are silicone oils as defined above and comprise in their structure one or more organofunctional groups attached via a hydrocarbon-based group.
• Hydrocarbon oils may be chosen from: linear or branched, optionally cyclic, C6-C16 lower alkanes. Examples that may be mentioned include hexane, undecane, dodecane, tridecane, and isoparaffins, for instance isohexadecane, isododecane, and isodecane; and linear or branched hydrocarbons containing more than 16 carbon atoms, such as liquid paraffins, liquid petroleum jelly, polydecenes and hydrogenated polyisobutenes such as Parleam®, and squalane.
• fatty in the fatty alcohol means the inclusion of a relatively large number of carbon atoms. Thus, alcohols which have 4 or more, preferably 6 or more, and more preferably 12 or more carbon atoms are encompassed within the scope of fatty alcohols.
• the fatty alcohol may be saturated or unsaturated.
• the fatty alcohol may be linear or branched.
• the fatty alcohol may have the structure R-OH wherein R is chosen from saturated and unsaturated, linear and branched radicals containing from 4 to 40 carbon atoms, preferably from 6 to 30 carbon atoms, and more preferably from 12 to 20 carbon atoms.
• R may be chosen from C12-C20 alkyl and C12-C20 alkenyl groups. R may or may not be substituted with at least one hydroxyl group.
• the fatty alcohol mention may be made of lauryl alcohol, cetyl alcohol, stearyl alcohol, isostearyl alcohol, behenyl alcohol, undecylenyl alcohol, myristyl alcohol, octyldodecanol, hexyldecanol, oleyl alcohol, linoleyl alcohol, palmitoleyl alcohol, arachidonyl alcohol, erucyl alcohol, and mixtures thereof. It is preferable that the fatty alcohol be a saturated fatty alcohol.
• the fatty alcohol may be selected from straight or branched, saturated or unsaturated C6-C30 alcohols, preferably straight or branched, saturated C6-C30 alcohols, and more preferably straight or branched, saturated C12-C20 alcohols.
• saturated fatty alcohols mention may be made of lauryl alcohol, cetyl alcohol, stearyl alcohol, isostearyl alcohol, behenyl alcohol, undecylenyl alcohol, myristyl alcohol, octyldodecanol, hexyldecanol, and mixtures thereof.
• cetyl alcohol, stearyl alcohol, octyldodecanol, hexyldecanol, or a mixture thereof (e.g., cetearyl alcohol) as well as behenyl alcohol can be used as a saturated fatty alcohol.
• the amount of the oil(s) in the composition according to the present invention may range from 1 to 60% by weight, preferably from 2 to 50% by weight, and more preferably from 5 to 40% by weight, relative to the total weight of the composition.
• the composition according to the present invention may comprise at least one cosmetically acceptable hydrophilic organic solvent.
• the composition in the liquid form may include the cosmetically acceptable hydrophilic organic solvent.
• the cosmetically acceptable hydrophilic organic solvent(s) may include, for example, substantially linear or branched lower mono-alcohols having from 1 to 8 carbon atoms, such as ethanol, propanol, butanol, isopropanol, and isobutanol; aromatic alcohols, such as benzyl alcohol and phenylethyl alcohol; polyols or polyol ethers, such as propylene glycol, dipropylene glycol, isoprene glycol, butylene glycol, glycerine, propanediol, caprylyl glycol, sorbitol, ethylene glycol monomethyl, monoethyl and monobutyl ethers, propylene glycol ethers, such as propylene glycol monomethylether, diethylene glycol alkyl ethers, such
• the amount of the cosmetically acceptable hydrophilic organic solvent(s) in the composition according to the present invention, in particular in the liquid form, may range from 0.1 to 25% by weight, preferably from 0.5 to 20% by weight, and more preferably from 1 to 15% by weight, relative to the total weight of the composition.
• composition according to the present invention may comprise at least one emulsifier chosen from amphoteric, anionic, cationic, or nonionic surfactants, used alone or as a mixture.
• the composition comprises at least one nonionic surfactant.
• the composition in the liquid form preferably O/W or W/O emulsion form, may include the emulsifier(s).
• nonionic surfactants usable in the compositions of the invention may include polyethoxylated fatty alcohols or polyglycerolated fatty alcohols, such as the adducts of ethylene oxide with lauryl alcohol, especially those containing from 9 to 50 oxyethylene units (Laureth-9 to Laureth-50 as the INCI names), in particular Laureth-9; esters of polyols and of a fatty acid possessing a saturated or unsaturated chain comprising, for example, from 8 to 24 carbon atoms, and their oxyalkylenated derivatives, that is to say comprising oxyethylene and/or oxypropylene units, such as esters of glycerol and of a C8-C24 fatty acid, and their oxyalkylenated derivatives, in particular polyoxyethylenated glyceryl stearate (mono-, di- and/or tristearate), for examples PEG-20 glyceryl triisostearate; esters of sugar and of a
• the emulsifier can be silocone crosslinked emulsifiers, such as polyoxyalkylenated silicone elastomers and polyglycerolated silicone elastomers.
• polyoxyalkylenated silicone elastomers use may be made of those having the following INCI names: Dimethicone/PEG-10/15 Crosspolymer, PEG-15/Lauryl Dimethicone Crosspolymer, PEG-10/Lauryl Dimethicone Crosspolymer, PEG- 12 Dimethicone Crosspolymer, PEG- 10 Dimethicone Crosspolymer, PEG- 10 Dimethicone/Vinyl Dimethicone Crosspolymer, PEG- 12 Dimethicone/PPG-20 Crosspolymer, and mixtures thereof.
• polyglycerolated silicone elastomers mention can be made of the following compounds having the INCI name:
• Dimethicone/Polyglycerin-3 Crosspolymer Lauryl Dimethicone/Polyglycerin-3 Crosspolymer, and mixtures thereof.
• KSG-710® INCI name: Dimethicone/Polyglycerin-3 Crosspolymer and Dimethicone
• KSG-810® INCI name: Mineral Oil and Lauryl Dimethicone/Polyglycerin-3 Crosspolymer
• KSG-820® INCI name: Isododecane and Lauryl Dimethicone/Polyglycerin-3 Crosspolymer
• KSG-830® INCI name: Triethylhexanoin and Lauryl Dimethicone/Polyglycerin-3 Crosspolymer
• KSG-840® INCI name: Squalane and Lauryl Dimethicone/Polyglycerin-3 Crosspolymer.
• the amount of the emulsifier(s) in the composition may be from 0.1 to 15% by weight, preferably from 0.5 to 10% by weight, and more preferably from 1 to 6% by weight, relative to the total weight of the composition.
• composition according to the present invention may comprise at least one thickener.
• the thickener may be hydrophilic or lipophilic.
• the thickener may be included in the composition in liquid form.
• the lipophilic thickener according to the present invention may be chosen from:
• organomodified clays which are clays treated with compounds chosen especially from quaternary amines and tertiary amines.
• Organomodified clays that may be mentioned include organomodified bentonites, such as the product sold under the name Bentone 34 by the company Rheox, and organomodified hectorites such as the products sold under the names Bentone 27 and Bentone 38 by the company Rheox.
• modified clays such as modified magnesium silicate (Bentone gel ® VS38 from Rheox), modified hectorites such as hectorite modified with a CIO to C22 fatty acid ammonium chloride, for instance hectorite modified with distearyldimethylammonium chloride (disteardimonium hectorite) such as the product sold under the name Bentone 38VCG by the company Elementis or the product sold under the name Bentone 38 CE by the company Rheox, or the product sold under the name Bentone Gel ® V5 5V by the company Elementis, or the product sold under the name Bentone gel ® ISD V by the company Elementis;
• modified clays such as modified magnesium silicate (Bentone gel ® VS38 from Rheox), modified hectorites such as hectorite modified with a CIO to C22 fatty acid ammonium chloride, for instance hectorite modified with distearyldimethylammonium chloride (dist
• hydrophobic fumed silicas which may be obtained by modification of the surface of the silica via a chemical reaction that generates a reduction in the number of silanol groups, these groups possibly being substituted especially with hydrophobic groups.
• the hydrophobic groups can be trimethylsiloxyl groups, which are obtained especially by treating fumed silica in the presence of hexamethyldisilazane.
• Silicas thus treated are known as "Silica silylate" according to the CTFA dictionary (6th edition, 1995). They are sold, for example, under the references Aerosil R812 ® by the company Degussa and Cab-O-Sil TS-530 ® by the company Cabot.
• the hydrophobic groups can be dimethylsilyloxyl or polydimethylsiloxane groups, which are obtained especially by treating fumed silica in the presence of polydimethylsiloxane or dimethyl dichlorosilane.
• Silicas thus treated are known as "Silica dimethyl silylate” according to the CTFA dictionary (6th edition, 1995). They are sold, for example, under the references Aerosil R972 ® and Aerosil R974 ® by the company Degussa and Cab-O-Sil TS-610 ® and Cab-O-Sil TS-720 ® by the company Cabot.
• the hydrophilic nonionic polysaccharide thickener may be chosen, for example, from glucans, modified and unmodified starches (such as those derived, for example, from cereals, for instance wheat, com or rice, from vegetables, for instance yellow pea, and tubers, for instance potato or cassaya), amylose, amylopectin, glycogen, dextrans, celluloses and derivatives thereof (methylcelluloses, hydroxyalkylcelluloses, ethyl hydroxyethylcellu loses, and carboxymethylcelluloses), mannans, xylans, lignins, arabans, galactans, galacturonans, chitin, chitosans, glucuronoxylans, arabinoxylans, xyloglucans, glucomannans, pectic acids and pectins, alginic acid and alginates, arabinogalactans, carrageenans, agars, glycosaminoglucans
• the amount of the thickener(s) in the composition may be from 0.1 to 10% by weight, preferably from 0.2 to 5% by weight, and more preferably from 0.3 to 3% by weight, relative to the total weight of the composition.
• composition according to the present invention may comprise at least one inorganic UV filter. Two or more inorganic UV filters can be combined.
• the inorganic UV filter used for the present invention may be active in the UV-A and/or UV-B region.
• the inorganic UV filter may be hydrophilic and/or lipophilic.
• the inorganic UV filter is preferably insoluble in solvents such as water and ethanol commonly used in cosmetics.
• the inorganic UV filter be in the form of fine particles such that the mean (primary) particle diameter thereof ranges from 1 nm to 50 nm, preferably 5 nm to 40 nm, and more preferably 10 nm to 30 nm.
• the mean (primary) particle size or mean (primary) particle diameter here is an arithmetic mean diameter.
• the inorganic UV filter can be selected from the group consisting of metal oxides which may or may not be coated, and mixtures thereof.
• the inorganic UV filters may be selected from titanium oxide (amorphous or crystalline in the rutile and/or anatase form), iron oxide, zinc oxide, zirconium oxide or cerium oxide, which are all UV photoprotective agents that are well known per se.
• the inorganic UV filter may or may not be coated.
• the inorganic UV filter may have at least one coating.
• the coating may comprise at least one compound selected from the group consisting of alumina, silica, aluminum hydroxide, silicones, silanes, fatty acids or salts thereof (such as sodium, potassium, zinc, iron, or aluminum salts), fatty alcohols, lecithin, amino acids, polysaccharides, proteins, alkanolamines, waxes such as beeswax, (meth)acrylic polymers, organic UV filters, and (per)fluoro compounds.
• the coated inorganic UV filters may be titanium oxides coated with: silica, such as the product “Sunveil” from Ikeda; silica and iron oxide, such as the product “Sunveil F” from Ikeda; silica and alumina, such as the products “Microtitanium Dioxide MT 500 SA” from Tayca, “Tioveil” from Tioxide, and “Mirasun TiW 60" from Rhodia; alumina, such as the products “Tipaque TTO-55 (B)” and “Tipaque TTO-55 (A)” from Ishihara, and "UVT 14/4" from Kemira; alumina and aluminum stearate, such as the product "Microtitanium Dioxide MT 100 T, MT 100 TX, MT 100 Z or MT-01" from Tayca, the products “Solaveil CT-10 W” and “Solaveil CT 100” from Uniqema, and the product "Eusole
• stearic acid and aluminum hydroxide such as the product “MT-100 TV” from Tayca, with a mean primary particle diameter of 15 nm
• dimethicone and stearic acid and aluminum hydroxide such as the product “SA-TTO-S4” from Miyoshi Kasei, with a mean primary particle diameter of 15 nm
• silica such as the product “MT-100 WP” from Tayca, with a mean primary particle diameter of 15 nm
• dimethicone and silica and aluminum hydroxide such as the product “MT-Y02” and “MT-Y-110 M3S” from Tayca, with a mean primary particle diameter of 10 nm
• dimethicone and aluminum hydroxide such as the product “SA-TTO-S3” from Miyoshi Kasei, with a mean primary particle diameter of 15 nm
• dimethicone and alumina such as the product “UV TITAN Ml 70” from Sachtleben
• Titanium Dioxide and) Zinc Oxide (and) Talc (and) Hydrogen Dimethicone (and) Aluminum Hydroxide).
• the amount of the inorganic UV filter(s) in the composition may be from 0.5% by weight or more, preferably 1% by weight or more, and more preferably 2% by weight or more, and 20% by weight or less, preferably 15% by weight or less, and more preferably 10% by weight, relative to the total weight of the composition.
• composition according to the present invention may include at least one organic UV filter.
• the organic UV filter may be selected from the group consisting of anthranilic derivatives; dibenzoylmethane derivatives; cinnamic derivatives, such as ethylhexyl methoxycinnamate; salicylic derivatives such as homosalate (homomenthyl salicylate) and ethylhexyl salicylate; camphor derivatives; benzophenone derivatives; b,b-diphenylacrylate derivatives; triazine derivatives; benzotriazole derivatives; benzalmalonate derivatives; benzimidazole derivatives; imidazoline derivatives; bis-benzoazolyl derivatives; p-aminobenzoic acid (PABA) and derivatives thereof; benzoxazole derivatives; screening polymers and screening silicones; dimers derived from a-alkylstyrene; 4,4-diarylbutadienes; octocrylene and derivatives thereof, guaiazu
• the amount of the organic UV filter(s) in the composition may be from 0.1% by weight or more, preferably 0.2% by weight or more, and more preferably 1% by weight or more, and 20% by weight or less, preferably 15% by weight or less, and more preferably 10% by weight, relative to the total weight of the composition.
• composition according to the present invention may comprise at least one filler other than the (a) spherical hydrophobic silica aerogel. Two or more fillers can be combined.
• the filler can be inorganic or organic.
• the filler also can be silicone powder.
• inorganic filler mention may be made of talc, mica, silica, hollow silica, magnesium aluminum silicate, titanium dioxide, kaolin, bentone, calcium carbonate, magnesium hydrogen carbonate, hydroxyapatite, boron nitride, fluorphlogopite, sericite, calcinated talc, calcinated mica, calcinated sericite, synthetic mica, perlite, lauroyl lysine, metal soap, bismuth oxychloride, barium sulfate, magnesium sulfate, magnesium carbonate, and mixtures thereof, optionally hydrophilic- or hydrophobic-treated.
• the inorganic filler may have been surface-treated with least one silicone oil and/or at least one non- silicone oil.
• the silicone oil may be selected from polydialkylsiloxanes such as polydimethylsiloxane, polyalkylarylsiloxanes such as polymethylphenylsiloxane, polydiarylsiloxanes such as polydiphenylsiloxanes, polyalkylhydrogensiloxanes such as methylhydrogenpolysiloxane, and modified-polysiloxanes.
• polydialkylsiloxanes such as polydimethylsiloxane
• polyalkylarylsiloxanes such as polymethylphenylsiloxane
• polydiarylsiloxanes such as polydiphenylsiloxanes
• polyalkylhydrogensiloxanes such as methylhydrogenpolysiloxane
• modified-polysiloxanes modified-polysiloxanes.
• non-silicone oil a vegetable oil, preferably a vegetable oil solid at ambient temperature, may be used.
• the non-silicone oil is a hydrogenated vegetable oil.
• the hydrogenated vegetable oil is a hydrogenated palm oil.
• the inorganic filler can be colorants or pigments.
• pigments should be understood to mean white or colored, mineral or organic particles of any shape, which are insoluble in a physiological medium, and which are intended to color the composition.
• the pigments may be white or colored, and mineral and/or organic.
• titanium dioxide such as pigmentary titanium dioxide rutile type, optionally surface-treated, zirconium oxide or cerium oxide, and also zinc oxide, iron (black, yellow or red) oxide or chromium oxide, silica, mica, fluorphlogopite, sericite, kaolin, aluminum hydroxide, manganese violet, ultramarine blue, chromium hydrate and ferric blue, and metal powders, for instance aluminum powder and copper powder.
• the pigments can be composite pigments.
• the composite pigments may comprise at least one metal oxide and at least one aluminum oxide (or alumina).
• the composite pigment may also additionally comprise silica particles.
• the composite pigment may also additionally comprise dioxide titanium.
• Covalumine Sonoma Red AS® (INCI name: Alumina (and) Cl 77491 (and) Triethoxycaprylylsilane); Covalumine Sonoma Yellow AS® (INCI name: Alumina (and) Cl 77492 (and) Triethoxycaprylylsilane); Covalumine Sonoma Black AS® (INCI name: Alumina (and) Cl 77499 (and) Triethoxycaprylylsilane) (and) silica); and Covalumine Atlas White AS® (INCI name: Alumina (and) Titanium Oxide (and) Triethoxycaprylylsilane), and that of INCI name: Titanium Dioxide (and) Triethoxycaprylylsilane (and) Alumina (and) Silica.
• the pigments may be surface treated, for example.
• Surface treatment compounds may include a hydrophobic agent, such as silanes, preferably a Ci-C2o-alkylsilane, more preferentially atri(Ci-C4)alkoxy(Ci-Ci2)alkylsilane such as triethoxycaprylylsilane, silicones, such as organosilicone, di-organosilicone, dimethicones, hydrogen dimethicone, methicones, polyurethanes, silicone-polyurethanes, and fluoro- or perfluoro-derivatives thereof, fatty acid soaps, C9-15 fluoroalcohol phosphates, acrylate/dimethicone copolymers, mixed C9-C15 fluoroalcohol phosphate/silicone copolymers, lecithins or hydrogenated lecithin, waxes, such as camauba wax, polyethylene, chitosan and optionally
• hydrophobic agents may include isopropyl titanium triisostearate (ITT), ITT and dimethicone (ITT/dimethicone) cross-polymers, ITT and amino acid, ITT/triethoxycaprylylsilane crosspolymer, fatty acids (e.g., stearates), HDI/trimethylol hexyllactone crosspolymer, PEG-8 methyl ether triethoxysilane, aloe, jojoba ester, and Magnesium Myristate (MM).
• ITT isopropyl titanium triisostearate
• ITT/dimethicone dimethicone
• amino acid e.g., amino acid
• ITT/triethoxycaprylylsilane crosspolymer e.g., stearates
• fatty acids e.g., stearates
• HDI/trimethylol hexyllactone crosspolymer e.
• the inorganic filler herein may be different from the inorganic UV filter as explained above.
• organic filler mention may be made of acrylic polymer powders, silicone powders, wax powders, polyamide powders, urethane polymer powders, tetrafluoroethylene polymer powders, polyacrylonitrile powders, poly- b -alanine powders, polyethylene powders, polytetrafluoroethylene powders, (meth)acrylic or (meth)acrylate powders, lauroyllysine, starch, cellulose powder, tetrafluoroethylene polymer powders and mixtures thereof.
• the (meth)acrylic or (meth)acrylate powders can include, for example, polymethylmethacrylate crosspolymer, methyl methacrylate/glycol dimethacrylate crosspolymer, polymethyl methacrylate/ethylene glycol dimethacrylate powders, polyallyl methacrylate/ethylene glycol dimethacrylate powders, and ethylene glycol dimethacrylate/lauryl methacrylate copolymer powders.
• polyamide powders mention may be made of those sold under the name “Orgasol” by the company Atochem. These polyamide powder particles are moreover known according to their various physicochemical properties under the name “Nylon 12” or “Nylon 6”.
• the polyamide powders useful in the present invention may also include those sold under the name SP500 by the company TORAY.
• the amount of the filler(s) in the composition may be 1 % by weight or more, preferably 2% by weight or more, and more preferably 3% by weight or more, and 80% by weight or less, preferably 70% by weight or less, and more preferably 65% by weight or less, relative to the total weight of the composition.
• the composition according to the present invention may preferably include at least one pH adjuster.
• the adjustment of the pH to the desired value may be carried out conventionally by addition of a pH adjuster, such as an organic or inorganic base or an organic or inorganic acid or salts thereof to the composition.
• the base includes, for example, ammonium hydroxide, sodium hydroxide, sodium carbonate or a primary, secondary or tertiary (poly) amine, such as monoethanolamine, diethanolamine, triethanolamine, isopropanolamine or 1,3-propanediamine.
• the organic acid includes, for example, a carboxylic acid, a citric acid, and a lactic acid.
• the inorganic acid includes, for example, a hydrochloric acid, a nitric acid, orthophosphoric acid and a sulphonic acid.
• the salt includes, for example, sodium phosphate and trisodium phosphate.
• the pH adjuster(s) may be present in an amount sufficient to adjust the pH of the composition to the desired value, for example, ranging from 0.01% to 10% by weight, preferably from 0.1% to 5% by weight, and more preferably from 0.2% to 3% by weight relative to the total weight of the composition.
• composition according to the present invention can comprise water.
• the amount of water in the composition may be from 1% by weight or more, preferably 5% by weight or more, more preferably 10% by weight or more, and even more preferably 15% by weight or more, and 70% by weight or less, preferably 60% by weight or less, and more preferably 50% by weight or less, relative to the total weight of the composition.
• the amount of water in the composition may be 5% by weight or less, preferably 3% by weight or less, and more preferably 1% by weight or less.
• composition according to the present invention in the solid form does not contain water.
• compositions according to the present invention may also contain various adjuvants conventionally used in compositions for cosmetic products, which may be selected from a physiologically acceptable medium, cationic, anionic, non-ionic, amphoteric or zwitterionic .
• polymers or mixtures thereof antioxidants, such as tocopherol, neutralizing agents, such as triethanolamine, sequestering agents, such as disodium EDTA, plant extracts, such as rosa centifolia flower extract, fragrances, emollients, dispersing agents, dyes and/or pigments, film-forming agents and/or thickeners, ceramides, preservatives, such as phenoxy ethanol and chlorphenesin, co-preservatives, such as decylene glycol, ethylhexyl glycerin, and caprylyl glycol, and opacifying agents.
• antioxidants such as tocopherol
• neutralizing agents such as triethanolamine
• sequestering agents such as dis
• the adjuvants may be present in the composition of the present invention in an amount preferably ranging from 0.01% to 30% by weight, preferably from 0.1% to 20% by weight, and more preferably from 0.5% to 10% by weight, relative to the total weight of the composition.
• the present invention also relates to a cosmetic process for a keratinous substance, such as skin, comprising applying to the keratinous substrate the composition according to the present invention.
• composition according to the present invention may be intended for use as a cosmetic composition.
• the cosmetic composition according to the present invention may be intended for application onto keratinous substances, for example the skin, scalp, hair, mucosa such as lips, and nails, in particular the skin for instance that of the face.
• composition according to the present invention may be used as a skin cosmetic composition, preferable a skin makeup composition, and more preferably a foundation. Therefore, the process according to the present invention also relates to a process for applying make-up to a keratinous substance.
• the composition can be applied on a keratinous substance by a general method, for example, using the hands or a sponge applicator.
• the present application also relates to a use of a combination of (a) at least one spherical hydrophobic silica aerogel, and (b) at least one silicone polymer selected from silicone resins, vinyl polymers comprising at least one siloxane dendrimer, and copolymers comprising carboxylate groups and polydimethylsiloxane groups, to provide a composition for a keratin substance, such as skin, in particular a cosmetic composition for applying make-up to keratinous substance, such as skin.
• a long-lastingness property of a matte finish and color and a texture were evaluated on each of the following compositions by a sensory panel evaluation by 18 panelists. Each property was assessed with the following criteria.
• the composition was easy to spread on the skin and provided a slippery and smooth texture
• Each of the liquid foundation compositions in the form of an O/W emulsion according to Example 1 (Ex. 1) and Comparative Examples 1 to 3 (Comp. Ex. 1 to Comp. Ex. 3) was prepared by mixing the ingredients listed in the following Table 1 homogeneously. The compositions are also shown in the following Table 1.
• spherical hydrophobic silica aerogel was obtained from TOKUYAMA, and acrylates/polytrimethyl siloxymethacrylate copolymer was obtained from Dow Coming (product name: Dow Coming FA 4002 ID Silicone Acrylate).
• This spherical hydrophobic silica aerogel had an average primary particle size of 10 pm, an average circularity of 0.88, a BET specific surface area of 592 m 2 /g, a pore volume by the BJH method of 4.0 ml/g, an oil absorption capacity measured with JIS-K6217-4 of 6.8 mL/g, and a peak pore radius by the BJH method of 20 nm.
• Example 1 As shown in Table 1 above, the composition according to Example 1, which includes the combination of the spherical hydrophobic silica aerogel and the specific silicone polymer, i.e. acrylates/polytrimethyl siloxymethacrylate copolymer, had a good lomg-lastingness of matte finish and color, and also provided good texture.
• the specific silicone polymer i.e. acrylates/polytrimethyl siloxymethacrylate copolymer
• compositions Each of the liquid make-up base compositions in the form of an O/W emulsion according to Example 4 (Ex. 4) and Comparative Example 4 (Comp. Ex. 4) was prepared by mixing the ingredients listed in the following Table 2 homogeneously. The compositions are also shown in the following Table 2.
• the spherical hydrophobic silica aerogel was the same as that used in Example 1.
• Trimethylsiloxysilicate was obtained from Momentive Performance Materials (product name: SR 1000 MQ Resin).
• the composition according to Example 2 which includes the combination of the spherical hydrophobic silica aerogel and the specific silicone polymer, i.e. trimethylsiloxysilicate, had a good long-lastingness of matte finish and color, and also provided good texture.

Landscapes

• Health & Medical Sciences (AREA)
• Life Sciences & Earth Sciences (AREA)
• Animal Behavior & Ethology (AREA)
• General Health & Medical Sciences (AREA)
• Public Health (AREA)
• Veterinary Medicine (AREA)
• Birds (AREA)
• Epidemiology (AREA)
• Chemical & Material Sciences (AREA)
• Inorganic Chemistry (AREA)
• Cosmetics (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=74505319

Family Applications (1)

Country Status (2)

Citations (10)

• 2019
  • 2019-12-24 JP JP2019232885A patent/JP2021104935A/ja active Pending
• 2020
  • 2020-12-18 WO PCT/JP2020/049307 patent/WO2021132734A1/en active Application Filing

Patent Citations (10)

Non-Patent Citations (3)

Also Published As

Similar Documents

Legal Events