Classifications

• • 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
  • A61K8/30—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds
  • A61K8/63—Steroids; Derivatives 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
  • A61K8/30—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds
  • A61K8/33—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds containing oxygen
  • A61K8/37—Esters of carboxylic acids
• • 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
  • A61K8/30—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds
  • A61K8/33—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds containing oxygen
  • A61K8/37—Esters of carboxylic acids
  • A61K8/375—Esters of carboxylic acids the alcohol moiety containing more than one hydroxy group
• • 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
  • A61K8/30—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds
  • A61K8/33—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds containing oxygen
  • A61K8/39—Derivatives containing from 2 to 10 oxyalkylene groups
• • 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
  • A61Q1/04—Preparations containing skin colorants, e.g. pigments for lips
  • A61Q1/06—Lipsticks

Definitions

• the present invention relates to lipophilic personal care compositions comprising a polyglycerin fatty acid ester, an N-long chain acyl acidic amino acid ester of sterol, and a dimer acid ester.
• the composition is particularly useful for making cosmetic compositions such as lipstick, lipgloss, foundations, and creams.
• Lipsticks are primarily made of lipophilic or hydrophobic materials. Lipsticks designed for providing a moisturizing benefit to the lips have a tendency of further containing polar solvents, or other moisturizing components which are more or less hydrophilic.
• association structures and gel structures has been suggested to bind such polar solvents in the lipophilic matrix of the lipstick, such as in PCT publication WO 02/26198. While such lipstick compositions provide a favorable moisturizing benefit to the lips, some compositions were unsatisfactory in physical stability, and some others required uncommon equipment or extra processing steps.
• compositions utilizing N-long chain acyl acidic amino acid ester of sterol are disclosed, for example, in Japanese publication A-7-258019. While it is disclosed that such composition provides non-sticky feel and high moisturizing benefit, further improvement is desired.
• the present invention is directed to a lipophilic personal care composition
• a lipophilic personal care composition comprising by weight: (a) from about 5% to about 50% of a polyglycerin fatty acid ester having a polyglycerin of 2-15 units and at least 5 fatty acid residues attached thereto, wherein the fatty acid residue has 18 to 24 carbons; (b) from about 5% to about 50% of an N-long chain acyl acidic amino acid ester of sterol having formula (I):
• X and Y is an ester residue of sterol selected from the group consisting of phytosterol, cholesterol, lanosterol, stigmasterol, its hydrogenates, and its derivatives, and the other is selected from H, an alkyl or alkenyl of 8-30 carbons, and ester residue of monohydric solid alcohol of 12-38 carbons;
• COR is a long chain acyl group of 8-22 carbons; and n is an integer of 1 or 2; and having a water holding capability of at least 400%, and is liquid at 25°C; and (c) from about 5 % to about 50% of a dimer acid ester.
• the present invention is further directed to a lipophilic personal care composition which satisfies the need for improved texture of the skin, while also being moisturizing on the skin, provides a fresh feel upon use, and having good physical stability.
• the composition of the present invention comprises a polyglycerin fatty acid ester having a polyglycerin of 2-15 units and at least 5 fatty acid residues attached thereto, wherein the fatty acid residue has 18 to 24 carbons.
• the polyglycerin fatty acid ester useful herein is liquid at room temperature, has high water holding capability, and is compatible with many oily materials useful for making lipophilic personal care compositions. It has been surprisingly found that, when the polyglycerin fatty acid ester is combined with N-long chain acyl acidic amino acid ester of sterol and dimer acid ester, a lipophilic composition having a fresh feel is obtained. Such a benefit is unexpected, in that all three such components have a high water holding capability, and may have a tendency to provide a sticky feel.
• the polyglycerin fatty acid ester is comprised by weight of the entire composition at from about 5% to about 50%.
• the polyglycerin fatty acid ester is comprised by weight of the entire composition at from about 5% to about 30%, preferably from about 10% to about 25%.
• Polyglycerin fatty acid esters useful herein include esters made of polyglyceryl-2, polyglyceryl-4, polyglyceryl-6, or polyglyceryl-10; with at least 5 isostearate residues.
• polyglycerin fatty acid esters useful herein include polyglyceryl-10 nonaisostearate with tradename S-FACE IS-1009P available from Sakamoto Pharmaceuticals. N-long Chain Acyl Acidic Amino Acid Ester or Diester of Sterol
• composition of the present invention comprises a N-long chain acyl acidic amino acid ester of sterol having formula (I):
• X and Y is an ester residue of sterol selected from the group consisting of phytosterol, cholesterol, lanosterol, stigmasterol, its hydrogenates, and its derivatives, and the other is selected from H, an alkyl or alkenyl of 8-30 carbons, and ester residue of monohydric solid alcohol of 12-38 carbons;
• COR is a long chain acyl group of 8-22 carbons; and
• n is an integer of 1 or 2.
• the ester may be a monoester or diester.
• the one of X and Y which is not the ester residue of sterol is selected from 2- octyldodecyl alcohol, isostearyl alcohol, oleyl alcohol, cetyl alcohol, benenyl alcohol, and mixtures thereof.
• the N-long chain acyl acidic amino acid ester of sterol of the present invention has a water holding capability of at least 400%, and is liquid at 25°C. By having such physical properties, it is believed that the N-long chain acyl acidic amino acid ester of sterol herein is effective in alleviating damaged skin, compatible with many oily materials useful for making lipophilic personal care compositions, and provide a favorable feel to the skin.
• the N-long chain acyl acidic amino acid ester of sterol is comprised by weight of the entire composition at from about 5% to about 50%.
• the N-long chain acyl acidic amino acid ester of sterol is comprised by weight of the entire composition at from about 5% to about 25%, preferably from about 10% to about 20%.
• N-long chain acyl acidic amino acid ester of sterol useful herein include: phytosteryl/octyldodecyl lauroyl glutamate with tradename ELDEW PS- 203, and cholesteryl/octyldodecyl lauroyl glutamate with tradename ELDEW CL-202, both available from Ajinomoto Ltd. Dimer Acid Ester
• the composition of the present invention comprises a dimer acid ester which may be a monoester or diester of dimer acid, wherein at least one group is esterified with a sterol selected from the group consisting of phytosterol, cholesterol, lanosterol, stigmasterol, its hydrogenates, and its derivatives.
• the dimer acid ester may also be a diester of dimer acid esterified with fatty alcohol.
• the remaining group or both groups may be esterified with a straight chain alcohol having 1-34 carbons, a branched chain alcohol having 3-34 carbons, or an unsaturated alcohol having 6-34 carbons.
• the dimer acid ester of the present invention preferably has a water holding capability of at least 240%, and is liquid at 25°C.
• the dimer acid ester is comprised by weight of the entire composition at from about 5% to about 50%.
• the dimer acid ester may be comprised by weight of the entire composition at from about 5% to about 25%, preferably from about 10% to about 20%.
• dimer acid esters include: phytosteryl isostearyl dimer dilinoleate with tradename LUSPLAN PI-DA, dimer dilinoleyl hydrogenated rosinate with tradename LUSPLAN DD-DHR, and dimer dilinoleyl dimer dilinoleate: with tradenames LUSPLAN DD-DA5 and LUSPLAN DD-DA7, all available from Nippon Fine Chemical Co., Ltd.
• the composition of the present invention is made of single continuous lipophilic phase.
• the present composition may be anhydrous. While there could be a small amount of water included in the composition, such water is within the amount that could be completely solubilized in the lipophilic components of the composition.
• polyglycerin fatty acid ester, N-long chain acyl acidic amino acid ester of sterol, and dimer acid ester all have a certain water holding capability.
• the present invention excludes compositions that are emulsions.
• the lipophilic personal care composition of the present invention may take various consumer product forms, such as lipstick, lipgloss, foundation, skin cream, antiperspirant, hair treatment cream, ointment, and others.
• the present composition is particularly useful for making cosmetic compositions such as lipstick, lipgloss, foundations, and creams.
• the composition of the present invention may contain further lipophilic components for making the remainder of the composition.
• Such components can be any that are useful for personal care products, and which characterize the product.
• Nonlimiting examples of the other lipophilic components include low viscosity vegetable oils, other nonvolatile oils, and acryl alkyl silicone copolymers.
• components such as solid wax, color powders, skin feel improving powders, skin benefit agents, UV absorbers, and other components may be included.
• One highly preferred embodiment of the present invention is lipstick.
• the present lipstick composition comprises solid wax for solidifying the composition, and color powders for providing color to the lips.
• the lipophilic composition is substantially free of polar solvents.
• polar solvents are hydrophilic liquid solvents such as water, and monohydric and polyhydric alcohols.
• the composition substantially free of polar solvents has good physical stability.
• good physical stability means prevention of sweating and color stability.
• the present composition substantially free of polar solvents has good moisturizing despite lack of polar solvents.
• the lipophilic composition comprises polar solvents.
• the polar solvents may be used as solvent for dissolving water-soluble skin benefit agents to be incorporated in the lipophilic composition.
• the lipophilic composition is substantially free of surfactants.
• Surfactants herein include emulsifiers. By providing the composition substantially free of surfactants, the composition has reduced risk of causing irritation to the skin or scalp.
• the lipophilic composition of the present invention may be suitably manufactured by utilizing commonly used equipment and processes known in the art.
• the present composition may be made by conveniently mixing the components in a tank with heat added as necessary for fluidizing solid components. Heat sensitive components may be added after the mixture is cooled.
• Low Viscosity Vegetable Oil Low Viscosity Vegetable Oil
• composition of the present invention may further comprise a low viscosity vegetable oil having a viscosity of no more than about 300mPas, preferably no more than about 200mPas.
• Low viscosity vegetable oils useful herein are any that are extracted from vegetable origin mainly comprising glyceride esters, and its hydrogenated products. Those having a relatively low viscosity are particularly useful herein for providing the desired fresh feel for the entire lipophilic composition.
• Non-limited examples of low viscosity vegetable oils useful herein are: sweet almond oil, rapeseed oil, fennel oil, olive oil, orange oil, canola oil, matricaria flower oil, cucumber oil, aleurites moluccana seed oil, cinnamon oil, corn oil, arctium lappa seed oil, sesame seed oil, rice bran oil, rice germ oil, camellia kissi seed oil, safflower seed oil, shea butter oil, job's tears seed oil, peppermint oil, soybean oil, tea seed oil, camellia japonica seed oil, rosa canina fruit oil, apricot kernel oil, palm kernel oil, palm oil, hybrid safflower seed oil, hybrid sunflower oil, peanut oil, sunflower seed oil, grape seed oil, jojoba oil, macadamia integrifolia nut oil, meadowfoam seed oil, coconut oil, eucalyptus oil, eucalyptus clobulus leaf oil, rosemary leaf oil, evening primrose oil
• the low viscosity vegetable oil may be comprised by weight of the entire composition at from about 5% to about 20%, preferably from about 10% to about 15%.
• Non- Volatile Oil examples include macadamia integrifolia nut oil with tradename FLORAMAC HAWAIIAN MACADAMIA available from Floratech, meadowfoam seed oil with tradename CROPURE MDF available from Croda, olive oil with tradename CROPURE OL available from Croda, jojoba oil with tradename Jojoba Oil available from Mitsuba Trading, and safflower seed oil with tradename Safflower Seed Oil available from NOF Corporation.
• Other Non- Volatile Oil examples include macadamia integrifolia nut oil with tradename FLORAMAC HAWAIIAN MACADAMIA available from Floratech, meadowfoam seed oil with tradename CROPURE MDF available from Croda, olive oil with tradename CROPURE OL available from Croda, jojoba oil with tradename Jojoba Oil available from Mitsuba Trading, and safflower seed oil with tradename Safflower Seed Oil available from NOF Corporation.
• composition of the present invention may further comprise other non- volatile oils suitable for personal use.
• the non-volatile oil may be comprised by weight of the entire composition at from about 1% to about 50%, preferably from about 5% to about 30%.
• Non-volatile oils useful herein are, for example, tridecyl isononanoate, isostearyl isostearate, isocetyl isosteatrate, isopropyl isostearate, isodecyl isonoanoate, cetyl octanoate, isononyl isononanoate, diisopropyl myristate, isocetyl myristate, isotridecyl myristate, isopropyl myristate, isostearyl palmitate, isocetyl palmitate, isodecyl palmitate, isopropyl palmitate, octyl palmitate, caprylic/capric acid triglyceride, glyceryl
• oils include, for example, tridecyl isononanoate with tradename Crodamol TN available from Croda, Hexalan available from Nisshin Oil Mills, Ltd., tocopherol acetates available from Eisai, polyglyceryl-2 triisostearate with tradename COSMOL 43V available from Nisshin Oil Mills, Ltd., and shea butter with tradename CROPURE SB available from Croda.
• Non- volatile oils useful herein also include polyalkyl or polyaryl siloxanes with the following structure (II)
• R 93 is alkyl or aryl
• p is an integer from about 7 to about 8,000.
• Z 8 represents groups which block the ends of the silicone chains.
• the alkyl or aryl groups substituted on the siloxane chain (R 93 ) or at the ends of the siloxane chains Z 8 can have any structure as long as the resulting silicone remains fluid at room temperature, is dispersible, is neither irritating, toxic nor otherwise harmful when applied to the skin, is compatible with the other components of the composition, and is chemically stable under normal use and storage conditions.
• Suitable Z 8 groups include hydroxy, methyl, methoxy, ethoxy, propoxy, and aryloxy.
• the two R 93 groups on the silicon atom may represent the same group or different groups.
• the two R 93 groups represent the same group.
• Suitable R 93 groups include methyl, ethyl, propyl, phenyl, methylphenyl and phenylmethyl.
• the preferred silicone compounds are polydimethylsiloxane, polydiethylsiloxane, and polymethylphenylsiloxane. Polydimethylsiloxane, which is also known by CTFA name dimethicone, is especially preferred. These silicone compounds are available, for example, from the General
• Polyalkylaryl siloxane fluids can also be used and include, for example, polymethylphenylsiloxanes. These siloxanes also known by CTFA name phenyl trimethicone are available, for example, from the General Electric Company as SF 1075 methyl phenyl fluid, from Dow Corning as 556 Cosmetic Grade Fluid, or from ShinEtsu Silicone as Silicone Oil KF-56.
• Non- volatile oils also useful herein are the various grades of mineral oils.
• Mineral oils are liquid mixtures of hydrocarbons that are obtained from petroleum. Specific examples of suitable hydrocarbons include paraffin oil, mineral oil, dodecane, isododecane, hexadecane, isohexadecane, eicosene, isoeicosene, tridecane, tetradecane, polybutene, polyisobutene, and mixtures thereof.
• composition of the present invention may further comprise an acryl alkyl silicone copolymer having a melting point of no more than about 40 0 C.
• the acryl alkyl silicone copolymers useful herein include those that are graft copolymers of an (meth)acrylic main chain and siloxane side chains, wherein the (meth)acrylic main chain has attached to it an alkyl chain of 16-22 carbons. The acryl alkyl silicone copolymer is believed to provide smoothness to the composition.
• the acryl alkyl silicone copolymer may be comprised by weight of the entire composition at from about 0.5% to about 15%, preferably from about 1% to about 10%.
• acryl alkyl silicone copolymer examples include: acrylates/stearyl acrylate/dimethicone methacrylate copolymer with tradename KP-561P available from ShinEtsu Silicone. Solid Wax
• composition of the present invention may further comprise a solid wax.
• solid wax is typically included.
• the amount of the solid wax is controlled to provide the desired hardness and strength to the product.
• the solid wax is comprised by weight of the entire composition at from about 5% to about 20%, preferably from about 8% to about 15%.
• the solid waxes useful herein are paraffin wax, microcrystalline wax, ozokerite wax, ceresin wax, carnauba wax, candelilla wax, eicosanyl behenate, polyethylene wax, and mixtures thereof.
• a mixture of waxes is preferably used.
• Solid waxes useful herein include: Candelilla wax NC- 1630 available from Cerarica Noda Co., Ltd., Ozokerite Wax SP- 1021 available from Strahl & Pitsh, eicosanyl behenate available from Cas Chemical, microcrystalline wax with tradename MULTIWAX 180-M Yellow available from Witco Chemical, and polyethylene wax with tradename PERFORMALENE PL available from New Phase Technology. Color Powders
• composition of the present invention may further comprise color powders.
• color powders include those which are white or nearly transparent.
• the color powder component is comprised by weight of the entire composition at from about 1% to about 50%, preferably from about 2% to about 45%.
• the amount and type of powders are selected depending on the desired characteristic of the product, for example, shade, coverage, UV protection benefit, and various skin feel.
• clay mineral powders such as talc, mica, sericite, silica, magnesium silicate, synthetic fluorphlogopite, calcium silicate, aluminum silicate, bentonite and montomorillonite
• pearl pigments such as alumina, barium sulfate, calcium secondary phosphate, calcium carbonate, titanium oxide, finely divided titanium oxide, zirconium oxide, zinc oxide, hydroxy apatite, iron oxide, iron titate, ultramarine blue, Prussian blue, chromium oxide, chromium hydroxide, cobalt oxide, cobalt titanate, titanium oxide coated mica
• organic powders such as polyester, polyethylene, polystyrene, methyl metharylate resin, cellulose, 12-nylon, 6-nylon, styrene-acrylic acid copolymers, poly proprylene, vinyl chloride polymer, tetrafluoroethylene polymer, boron nitride, fish scale guanine, laked tar color
• a certain percentage of spherical powders can be used.
• the materials may be selected depending on the oil absorbing capability of the powders.
• Hydrophobically treated powders can also be used.
• Such hydrophobically treated powders are made by treating the base material, as above, with a hydrophobical treatment agent, including: silicone such as Methicone, Dimethicone and perfluoroalkylsilane; fatty material such as stearic acid; metal soap such as aluminium dimyristate; aluminium hydrogenated tallow glutamate, hydrogenated lecithin, lauroyl lysine, aluminium salt of perfluoroalkyl phosphate, and mixtures thereof.
• a hydrophobical treatment agent including: silicone such as Methicone, Dimethicone and perfluoroalkylsilane; fatty material such as stearic acid; metal soap such as aluminium dimyristate; aluminium hydrogenated tallow glutamate, hydrogenated lecithin, lauroyl lysine, aluminium salt of perfluoroalkyl phosphate, and mixtures thereof.
• composition of the present invention may further comprise a polar solvent.
• the polar solvent provides moisturizing benefit to the skin.
• the polar solvent also serves as solvent for incorporating water-soluble skin benefit agents which otherwise would not be compatible in the lipophilic carrier base.
• the polar solvent is comprised by weight of the entire composition at from about 0.01% to about 10%, preferably from about 1% to about 8%.
• Polar solvents useful herein include water, polyhydric alcohols such as glycerin, 1,3-butylene glycol, propylene glycol, hexylene glycol, propane diol, ethylene glycol, diethylene glycol, dipropylene glycol, diglycerin, sorbitol, and other sugars which are in liquid form at ambient temperature. Also useful herein are water soluble alkoxylated nonionic polymers such as polyethylene glycol.
• polar solvents herein include: glycerin available from Asahi Denka; propylene glycol with tradename LEXOL PG-865/855 available from Inolex, 1,2-PROPYLENE GLYCOL USP available from BASF; 1,3-butylene glycol available from Daisel Kagaku Kogyo; dipropylene glycol with the same tradename available from BASF; diglycerin with tradename DIGLYCEROL available from Solvay GmbH.
• Water-Soluble Skin Benefit Agent may further comprise a water-soluble skin benefit agent in an amount soluble in the polar solvent above, preferably from about 0.1% to about 10%, more preferably from about 1% to about 5%.
• Water-soluble skin benefit agents useful herein include niacinamide, panthenol, bacterial cultured mediums, allantoin, sodium lactate, PCA soda, amino acids, urea, sodium hyaluronate, chondroitin sulfate, collagen, elastin, pectin, carageenan, sodium alginate, trehalose, tuberose saccharide, chitin derivatives, chitosan derivatives, and mixtures thereof.
• water soluble skin benefit agents include niacinamide and panthenol by Roche, sodium hyaluronate with tradenames ACTHVIOIST available from Active Organics, AVIAN SODIUM HYALURONATE series available from Intergen, and HYALURONIC ACID Na available from Ichimaru Pharcos. Additional Components
• composition of the present invention may include other additional components, which may be selected by the artisan according to the desired characteristics of the final product and which are suitable for rendering the composition more cosmetically or aesthetically acceptable or to provide them with additional usage benefits.
• additional components generally are used individually at levels of no more than about 5% by weight of the composition.
• composition of the present invention may further contain a nonvolatile dispersed silicone usually referred to as silicone gum.
• silicone gum means a polyorganosiloxane material having a viscosity at 25 0 C of greater than or equal to 1,000,000 mPa » s. Silicone gums are believed to provide wearability improvement such as long-lasting effect.
• the "silicone gums” will typically have a mass molecular weight in excess of about 200,000, generally between about 200,000 and about 1,000,000.
• composition of the present invention may further contain a silicone resin, which are highly crosslinked polymeric siloxane systems. Silicone resins are believed to enhance spreadability and improve the feel to the skin.
• the crosslinking is introduced through the incorporation of tri-functional and tetra-functional silanes with mono- functional or di-functional, or both, silanes during manufacture of the silicone resin.
• the degree of crosslinking that is required in order to result in a silicone resin will vary according to the specific silane units incorporated into the silicone resin.
• silicone materials which have a sufficient level of trifunctional and tetrafunctional siloxane monomer units, and hence, a sufficient level of crosslinking, such that they dry down to a rigid, or hard, film are considered to be silicone resins.
• the ratio of oxygen atoms to silicon atoms is indicative of the level of crosslinking in a particular silicone material.
• Silicone materials which have at least about 1.1 oxygen atoms per silicon atom will generally be silicone resins herein. Preferably, the ratio of oxygen: silicon atoms is at least about 1.2:1.0.
• Silanes used in the manufacture of silicone resins include monomethyl-, dimethyl-, trimethyl-, monophenyl-, diphenyl-, methylphenyl-, mono vinyl-, and methyl vinylchlorosilanes, and tetrachlorosilane, with the methyl substituted silanes being most commonly utilized.
• silicone resin powders such as the material given the CTFA designation polymethylsilsequioxane, which is commercially available as TospearlTM from Toshiba Silicones.
• Silicone materials and silicone resins in particular, can conveniently be identified according to a shorthand nomenclature system well known to those skilled in the art as the "MDTQ" nomenclature. Under this system, the silicone is described according to the presence of various siloxane monomer units which make up the silicone. Briefly, the symbol M denotes the mono-functional unit (CHs) 3 SiOoS; D denotes the difunctional unit (CH 3 ) 2 SiO; T denotes the trifunctional unit (CH 3 )SiO 1 5 ; and Q denotes the quadri- or tetra-functional unit SiO2.
• Primes of the unit symbols denote substituents other than methyl, and must be specifically defined for each occurrence. Typical alternate substituents include groups such as vinyl, phenyl, amino, hydroxyl, etc.
• the molar ratios of the various units either in terms of subscripts to the symbols indicating the total number of each type of unit in the silicone, or an average thereof, or as specifically indicated ratios in combination with molecular weight, complete the description of the silicone material under the MDTQ system. Higher relative molar amounts of T, Q, T' and/or Q' to D, D', M and/or or M' in a silicone resin is indicative of higher levels of crosslinking. As discussed before, however, the overall level of crosslinking can also be indicated by the oxygen to silicon ratio.
• the silicone resins for use herein which are preferred are MQ, MT, MTQ, MQ and MDTQ resins.
• the preferred silicone substituent is methyl.
• MQ resins wherein the M:Q ratio is from about 0.5:1.0 to about 1.5:1.0 and the average molecular weight of the resin is from about 1000 to about 10,000.
• Commercially available MQ resins are, for example, trimethyl siloxy silicate with tradename BYl 1-018 available from Dow Corning.
• composition of the present invention may further contain a water-soluble polymer. It is believed that water-soluble polymers provide long-lasting effect.
• Useful water-soluble polymers include sodium carboxymethyl cellulose, polyvinyl pyrrolidone, polyvinyl alcohol, xanthan gum, agar, pulleran, bentonite, and mixtures thereof.
• Commercially available water-soluble polymers include the Carbopol series available from B. F. Goodrich Company, and PVP K-30 available from G.A.F. Chemicals.
• composition of the present invention may further contain an oil swelling clay material which functions as a thickener for the composition.
• Oil swelling clay materials useful herein include hectorite, bentonite, montmorillonite, and bentone clays which have been modified to be compatible with oil. Preferably, the modification is quaternization with an ammonium compound.
• Preferable oil swelling clay materials include quaternary ammonium modified hectorite.
• Commercially available oil swelling clay materials include benzyldimethyl stearyl ammonium hectorite with tradename Bentone 38 CG OR available from Rheox. Inc.
• compositions of the present invention are; emollient mixtures by the tradename MAXI-LIP containing octyl palmitate, tribehenin, sorbitan isostearate and palmitoyl oligopeptide available from Sederma, preservatives such as benzyl alcohol, methyl paraben, propyl paraben, imidazolidinyl area, and EDTA and its salts, perfumes, ultraviolet and infrared screening and absorbing agents such as ethylhexyl methoxycinnamate, and others.
• emollient mixtures by the tradename MAXI-LIP containing octyl palmitate, tribehenin, sorbitan isostearate and palmitoyl oligopeptide available from Sederma
• preservatives such as benzyl alcohol, methyl paraben, propyl paraben, imidazolidinyl area, and EDTA and its salts
• perfumes ultraviolet and infrared
• compositions are formed by the following components using the method of preparation described herein:
• Palmitoyl Oligopeptide MAXI-LIP available from Sederma
• Microcrystalline Wax MULTIWAX 180-M Yellow available from Witco
• the cosmetic compositions of Examples 1 - 5 are suitably prepared as follows: First, a mixture of component numbers 1 through 18 are heated to disperse using a Propeller Mixer at 95°C in a sealed tank. After all components are melted, cool the mixture to 85°C. After that, component number 19 is added, and the mixture is dispersed at 85°C. Finally, the dispersion is filled in an air-tight container and allowed to cool to room temperature.
• Examples 1 through 3 provide lipsticks
• Example 4 provides lipgloss
• Example 5 provides foundation. These embodiments represented by the previous examples have many advantages.
• the cosmetic compositions provide improved texture of the lips or skin, while also being moisturizing on the lips or skin, provides fresh feel upon use, and have good physical stability.

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• 2006
  • 2006-07-06 WO PCT/IB2006/052288 patent/WO2007007250A1/en active Application Filing
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  • 2006-07-06 EP EP06766029A patent/EP1901812A1/en not_active Withdrawn
  • 2006-07-06 JP JP2008520050A patent/JP4685163B2/ja active Active
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