KR20240108525A - Compositions and methods for improving the appearance of the skin - Google Patents

Abstract

The present disclosure relates to compositions and methods for improving the appearance of the skin. The composition includes at least one thermoplastic elastomer, at least one tacky polymer, and at least one filler. The method includes applying the composition to the skin to form a film on the skin, thereby providing skin tightening or hiding skin imperfections.

Description

Compositions and methods for improving the appearance of the skin}

The present disclosure relates to compositions and methods for improving the appearance of the skin.

The skin originally consists of two layers. The outer layer, or epidermis, is approximately 100 μm deep. The inner layer, or dermis, has a depth of approximately 3000 μm from the outer surface of the skin and is composed of a network of fibrous proteins known as collagen, which provide skin firmness, and elastin, which provides skin elasticity and recovery. do. As people age, the amount of collagen and elastin production in the skin decreases every year. As a result, as we age, our skin becomes increasingly thinner and more fragile, and the formation of wrinkles due to aging is inevitable.

Additionally, as you age, other skin blemishes may appear or become more noticeable. For example, as a person ages, age spots, brown or gray sun-induced skin lesions, may appear on sun-exposed skin. Consumers generally wish to improve the appearance of age-related skin imperfections such as wrinkles, crow's feet, age spots, eye bags, etc. Additionally, many consumers wish to improve the appearance of or hide other skin imperfections, such as acne, scars, enlarged pores, etc., that may not be related to aging.

Although topical cosmetic formulations, such as makeup products of the foundation or concealer type, can improve the appearance of some skin imperfections, such formulations are not persistent and cannot reduce the appearance of more prominent skin imperfections, such as dark wrinkles or scars. Additionally, while some cosmetic formulations, such as anti-wrinkle creams, may contain ingredients that reduce the appearance of blemishes over time, these formulations may take a long time to achieve noticeable results and may also cause more noticeable skin blemishes. may be ineffective in reducing the appearance of

As an alternative to topical cosmetic formulations, more invasive techniques such as surgery, fillers, or laser skin resurfacing can provide longer-lasting effects and treat more visible blemishes. However, the majority of consumers cannot afford or do not want to undergo such extreme cosmetic treatments.

Therefore, there is a desire among consumers for topical cosmetic formulations that are effective in reducing the appearance of skin imperfections.

The present disclosure relates to compositions and methods for improving the appearance of the skin.

In one embodiment, the present disclosure includes at least one thermoplastic elastomer, at least one tacky polymer, and at least one filler, wherein the at least one thermoplastic elastomer has at least two glass transition temperatures (T _g ), which relates to a skin tightening composition.

In a further embodiment, the present disclosure includes at least one thermoplastic elastomer, at least one tacky polymer, and at least one filler, wherein the at least one thermoplastic elastomer has at least two glass transition temperatures (T _g It relates to a skin tightening film having a Young's Modulus of greater than about 500 kPa.

In yet a further embodiment, the present disclosure includes at least one thermoplastic elastomer, at least one tacky polymer, and at least one filler, wherein the at least one thermoplastic elastomer has at least two glass transition temperatures ( A method of improving the appearance of skin comprising forming a film on the skin by applying a composition having a T _g ) on the skin, wherein the film has a Young's modulus greater than about 500 kPa.

In various embodiments, the present disclosure relates to compositions that improve the appearance of skin. According to various embodiments, the present disclosure relates to a composition comprising at least one thermoplastic elastomer, at least one tacky polymer, and at least one filler.

The composition may be effective in reducing the appearance of skin imperfections. In various embodiments, the composition may have the ability to tighten the skin and improve the appearance of the skin by forming a film on the skin that has a Young's modulus greater than the Young's modulus of the skin. Additionally, in some embodiments, the film can blur or hide skin imperfections. Accordingly, the present disclosure further relates to methods of improving the appearance of skin by forming a film on the skin with the compositions described herein.

As used herein, the term "long-lasting" means that the film lasts for at least about 6 hours, such as at least about 12 hours, at least about 24 hours, at least about 48 hours, or at least about 72 hours after the film is formed on the skin. means that

As used herein, the term “persistent” is intended to convey that the film is substantially intact in place on the skin.

As used herein, the term “rapidly formed” means that the film forms in less than about 20 minutes, such as less than about 15 minutes, or less than about 10 minutes after the composition is applied to the skin.

As used herein in relation to a skin blemish, the term "blurry" means that the visual appearance of the blemish is less noticeable.

As used herein, the term "tightening" means shrinking the film in a way that gives the user the feeling of tighter skin and also reduces the visual appearance of skin wrinkles.

As used herein, the term "soft focus" means that the visual appearance of the skin is more uniform and matte, allowing skin imperfections to be blurred or hidden.

As used herein, “permanent” means that the film will not be easily rubbed off or removed by sweat, water, makeup products, lotions, etc., such that the film will remain substantially intact until removed by the user.

composition

According to various embodiments, the composition includes at least one thermoplastic elastomer, at least one tacky polymer, and at least one filler, which together form an association. Additional optional ingredients such as solvents, silicone elastomers, wetting agents, water, and pigments may also be included in the composition.

thermoplastic elastomer

According to various non-limiting example embodiments, the at least one thermoplastic elastomer may be selected from block copolymers having at least two glass transition temperatures (“T _g ”). Block copolymers can be hydrocarbons that are soluble or dispersible in the oil phase. In various embodiments, the at least one thermoplastic elastomer can be amorphous, crystalline, or semi-crystalline.

Block copolymers include one or more hard segments attached to one or more soft segments. Hard segments of thermoplastic elastomers may contain varying amounts of vinyl monomers. Examples of suitable vinyl monomers include, but are not limited to, styrene, methacrylates, acrylates, vinyl esters, vinyl ethers, vinyl acetates, etc. Soft segments may include olefin polymers and/or copolymers, which may be saturated, unsaturated, or combinations thereof. Examples of olefin copolymers may include ethylene/propylene copolymers, ethylene/butylene copolymers, propylene/butylene copolymers, polybutylene, polyisoprene, polymers of hydrogenated butane and isoprene, and mixtures thereof. It is not limited to these.

For example, at least one thermoplastic elastomer is a bi-block, tri-block, multi-block, or may be selected from radial, and star copolymers. Non-limiting examples of unsaturated hydrocarbon monomers having 2 to 5 unsaturated carbon atoms include ethylene, propylene, butadiene, isoprene, or pentadiene. In various non-limiting example embodiments, the block copolymer may be selected from those comprising at least one styrene block and at least one block comprising units selected from butadiene, ethylene, propylene, butylene, isoprene, or mixtures thereof. You can.

Optionally, the block copolymer may be hydrogenated to reduce ethylenic unsaturation remaining after polymerization of the monomers. For example, the hydrocarbon-based block copolymer may optionally be a hydrogenated copolymer comprising styrene blocks and ethylene blocks/C ₃ -C ₄ alkylene or isoprene blocks. In one example embodiment, the block copolymer is an amorphous hydrocarbon block copolymer, e.g., of styrene and a hydrocarbon monomer containing 2 to 5 carbon atoms and including 1 or 2 ethylenic unsaturation. .

The amorphous thermoplastic elastomer includes at least one first block having a T _g of less than about 20°C, such as less than about 0°C, less than about -20°C, or less than about -40°C. The T _g of the first block may range, for example, from about -150°C to about 20°C, such as from about -100°C to about 0°C. The block copolymer may also comprise at least one second block having a T _g greater than about 25°C, such as greater than about 50°C, greater than about 75°C, greater than about 100°C, or greater than about 150°C. Includes. The T _g of the second block may range, for example, from about 25°C to about 150°C, such as from about 50°C to about 125°C, from about 60°C to about 120°C, or from about 70°C to about 100°C.

Non-limiting example amorphous diblock copolymers can be selected from styrene-ethylene/propylene copolymers, styrene-ethylene/butadiene copolymers, styrene-ethylene/butylene copolymers, styrene-butadiene, or styrene-isoprene copolymers. The diblock copolymer is sold, for example, by Kraton Polymers under the product name Kraton® G1701E.

Exemplary triblock amorphous copolymers include styrene-ethylene/propylene-styrene copolymer, styrene-ethylene/butadiene-styrene copolymer, styrene-isoprene-styrene copolymer, and styrene-butadiene-styrene copolymer, such as Kraton Polymers. It can be selected from those sold under the product names Kraton® G1650, Kraton® D1101, Kraton® D1102, and Kraton® D1160. In one example embodiment, the thermoplastic elastomer is a mixture of a triblock copolymer of styrene-butylene/ethylene-styrene and a diblock copolymer of styrene-ethylene/butylene, such as Kraton® G1657M by Kraton Polymers. It may be sold under the product name. As a further example, the thermoplastic elastomer may be a mixture of a hydrogenated triblock copolymer of styrene-butylene/ethylene-styrene and a hydrogenated star polymer of ethylene-propylene-styrene, such mixture especially in isododecane in another oil. It can be. Such mixtures are sold, for example, by Penreco under the trade names VERSAGEL® M5960 and VERSAGEL® M5670.

In a further exemplary embodiment, the at least one thermoplastic elastomer is selected from semi-crystalline block copolymers having at least two glass transition temperatures. The semi-crystalline block copolymer may include at least one first block with a T _g greater than about 40°C, such as greater than about 75°C, or greater than 100°C. The T _g of the first block may range, for example, from about 40°C to about 150°C, such as from about 50°C to about 100°C. The semicrystalline block copolymer also includes at least one second block having a T _g of less than about -50°C, such as less than about -75°C, less than about -100°C, or less than about -150°C. The T _g of the second block may range, for example, from about -150°C to about -50°C, such as from about -100°C to about -50°C.

By way of non-limiting example, the semi-crystalline thermoplastic elastomer may be selected from polyamides and/or copolymers containing polysilicones and/or polyurethanes, such as polysilicon-polyamide or polysilicon-polyurethane. For example, the semi-crystalline thermoplastic elastomer can be selected from polyorganosiloxane-containing polymers comprising at least one moiety corresponding to the formula (I):

<Formula I>

In the above equation:　

1) R ¹ , R ² , R ³ and R ⁴ , which may be the same or different, may (a) contain one or more oxygen, sulfur and/or nitrogen atoms in their chain and may be partially composed of fluorine atoms; linear, branched or cyclic, saturated or unsaturated C ₁ to C ₄₀ hydrocarbon-based groups, (b) C ₆ to C ₁₀ aryl optionally substituted with one or more C ₁ to C ₄ alkyl groups; group, (c) a group selected from polyorganosiloxane chains, which may contain one or more oxygen, sulfur and/or nitrogen atoms;

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

3) Y optionally contains one or more oxygen, sulfur and/or nitrogen atoms and/or the following atoms or atom groups: fluorine, hydroxyl, C ₃ to C ₈ cycloalkyl, C ₁ to C ₄₀ alkyl, C ₅ to C ₁₀ aryl, phenyl optionally substituted with 1 to 3 C ₁ to C ₃ alkyl, C ₁ to C ₃ hydroxyalkyl, and C ₁ to C ₆ aminoalkyl groups, saturated or unsaturated C ₁ to C ₅₀ linear or branched divalent alkylene, arylene, cycloalkylene, alkylarylene or arylalkylene group;

4) G, which may be the same or different, represents a group selected from ester, amide, sulfonamide, carbamate, thiocarbamate, urea, thiourea group, and combinations thereof;　

5) m is an integer ranging from 1 to 1,000, preferably from 1 to 700, more preferably from 6 to 200;

6) n is an integer ranging from 2 to 500, preferably from 2 to 200.

In a further embodiment, the semi-crystalline thermoplastic elastomer may be selected from copolymers containing at least one moiety corresponding to Formula II:

<Formula II>

In the above equation:

R ¹ and R, which may be the same or different, are as defined above for formula (I),

R ⁷ represents a group as defined above for R ¹ and R ³ or a group of the formula -XGR ⁹ , where X and G are as defined above for formula I and R ⁹ is a hydrogen atom or phenyl, which optionally contains in its chain one or more atoms selected from O, S and N, and is optionally substituted with one or more fluorine atoms and/or one or more hydroxyl groups, or one or more C ₁ to C ₄ alkyl groups represents a linear, branched or cyclic, saturated or unsaturated C ₁ to C ₅₀ hydrocarbon-based group, optionally substituted with a group,

R ⁸ represents a group of the formula -XGR ⁹ where X, G and R ⁹ are as defined above,

m ₁ is an integer ranging from 1 to 998,

m ₂ is an integer ranging from 2 to 500.

In yet a further embodiment, a block copolymer comprising a plurality of different moieties of formula (I), and/or a plurality of different moieties of formula (II), for example in any one moiety groups R ¹ , R ² , It is also possible to use polymers in which at least one of R ³ , R ⁴ , X, G, Y, m, and n is different. It is also possible to use block copolymers comprising at least one moiety of formula (I) and at least one moiety of formula (II), wherein the moieties of formula (I) and the moieties of formula (II) may be the same or different from each other. there is.

For example, in at least one embodiment, the semi-crystalline thermoplastic elastomer can be selected from polyamide copolymers containing at least one moiety corresponding to Formula III and at least one moiety corresponding to Formula IV: there is:

<Formula III>

<Formula IV>

In the above equation:

(a) R ¹ , R ² , R ³ , and R ⁴ are the same or different and may be selected from the group consisting of methyl, ethyl, propyl, isopropyl, siloxane chain, and phenyl;

(b) X is a straight or branched chain alkylene having 1 to 30 carbons;　

(c) Y is selected from the group consisting of straight or branched chain alkylene having 1 to 40 carbons;　

(d) m is a number from 1 to 700;

(e) n is a number from 1 to 500.

By way of example only, the semicrystalline thermoplastic elastomer may be selected from Nylon 6, Nylon 66, and Nylon-611/dimethicone copolymer.

The thermoplastic elastomer may be present in an amount of up to about 25% by weight of the composition, such as about 5% to about 20%, about 6% to about 18%, about 7% to about 16%, about 8% to about 15%, about It may be present in the composition in an amount ranging from 9% to about 14%.

adhesive polymer

Compositions according to the present disclosure further comprise at least one adhesive film-forming polymer. In various embodiments, the at least one adhesive polymer can be amorphous, crystalline, or semi-crystalline.

In various embodiments, the tacky polymer may have a T _g greater than about 25°C, such as greater than about 50°C, greater than about 75°C, or greater than about 100°C, depending on the various embodiments. In further embodiments, the tacky polymer may have a T _g of less than about 25°C, such as less than about 0°C, less than about -25°C, or less than about -50°C.

The at least one adhesive polymer is present in an amount of up to about 25% by weight of the composition, such as about 5% to about 20%, about 6% to about 18%, about 7% to about 16%, about 8% to about 8%. It may be present in the composition in an amount ranging from 15%, about 9% to about 14%.

Tacky polymers having a T _g greater than about 25° C. include, but are not limited to, polymer particles of C ₁ -C ₄ alkyl(methacrylate) polymers stabilized in non-aqueous dispersions, referred to herein as “oil dispersions” for ease of reference. By way of example, these dispersions are, for example, those described in WO2015/091513, which is incorporated herein by reference.

For example, C ₁ -C ₄ alkyl (meth)acrylate monomers include methyl (meth)acrylate, ethyl (meth)acrylate, n-propyl (meth)acrylate, isopropyl (meth)acrylate, n- butyl (meth)acrylate and tert-butyl (meth)acrylate. For example, the polymer may be methyl acrylate and/or ethyl acrylate polymer.

The polymer may in particular contain at least one carboxylic acid, phosphoric acid or sulfonic acid function, such as crotonic acid, itaconic acid, fumaric acid, maleic acid, maleic anhydride, styrenesulfonic acid, vinylbenzoic acid, vinylphosphoric acid, acrylic acid, methacrylic acid, acrylamidopropane. It may also include an ethylenically unsaturated acid monomer or anhydride thereof selected from ethylenically unsaturated acid monomers, including sulfonic acid or acrylamidoglycolic acid, and salts thereof. For example, the ethylenically unsaturated acid monomer may be selected from (meth)acrylic acid, maleic acid, and maleic anhydride.

Salts include salts of alkali metals, such as sodium or potassium; salts of alkaline earth metals, such as calcium, magnesium or strontium; salts of metals such as zinc, aluminum, manganese or copper; Ammonium salt of the formula NH ⁺ ; quaternary ammonium salt; Salts of organic amines, such as methylamine, dimethylamine, trimethylamine, triethylamine, ethylamine, 2-hydroxyethylamine, bis(2-hydroxyethyl)amine or tris(2-hydroxyethyl)amine. salt of; It may be selected from lysine or arginine salts.

Accordingly, the polymer particles of the oil dispersion may contain from about 80% to about 100% by weight of C ₁ -C ₄ alkyl (meth)acrylate and from about 0% to about 20% by weight of ethylenically unsaturated acid, relative to the total weight of the polymer. It may contain or consist essentially of monomers. According to one exemplary embodiment, the polymer consists essentially of a polymer of one or more C ₁ -C ₄ alkyl (meth)acrylate monomers. According to another exemplary embodiment, the polymer consists essentially of a copolymer of C ₁ -C ₄ (meth)acrylate and (meth)acrylic acid or maleic anhydride.

By way of non-limiting example only, polymer particles in oil dispersions, which may be optionally crosslinked or alternatively uncrosslinked, include methyl acrylate homopolymer, ethyl acrylate homopolymer, methyl acrylate/ethyl acrylate copolymer, methyl acrylate Acrylate/ethyl acrylate/acrylic acid copolymer, methyl acrylate/ethyl acrylate/maleic anhydride copolymer, methyl acrylate/acrylic acid copolymer, ethyl acrylate/acrylic acid copolymer, methyl acrylate/maleic anhydride copolymer , and ethyl acrylate/maleic anhydride copolymer.

The polymer particles of the dispersion may have a number average molecular weight ranging from about 2000 to about 10,000,000, such as from about 150,000 to about 500,000. The polymer particles may be present in an amount of from about 20% to about 60% by weight, for example from about 21% to about 58.5% by weight, from about 30% to about 50% by weight, or from about 35% to about 45% by weight relative to the total weight of the oil dispersion. % by weight, or may be present in the oil dispersion in an amount ranging from about 36% to about 42% by weight.

The stabilizer of the oil dispersion may be an isobornyl (meth)acrylate homopolymer and greater than about 4, for example greater than about 4.5, or greater than about 5 isobornyl (meth)acrylate/C ₁ -C ₄ alkyl (meth) ) may be an isobornyl (meth)acrylate polymer selected from statistical copolymers of isobornyl (meth)acrylate and C ₁ -C ₄ alkyl (meth)acrylate present in a weight ratio of acrylate. For example, the weight ratio may range from about 4.5 to about 19, such as from about 5 to about 19, or from about 5 to about 12.

By way of example only, stabilizers include isobornyl acrylate homopolymer, statistical copolymer of isobornyl acrylate/methyl acrylate, statistical copolymer of isobornyl acrylate/methyl acrylate/ethyl acrylate, and isobornyl acrylate/methyl acrylate/ethyl acrylate. may be selected from statistical copolymers of bornyl methacrylate/methyl acrylate.

In various embodiments, the stabilizer may have a number average molecular weight ranging from about 10,000 to about 400,000, such as from about 20,000 to about 200,000.

In various embodiments, the combination of stabilizer + polymer particles present in the oil dispersion may be present in an amount of from about 10% to about 50% by weight, such as from about 15% to about 30% by weight, relative to the total weight of the combination of stabilizer + polymer particles. polymerized isobornyl (meth)acrylate, and from about 50% to about 90% by weight, such as from about 70% to about 85% by weight of polymerized C ₁ -C ₄ alkyl (meth)acrylate.

The oil medium of the oil dispersion includes a hydrocarbon-based oil. Hydrocarbon-based oils are oils that are liquid at room temperature (25°C). The term “hydrocarbon-based oil” means an oil that is formed essentially from or even consists of carbon and hydrogen atoms, and optionally oxygen and nitrogen atoms, and does not contain any silicon or fluorine atoms. It may contain alcohol, ester, ether, carboxylic acid, amine and/or amide groups.

Non-limiting example embodiments of hydrocarbon-based oil media of oil dispersions include hydrocarbon-based oils containing up to about 40 carbon atoms, such as 8 to 16 or 8 to 14 carbon atoms. Optionally, the hydrocarbon-based oil is non-polar. For example, the hydrocarbon-based oil may be selected from isododecane.

Oil dispersions can be prepared, for example, as described in WO2015/091513.

Alternatively, the tacky polymer may be selected from aliphatic or cycloaliphatic hydrocarbon polymers selected from aliphatic or cycloaliphatic hydrocarbon resins having a T _g greater than about 25°C. “Aliphatic or cycloaliphatic hydrocarbon resin” means a polymer or copolymer of olefins, or a polymer or copolymer of partially or fully hydrogenated aromatic hydrocarbon monomers. For example, adhesive polymers include aliphatic hydrocarbon resins, aromatic modified aliphatic hydrocarbon resins, hydrogenated polycyclopentadiene resins, polycyclopentadiene resins, gum rosin, gum rosin esters, wood rosin, wood rosin esters, tall oil rosin, and tall oil. Rosin esters, polyterpenes, aromatic modified polyterpenes, terpene phenols, aromatic modified hydrogenated polycyclopentadiene resins, hydrogenated aliphatic resins, hydrogenated aliphatic aromatic resins, hydrogenated terpenes and modified terpenes, hydrogenated rosin acids, hydrogenated rosin esters, polyisoprene, partial or fully hydrogenated polyisoprene, polybutenediene, partially or fully hydrogenated polybutenediene, and hydrogenated styrene/methyl styrene/indene copolymers. In various embodiments, a hydrogenated indene/methylstyrene/styrene copolymer sold under the trade name REGALITE® by Eastman Chemical may be selected. For example, Regalit® R1090, Regalit® R1100, Regalit® S1100, Regalit® R7100, Regalit® R1010, Regalit® R112, or Regalit® S5100 may be selected. As further examples, those sold by Arakawa under the product names ARKON® P-90, ARKON® P-100, and ARKON® P-115 may be selected.

In further embodiments, the tacky polymer may have a T _g of less than about 25°C. For example, the at least one tacky polymer can be selected from polyacids, such as hyperbranched polyacids. Polyacids useful in accordance with various embodiments of the present disclosure can be found in US Pat. No. 7,582,719 and US2013/0236409, both of which are incorporated herein by reference.

The term “hyperbranched polyacid” refers to the fact that the functional groups of the hyperbranched functional polymer have been replaced by carboxylic acid groups. Useful unsaturated functionalized compounds include, but are not limited to, carboxylic acids, carboxylic acid esters, amides, ethers, amines, phosphate esters, silanes, and alcohols. Examples of such carboxylic acids include, but are not limited to, 5-hexenoic acid, 6-heptenoic acid, 10-undecylenic acid, 9-decenoic acid, oleic acid, and erucic acid. There are also olefinic esters of these acids with straight or branched chain alcohols having from about 1 to about 10 carbon atoms, as well as fatty acid moieties such as tall oil, fish oil, soybean oil, linseed oil, cottonseed oil and the products of partial hydrogenation of these oils. Triglycerides containing unsaturation are useful. Other useful substances are olefinic alcohols, such as allyl alcohol, 9-decen-1-ol, 10-undecylenyl alcohol, oleyl alcohol, erucyl alcohol, acetic acid or formic acid esters of these alcohols, C1-C4 alkyl alcohols of these alcohols. ether derivatives and unsaturated amines such as oleylamine, erucylamine, 10-undecylenylamine and formamide or acetamide of allylamine.

In various embodiments, hyperbranched polyacid compounds useful in accordance with the present disclosure can have at least two carboxyl groups. In various embodiments, the hyperbranched polyacid has a carboxyl number of at least 3, such as at least 10, at least 50, at least 100, or at least about 150. According to various embodiments, the hyperbranched polyacid has a carboxyl number ranging from about 50 to about 250, such as about 75 to about 225, about 100 to about 200, or about 125 to 175. In one embodiment, the hyperbranched polyacid has a carboxyl number ranging from 90 to 150.

In various embodiments, the at least one hyperbranched acid compound has a molecular weight (Mw) ranging from about 500 to about 25,000, such as from about 800 to about 10,000, or from about 1000 to about 8000. In one embodiment, the hyperbranched polyacid has a Mw ranging from about 1000 to about 6000.

In various embodiments, the at least one hyperbranched polyacid compound has a viscosity at 210°F ranging from 0.01 Pas to 10 Pas, such as 0.02 to 7 Pas, or 0.03 to 6 Pas, and all ranges and subranges therebetween. is included. Viscosity is determined at 210°F using a Brookfield viscometer according to the ASTMD-3236MOD method. In various embodiments, the at least one hyperbranched acid compound has an acid number ranging from about 20 to about 400 mg/KOH, such as from about 30 to about 300 mg/KOH, or from about 50 to about 100 mg/KOH.

In one example embodiment, the at least one tacky polymer is a polyacid selected from C ₃₀₊ olefin/undecylenic acid copolymers, such as C ₂₈ -C ₅₂ olefin/undecylenic acid copolymers, such as those from New Face Technologies ( It is available from New Phase Technologies under the trade name Performa V6112™.

Still further examples of selectable adhesive polymers are acrylic film formers. As used herein, “acrylic film former” is an agent that forms a film and includes polymers based on one or more (meth)acrylic acid (and corresponding (meth)acrylate) monomers or similar monomers.

Non-limiting examples of such film formers include copolymers containing at least one non-polar monomer, at least one olefinically unsaturated monomer, and at least one vinyl-based functionalized monomer.

As the nonpolar monomer, acrylic monomers including acrylic acid and methacrylic acid esters having an alkyl group consisting of 4 to 14 C atoms, preferably 4 to 9 C atoms, can be selected. Examples of monomers of this kind are n-butyl acrylate, n-butyl methacrylate, n-pentyl acrylate, n-pentyl methacrylate, n-amyl acrylate, n-hexyl acrylate, hexyl methacrylate, n-heptyl acrylate, n-octyl acrylate, n-octyl methacrylate, n-nonyl acrylate, isobutyl acrylate, isooctyl acrylate, isooctyl methacrylate, and branched isomers thereof, such as 2 -Includes ethylhexyl acrylate and 2-ethylhexyl methacrylate.

As the olefinically unsaturated monomer, it is possible to use a monomer having a functional group selected from hydroxyl, carboxyl, sulfonic acid group, phosphonic acid group, acid anhydride, epoxide, and amine. Examples of olefinically unsaturated monomers include acrylic acid, methacrylic acid, itaconic acid, maleic acid, fumaric acid, crotonic acid, aconitic acid, dimethylacrylic acid, beta-acryloyloxypropionic acid, trichloracrylic acid, vinylacetic acid, vinylphosphonic acid, Itaconic acid, maleic anhydride, hydroxyethyl acrylate, hydroxypropyl acrylate, hydroxyethyl methacrylate, hydroxypropyl methacrylate, 6-hydroxyhexyl methacrylate, allyl alcohol, glycidyl acrylate. , contains glycidyl methacrylate.

Exemplary monomers of vinyl-based functionalized compounds include monomers copolymerizable with any or both of the monomers discussed above, such as methyl acrylate, ethyl acrylate, propyl acrylate, methyl methacrylate, Ethyl methacrylate, benzyl acrylate, benzyl methacrylate, sec-butyl acrylate, tert-butyl acrylate, phenyl acrylate, phenyl methacrylate, isobornyl acrylate, isobornyl methacrylate, tert- Butylphenyl acrylate, tert-butylphenyl methacrylate, dodecyl methacrylate, isodecyl acrylate, lauryl acrylate, n-undecyl acrylate, stearyl acrylate, tridecyl acrylate, behenyl acrylate. , Cyclohexyl methacrylate, cyclopentyl methacrylate, phenoxyethyl acrylate, phenoxyethyl methacrylate, 2-butoxyethyl methacrylate, 2-butoxyethyl acrylate, 3,3,5-trimethyl. Cyclohexyl acrylate, 3,5-dimethyladamantyl acrylate, 4-cumylphenyl methacrylate, cyanoethyl acrylate, cyanoethyl methacrylate, 4-biphenyl acrylate, 4-biphenyl methacrylate Latex, 2-naphthyl acrylate, 2-naphthyl methacrylate, tetrahydrofurfuryl acrylate, diethylaminoethyl acrylate, diethylaminoethyl methacrylate, dimethylaminoethyl acrylate, dimethylaminoethyl methacrylate Latex, 2-butoxyethyl acrylate, 2-butoxyethyl methacrylate, methyl 3-methoxyacrylate, 3-methoxybutyl acrylate, phenoxyethyl acrylate, phenoxyethyl methacrylate, 2- Phenoxyethyl methacrylate, butyldiglycol methacrylate, ethylene glycol acrylate, ethylene glycol monomethyl acrylate, methoxy-polyethylene glycol methacrylate 350, methoxy-polyethylene glycol methacrylate 500, propylene glycol monomethacrylate Acrylates, butoxydiethylene glycol methacrylate, ethoxytriethylene glycol methacrylate, octafluoropentyl acrylate, octafluoropentyl methacrylate, 2,2,2-trifluoroethyl methacrylate, 1 ,1,1,3,3,3-hexafluoroisopropyl acrylate, 1,1,1,3,3,3-hexafluoroisopropyl methacrylate, 2,2,3,3,3- Pentafluoropropyl methacrylate, 2,2,3,4,4,4-hexafluorobutyl methacrylate, 2,2,3,3,4,4,4-heptafluorobutyl acrylate, 2 ,2,3,3,4,4,4-heptafluorobutyl methacrylate, 2,2,3,3,4,4,5,5,6,6,7,7,8,8,8 -Pentadecafluorooctyl methacrylate, dimethylaminopropylacrylamide, dimethylaminopropylmethacrylamide, N-(1-methylundecyl)acrylamide, N-(n-butoxymethyl)acrylamide, N-( butoxymethyl)methacrylamide, N-(ethoxymethyl)acrylamide, N-(n-octadecyl)acrylamide, and also N,N-dialkyl-substituted amides such as N,N-dimethylacrylamide, N,N-dimethylmethacrylamide, N-benzylacrylamide, N-isopropylacrylamide, N-tert-butylacrylamide, N-tert-octylacrylamide, N-methylolacrylamide, N-methylolmetha Crylamide, acrylonitrile, methacrylonitrile, vinyl ethers such as vinyl methyl ether, ethyl vinyl ether, vinyl isobutyl ether, vinyl esters such as vinyl acetate, vinyl chloride, vinyl halide, vinylidene chloride, vinylidene halide, Vinylpyridine, 4-vinylpyridine, N-vinylphthalimide, N-vinyllactam, N-vinylpyrrolidone, styrene, a- and p-methylstyrene, a-butylstyrene, 4-n-butylstyrene, 4 -n-decylstyrene, 3,4-dimethoxystyrene, macromonomers such as 2-polystyrene-ethyl methacrylate (molecular weight, Mw from 4000 to 13,000 g/mol), poly(methyl methacrylate)ethyl methacrylate (Mw from 2000 to 8000 g/mol).

Examples of acrylic-type film formers include copolymers of acrylic acid, isobutyl acrylate and isobornyl acetate, such as those sold under the product names Pseudoblock (Chimex) and Synamer-3. may be mentioned. In both of these commercial products, the copolymer is present in a 1:1 ratio with the solvent (50% solids content). Another exemplary film former is poly(isobornyl methacrylate-8 co-isobornyl acrylate-co-isobutyl acrylate-co as the active material at 50% octyldodecyl neopentanoate). -acrylic acid) (Mexomere PAZ from Chimex).

filler

The composition includes at least one filler. Fillers can be of any shape and of mineral or organic nature. In various embodiments, the filler may have a particle size greater than about 100 nm and/or a specific surface area greater than about 200 m ² /g.

By way of non-limiting example, fillers include talc, mica, silica, silica surface treated with hydrophobic agents, fumed silica, kaolin, polyamide (Nylon®) powders (e.g., Orgasol from Atochem) ®), polyurethane powder, poly-β-alanine powder and polyethylene powder, tetrafluoroethylene polymer (Teflon®) powder, lauroyl lysine, starch, boron nitride, hollow polymer microspheres such as polyvinylidene. Chloride/acrylonitrile microspheres, such as Expancel® (Nobel Industrie) or acrylic acid copolymer microspheres (Polytrap® from Dow Corning) and silicone resin microbeads ( For example, Tospearls® from Toshiba), elastomeric polyorganosiloxane particles, precipitated calcium carbonate, magnesium carbonate, magnesium bicarbonate, hydroxyapatite, hollow silica microspheres (Maprecos) (Silica Beads®), glass or ceramic microcapsules, and metal soaps derived from organic carboxylic acids containing 8 to 22 carbon atoms, preferably 12 to 18 carbon atoms, for example zinc. stearate, magnesium stearate or lithium stearate, zinc laurate or magnesium myristate.

In at least certain embodiments, the at least one filler may be selected from hydrophobic silica airgel particles. Silica airgel is a porous material obtained by replacing the liquid component of silica gel with air (by drying). Hydrophobic silica airgel particles useful in accordance with embodiments of the present disclosure include silylated silica (INCI name: silica silylate) airgel particles. The preparation of hydrophobic silica airgel particles surface modified by silylation is described in more detail in US Pat. No. 7,470,725, which is incorporated herein by reference.

In various embodiments, airgel particles of hydrophobic silica surface modified with trimethylsilyl groups may be selected. For example, the airgel sold under the product name VM-2260® by Dow Corning, whose particles have an average size of about 1000 micrometers and a specific surface area per unit mass in the range of 600 to 800 m ² /g, or An airgel sold under the trade name VM-2270® by Dow Corning, whose particles have an average size in the range of 5 to 15 micrometers and a specific surface area per unit mass in the range of 600 to 800 m ² /g, may be selected. In other embodiments, Aerogel TLD 201®, Airgel OGD 201®, and Airgel TLD 203®, CAB-O-SIL TS-530, CAB-O-SIL TS-610, by Cabot. Airgels sold under the product names CAB-O-SIL TS-720, Enova Aerogel MT 1100®, and Enova Airgel MT 1200® may be selected.

Optionally, mixtures of fillers may be present in compositions according to the present disclosure. For example, mixtures of different airgel particles, or mixtures of airgel and different types of fillers can be used.

The at least one filler may be present in an amount of from about 0.1% to about 20% by weight, for example from about 0.2% to about 15% by weight, from about 0.5% to about 10% by weight, or about 1% by weight relative to the total weight of the composition. It may be present in a total amount ranging from about 6% by weight. In at least certain example embodiments, the filler is present in an amount of less than about 5 weight percent, such as less than about 4 weight percent, relative to the total weight of the composition. In one embodiment, the filler is present in an amount of up to about 3% by weight relative to the total weight of the composition.

additional ingredients

Compositions according to the present disclosure may optionally further include additional ingredients such as solvents, silicone elastomers, wetting agents, water, and pigments.

menstruum

The composition may include at least one solvent. Optionally, the composition may include at least one solvent selected from solvents having a vapor pressure greater than about 100 Pa, such as greater than about 500 Pa, or greater than about 1000 Pa at room temperature (25°C). In various embodiments, the composition is free or substantially free of solvent having a vapor pressure of less than about 25 Pa at room temperature (25°C). In a further embodiment, the composition comprises at least one solvent having a vapor pressure greater than about 100 Pa at room temperature (25°C), such as greater than 500 Pa, or greater than 1000 Pa, and less than about 100 Pa at room temperature (25°C), such as It may include at least one solvent having a vapor pressure of less than about 50 Pa, or less than about 25 Pa.

In various embodiments, the composition includes at least one volatile organic solvent. The volatile organic solvent may be selected, for example, from volatile hydrocarbon-based oils and volatile silicone oils.

For example, volatile hydrocarbon oils include those having 8 to 16 carbon atoms and mixtures thereof, such as branched C ₈ to C ₁₆ alkanes and C ₈ to C ₁₆ isoalkanes (also called isoparaffins), isododecane, iso. Including, but not limited to, decane and isohexadecane. For example, at least one solvent may be an oil sold under the trade names Isopar® or Permethyl®, a C ₈ to C ₁₆ branched ester such as isohexyl or isodecyl neopentanoate and It may be selected from mixtures thereof. In at least certain embodiments, the volatile hydrocarbon oil has a flash point of at least 40°C. It is also possible to use mixtures of isoparaffins with other volatile hydrocarbon-based oils, such as petroleum distillates.

Additionally, the volatile silicone oil may be selected from linear or cyclic silicone oils, such as those having a viscosity of less than 6 cSt at room temperature (25°C) and having 2 to 7 silicon atoms, which silicones have 1 to 10 carbon atoms. optionally substituted with an alkyl or alkoxy group. Examples of volatile silicone oils that can be used include octamethyltetrasiloxane, decamethylcyclo-pentasiloxane, dodecamethylcyclohexasiloxane, heptamethyloctyltrisiloxane, hexamethyldisiloxane, decamethyltetrasiloxane, dodecamethylpentasiloxane, and mixtures thereof. In at least certain embodiments, the volatile silicone oil has a flash point of at least 40°C.

Additionally, the at least one volatile solvent may be selected from polar volatile solvents including, but not limited to, alcohols, volatile esters, and volatile ethers.

The at least one solvent may comprise up to about 95% by weight of the composition, such as up to about 90% by weight, up to about 85% by weight, up to about 80% by weight, up to about 75% by weight, up to about 70% by weight, up to about 65% by weight. , may be present in the composition in an amount of up to about 60% by weight, up to about 55% by weight, or up to about 50% by weight. For example, at least one solvent may be present in the composition in an amount ranging from about 40% to about 95%, such as from about 50% to about 90%, or from about 60% to about 85%, or from about 65% to about 80%. It can exist.

silicone elastomer

The composition may optionally further include at least one silicone elastomer. Surprisingly, in certain embodiments, at least one silicone elastomer can improve properties such as thickness and water resistance of the film without significantly affecting the mechanical or optical properties of the film. In other embodiments, the addition of at least one silicone elastomer may reduce wettability by sebum, which will readily prevent loss of tightening properties of the film. At least in certain embodiments, it may be advantageous to select a silicone elastomer with more than 1% active material (AM), such as more than 2% AM.

The at least one silicone elastomer may be selected, for example, from at least one silicone crosspolymer dispersed in at least one oil. In certain embodiments, the at least one silicone crosspolymer may be selected from dimethicone crosspolymers, such as dimethicone/vinyl dimethicone crosspolymer and dimethicone/phenyl vinyl dimethicone crosspolymer. In other embodiments, the silicone crosspolymer may be modified with one or more groups selected from alkyl, polyether, polyglycerin groups. For example, the alkyl modified silicone crosspolymer can be selected from vinyl dimethicone/lauryl dimethicone crosspolymer, cetearyl dimethicone crosspolymer, and C ₃₀ -C ₄₅ alkyl cetearyl dimethicone crosspolymer. Non-limiting examples of polyether modified silicone crosspolymers include dimethicone/PEG-10/15 crosspolymer. Examples of alkyl and polyether modified silicone crosspolymers can be selected, for example, from PEG-10/lauryl dimethicone crosspolymer and PEG-15/lauryl dimethicone crosspolymer. Examples of polyglycerin modified silicone crosspolymers include dimethicone/polyglycerin-3 crosspolymer and lauryl dimethicone/polyglycerin-3 crosspolymer.

In at least certain embodiments, the silicone polymer does not contain polyethylene glycol or polypropylene groups, or hydrophilic moieties. Optionally, the silicone elastomer may be a silicone organic blend isododecane (and) dimethicone crosspolymer (18% AM) sold under the trade name EL-8040 ID by Dow Corning or dimethicone/bis, sold under the trade name EL-8050 ID. -Isobutyl PPG-20 crosspolymer (17% AM in isododecane); or isododecane (and) vinyldimethyl/trimethylsiloxysilicate stearyl dimethicone crosspolymer (20% AM in isododecane) sold under the name GEL BELSIL RG90 by Wacker. You can.

The silicone crosspolymer may be dispersed in at least one oil. In certain embodiments, the oil can be selected from silicone oils, such as cyclic and linear organopolysiloxanes. Cyclic organopolysiloxanes include, for example, cyclotetrasiloxane; cyclopentasiloxane; and methylated cyclic organopolysiloxanes such as octamethylcyclotetrasiloxane and decamethylcyclopentasiloxane. Non-limiting examples of linear organopolysiloxanes include low molecular weight dimethicone; high molecular weight dimethicone; Alkyl derivatives of linear organopolysiloxanes, such as cetyl dimethicone and lauryl trimethicone; Aryl derivatives of linear organopolysiloxanes, such as phenyl trimethicone; and hydroxylated derivatives of linear organopolysiloxanes, such as dimethiconol. In other embodiments, the oil is an organic oil, such as mineral oil; linear and branched alkanes such as isododecane; triethylhexanoin; and squalane.

In some embodiments, the at least one silicone crosspolymer is present in an amount of from about 5% to about 35% by weight, such as from about 10% to about 20% by weight, or from about 25% by weight relative to the total weight of the silicone elastomer blend. It may comprise about 35% by weight, or about 20% to about 30% by weight. The at least one oil may be present in an amount of from about 65% to about 95%, such as from about 80% to about 90%, or from about 65% to about 75%, or about 70% by weight relative to the total weight of the silicone elastomer blend. % to about 80% by weight.

In various exemplary embodiments, the silicone elastomer blend comprises about 20% to about 30% dimethicone/vinyl dimethicone crosspolymer. In a further exemplary embodiment, the silicone elastomer blend comprises about 70% to about 80% by weight dimethicone. In yet a further exemplary embodiment, the silicone elastomer blend comprises from about 20% to about 30% by weight dimethicone/vinyl dimethicone crosspolymer and from about 70% to about 80% by weight dimethicone.

For example, dimethicone (and) dimethicone/vinyl dimethicone crosspolymer, KSG-21 (27% active substance) under the product name KSG-16, all sold by Shin Etsu (INCI name: Dimethicone/ PEG-10 dimethicone vinyl dimethicone crosspolymer), KSG-20 (95% active) (INCI name: PEG-10 dimethicone crosspolymer), KSG-30 (100% active) (INCI name: Lauryl PEG -15 dimethicone vinyl dimethicone crosspolymer), KSG-31 (25% active substance) (INCI name: Lauryl PEG-15 dimethicone vinyl dimethicone crosspolymer), KSG-32 or KSG-42 or KSG-320 or KSG-30 (25% active) (INCI name: Lauryl PEG-15 dimethicone vinyl dimethicone crosspolymer), KSG-33 (20% active) Lauryl PEG-15 dimethicone vinyl dimethicone crosspolymer, KSG-210 (25% active substance) (INCI name: dimethicone/PEG-10/15 crosspolymer), KSG-310 (lauryl modified polydimethylsiloxane polyoxyethylenated in mineral oil), KSG-330 and KSG- PEG-15/lauryl'dimethicone crosspolymer of 340, and DC9010 (9% active) and DC9011 (11% active) (INCI name: PEG-12 dimethicone crosspolymer), cyclopentasiloxane (and) dimethicone crosspolymer of DC9040, all sold by Dow Corning, and Dimethicone (and) dimethicone crosspolymer of DC9041; Alternatively, silicone elastomers may be selected, such as products from the VELVESIL family sold by Momentive, such as Velvesil 125 and Velvesil DM.

Other examples of silicone elastomers include KSG-710 (25% active material, INCI name: dimethicone/polyglycerin-3 crosspolymer), all from Shin-Etsu; and KSG-820, KSG-830 and KSG-840, wherein KSG-820, KSG-830 and KSG-840 all contain different diluents, i.e. 820 is isododecane, 830 is triethyl hexanoin, and 840 is squalene. It is dimethicone/polyglycerin-3 crosspolymer (INCI).

The at least one silicone elastomer may be present in an amount of less than about 10% by weight, such as less than about 8% by weight, less than about 5% by weight, less than about 4.5% by weight, less than about 4% by weight, less than about 3.5% by weight, about 3 wt% or less, about 2.5 wt% or less, about 2 wt% or less, about 1.5 wt% or less, about 1 wt% or less, about 0.75 wt% or less, about 0.5 wt% or less, about 0.25 wt% or less, about 0.2 wt. % or less, or up to about 0.1% by weight. In certain embodiments, the at least one silicone elastomer is present in an amount of from about 1% to about 10%, such as from about 2% to about 8%, from about 3% to about 6%, or about % by weight of the composition. It may be present in an amount ranging from 4% by weight to about 5% by weight.

humectant

Optionally, compositions according to the present disclosure may include at least one humectant or humectant. Surprisingly, at least in certain embodiments, at least one humectant can improve the optical properties and feel of a film formed by the composition on the skin without adversely affecting the mechanical properties of the film.

By way of example only, humectants or humectants include glycerin and glycols such as propylene glycol, butylene glycol, dipropylene glycol and diethylene glycol, glycol ethers such as monopropylene, dipropylene and tripropylene glycol alkyl(C ₁ -C ₄ ) may be selected from polyhydroxy compounds including, but not limited to, ethers, monoethylene, diethylene, and triethylene glycol.

At least one humectant may be present in up to about 20% by weight of the composition, such as up to about 15% by weight, up to about 14% by weight, up to about 13% by weight, up to about 12% by weight, up to about 11% by weight, up to about 10% by weight. , about 9% by weight or less, about 8% by weight or less, about 7% by weight or less, about 6% by weight or less, about 5% by weight or less, about 4% by weight or less, about 3% by weight or less, about 2% by weight or less, about It may be present in the composition in an amount of up to 1% by weight, or up to about 0.5% by weight.

water

Optionally, at least in certain embodiments, water may be added to compositions according to the present disclosure. Surprisingly, in certain non-limiting embodiments, water can improve the properties of the film formed by the composition on the skin, such as Young's modulus, transparency, cohesion, and thickness.

Water may comprise less than about 15% by weight, less than about 12% by weight, less than about 10% by weight, less than about 9% by weight, less than about 8% by weight, less than about 7% by weight, less than about 6% by weight, or less than about 5% by weight. Hereinafter, it may be included in the composition in an amount of about 4% by weight or less, about 3% by weight or less, about 2% by weight or less, about 1% by weight or less, or about 0.5% by weight or less. In at least certain embodiments, the composition is anhydrous or substantially anhydrous. In other embodiments, the composition may be in the form of a water-in-oil (W/O) emulsion.

In at least certain embodiments, it may be advantageous to include water and at least one humectant, such as water and glycerin, together in the composition.

coloring agent

The composition may further include at least one colorant to form a colored film on the skin, which may be useful, for example, in hiding certain skin imperfections. In various embodiments, the at least one colorant can be selected from dyes, pigments, and nacre.

At least one colorant may be selected from, for example, dyes. Non-limiting examples of dyes include Sudan Red, D & C Red 17, D & C Green 6, β-carotene, soybean oil, Sudan Brown, D & C Yellow 11, D & C Violet 2, Contains D & C Orange 5, Quinoline Yellow and Annatto.

In various embodiments, the at least one colorant can be selected from pigments. As used herein, the term “pigment” is intended to mean a white or colored mineral or organic particle that is insoluble in the composition in which it is present and has the purpose of coloring and/or opacifying the resulting film.

For example, usable inorganic pigments include titanium oxide, zirconium oxide, cerium oxide, zinc oxide, iron oxide, chromium oxide, ferric blue, manganese violet, ultramarine blue, and Contains chromium hydrate. For example, pigments may be selected from titanium dioxide and red, black, and/or yellow iron oxides, as well as mixtures thereof.

In a further embodiment, pigments may be used, with a structure that may be of the type, for example, silica microspheres containing iron oxide. An example of a pigment with this structure is the product sold under the reference number PC Ball PC-LL-100 P by the company Miyoshi, consisting of silica microspheres containing yellow iron oxide.

By further example, organic pigments that can be used include nitroso, nitro, azo, xanthene, pyrene, quinoline, anthraquinone, triphenylmethane, fluorane, phthalocyanine, metal complex, isoindolinone, isoindoline, quina. Includes cridone, perrinone, perylene, diketopyrrolopyrrole, indigo, thioindigo, dioxazine, triphenylmethane and quinophthalone compounds. For example, organic pigments include carmine lake, carbon black, aniline black, azo yellow, quinacridone, phthalocyanine blue, in the Color Index reference numbers CI 42090, 69800, 69825, 73000, 74100 and Blue pigments classified as 74160, yellow pigments classified in the color index with reference numbers CI 11680, 11710, 15985, 19140, 20040, 21100, 21108, 47000 and 47005, in the color index with reference numbers CI 61565, 61570 and 74260 classified Green pigments, classified in the color index with reference numbers CI 11725, 15510, 45370 and 71105. Orange pigments, with reference numbers CI 12085, 12120, 12370, 12420, 12490, 14700, 15525, 15580, 15620, 15 in the color index. 630, 15800, 15850, 15865, 15880, 17200, 26100, 45380, 45410, 58000, 73360, 73915, and 75470, and as described in patent FR 2 679 771, can be selected.

Mother-of-pearl is made of mica coated with pigments of white pearlescent color, such as titanium or bismuth oxychloride, pigments of colored pearlescent color, such as titanium mica with iron oxide, especially ferric blue or titanium mica with chromium oxide, organic of the types mentioned above. Titanium mica with pigment, and pearlescent pigments based on bismuth oxychloride.

One or more colorants may be present in an amount of up to about 5% by weight, such as up to about 4.5%, up to about 4%, up to about 3.5%, up to about 3%, up to about 2.5%, about 2% by weight, based on the weight of the composition. % or less, up to about 1.5% by weight, up to about 1% by weight, up to about 0.75% by weight, up to about 0.5% by weight, up to about 0.25% by weight, up to about 0.2% by weight, or up to about 0.1% by weight. May be included arbitrarily.

It should be understood that the greater the amount of colorant added, the greater the effectiveness of the film in hiding skin imperfections such as pores, pimples, dark spots, etc. on the skin. Accordingly, one of ordinary skill in the art will be able to select the appropriate amount of colorant for the composition, keeping in mind the intended use of the final formulation.

film

When a composition according to the present disclosure is applied to the skin, the at least one thermoplastic elastomer, at least one tacky polymer, and at least one filler come together to form a matrix to form a film on the skin. Films formed by the compositions described herein form rapidly, are long-lasting and permanent, and have advantageous optical properties for skin tightening films, such as transparency, matte effect, and soft focus effect, which blur skin imperfections and are not visible to the eye. It helps make it less noticeable.

Additionally, as discussed above, compositions according to the present disclosure have a greater stiffness than human skin, thereby forming films capable of tightening. Human skin has a Young's modulus ranging from 10 kPa to 100 kPa; Films for skin tightening should have a Young's modulus greater than 100 kPa. The film formed by the composition may have a thickness greater than 500 kPa (0.5 MPa) in some embodiments, greater than 1000 kPa (1 MPa) in some embodiments, greater than 5000 kPa (5 MPa) in some embodiments, and even 10,000 kPa in some embodiments. (10 MPa). Additionally, the composition according to the present disclosure has a sufficient consistency G * and a phase angle of less than 45° to form an effective and durable film on the skin.

Therefore, the amounts and ingredients of the composition should be selected to provide a film on the skin that allows skin tightening while also blurring skin imperfections.

In various exemplary embodiments, for best film properties, the total amount of thermoplastic elastomer, tacky polymer and filler should be greater than about 10 weight percent, such as greater than about 15 weight percent, or about 20 weight percent, based on the total weight of the composition. It may be advantageous to exceed .

In yet a further exemplary embodiment, for best film properties, the amounts of thermoplastic elastomer and tacky polymer are such that the thermoplastic elastomer:tacky polymer ratio ranges from about 1:10 to 10:1, from about 1:5 to 5:1. It may be advantageous to select it to be in the range, or about 1:1 to 8:1.

The film may form rapidly after the composition is applied to the skin, for example, within less than about 30 minutes, less than about 20 minutes, less than about 10 minutes, or less than about 5 minutes.

Films according to the present disclosure can last a long time. For example, once the composition is applied to the skin to form a film, the film remains substantially intact on the skin for a period of at least about 12 hours, such as at least about 24 hours, at least about 48 hours, or at least about 72 hours. There may be.

Films can also be permanent. For example, the film may not come off when rubbed, sweated, or when the film comes in contact with water, makeup products, lotions, or other products that the user may wish to apply to the skin. .

method

A method of improving the appearance of the skin is also disclosed, comprising applying a composition according to the present disclosure onto the skin to form a film on the skin. Methods include providing tightening of the skin, e.g., removing wrinkles, bags under the eyes, etc., and/or blurring or hiding skin imperfections, e.g., hiding pimples, pores, dark spots, etc.

Depending on the various embodiments, different compositions may be applied to the skin to form films with different properties, such as the compositions comprising greater or lesser amounts of pigment depending on the extent to which skin imperfections are to be concealed. .

It is to be understood that as used herein, terms such as “the,” “an,” or “an” mean “at least one” and should not be limited to “only one” unless clearly indicated to the contrary. Thus, for example, reference to a “part” includes instances having two or more such parts, unless the context clearly dictates otherwise.

Unless explicitly stated otherwise, any method detailed herein should not be construed as requiring its steps to be performed in a particular order. Accordingly, unless a method claim actually enumerates the order in which its steps must be followed or unless it is specifically stated otherwise in the claims or detailed description that the steps are to be limited to a particular order, no particular order is intended to be implied.

Although various features, elements or steps of a particular embodiment may be disclosed using the conjunction “comprising,” alternative embodiments are implied, including those that may be described using the conjunction “consisting of” or “consisting essentially of.” You must know that it will happen. Therefore, for example, alternative embodiments implied with respect to a method comprising A+B+C include embodiments in which the method consists essentially of A+B+C and embodiments in which the method consists essentially of A+B+C. Includes. The phrase “at least one of A, B and C” is intended to include “at least one A or at least one B or at least one C” and also “at least one A and at least one B and at least one We want to include "C" of

All ranges and amounts provided herein are intended to include subranges and amounts using any disclosed values as end points. Therefore, the range “1% to 10%, such as 2% to 8%, such as 3% to 5%” is equivalent to “1% to 8%”, “1% to 5%”, “2% to 10%”, etc. We intend to include the scope of. All numbers, quantities, ranges, etc., whether or not explicitly stated as such, are intended to be qualified by the term “about.” Likewise, a given range of “about 1% to 10%” allows the term “about” to modify both the 1% and 10% endpoints.

It is understood that when amounts of ingredients are provided, they are intended to indicate the amount of active substance.

It should be noted that, unless otherwise indicated, all numbers indicating amounts of ingredients, reaction conditions, etc. used in the specification and claims are in all cases modified by the term “about.” Therefore, unless otherwise indicated, the numerical parameters detailed in the following specification and appended claims are approximations that may vary depending on the desired properties that the present disclosure is intended to achieve.

Notwithstanding that the numerical ranges and parameters detailing the broad scope of the present disclosure are approximations, unless otherwise indicated, the numerical values recited in specific examples are written as accurately as possible. However, any numerical value inherently contains some degree of error necessarily resulting from the standard deviation found in its respective test measurements. The following examples are intended to illustrate, but are not limiting in nature, embodiments of the present disclosure.

Compositions and methods according to the present disclosure may include or consist of the elements and limitations described herein, as well as any additional or optional ingredients, components, or limitations described herein or otherwise known in the art. It may be, or may consist essentially of these.

It will be apparent to those skilled in the art that various modifications and changes may be made in the delivery system, composition, and method of the present invention without departing from the spirit or scope of the present invention. Accordingly, the present invention is intended to cover such modifications and variations of the present invention as long as they fall within the scope of the appended claims and their equivalents.

Example

The following examples are provided for illustrative purposes only and are not intended to be limiting.

In each of the following examples, the amounts of ingredients given are relative to the active substance (AM).

Dynamic Mechanical Analysis (DMA)

The Young's modulus determination of the films in all examples was as follows. Films were prepared by casting the solution onto a Teflon plate using an 8" draw down bar and the films were dried overnight in an oven at 40°C. Dry films using a DMA Q800FR from TA instruments. The stress-strain response was measured from 0% strain to 200% strain at a rate of 100% strain/min at 32°C, and then the Young's modulus of the film was calculated from the slope of the stress-strain curve of the linear viscoelastic model. decided.

Scanning electron microscopy (SEM) measurements

Film samples for SEM were prepared using the same method as for DMA measurements. Afterwards, the film was cut into 5x5 mm pieces and loaded onto a stage with double-sided carbon tape. Samples were scanned with a Hitachi TM-1000 tabletop SEM.

Rheology measurement method

The rheology of the sample solution was measured using a Rheometer AR-G2 from TA Instruments. Dynamic vibration mode was used with parallel plates of 20 mm diameter with a gap of 200 μm.

Strain sweeps from 0.001% to 1000% at a vibration frequency of 1 rad/s were applied to the samples at 32°C. For each measured sample, the elastic modulus G ' and viscous modulus G" values at 10% strain were recorded. The complex elastic modulus G * (consistency) and phase angle δ collected at 10% strain (linear viscoelastic model) are calculated as follows: It was calculated from the elastic modulus G ' and viscous modulus G" by the equations:

Haze and transparency - BYK Haze-Guard

The film was prepared by casting the solution onto a clear plastic film using an 8" drawdown bar and dried on the bench for 3 hours. The transparency and haze of the film were measured using a BYK Haze-Guard instrument.

Glossiness - BYK Glossmeter

The film was prepared by casting the solution onto a clear plastic film using an 8" drawdown bar and dried on the bench for 3 hours. The gloss and matteness of the film was measured using a BYK glossmeter.

film transmittance

Films were prepared by casting the solution onto a Teflon plate using an 8" drawdown bar and the films were dried overnight in an oven at 40°C. The films were peeled and cut into 5x5 cm pieces. Each piece was soaked in 2 mL of water. The top of the filled scintillation vial was covered and the weight of each vial was measured immediately and at different time points using a piece of Parafilm. The water weight loss of the different films was plotted and the evaporation was calculated by fitting the evaporation curve with a linear function, with the following equation: where ( J ) is the water vapor permeation flux; ) is the thickness of the film; ( Δp ) is the water vapor pressure difference between the space sealed by the film in the vial and the environment outside the film:

P = J/(△p/l)

contact angle measurement

Films were prepared by casting the solution onto a glass slide using an 8" drawdown bar and dried on the bench overnight. The contact angle of the film on the glass slide was measured with a Biolin Scientific Attension Tensiometer. .

drying speed

Films were prepared by casting the solution onto a clear plastic film using an 8" drawdown bar and weighed periodically over a period of 1 hour.

internal restraint

The film was prepared by casting the solution onto the nitrile band using an 8" drawdown bar and dried for a period of 1 hour. When the film shrank upon drying, the surface of the nitrile band was measured by image analysis.

Transparency, uniformity and whiteness - colorimeter MINOLTA

The film was prepared by casting the solution onto a clear plastic film using a drawdown bar (2 mil) and allowed to dry on the bench for 1 hour. To calculate the transparency, uniformity, and whiteness of the film, L, a*, b*, and Y of the film and skin-colored sheet standards and black and white standards were measured using a Minolta colorimeter.

Lasting power and coverage

The film was applied to the cheeks of three quality assessors who had visible pimples and pores along the nose/cheek area and left on for 6 hours. Sustainability was evaluated through before/after photos. Shininess, pore hiding, and defect coverage were evaluated both before and after.

Example 1: Association of thermoplastic elastomer, adhesive polymer, and filler

As a thermoplastic elastomer, Kraton (25%) was dispersed in isoparaffin oil with a mechanical stirrer and heated to 90°C. Stirring was continued at 90°C for 1-2 hours until all Kraton polymer was dissolved and the polymer solution became clear. In a plastic container, the desired amount of oil dispersion (49% in isododecane) and silica silylate were added to the specified ratio of kraton/isoparaffin oil solution and the solution was blended in a high speed mixer at 2500 rpm/min for 5 minutes. Mixed. The final solution was kept at room temperature and sealed to avoid evaporation of the solvent.

Table 1 below shows a comparison of films formed from a composition prepared according to the present disclosure (Ex. 1) and three comparative compositions (Ex. 1C-1; 1C-2; 1C-3).

Table 1: Demonstration of the combination of thermoplastic elastomers, adhesive polymers and fillers for superior performance.

Formulations and films were evaluated as detailed above. To achieve good film properties the formulation must be a gel, so from the examples for best results the consistency G * of the sample should exceed about 100 Pa (10% strain) and the phase angle should be less than about 45°. If the fluidity of the formulation is too great, the film will be too thin and will not perform well. Therefore, Examples 1 and 1C-1 satisfied these conditions of G * > 100 Pa and phase angle < 45°.

Example 1 has the best Young's modulus and best consistency, providing a film with the best properties for skin tightening, demonstrating the excellent performance of the combination of thermoplastic elastomer, adhesive polymer, and filler.

Example 2: Thermoplastic elastomer:adhesive polymer ratio

The procedure for preparing the composition of Example 2 was the same as described above for Example 1. Table 2 below shows a comparison of formulations according to the present disclosure and films formed therefrom (Ex. 2a; 2b; 2c) with two comparative compositions (Ex. 2C-1; 2C-2).

<Table 2> Selection of optimal minimum/maximum ratio of thermoplastic elastomer:adhesive polymer

Formulations and films were evaluated as detailed above. From the results, Ex. 2a, 2b, and 2c all had excellent consistency of G *>100 Pa and phase angles of less than 45°, as well as Young's moduli of >100 kPa. Ex with low Young’s modulus. 2C-1 (without oil dispersion) was too soft and Ex. 2C-2 (without kraton polymer) was too thin. Therefore, the results showed that with high elastomer (kraton) content, too soft films can be produced, while with high content of tacky polymer (oil dispersion) the fluidity of the formulation is too high. As a result, the film becomes too thin and its performance on the skin is not good. This shows that the optimal ratio of thermoplastic elastomer to adhesive polymer is in the range of 1:5 to 5:1.

Example 3: Evaluation of different adhesive polymers

Example 3A: T _g > Evaluation of different adhesive polymers at 25°

As a thermoplastic elastomer, Kraton (25%) was dispersed in isoparaffin oil with a mechanical stirrer and heated to 90°C. Stirring was continued at 90°C for 1-2 hours until all Kraton polymer was dissolved and the polymer solution became clear. In a plastic container, the desired amounts of tacky polymer and silica silylate were added to the specified ratio of kraton/isoparaffin oil solution and the solution was mixed in a high speed mixer at 2500 rpm/min for 5 minutes. The final solution was kept at room temperature and sealed to avoid evaporation of the solvent.

Table 3A below shows a comparison of films formed from compositions according to the present disclosure (Ex. 3a; 3b; 3c).

<Table 3A> T _g > Evaluation of different adhesive polymers at 25°C

The films were evaluated as detailed above. The results in Table 3A show that Examples 3a-3c prepared according to the present disclosure containing different tacky polymers with T _g greater than 25°C each provided films with excellent mechanical properties.

Example 3B: Evaluation of polyacid polymers as adhesive polymers

The procedure for preparing the composition of Example 3B was identical to that described above in Example 1. Table 3B below shows a comparison of formulations according to the present disclosure containing polyacids and films formed therefrom (Ex. 3d; 3e; 3f) with a comparative composition without polyacids (Ex. 3C-1).

<Table 3B> Evaluation of polyacid polymers as adhesive polymers

The films were evaluated as described above. The results in Table 3B demonstrate the effectiveness of various proportions of hyperbranched polyacids as adhesive polymers.

Example 4: Efficacy of film to hide skin defects

Example 4A: Composition

The procedure for preparing the composition of Example 4A was identical to that described above in Example 1. Table 4A below shows a composition prepared according to the present disclosure (Ex. 4a) that forms a film on the skin.

<Table 4A> Compositions forming films

The films were evaluated as detailed above. The high transparency and haze achieved by films made according to the present disclosure demonstrate the film's effectiveness in blurring or hiding skin imperfections.

Example 4B: Efficacy of Formed Films

The film prepared according to Example 4A was applied to the periorbital skin area of 6 test subjects with grade 4 under-eye wrinkles and under-eye fat, and 6 test subjects with grade 4 periorbital fine lines. After the film was allowed to dry for 10 minutes, the improvement in the appearance of under-eye wrinkles and crow's feet was periodically evaluated. The results are shown in Table 4B.

<Table 4B> Efficacy of film to improve skin appearance

The clinical evaluation was based on the infraorbital wrinkles and suborbital fat grading atlas (Skin Aging Atlas, vol 1, Caucasian type, Roland Bazin, Eric Doublet, Editions Med'Com, 2007). The results in Table 4B demonstrate that films prepared according to the present disclosure significantly improved the appearance of under-eye bags, under-eye wrinkles, and crow's feet. The results also demonstrate that the improvements have remained nearly constant over time, demonstrating that the film provides long-lasting results.

Example 5: Addition of humectants to improve moisturization

As a thermoplastic elastomer, Kraton (25%) was dispersed in isoparaffin oil with a mechanical stirrer and heated to 90°C. Stirring was continued at 90°C for 1-2 hours until all Kraton polymer was dissolved and the polymer solution became clear. In a plastic container, the desired amounts of adhesive polymer and silica silylate are added to the specified ratio of kraton/isoparaffin oil solution, the solution is mixed in a high-speed mixer at 2500 rpm/min for 5 minutes, and then glycerin is added. Mixing was continued. The final solution was kept at room temperature and sealed to avoid evaporation of the solvent.

Table 5 below shows a film formed from a composition according to the present disclosure containing glycerin (Ex. 5) and a comparative film formed from a composition according to the disclosure except that it does not contain glycerin (Ex. 5C-1). It shows the evaluation compared to .

Table 5: Ability of compositions containing glycerin as a humectant without affecting the performance of the film.

The films were evaluated as described above. The results in Table 5 show that films formed from compositions according to the present disclosure containing a humectant (glycerin) surprisingly moisturize the film on the skin compared to films containing no humectant, without adversely affecting the mechanical or optical properties of the film. It proves that the feeling was provided.

Example 6: Addition of water

As a thermoplastic elastomer, Kraton (25%) was dispersed in isoparaffin oil with a mechanical stirrer and heated to 90°C. Stirring was continued at 90°C for 1-2 hours until all Kraton polymer was dissolved and the polymer solution became clear. In a plastic container, the desired amounts of adhesive polymer and silica silylate are added to the specified ratio of kraton/isoparaffin oil solution, the solution is mixed in a high-speed mixer at 2500 rpm/min for 5 minutes, and then glycerin and/or Mixing was continued by adding water. The final solution was kept at room temperature and sealed to avoid evaporation of the solvent.

Table 6 below shows the evaluation of films formed from compositions according to the present disclosure with glycerin (Ex. 6a) or with glycerin and water (Ex. 6b-6e).

<Table 6> Ability of compositions containing water

The films were evaluated as described above. The results in Table 6 surprisingly demonstrate that adding water to the composition improved the mechanical properties along with improved cohesion as confirmed by the SEM results. Additionally, optical properties such as transparency and soft focus were not affected.

Example 7: Addition of Silicone Elastomer

As a thermoplastic elastomer, Kraton (25%) was dispersed in isoparaffin oil with a mechanical stirrer and heated to 90°C. Stirring was continued at 90°C for 1-2 hours until all Kraton polymer was dissolved and the polymer solution became clear. In a plastic container, the desired amounts of oil dispersion (49% in isododecane), silica silylate, and silicone elastomer (DC EL-8040 ID silicone organic blend, 18% isododecane) were mixed in the specified ratio of kraton/isododecane. It was added to the paraffin oil solution, and the solution was mixed at 2500 rpm/min for 5 minutes in a high-speed mixer. The final solution was kept at room temperature and sealed to avoid evaporation of the solvent.

The film was plated onto a contrast card with an 8 mL drawdown bar. After drying overnight, the film was peeled for DMA measurements or left on the substrate for optical effects.

Table 7 below shows a film formed from a composition according to the present disclosure containing a silicone elastomer (Ex. 7) and a comparative film formed from a composition according to the disclosure except that it does not contain a silicone elastomer (Ex. 7C- It shows the evaluation compared to 1).

<Table 7> Additional benefits derived from silicone elastomers

The films were evaluated as described above. The results in Table 7 demonstrate that the addition of silicone elastomer improved the soft focus effect without adversely affecting transparency, thereby improving the optical properties of the film. Additionally, the water permeability of the film is improved, which is advantageous because it allows sweat to pass through the film, allowing the tightening properties to remain over a long period of time.

Example 8: Evaluation of different silicone elastomers

The procedure for preparing the composition of Example 8 was identical to that described above in Example 7. Table 8 below shows the evaluation of films formed from different silicone elastomers (Ex. 8a, 8b, 8c, 8d).

<Table 8> Selection of silicone elastomer for best performance

The films were evaluated as described above. The results in Table 8, showing large contact angles with water, demonstrate that films containing different silicone elastomers showed excellent water resistance.

Example 9: Evaluation of different fillers

The procedure for preparing the composition of Example 9 was the same as described above in Example 7. Table 9 below shows the evaluation of films formed according to the present disclosure containing different silica particles (Ex. 9a, 9b) compared to comparative films (Ex. 9C-1, 9C-2, 9C-3). .

<Table 9> Selection of filler

The films were evaluated as described above. The results in Table 9 demonstrate that the addition of different silica particles provided improved mechanical properties of the film, as confirmed by Young's modulus measurements. Such improvements are even more pronounced for silicas with particle sizes greater than 100 nm and larger specific surface areas. Optical properties including soft focus and sebum absorption were also improved.

Example 10: Comparison of different filler ratios

The procedure for preparing the composition of Example 10 was the same as described above in Example 7. Table 10 below shows the evaluation of films formed with different amounts of silica particles (Ex. 10a, 10b, 10c, 10d).

<Table 10> Selection of the optimal proportion of fillers in the composition

The films were evaluated as described above. The results in Table 10 demonstrate that different amounts of airgel particles gave satisfactory results.

Example 11: Evaluation of Solvents

The procedure for preparing the composition of Example 11 was the same as described above in Example 7. Table 11 below shows a film formed according to the present disclosure with a solvent having a vapor pressure of 1000 Pa or more at room temperature (Ex. 11), and a comparative film without solvent having a vapor pressure of 1000 Pa or more at room temperature (Ex. 11C-1). It shows the evaluation compared to .

<Table 11> Selection of solvent for optimal performance

The films were evaluated as described above. After the film was applied to the skin area under the eyes of five quality evaluators, its tightening effect was evaluated, and the quality evaluators rated the tightening feeling as strong, average, or weak.

The results in Table 11 demonstrate that the use of a solvent with a vapor pressure of 1000 Pa or more at room temperature gave better results. As can also be seen, solvents with a vapor pressure of less than 25 Pa at room temperature gave poor results, but showed some tightening.

Example 12: Addition of Pigments

As a thermoplastic elastomer, Kraton (25%) was dispersed in isoparaffin oil with a mechanical stirrer and heated to 90°C. Stirring was continued at 90°C for 1-2 hours until all Kraton polymer was dissolved and the polymer solution became clear. In a plastic container, the desired amounts of oil dispersion (49% in isododecane), silica silylate, silicone elastomer (DC EL-8040 ID silicone organic blend, 18% isododecane), and pigment were mixed in the specified ratio of Kraton. /isoparaffin oil was added to the solution, and the solution was mixed in a high-speed mixer at 2500 rpm/min for 5 minutes. The final solution was kept at room temperature and sealed to avoid evaporation of the solvent.

Table 12 below shows a comparison of pigment-containing formulations according to the present disclosure and films formed therefrom (Ex. 12a; 12b; 12c) with two commercially available comparative formulations.

<Table 12> Additional benefits resulting from the addition of pigments

The films were evaluated as described above. Pigment-free Ex. 12a showed a high soft focus effect and a high matte effect that blurred pores. The film lasted a long time. Ex containing pigments. 12b was confirmed to have increased haze and whitening, and Ex. 12b, which had 10 times more pigment. 12c showed significantly greater haze and whitening along with a greater soft focus effect, demonstrating its superior ability to hide more noticeable skin imperfections such as pimples. Ex. 12b and Ex. Both 12c films lasted a long time. Ex. 12a, 12b, and 12c all showed better results than comparable commercial formulations in hiding or blurring skin imperfections and lasted longer.

The results in Table 12 show that the pigment-free film has a soft focus effect and is long-lasting with the ability to blur skin imperfections, while the pigment-containing film is long-lasting with an excellent ability to hide skin imperfections. It proves that it has been done.

Claims (1)

A cosmetic composition for skin tightening, which forms a skin-tightening film.