Composition for film formation

Abstract

To provide a composition for forming a coating, the composition being for forming a coating, made of fibers, directly on the skin by electrostatical spraying, wherein the formed coating has favorable sebum-resistance.SOLUTION: The present invention relates to a composition for forming a coating, the composition containing the following components (a), (b), (c) and (d): (a) a polymer capable of forming a coating; (b) at least one volatile substance selected from alcohol and ketone; (c) a plasticizer; and (d) 3-15 mass% of a non-volatile oiling agent other than component (c), the oiling agent having a viscosity of 50-3,000 mP s at 35°C.SELECTED DRAWING: None

Description

[Technical Field]

[0001] The present invention relates to a composition for forming a film on the skin. [Background technology]

[0002] Various methods for forming a coating by electrostatic spraying are known. For example, Patent Document 1 describes a method for treating skin, which involves electrostatically spraying a composition onto the skin. The composition used in this method contains a liquid insulating substance, a conductive substance, a particulate powder substance, and a thickener. Typically, cosmetic or skincare compositions containing pigments are used as this composition. Specifically, cosmetic foundation is used as the composition. In other words, the invention described in Patent Document 1 is primarily intended for applying cosmetic foundation to the skin by electrostatic spraying for cosmetic purposes.

[0003] Patent Document 2 describes a disposable cartridge for use in an electrostatic spray device for cosmetics. This electrostatic spray device is a handheld, self-contained type. This electrostatic spray device is used to spray cosmetic foundation, similar to Patent Document 1. Furthermore, Patent Document 3 describes a method for producing a film on the skin by electrostatically spraying a composition containing a volatile substance, a polymer having film-forming ability, and an oil that is solid at 20°C directly onto the skin. Furthermore, Patent Document 4 describes a composition for forming a fiber-based film directly onto the skin by electrostatic spraying, which contains a volatile substance, a polymer having film-forming ability, a plasticizer, and a texture modifier. [Prior art documents] [Patent Documents]

[0004] [Patent Document 1] Japanese Patent Publication No. 2006-104211 [Patent Document 2] Special Publication No. 2003-507165 [Patent Document 3] Japanese Patent Publication No. 2018-177797 [Patent Document 4] Japanese Patent Publication No. 2020-63226 [Overview of the Initiative] [Problems that the invention aims to solve]

[0005] However, when an electrostatic spray is performed according to the methods described in Patent Documents 1 and 2 to form a film on the skin, the adhesion between the skin and the film formed by the electrostatic spray is insufficient, and the film may be damaged or peeled off due to external forces such as friction. On the other hand, the film formed on the skin with the compositions of Patent Documents 3 and 4 has excellent adhesion and abrasion resistance, but it has been found that the film formed on the skin weakens and dissolves over time. Therefore, the object of the present invention relates to a composition that can form a protective film on the skin that not only has excellent adhesion and abrasion resistance, but also does not weaken even after a long period of time. [Means for solving the problem]

[0006] Therefore, the inventors have investigated various causes of the weakening of the film formed on the skin over time and have found that the more sebum secreted on the skin after film formation the faster the film weakens. Further investigations have revealed that by including a certain amount of a non-volatile oily component with a viscosity within a certain range at 35°C, in addition to a polymer with film-forming ability, a volatile component, and a plasticizer, a composition can be obtained that can form a film that is highly resistant to sebum secreted on the skin surface where the film is formed and does not weaken, thus completing the present invention.

[0007] In other words, the present invention relates to a film-forming composition containing the following components (a), (b), (c), and (d). (a) Polymers having film-forming ability (b) One or more volatile substances selected from alcohols and ketones (c) Plasticizer (d) Non-volatile oil other than component (c), having a viscosity of 50 mP·s or more and 3000 mP·s or less at 35°C, in an amount of 3% to 15% by mass. [Effects of the Invention]

[0008] By using the composition of the present invention to form a fibrous film on the skin, the resulting film not only exhibits excellent skin compatibility, adhesion, and abrasion resistance, but also excellent sebum resistance. As a result, the film on the skin does not weaken or dissolve even after a long period of time, thus providing long-lasting protection for the skin. [Brief explanation of the drawing]

[0009] [Figure 1] This is a schematic diagram showing the configuration of an electrostatic spray device preferably used in the present invention. [Figure 2] This is a schematic diagram showing how the electrostatic spraying method is performed using an electrostatic spraying device. [Modes for carrying out the invention]

[0010] The coating-forming composition of the present invention contains the above-mentioned components (a), (b), (c), and (d). In this invention, the term "coating formed by fibers" refers to a coating containing fibers made of component (a), and may also refer to a coating in which a liquid substance other than fibers is present around the fibers.

[0011] The polymer having film-forming ability, which is component (a), is generally a substance that can dissolve in the volatile substance of component (b). Here, dissolution means that when component (a) and component (b) are mixed, component (a) is dispersed in component (b) at 20°C, and that the dispersion is uniform to the naked eye, preferably transparent or translucent to the naked eye.

[0012] As the polymer having film-forming ability, an appropriate one is used according to the properties of the volatile substance of component (b). Specifically, the polymer having film-forming ability is roughly classified into a water-soluble polymer and a water-insoluble polymer. In this specification, the "water-soluble polymer" means that, in an environment of 1 atm and 23 °C, after weighing 1 g of the polymer and then immersing it in 10 g of ion-exchanged water, after 24 hours, more than 0.5 g of the immersed polymer dissolves in water. On the other hand, in this specification, the "water-insoluble polymer" means that, in an environment of 1 atm and 23 °C, after weighing 1 g of the polymer and then immersing it in 10 g of ion-exchanged water, after 24 hours, less than 0.5 g of the immersed polymer dissolves in water.

[0013] Examples of the polymer having film-forming ability and being water-soluble include mucopolysaccharides such as pullulan, hyaluronic acid, chondroitin sulfate, poly-γ-glutamic acid, modified corn starch, β-glucan, glucooligosaccharide, heparin, and keratan sulfate, cellulose, pectin, xylan, lignin, glucomannan, galacturonic acid, psyllium seed gum, tamarind seed gum, gum arabic, tragacanth gum, soybean water-soluble polysaccharide, alginic acid, carrageenan, laminaran, agar (agarose), fucoidan, methylcellulose, hydroxypropylcellulose, hydroxypropylmethylcellulose and other natural polymers, partially saponified polyvinyl alcohol (when not used in combination with a crosslinking agent), low-saponified polyvinyl alcohol, polyvinylpyrrolidone (PVP), polyethylene oxide, sodium polyacrylate and other synthetic polymers. These water-soluble polymers can be used alone or in combination of two or more. Among these water-soluble polymers, from the viewpoint of easy film production, it is preferable to use synthetic polymers such as pullulan, partially saponified polyvinyl alcohol, low-saponified polyvinyl alcohol, polyvinylpyrrolidone, and polyethylene oxide. When polyethylene oxide is used as the water-soluble polymer, its number average molecular weight is preferably 50,000 or more and 3,000,000 or less, and more preferably 100,000 or more and 2,500,000 or less.

[0014] On the one hand, examples of polymers having a film-forming ability that is water-insoluble include, for example, fully saponified polyvinyl alcohol that can be insolubilized after film formation, partially saponified polyvinyl alcohol that can be crosslinked after film formation by using it in combination with a crosslinking agent, oxazoline-modified silicones such as poly(N-propanoylethyleneimine) graft-dimethylsiloxane / γ-aminopropylmethylsiloxane copolymer, polyvinyl acetal diethylaminoacetate, zein (the main component of corn protein), polyester, polylactic acid (PLA), acrylic resins such as polyacrylonitrile resin and polymethacrylic acid resin, polystyrene resin, polyvinyl butyral resin, polyethylene terephthalate resin, polybutylene terephthalate resin, polyurethane resin, polyamide resin, polyimide resin, polyamideimide resin, and the like. These water-insoluble polymers can be used alone or in combination of two or more. Among these water-insoluble polymers, it is preferable to use fully saponified polyvinyl alcohol that can be insolubilized after film formation, partially saponified polyvinyl alcohol that can be crosslinked after film formation by using it in combination with a crosslinking agent, polyvinyl butyral resin, polyurethane resin, oxazoline-modified silicones such as poly(N-propanoylethyleneimine) graft-dimethylsiloxane / γ-aminopropylmethylsiloxane copolymer, polyvinyl acetal diethylaminoacetate, zein, and the like.

[0015] As component (a), a polymer having a water-insoluble film-forming ability is preferable, and one or more selected from partially saponified polyvinyl alcohol, low-saponification polyvinyl alcohol, fully saponified polyvinyl alcohol, polyvinyl butyral resin, polyurethane resin, polymethacrylic acid resin, oxazoline-modified silicone, polyvinyl acetal diethylaminoacetate, and polylactic acid are more preferable.

[0016] The content of component (a) in the film-forming composition of the present invention is preferably 1.0% by mass or more, more preferably 2.0% by mass or more, even more preferably 4.0% by mass or more, even more preferably 6.0% by mass or more, and even more preferably 8.0% by mass or more. It is also preferably 35% by mass or less, more preferably 30% by mass or less, even more preferably 25% by mass or less, and even more preferably 20% by mass or less. The content of component (a) in the film-forming composition is preferably 1.0% by mass or more and 30% by mass or less, more preferably 2.0% by mass or more and 25% by mass or less, even more preferably 4.0% by mass or more and 20% by mass or less, and even more preferably 6.0% by mass or more and 20% by mass or less. Furthermore, the amount is preferably 2.0% by mass or more and 35% by mass or less, more preferably 4.0% by mass or more and 30% by mass or less, even more preferably 6.0% by mass or more and 30% by mass or less, even more preferably 6.0% by mass or more and 25% by mass or less, even more preferably 8.0% by mass or more and 20% by mass or less. By including component (a) in the film-forming composition in this proportion, the desired film can be efficiently formed, and a film formed of fibers can be stably formed.

[0017] The volatile substance of component (b) is a substance that is volatile in a liquid state. In the film-forming composition, component (b) is added for the purpose of discharging it from the nozzle tip toward the skin after the film-forming composition has been sufficiently charged by being placed in an electric field, and as component (b) evaporates, the charge density of the film-forming composition becomes excessive, and component (b) further evaporates while being atomized by Coulomb repulsion, ultimately forming a dry film. For this purpose, the vapor pressure of the volatile substance is preferably 0.01 kPa or more and 106.66 kPa or less at 20°C, more preferably 0.13 kPa or more and 66.66 kPa or less, still more preferably 0.67 kPa or more and 40.00 kPa or less, still more preferably 1.33 kPa or more and 40.00 kPa or less, and even more preferably 2.40 kPa or more and 40.00 kPa or less.

[0018] Among the volatile substances of component (b), suitable alcohols include, for example, monohydric chain aliphatic alcohols, monohydric cyclic aliphatic alcohols, and monohydric aromatic alcohols. Examples of monohydric chain aliphatic alcohols include straight-chain or branched-chain alcohols with 1 to 6 carbon atoms, examples of monohydric cyclic aliphatic alcohols include cyclic aliphatic alcohols with 4 to 6 carbon atoms, and examples of monohydric aromatic alcohols include benzyl alcohol and phenylethyl alcohol. Specific examples include methanol, ethanol, isopropyl alcohol, n-propyl alcohol, n-butyl alcohol, 2-butyl alcohol, isobutyl alcohol, 2-methyl-2-propyl alcohol, n-pentanol, 2-pentanol, 3-pentanol, 2-methyl-1-butyl alcohol, 2-methyl-2-butyl alcohol, 3-methyl-1-butyl alcohol, 3-methyl-2-butyl alcohol, neopentyl alcohol, n-hexanol, 2-hexanol, 3-hexanol, 2-methyl-1-pentanol, 3-methyl-1- Examples include pentanol, 4-methyl-1-pentanol, 2-methyl-2-pentanol, 3-methyl-2-pentanol, 4-methyl-2-pentanol, 2-methyl-3-pentanol, 3-methyl-3-pentanol, 2,2-dimethyl-1-butanol, 2,3-dimethyl-1-butanol, 3,3-dimethyl-1-butanol, 2,3-dimethyl-2-butanol, 3,3-dimethyl-2-butanol, 2-ethyl-1-butanol, cyclobutanol, cyclopentanol, cyclohexanol, benzyl alcohol, and phenylethyl alcohol. These alcohols can be used individually or in combination of two or more selected from this list.

[0019] Among the volatile substances of component (b), examples of ketones include ketones having two alkyl groups with 1 to 4 carbon atoms, such as acetone, methyl ethyl ketone, and methyl isobutyl ketone. These ketones can be used individually or in combination of two or more.

[0020] The volatile substance of component (b) can be a combination of one or more substances selected from the alcohol and the ketone. The volatile substance of component (b) is more preferably one or more selected from ethanol, isopropyl alcohol, and n-butyl alcohol, even more preferably one or more selected from ethanol and isopropyl alcohol, and even more preferably ethanol.

[0021] The content of component (b) in the film-forming composition is preferably 45% by mass or more, more preferably 50% by mass or more, even more preferably 55% by mass or more, and even more preferably 60% by mass or more. It is also preferably 98.8% by mass or less, more preferably 98% by mass or less, even more preferably 97% by mass or less, even more preferably 96% by mass or less, even more preferably 94% by mass or less, even more preferably 91% by mass or less, and even more preferably 88.5% by mass or less. The content of component (b) in the film-forming composition is preferably 50% by mass or more and 98.8% by mass or less, more preferably 50% by mass or more and 98% by mass or less, even more preferably 55% by mass or more and 96% by mass or less, and even more preferably 60% by mass or more and 94% by mass or less. Furthermore, the amount is preferably 45% by mass or more and 97% by mass or less, more preferably 50% by mass or more and 94% by mass or less, even more preferably 50% by mass or more and 91% by mass or less, and even more preferably 50% by mass or more and 88.5% by mass or less. By including component (b) in the film-forming composition in this proportion, the desired film can be efficiently formed, and a film formed of fibers can be stably formed. In addition, by including component (b) in the film-forming composition in this proportion, component (b) can be efficiently and sufficiently volatilized from the film-forming composition when performing the electrostatic spray method.

[0022] The mass ratio of component (a) to component (b) in the film-forming composition ((a) / (b)) is preferably 0.010 or higher, more preferably 0.060 or higher, even more preferably 0.080 or higher, even more preferably 0.10 or higher, even more preferably 0.11 or higher, and even more preferably 0.12 or higher, from the viewpoint of efficiently forming the desired film, stably forming a film made of fibers, and efficiently and sufficiently volatilizing component (b) from the film-forming composition when performing an electrostatic spraying method. The ratio (a) / (b) is preferably 0.010 or more and 0.60 or less, more preferably 0.060 or more and 0.33 or less, even more preferably 0.10 or more and 0.25 or less, even more preferably 0.11 or more and 0.20 or less, and even more preferably 0.12 or more and 0.18 or less. It is also preferably 0.060 or more and 0.45 or less, more preferably 0.080 or more and 0.35 or less, even more preferably 0.10 or more and 0.33 or less, even more preferably 0.11 or more and 0.30 or less, and even more preferably 0.12 or more and 0.25 or less.

[0023] Components (c) and (d) are not particularly limited as long as they can be used in the field of cosmetics in general, but for example, one or more selected from polyols, polyoxyalkylene glycols, polyoxyalkylene alkyl ethers, ester oils, silicone oils, hydrocarbon oils, liquid oils and fats, solid oils and fats, higher alcohols, nonionic surfactants, etc., can be used in combination.

[0024] The plasticizer, component (c), improves the adhesion and abrasion resistance of the film to the skin, as well as the film's ability to follow the movement of the skin, and enhances the film's feel against the skin, by imparting flexibility to the film formed by electrostatic spraying.

[0025] Furthermore, the plasticizer for component (c) is selected from those that are evaluated to have plasticizing properties for the water-insoluble film-forming polymer of component (a), according to the evaluation criteria below.

[0026] (Evaluation procedure) (1) Add 8.8g of the oil or other substance to be evaluated to Mighty Vial No. 4 (manufactured by Maruemu Co., Ltd.). (2) Add 1.2 g of a specific component (a) a polymer having film-forming ability to the vial from (1), stir with a spatula to thoroughly disperse the polymer in the oil, and then cap the Mighty vial. If the polymer is in powder form, use it as is for evaluation. If the polymer is in solution form, remove the solvent to precipitate the polymer, then cut it into small pieces of 3 mm × 3 mm × 3 mm or less for evaluation. If the polymer is already in small pieces of 3 mm × 3 mm × 3 mm or less after precipitation, use it as is for evaluation. If the polymer is in film form, cut it into small pieces of 3 mm × 3 mm × 3 mm or less for evaluation. (3) Rotate and agitate the vial from (2) using a mix rotor (MVR-3R (manufactured by AS ONE Corporation)) at a rotation speed of 100 r / min for one week. (Room temperature: 25℃) (4) Leave the vials from (3) to stand at 25°C for 2 hours and visually observe their condition.

[0027] (Evaluation Criteria) • Plasticity present: The polymer is completely dissolved in the oil, etc. (a clear, single-phase solution), or the polymer and oil, etc. are mixed to form a gel. However, if some of the oil, etc. has separated (polymer + oil phase and oil phase), the polymer + oil phase is gel-like. (The polymer does not maintain its shape from before evaluation.) • No plasticizing properties: After standing, the polymer settles, and shaking redisperses the polymer. Further standing causes the polymer to settle again. No dissolution or gelation of the polymer occurs. (The polymer maintains its shape from before evaluation.)

[0028] The plasticizer in component (c) is preferably a compound that readily interacts with functional groups such as hydroxyl groups, esters, and acetals in the structure of the polymer having film-forming ability. Specifically, examples include polyols, polyoxyalkylene glycols (polyethers), polyoxyalkylene alkyl ethers, certain ester oils, certain silicone oils, and nonionic surfactants. However, from the viewpoint of improving abrasion resistance and the feel of the film, it is preferable to include polyols, polyoxyalkylene glycols, glycerin monofatty acid esters, glycerin difatty acid esters, malic acid diesters, N-acyl amino acid esters, ethylhexyl methoxycinnamate, and alkyl benzoate. One or more selected from these can be used in combination.

[0029] Examples of polyols include divalent to hexavalent polyols, such as ethylene glycol, propylene glycol, 1,3-propanediol, glycerin, and 1,3-butylene glycol.

[0030] Examples of polyoxyalkylene glycols include diethylene glycol, triethylene glycol, polyethylene glycol, dipropylene glycol, tripropylene glycol, polypropylene glycol, dibutylene glycol, tributylene glycol, polybutylene glycol, diglycerin, triglycerin, polyglycerin, polyoxyalkylene glycol (containing one or more alkylene oxides such as ethylene oxide, propylene oxide, and butylene oxide as constituent units of oxyalkylene), and mixtures thereof, polyoxyethylene glycerin, polyoxypropylene glyceryl ether, polyoxybutylene glyceryl ether, polyoxyalkylene glyceryl ether (containing one or more alkylene oxides such as ethylene oxide, propylene oxide, and butylene oxide as constituent units of oxyalkylene), and mixtures thereof.

[0031] Examples of polyoxyalkylene alkyl ethers include polyoxyethylene lauryl ether, polyoxyethylene oleyl ether, polyoxypropylene lauryl ether, polyoxypropylene oleyl ether, polyoxybutylene lauryl ether, polyoxybutylene oleyl ether, polyoxyalkylene alkyl ether (containing one or more alkylene oxides such as ethylene oxide, propylene oxide, and butylene oxide as constituent units of oxyalkylene, and having an alkyl group having a linear or branched chain with approximately 1 to 20 carbon atoms), polyoxyethylene methyl glucoside, polyoxypropylene methyl glucoside (containing one or more alkylene oxides such as ethylene oxide, propylene oxide, and butylene oxide as constituent units of oxyalkylene), and mixtures thereof.

[0032] Examples of specific ester oils include glycerin mono-fatty acid esters such as glyceryl monostearate, glyceryl monoisostearate, glyceryl monooleate, and glyceryl monopalmitate; glycerin di-fatty acid esters such as glyceryl distearate, glyceryl diisostearate, glyceryl dioleate, and glyceryl dipalmitate; lactate esters such as cetyl lactate and myristyl lactate; malic acid diesters such as triethyl citrate and diisostearyl malate; amino acid esters such as amino acid ester-2; acyl amino acid esters such as isopropyl lauroyl sarcosinate; ultraviolet absorbers such as ethylhexyl methoxycinnamate; and alkyl benzoates.

[0033] Examples of specific silicone oils include amodimethicone, aminoethylamonopropyl dimethicone, aminopropyl dimethicone, oxazoline-modified silicone, PEG-11 methyl ether dimethicone, PEG / PPG-20 / 22 butyl ether dimethicone, polyglyceryl-3 disiloxane dimethicone, polyglyceryl-3 disiloxane ethyl dimethicone, and lauryl polyglyceryl-3 disiloxane ethyl dimethicone.

[0034] Nonionic surfactants include polyethylene glycol monofatty acid esters such as polyoxyethylene glycol monolaurate and polyoxyethylene glycol monostearate, polypropylene glycol monofatty acid esters such as polyoxypropylene glycol monolaurate and polyoxypropylene glycol monostearate, polybutylene glycol monofatty acid esters such as polyoxybutylene glycol monolaurate and polyoxybutylene glycol monostearate, polyoxyalkylene glycol monofatty acid esters (containing one or more alkylene oxides such as ethylene oxide, propylene oxide, and butylene oxide as constituent units of oxyalkylene) and mixtures thereof, polyoxyalkylene glycol difatty acid esters (containing ethylene oxide, propylene oxide, and butylene oxide as constituent units of oxyalkylene) Examples include those containing one or more alkylene oxides such as alkylates (the two fatty acids may be of the same or different types) and mixtures thereof, fatty acid polyoxyethylene sorbitan, maltitol hydroxyaliphatic alkyl ethers, alkylated polysaccharides, alkyl glucosides, sucrose fatty acid esters, polyoxyethylene hydrogenated castor oil glyceryl, polyoxyethylene sorbitan fatty acid esters, polyoxyethylene-polyoxypropylene block copolymers, tetrapolyoxyethylene-tetrapolyoxypropylene-ethylenediamine condensates, polyoxyethylene-beeswax-lanolin derivatives, alkanolamides, polyoxyethylene-propylene glycol fatty acid esters, polyoxyethylene-alkylamines, polyoxyethylene-fatty acid amides, alkylethoxydimethylamine oxide, trioleyl phosphate, polyoxyethylene fatty acid glyceryl, etc. These plasticizers can be used individually or in combination of two or more.

[0035] The content of component (c) in the film-forming composition is preferably 0.10% by mass or more, more preferably 0.50% by mass or more, even more preferably 1.0% by mass or more, and even more preferably 1.5% by mass or more. It is also preferably 30% by mass or less, more preferably 25% by mass or less, even more preferably 20% by mass or less, and even more preferably 15% by mass or less. The content of component (c) in the film-forming composition is preferably 0.10% by mass or more and 30% by mass or less, more preferably 0.50% by mass or more and 25% by mass or less, even more preferably 1.0% by mass or more and 20% by mass or less, and even more preferably 1.0% by mass or more and 15% by mass or less. It is also preferably 0.50% by mass or more and 30% by mass or less, more preferably 1.0% by mass or more and 25% by mass or less, even more preferably 1.0% by mass or more and 20% by mass or less, and even more preferably 1.5% by mass or more and 15% by mass or less. When the content of component (c) is within this range, the electrostatic spray imparts flexibility to the fiber-formed coating, improving the coating's adhesion to the skin and abrasion resistance, enhancing the coating's ability to follow skin movements, and improving the coating's feel on the skin.

[0036] The mass ratio of component (a) to component (c) in the film-forming composition ((a) / (c)) is preferably 0.033 or higher, more preferably 0.10 or higher, even more preferably 0.20 or higher, even more preferably 0.40 or higher, even more preferably 0.80 or higher, even more preferably 1.0 or higher, and even more preferably 1.5 or higher, from the viewpoint of the flexibility, skin compatibility, adhesion, and abrasion resistance of the film formed by the fibers by electrostatic spraying. It is also preferably 300 or less, more preferably 60 or less, even more preferably 30 or less, even more preferably 20 or less, even more preferably 15 or less, even more preferably 10 or less, and even more preferably 8.0 or less. The (a) / (c) is preferably 0.033 or higher and 300 or less, more preferably 0.10 or higher and 60 or less, even more preferably 0.20 or higher and 30 or less, even more preferably 0.40 or higher and 10 or less, and even more preferably 1.0 or higher and 10 or less. Furthermore, it is preferable that the value be between 0.80 and 20, more preferably between 1.0 and 15, even more preferably between 1.0 and 10, and even more preferably between 1.5 and 8.0.

[0037] Component (d) is a non-volatile oil other than component (c), having a viscosity at 35°C of 50 mP·s or more and 3000 mP·s or less. Here, a non-volatile oil is an oil that is non-volatile at 20°C. On the other hand, in this invention, a non-volatile oil having a viscosity at 35°C of 50 mP·s or more and 3000 mP·s or less means that the viscosity at 35°C of the entire mixture containing one or more non-volatile oils is 50 mP·s or more and 3000 mP·s or less. Therefore, the viscosity at 35°C of one constituent non-volatile oil does not necessarily have to be within this range; it is sufficient that the viscosity at 35°C of the mixture of two or more non-volatile oils is within this range. For example, a non-volatile oil with a viscosity of less than 50 mP·s at 35°C can be mixed with a non-volatile oil with a viscosity of more than 3000 mP·s at 35°C, so that the viscosity of the mixture at 35°C is between 50 mP·s and 3000 mP·s. Alternatively, a thickening agent can be added to a non-volatile oil with a viscosity of less than 50 mP·s at 35°C to adjust its viscosity to between 50 mP·s and 3000 mP·s before use.

[0038] As the non-volatile oil agent used as component (d), one or more types selected from ester oils, silicone oils, hydrocarbon oils, liquid oils and fats, solid oils and fats, higher alcohols, etc., other than component (c), can be used in combination. When one or more of these non-volatile oil agents are included, a combination is used in which the viscosity at 35°C is 50 mP·s or more and 3000 mP·s or less. From the viewpoint of obtaining excellent sebum resistance of the coating, the preferred viscosity at 35°C is 100 mP·s or more, more preferably 150 mP·s or more, even more preferably 170 mP·s or more, even more preferably 200 mP·s or more, also preferably 2800 mP·s or less, more preferably 2500 mP·s or less, even more preferably 2000 mP·s or less, and even more preferably 1700 mP·s or less. The preferred viscosity at 35°C is 100 mP·s to 2800 mP·s, more preferably 150 mP·s to 2500 mP·s, even more preferably 170 mP·s to 2000 mP·s, and even more preferably 200 mP·s to 1700 mP·s.

[0039] Ester oils include octanoic acid esters such as cetyl octanoate, lauric acid esters such as hexyl laurate, myristic acid esters such as octyldodecyl myristate, palmitic acid esters such as octyl palmitate, stearate esters such as isocetyl stearate, isostearate esters such as isopropyl isostearate, isopalmitic acid esters such as octyl isopalmitate, oleic acid esters such as isodecyl oleate, adipic acid diesters such as diisopropyl adipate, sebacate diesters, etc. malate diesters such as diisostearyl malate, isononyl isononanoate, isotridecyl isononanoate, and other isononanoic acid esters, ethylhexanoic acid esters such as cetyl ethylhexanoate, fatty acid esters such as neopentyl glycol diethylhexanoate, pentaerythrityl tetraethylhexanoate, triisostearin, glyceryl diisostearate, triethylhexanoin, dimer dilinoleate (phytosteryl / behenyl), dimer dilinoleate (phytosteryl / isostearyl / cetyl / stearyl / isostearyl / cetyl / Stearyl / Behenyl, Macadamia Nut Fatty Acid Phytosteryl, Tetra(Behenate / Benzoate / Ethylhexanoate) Pentaerythrityl, Tripropylene Glycol Dipivalate, Diisopropyl Sebacate, Isodecyl Neopentanoate, Hexyldecyl Dimethyloctanoate, Cetyl Lactate, Myristyl Lactate, Lanolin Acetate, Cholesteryl 12-Hydroxystearate, Ethylene Glycol Di-2-Ethylhexanoate, Dipentaerythritol Fatty Acid Ester, N-Alkyl Glycol Monoisostearate, Neopentyl Glycol Dicaprate, Phosphorus Diisostearyl iodide, glyceryl di-2-heptylundecanoate, trimethylolpropane tri-2-ethylhexanoate, trimethylolpropane triisostearate, glyceryl trioctanoate, glyceryl triisopalmitate, trimethylolpropane triisostearate, cetyl 2-ethylhexanoate, pentaerythritol tetra-2-ethylhexanoate, glyceryl tri-2-ethylhexanoate, 2-ethylhexyl palmitate, glyceryl trimyristate, glyceride tri-2-heptylundecanoate, castor oil fatty acid methyl ester,Examples include acetoglycerides, 2-heptyl undecyl palmitate, diisobutyl adipate, 2-octyldodecyl N-lauroyl-L-glutamate, di-2-heptyl undecyl adipate, ethyl laurate, di-2-ethylhexyl sebacate, 2-hexyldecyl myristate, 2-hexyldecyl palmitate, di-2-hexyldecyl adipate, triethyl citrate, glycerin mono-fatty acid esters, glycerin di-fatty acid esters, glycerin tri-fatty acid esters, and other glycerides; acyl amino acid diesters such as lauroyl glutamate di(phytosteryl / octyldodecyl); UV absorbers such as ethylhexyl methoxycinnamate; and alkyl benzoates. Of these ester oils, it is more preferable to use one or more selected from glycerides such as pentaerythrityl tetraethylhexanoate, glyceryl diisostearate, triethylhexanoin, tetra(behenic acid / benzoic acid / ethylhexanoic acid) pentaerythrityl, dipentaerythritol fatty acid ester, glycerin di2-heptylundecanoate, glycerin trioctanoate, glycerin triisopalmitate, glycerin tri2-ethylhexanoate, glycerin trimyristate, glyceride tri2-heptylundecanoate, acetoglyceride, glycerin mono-fatty acid ester, glycerin di-fatty acid ester, glycerin tri-fatty acid ester, and acyl amino acid diesters such as di(phytosteryl / octyldodecyl) lauroyl glutamate.

[0040] Examples of hydrocarbon oils include liquid paraffin, squalane, squalene, paraffin, isoparaffin, ceresin, isohexadecane, isododecane, ozokerite, pristane, paraffin wax, petrolatum, and microcrystalline wax. Of these hydrocarbons, it is more preferable to use one or more selected from liquid paraffin, isododecane, paraffin wax, and petrolatum, from the viewpoint of obtaining a coating with excellent resistance to sebum.

[0041] Examples of liquid oils include linseed oil, camellia oil, macadamia nut oil, corn oil, mink oil, olive oil, avocado oil, sasanqua oil, castor oil, safflower oil, rapeseed oil, soybean oil, peanut oil, triglycerin, glyceryl trioctanoate, glyceryl triisopalmitate, apricot kernel oil, cinnamon oil, jojoba oil, grape oil, sunflower oil, almond oil, sesame oil, wheat germ oil, rice germ oil, rice bran oil, cottonseed oil, tea seed oil, evening primrose oil, egg yolk oil, beef tallow, liver oil, and pentaerythritol tetraoctanoate.

[0042] Examples of solid fats include cocoa butter, coconut oil, palm oil, palm kernel oil, beef tallow, sheep tallow, lard, horse tallow, hydrogenated oil, hydrogenated castor oil, Japanese wax, and shea butter.

[0043] Examples of higher alcohols include saturated linear monohydric alcohols and unsaturated monohydric alcohols. Examples of saturated linear monohydric alcohols include dodecanol (lauryl alcohol), toridodecanol, tetradodecanol (myristyl alcohol), pentadecanol, hexadecanol (cetyl alcohol), heptadecanol, octadecanol (stearyl alcohol), nonadecanol, eicosanol (arachidyl alcohol), henicosanol, docosanol (behenyl alcohol), tricosanol, tetracosanol (carnabyl alcohol), pentacosanol, and hexacosanol (ceryl alcohol). Examples of unsaturated monohydric alcohols include oleyl alcohol and elaidyl alcohol.

[0044] Examples of silicone oils include chain-like silicones such as dimethylpolysiloxane (dimethicone), methylphenylpolysiloxane, diphenylpolysiloxane (diphenyldimethicone), diphenylsiloxyphenyl trimethicone, and methylhydrogenpolysiloxane; cyclic silicones such as cyclopentasiloxane methyl trimethicone, octamethylcyclotetrasiloxane, decamethylcyclopentasiloxane, and dodecamethylcyclohexasiloxane; silicone resins forming a three-dimensional network structure; and silicone rubber.

[0045] The content of component (d) in the film-forming composition is 3% by mass or more and 15% by mass or less, from the viewpoint of obtaining a film with excellent sebum resistance. More preferably, it is 3.5% by mass or more and 15% by mass or less, more preferably 4% by mass or more and 15% by mass or less, and even more preferably 5% by mass or more and 15% by mass or less.

[0046] The mass ratio ((c) / (d)) of component (c) to component (d) in the film-forming composition is preferably 0.0033 or higher, more preferably 0.0050 or higher, even more preferably 0.0066 or higher, even more preferably 0.01 or higher, even more preferably 0.03 or higher, even more preferably 0.05 or higher, even more preferably 0.066 or higher, even more preferably 0.1 or higher, even more preferably 0.2 or higher. It is also preferably 30 or lower, more preferably 25 or lower, even more preferably 20 or lower, even more preferably 15 or lower, even more preferably 10 or lower, even more preferably 7.0 or lower, even more preferably 5 or lower, and even more preferably 3 or lower. The (c) / (d) is preferably 0.0033 or more and 30 or less, more preferably 0.0050 or more and 25 or less, even more preferably 0.0066 or more and 20 or less, and even more preferably 0.01 or more and 15 or less. It is also preferably 0.03 or more and 10 or less, more preferably 0.05 or more and 7.0 or less, even more preferably 0.066 or more and 5 or less, even more preferably 0.1 or more and 5 or less, and even more preferably 0.2 or more and 3 or less.

[0047] The mass ratio of component (a) to component (d) in the film-forming composition ((a) / (d)) is preferably 0.0033 or higher, more preferably 0.005 or higher, even more preferably 0.0066 or higher, even more preferably 0.01 or higher, even more preferably 0.02 or higher, even more preferably 0.03 or higher, even more preferably 0.066 or higher, even more preferably 0.1 or higher, even more preferably 0.3 or higher, even more preferably 0.5 or higher, and even more preferably 0.8 or higher. It is also preferably 30 or lower, more preferably 25 or lower, even more preferably 20 or lower, even more preferably 15 or lower, even more preferably 13 or lower, even more preferably 10 or lower, and even more preferably 8.0 or lower. The ratio (a) / (d) is preferably 0.0033 or more and 30 or less, more preferably 0.005 or more and 25 or less, even more preferably 0.0066 or more and 20 or less, even more preferably 0.01 or more and 15 or less, and even more preferably 0.02 or more and 13 or less. Furthermore, it is preferably 0.03 or more and 10 or less, more preferably 0.066 or more and 10 or less, even more preferably 0.10 or more and 8.0 or less, even more preferably 0.30 or more and 8.0 or less, even more preferably 0.50 or more and 8.0 or less, and even more preferably 0.80 or more and 8.0 or less.

[0048] In addition to the components mentioned above, the film-forming composition may also contain conductivity control agents, oils other than components (c) and (d), coloring pigments, extender pigments, dyes, fragrances, repellents, antioxidants, stabilizers, preservatives, various vitamins, water, etc. From the viewpoint of improving conductivity, the conductivity control agent is preferably an alkali metal salt or an ammonium salt, more preferably an ionic surfactant, and even more preferably one or more selected from cationic surfactants and anionic surfactants.

[0049] The content of the conductivity control agent in the film-forming composition is not limited as long as the conductivity of the composition is within the above range, but from the viewpoint of stably forming the film and preventing the conductivity from increasing excessively, it is preferably 0.01% by mass or more and 10% by mass or less, more preferably 0.05% by mass or more, even more preferably 0.1% by mass or more, more preferably 8% by mass or less, even more preferably 6% by mass or less, even more preferably 2.5% by mass or less, and even more preferably 2% by mass or less.

[0050] The viscosity of the film-forming composition is preferably 2 mPa·s or more at 25°C, more preferably 5 mPa·s or more, even more preferably 10 mPa·s or more, even more preferably 30 mPa·s or more, even more preferably 50 mPa·s or more, and even more preferably 80 mPa·s or more, from the viewpoint of stably forming a film on the skin with fibers, spinnability during electrostatic spraying, drying of fibers, and miniaturization of fibers. The viscosity range of the film-forming composition is preferably 2 mPa·s to 3000 mPa·s, more preferably 5 mPa·s to 2000 mPa·s, even more preferably 10 mPa·s to 1500 mPa·s, even more preferably 30 mPa·s to 1000 mPa·s, even more preferably 50 mPa·s to 800 mPa·s, and even more preferably 80 mPa·s to 500 mPa·s. The viscosity of the film-forming composition is measured at 25°C using a B-type viscometer. For example, a B-type viscometer (TVB-10M) manufactured by Toki Sangyo Co., Ltd. can be used. In this case, the measurement conditions are such that the measurement temperature is 25°C. The measurement temperature is the temperature of the film-forming composition. The type of rotor and the rotation speed of the rotor are selected according to the viscosity of the film-forming composition and the specifications of the measuring instrument used. For example, when using the Type B viscometer (TVB-10M) manufactured by Toki Sangyo Co., Ltd., the viscosity of the film-forming composition can be measured at 6 rpm using the M2 rotor if it is 2500 mPa·s or more, at 12 rpm using the M2 rotor if it is 1000 mPa·s or more but less than 2500 mPa·s, at 30 rpm using the M2 rotor if it is 500 mPa·s or more but less than 1000 mPa·s, at 60 rpm using the M2 rotor if it is 100 mPa·s or more but less than 500 mPa·s, and at 60 rpm using the M1 rotor if it is less than 100 mPa·s.Furthermore, the specifications manual for the Type B viscometer (TVB-10M) manufactured by Toki Sangyo Co., Ltd. also describes measurement conditions other than those mentioned above, and viscosity can be measured under other conditions depending on the viscosity of the film-forming composition.

[0051] To form a fiber-formed coating on the skin using the coating-forming composition of the present invention, there are two methods: one in which a fiber-formed coating is formed directly on the skin by electrostatic spraying, and another in which a fiber-formed coating is formed on a substrate by electrostatic spraying and then applied to the skin. Next, the method of forming a fiber-formed coating directly on the skin by electrostatic spraying will be described.

[0052] The film-forming composition is sprayed directly onto the area of ​​human skin where a film is to be formed by an electrostatic spraying method. The electrostatic spraying method includes the step of electrostatically spraying the film-forming composition onto the skin using an electrostatic spraying device. The electrostatic spraying device basically includes a container for holding the composition, a nozzle for dispensing the composition, a supply device for supplying the composition contained in the container to the nozzle, and a power supply for applying voltage to the nozzle.

[0053] Figure 1 shows a schematic diagram illustrating the configuration of an electrostatic spray device preferably used in the present invention. The electrostatic spray device 10 shown in the figure is equipped with a low-voltage power supply 11. The low-voltage power supply 11 is capable of generating a voltage of several volts to more than ten volts. To improve the portability of the electrostatic spray device 10, the low-voltage power supply 11 is preferably composed of one or more batteries. Using batteries as the low-voltage power supply 11 also has the advantage of being easily replaceable as needed. Instead of batteries, an AC adapter or the like can also be used as the low-voltage power supply 11.

[0054] The electrostatic spray device 10 also includes a high-voltage power supply 12. The high-voltage power supply 12 is connected to the low-voltage power supply 11 and includes an electrical circuit (not shown) that boosts the voltage generated by the low-voltage power supply 11 to a high voltage. The boosting electrical circuit generally consists of a transformer, a capacitor, and semiconductor elements.

[0055] The electrostatic spray device 10 is further equipped with an auxiliary electrical circuit 13. The auxiliary electrical circuit 13 is interposed between the low-voltage power supply 11 and the high-voltage power supply 12, and has the function of adjusting the voltage of the low-voltage power supply 11 to ensure stable operation of the high-voltage power supply 12. Furthermore, the auxiliary electrical circuit 13 has the function of controlling the rotational speed of the motor provided in the microgear pump 14, which will be described later. By controlling the rotational speed of the motor, the amount of film-forming composition supplied from the container 15 to the microgear pump 14 is controlled. A switch SW is installed between the auxiliary electrical circuit 13 and the low-voltage power supply 11, and the electrostatic spray device 10 can be started / stopped by switching the switch SW on and off.

[0056] The electrostatic spray device 10 further includes a nozzle 16. The nozzle 16 is made of various conductive materials, including metals, or non-conductive materials, such as plastics, rubber, and ceramics, and is shaped to allow the discharge of a film-forming composition from its tip. A minute space through which the film-forming composition flows is formed inside the nozzle 16 along its longitudinal direction. The cross-sectional size of this minute space is preferably 100 μm or more and 1000 μm or less in diameter. The nozzle 16 is connected to the microgear pump 14 via a conduit 17. The conduit 17 may be made of a conductive or non-conductive material. The nozzle 16 is also electrically connected to a high-voltage power supply 12. This makes it possible to apply a high voltage to the nozzle 16. In this case, to prevent excessive current from flowing if a person comes into direct contact with the nozzle 16, the nozzle 16 and the high-voltage power supply 12 are electrically connected via a current-limiting resistor 19.

[0057] The microgear pump 14, which is in communication with the nozzle 16 via the conduit 17, functions as a supply device that supplies the film-forming composition contained in the container 15 to the nozzle 16. The microgear pump 14 operates on power supplied from the low-voltage power supply 11. The microgear pump 14 is also configured to supply a predetermined amount of film-forming composition to the nozzle 16 under the control of the auxiliary electrical circuit 13.

[0058] A container 15 is connected to the microgear pump 14 via a flexible conduit 18. The container 15 contains a coating-forming composition. Preferably, the container 15 is in a cartridge-type, replaceable form.

[0059] The electrostatic spray device 10 having the above configuration can be used, for example, as shown in Figure 2. Figure 2 shows a handy type electrostatic spray device 10 that is sized to be held in one hand. In the electrostatic spray device 10 shown in the figure, all the components of the configuration diagram shown in Figure 1 are housed in a cylindrical housing 20. A nozzle (not shown) is located at one end 10a in the longitudinal direction of the housing 20. The nozzle is positioned in the housing 20 so as to be convex toward the skin, with the direction of spraying the composition aligned with the longitudinal direction of the housing 20. By positioning the nozzle tip so as to be convex toward the skin in the longitudinal direction of the housing 20, the coating composition is less likely to adhere to the housing, and a stable coating can be formed.

[0060] When operating the electrostatic spray device 10, the user, that is, the person who will be forming a film on the area of ​​skin to be covered by the electrostatic spray, holds the device 10 in their hand and points one end 10a of the device 10, where the nozzle (not shown) is located, towards the area to be covered by the electrostatic spray. Figure 2 shows the state in which one end 10a of the electrostatic spray device 10 is pointed towards the inside of the user's forearm. In this state, the switch of the device 10 is turned on and the electrostatic spray method is performed. When the device 10 is powered on, an electric field is generated between the nozzle and the skin. In the embodiment shown in Figure 2, a positive high voltage is applied to the nozzle, and the skin becomes the negative electrode. When an electric field is generated between the nozzle and the skin, the film-forming composition at the nozzle tip is polarized by electrostatic induction, causing the tip to become cone-shaped. Charged droplets of the film-forming composition are then ejected into the air from the cone tip along the electric field toward the skin. As the solvent component (b) evaporates from the ejected and charged film-forming composition, the charge density on the surface of the film-forming composition becomes excessive. Due to Coulomb repulsion, the droplets repeatedly become finer as they travel through the air and reach the skin. In this case, by appropriately adjusting the viscosity of the film-forming composition, it is possible to volatilize the volatile solvent from the droplets while they are ejected into the air, solidify the polymer of the solute component (a) which has film-forming ability, and form fibers by stretching and deforming due to the potential difference, thereby depositing these fibers on the application site. For example, increasing the viscosity of the film-forming composition makes it easier to deposit the composition in the form of fibers on the application site. This creates a porous coating consisting of fiber deposits on the surface of the application area. Such a porous coating consisting of fiber deposits can also be formed by adjusting the distance between the nozzle and the skin, and the voltage applied to the nozzle.

[0061] During the electrostatic spraying process, a high potential difference is generated between the nozzle and the skin. However, because the impedance is very high, the current flowing through the human body is extremely small. For example, the inventors have confirmed that the current flowing through the human body during the electrostatic spraying process is several orders of magnitude smaller than the current flowing through the human body due to static electricity generated in normal daily life.

[0062] When forming a fiber deposit by electrostatic spraying, the thickness of the fibers, expressed as a circular diameter, is preferably 10 nm or more, more preferably 50 nm or more. It is also preferably 3000 nm or less, more preferably 1000 nm or less, and even more preferably 800 nm or less. The thickness of the fibers can be measured, for example, by observing the fibers at 10,000 times magnification using a scanning electron microscope (SEM), removing defects (fiber clumps, fiber intersections, droplets) from the two-dimensional image, selecting 10 fibers arbitrarily, drawing lines perpendicular to the longitudinal direction of the fibers, and directly reading the fiber diameter. The fibers of the present invention are preferably continuous fibers, and preferably have a length of at least 100 times the thickness of the fiber. For example, the formed coating preferably contains fibers containing component (a) that are preferably 10 μm or longer, more preferably 50 μm or longer, and even more preferably 100 μm or longer. In this specification, a fiber having a length 100 times or more than its thickness is defined as a "continuous fiber." The cross-sectional shape of the fiber is preferably circular or elliptical, and the thickness of the fiber is the diameter in the case of a circular fiber, and the length of the major axis in the case of an elliptical fiber. Furthermore, the coating produced by the electrostatic spraying method is preferably a porous discontinuous coating consisting of a deposit of one or more continuous fibers.

[0063] In the electrostatic spraying method, the film-forming composition is sprayed while charged, and in high humidity conditions, it is affected by moisture in the atmosphere. However, by including a conductivity control agent, this effect can be reduced.

[0064] The method for producing the film-forming composition may involve stirring a mixture containing all the components, but it is preferable to include a step 2 in which, after stirring a mixture 1 containing components other than component (a), component (a) is added and stirred. Alternatively, the method may include a step 1 in which component (a) and a portion of component (b) are mixed, a step 2 in which the remainder of component (b) is mixed with component (c) and component (d), and a step 3 in which the mixture from step 1 and the mixture from step 2 are mixed. These steps 1, 2, and 3 are preferably carried out at room temperature between 10°C and 30°C.

[0065] The distance between the nozzle and the skin depends on the voltage applied to the nozzle, but is preferably 10 mm or more, more preferably 20 mm or more, and even more preferably 40 mm or more. It is also preferably 160 mm or less, more preferably 140 mm or less, and even more preferably 120 mm or less. Having the distance between the nozzle and the skin within this range can improve the film formation. The distance between the nozzle and the skin can be measured using commonly used non-contact sensors, etc.

[0066] Regardless of whether the coating formed by the electrostatic spraying method is porous or not, the basis weight of the coating is 0.10 g / m². 2 Preferably, it is 1.0 g / m 2 It is more preferable that the amount is greater than or equal to 50g / m 2 Preferably, it is 40 g / m 2 The following is more preferable: The basis weight of the formed coating is 0.10 g / m². 2 More than 50g / m 2 Preferably, it is 1.0 g / m 2 More than 40g / m 2 The following is more preferable: By setting the basis weight of the coating in this way, the coating's skin compatibility, adhesion, abrasion resistance, and sebum resistance can be improved.

[0067] With regard to the embodiments described above, the present invention further discloses the following compositions and methods.

[0068] <1> A film-forming composition containing the following components (a), (b), (c), and (d). (a) Polymers having film-forming ability (b) One or more volatile substances selected from alcohols and ketones (c) Plasticizer (d) Non-volatile oil other than component (c), having a viscosity of 50 mP·s or more and 3000 mP·s or less at 35°C, in an amount of 3% to 15% by mass.

[0069] <2> Component (a) is a water-insoluble polymer with film-forming ability, preferably fully saponified polyvinyl alcohol that can be insolubilized after film formation, partially saponified polyvinyl alcohol that can be crosslinked after film formation when used in combination with a crosslinking agent, oxazoline-modified silicone such as poly(N-propanoylethyleneimine) graft-dimethylsiloxane / γ-aminopropylmethylsiloxane copolymer, polyvinyl acetal diethylaminoacetate, zein (a major component of corn protein), polyester, polylactic acid (PLA), polyacrylonitrile resin, polymethacrylic acid resin, and other acrylic resins. The material is one or more selected from fats, polystyrene resins, polyvinyl butyral resins, polyethylene terephthalate resins, polybutylene terephthalate resins, polyurethane resins, polyamide resins, polyimide resins, and polyamide-imide resins, and more preferably one or more selected from fully saponified polyvinyl alcohol that can be insolubilized after film formation, partially saponified polyvinyl alcohol that can be crosslinked after film formation when used in combination with a crosslinking agent, polyvinyl butyral resin, polyurethane resin, oxazoline-modified silicone, polyvinyl acetal diethylaminoacetate, and zein. <1> The coating composition described above. <3> The content of component (a) is preferably 1.0% by mass or more, more preferably 2.0% by mass or more, even more preferably 4.0% by mass or more, even more preferably 6.0% by mass or more, even more preferably 8.0% by mass or more, and also preferably 35% by mass or less, more preferably 30% by mass or less, even more preferably 25% by mass or less, even more preferably 20% by mass or less, and also preferably 1.0% by mass or more and 30% by mass or less, and 2.0% by mass or more and 25% by mass. It is more preferable that the amount be % or less, even more preferable that it be 4.0% by mass or more and 20% by mass or less, even more preferable that it be 6.0% by mass or more and 20% by mass or less, and also preferable that it be 2.0% by mass or more and 35% by mass or less, more preferable that it be 4.0% by mass or more and 30% by mass or less, even more preferable that it be 6.0% by mass or more and 30% by mass or less, even more preferable that it be 6.0% by mass or more and 25% by mass or less, even more preferable that it be 8.0% by mass or more and 20% by mass or less. <1> or <2> The coating composition described above. <4> The content of component (a) is 2.0% by mass or more and 25% by mass or less. <1> ~ <3> A film-forming composition as described in any of the following. <5> The content of component (a) is 6.0% by mass or more and 30% by mass or less. <1> ~ <3> A film-forming composition as described in any of the following. <6> Component (b) preferably has a vapor pressure of 0.01 kPa or more and 106.66 kPa or less at 20°C, more preferably 0.13 kPa or more and 66.66 kPa or less, even more preferably 0.67 kPa or more and 40.00 kPa or less, even more preferably 1.33 kPa or more and 40.00 kPa or less, and even more preferably 2.40 kPa or more and 40.00 kPa or less. <1> ~ <5> A film-forming composition as described in any of the following. <7> The alcohol of component (b) is preferably one or more selected from monohydric chain aliphatic alcohols, monohydric cyclic aliphatic alcohols, and monohydric aromatic alcohols, and more preferably one or more selected from monohydric chain aliphatic alcohols having 1 to 6 carbon atoms in a linear or branched chain, monohydric cyclic aliphatic alcohols having 4 to 6 carbon atoms, benzyl alcohol, and phenylethyl alcohol, and more preferably one or more selected from ethanol, isopropyl alcohol, n-butyl alcohol, phenylethyl alcohol, n-propanol, and n-pentanol. <1> ~ <6> A film-forming composition as described in any of the following. <8> The ketone of component (b) is preferably a ketone having two alkyl groups with 1 to 4 carbon atoms, and more preferably one or more selected from acetone, methyl ethyl ketone, and methyl isobutyl ketone. <1> ~ <7> A film-forming composition as described in any of the following. <9> Component (b) is preferably one or more selected from ethanol, isopropyl alcohol, and n-butyl alcohol, more preferably one or more selected from ethanol and isopropyl alcohol, and even more preferably ethanol. <1> ~ <8> A film-forming composition as described in any of the following. <10> The content of component (b) is preferably 45% by mass or more, more preferably 50% by mass or more, even more preferably 55% by mass or more, even more preferably 60% by mass or more, and also preferably 98.8% by mass or less, more preferably 98% by mass or less, even more preferably 97% by mass or less, even more preferably 96% by mass or less, even more preferably 94% by mass or less, even more preferably 91% by mass or less, even more preferably 88.5% by mass or less, and also preferably 50% by mass or more and 98.8% by mass or less, more preferably 50% by mass or more and 98% by mass or less, even more preferably 55% by mass or more and 96% by mass or less, even more preferably 60% by mass or more and 94% by mass or less, and also preferably 45% by mass or more and 97% by mass or less, more preferably 50% by mass or more and 94% by mass or less, even more preferably 50% by mass or more and 91% by mass or less, and even more preferably 50% by mass or more and 88.5% by mass or less. <1> ~ <9> A film-forming composition as described in any of the following. <11> The content of component (b) is 50% by mass or more and 98% by mass or less. <1> ~ <10> A film-forming composition as described in any of the following. <12> The content of component (b) is 50% by mass or more and 91% by mass or less. <1> ~ <10> A film-forming composition as described in any of the following. <13> Component (c) is one or more selected from polyols, polyoxyalkylene glycols, polyoxyalkylene alkyl ethers, ester oils, silicone oils, hydrocarbon oils, liquid oils and fats, solid oils and fats, higher alcohols and nonionic surfactants. <1> ~ <12> A film-forming composition as described in any of the following. <14> Component (c) is a compound that readily interacts with hydroxyl groups, esters, and acetal moieties in the structure of the film-forming polymer, preferably one or more selected from polyols, polyoxyalkylene glycols, polyoxyalkylene alkyl ethers, specific ester oils, specific silicone oils, and nonionic surfactants, and more preferably one or more selected from polyols, polyoxyalkylene glycols, glycerin monofatty acid esters, glycerin difatty acid esters, malic acid diesters, N-acyl amino acid esters, ethylhexyl methoxycinnamate, and alkyl benzoates. <1> ~ <13> A film-forming composition as described in any of the following. <15> The content of component (c) is preferably 0.10% by mass or more, more preferably 0.50% by mass or more, even more preferably 1.0% by mass or more, even more preferably 1.5% by mass or more, and also preferably 30% by mass or less, more preferably 25% by mass or less, even more preferably 20% by mass or less, even more preferably 15% by mass or less, and also preferably 0.10% by mass or more and 30% by mass or less, more preferably 0.50% by mass or more and 25% by mass or less, even more preferably 1.0% by mass or more and 20% by mass or less, even more preferably 1.0% by mass or more and 15% by mass or less, and also preferably 0.50% by mass or more and 30% by mass or less, more preferably 1.0% by mass or more and 25% by mass or less, even more preferably 1.0% by mass or more and 20% by mass or less, and even more preferably 1.5% by mass or more and 15% by mass or less. <1> ~ <14> A film-forming composition as described in any of the following. <16> The content of component (c) is 0.50% by mass or more and 25% by mass or less. <1> ~ <15> A film-forming composition as described in any of the following. <17> The content of component (c) is 1.0% by mass or more and 20% by mass or less. <1> ~ <15> A film-forming composition as described in any of the following. <18> The preferred viscosity of component (d) at 35°C is 100 mP·s or more and 2800 mP·s or less, more preferably 150 mP·s or more and 2500 mP·s or less, and even more preferably 200 mP·s or more and 2000 mP·s or less. <1> ~ <17> A film-forming composition as described in any of the following. <19> Component (d) is one or more selected from ester oils and hydrocarbon oils. <1> ~ <18> A film-forming composition as described in any of the following. <20> Component (d) is one or more non-volatile oils selected from pentaerythrityl tetraethylhexanoate, glyceryl diisostearate, triethylhexanoin, tetra(behenic acid / benzoic acid / ethylhexanoate) pentaerythrityl, dipentaerythritol fatty acid ester, glycerin di2-heptylundecanoate, glycerin trioctanoate, glycerin triisopalmitate, glycerin tri2-ethylhexanoate, glycerin trimyristate, glyceride tri2-heptylundecanoate, acetoglyceride, glycerin mono-fatty acid ester, glycerin di-fatty acid ester, glycerin tri-fatty acid ester, and other glycerides; acyl amino acid diesters such as di(phytosteryl / octyldodecyl) lauroyl glutamate; neopentyl glycol dicaprate; liquid paraffin; isododecane; paraffin wax; and petrolatum. <1> ~ <19> A film-forming composition as described in any of the following. <21> The content of component (d) is preferably 3% by mass or more and 15% by mass or less, more preferably 3.5% by mass or more and 15% by mass or less, even more preferably 4% by mass or more and 15% by mass or less, and even more preferably 5% by mass or more and 15% by mass or less. <1> ~ <20> A film-forming composition as described in any of the following. <22> The mass ratio of component (a) to component (c) ((a) / (c)) is preferably 0.033 or higher, more preferably 0.10 or higher, even more preferably 0.20 or higher, even more preferably 0.40 or higher, even more preferably 0.80 or higher, even more preferably 1.0 or higher, even more preferably 1.5 or higher, and also preferably 300 or lower, more preferably 60 or lower, even more preferably 30 or lower, even more preferably 20 or lower, and even more preferably 15 or lower. It is more preferably 10 or less, even more preferably 8.0 or less, and also preferably 0.033 to 300, more preferably 0.10 to 60, even more preferably 0.20 to 30, even more preferably 0.40 to 10, even more preferably 1.0 to 10, also preferably 0.80 to 20, more preferably 1.0 to 15, even more preferably 1.0 to 10, and even more preferably 1.5 to 8.0. <1> ~ <21> A film-forming composition as described in any of the following. <23> The mass ratio of component (a) to component (c) ((a) / (c)) is between 0.2 and 30. <1> ~ <22> A film-forming composition as described in any of the following. <24> The mass ratio of component (a) to component (c) ((a) / (c)) is between 1.0 and 10. <1> ~ <22> A film-forming composition as described in any of the following. <25> The mass ratio of component (c) to component (d) ((c) / (d)) is preferably 0.0033 or higher, more preferably 0.0050 or higher, even more preferably 0.0066 or higher, even more preferably 0.01 or higher, even more preferably 0.03 or higher, even more preferably 0.05 or higher, even more preferably 0.066 or higher, even more preferably 0.1 or higher, even more preferably 0.2 or higher, preferably 30 or less, more preferably 25 or less, even more preferably 20 or less, even more preferably 15 or less, and 1 It is more preferably 0 or less, even more preferably 7.0 or less, even more preferably 5 or less, even more preferably 3 or less, preferably 0.0033 or more and 30 or less, more preferably 0.0050 or more and 25 or less, even more preferably 0.0066 or more and 20 or less, even more preferably 0.01 or more and 15 or less, preferably 0.03 or more and 10 or less, more preferably 0.05 or more and 7.0 or less, even more preferably 0.066 or more and 5 or less, even more preferably 0.10 or more and 5 or less, and even more preferably 0.2 or more and 3 or less. <1> ~ <24> A film-forming composition as described in any of the following. <26> The mass ratio of component (c) to component (d) ((c) / (d)) is between 0.03 and 10. <1> ~ <25> A film-forming composition as described in any of the following. <27> The mass ratio of component (c) to component (d) ((c) / (d)) is between 0.2 and 3. <1> ~ <25> A film-forming composition as described in any of the following. <28> The mass ratio of component (a) to component (b) ((a) / (b)) is preferably 0.010 or more, more preferably 0.060 or more, even more preferably 0.080 or more, even more preferably 0.10 or more, even more preferably 0.11 or more, even more preferably 0.12 or more, and also preferably 0.60 or less, more preferably 0.45 or less, even more preferably 0.35 or less, even more preferably 0.33 or less, even more preferably 0.30 or less, even more preferably 0.25 or less, and even more preferably 0.20 or less. A layer is preferable, more preferably 0.18 or less, more preferably 0.010 to 0.60, more preferably 0.060 to 0.33, more preferably 0.10 to 0.25, more preferably 0.11 to 0.20, more preferably 0.12 to 0.18, more preferably 0.060 to 0.45, more preferably 0.080 to 0.35, more preferably 0.10 to 0.33, more preferably 0.11 to 0.30, and more preferably 0.12 to 0.25. <1> ~ <27> A film-forming composition as described in any of the following. <29> The mass ratio of component (a) to component (b) ((a) / (b)) is between 0.10 and 0.25. <1> ~ <28> A film-forming composition as described in any of the following. <30> The mass ratio of component (a) to component (b) ((a) / (b)) is between 0.11 and 0.30. <1> ~ <28> A film-forming composition as described in any of the following. <31> The mass ratio of component (a) to component (d) ((a) / (d)) is preferably 0.0033 or higher, more preferably 0.005 or higher, even more preferably 0.0066 or higher, even more preferably 0.01 or higher, even more preferably 0.02 or higher, even more preferably 0.03 or higher, even more preferably 0.066 or higher, even more preferably 0.1 or higher, even more preferably 0.3 or higher, even more preferably 0.5 or higher, even more preferably 0.8 or higher, preferably 30 or less, more preferably 25 or less, even more preferably 20 or less, even more preferably 15 or less, and 1 It is more preferably 3 or less, even more preferably 10 or less, even more preferably 8.0 or less, preferably 0.0033 to 30, more preferably 0.005 to 25, even more preferably 0.0066 to 20, even more preferably 0.01 to 15, even more preferably 0.02 to 13, preferably 0.03 to 10, even more preferably 0.066 to 10, even more preferably 0.10 to 8.0, even more preferably 0.30 to 8.0, even more preferably 0.50 to 8.0, and even more preferably 0.80 to 8.0. <1> ~ <30> A film-forming composition as described in any of the following. <32> The mass ratio of component (a) to component (d) ((a) / (d)) is between 0.02 and 13. <1> ~ <31> A film-forming composition as described in any of the following. <33> The mass ratio of component (a) to component (d) ((a) / (d)) is between 0.80 and 8.0. <1> ~ <31> A film-forming composition as described in any of the following. <34> It contains a conductivity control agent, oils other than components (c) and (d), coloring pigments, extender pigments, dyes, fragrances, repellents, antioxidants, stabilizers, preservatives, various vitamins, and components selected from water. <1> ~ <33> A film-forming composition as described in any of the following. <35> Preferably, the conductivity control agent contains components that cause the conductivity of the film-forming composition to be between 10 μS / cm and 300 μS / cm at 25°C. <34> The coating composition described above. <36> The conductivity control agent is preferably an alkali metal salt or ammonium salt, more preferably an ionic surfactant, and even more preferably one or more selected from cationic surfactants and anionic surfactants. <34> or <35> The coating composition described above. <37> The conductivity control agent is one or more selected from quaternary ammonium salts and acyl amino acid salts. <34> ~ <36> A film-forming composition as described in any of the following. <38> The content of the conductivity control agent is preferably 0.010% by mass or more, more preferably 0.050% by mass or more, even more preferably 0.10% by mass or more, also preferably 10% by mass or less, more preferably 8.0% by mass or less, even more preferably 6.0% by mass or less, even more preferably 2.5% by mass or less, even more preferably 2.0% by mass or less, also preferably 0.010% by mass or more and 10% by mass or less, more preferably 0.050% by mass or more and 8.0% by mass or less, even more preferably 0.10% by mass or more and 6.0% by mass or less, even more preferably 0.10% by mass or more and 2.5% by mass or less, and even more preferably 0.10% by mass or more and 2.0% by mass or less. <34> ~ <37> A film-forming composition as described in any of the following. <39> The viscosity of the film-forming composition is preferably 2 mPa·s or more at 25°C, more preferably 5 mPa·s or more, even more preferably 10 mPa·s or more, even more preferably 30 mPa·s or more, even more preferably 50 mPa·s or more, even more preferably 80 mPa·s or more, and also preferably 3000 mPa·s or less, more preferably 2000 mPa·s or less, even more preferably 1500 mPa·s or less, and even more preferably 1000 mPa·s or less. It is more preferable that the pressure be 800 mPa·s or less, even more preferable that it be 500 mPa·s or less, and also preferable that it be 2 mPa·s or more and 3000 mPa·s or less, more preferable that it be 5 mPa·s or more and 2000 mPa·s or less, even more preferable that it be 10 mPa·s or more and 1500 mPa·s or less, even more preferable that it be 30 mPa·s or more and 1000 mPa·s or less, even more preferable that it be 50 mPa·s or more and 800 mPa·s or less, and even more preferable that it be 80 mPa·s or more and 500 mPa·s or less. <1> ~ <38> A film-forming composition as described in any of the following. <40> This is a composition for forming a fiber-based coating directly on the skin by electrostatic spraying. <1> ~ <39> A film-forming composition as described in any of the following. <41> A sheet-like composition for skin obtained by electrostatically spraying a composition containing the following components (a), (b), (c), and (d). (a) Polymers having film-forming ability (b) One or more volatile substances selected from alcohols and ketones (c) Plasticizer (d) Non-volatile oil other than component (c), having a viscosity of 50 mP·s or more and 3000 mP·s or less at 35°C, in an amount of 3% to 15% by mass. <42> Component (d) is one or more non-volatile oils selected from pentaerythrityl tetraethylhexanoate, glyceryl diisostearate, triethylhexanoin, tetra(behenic acid / benzoic acid / ethylhexanoate) pentaerythrityl, dipentaerythritol fatty acid ester, glycerin di2-heptylundecanoate, glycerin trioctanoate, glycerin triisopalmitate, glycerin tri2-ethylhexanoate, glycerin trimyristate, glyceride tri2-heptylundecanoate, acetoglyceride, glycerin mono-fatty acid ester, glycerin di-fatty acid ester, glycerin tri-fatty acid ester, phytosteryl / octyldodecyl lauroyl glutamate, neopentyl glycol dicaprate, liquid paraffin, isododecane, paraffin wax, and petrolatum. <41> A sheet-like composition for skin as described above. <43> (c) The plasticizer is one or more selected from polyols, polyoxyalkylene glycols, glycerin monofatty acid esters, glycerin difatty acid esters, malic acid diesters, N-acyl amino acid esters, ethylhexyl methoxycinnamate, and alkyl benzoates. <41> or <42> A sheet-like composition for skin as described above. [Examples]

[0070] The present invention will be described in more detail below with reference to examples. However, the scope of the present invention is not limited to these examples. Unless otherwise specified, "%" means "mass%".

[0071] [Test Example 1] [Examples 1-7, Comparative Examples 1-4] (1) Preparation of a film-forming composition As component (a) of the film-forming composition, polyvinyl butyral (manufactured by Sekisui Chemical Co., Ltd.; trade name: S-Lec B BM-1) was used, and as component (b), 99-degree synthetic alcohol (manufactured by Nippon Synthetic Alcohol Co., Ltd.) was used. Further, as component (c), polyethylene glycol (average molecular weight 400) was used, and as component (d), a mixture of (d1) neopentyl glycol dicaprate and (d2) dipentaerythritol fatty acid ester (melting point 50 °C) was used after adjusting the viscosity at 35 °C. The content of each component shown in Tables 1 and 2 is an effective amount, and the unit is mass%.

[0072] Into a 1000 mL SUS304 measuring cup (manufactured by Trasco Nakayama Co., Ltd.), the mixture of component (a) and component (b) that had been uniformly mixed in advance, and component (c) and component (d) were each weighed and added, and stirred and mixed at room temperature (20 °C to 30 °C) for 10 minutes using a homodisper (T.K. Robomix manufactured by Primix Corporation). At this time, a disperser blade with a blade diameter of 50 mm was used, and the rotation speed was 3000 rpm. After stirring and mixing, a uniform and transparent solution was obtained. This was used as the film-forming composition. The preparation scale of the film-forming composition was such that the total weight of the film-forming composition was 500 g.

[0073] (2) Viscosity of Component (d) The viscosity of component (d) was measured at a measurement temperature of 35 °C using a B-type viscometer after mixing the two kinds of oil agents and storing them in a water bath at 35 °C for 24 hours. Here, the measurement temperature is the temperature of component (d). As the B-type viscometer, a B-type viscometer (TVB-10M) manufactured by Toki Sangyo Co., Ltd. was used, and the types of rotors were M1, M2, M4, and the rotation speed was measured at 3.0 rpm to 60 rpm.

[0074] (3) Electrostatic Spray Process Using an electrostatic spray device 10 having the configuration shown in FIG. 1 and the appearance shown in FIG. 2, the film-forming composition was electrostatically sprayed for 30 seconds onto the hole portion (frame portion) obtained by cutting out a 3 x 8 cm portion from a 5 x 10 cm aluminum foil to form a film formed of fibers. The polymer amount was 6.6 mg (0.275 mg / cm 2 )

[0075] (4) Evaluation of sebum resistance 10 μL of oleic acid (manufactured by Fujifilm Wako Pure Chemical Industries, Ltd.: Wako Grade 1) was dropped onto a film formed from fibers inside an aluminum foil frame as a sebum model, and the time it took for holes to form in the film was measured. The results are shown in Tables 1 and 2.

[0076] [Table 1]

[0077] [Table 2]

[0078] (a) Polyvinyl butyral (manufactured by Sekisui Chemical Co., Ltd.: product name; S-Lec B BM-1) (b) Ethanol (manufactured by Nippon Synthetic Alcohol Co., Ltd.: 99% synthetic alcohol) (c) Polyethylene glycol (manufactured by Sanyo Chemical Industries, Ltd.: PEG-400(-G)) (d1) Neopentyl glycol dicaprate (manufactured by Nisshin Oillio Group Ltd.: Estemol N-01) (d2) Dipentaerythritol fatty acid ester (manufactured by Nisshin Oillio Group Ltd.: Cosmoll 168EV) Volatile silicone oil (manufactured by Shin-Etsu Chemical Co., Ltd.: KF-96L-2CS(-G))

[0079] Table 1 shows that when the viscosity of component (d) at 35°C is between 50 mP·s and 3000 mP·s, it exhibits excellent resistance to sebum. Furthermore, Table 2 shows that when the content of component (d) is between 3% by mass and 15% by mass, it exhibits excellent resistance to sebum. Furthermore, when the film-forming compositions of the examples in Tables 1 and 2 were electrostatically sprayed directly onto the skin to form a film made of fibers, and the adhesion and abrasion resistance of the film were evaluated, all of the films showed excellent adhesion and abrasion resistance.

[0080] [Test Example 2] [Examples 8-11] (1) Preparation of a film-forming composition Polyvinyl butyral was used as component (a) of the film-forming composition, and 99% synthetic alcohol (manufactured by Nippon Synthetic Alcohol Co., Ltd.) was used as component (b). In addition, polyethylene glycol (average molecular weight 400), glycerin, PEG / PPG / polybutylene glycol-8 / 5 / 3 glycerin, 1,3-butylene glycol, or ethylhexyl methoxycinnamate was used as component (c), and neopentyl glycol dicaprate, dipentaerythritol fatty acid ester (melting point 50°C), isononyl isononanoate, or isododecane was mixed with dextrin palmitate to adjust the viscosity at 35°C. The content of each component shown in Table 3 is the effective amount, and the unit is mass%.

[0081] A mixture of components (a) and (b), which had been uniformly mixed beforehand, along with components (c) and (d), were weighed out and added to a 1000 mL SUS304 measuring cup (manufactured by TRUSCO Nakayama Co., Ltd.). The mixture was then stirred and mixed for 10 minutes at room temperature (20°C to 30°C) using a homodisper (manufactured by Primix Co., Ltd.: TK Robomix). At this time, a disper with a blade diameter of 50 mm was used, and the rotation speed was set to 3000 rpm. After stirring and mixing, a uniform, transparent solution was obtained. This was used as the film-forming composition. The preparation scale for the film-forming composition was set so that the total weight of the film-forming composition was 500 g.

[0082] (2) Viscosity of component (d) The viscosity of component (d) was measured at a measurement temperature of 35°C using a B-type viscometer after mixing the non-volatile oil and dextrin palmitate and storing the mixture in a 35°C water bath for 24 hours. Here, the measurement temperature is the temperature of component (d). A B-type viscometer (TVB-10M) manufactured by Toki Sangyo Co., Ltd. was used, with rotor types M1, M2, and M4, and rotation speeds from 3.0 rpm to 60 rpm.

[0083] (3) Electrostatic spraying process Using an electrostatic spraying device 10 having the configuration shown in Figure 1 and the appearance shown in Figure 2, the coating-forming composition was electrostatically sprayed for 30 seconds into a 3x8cm hole (frame portion) cut out from a 5x10cm piece of aluminum foil to form a coating made of fibers. The amount of polymer was 6.6 mg (0.275 mg / cm³). 2 ) was.

[0084] (4) Evaluation of sebum resistance 10 μL of oleic acid (manufactured by Fujifilm Wako Pure Chemical Industries, Ltd.: Wako Grade 1) was dropped onto a film formed from fibers inside an aluminum foil frame as a sebum model, and the time it took for holes to form in the film was measured. The results are shown in Table 3.

[0085] [Table 3]

[0086] *1: PEG-400(-G) (manufactured by Sanyo Chemical Industries, Ltd.) *2: Wilbride S-753 (manufactured by NOF Corporation) *3: KF-96L-2CS(-G) (manufactured by Shin-Etsu Chemical Co., Ltd.) *4: Estemal N-01 (manufactured by Nisshin Oillio Group Ltd.) *5: Cosmoll 168EV (manufactured by Nisshin Oillio Group Ltd.) *6: Marcazole R (manufactured by Maruzen Petrochemical Co., Ltd.) *7: 99% synthetic alcohol (manufactured by Nippon Synthetic Alcohol Co., Ltd.)

[0087] Table 3 shows that all examples exhibit excellent resistance to sebum. [Explanation of Symbols]

[0088] 10 Electrostatic spray device 11 Low-voltage power supply 12 High-voltage power supply 13. Auxiliary Electrical Circuits 14 Micro Gear Pump 15 Container 16 nozzles 17 Conduit 18 Flexible conduits 19 Current-limiting resistor 20 cabinets

Claims

1. A film-forming composition containing the following components (a), (b), (c), and (d). (a) Polymers having film-forming ability (b) One or more volatile substances selected from alcohols and ketones (c) One or more plasticizers selected from polyols, polyoxyalkylene glycols, malic acid diesters, N-acyl amino acid esters, ethylhexyl methoxycinnamate, and alkyl benzoates. (d) A non-volatile oil comprising one or more selected from pentaerythrityl tetraethylhexanoate, pentaerythrityl tetra(behenic acid / benzoic acid / ethylhexanoate), dipentaerythritol fatty acid ester, glycerin mono fatty acid ester, glycerin di fatty acid ester, glycerin tri fatty acid ester, phytosteryl / octyldodecyl lauroyl glutamate, neopentyl glycol dicaprate, paraffin wax, and petrolatum, wherein the viscosity at 35°C is 50 mP·s or more and 3000 mP·s or less. 3% to 15% by mass of the non-volatile oil.

2. The film-forming composition according to claim 1, wherein the viscosity of component (d) at 35°C is 100 mP·s or more and 3000 mP·s or less.

3. The film-forming composition according to claim 1 or 2, wherein the content of component (d) is 3.5% by mass or more and 15% by mass or less.

4. A film-forming composition according to any one of claims 1 to 3, wherein the mass ratio of component (c) to component (d) ((c) / (d)) is 0.03 or more and 10 or less.

5. A film-forming composition according to any one of claims 1 to 4, wherein the mass ratio of component (c) to component (d) ((c) / (d)) is 0.2 or more and 3 or less.

6. A film-forming composition according to any one of claims 1 to 5, wherein the mass ratio of component (a) to component (d) ((a) / (d)) is 0.02 or more and 13 or less.

7. A film-forming composition according to any one of claims 1 to 6, wherein the mass ratio of component (a) to component (d) ((a) / (d)) is 0.8 or more and 8.0 or less.

8. A film-forming composition according to any one of claims 1 to 7, which is a composition for forming a film made of fibers directly on the skin by electrostatic spraying.

9. A sheet-like composition for skin obtained by electrostatically spraying a composition containing the following components (a), (b), (c), and (d). (a) Polymers having film-forming ability (b) One or more volatile substances selected from alcohols and ketones (c) One or more plasticizers selected from polyols, polyoxyalkylene glycols, malic acid diesters, N-acyl amino acid esters, ethylhexyl methoxycinnamate, and alkyl benzoates. (d) A non-volatile oil comprising one or more selected from pentaerythrityl tetraethylhexanoate, pentaerythrityl tetra(behenic acid / benzoic acid / ethylhexanoate), dipentaerythritol fatty acid ester, glycerin mono fatty acid ester, glycerin di fatty acid ester, glycerin tri fatty acid ester, phytosteryl / octyldodecyl lauroyl glutamate, neopentyl glycol dicaprate, paraffin wax, and petrolatum, wherein the viscosity at 35°C is 50 mP·s or more and 3000 mP·s or less. 3% to 15% by mass of the non-volatile oil.

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