Sheet-like cosmetic material

Abstract

A sheet-like cosmetic material according to one embodiment of the present invention, which is obtained by impregnating a sheet with a liquid composition, comprises a sheet and a liquid composition. The sheet is at least one selected from among a woven fabric and a non-woven fabric. The liquid composition contains the following components (A)-(C) and water.　(A) is a porous silica having an oil absorption of 250 mL / 100 g or more, (B) is at least one among (B1) a plate-shaped powder and (B2) a spherical powder other than the component (A), and (C) is at least one or two selected from among (C1) a modified silicone and (C2) a nonionic surfactant other than the modified silicone.

Description

Sheet-type cosmetics

[0001] The present invention relates to a sheet-type cosmetic material in which a sheet is impregnated with a liquid composition.

[0002] Sheet-type cosmetics have a configuration in which a sheet is impregnated with a liquid composition containing cosmetic ingredients, and are used to wipe away sweat, sebum, etc. In recent years, there has been an increasing demand for sheet-type cosmetics to be used over a wider range, such as the chest and back, in addition to areas such as the neck and arms, and this has created a need to increase the amount of liquid composition impregnated into the sheet.

[0003] In addition to the feel when using a sheet-type cosmetic (when wiping off), users also tend to place importance on the feel after using the sheet-type cosmetic (when sweat starts to appear after wiping off), and in particular, they want the dry feeling of skin after sweating to quickly return to the dry feeling of skin when using the sheet-type cosmetic. For this reason, as in Patent Documents 1 and 2, sheet-type cosmetics have been developed in which powder such as porous silica is added to a liquid composition, and sweat and sebum are adsorbed by the powder.

[0004] JP 2006-151829 A JP 2007-176813 A

[0005] A sheet-type cosmetic according to one embodiment of the present invention is a sheet-type cosmetic impregnated with a liquid composition, and comprises a sheet and the liquid composition. The sheet is one or more types selected from woven fabric and nonwoven fabric. The liquid composition contains the following components (A) to (C) and water: (A) porous silica having an oil absorption of 250 mL / 100 g or more; (B) at least one of (B1) plate-like powder and (B2) spherical powder other than component (A); and (C) one or more types selected from (C1) modified silicone and (C2) nonionic surfactant other than modified silicone.

[0006] A package according to one embodiment of the present invention contains a sheet-type cosmetic, in which the sheet is impregnated with a liquid composition, within a packaging material. The sheet-type cosmetic comprises a sheet and the liquid composition. The sheet is one or more types selected from woven fabric and nonwoven fabric. The liquid composition contains the following components (A) to (C) and water: (A) porous silica having an oil absorption of 250 mL / 100 g or more; (B) at least one of (B1) plate-like powder and (B2) spherical powder other than component (A); and (C) one or more types selected from (C1) modified silicone and (C2) nonionic surfactant other than modified silicone.

[0007] 1 is a schematic diagram showing non-liquid components contained in a sheet-type cosmetic according to an embodiment of the present invention and transferred onto the skin; FIG. 2 is a schematic diagram showing the non-liquid components when sweating occurs; and FIG. 3 is a schematic diagram showing a package in which the sheet-type cosmetic according to an embodiment of the present invention is packaged. Detailed Description of the Invention

[0008] However, there is a problem that the pleasant feeling of use and the pleasant feeling on the skin are deteriorated as perspiration occurs after application. Furthermore, when porous silica with high oil absorption is added to absorb sweat, the pleasant feeling of use is deteriorated.

[0009] To provide a sheet-type cosmetic which provides an excellent feeling when used and when sweating, and shortens the time it takes for the skin to feel restored to a non-sticky, smooth state immediately after using the sheet after sweating.

[0010] The following describes embodiments of the present invention. The present invention is not limited to the following embodiments, and various modifications can be made without departing from the spirit and scope of the present invention.

[0011] [Overall Structure of Sheet-Type Cosmetic] The sheet-type cosmetic according to this embodiment is a sheet preparation comprising a sheet and a liquid composition impregnated into the sheet, and used to wipe away sweat, sebum, and the like adhering to the skin. The term "impregnated" does not necessarily mean that the sheet is soaked in the liquid composition using a spray or nozzle, but also includes a state in which the liquid composition is impregnated into the sheet or a state in which the liquid composition is retained on the sheet. Furthermore, "liquid" refers to a state in which the liquid is in a liquid state at 25°C, e.g., a viscosity at 25°C of 20,000 mPa·s or less. Hereinafter, the "sheet according to this embodiment" will be simply referred to as "sheet," and the "liquid composition according to this embodiment" will be simply referred to as "liquid composition." The sheet is made of woven or nonwoven fabric and serves as a substrate for retaining the components of the liquid composition. The liquid composition contains component (A), component (B), component (C), and water.

[0012] Component (A) is porous silica with an oil absorption of 250 mL / 100 g or more. The porous silica of component (A) can be a spherical powder. Here, "spherical" includes true spheres, approximate spheres, and spheroids, and may also be spherical powders with an uneven surface. The porous silica of component (A) is, for example, mesoporous silica. When the liquid composition contains the porous silica of component (A), sweat components such as lactic acid and salt and sebum are adsorbed to the porous silica of component (A), suppressing stickiness of the skin after sweating, thereby maintaining a comfortable feel even after application of the sheet-type cosmetic. Furthermore, even after sweating, the skin quickly returns to the non-sticky, smooth state it had immediately after use. From the perspective of maintaining a comfortable feel when using the sheet-type cosmetic, the oil absorption of the porous silica of component (A) is preferably 250 mL / 100 g or more, and more preferably 300 mL / 100 g (see Examples). The oil absorption can be measured in accordance with the method described in JIS K 5101-13-2.

[0013] From the viewpoint of a good feel during and after use of the sheet-type cosmetic and after sweating, the porous silica of component (A) preferably includes one having a particle size of 20 μm or less, more preferably one having an average particle size of 0.5 μm or more and 20 μm or less, even more preferably one having an average particle size of 1 μm or more and 12 μm or less, even more preferably one having an average particle size of 3 μm or more and 8 μm or less, and even more preferably one having an average particle size of 3 μm or more and 5 μm or less. In this embodiment, the particle size of the porous silica of component (A) is the particle size measured in accordance with JIS Z 8832:2010 using a Coulter Counter Multisizer (manufactured by Beckman Coulter, Inc.), and the average particle size is the volume-based median diameter (D50) obtained by measurement. The same applies to each average particle size below. The content of porous silica in component (A) in the liquid composition is preferably 0.1% by mass or more and 5% by mass or less, more preferably 0.5% by mass or more and 4% by mass or less, even more preferably 1% by mass or more and 3% by mass or less, and even more preferably 1% by mass or more and 3% by mass or less, from the viewpoint of improving the feeling of use after use of the sheet-type cosmetic.

[0014] From another perspective, the content of porous silica of component (A) in the liquid composition is preferably 0.1% by mass or more and 5% by mass or less, more preferably 0.5% by mass or more and 5% by mass or less, even more preferably 1% by mass or more and 5% by mass or less, and even more preferably 1% by mass or more and 3% by mass or less, from the perspective of improving the feeling of use after use of the sheet-type cosmetic.

[0015] Specific examples of the porous silica of component (A) that can be used include Sunsphere (registered trademark) H-32 (manufactured by AGC Si-Tech Co., Ltd., average particle size: 3 μm, oil absorption: 300 mL / 100 g), Sunsphere (registered trademark) H-52 (manufactured by AGC Si-Tech Co., Ltd., average particle size: 5 μm, oil absorption: 300 mL / 100 g), or H-122 (manufactured by AGC Si-Tech Co., Ltd., average particle size: 12 μm, oil absorption: 300 mL / 100 g), Sunsphere (registered trademark) H-33 (manufactured by AGC Si-Tech Co., Ltd., average particle size: 3 μm, oil absorption: 400 mL / 100 g), and Sunsphere (registered trademark) H-53 (manufactured by AGC Si-Tech Co., Ltd., average particle size: 5 μm, oil absorption: 400 mL / 100 g).

[0016] Component (B) is at least one of component (B1) and component (B2). Component (B1) is a plate-like powder, and component (B2) is a spherical powder other than component (A). The plate-like powder of component (B1) is, for example, talc, but other plate-like powders may also be used. The plate-like powder of component (B1) preferably has a volume median particle size (D50) of 5.0 μm or more and 20 μm or less, and an aspect ratio (D50 (μm) / average thickness of the powder (μm)) of 6.0 or more and 15.0 or less. The content of component (B1) in the liquid composition is preferably 0.1% by mass or more and 5% by mass or less, more preferably 1% by mass or more and 3% by mass or less, from the viewpoint of improving the feel of use when using the sheet-type cosmetic. Talc can be used as the plate-like powder (B1), and specifically JA-68R (manufactured by Asada Flour Milling Co., Ltd.) can be used.

[0017] The spherical powder (B2) other than the component (A) is, for example, porous silica having an oil absorption of less than 250 mL / 100 g. Hereinafter, this porous silica will be referred to as the porous silica of the component (B2). Note that the spherical powder (B2) other than the component (A) is not limited to porous silica, and may be a spherical powder other than the component (A).

[0018] From the viewpoint of improving the feel when using the sheet-type cosmetic, the average particle size of the porous silica of component (B2) is preferably 0.5 μm or more and 20 μm or less, more preferably 1 μm or more and 15 μm or less, even more preferably 3 μm or more and 12 μm or less, and even more preferably 5 μm or more and 12 μm or less. From the viewpoint of improving the feel when using the sheet-type cosmetic, the oil absorption of the porous silica of component (B2) is preferably less than 250 mL / 100 g, and particularly preferably 150 mL / 100 g or less. From the viewpoint of improving the feel when using the sheet-type cosmetic, the content of component (B2) in the liquid composition is preferably 0.1% by mass or more and 10% by mass or less, more preferably 0.5% by mass or more and 7% by mass or less, and even more preferably 1% by mass or more and 4% by mass or less.

[0019] Porous silica can be used as the spherical powder (B2) other than component (A), and specific examples thereof include Sunsphere (registered trademark) H-51 (manufactured by AGC Si-Tech Co., Ltd., average particle size: 5 μm, oil absorption: 150 mL / 100 g), Sunsphere (registered trademark) H-121 (manufactured by AGC Si-Tech Co., Ltd., average particle size: 12 μm, oil absorption: 150 mL / 100 g), Sunsphere (registered trademark) H-31 (manufactured by AGC Si-Tech Co., Ltd., average particle size: 3 μm, oil absorption: 150 mL / 100 g), SILICA MICROBEAD P-500 (manufactured by JGC Catalysts and Chemicals Co., Ltd., average particle size: 2 μm, oil absorption: 60 mL / 100 g), and SILICA MICROBEAD Examples of suitable silica microbeads include L-1500 (manufactured by JGC Catalysts and Chemicals, average particle size: 11 μm, oil absorption: 120 mL / 100 g) and SILICA MICROBEAD P-4000 (manufactured by JGC Catalysts and Chemicals, average particle size: 30 μm, oil absorption: 60 mL / 100 g).

[0020] When component (B) is a plate-like powder (B1), the plate-like powder reduces the unevenness of the skin surface, reducing friction between component (A) and the skin and suppressing the squeaky feeling caused by component (A), thereby increasing the smooth feeling of the skin. When component (B) is a spherical powder (B2) other than component (A), blending a spherical powder with a lower oil absorption rate than component (A) reduces the frequency of component (A) powder particles getting caught on each other, reducing the squeaky feeling of the skin. When component (B) contains both a plate-like powder (B1) and a spherical powder (B2) other than component (A), both of the above-mentioned effects are achieved. Therefore, when the liquid composition contains component (B), the feel when using the sheet-type cosmetic is improved. In particular, from the viewpoint of suppressing stickiness during sweating, it is more preferable that the liquid composition contains component (B2).

[0021] From the viewpoint of the feeling when used, the mass ratio of component (A) to component (B) in the liquid composition, component (A) / component (B), is preferably 0.12 or more and 8 or less, more preferably 0.2 or more and 3 or less, and even more preferably 0.4 or more and 1 or less.

[0022] From another viewpoint, from the viewpoint of the feeling when used, the mass ratio of component (A) to component (B) in the liquid composition, component (A) / component (B), is preferably 0.12 or more and 8 or less, more preferably 0.2 or more and 2 or less, and even more preferably 0.25 or more and 0.5 or less.

[0023] Component (C) is one or more selected from component (C1) and component (C2). Component (C1) is a modified silicone, and component (C2) is a nonionic surfactant other than a modified silicone. Component (C) has hydrophilic groups that bond to OH groups of the porous silica through hydrogen bonds, thereby adhering to the porous silica of components (A) and (B).

[0024] From the viewpoint of improving the feel of the product, the modified silicone of component (C1) includes at least one selected from polyether-modified silicone, polyglycerin-modified silicone, branched polyglycerol-modified silicone, oxazoline-modified silicone, and alkyl glyceryl ether-modified silicone, and preferably includes at least one type of polyether-modified silicone or oxazoline-modified silicone.

[0025] Polyether-modified silicones have a structure in which the hydrocarbon groups on the side chains and / or ends of silicone oil are substituted with polyether groups. The polyether groups in polyether-modified silicones are preferably polyethyleneoxy groups, polypropyleneoxy groups, or polyalkyleneoxy groups in which ethyleneoxy groups (EO) and propyleneoxy groups (trimethyleneoxy groups or propane-1,2-diyloxy groups; PO) are added in a block or random manner, with polyethyleneoxy groups being more preferred. Examples of polyether-modified silicones that can be used include compounds in which polyether groups are grafted onto a silicone main chain, and compounds in which silicone and polyether groups are bonded in a block manner.

[0026] Examples of polyether-modified silicones include PEG-10 dimethicone (polyoxyethylene-methylpolysiloxane copolymer), PEG / PPG-20 / 22 butyl ether dimethicone (poly(oxyethylene-oxypropylene)methylpolysiloxane copolymer), and PEG-11 methyl ether dimethicone (polyoxyethylene-methylpolysiloxane copolymer).

[0027] Commercially available examples of polyether-modified silicones include the KF series (e.g., KF-6004, KF-6011, KF-6012, KF-6013, KF-6015, KF-6016, KF-6017, KF-6028, KF-6038, KF-6043, KF-6048) manufactured by Shin-Etsu Chemical Co., Ltd., and the DOWSIL series (BY25-339, SH3775M, FZ-2203) manufactured by Dow Chemical Japan Ltd.

[0028] Oxazoline-modified silicone is a polymer whose constituent units are hydrophilic segments having N-acylalkyleneimine repeating units and organopolysiloxane segments. In the oxazoline-modified silicone, the mass ratio of the organopolysiloxane segments to the hydrophilic segments having N-acylalkyleneimine repeating units (organopolysiloxane segment a / hydrophilic segment b having N-acylalkyleneimine repeating units) is, from the viewpoint of improving the usability, for example, a / b=45 / 55 or more, preferably 65 / 35 or more, and more preferably 85 / 15 or more, and for example, 99 / 1 or less, preferably 98 / 2 or less.

[0029] In this specification, the above mass ratio refers to a value determined by dissolving the organopolysiloxane of the present invention in heavy chloroform at 5% by mass and subjecting it to nuclear magnetic resonance (H-NMR) analysis to determine the integral ratio of alkyl groups or phenyl groups in the organopolysiloxane segment to methylene groups in the poly(N-acylalkyleneimine) segment.

[0030] In the oxazoline-modified silicone, the weight average molecular weight of the organopolysiloxane segment is, for example, 1 × 10４ or more, preferably 2×10 ４ More preferably, 3.5 × 10 ４ or more, for example, 3×10 ５ or less, preferably 2 × 10 ５ More preferably, 1.5 × 10 ５ The following is the result.

[0031] The organopolysiloxane constituting the main chain has a common skeleton with the modified organopolysiloxane that is the raw material compound, and therefore the weight average molecular weight of the organopolysiloxane constituting the main chain is approximately the same as the average molecular weight of the modified organopolysiloxane.

[0032] Here, the weight-average molecular weight of the modified organopolysiloxane is a weight-average molecular weight in terms of polystyrene measured by gel permeation chromatography (GPC) under the following conditions: Column: Super HZ4000 + Super HZ2000 (manufactured by Tosoh Corporation) Eluent: 1 mM triethylamine / THF Flow rate: 0.35 mL / min Column temperature: 40°C Detector: UV detector Sample: 50 μL

[0033] In the oxazoline-modified silicone, the number average molecular weight of the poly(N-acylalkyleneimine) segment is, for example, 5×10 ２ or more, preferably 7×10 ２ More preferably, 8 × 10 ２ or more, for example, 4×10 ３ or less, preferably 3.5 × 10 ３ More preferably, 3 × 10 ３ The following is the result.

[0034] The number average molecular weight of the poly(N-acylalkyleneimine) segment can be measured by a method of calculation from the molecular weight and degree of polymerization of the N-acylalkyleneimine unit or by the above-mentioned GPC measurement method, but in the present embodiment, it refers to the number average molecular weight measured by the GPC measurement method.

[0035] A specific example of the oxazoline-modified silicone polymer is represented by the following general formula (1).

[0036]

[0037] In the general formula (1), n ​​represents a number from 1 to 5, and R ９ represents a hydrogen atom or an alkyl group having 1 to 5 carbon atoms, m is the degree of polymerization of the monomer and is a number from 1 to 1000, r is an average of 10 to 2000, p is an average of 0 to 20, q is an average of 1 to 20, and X － represents a counter ion of the quaternary ammonium ion, and represents an ethyl sulfate ion, methyl sulfate ion, chloride ion, iodide ion, sulfate ion, p-toluenesulfonate ion, or perchlorate ion. A polymerization initiator residue is bonded to the N-terminus of the repeating unit of the N-acylalkyleneimine.) Examples of polymerization initiators that can be used include diethyl sulfate, dimethyl sulfate, hydrochloric acid, hydrogen iodide, sulfuric acid, p-toluenesulfonic acid, and perchloric acid, and these residues are bonded to the N-terminus after polymerization.

[0038] As the oxazoline-modified silicone polymer, N-propionyl polyethyleneimine-methylpolysiloxane copolymer (POLYSILICONE-9) is preferred. As POLYSILICONE-9, for example, the one described in JP-A-2009-256367 can be used.

[0039] The content of component (C1) in the liquid composition is preferably 0.03% by mass or more and 0.8% by mass or less, more preferably 0.05% by mass or more and 0.5% by mass or less, and even more preferably 0.1% by mass or more and 0.3% by mass or less, from the viewpoint of improving the feeling of use during and after use of the sheet-type cosmetic.

[0040] From another perspective, the content of component (C1) in the liquid composition is preferably 0.03% by mass or more and 0.8% by mass or less, more preferably 0.05% by mass or more and 0.5% by mass or less, even more preferably 0.05% by mass or more and 0.2% by mass or less, and even more preferably 0.1% by mass or more and 0.2% by mass or less, from the standpoint of improving the sensation of use during and after use of the sheet-type cosmetic.

[0041] Examples of the nonionic surfactant of component (C2) include polyoxyalkylene alkyl ethers, polyoxyalkylene alkenyl ethers, polyoxyalkylene sorbitan fatty acid esters, polyoxyalkylene fatty acid esters, alkyl glucosides, alkyl alkanolamides, alkyl glyceryl ethers, higher fatty acid sucrose esters, polyglycerin fatty acid esters, polyoxyalkylene hydrogenated castor oil, alkyl saccharides, etc., and one or more of these can be used. Among the above, one or more selected from the group consisting of polyoxyalkylene alkyl ethers, alkyl glyceryl ethers, and polyoxyalkylene hydrogenated castor oil are preferred.

[0042] Specific examples of polyoxyalkylene alkyl ethers include "Emulgen 106," "Emulgen 108," and "Kao Sofcare GP-1," both manufactured by Kao Corporation. Specific examples of alkyl glyceryl ethers include "Penetol GE-ID" and "Penetol GE-IS," both manufactured by Kao Corporation. Specific examples of polyoxyalkylene hydrogenated castor oils include "Emanon CH-60K," both manufactured by Kao Corporation.

[0043] Component (C) is preferably at least one of a modified silicone (C1) and a nonionic surfactant other than a modified silicone (C2), and modified silicone (C1) is particularly preferred. When the liquid composition contains component (C), component (C) acts as a cushion for the porous silica of components (A) and (B), improving the feel when using the sheet-form cosmetic.

[0044] From the viewpoint of improving the feel during and after use of the sheet-type cosmetic, the nonionic surfactant of component (C2) preferably has an HLB (Hydrophile Lipophile Balance) value of 1 to 15, and more preferably 2 to 12.1. From the viewpoint of improving the feel during and after use of the sheet-type cosmetic, the content of component (C2) in the liquid composition is preferably 0.1% by mass to 0.5% by mass, more preferably 0.1% by mass to 0.3% by mass, and even more preferably 0.1% by mass to 0.2% by mass.

[0045] The liquid composition further contains water. The content of water in the liquid composition can be the remainder after excluding components other than water from the liquid composition. From the viewpoint of improving the liquid retention ability of the sheet-type cosmetic and suppressing irritation to the skin, the content of water in the liquid composition is preferably 45% by mass or more and 98% by mass or less, more preferably 55% by mass or more and 75% by mass or less, and even more preferably 60% by mass or more and 75% by mass or less.

[0046] When the sheet-type cosmetic according to the embodiment is wiped onto the skin, the liquid composition is transferred to the skin. The liquid components of the liquid composition evaporate quickly, leaving the non-liquid components and the liquid components held by the non-liquid components on the skin. Figure 1 is a schematic diagram showing the non-liquid components on skin 50. As shown in the figure, the non-liquid components porous silica 11 of component (A), porous silica 12 of component (B2), and talc 13 of component (B1) are adhered to skin 50, and are coated with modified silicone 14 of component (C1).

[0047] 2 is a schematic diagram showing the state of non-liquid components when sweating occurs. As shown in the figure, when sweat 51 and sebum 52 are secreted onto skin 50, modified silicone 14 of component (C1) absorbs sweat 51, while porous silica 11 of component (A) and porous silica 12 of component (B2) adsorb sebum 52 and sweat components 53. Sweat components 53 are sodium chloride (NaCl) and lactic acid.

[0048] The porous silica of component (A) is superior to the porous silica of component (B2) and the talc of component (B1) in sebum adsorption and lactic acid adsorption. Furthermore, the porous silica of component (A) suppresses the adverse effects of sweat (NaCl) and allows sweat to evaporate quickly.

[0049] Therefore, the presence of porous silica 11 of component (A) and porous silica 12 of component (B2) on skin 50 allows sweat 51 and sebum 52 to be quickly removed from skin 50. As a result, stickiness of skin 50 after sweating is suppressed, and a dry feeling is quickly restored, making it possible to achieve a highly dry feeling.

[0050] Furthermore, adhesion of talc 13 of component (B1) to skin 50 reduces unevenness of skin 50 and improves the smooth feeling of skin 50. Furthermore, the presence of porous silica 11 of component (A) and porous silica 12 of component (B2), which have different oil absorption amounts, on skin 50 reduces the frequency of the powder particles of component (A) getting caught on each other, reducing the squeaky feeling of skin 50.

[0051] Furthermore, as shown in Figure 1, the porous silica 11 of component (A), the porous silica 12 of component (B2), and the talc 13 of component (B1) are coated with the modified silicone 14 of component (C1). The porous silica and talc coated with the modified silicone have a reduced coefficient of dynamic friction and improved slipperiness. Therefore, it is possible to impart a very smooth feeling to the skin 50.

[0052] As described above, the sheet-type cosmetic according to this embodiment can provide an excellent feeling during use and after perspiration. As described above, the liquid composition may contain only one of the talc 13 and the porous silica 12, or may contain another plate-like powder instead of the talc 13, or another spherical powder instead of the porous silica 12. The liquid composition may also contain another nonionic surfactant instead of the modified silicone 14.

[0053] The liquid composition may further contain component (D). Component (D) is an oil that is liquid at 20°C. The oil of component (D) is preferably one or more selected from ester oils, hydrocarbon oils, and silicone oils, and preferably contains silicone oil. When the liquid composition contains silicone oil as component (D), the feel during use of the sheet-type cosmetic and after sweating is improved. From the perspective of improving the feel during use of the sheet-type cosmetic and after use, the content of component (D) in the liquid composition is preferably 0.1% by mass or more and 4% by mass or less, more preferably 0.3% by mass or more and 2.5% by mass or less, and even more preferably 0.5% by mass or more and 2.0% by mass or less.

[0054] Examples of silicone oils for component (D) include dimethicone (methylpolysiloxane). Specific examples of component (D) that can be used include KF-96A-10CS (manufactured by Shin-Etsu Chemical Co., Ltd., dimethicone), KF-96A-6CS (manufactured by Shin-Etsu Chemical Co., Ltd., dimethicone), and KM-910 (manufactured by Shin-Etsu Chemical Co., Ltd., highly polymerized methylpolysiloxane emulsion).

[0055] Furthermore, the liquid composition may contain other components as needed, such as anionic polymers, cationic compounds, ethanol, preservatives, pH adjusters, moisturizers, anti-inflammatory agents, whitening agents, UV absorbers, disinfectants, antiperspirants, cooling agents, chelating agents, fragrances, and colorants.

[0056] The anionic polymer can suppress the settling of silica, which exists as heavy secondary particles, due to a thickening effect caused by electrostatic repulsion when the liquid composition is present alone before being impregnated into a sheet during the manufacturing process. This allows the liquid composition to be impregnated into the sheet in a state in which the silica particles are more uniformly dispersed when the liquid composition is impregnated into the sheet, making it easier to obtain a sheet-type cosmetic preparation in which the silica particles are well dispersed. From the viewpoint of suppressing powder settling, the content of the anionic polymer in the liquid composition, if present, can be, for example, from 0.005% by mass to 0.3% by mass, more preferably from 0.01% by mass to 0.1% by mass, and even more preferably from 0.02% by mass to 0.06% by mass.

[0057] Specific examples of anionic polymers include carboxymethylcellulose, carrageenan, xanthan gum, polystyrene sulfonate, agar, ghatti gum, karaya gum, pectin, alginate salts, (co)polymers of (meth)acrylic acid or its derivatives, and hyaluronic acid or its alkali metal salts.

[0058] Among these, examples of (co)polymers of (meth)acrylic acid or derivatives thereof include polyacrylic acid, sodium polyacrylate, crosslinked polyacrylic acid, crosslinked sodium polyacrylate, acrylic acid-alkyl methacrylate copolymer, carboxyvinyl polymer (carbomer), alkyl-modified carboxyvinyl polymer, copolymers and crosspolymers containing acryloyldimethyltaurine or a salt thereof as a monomer component, specifically (sodium acrylate / sodium acryloyldimethyltaurine) copolymer, (hydroxyethyl acrylate / sodium acryloyldimethyltaurine) copolymer, (sodium acrylate / acryloyldimethyltaurine / dimethylacrylamide) crosspolymer, (acrylamide / ammonium acrylate) copolymer, polyacrylate-13, polyacrylate crosspolymer-6, and the like, with acrylic acid-alkyl methacrylate copolymer being preferred.

[0059] Specific examples of acrylic acid / alkyl methacrylate copolymers include "AQUPEC HV-501ER" (manufactured by Sumitomo Seika Chemicals), "Carbopol 1342", "Carbopol 1382", "Carbopol ETD2020", "Carbopol Ultrez 20", "Carbopol Ultrez 21", "Pemulen TR-1", and "Pemulen TR-2" (all manufactured by Lubrizol Advanced Materials).

[0060] Examples of cationic compounds include cationic polymers and cationic surfactants. Examples of cationic polymers include dialkyldiallylammonium salt-acrylamide copolymers, vinylimidazolium trichloride-vinylpyrrolidone copolymers, hydroxyethyl cellulose-dimethyldiallylammonium chloride copolymers, vinylpyrrolidone-quaternized dimethylaminoethyl methacrylate copolymers, polyvinylpyrrolidone-alkylaminoacrylate copolymers, polyvinylpyrrolidone-alkylaminoacrylate-vinylcaprolactam copolymers, vinylpyrrolidone-methacrylamidopropyl trimethylammonium chloride copolymers, alkylacrylamide-acrylate-alkylaminoalkylacrylamide-polyethylene glycol methacrylate copolymers, etc. Examples of cationic surfactants include benzalkonium chloride and dialkyldimethylammonium chloride.

[0061] Among cationic compounds, cationic polymers are likely to cause "stickiness" or "stickiness" on the skin to which the liquid composition has been transferred. Furthermore, when the liquid composition is present alone before being impregnated into a sheet, the cationic compound tends to counteract the thickening effect caused by electrostatic repulsion by the anionic polymer. Therefore, the content of the cationic compound in the liquid composition is preferably 0% by mass when an anionic polymer is included. However, when a cationic compound is included, the mass ratio of cationic compound / anionic polymer is preferably less than 0.1, more preferably less than 0.01, and even more preferably less than 0.005. Furthermore, when the liquid composition does not contain an anionic polymer, the content of the cationic compound in the liquid composition is preferably 0.0005% by mass or more but less than 0.1% by mass.

[0062] The ethanol content in the liquid composition is preferably 0% by mass or more and 50% by mass or less, more preferably 15% by mass or more and 40% by mass or less, and even more preferably 20% by mass or more and 30% by mass or less.

[0063] [Package] A package in which the sheet-type cosmetic according to this embodiment is packaged will be described. Fig. 3 is a schematic diagram of this package 100. As shown in the figure, the package 100 has a plurality of sheet-type cosmetics 10 and a packaging material 20. In the package 100, the sheet-type cosmetics 10 according to this embodiment are contained within the packaging material 20 in a layered state in which they are directly stacked one on top of the other.

[0064] The packaging material 20 has an opening 20a at a position facing the sheet-type cosmetic in the stacking direction. A sealing body S that covers the opening 20a is attached to the packaging material 20. In the packaging body 100, the sheet-type cosmetic 10 can be taken out one by one by peeling at least a portion of the sealing body S from the packaging material 20 to open the opening 20a.

[0065] [Detailed Structure of the Sheet] The sheet is a sheet material or sheet layer formed from fibers, and is at least one type selected from woven fabric and nonwoven fabric. That is, the sheet may be a single layer of woven fabric and / or nonwoven fabric, or may be a laminate of a layer of woven fabric and / or nonwoven fabric and a layer of another material. Examples of fibers or materials constituting the sheet X include cellulose or natural fibers such as cotton and pulp, processed fibers from natural sources such as lyocell, cupra, rayon, and acetate, acrylic resins such as polymethacrylate and polyacrylonitrile, polyesters such as polyethylene terephthalate (PET), polyethylene (PE), polypropylene (PP), polyurethane, and polyamides such as nylon, and may be blends of two or more of these.

[0066] From the viewpoint of improving the balance between the liquid composition retention and transferability of the liquid composition to the skin, the sheet preferably contains one or more materials selected from the group consisting of cotton, rayon, pulp, PE, PP, and PET. The sheet may be a single layer or a multi-layer laminate. In this case, each layer may be made of the same material or different materials. The sheet may also be embossed or bonded by heat sealing.

[0067] The sheet has an average basis weight of 20 g / m² from the viewpoint of maintaining the liquid composition and providing a good feel when wiping. ２ 150g / m or more ２ The following is preferred: ２ More than 100g / m ２ More preferably, 40 g / m ２ 80g / m or more ２ The average basis weight is determined in accordance with JIS L 1913 by cutting a sheet into a certain area, measuring the mass of the cut sheet, and dividing the mass by 1 m ２ This can be calculated by converting it into mass.

[0068] The thickness of the sheet is preferably 0.15 mm or more and 1.30 mm or less, and more preferably 0.30 mm or more and 0.90 mm or less, from the viewpoint of maintaining the liquid composition and providing a good feel when wiping. ２ The load can be measured using a dial gauge. The shape and size of the sheet are preferably such that it is easy to wipe the skin of the face, etc., and can be, for example, a rectangle with one side of 3 cm to 30 cm.

[0069] Although the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, and it goes without saying that various modifications can be made within the scope of the gist of the present invention.

[0070] Sheet-type cosmetics according to examples and comparative examples of the present invention were prepared, and the sensation of use was evaluated. Tables 1 to 5 show the compositions of the liquid compositions that make up the sheet-type cosmetics according to the examples and comparative examples. The values ​​shown in Tables 1 to 5 are the contents in the liquid compositions, and are expressed in mass%.

[0071]

[0072]

[0073]

[0074]

[0075]

[0076] Details of each component in Tables 1 to 5 are shown below. *1) Porous silica Sunsphere (registered trademark) H-32 (manufactured by AGC Si-Tech Co., Ltd., average particle size: 3 μm, oil absorption: 300 mL / 100 g) *2) Porous silica Sunsphere (registered trademark) H-52 (manufactured by AGC Si-Tech Co., Ltd., average particle size: 5 μm, oil absorption: 300 mL / 100 g) *3) Porous silica Sunsphere (registered trademark) H-51 (manufactured by AGC Si-Tech Co., Ltd., average particle size: 5 μm, oil absorption: 150 mL / 100 g) *4) Porous silica Sunsphere (registered trademark) H-121 (manufactured by AGC Si-Tech Co., Ltd., average particle size: 12 μm, oil absorption: 150 mL / 100 g) *5) Talc JA-68R (manufactured by Asada Flour Milling Co., Ltd.) *6) Polyoxyethylene-methylpolysiloxane copolymer KF-6017 (Shin-Etsu Chemical Co., Ltd., PEG-10 dimethicone, HLB: 4.5), *7) N-propionyl polyethyleneimine-methylpolysiloxane copolymer liquid (30%) (oxazoline-modified silicone) *8) Polyoxyethylene lauryl ether (6E.O.) Emulgen (registered trademark) 108 (Kao Corporation, HLB: 12.1), *9) Isostearyl glyceryl ether Penetol (registered trademark) GE-IS (Kao Corporation, HLB: 2.0) *10) Methylpolysiloxane KF-96A-10CS (Shin-Etsu Chemical Co., Ltd.) *11) Methylpolysiloxane KF-96A-6CS (Shin-Etsu Chemical Co., Ltd.) *12) Highly polymerized methylpolysiloxane emulsion KM-910 (Shin-Etsu Chemical Co., Ltd.) *13) Acrylic acid-alkyl methacrylate copolymer Pemulen TR-1 (manufactured by Lubrizol Advanced Materials) *14) Potassium hydroxide solution (A) 48 caustic potash (KOH 0.75 / water 25) *15) Ethanol (concentration 95%) *16) Phenoxyethanol Hisorb EPH (manufactured by Toho Chemical Industry Co., Ltd.) *17) Methyl parahydroxybenzoate Mekxance M (manufactured by Toho Chemical Industry Co., Ltd.) *18) Porous silica Sunsphere (registered trademark) H-31 (manufactured by AGC Si-Tech Co., Ltd., average particle size: 3 μm, oil absorption: 150 mL / 100 g)

[0077] For each Example and Comparative Example, a sheet-type cosmetic was prepared by incorporating a liquid composition shown in Tables 1 to 4 into a sheet. In each Example and Comparative Example, the sheet was a nonwoven fabric made of a blend of rayon (80% by mass), polypropylene (9% by mass), and polyethylene (11% by mass), and had a basis weight of 50.0 g / m ２ In each example and comparative example, the impregnation rate of the liquid composition with respect to the sheet was set to 350%.

[0078] Component (A) is porous silica with an oil absorption of 250 mL / 100 g or more, and Sunsphere (registered trademark) H-32 (manufactured by AGC Si-Tech Co., Ltd., average particle size: 3 μm, oil absorption: 300 mL / 100 g) and Sunsphere (registered trademark) H-52 (manufactured by AGC Si-Tech Co., Ltd., average particle size: 5 μm, oil absorption: 300 mL / 100 g) were used.

[0079] Component (B) is at least one of a plate-like powder (B1) and a spherical powder (B2) other than component (A). As the spherical powder (B2) other than component (A), Sunsphere (registered trademark) H-51 (manufactured by AGC Si-Tech Co., Ltd., average particle size: 5 μm, oil absorption: 150 mL / 100 g), Sunsphere (registered trademark) H-121 (manufactured by AGC Si-Tech Co., Ltd., average particle size: 12 μm, oil absorption: 150 mL / 100 g), and Sunsphere (registered trademark) H-31 (manufactured by AGC Si-Tech Co., Ltd., average particle size: 3 μm, oil absorption: 150 mL / 100 g) were used. Furthermore, talc JA-68R (manufactured by Asada Flour Milling Co., Ltd.) was used as the plate-like powder (B1).

[0080] Component (C) is one or more selected from modified silicones (C1) and nonionic surfactants other than modified silicones (C2). KF-6017 (manufactured by Shin-Etsu Chemical Co., Ltd., PEG-10 dimethicone, HLB: 4) and oxazoline-modified silicone were used as modified silicones (C1). Emulgen (registered trademark) 108 (manufactured by Kao Corporation, polyoxyethylene lauryl ether, HLB: 12.1) and Penetol (registered trademark) GE-IS (manufactured by Kao Corporation, isostearyl glyceryl ether, HLB: 2.0) were used as nonionic surfactants other than modified silicones (C2).

[0081] Component (D) is a silicone oil, and KF-96A-10CS (manufactured by Shin-Etsu Chemical Co., Ltd., dimethicone), KF-96A-6CS (manufactured by Shin-Etsu Chemical Co., Ltd., dimethicone), and KM910 (manufactured by Shin-Etsu Chemical Co., Ltd., highly polymerized methylpolysiloxane emulsion) were used.

[0082] Other components used included Pemulen TR-1 (acrylic acid / alkyl methacrylate copolymer, manufactured by Lubrizol Advanced Materials), 48 caustic potassium (48% aqueous potassium hydroxide solution), ethanol (concentration 95%), Hisorb EPH (phenoxyethanol, manufactured by Toho Chemical Industry Co., Ltd.), and Mekxance M (methyl parahydroxybenzoate, manufactured by Toho Chemical Industry Co., Ltd.).

[0083] The skin was wiped with the sheet-type cosmetics according to the Examples and Comparative Examples, and the testers evaluated "smooth feeling of skin after use," "smooth feeling of skin after use," "non-greasy feeling of skin after use," and "non-powdery feeling of skin after use" based on their tactile sensation. The "smooth feeling of skin after use" was rated as either "very smooth: 5," "smooth: 4," "slightly smooth: 3," "can't say either: 2," or "not smooth: 1." The "smooth feeling of skin after use" was rated as either "very smooth: 5," "smooth: 4," "slightly smooth: 3," "can't say either: 2," or "not smooth: 1." The "non-greasy feeling of skin after use" was rated as either "not at all greasy: 5," "not greasy: 4," "slightly smooth: 3," "can't say either: 2," or "greasy: 1." "Skin does not feel powdery after use" was judged as "not powdery: 5", "slightly powdery: 4", "can't say either way: 3", "slightly powdery: 2", or "powdery: 1".

[0084] Furthermore, after wiping the skin with the sheet-type cosmetic, artificial sweat was applied, and the testers evaluated "the feeling that the skin did not feel sticky when sweating" and "the time until the skin felt like it had returned to its post-use condition" by touch. The "feeling that the skin did not feel sticky when sweating" was rated as "not sticky: 5," "not very sticky: 4," "can't say either way: 3," "sticky: 2," or "very sticky: 1." The "time until the skin felt like it had returned to its post-use condition" was rated as "55 seconds or less: 5," "55 seconds or more but less than 65 seconds: 4," "65 seconds or more but less than 75 seconds: 3," "75 seconds or more but less than 85 seconds: 2," or "85 seconds or more: 1." The artificial sweat was prepared by dissolving 2.5% by mass of sodium chloride and 0.2% by mass of lactic acid as sweat components in purified water. Assuming that sweat would accumulate, these concentrations were five times higher than those of normal sweat.

[0085] Examples 1 to 19 show that sheet-type cosmetics containing liquid compositions containing components (A), (B), and (C) are excellent in all of the following: "smooth skin feeling after use," "smooth skin feeling after use," "non-greasy skin feeling after use," "non-powdery skin feeling after use," "non-sticky skin feeling when sweating," and "time until skin feels restored to its original condition after use." On the other hand, Comparative Examples 3 (containing no component (A)), 1 (containing no component (B)), and 2 (containing no component (C)) show that when the liquid composition does not contain any of components (A), (B), and (C), one or more of these evaluation results are not excellent. Therefore, when the liquid composition contains components (A), (B), and (C), it can be said that the sheet-type cosmetics are excellent in feel during use and after sweating.

[0086] Regarding component (C), it can be seen from Example 5 that when component (C) is only a nonionic surfactant (C2) other than modified silicone, the "skin feels smooth after use," "skin does not feel powdery after use," and "skin does not feel sticky when sweating" are reduced. Therefore, it can be said that a component (C) containing modified silicone (C1) is preferable.

[0087] 10... Sheet-shaped cosmetic material 11... Porous silica 12... Porous silica 13... Talc 14... Modified silicone

[0088] According to the present invention, it is possible to provide a sheet-type cosmetic that suppresses the deterioration of the feeling of use due to porous silica with high oil absorption, provides an excellent feeling of use during and after use of the sheet, and shortens the time it takes for the skin to feel restored to the non-sticky, smooth state it had immediately after use of the sheet after sweating.

Claims

1. A sheet-type cosmetic impregnated with a liquid composition, comprising one or more sheets selected from woven fabric and nonwoven fabric, and a liquid composition containing the following components (A) to (C) and water: (A) Porous silica having an oil absorption of 250 mL / 100 g or more; (B) At least one of (B1) plate-like powder and (B2) spherical powder other than component (A); (C) One or more surfactants selected from (C1) modified silicone and (C2) nonionic surfactants other than modified silicone.

2. The sheet-form cosmetic preparation according to claim 1, wherein the porous silica of component (A) includes porous silica having a particle diameter of 20 μm or less.

3. The sheet-form cosmetic preparation according to claim 2, wherein the content of said component (A) in said liquid composition is 0.1% by mass or more and 5% by mass or less.

4. The sheet-form cosmetic preparation according to any one of claims 1 to 3, wherein the spherical powder other than component (A), which is component (B2), is porous silica having an oil absorption of less than 250 mL / 100 g and an average particle size of 0.5 μm or more and 20 μm or less.

5. The sheet-form cosmetic preparation according to claim 4, wherein the content of said component (B2) in said liquid composition is from 0.1% by mass to 10% by mass.

6. The sheet-form cosmetic preparation according to any one of claims 1 to 3, wherein the platy powder of component (B1) is talc.

7. The sheet-form cosmetic preparation according to claim 6, wherein the content of said component (B1) in said liquid composition is 0.1% by mass or more and 5% by mass or less.

8. A sheet-form cosmetic material according to any one of claims 1 to 7, wherein the modified silicone which is component (C1) is one or more types selected from polyether-modified silicones and oxazoline-modified silicones.

9. The sheet-form cosmetic preparation according to claim 8, wherein the content of said component (C1) in said liquid composition is 0.03% by mass or more and 0.8% by mass or less.

10. A sheet-form cosmetic preparation according to any one of claims 1 to 7, wherein the nonionic surfactant which is component (C2) has an HLB (hydrophile lipophile balance) value of 1 or more and 15 or less.

11. The sheet-form cosmetic preparation according to claim 10, wherein the content of said component (C2) in said liquid composition is from 0.1% by mass to 0.5% by mass.

12. A sheet-type cosmetic preparation according to any one of claims 1 to 11, wherein the mass ratio of component (A) to component (B) in the liquid composition, component (A) / component (B), is 0.12 or more and 8 or less.

13. The sheet-form cosmetic preparation according to any one of claims 1 to 12, wherein the liquid composition further contains the following component (D): (D) an oily agent that is liquid at 20°C.

14. The sheet-form cosmetic material according to claim 1, wherein the porous silica which is component (A) is a spherical powder.

15. A package in which a sheet-type cosmetic, the sheet of which is impregnated with a liquid composition, is contained within a packaging material, the sheet-type cosmetic comprising one or more sheets selected from woven fabrics and nonwoven fabrics, and a liquid composition containing the following components (A) to (C) and water: (A) Porous silica having an oil absorption of 250 mL / 100 g or more, (B) at least one of (B1) plate-like powder and (B2) spherical powder other than component (A), (C) one or more surfactants selected from (C1) modified silicones and (C2) nonionic surfactants other than modified silicones.

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