Sheet-type cosmetic

Description

[Technical Field]

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

[0002] Sheet-type cosmetics consist of a sheet impregnated with a liquid composition containing cosmetic ingredients and are used to wipe away sweat, sebum, and other substances from the skin. In recent years, there has been a growing demand for sheet-type cosmetics that can be used on a wider area, such as the chest and back, in addition to areas like the neck and arms, creating a need to increase the amount of liquid composition impregnated into the sheet.

[0003] Users tend to place importance not only on the feel of sheet-type cosmetics during use (wiping), but also on the feel after use (after wiping, when sweating begins), and in particular, they want the dry feeling of the skin after sweating to quickly return to the dry feeling of the skin when the sheet-type cosmetic was used. For this reason, as described in Patent Documents 1 and 2, sheet-type cosmetics have been developed that contain powders such as porous silica in a liquid composition, allowing sweat and sebum to be adsorbed onto the powder. [Prior art documents] [Patent Documents]

[0004] [Patent Document 1] Japanese Patent Publication No. 2006-151829 [Patent Document 2] Japanese Patent Publication No. 2007-176813 [Overview of the project]

[0005] A sheet-like cosmetic composition according to one embodiment of the present invention is a sheet-like cosmetic composition in which a liquid composition is impregnated into a sheet, and comprises a sheet and a liquid composition. The aforementioned sheet is one or more types selected from woven fabrics and nonwoven fabrics. The liquid composition contains the following components (A) to (C) and water. (A) Porous silica with an oil absorption capacity of 250 mL / 100 g or more (B)(B1) Plate-shaped powder and (B2) Spherical powder other than component (A) (C) One or more nonionic surfactants selected from (C1) modified silicones and (C2) nonionic surfactants other than modified silicones.

[0006] In one embodiment of the present invention, a packaging material contains a sheet-like cosmetic in which a sheet is impregnated with a liquid composition. The aforementioned sheet-like cosmetic comprises a sheet and a liquid composition. The aforementioned sheet is one or more types selected from woven fabrics and nonwoven fabrics. The liquid composition contains the following components (A) to (C) and water. (A) Porous silica with an oil absorption capacity of 250 mL / 100 g or more (B)(B1) Plate-shaped powder and (B2) Spherical powder other than component (A) (C) One or more nonionic surfactants selected from (C1) modified silicones and (C2) nonionic surfactants other than modified silicones. [Brief explanation of the drawing]

[0007] [Figure 1] This is a schematic diagram showing a non-liquid component contained in the sheet-like cosmetic composition according to this embodiment and transferred to a skin-like surface. [Figure 2] This is a schematic diagram showing the non-liquid components when sweating occurs. [Figure 3] This is a schematic diagram of a package containing a sheet-like cosmetic product according to this embodiment. Detailed description of the invention

[0008] Here, by incorporating powders such as porous silica into the liquid composition, a good feel and texture can be obtained when the sheet is applied to the skin. However, there is a problem that the good texture deteriorates as sweating occurs after application. Furthermore, if porous silica with high oil absorption capacity is added in order to absorb sweat, there is a problem that the feel of the sheet deteriorates.

[0009] The present invention relates to a sheet-like cosmetic that has an excellent feeling of use when used as a sheet and when sweating, and shortens the time until it feels like returning to a smooth and non-sticky skin state immediately after using the sheet after sweating.

[0010] Hereinafter, embodiments of the present invention will be described. The present invention is not limited only to the embodiments shown below, and various modifications can be made without departing from the gist of the present invention.

[0011] [Overall Configuration of Sheet-Like Cosmetic] The sheet-like cosmetic according to the present embodiment includes a sheet and a liquid composition impregnated in the sheet, and is a sheet preparation used for wiping off sweat, sebum, etc. adhering to the skin. Here, "impregnated" includes not only the case where the liquid composition is impregnated into the sheet by immersion, but also the state where the liquid composition is infiltrated into the sheet by spraying or a nozzle, etc., or the state where it is held. Also, "liquid" means a substance that is liquid at 25°C, for example, the viscosity at 25°C is 20,000 mPa·s or less. Hereinafter, "the sheet according to the present embodiment" will be simply referred to as "sheet", and "the liquid composition according to the present embodiment" will be simply referred to as "liquid composition". The sheet is made of a woven fabric or a non-woven fabric and is configured as a base material that holds each component 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 spherical powder. Here, spherical includes true sphere, substantially spherical, and ellipsoid of revolution, and may be spherical powder with irregularities on the 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 salts and sebum are adsorbed onto the porous silica of component (A), suppressing the stickiness of the skin after sweating, so that the usability persists even after application of the sheet cosmetic. Further, even after sweating, the skin quickly returns to a smooth state without stickiness immediately after using the sheet. From the viewpoint of maintaining good usability when using the sheet cosmetic, the oil absorption of the porous silica of component (A) is preferably 250 mL / 100 g or more, more preferably 300 mL / 100 g (see Examples). The oil absorption can be measured according to the measurement method described in JIS K 5101-13-2. There is.

[0013] From the viewpoint of good touch during, after use, and after sweating when using the sheet cosmetic, the porous silica of component (A) preferably includes those with a particle size of 20 μm or less, more preferably those with an average particle size of 0.5 μm or more and 20 μm or less, even more preferably those with an average particle size of 1 μm or more and 12 μm or less, even more preferably those with an average particle size of 3 μm or more and 8 μm or less, and even more preferably those with an average particle size of 3 μm or more and 5 μm or less. In the present 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), and the average particle size is the volume-based median diameter (D50) obtained by measurement. The same applies to each of the following average particle sizes. From the viewpoint of enhancing the usability after using the sheet cosmetic, the content of the 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 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.

[0014] From another perspective, the porous silica content of component (A) in the liquid composition is preferably 0.1% to 5% by mass, more preferably 0.5% to 5% by mass, even more preferably 1% to 5% by mass, and even more preferably 1% to 3% by mass, from the viewpoint of improving the feel after using the sheet-like cosmetic.

[0015] Specifically, as the porous silica of component (A), Sunsphere® H-32 (manufactured by AGC SI-TEC, average particle size: 3 μm, oil absorption capacity: 300 mL / 100 g), Sunsphere® H-52 (manufactured by AGC SI-TEC, average particle size: 5 μm, oil absorption capacity: 300 mL / 100 g) or H-122 (manufactured by AGC SI-TEC, average particle size: 12 μm, oil absorption capacity: 300 mL / 100 g), Sunsphere® H-33 (manufactured by AGC SI-TEC, average particle size: 3 μm, oil absorption capacity: 400 mL / 100 g), or Sunsphere® H-53 (manufactured by AGC SI-TEC, average particle size: 5 μm, oil absorption capacity: 400 mL / 100 g) can be used.

[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, and more preferably 1% by mass or more and 3% by mass or less, from the viewpoint of improving the feel when using the sheet-like 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 component (A) is, for example, porous silica with an oil absorption capacity of less than 250 mL / 100 g. Hereafter, this porous silica will be referred to as the porous silica of component (B2). Note that the spherical powder (B2) other than component (A) is not limited to porous silica, but may be other spherical powders other than component (A).

[0018] From the viewpoint of improving the feel when using sheet-type cosmetics, the average particle size of the porous silica component (B2) is preferably 0.5 μm to 20 μm, more preferably 1 μm to 15 μm, even more preferably 3 μm to 12 μm, and even more preferably 5 μm to 12 μm. From the same viewpoint, the oil absorption capacity of the porous silica 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 sheet-type cosmetics, the content of component (B2) in the liquid composition is preferably 0.1% to 10% by mass, more preferably 0.5% to 7% by mass, and even more preferably 1% to 4% by mass.

[0019] As the spherical powder (B2) other than component (A), porous silica can be used, specifically Sunsphere® H-51 (manufactured by AGC SI-TEC, average particle size: 5 μm, oil absorption: 150 mL / 100 g), Sunsphere® H-121 (manufactured by AGC SI-TEC, average particle size: 12 μm, oil absorption: 150 mL / 100 g), Sunsphere® H-31 (manufactured by AGC SI-TEC, average particle size: 3 μm, oil absorption: 150 mL / 100 g), SILICA MICROBEAD P-500 (manufactured by JGC Catalysts & Chemicals, average particle size: 2 μm, oil absorption: 60 mL / 100 g), SILICA MICROBEAD L-1500 (manufactured by JGC Catalysts & Chemicals, average particle size: 11 μm, oil absorption: 120 mL / 100 g), SILICA MICROBEAD P-4000 (manufactured by JGC Catalysts & Chemicals, average particle size: 30 μm, oil absorption capacity: 60 mL / 100 g) can be used.

[0020] When component (B) is plate-shaped powder (B1), the plate-shaped 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 spherical powder (B2) other than component (A), by incorporating spherical powder with a lower oil absorption capacity compared to component (A), the frequency of snagging between the powder particles of component (A) decreases, reducing the squeaky feeling of the skin. When component (B) contains both plate-shaped powder (B1) and spherical powder (B2) other than component (A), both of the above effects occur. Therefore, the inclusion of component (B) in the liquid composition improves the feel when using sheet-type cosmetics. In particular, from the viewpoint of suppressing stickiness when sweating, a liquid composition containing component (B2) is more preferable.

[0021] From the viewpoint of usability, the mass ratio of component (A) to component (B) in the liquid composition 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 perspective, in a liquid composition, the mass ratio of component (A) to 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, from the viewpoint of usability.

[0023] Component (C) is one or more selected from components (C1) and (C2). Component (C1) is a modified silicone, and component (C2) is a nonionic surfactant other than a modified silicone. Component (C) has a hydrophilic group, and this hydrophilic group adheres to the porous silica of components (A) and (B) by hydrogen bonding to the OH groups of the porous silica.

[0024] 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 alkylglyceryl ether-modified silicone, from the viewpoint of improving feel, and preferably includes at least one polyether-modified silicone or oxazoline-modified silicone.

[0025] Polyether-modified silicones have a structure in which the hydrocarbon groups at the side chains and / or terminals of a silicone oil are replaced with polyether groups. Suitable polyether groups for polyether-modified silicones are polyethylene oxy groups, polypropylene oxy groups, and polyalkylene oxy groups in which ethylene oxy groups (EO) and propylene oxy groups (trimethylene oxy groups or propane-1,2-diyl oxy groups; PO) are added in a block-like or random manner; polyethylene oxy groups are more preferred. As polyether-modified silicones, compounds in which polyether groups are grafted onto a silicone main chain, compounds in which silicone and polyether groups are bonded in a block-like manner, and the like can be used.

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

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

[0029] In this specification, the above mass ratio refers to the value obtained by dissolving the organopolysiloxane of the present invention in deuterated chloroform at a concentration of 5% by mass, and analyzing it by nuclear magnetic resonance (1H-NMR) to determine the integral ratio of alkyl or phenyl groups in the organopolysiloxane segment to methylene groups in the poly(N-acylalkyleneimine) segment.

[0030] In oxazoline-modified silicones, the weight-average molecular weight of the organopolysiloxane segment is, for example, 1 × 10⁻⁶, from the viewpoint of improving usability. 4 The above is preferable to 2 × 10 4 More preferably 3.5 × 10 4 That's all, and also, for example, 3 × 10 5 The following, preferably 2 × 10 5 More preferably 1.5 × 10 5 The following applies:

[0031] Furthermore, since the organopolysiloxane constituting the main chain has a common skeleton with the modified organopolysiloxane, which is the starting compound, 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 the weight-average molecular weight in terms of polystyrene measured under the following conditions by gel permeation chromatography (GPC). 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 addition, in the oxazoline-modified silicone, the number-average molecular weight of the poly(N-acylalkyleneimine) segment is, from the viewpoint of improving the usability, for example, 5×10 2 or more, preferably 7×10 2 or more, more preferably 8×10 2 or more, and also, for example, 4×10 3 or less, preferably 3.5×10 3 or less, more preferably 3×10 3 or less.

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

[0035] Specific examples of the polymer of the oxazoline-modified silicone include those represented by the following general formula (1).

[0036]

Chemical formula

[0037] In the above general formula (1), n represents a number from 1 to 5, and R 9represents 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, X - The symbol () represents the counterion of the quaternary ammonium ion, and is represented by ethyl sulfate ion, methyl sulfate ion, chloride ion, iodide ion, sulfate ion, p-toluenesulfonate ion, or perchlorate ion. A polymerization initiator residue is bound to the N-terminus of the repeating unit of the N-acylalkyleneimine. Examples of polymerization initiators used include diethyl sulfate, dimethyl sulfate, hydrochloric acid, hydrogen iodide, sulfuric acid, p-toluenesulfonic acid, and perchloric acid, and these residues are bound to the N-terminus after polymerization.

[0038] As the polymer of the oxazoline-modified silicone, N-propionyl polyethyleneimine-methylpolysiloxane copolymer (POLYSILICONE-9) is preferred. As POLYSILICONE-9, for example, the one described in Japanese Patent Application Publication No. 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 feel of the sheet-type cosmetic during and after use.

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

[0041] Examples of nonionic surfactants for 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 Kao Corporation's "Emulgen 106," "Emulgen 108," and "Kaosofcare GP-1." Specific examples of alkyl glyceryl ethers include Kao Corporation's "Penetol GE-ID" and "Penetol GE-IS." An example of polyoxyalkylene hydrogenated castor oil is Kao Corporation's "Emanon CH-60K."

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

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

[0045] The liquid composition further contains water. The water content in the liquid composition may be the remainder after removing components other than water. From the viewpoint of improving the moisture retention of the sheet-type cosmetic and suppressing skin irritation, the water content 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 skin is wiped with the sheet-like cosmetic according to the embodiment, the liquid composition is transferred to the skin. The liquid component of the liquid composition evaporates rapidly, leaving the non-liquid component and the liquid component held by the non-liquid component on the skin. Figure 1 is a schematic diagram showing the non-liquid component on the skin 50. As shown in the figure, porous silica 11 of component (A), porous silica 12 of component (B2), and talc 13 of component (B1), which are non-liquid components, are attached to the skin 50 and are coated with modified silicone 14 of component (C1).

[0047] Figure 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 the skin 50, the modified silicone 14 of component (C1) absorbs the sweat 51, while the porous silica 11 of component (A) and the porous silica 12 of component (B2) adsorb the sebum 52 and sweat components 53. Sweat components 53 are sodium chloride (NaCl) and lactic acid.

[0048] Porous silica (component A) exhibits superior sebum and lactic acid adsorption compared to porous silica (component B2) and talc (component B1). Furthermore, porous silica (component A) suppresses the adverse effects of sweat components (NaCl) and allows for rapid sweat evaporation.

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

[0050] Furthermore, the adhesion of talc 13 of component (B1) to the skin 50 reduces the unevenness of the skin 50, improving its smoothness. In addition, the presence of porous silica 11 of component (A) and porous silica 12 of component (B2), which have different oil absorption capacities, on the skin 50 reduces the frequency of friction between the powder particles of component (A), thereby reducing the squeaky feeling of the 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 good slipperiness. Therefore, it is possible to provide the skin 50 with a high degree of smoothness.

[0052] Thus, the sheet-type cosmetic composition according to this embodiment can achieve an excellent feel during use and after sweating. As mentioned above, the liquid composition may contain only one of talc 13 or porous silica 12, or it may contain other plate-shaped powders instead of talc 13, or other spherical powders instead of porous silica 12. Furthermore, the liquid composition may contain other nonionic surfactants instead of 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. The inclusion of silicone oil as component (D) in the liquid composition improves the feel of the sheet-type cosmetic when used and after sweating. From the viewpoint of improving the feel of the sheet-type cosmetic when used 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). Specifically, components (D) can include KF-96A-10CS (manufactured by Shin-Etsu Chemical Co., Ltd., dimethicone), KF-96A-6CS (manufactured by Shin-Etsu Chemical Co., Ltd., dimethicone), KM-910 (manufactured by Shin-Etsu Chemical Co., Ltd., highly polymerized methylpolysiloxane emulsion), etc.

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

[0056] Anionic polymers can suppress the sedimentation of silica, which exists as heavier secondary particles due to the thickening effect caused by electrostatic repulsion in the liquid composition when it exists alone before being impregnated into the sheet during the manufacturing process. As a result, when the liquid composition is impregnated into the sheet, the silica particles can be dispersed more uniformly, making it easier to obtain a sheet-type cosmetic with well dispersed silica particles. From the viewpoint of suppressing powder sedimentation, the content of anionic polymers in the liquid composition can be, for example, 0.005% by mass or more and 0.3% by mass or less, more preferably 0.01% by mass or more and 0.1% by mass or less, and even more preferably 0.02% by mass or more and 0.06% by mass or less.

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

[0058] Among these, examples of (co)polymers of (meth)acrylic acid or its derivatives 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 with acryloyldimethyltaurine or its salt as monomer components. Specifically, examples include (sodium acrylate / sodium acryloyldimethyltaurine) copolymer, (hydroxyethyl acrylate / sodium acryloyldimethyltaurine) copolymer, (sodium acrylate / acryloyldimethyltaurine / dimethylacrylamide) crosspolymer, (acrylamide / ammonium acrylate) copolymer, polyacrylate-13, polyacrylate crosspolymer-6, etc., 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 Co., Ltd.), "Carbopol 1342", "Carbopol 1382", "Carbopol ETD2020", "Carbopol Ultrez20", "Carbopol Ultrez21", "Pemlen TR-1", and "Pemlen 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 copolymer, vinylimidazolium trichloride / vinylpyrrolidone copolymer, hydroxyethylcellulose / dimethyldiallylammonium chloride copolymer, vinylpyrrolidone / quaternized dimethylaminoethyl methacrylate copolymer, polyvinylpyrrolidone / alkylaminoacrylate copolymer, polyvinylpyrrolidone / alkylaminoacrylate / vinylcaprolactam copolymer, vinylpyrrolidone / methacrylamidopropyl trimethylammonium chloride copolymer, and alkylacrylamide / acrylate / alkylaminoalkylacrylamide / polyethylene glycol methacrylate copolymer. Examples of cationic surfactants include benzalkonium chloride and dialkyldimethylammonium chloride.

[0061] Among cationic compounds, cationic polymers tend to cause "slippery" or "sticky" sensations on skin to which the liquid composition is transferred. Furthermore, cationic compounds tend to counteract the thickening effect caused by electrostatic repulsion from anionic polymers when the liquid composition exists alone before being impregnated into a sheet. For this reason, the content of cationic compounds in the liquid composition is preferably 0% by mass if anionic polymers are included, but if cationic compounds are 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. In addition, if the liquid composition does not contain anionic polymers, the content of cationic compounds in the liquid composition is preferably 0.0005% by mass or more and 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] [Packaging] The packaging body containing the sheet-like cosmetic material according to this embodiment will now be described. Figure 3 is a schematic diagram of this packaging body 100. As shown in the figure, the packaging body 100 has a plurality of sheet-like cosmetic materials 10 and a packaging material 20. In the packaging body 100, the sheet-like cosmetic materials 10 according to this embodiment are housed in the packaging material 20 in a laminated state where they are directly stacked on top of each other.

[0064] The packaging material 20 has an opening 20a at a position opposite to the lamination direction of the sheet-like cosmetic. The packaging material 20 has a sealing body S attached to it that covers the opening 20a. In the package 100, it is possible to remove the sheet-like cosmetic 10 one by one by peeling off at least a part of the sealing body S from the packaging material 20 to open the opening 20a.

[0065] [Detailed sheet structure] The sheet is a sheet material or sheet layer formed of fibers, and is one or more selected from woven fabrics and nonwoven fabrics. That is, the sheet may be a single layer made of woven fabric and / or nonwoven fabric, or it may be a laminate of a layer made of woven fabric and / or nonwoven fabric and a layer made of other materials. Examples of fibers or materials constituting sheet X include cellulose or natural fibers such as cotton and pulp, processed fibers from natural raw materials such as lyocell, cupro, rayon, and acetate, acrylic resins such as polymethacrylate and polyacrylonitrile, polyester such as polyethylene terephthalate (PET), polyethylene (PE), polypropylene (PP), polyurethane, and polyamides such as nylon, and two or more of these may be blended together.

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

[0067] The basis weight of the sheet is set at an average of 20 g / m², from the perspective of ensuring good retention of the liquid composition and a pleasant feel during wiping. 2 More than 150g / m 2 The following is preferable, 30g / m 2 More than 100g / m 2 The following is more preferable: 40g / m² 2 More than 80g / m 2 The following is even more preferable. The average basis weight is determined in accordance with JIS L 1913, by cutting the sheet to a certain area and measuring its mass, and using this as the basis weight per 1 m². 2 It can be calculated by converting it to its mass.

[0068] The sheet thickness is preferably 0.15 mm to 1.30 mm, and more preferably 0.30 mm to 0.90 mm, from the viewpoint of good retention of the liquid composition and a good feel during wiping. The sheet thickness is 20 gf / cm² under pressure. 2 The load is obtained by measuring it with a dial gauge. The shape and size of the sheet should be such that it is easy to wipe the skin, such as the face, and can be rectangular, for example, with sides of 3 cm to 30 cm.

[0069] Although embodiments of the present invention have been described above, the present invention is not limited to the embodiments described above, and various modifications can be made without departing from the spirit of the present invention. [Examples]

[0070] Sheet-type cosmetic compositions according to the examples and comparative examples of the present invention were prepared, and their usability was evaluated. Tables 1 to 5 show the composition of the liquid compositions constituting the sheet-type cosmetic compositions according to the examples and comparative examples. The values ​​shown in Tables 1 to 5 represent the content in the liquid composition, and the unit is mass%.

[0071] [Table 1]

[0072] [Table 2]

[0073] [Table 3]

[0074] [Table 4]

[0075] [Table 5]

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

[0077] For each example and comparative example, the liquid compositions shown in Tables 1 to 4 were incorporated into a sheet to create a sheet-type cosmetic. 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), with a basis weight of 50.0 g / m². 2 In each example and comparative example, the impregnation rate of the liquid composition into the sheet was set to 350%.

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

[0079] Component (B) is at least one of plate-shaped powder (B1) and spherical powder other than component (A) (B2). As spherical powder other than component (A) (B2), Sunsphere® H-51 (manufactured by AGC SI-TEC, average particle size: 5 μm, oil absorption: 150 mL / 100 g), Sunsphere® H-121 (manufactured by AGC SI-TEC, average particle size: 12 μm, oil absorption: 150 mL / 100 g), and Sunsphere® H-31 (manufactured by AGC SI-TEC, average particle size: 3 μm, oil absorption: 150 mL / 100 g) were used. In addition, talc JA-68R (manufactured by Asada Flour Milling Co., Ltd.) was used as plate-shaped 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® 108 (manufactured by Kao Corporation, polyoxyethylene lauryl ether, HLB: 12.1) and Penetol® 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] In addition, the following components were used: Pemlen TR-1 (manufactured by Lubrizol Advanced Materials, acrylic acid / alkyl methacrylate copolymer), 48 potassium hydroxide (48% potassium hydroxide aqueous solution), ethanol (95% concentration), Hysolve EPH (manufactured by Toho Chemical Industry Co., Ltd., phenoxyethanol), and Mekkins M (manufactured by Toho Chemical Industry Co., Ltd., methyl parahydroxybenzoate).

[0083] The skin was wiped with the sheet-type cosmetic according to the examples and comparative examples, and the testers evaluated the following based on their sense of touch: "skin feels dry after use," "skin feels smooth after use," "skin does not feel tight after use," and "skin does not feel powdery after use." "Skin feels dry after use" was judged as one of the following: "very dry: 5," "dry: 4," "somewhat dry: 3," "neither: 2," or "not dry: 1." "Skin feels smooth after use" was judged as one of the following: "very smooth: 5," "smooth: 4," "somewhat smooth: 3," "neither: 2," or "not smooth: 1." "Skin does not feel tight after use" was judged as one of the following: "not at all tight: 5," "not tight: 4," "somewhat not tight: 3," "neither: 2," or "tight: 1." For the question "Does the skin feel powdery after use?", users were rated as follows: "Not powdery: 5", "Slightly not powdery: 4", "Neither: 3", "Slightly powdery: 2", or "Powdery: 1".

[0084] Furthermore, after wiping the skin with a sheet-type cosmetic, simulated sweat was applied, and the testers evaluated the "feeling of non-stickiness on the skin during sweating" and the "time it took to feel that the skin returned to its normal state after use" based on their tactile perception. The "feeling of non-stickiness on the skin during sweating" was judged as follows: "Not sticky: 5", "Not very sticky: 4", "Neither: 3", "Sticky: 2", "Very sticky: 1". The "time it took to feel that the skin returned to its normal state after using the sheet" was judged as follows: "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", "85 seconds or more: 1". The simulated 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 accumulates, these concentrations were set to five times the concentration of normal sweat.

[0085] Examples 1 to 19 show that sheet-type cosmetics containing components (A), (B), and (C) in the liquid composition are superior in all aspects: "skin feels smooth after use," "skin feels silky after use," "skin does not feel tight after use," "skin does not feel powdery after use," "skin does not feel sticky when sweating," and "time until the skin returns to its original state after use." On the other hand, Comparative Examples 3 (without component (A)), 1 (without component (B)), and 2 (without component (C)) show that when the liquid composition does not contain any of components (A), (B), or (C), it is inferior in one or more of these evaluation results. Therefore, it can be said that when the liquid composition contains components (A), (B), and (C), the sheet-type cosmetic is superior in terms of feel during use and after sweating.

[0086] Regarding component (C), Example 5 shows that when component (C) consists only of a nonionic surfactant (C2) other than modified silicone, the "smooth feeling of the skin after use," the "non-powdery feeling of the skin after use," and the "non-sticky feeling of the skin when sweating" decrease. Therefore, it can be said that component (C) containing modified silicone (C1) is preferable. [Explanation of Symbols]

[0087] 10…Sheet-type cosmetic 11…Porous silica 12…Porous silica 13… Talc 14…Modified silicone [Industrial applicability]

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

Claims

1. A sheet-type cosmetic in which a liquid composition is impregnated into a sheet, One or more sheets selected from woven fabrics and nonwoven fabrics, A liquid composition containing the following components (A) to (C) and water A sheet-type cosmetic product containing [the specified features]. (A) Porous silica with an oil absorption capacity of 250 mL / 100 g or more (B) (B1) Plate-shaped powder and (B2) At least one of porous silica having an oil absorption capacity of less than 250 mL / 100 g and an average particle size of 0.5 μm or more and 20 μm or less. (C) One or more nonionic surfactants selected from (C1) modified silicones and (C2) nonionic surfactants other than modified silicones.

2. The sheet-like cosmetic composition according to claim 1, wherein the porous silica, which is component (A), includes particles with a particle size of 20 μm or less.

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

4. The sheet-like cosmetic composition according to claim 1, wherein the content of component (B2) in the liquid composition is 0.1% by mass or more and 10% by mass or less.

5. The sheet-like cosmetic composition according to any one of claims 1 to 3, wherein the plate-like powder that is component (B1) is talc.

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

7. The sheet-like cosmetic composition according to claim 1, wherein the modified silicone component (C1) is one or more selected from polyether-modified silicone and oxazoline-modified silicone.

8. The sheet-like cosmetic composition according to claim 7, wherein the content of component (C1) in the liquid composition is 0.03% by mass or more and 0.8% by mass or less.

9. The sheet-like cosmetic composition according to claim 1, wherein the nonionic surfactant, which is component (C2), has an HLB (Hydrophile Lipophile Balance) value of 1 or more and 15 or less.

10. The sheet-like cosmetic composition according to claim 9, wherein the content of component (C2) in the liquid composition is 0.1% by mass or more and 0.5% by mass or less.

11. The sheet-like cosmetic composition according to claim 1, wherein the mass ratio of component (A) to component (B) in the liquid composition is 0.12 or more and 8 or less for component (A) / component (B).

12. The sheet-like cosmetic composition according to claim 1, wherein the liquid composition further contains the following component (D). (D) Liquid oil at 20°C

13. The porous silica, which is component (A) mentioned above, is in the form of spherical powder. The sheet-like cosmetic composition according to claim 1.

14. A package containing a sheet-like cosmetic in which a liquid composition is impregnated into a sheet, The aforementioned sheet-like cosmetic composition is One or more sheets selected from woven fabrics and nonwoven fabrics, A liquid composition containing the following components (A) to (C) and water A packaging body equipped with the following features. (A) Porous silica with an oil absorption capacity of 250 mL / 100 g or more (B) (B1) Plate-shaped powder and (B2) At least one of porous silica having an oil absorption capacity of less than 250 mL / 100 g and an average particle size of 0.5 μm or more and 20 μm or less. (C) One or more nonionic surfactants selected from (C1) modified silicones and (C2) nonionic surfactants other than modified silicones.

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