Sheet-shaped cosmetic

Abstract

[Problem] For a sheet-shaped cosmetic, it is possible to contain a salt-type whitening agent without reducing the viscosity of a base, it does not drip even if it is attached to the skin, the sticky feeling after peeling off the sheet is excellent, and although the sheet has high adhesion to the skin, it is not sticky after peeling off. [Solution] A sheet-shaped cosmetic is obtained by impregnating a nonwoven fabric with a base, the base containing at least (A) a hydrophobically modified polyether polyurethane and (B) a salt-type whitening agent.

Description

Technical Field

[0001] This invention relates to sheet cosmetics impregnated with a base. Background Technology

[0002] Skin cosmetics containing whitening agents are well-known. For example, Patent Document 1 describes a skin cosmetic containing tranexamic acid and ascorbate glucoside. Patent Document 2 describes a gel composition containing L-ascorbic acid 2-glucoside, 3-o-ethyl ascorbic acid, kojic acid, ellagic acid, hydroquinone-β-D-glucoside, 4-n-butylresorcinol, 5,5'-dipropylbiphenyl-2,2'-diol, hexadecyl tranexamic acid HCl, trans-4-(aminomethyl)cyclohexanecarboxylic acid, nicotinamide, and potassium 4-methoxysalicylate.

[0003] On the other hand, sheet-like cosmetics, such as face masks, are known to be made by impregnating nonwoven fabrics with cosmetics. For example, Patent Document 3 describes a sheet-like cosmetic containing whitening, anti-inflammatory, and moisturizing ingredients such as tranexamic acid and potassium 4-methoxysalicylate as active ingredients, and also containing polysaccharides that produce alkaloidobacteria.

[0004] Existing technical documents

[0005] Patent documents

[0006] Patent Document 1: International Publication No. 2019 / 093254

[0007] Patent Document 2: Japanese Patent Application Publication No. 2019-14672

[0008] Patent Document 3: Japanese Patent Application Publication No. 2018-62484 Summary of the Invention

[0009] The problem the invention aims to solve

[0010] In order to suppress dripping when placed on the skin, sheet cosmetics such as those impregnated with nonwoven fabric require a high-viscosity base agent. However, so-called salt-type whitening agents such as 4-methoxysalicylate reduce the viscosity of thickeners commonly used in cosmetics due to their salt content. Therefore, to date, there are no sheet cosmetics that contain salt-type whitening agents, are drip-free, and have high adhesion to the skin.

[0011] The present invention was made in view of the above-mentioned problems, and its object is to provide a sheet cosmetic that can contain a salt-based whitening agent without reducing the viscosity of the base, does not drip even when attached to the skin, has an excellent viscous feel after peeling off, and is not sticky after peeling off despite its high adhesion to the skin.

[0012] Solution for solving the problem

[0013] The sheet-like cosmetic of the present invention is made by impregnating a nonwoven fabric with a base agent, said base agent comprising at least (A) a hydrophobically modified polyether polyurethane and (B) a salt-type whitening agent.

[0014] (B) Salt-type whitening agents are preferably potassium salt of 4-methoxysalicylate or ascorbate glucoside.

[0015] The preferred mass ratio of (A) hydrophobically modified polyether polyurethane to (B) salt-type whitening agent is 0.2 to 1.

[0016] Preferably, it also contains (C) carboxyl vinyl polymer.

[0017] Preferably, it also contains at least one of (D) polyoxyethylene glycerol fatty acid ester or polyoxyethylene hydrogenated castor oil.

[0018] Preferably, it also contains (E) isostearic acid.

[0019] (A) The hydrophobically modified polyether polyurethane is preferably a PEG-240 / HDI copolymer bis-decyltetradecyl alcohol polyether-20 ether.

[0020] (D) Polyoxyethylene glycerol fatty acid ester is preferably PEG-20 glycerol (mono) isostearate.

[0021] (D) Polyoxyethylene hydrogenated castor oil is preferably PEG-60 hydrogenated castor oil.

[0022] Preferably, it also contains 0.2 to 4% by mass of (F)-diglyceride relative to the total amount of the base agent.

[0023] Preferably, it also contains 2-5% by mass of (G) a kinematic viscosity of 50 mm at 25°C relative to the total amount of base agent. 2 Polydimethylsiloxane with a strength of / s or higher.

[0024] Nonwoven fabrics preferably contain polyester fibers and cellulose fibers.

[0025] The effects of the invention

[0026] The sheet cosmetic of the present invention is made by impregnating a nonwoven fabric with a base containing (A) a hydrophobically modified polyether polyurethane and (B) a salt-type whitening agent. Therefore, it is possible to make a sheet cosmetic that can contain a salt-type whitening agent without reducing the viscosity of the base, does not drip even when attached to the skin, has an excellent stickiness after peeling off the sheet, and is non-sticky after peeling off despite the high adhesion of the sheet to the skin. Detailed Implementation

[0027] The sheet-like cosmetic of the present invention will now be described in detail.

[0028] The sheet-like cosmetic of the present invention is made by impregnating a nonwoven fabric with a base agent, said base agent comprising at least (A) a hydrophobically modified polyether polyurethane and (B) a salt-type whitening agent.

[0029] The following describes the components of the base agent and the nonwoven fabric impregnated with the base agent. It should be noted that the components will sometimes be referred to as component (A), component (B), etc.

[0030] Additionally, in this specification, HDI stands for hexamethylene diisocyanate, POE for polyethylene oxide, PEG for polyethylene glycol, POP for polypropylene oxide, PPG for polypropylene glycol, DPG for dipropylene glycol, BG for butanediol, EO for ethylene oxide, and PO for propylene oxide.

[0031] (A) Hydrophobic modified polyether polyurethane

[0032] (A) The hydrophobic modified polyether polyurethane is the hydrophobic modified polyether polyurethane represented by the following formula (I).

[0033]

[0034] In formula (I) above, R1, R2, and R4 independently represent alkylene groups or phenylethylene groups having 2 to 4 carbon atoms. Preferably, they are alkylene groups having 2 to 4 carbon atoms.

[0035] R3 represents an alkylene group having 1 to 10 carbon atoms and optionally containing a carbamate bond.

[0036] R5 represents a straight-chain, branched, or secondary alkyl group with 8 to 36 carbon atoms, preferably 12 to 24.

[0037] m is a number greater than or equal to 2. 2 is the preferred number.

[0038] h is a number greater than or equal to 1. Option 1 is preferred.

[0039] k is a number from 1 to 500. Preferably, it is a number from 100 to 300.

[0040] n is a number from 1 to 200. Preferably, it is a number from 10 to 100.

[0041] Examples of hydrophobically modified polyether polyurethanes represented by formula (I) include R1-[(O-R2)]. k -OH] m (Here, the definitions of R1, R2, k, and m are the same as above) One or more polyether polyols are shown in the figure, along with R3-(NCO). h+1 (Here, the definitions of R3 and h are the same as above) One or more polyisocyanates are shown in relation to HO-(R4-O) nThe method of obtaining the product by reacting one or more polyether monohydric alcohols as shown in R5 (where R4, R5, and n are defined as above) is a preferred example.

[0042] In this case, R1 to R5 in equation (I) are determined by the R1-[(O-R2)] used. k -OH] m R3-(NCO) h+1 HO-(R4-O) n -R5 is the determining factor. There is no particular limitation on the input ratio of the above three components, but the ratio of hydroxyl groups derived from polyether polyols and polyether monohydric alcohols to isocyanate groups derived from polyisocyanates is preferably NCO / OH = 0.8:1 to 1.4:1.

[0043] The above formula is R1-[(O-R2)] k -OH] m The polyether polyol compound shown is obtained by addition polymerization of ethylene oxide, propylene oxide, butane oxide, epichlorohydrin and other alkyl oxides, styrene oxide and other polyols with m-valent polyols.

[0044] Here, polyols with a valence of 2 to 8 are preferred, and examples include diols such as ethylene glycol, propylene glycol, butanediol, hexanediol, and neopentyl glycol; glycerol, trioxoisobutane, 1,2,3-butanetriol, 1,2,3-pentanetriol, 2-methyl-1,2,3-propanetriol, 2-methyl-2,3,4-butanetriol, 2-ethyl-1,2,3-butanetriol, 2,3,4-pentanetriol, 2,3,4-hexanetriol, 4-propyl-3,4,5-heptanetriol, and 2,4-dimethyl... Triols such as -2,3,4-pentanetriol, pentamethylglycerol, pentaglycerol, 1,2,4-butanetriol, 1,2,4-pentanetriol, trimethylolpropane, and trimethylolpropane; tetraols such as pentaerythritol, 1,2,3,4-pentanetriol, 2,3,4,5-hexanetriol, 1,2,4,5-pentanetriol, and 1,3,4,5-hexanetriol; pentahydrols such as pentapentylenetriol, arbutin, and xylitol; hexahydrols such as dipentaerythritol, sorbitol, mannitol, and idole; and octahydrols such as sucrose.

[0045] In addition, R2 is determined by the addition of alkylene oxide, styrene oxide, etc., but in terms of being particularly easy to obtain and having excellent effects, alkylene oxide or styrene oxide with 2 to 4 carbon atoms is preferred.

[0046] The added epoxides, styrene oxides, etc., can be homopolymers, random polymers of two or more types, or block polymers. The addition method can be a conventional method. The degree of polymerization k is 1–500. The ethylene group in R2 preferably accounts for 50–100% by mass of all R2.

[0047] R1-[(O-R2) k -OH]m The molecular weight is preferably 500,000 to 100,000, and particularly preferably 1,000,000 to 50,000.

[0048] The above equation is R3-(NCO) h+1 There are no particular limitations on the polyisocyanates shown, as long as the molecule has two or more isocyanate groups. Examples include aliphatic diisocyanates, aromatic diisocyanates, alicyclic diisocyanates, biphenyl diisocyanates, and di-, tri-, and tetra-isocyanates of phenylmethane.

[0049] Examples of aliphatic diisocyanates include methylene diisocyanate, dimethylene diisocyanate, trimethylene diisocyanate, tetramethylene diisocyanate, pentamethylene diisocyanate, hexamethylene diisocyanate, dipropyl ether diisocyanate, 2,2-dimethylpentane diisocyanate, 3-methoxyhexane diisocyanate, octamethylene diisocyanate, 2,2,4-trimethylpentane diisocyanate, nonamethylene diisocyanate, decamethylene diisocyanate, 3-butoxyhexane diisocyanate, 1,4-butanediol dipropyl ether diisocyanate, thiodihexyl diisocyanate, m-phenylenediamine diisocyanate, terephthalic acid diisocyanate, and tetramethylphenylenediamine diisocyanate.

[0050] Examples of aromatic diisocyanates include isophenyl diisocyanate, terephthalic diisocyanate, 2,4-toluene diisocyanate, 2,6-toluene diisocyanate, dimethylphenyl diisocyanate, ethylphenyl diisocyanate, isopropylphenyl diisocyanate, dimethylbiphenyl diisocyanate, 1,4-naphthalene diisocyanate, 1,5-naphthalene diisocyanate, 2,6-naphthalene diisocyanate, and 2,7-naphthalene diisocyanate.

[0051] Examples of alicyclic diisocyanates include hydrogenated phenyl dimethyl isocyanate and isophorone diisocyanate.

[0052] Examples of biphenyl diisocyanates include biphenyl diisocyanate, 3,3'-dimethylbiphenyl diisocyanate, and 3,3'-dimethoxybiphenyl diisocyanate.

[0053] Examples of diisocyanates of phenylmethane include diphenylmethane-4,4'-diisocyanate, 2,2'-dimethyldiphenylmethane-4,4'-diisocyanate, diphenyldimethylmethane-4,4'-diisocyanate, 2,5,2',5'-tetramethyldiphenylmethane-4,4'-diisocyanate, cyclohexylbis(4-isocyanatophenyl)methane, and 3,3'-dimethoxydiphenylmethane. 4,4'-diisocyanate, 4,4'-dimethoxydiphenylmethane-3,3'-diisocyanate, 4,4'-diethoxydiphenylmethane-3,3'-diisocyanate, 2,2'-dimethyl-5,5'-dimethoxydiphenylmethane-4,4'-diisocyanate, 3,3'-dichlorodiphenyldimethylmethane-4,4'-diisocyanate, benzophenone-3,3'-diisocyanate, etc.

[0054] Examples of triisocyanates of phenylmethane include 1-methylbenzene-2,4,6-triisocyanate, 1,3,5-trimethylbenzene-2,4,6-triisocyanate, 1,3,7-naphthalene triisocyanate, biphenyl-2,4,4'-triisocyanate, diphenylmethane-2,4,4'-triisocyanate, 3-methyldiphenylmethane-4,6,4'-triisocyanate, triphenylmethane-4,4',4”-triisocyanate, 1,6,11-undecane triisocyanate, 1,8-diisocyanate-4-isocyanate methyl octane, 1,3,6-hexamethylene triisocyanate, bicycloheptane triisocyanate, and tris(isocyanatophenyl)thiophosphate.

[0055] In addition, these polyisocyanate compounds can be used as dimers or trimers (isocyanurate bonds), or they can be reacted with amines to be used as biuret.

[0056] Furthermore, polyisocyanates with urethane bonds, obtained by reacting these polyisocyanate compounds with polyols, can also be used. As the polyol, alcohols with 2 to 8 valences are preferred, and the aforementioned polyols are more preferred. It should be noted that R3-(NCO) is used... h+1 When using polyisocyanates with a valence of 3 or higher, polyisocyanates having the urethane bond are preferred.

[0057] The above formula is HO-(R4-O) n -R5 indicates that there are no particular limitations on the polyether monohydric alcohols as long as they are straight-chain, branched, or monohydric secondary alcohols. Such compounds can be obtained by addition polymerization of ethylene oxide, propylene oxide, butane oxide, epichlorohydrin, and other alkyl oxidants, as well as styrene oxide, with straight-chain, branched, or monohydric secondary alcohols.

[0058] The straight-chain alcohols described herein are represented by formula (II).

[0059] R6-OH(II)

[0060] In addition, the branched alcohols described herein are represented by formula (III).

[0061]

[0062] In addition, secondary alcohols are represented by the following formula (IV).

[0063]

[0064] Therefore, R5 is any group in formulas (II) to (IV) except for the hydroxyl group. In formulas (II) to (IV), R6, R7, R8, and R... 10 and R 11 It can be a hydrocarbon group or a fluorocarbon group, such as alkyl, alkenyl, alkylaryl, cycloalkyl, cycloalkenyl, etc.

[0065] Examples of alkyl groups include methyl, ethyl, propyl, isopropyl, butyl, isobutyl, tert-butyl, pentyl, isopentyl, neopentyl, tert-pentyl, hexyl, heptyl, octyl, 2-ethylhexyl, nonyl, decyl, undecyl, dodecyl, tridecyl, isothiaderanyl, myristyl, palmityl, stearyl, isostearyl, eicosyl, dodecyl, tetradecyl, triacontyl, 2-octyldodecyl, 2-dodecylhexadecyl, 2-tetradecyloctadecyl, monomethyl branched-isostearoyl, etc.

[0066] Examples of alkenyl groups include vinyl, allyl, propenyl, isopropenyl, butenyl, pentenyl, isopentenyl, hexenyl, heptenyl, octenyl, nonenyl, decenyl, undecenyl, dodecenyl, tetradecenyl, and oleyl.

[0067] Examples of alkylaryl groups include phenyl, tolyl, xylyl, cumenel, mesitylelel, benzyl, phenethyl, styryl, cinnamyl, diphenylmethyl, triphenylmethyl, ethylphenyl, propylphenyl, butylphenyl, pentylphenyl, hexylphenyl, heptylphenyl, octylphenyl, nonylphenyl, α-naphthyl, β-naphthyl, etc.

[0068] Examples of cycloalkyl and cycloalkenyl groups include cyclopentyl, cyclohexyl, cycloheptyl, methylcyclopentyl, methylcyclohexyl, methylcycloheptyl, cyclopentenyl, cyclohexenyl, cycloheptenyl, methylcyclopentenyl, methylcyclohexenyl, and methylcycloheptenyl.

[0069] In formula (III) above, R9 is a hydrocarbon group or a fluorocarbon group, such as an alkylene group, an alkenylene group, an alkylarylene group, an cycloalkylene group, an alkenylene group, an alkenylene group, etc.

[0070] In addition, R5 is a hydrocarbon group or a fluorocarbon group, wherein an alkyl group is preferred, and further preferably, the total number of carbon atoms is 8 to 36, and particularly preferably 12 to 24.

[0071] Furthermore, the added epoxides, styrene oxides, etc., can be homopolymers, random polymers of two or more types, or block polymers. The addition method can be a conventional method. The degree of polymerization n is preferably 0–1000, 1–200, and even more preferably 10–200. Additionally, it is desirable that the ethylene group constitutes 50–100% by mass of all R4, and even more preferably 65–100% by mass.

[0072] As a method for producing the copolymer shown in formula (I), similar to the usual reaction of polyether and isocyanate, it can be obtained by, for example, heating at 80 to 90°C for 1 to 3 hours.

[0073] Additionally, make R1-[(O-R2)] k -OH] m The polyether polyols shown are (a) and R3-(NCO). h+1 When the polyisocyanate (b) shown reacts with the polyether monohydric alcohol (c) represented by HO-(R4-O)n-R5, substances other than copolymers of formula (I) may sometimes be produced as byproducts. For example, when using diisocyanate, a copolymer of the cbabc type shown by formula (I) is generated as the main product, but sometimes cbc type and cb-(ab) type copolymers are also produced as byproducts. x Copolymers of type -abc, etc. In this case, it is not necessary to specifically separate the copolymer of type (I), and it can be used in the present invention as a mixture containing the copolymer of type (I).

[0074] As a particularly preferred example, a hydrophobically modified polyether polyurethane with the INCI name "PEG-240 / HDI copolymer bis-decyltetradeceth-20 ether (PEG-240 / HDI COPOLYMER BISDECYLTETRADECETH-20ETHER)" can be cited. This copolymer is commercially available by ADEKA Corporation under the trade name "ADEKA NOL GT-700".

[0075] The amount of (A) hydrophobically modified polyether polyurethane is preferably 0.1 to 3% by mass, more preferably 0.3 to 2.5% by mass, and ideally 0.5 to 3% by mass relative to the total amount of the base agent. By using an amount of 0.1% by mass or more, (B) salt-type whitening agent can be contained without further reducing the viscosity of the base agent, and a more viscous and unique feel can be obtained after peeling. By using an amount of 3% by mass or less, a product with better adhesion to the skin and less stickiness after peeling can be obtained.

[0076] (B) Salt-based skin whitening agents

[0077] (B) Salt-type whitening agents refer to water-soluble agents that can form salts. These can be whitening agents that form salts in their natural state or those that react with other compounds to form salts. There are no particular limitations as long as the agent is water-soluble; it can be combined with any desired agent. Preferred examples include salts of L-ascorbic acid and its derivatives, salts of tranexamic acid and its derivatives, salts of alkoxysalicylic acid and its derivatives, and salts of glutathione and its derivatives.

[0078] L-Ascorbic acid, commonly known as vitamin C, has cellular respiration, enzyme activation, and collagen formation effects due to its strong reducing properties, and it also has melanin reduction effects. As derivatives of L-ascorbic acid, examples include L-ascorbic acid monoalkyl esters such as L-ascorbic acid monostearate, L-ascorbic acid monopalmitate, and L-ascorbic acid monooleate; L-ascorbic acid monoesters such as L-ascorbic acid monophosphate and L-ascorbic acid-2-sulfate; L-ascorbic acid dialkyl esters such as L-ascorbic acid distearate, L-ascorbic acid dipalmitate, and L-ascorbic acid dioleate; L-ascorbic acid trialkyl esters such as L-ascorbic acid tristearate, L-ascorbic acid tripalmitate, and L-ascorbic acid trioleate; L-ascorbic acid triesters such as L-ascorbic acid triphosphate; and L-ascorbic acid glucosides such as L-ascorbic acid 2-glucoside. In this invention, it is suitable to use the salts of L-ascorbic acid, L-ascorbic acid phosphate, L-ascorbic acid-2-sulfate, L-ascorbic acid-2-glucoside, and magnesium ascorbic acid phosphate.

[0079] Examples of trast acid derivatives include: dimers of trast acid (e.g., trans-4-(trans-aminomethylcyclohexanecarbonyl)aminomethylcyclohexane carboxylic acid hydrochloride), esters of trast acid and hydroquinone (e.g., 4-(trans-aminomethylcyclohexane carboxylic acid 4'-hydroxyphenyl ester), esters of trast acid and gentianic acid (e.g., 2-(trans-4-aminomethylcyclohexylcarbonyloxy)-5-hydroxybenzoic acid), and amides of trast acid (e.g., trans-4-aminomethylcyclohexane carboxylic acid formamide, trans-4-(p-methoxybenzoyl)aminomethylcyclohexane carboxylic acid, trans-4-guanidinylmethylcyclohexane carboxylic acid, etc.). In this invention, it is suitable to use trast acid in the form of salts of trast acid or salts of trast acid derivatives.

[0080] Alkoxysalicylic acid is formed by substituting an alkoxy group for any hydrogen atom at the 3, 4, or 5 position of salicylic acid. The alkoxy group is preferably any one of methoxy, ethoxy, propoxy, isopropoxy, butoxy, or isobutoxy, and more preferably methoxy or ethoxy. Specifically, examples of alkoxysalicylic acid include 3-methoxysalicylic acid, 3-ethoxysalicylic acid, 4-methoxysalicylic acid, 4-ethoxysalicylic acid, 4-propoxysalicylic acid, 4-isopropoxysalicylic acid, 4-butoxysalicylic acid, 5-methoxysalicylic acid, 5-ethoxysalicylic acid, and 5-propoxysalicylic acid. In this invention, it is suitable to use alkoxysalicylic acid in the form of various salts of its derivatives (esters, etc.).

[0081] There are no particular limitations on the salts used in the aforementioned reagents. For example, alkali metal salts or alkaline earth metal salts such as sodium salts, potassium salts, and calcium salts can be listed. In addition, salts such as ammonium salts and amino acid salts can also be listed.

[0082] Potassium 4-methoxysalicylate or ascorbate glucoside are particularly preferred.

[0083] (B) Salt-based whitening agents can be used in one or more forms, and the amount used is arbitrary and varies depending on the salt-based whitening agent used. It cannot be generalized, but it is preferably 0.001 to 3% by mass relative to the total amount of the base agent, and more preferably 0.05 to 2% by mass. By being 0.001% by mass or more, the whitening effect can be further achieved, and by being 3% by mass or less, the usability can be improved.

[0084] The mass ratio of (A) hydrophobically modified polyether polyurethane to (B) salt-type whitening agent is preferably 0.2 to 1, more preferably 0.3 to 0.8. When the mass ratio of (A) hydrophobically modified polyether polyurethane to (B) salt-type whitening agent is 0.3 or more, it can contain (B) salt-type whitening agent without further reducing the viscosity of the base agent, and a more viscous and unique feel can be obtained after peeling. When the mass ratio is 1 or less, it can become a product with better adhesion to the skin and less stickiness after peeling.

[0085] (C) Carboxyvinyl polymers

[0086] The base of the present invention preferably contains (C) carboxyl vinyl polymer.

[0087] (C) Carbopol is a water-soluble vinyl polymer containing carboxyl groups, specifically a polymer with acrylic acid and / or methacrylic acid as the main chain. Commercially available carbopol products include Carbopol 940, Carbopol 941, Carbopol 980, and Carbopol 981 (all manufactured by Lubrizol Corporation).

[0088] The amount of (C) carboxyvinyl polymer is preferably 0.01 to 1% by mass, more preferably 0.05 to 0.8% by mass, and more preferably 0.1 to 0.5% by mass. When the amount of (C) carboxyvinyl polymer is 0.01% by mass or more, the viscosity at rest can be made more sufficient, thus preventing emulsification of the base and ensuring stable preservation. Furthermore, when it is 1% by mass or less, the resulting product has better adhesion to the skin and is less sticky after peeling.

[0089] (D) Polyoxyethylene glycerol fatty acid esters or polyoxyethylene hydrogenated castor oil

[0090] The base of the present invention preferably contains (D) polyoxyethylene glycerol fatty acid ester or polyoxyethylene hydrogenated castor oil.

[0091] (D) It may contain at least one of polyoxyethylene glycerol fatty acid ester or polyoxyethylene hydrogenated castor oil, or both.

[0092] (Polyoxyethylene glycerol fatty acid esters)

[0093] Examples of polyoxyethylene glycerol fatty acid esters include PEG-8 glycerol (mono) isostearate, PEG-20 glycerol (mono) isostearate, PEG-60 glycerol (mono) isostearate, PEG-20 glycerol triisostearate, and PEG-7 glycerol coconut oil fatty acid ester.

[0094] The preferred addition molar number of polyoxyethylene glycerol fatty acid esters is 5 to 20.

[0095] Commercially available polyoxyethylene glycerol fatty acid esters include Emalex GWIS-108 (manufactured by NIHON EMULSION Co., Ltd.) of polyoxyethylene (8) glycerol monoisostearate, Emalex GWIS-120 (same) of PEG-20 glycerol (mono)isostearate, Emalex GWIS-160 (same) of polyoxyethylene (60) glycerol monoisostearate, Emalex GWIS-320 (same) of polyoxyethylene (20) glycerol triisostearate, Cetiol HE (manufactured by Cognis Japan Co., Ltd.) of PEG-7 glycerol coconut oil fatty acid ester, and GLYCEROX HE (CRODA Corporation), etc.

[0096] (Polyoxyethylene hydrogenated castor oil)

[0097] The polyoxyethylene hydrogenated castor oil is preferably hydrophilic, and the average molar number of ethylene oxide addition is preferably 30 to 100, and more preferably 40 to 80.

[0098] Commercially available products of hydrogenated castor oil with polyethylene oxide (PEG) include NIKKOL HCO-30 (PEG-30), NIKKOL HCO-40 (PEG-40), NIKKOL HCO-60 (PEG-60), and NIKKOL HCO-100 (PEG-100) (all manufactured by Nikko Chemicals Co., Ltd.). Among these, PEG-60 hydrogenated castor oil is particularly suitable.

[0099] The amount of component (D) is preferably 0.01 to 1% by mass, more preferably 0.05 to 0.8% by mass, and ideally 0.08 to 0.5% by mass. When the amount of component (D) is 0.01% by mass or more, the light feel upon contact with the skin can be further maintained, and the emulsion stability can also be further improved. Furthermore, when it is 1% by mass or less, the product can have better adhesion to the skin and is less sticky after peeling.

[0100] (E) Higher fatty acids

[0101] The base of the present invention preferably contains (E) higher fatty acids.

[0102] (E) The higher fatty acids are preferably straight-chain or branched fatty acids with 12 to 22 carbon atoms and saturated or unsaturated hydrocarbon groups, and are liquid at room temperature (25°C). Examples include straight-chain fatty acids such as oleic acid, linoleic acid, and linolenic acid, and branched fatty acids such as isostearic acid and isopalmitic acid. Isostearic acid is particularly preferred.

[0103] (E) The amount of higher fatty acids is preferably 0.01 to 3% by mass, more preferably 0.05 to 2% by mass, more preferably 0.1 to 1.5% by mass, and particularly preferably 0.2 to 1% by mass. When the amount of (D) higher fatty acids is 0.01% by mass or more, a product with better adhesion to the skin but without stickiness can be obtained. Furthermore, when it is 3% by mass or less, a product that does not leave the skin feeling slippery after peeling off the sheet can be obtained.

[0104] When (E) the higher fatty acid is isostearic acid, the mass ratio of isostearic acid to (A) hydrophobic modified polyether polyurethane is preferably 0.3 to 1.6. With a mass ratio of isostearic acid to (A) hydrophobic modified polyether polyurethane of 0.3 or more, the product exhibits better adhesion to the skin and is less sticky after peeling. Furthermore, with a ratio of 1.6 or less, the product does not leave the skin feeling slippery after peeling.

[0105] (F) Diglyceride

[0106] The base of this invention may contain (F)-diglyceride, a polyol having three or more hydroxyl groups within one molecule, at a mass percentage of 0.2 to 4% relative to the total amount of the base. By making the (F)-diglyceride range from 0.2 to 4% by mass relative to the total amount of the base, a product with better adhesion to the skin and less stickiness after peeling can be obtained.

[0107] (G) The kinematic viscosity at 25°C is 50 mm. 2 / s or more of polydimethylsiloxane

[0108] The base agent of the present invention may contain 2 to 5% by mass of (G) a kinematic viscosity of 50 mm at 25°C relative to the total amount of the base agent. 2 / s or more of polydimethylsiloxane. By making the amount of component (G) in the range of 2 to 5% by mass relative to the total amount of base agent, a product with better adhesion to the skin and less stickiness after peeling can be made.

[0109] The sheet-like cosmetic of the present invention is made by impregnating a nonwoven fabric with the aforementioned base agent. The nonwoven fabric to be impregnated is not particularly limited and can be a single layer or a laminate of single or mixed fibers selected from natural fibers, regenerated fibers, and synthetic fibers. Examples preferably include single or mixed fibers selected from cellulose fibers (cotton, pulp, lyocell, cupro, rayon, acetate rayon, etc.), acrylic fibers, polyester fibers, polyolefin fibers such as polyethylene and polypropylene, polyurethane fibers, and polyamide fibers. Particularly preferred are mixed fibers of polyester and cellulose fibers, and even more preferably are mixed fibers of cotton, pulp, and polyethylene terephthalate.

[0110] There are no particular restrictions on the thickness of the sheet; it can be selected appropriately according to the purpose. When the sheet is a nonwoven fabric, a thickness of 0.1–10 mm is preferred, and 0.1–5 mm is more preferable. Additionally, the weight per unit area is preferably 10–100 g / m². 2 More preferably 30-80g / m 2 If the weight per unit area is 10g / m² 2 The above will prevent breakage during use. Additionally, the strength is 100g / m³. 2 The following measures can help curb cost increases.

[0111] The shape of the piece is not particularly limited; for example, it can be square, rectangle, oval, circle, heart, semicircle, semi-oval, trapezoid, face shape, etc.

[0112] In the sheet-shaped cosmetic of the present invention, the impregnation method for impregnating the sheet with the base agent can be carried out by known means, such as dripping, spraying, pressurizing, and impregnation processing. One or more sheets are used directly or folded, and the base agent is impregnated therein. The amount of base agent impregnated in the nonwoven fabric is not particularly limited, and can be adjusted appropriately according to the characteristics of the nonwoven fabric and the base agent. Preferably, the impregnation amount is 1.5 to 25 times the mass of the nonwoven fabric.

[0113] The sheets impregnated with the base agent are preferably immediately sealed into a highly airtight container. In particular, it is more preferable to seal them into opaque and airtight bags such as aluminum laminate packaging or packaging with polyethylene terephthalate (PET) coating on the inner surface.

[0114] In addition to the components (A) to (G) mentioned above, the base agent impregnated in the sheet cosmetic of the present invention may also be appropriately combined with components commonly used in cosmetics, pharmaceuticals and other topical skin agents, such as water-based components, oil-based components, powders, etc.

[0115] Examples of water-based components include water and water-soluble components. Examples of water-soluble components include lower alcohols, humectants, and water-soluble polymers (natural, semi-synthetic, synthetic, and inorganic). It should be noted that water-soluble polymers refer to substances not intended for thickening.

[0116] Examples of lower alcohols include ethanol, propanol, butanol, pentanol, and hexanol.

[0117] Examples of moisturizers include glycerin, diethylene glycol, butylene glycol, polyethylene glycol, hexanediol, xylitol, sorbitol, maltitol, chondroitin sulfate, hyaluronic acid, mucopolysaccharide sulfate, calonic acid, determinate collagen, elastin, amino acids, nucleic acids, cholesterol-12-hydroxystearate, sodium lactate, bile salts, dl-pyrrolidone carboxylate, short-chain soluble collagen, diglyceride (EO)PO adduct, prickly pear extract, yarrow extract, and extracts from plants in the Oleaceae family.

[0118] Examples of natural water-soluble polymers include gum arabic, astragalus gum, galactomannan, guar gum, locust bean gum, tamarind seed gum, carob gum, ark tung gum, carrageenan gum, pectin, agar, marmelo, sodium alginate (brown algae extract), starch (rice, corn, potato, wheat), glycyrrhizic acid, and other plant-based water-soluble polymers; xanthan gum, dextran, succinyl polysaccharide, pullulan, and other microbial-based water-soluble polymers; and collagen, casein, albumin, gelatin, and other animal-based water-soluble polymers.

[0119] Examples of semi-synthetic water-soluble polymers include starch-based water-soluble polymers such as carboxymethyl starch and methyl hydroxypropyl starch; cellulose-based water-soluble polymers such as methyl cellulose, nitrocellulose, ethyl cellulose, methyl hydroxypropyl cellulose, hydroxyethyl cellulose, sodium cellulose sulfate, hydroxypropyl cellulose, carboxymethyl cellulose (CMC), crystalline cellulose, and cellulose powder; and alginate-based water-soluble polymers such as sodium alginate and propylene glycol alginate.

[0120] Examples of synthetic water-soluble polymers include ethylene-based water-soluble polymers such as polyvinyl alcohol, polyvinyl methyl ether, and polyvinylpyrrolidone; polyoxyethylene-based water-soluble polymers such as polyethylene glycol 20000, polyethylene glycol 4000000, and polyethylene glycol 600000; copolymer water-soluble polymers such as polyoxyethylene-polyoxypropylene copolymers; acrylic water-soluble polymers such as sodium polyacrylate, ethyl polyacrylate, and polyacrylamide; as well as polyethyleneimine and cationic polymers.

[0121] Examples of inorganic water-soluble polymers include bentonite, magnesium aluminum silicate (VEEGUM), synthetic lithium saponite, lithium montmorillonite, and silicic anhydride.

[0122] As a powder component, both hydrophobic and hydrophilic powders can be used. In addition, not only can the powder itself be hydrophobic or hydrophilic, but the surface of the powder can also be treated to be hydrophobic or hydrophilic.

[0123] Examples of powder components include talc, kaolin, mica, sericite, muscovite, phlogopite, synthetic mica, red mica, biotite, lepidolite, vermiculite, magnesium carbonate, calcium carbonate, aluminum silicate, barium silicate, calcium silicate, magnesium silicate, strontium silicate, tungstate metal salts, magnesium, silicon dioxide, zeolite, barium sulfate, calcined calcium sulfate (calcined gypsum), calcium phosphate, fluorapatite, hydroxyapatite, ceramic powder, metal soaps (zinc myristate, calcium palmitate, aluminum stearate, etc.), polyamide resin powder (nylon powder), polyethylene powder, polymethyl methacrylate powder, polystyrene powder, copolymer resin powder of styrene and acrylic acid, benzoguanamine resin powder, polytetrafluoroethylene powder, cellulose powder, etc. Organic powders, silicone powders such as trimethylsilsesquioxane powder, inorganic powders such as boron nitride; inorganic white pigments such as titanium dioxide and zinc oxide; inorganic red pigments such as iron oxide (red lead) and iron titanate; inorganic brown pigments such as γ-iron oxide; inorganic yellow pigments such as iron oxide yellow and loess; inorganic black pigments such as iron oxide black, carbon black, and low-valent titanium dioxide; inorganic purple pigments such as mango purple and cobalt violet; inorganic green pigments such as chromium oxide, chromium hydroxide, and cobalt titanate; inorganic blue pigments such as ultramarine and Prussian blue; pearlescent pigments such as titanium dioxide coated mica, titanium dioxide coated bismuth oxychloride, titanium dioxide coated talc, colored titanium dioxide coated mica, bismuth oxychloride, and fish scale foil; and metallic powder pigments such as aluminum powder and copper powder.

[0124] As a method for dehydrating these powder components, any method that imparts water repellency as a dehydration treatment method is acceptable. This method can utilize common surface treatment methods such as gas-phase methods, liquid-phase methods, autoclave methods, and mechanochemical methods. There are no particular limitations on the dehydration treatment agent; examples include fatty acid dextrin-treated powders, trimethylsiloxysilicic acid-treated powders, fluorinated trimethylsiloxysilicic acid-treated powders, methylphenylsiloxysilicic acid-treated powders, fluorinated methylphenylsiloxysilicic acid-treated powders, dimethylpolysiloxane, diphenylpolysiloxane, methylphenylpolysiloxane, and other low-to-high viscosity oily polysiloxane-treated powders, colloidal polysiloxane-treated powders, methylhydropolysiloxane-treated powders, fluorinated methylhydropolysiloxane-treated powders, and powders using methyltrichlorosilane and methyltrialkoxysilane. Powders treated with organosilanes such as silanes, hexamethyldisilanes, dimethyldichlorosilanes, dimethyldialkoxysilanes, trimethylchlorosilanes, and trimethylalkoxysilanes or their fluorine-substituted derivatives; powders treated with organically modified silanes such as ethyltrichlorosilanes, ethyltrialkoxysilanes, propyltrichlorosilanes, propyltrialkoxysilanes, hexyltrichlorosilanes, hexyltrialkoxysilanes, long-chain alkyltrichlorosilanes, and long-chain alkyltriethoxysilanes or their fluorine-substituted derivatives; amino-modified polysiloxane powders; fluorine-modified polysiloxane powders; and fluoroalkylphosphoric acid powders.

[0125] The oily component in the base of the sheet cosmetic of the present invention is not particularly limited as long as it is an oily component that can usually be incorporated into cosmetics. Examples include oils, waxes, hydrocarbon oils, higher alcohols, synthetic ester oils, silicone oils, etc.

[0126] Examples of oils and fats include avocado oil, camellia seed oil, evening primrose oil, turtle oil, macadamia nut oil, corn oil, mink oil, olive oil, rapeseed oil, egg yolk oil, sesame oil, peach kernel oil, wheat germ oil, camellia oil, castor oil, flaxseed oil, safflower oil, cottonseed oil, perilla oil, soybean oil, peanut oil, tea seed oil, torreya nut oil, rice bran oil, tung oil, Japanese tung oil, jojoba oil, wheat germ oil, triglycerides, tricaprylic acid glycerides, triisopalmitic acid glycerides, and other liquid oils and fats; cocoa butter, coconut oil, horse fat, hydrogenated coconut oil, palm oil, beef tallow, mutton tallow, hydrogenated beef tallow, palm kernel oil, lard, beef bone fat, Japanese wax kernel oil, hydrogenated oil, beef hoof oil, wood wax, hydrogenated castor oil, and other solid oils and fats.

[0127] Examples of waxes include beeswax, candelilla wax, cotton wax, carnauba wax, bayberry wax, insect wax, whale wax, lignite wax, rice bran wax, lanolin, kapok wax, acetylated lanolin, lanolin oil, sugarcane wax, lanolin fatty acid isopropyl ester, hexyl laurate, hydrogenated lanolin, jojoba wax, hard lanolin, shellac wax, POE lanolin alcohol ether, POE lanolin alcohol acetate rayon, POE cholesterol ether, lanolin fatty acid polyethylene glycol ester, and POE hydrogenated lanolin alcohol ether.

[0128] Examples of hydrocarbon oils include liquid paraffin, terrestrial paraffin, squalene, pterostilbene, paraffin wax, pure terrestrial paraffin, squalene, petrolatum, and microcrystalline wax.

[0129] Examples of higher alcohols include straight-chain alcohols such as lauryl alcohol, cetyl alcohol, stearyl alcohol, betaine alcohol, myristyl alcohol, oleyl alcohol, and cetearyl alcohol; and branched-chain alcohols such as monostearate glyceryl ether (squalyl alcohol), 2-decyltetradecyne alcohol, lanolin alcohol, cholesterol, phytosterol, hexyldodecanool, isostearyl alcohol, and octyldodecanool.

[0130] Examples of synthetic ester oils include isopropyl myristate, hexadecyl octanoate, octyl dodecyl myristate, isopropyl palmitate, butyl stearate, hexyl laurate, myristyl myristate, decyl oleate, hexyl octanoate, cetyl lactate, myristyl lactate, acetylated lanolin, isocetyl stearate, isocetyl stearate, phytosterol 12-hydroxystearate, ethylene glycol di(2-ethylhexanoate), dipentaerythritol fatty acid ester, N-alkyl diol monoisostearate, neopentyl glycol didecanoate, diisostearate malate, glyceryl di-2-heptyl undecanoate, trimethylolpropane tri(2-ethylhexanoate), trimethylolpropane triisostearate, pentaerythritol tetra(2-ethylhexanoate), tri(2-ethylhexanoate) 2-Ethylhexanoate, Trimethylolpropane Triisostearate, Cetyl Alcohol 2-Ethylhexanoate, 2-Ethylhexyl Palmitate, Trimyristic Glyceryl, Tri(2-Heptylundecanoic Acid) Glyceryl, Castor Oil Fatty Acid Methyl Ester, Oleic Acid Ester, Acetylglycerol, 2-Heptylundecyl Palmitate, Diisobutyl Adipate, N-Lauroyl-L-Glutamic Acid-2-OctylDodecyl Adipate, Di(2-Heptylundecyl) Adipate, Ethyl Laurate, Di(2-Ethylhexyl) Sebate, 2-Hexyldecyl Myristate, 2-Hexyldecyl Palmitate, 2-Hexyldecyl Adipate, Diisopropyl Adipate, 2-Ethylhexyl Succinate, Ethyl Acetate, Butyl Acetate, Amyl Acetate, Triethyl Citrate, Crotamiton (C 13 H 17 NO), etc.

[0131] As silicone oils, examples include chain polysiloxanes such as dimethylpolysiloxane, methylphenylpolysiloxane, and methylhydropolysiloxane, other than (F); cyclic polysiloxanes such as decamethylpolysiloxane, dodecylpolysiloxane, and tetramethyltetrahydropolysiloxane; silicone resins and silicone rubbers that form a three-dimensional network structure.

[0132] As an emulsifier, it is combined with one or more of the following: glycerol or polyglycerol fatty acid esters, propylene glycol fatty acid esters, POE sorbitan fatty acid esters, POE sorbitan fatty acid esters, POE fatty acid esters, POE alkyl ethers, POE alkylphenyl ethers, POE·POP alkyl ethers, POE beeswax·lanolin derivatives, alkanolamides, POE propylene glycol fatty acid esters, POE alkylamines, and POE fatty acid amides.

[0133] Other ingredients that can be used in conjunction with the above-mentioned examples include, for example, preservatives (ethylparaben, butylparaben, etc.); anti-inflammatory agents (e.g., glycyrrhizic acid derivatives, glycyrrhetinic acid derivatives, salicylic acid derivatives, juniper alcohol, zinc oxide, allantoin, etc.); whitening agents other than (B) (e.g., strawberry saxifrage extract, arbutin, etc.); various extracts (e.g., Phellodendron bark, Coptis chinensis, Lithospermum erythrorhizon, Paeonia lactiflora, Swertia japonica, birch, sage, loquat, carrot, aloe vera, mallow, gladiolus, grape, coix seed, loofah, lily, saffron, Ligusticum chuanxiong root, ginger root, Forsythia suspensa, red stalk flower root, garlic, etc.). Examples of active ingredients include: chili peppers, Wenzhou mandarin oranges, angelica sinensis, seaweed, etc.; activators (e.g., royal jelly, photosensitizers, cholesterol derivatives, etc.); blood circulation promoters (e.g., vanillinamide nonanoate, benzyl nicotinate, β-butoxyethyl nicotinate, capsaicin, gingerone, cantharides tincture, ichthammol, tannic acid, α-borneol, tocopheryl nicotinate, inositol nicotinate, cyclomandelate, cinnarizine, tolazoline, acetylcholine, verapamil, ciprofloxacin, γ-oryzanol, etc.); antioxidants (e.g., tocopheryl acetate); anti-seborrheic agents (e.g., sulfur, dimethylthiazide, etc.); anti-inflammatory agents (e.g., tranexamic acid, thiotaurine, linoleic acid, etc.); and ultraviolet absorbers. However, this is not limited to these examples.

[0134] Example

[0135] The following examples illustrate the invention in more detail, but the invention is not limited thereto. Unless otherwise specified, all amounts are expressed as percentages by mass.

[0136] (Examples and Comparative Examples)

[0137] The base agent was prepared according to the formulations shown in Tables 1-3 below, and the static viscosity and kinematic viscosity of the prepared base agent were measured under the following conditions. Additionally, a nonwoven fabric (a mixture of fibers formed from cotton, pulp, and polyethylene terephthalate, with a basis weight of 70 g / m²) was used. 2 For sheet cosmetics made by impregnating with a base agent (14.5 times the amount of the base agent), the usability is evaluated based on the following criteria.

[0138] (Stationary viscosity)

[0139] Regarding the prepared base, the viscosity was measured at a shear rate of 0.05 [1 / s] using an MCR300 rheometer (manufactured by Anton-Paar) at 25°C.

[0140] (Kinematic viscosity)

[0141] The base agent was tested using VISCOMETER TVB-15 (manufactured by Toki Sangyo Co., Ltd.), rotors NO.2, NO.3, and NO.4, at a speed of 12 rpm for 1 minute.

[0142] (Whether or not liquid was dripped during patch application)

[0143] A team of 10 professionals evaluated the presence or absence of liquid droplets during the application of the prepared sheet-like cosmetics. The evaluation criteria are as follows.

[0144] <Rating>

[0145] 5 points: Excellent

[0146] 4 points: Good

[0147] 3 points: Average

[0148] 2 points: Poor

[0149] 1 point: Very poor

[0150] <Evaluation Criteria>

[0151] A+: Average score of 4.5 or above

[0152] A: Average score above 3.5 and below 4.5

[0153] B: Average score above 2.5 and below 3.5

[0154] C: Average score below 2.5 points

[0155] (The sense of closeness in the film)

[0156] Ten members of a professional team used the prepared sheet-like cosmetic for 10 minutes to evaluate its adherence. The evaluation criteria are as follows.

[0157] <Rating>

[0158] 5 points: Excellent

[0159] 4 points: Good

[0160] 3 points: Average

[0161] 2 points: Poor

[0162] 1 point: Very poor

[0163] <Evaluation Criteria>

[0164] A+: Average score of 4.5 or above

[0165] A: Average score above 3.5 and below 4.5

[0166] B: Average score above 2.5 and below 3.5

[0167] C: Average score below 2.5 points

[0168] (The sticky feeling after peeling off the film)

[0169] Ten members of a professional team used the prepared sheet-like cosmetic for 10 minutes and evaluated the stickiness felt after removing the sheet. The evaluation criteria are as follows.

[0170] <Rating>

[0171] 5 points: Excellent

[0172] 4 points: Good

[0173] 3 points: Average

[0174] 2 points: Poor

[0175] 1 point: Very poor

[0176] <Evaluation Criteria>

[0177] A+: Average score of 4.5 or above

[0178] A: Average score above 3.5 and below 4.5

[0179] B: Average score above 2.5 and below 3.5

[0180] C: Average score below 2.5 points

[0181] (Is there any stickiness after peeling off the film?)

[0182] Ten members of a professional team used the prepared sheet-like cosmetic for 10 minutes to evaluate whether or not a sticky residue remained after the sheet was removed. The evaluation criteria are as follows.

[0183] <Rating>

[0184] 5 points: Excellent

[0185] 4 points: Good

[0186] 3 points: Average

[0187] 2 points: Poor

[0188] 1 point: Very poor

[0189] <Evaluation Criteria>

[0190] A+: Average score of 4.5 or above

[0191] A: Average score above 3.5 and below 4.5

[0192] B: Average score above 2.5 and below 3.5

[0193] C: Average score below 2.5 points

[0194] The formulations and evaluation results are shown in Tables 1-3. It should be noted that the main commercially available product names for the ingredients shown in the tables are as follows.

[0195] • PEG-240 / HDI copolymer bis-decyltetradecyl alcohol polyether-20 ether: ADEKA NOL GT-700 (manufactured by ADEKA Corporation) purity 99.95% by mass

[0196] • Carbopol: Carbopol 980 (manufactured by Nikko Chemicals Co., Ltd.)

[0197] • PEG-20 glyceryl isostearate: Emalex GWIS-120 (manufactured by NIHON EMULSION Co., Ltd.)

[0198] • PEG-60 hydrogenated castor oil: NIKKOL HCO-60 (manufactured by Nikko Chemicals Co., Ltd.)

[0199] • Polydimethylsiloxane*1: Silicon FK-96A-6T (manufactured by Shin-Etsu Silicone)

[0200] • Polydimethylsiloxane*2: Methyl polysiloxane 100CS (kinematic viscosity of 100 mmHg at 25°C) 2 / s)

[0201] • Isostearic acid: Isostearic acid SX (manufactured by Kokyu Alcohol Kogyo Co., Ltd.)

[0202] [Table 1]

[0203]

[0204] [Table 2]

[0205]

[0206] [Table 3]

[0207]

[0208] Table 1 shows that the sheet cosmetics of Examples 1 and 2 do not drip when applied to the skin, have good adhesion, and exhibit excellent stickiness after peeling. On the other hand, the sheet cosmetics of Comparative Examples 1 and 2, which do not contain (A) hydrophobically modified polyether polyurethane, drip significantly when applied to the skin, and also lack adhesion and a sticky feel after peeling. Although Examples 3 and 4 incorporate ascorbate glucoside as a salt-type whitening agent, they, like Examples 1 and 2, do not drip when applied to the skin, have good adhesion, and exhibit excellent stickiness after peeling. On the other hand, the sheet cosmetic of Comparative Example 3, which does not contain (A) hydrophobically modified polyether polyurethane, drips significantly when applied to the skin, and also lacks adhesion and a sticky feel after peeling.

[0209] Table 2 shows Examples 5-8, which are examples of adding isostearic acid to the formulation of Example 1; Examples 9 and 10 are examples of reducing the amount of (A) hydrophobic modified polyether polyurethane. All of them do not drip even when applied to the skin, have excellent viscosity after peeling, and exhibit high adhesion, remaining non-sticky even after peeling. Furthermore, due to their high static viscosity and low kinematic viscosity, they can be products that do not leave the skin slippery after peeling.

[0210] Table 3 shows that Example 11 is an example of reducing the amount of surfactant, Examples 12 and 13 are examples of adding polyoxyethylene hydrogenated castor oil, and Example 14 is an example of adding a kinematic viscosity of 50 mm. 2 Examples of polydimethylsiloxane with a concentration of / s or higher, Example 15 is an example with the addition of diglycerides, and Example 16 is an example with the addition of dipropylene glycol. However, they all do not drip even when attached to the skin, have excellent stickiness after peeling, and have high adhesion, and are not sticky even after peeling.

Claims

1. A sheet-like cosmetic product made by impregnating a nonwoven fabric with a base agent, said base agent comprising at least (A) a hydrophobically modified polyether polyurethane, (B) a salt-type whitening agent, and (E) isostearic acid, wherein the mass ratio of (E) isostearic acid to (A) hydrophobically modified polyether polyurethane is 0.3 to 1.

6. The (B) salt-type whitening agent is potassium 4-methoxysalicylate or ascorbate glucoside.

2. The sheet-like cosmetic according to claim 1, wherein, The mass ratio of the (A) hydrophobically modified polyether polyurethane to the (B) salt-type whitening agent is 0.2 to 1.

3. The sheet-like cosmetic according to claim 1 or 2, further comprising (C) a carboxyl vinyl polymer.

4. The sheet-like cosmetic according to claim 1 or 2, further comprising at least one of (D) polyoxyethylene glycerol fatty acid ester or polyoxyethylene hydrogenated castor oil.

5. The sheet-like cosmetic according to claim 1 or 2, wherein, The content of (E) isostearic acid is 0.01 to 3% by mass.

6. The sheet-like cosmetic according to claim 1 or 2, wherein, The hydrophobically modified polyether polyurethane (A) is a PEG-240 / HDI copolymer bis-decyltetradecyl alcohol polyether-20 ether.

7. The sheet-like cosmetic according to claim 4, wherein, The (D) polyoxyethylene glycerol fatty acid ester is PEG-20 glycerol (mono) isostearate.

8. The sheet-like cosmetic according to claim 4, wherein, The (D) polyoxyethylene hydrogenated castor oil is PEG-60 hydrogenated castor oil.

9. The sheet-like cosmetic according to claim 1 or 2, further comprising 0.2 to 4% by mass of (F)-diglyceride relative to the total amount of the base agent.

10. The sheet-like cosmetic according to claim 1 or 2, further comprising (G) a kinematic viscosity of 50 mmHg at 25°C, at 2-5% by mass relative to the total amount of the base agent. 2 Polydimethylsiloxane with a strength of / s or higher.

11. The sheet-like cosmetic according to claim 1 or 2, wherein, The nonwoven fabric comprises polyester fibers and cellulose fibers.

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