KR101786449B1 - Cleansing sheet - Google Patents

Abstract

The present invention provides a cleansing sheet which is excellent in storage stability of a cleansing emulsified composition and exhibits remarkably excellent cleansing power despite its relatively low viscosity. The cleansing sheet according to the present invention comprises a sheet base material and a cleansing emulsion composition impregnated in the sheet base material, wherein the cleansing emulsion composition comprises a nonionic surfactant, an acrylic acid / methacrylic acid alkyl copolymer, Wherein the nonionic surfactant is at least one member selected from the group consisting of diisostearic acid polyoxyethylene glyceryl, monoisostearic acid polyoxyethylene glyceryl and polyoxyethylene hardened castor oil, and the nonionic surfactant is at least one member selected from the group consisting of 25 Lt; 0 > C or less.

Description

Cleansing Sheet {CLEANSING SHEET}

The present invention relates to a cleansing sheet in which a sheet base material is impregnated with an emulsifying composition for cleansing.

Cosmetic compositions for cleansing using a composition for cleansing to remove make-up and the like are widely known. In recent years, the use of a cleansing sheet in which a composition for cleansing is impregnated into a sheet substrate has been increasing in order to quickly and easily remove make-up. As the composition for cleansing, there are a liquid composition and an emulsifying composition which are not emulsions (emulsions).

The above-mentioned cleansing sheet cosmetics are disclosed, for example, in Patent Documents 1 to 5 below.

In the following Patent Document 1, a sheet-like cleansing material obtained by impregnating a nonwoven fabric with an oil-in-water (oil-in-water) emulsion composition is disclosed. The water-in-oil type emulsion composition comprises (A) 1 to 25 mass% of a water-soluble compound (a) having a polyoxypropylene structure with a propylene oxide addition mole number of 3 or more and an alkyl group having 4 or more carbon atoms and / or a polyoxyethylene structure, (B) an oil phase containing at least 50 mass% of an oil agent (b) having a boiling point of 160 to 300 ° C at 1013.25 hPa; (C) And 0.01 to 1% by mass of a water-based thickener having a hydrophobic portion (hydrophobic portion). In the water-in-oil type emulsion composition, the mass ratio ((A): (B)) of the water phase to the water phase is from 97: 3 to 40:60.

The following Patent Document 2 discloses a cleansing material in which a sheet base material is impregnated with an emulsion cosmetic having a viscosity at 25 ° C of 200 to 4000 mPa · s and a viscosity at 50 ° C of 100 to 2000 mPa · s. Patent Document 2 discloses an emulsion cosmetic comprising 10 to 80% by weight of an emulsion, 10 to 80% by weight of water and 0.5 to 10% by weight of a surfactant as the emulsion cosmetic.

In the example of Patent Document 2, an emulsion cosmetic having a relatively high viscosity and a viscosity at 25 ° C of 1100 to 1500 mPa · s is described. In the comparative example of Patent Document 2, an emulsion cosmetic having a relatively low viscosity and a viscosity at 25 캜 of 150 mPa 가 is disclosed. However, in Patent Document 2, it is described that when the viscosity at 25 ° C is 150 mPa · s, the liquid (liquid) stability and the stability of the impregnated sheet deteriorate.

Patent Document 3 described below discloses a sheet-like cleansing cosmetic composition in which an emulsion composition having a viscosity at 25 캜 of 200 mPa s or less is impregnated in a sheet substrate. The emulsion composition comprises (A) 0.1 to 3 mass% of a phospholipid, (B) 0.1 to 15 mass% of a liquid oil fraction, (C) 1 to 25 mass% of a polyhydric alcohol, and (D) .

In the example of Patent Document 3, an emulsion composition having a relatively low viscosity is described, but the stability of the emulsion composition is not specifically described.

The following patent document 4 discloses a sheet-like cleansing material impregnated with a nonwoven fabric in an underwater type emulsion composition. The water-in-oil type emulsion composition comprises 0.01 to 0.5 mass% of an aqueous thickener, 5 to 30 mass% of an emulsion having a boiling point of 160 to 300 ° C, and water.

Patent Document 5 below discloses a cleansing sheet in which a liquid base cleansing composition is impregnated in a sheet base. The liquid cleansing composition includes (A) an emulsion having a viscosity at 25 ° C of 1000 to 50000 mPa · s as an oil component, and (B) an emulsion having a viscosity at 25 ° C. of 20 mPa · s or less. The total content of the component (A) and the component (B) in the entire oily component is 30 mass% or more. The mass ratio ((B) / (A)) of the component (A) and the component (B) is 1 to 5. In Patent Document 5, it is described that the liquid cleansing composition may contain (C) 3 to 30% by mass of a nonionic surfactant.

Japanese Patent Application Laid-Open No. 2005-239561 Japanese Patent Application Laid-Open No. 2001-302450 Japanese Patent Application Laid-Open No. 2003-183126 Japanese Patent Application Laid-Open No. 2005-145872 Japanese Patent Application Laid-Open No. 2006-306780

In the above cleansing sheet, an emulsion is frequently blended to improve the cleansing effect. However, when the above-mentioned cleansing composition is emulsified to stably form an emulsion, the cleansing power may be lowered even though the emulsion is blended.

In addition, when the composition for cleansing is in an emulsified state, the viscosity of the cleansing composition increases, and it is difficult to impregnate the sheet base material uniformly with the cleansing composition. On the other hand, if the viscosity of the cleansing composition is lowered, the storage stability of the cleansing composition may be remarkably lowered.

As described in Patent Documents 1 to 5, various compositions for cleansing which are conventionally impregnated on a sheet base are known. However, in conventional cleansing compositions, it has not been possible to satisfy low viscosity for achieving uniform impregnation, high storage stability, and high performance of cleansing power.

It is an object of the present invention to provide a cleansing emulsified composition which is excellent in storage stability of a cleansing emulsified composition despite relatively low viscosity at 25 DEG C and has a relatively low viscosity of the cleansing emulsified composition, The present invention provides a cleansing sheet capable of exhibiting a remarkably excellent cleansing power.

The cleansing sheet according to the present invention comprises a sheet base material and a cleansing emulsion composition impregnated in the sheet base material, wherein the cleansing emulsion composition comprises a nonionic surfactant, an acrylic acid / methacrylic acid alkyl copolymer, Wherein the nonionic surfactant is at least one member selected from the group consisting of diisostearic acid polyoxyethylene glyceryl, monoisostearic acid polyoxyethylene glyceryl and polyoxyethylene hardened castor oil, and the nonionic surfactant is at least one member selected from the group consisting of 25 Lt; 0 > C or less.

It is preferable that the emulsion is at least one of hydrocarbon oil and silicone oil. The nonionic surfactant is preferably polyoxyethylene glyceryl diisostearate.

Wherein the content of the nonionic surfactant selected from the group consisting of diisostearic acid polyoxyethylene glyceryl, monoisostearic acid polyoxyethylene glyceryl and polyoxyethylene hydrogenated castor oil is 100% by mass of the cleansing emulsion composition, The content of the acrylic acid / methacrylic acid alkyl copolymer is 0.01 mass% or more and 0.2 mass% or less, and the content of the emulsion is 1 mass% or more and 25 mass% or less, preferably 0.1 mass% or more and 5 mass% Do.

It is preferable that the emulsifying composition for cleansing further contains a polyhydric alcohol.

The cleansing sheet according to the present invention comprises a sheet base material and a cleansing emulsion composition impregnated in the sheet base material, wherein the cleansing emulsion composition comprises a nonionic surfactant, an acrylic acid / methacrylic acid alkyl copolymer, Wherein the nonionic surfactant is at least one member selected from the group consisting of polyoxyethylene glyceryl diisostearate, polyoxyethylene glyceryl monoisostearate and polyoxyethylene hardened castor oil, and the emulsifying composition for cleansing Has a viscosity at 25 占 폚 of not more than 1000 mPa 占 퐏, so that the storage stability of the emulsified composition for cleansing can be improved despite the comparatively low viscosity at 25 占 폚 of the emulsified composition for cleansing. In addition, since the viscosity of the above-mentioned cleansing emulsion composition is comparatively low, the cleansing emulsion composition can be uniformly impregnated in the sheet base material, so that the cleansing sheet according to the present invention can exert a remarkably excellent cleansing power.

Hereinafter, the present invention will be described in detail.

The cleansing sheet according to the present invention comprises a sheet substrate and an emulsified composition for cleansing impregnated in the sheet substrate. In the cleansing sheet according to the present invention, the composition impregnated in the sheet substrate is an emulsified composition.

The cleansing sheet according to the present invention contains (A) a nonionic surfactant, (B) an acrylic acid / methacrylic acid alkyl copolymer, and (C) an emulsion. In the cleansing sheet according to the present invention, the nonionic surfactant (A) is at least one member selected from the group consisting of polyoxyethylene glyceryl diisostearate, polyoxyethylene glyceryl monoisostearate, and polyoxyethylene hardened castor oil. In the cleansing sheet according to the present invention, the viscosity of the emulsified composition for cleansing at 25 캜 is 1000 mPa s or less. The viscosity of the emulsified composition for cleansing at 25 캜 is relatively low.

In the present invention, the above-described constitution is employed, and the viscosity of the above-mentioned cleansing emulsion composition impregnated in the sheet substrate is 1000 mPa s or less at 25 캜, so that the emulsifying composition for cleansing can be easily and uniformly . For example, when the viscosity of the composition at 25 캜 exceeds 1000 mPa · s, the amount of the cleansing composition to be impregnated with the cleansing composition tends to vary depending on the portion of the sheet substrate in the cleansing sheet. By contrast, when the viscosity of the cleansing emulsified composition at 25 ° C is 1000 mPa · s or less, the impregnation amount of the cleansing emulsified composition can be made uniform throughout the sheet substrate in the cleansing sheet.

Further, in the present invention, since the above-mentioned cleansing emulsified composition has the specific composition described above, the storage stability of the cleansing emulsified composition can be improved despite the comparatively low viscosity at 25 캜 of the cleansing emulsified composition. In particular, in the composition containing (C) an emulsion, (A) the nonionic surfactant is selected from the group consisting of diisostearic acid polyoxyethylene glyceryl, monoisostearic acid polyoxyethylene glyceryl and polyoxyethylene hardened castor oil At least one species contributes greatly to improvement of storage stability.

Further, in the present invention, since the above-mentioned emulsified composition for cleansing has the above specific composition, the cleansing power can be increased. In addition, uniformly impregnating the sheet base material with the above-mentioned emulsified composition for cleansing contributes greatly to enhance the cleansing force effectively.

The viscosity of the emulsified composition for cleansing at 25 캜 is 1000 mPa s or less. The viscosity of the above-mentioned emulsified composition for cleansing at 25 캜 is preferably 800 mPa s or less. If the viscosity is less than the upper limit, the cleansing composition is more uniformly impregnated into the sheet substrate. The lower limit of the viscosity is not particularly limited. The viscosity of the emulsified composition for cleansing at 25 캜 is preferably 150 mPa s or more, and more preferably 200 mPa s or more. When the viscosity is at least the lower limit, the storage stability is further enhanced.

The viscosity was measured using a viscometer at 25 DEG C under a condition of a No. 2 rotor at a rotation speed of 30 rpm and a rotation time of 1 minute. As the above-mentioned viscometer, a TV-22 type viscometer manufactured by Toki-San Co., Ltd. can be used.

The cleansing sheet according to the present invention is preferably a cosmetic, a quasi-drug, or a cleansing sheet used as a medicine. The emulsifying composition for cleansing preferably contains (D) a polyhydric alcohol. The emulsifying composition for cleansing preferably contains (E) ethanol. The emulsifying composition for cleansing generally includes water.

Hereinafter, the components usable for the cleansing sheet and the emulsion composition for cleansing according to the present invention, and the sheet substrate will be described in detail.

((A) nonionic surfactant)

When the above-mentioned emulsifying composition for cleansing contains (A) a nonionic surfactant, the storage stability is significantly increased and the cleansing power is also effectively increased. Examples of the nonionic surfactant include polyoxyethylene fatty acids, polyoxyethylene alkyl ethers, polyoxyethylene sorbitan fatty acid esters, polyoxyethylene glycerin fatty acid esters, monoglycerin fatty acid esters, polyglycerin fatty acid esters, polyoxyethylene fatty acid amides, Polyoxyethylene sorbitol beeswax, polyoxyethylene hydrogenated castor oil, polyoxyethylene castor oil, polyoxyethylene lanolin, polyoxyethylene lanolin alcohol, polyoxyethylene sorbitol lanolin and dimethyl lauryl amine oxide, and the like. .

Of these, at least one of polyoxyethylene glycerin fatty acid ester and polyoxyethylene hardened castor oil is used as the nonionic surfactant in the present invention.

Specific examples of the polyoxyethylene glycerin fatty acid esters include polyoxyethylene (capryl / capric acid) glyceryl, polyoxyethylene palm oil fatty acid glycerin, monooleic acid polyoxyethylene glyceryl, monomyristic acid polyoxyethylene glycerol Polyoxyethylene glyceryl monostearate, polyoxyethylene glyceryl monoisostearate, polyoxyethylene glyceryl diisostearate, polyoxyethylene glyceryl triisostearate, and the like.

Among them, in the present invention, when polyoxyethylene glycerin fatty acid ester is used, at least one of polyoxyethylene glyceryl monoisostearate and polyoxyethylene glyceryl diisostearate is used.

Accordingly, in the present invention, (A) the nonionic surfactant is at least one member selected from the group consisting of polyoxyethylene glyceryl diisostearate, polyoxyethylene glyceryl monoisostearate, and polyoxyethylene hardened castor oil. The nonionic surfactant (A) may be used alone or in combination of two or more.

The above-mentioned emulsifying composition for cleansing may contain (A) diisostearic acid polyoxyethylene glyceryl as the nonionic surfactant, may contain polyoxyethylene glyceryl monoisostearate, and may contain polyoxyethylene hardened castor oil .

From the viewpoint of further enhancing storage stability, the nonionic surfactant (A) is preferably at least one of diisostearic acid polyoxyethylene glyceryl and polyoxyethylene hardened castor oil, and is preferably diisostearic acid polyoxyethylene glyceryl Particularly preferred.

From the viewpoint of further increasing the cleansing power, the nonionic surfactant (A) is preferably at least one of diisostearic acid polyoxyethylene glyceryl and monoisostearic acid polyoxyethylene glyceryl, more preferably diisostearic acid polyoxyethylene glyceryl .

The number of moles of ethylene oxide added in the polyoxyethylene glycerin fatty acid ester is not particularly limited, but is preferably 2 or more, more preferably 4 or more, preferably 100 or less, and even more preferably 90 or less. When the number of moles of ethylene oxide added in the polyoxyethylene glycerin fatty acid ester is not less than the lower limit and not more than the upper limit, the storage stability of the cleansing emulsion composition is further improved.

A commercially available product such as the polyoxyethylene glycerin fatty acid ester may be used. "Browon RGL-5MISE" (number of moles of ethylene oxide added: 5) and "RGL-8MISE" (number of moles of ethylene oxide added: 8), which are commercially available from Aoki Yuchi Kogyo Co., are commercially available as commercial products of polyoxyethylene glyceryl monoisostearate, , "RGL-10MISE" (ethylene oxide addition mole number: 10), "RGL-20MISE" (ethylene oxide addition mole number: 20) and "GWIS-108" , EMALEX GWIS-120 (number of moles of ethylene oxide added: 20) and EMALEX GWIS-160 (number of moles of ethylene oxide added: 60). GWIS-210 "(number of moles of ethylene oxide added: 10)," EMALEX GWIS-220 "(number of moles of ethylene oxide added: 20) and" GWIS- EMALEX GWIS-230 "(ethylene oxide addition mole number: 30) and" EMALEX GWIS-260 "(ethylene oxide addition mole number: 60).

A commercially available product may be used as the polyoxyethylene hardened castor oil. HC-20 "(number of moles of ethylene oxide added: 20)," HC-40 "(number of moles of ethylene oxide added: 40), and a product of" Nippon Oil Co., HC-100 "(number of moles of ethylene oxide added: 100).

The number of moles of ethylene oxide added in the polyoxyethylene glyceryl diisostearate and polyoxyethylene glyceryl monoisostearate is not particularly limited but is preferably 10 or more, more preferably 20 or more, and preferably 80 or less , And more preferably 60 or less. When the number of moles of ethylene oxide added in the polyoxyethylene glyceryl diisostearate and the polyoxyethylene glyceryl monoisostearate is lower than or equal to the lower limit and lower than or equal to the upper limit, the storage stability of the cleansing emulsion composition is further improved.

The number of moles of ethylene oxide added in the polyoxyethylene hardened castor oil is not particularly limited, but is preferably 20 or more, more preferably 30 or more, and preferably 100 or less. When the molar number of addition of ethylene oxide in the polyoxyethylene hardened castor oil is not lower than the lower limit and not higher than the upper limit, the storage stability of the emulsifying composition for cleansing is further improved.

The HLB value of the nonionic surfactant (A) is preferably 7 or more, more preferably 8 or more, preferably 16 or less, more preferably 15 or less. When the HLB value is at least the lower limit, the storage stability is further improved. If the HLB value is less than the upper limit, the cleansing force is further increased.

(A) at least one nonionic surfactant selected from the group consisting of diisostearic acid polyoxyethylene glyceryl, monoisostearic acid polyoxyethylene glyceryl and polyoxyethylene hydrogenated castor oil in 100% by mass of the aforementioned emulsifying composition for cleansing (Content of polyoxyethylene glyceryl diisostearate, polyoxyethylene glyceryl monoisostearate and polyoxyethylene hardened castor oil) is preferably 0.1% by mass or more, more preferably 0.3% by mass or more, Is not more than 5% by mass, more preferably not more than 3% by mass. When the content of the nonionic surfactant (A) is lower than the lower limit described above, the cleansing power is further increased. If the content of the nonionic surfactant (A) is not more than the upper limit, the storage stability becomes better and the viscosity of the emulsifying composition for cleansing can be lowered to a low degree.

The content of the polyoxyethylene glyceryl diisostearate is preferably 0.1% by mass or more, more preferably 0.3% by mass or more, further preferably 5% by mass or less, still more preferably 5% by mass or less, Is not more than 3% by mass. When the content of polyoxyethylene glyceryl diisostearate is lower than the lower limit described above, the cleansing force is further increased. If the content of the polyoxyethylene glyceryl diisostearate is not more than the upper limit, the storage stability becomes even better, and the viscosity of the emulsified composition for cleansing can be easily lowered.

((B) acrylic acid-alkyl methacrylate copolymer)

By including the acrylic acid / methacrylic acid copolymer (B) in the cleansing emulsified composition, the storage stability can be improved and the cleansing power of the cleansing sheet can be enhanced even if the viscosity of the cleansing emulsified composition is low. That is, by using the acrylic acid / methacrylic acid copolymer (B), high storage stability and high cleansing power can be achieved. The acrylic acid / methacrylic acid (B) alkyl copolymer may be used alone, or two or more kinds thereof may be used in combination.

(B) acrylic acid-methacrylic acid alkyl copolymer may be used. (B) acrylic acid / methacrylic acid alkyl copolymers commercially available from LUBRIZOL under the trade names of "PEMULEN TR-1", "PEMULEN TR-2", " 1382 " and " ETD2020 ".

The content of the acrylic acid / methacrylic acid alkyl copolymer (B) in 100% by mass of the cleansing emulsion composition is preferably 0.01% by mass or more, more preferably 0.015% by mass or more, and preferably 0.2% More preferably, it is 0.15 mass% or less. When the content of the (B) acrylic acid / methacrylic acid alkyl copolymer is lower than or equal to the lower limit, the storage stability and the cleansing power are further increased. When the content of the (B) acrylic acid / methacrylic acid alkyl copolymer is less than the upper limit, the cleansing power is further improved.

((C) emulsion)

The cleansing power of the cleansing emulsified composition can be effectively increased by including the emulsifying agent (C). Further, in the present invention, in order to stably formulate an emulsion, the composition for cleansing is an emulsifying composition. (C) The emulsion is different from (A) the nonionic surfactant, (B) is different from the acrylic acid / methacrylic acid alkyl copolymer, and (D) is different from the polyhydric alcohol.

(C) emulsions include hydrocarbon oils, silicone oils, oils, higher fatty acids, fatty acid esters and higher alcohols. The emulsions (C) may be used alone or in combination of two or more.

The hydrocarbon flow path is, for example, selected from the group consisting of hard isoparaffin, hard flowing isoparaffin, synthetic squalane, vegetable squalane, squalane, ceresin, paraffin, liquid paraffin, floating isoparaffin, microcrystalline wax, polyethylene powder (polyethelene powder) Wax, and petrolatum. The hydrocarbon oil may be used alone or in combination of two or more.

From the viewpoint of effectively increasing the cleansing power, it is preferable that the hydrocarbon oil is at least one selected from the group consisting of light isoparaffin, light flowing isoparaffin, liquid paraffin and liquid isoparaffin.

The silicone oil may be straight silicone, modified silicone, or cyclic silicone. Examples of the straight silicone include octamethyltrisiloxane, tetradecamethylhexasiloxane, methylpolysiloxane, highly polymerized methylpolysiloxane, methylphenylpolysiloxane and methylhydrogenpolysiloxane. Examples of the modified silicone include alcohol-modified silicone, alkyl-modified silicone, amino-modified silicone, polyether-modified silicone and epoxy-modified silicone. Examples of the cyclic silicone include methylcyclopolysiloxane, octamethylcyclotetrasiloxane, decamethylcyclopentasiloxane, and dodecamethylcyclohexasiloxane. The silicone oil may be used alone or in combination of two or more.

From the viewpoint of effectively increasing the cleansing force, the silicone oil is preferably cyclic silicone.

Examples of the oil-retaining furnace include sunflower oil, cottonseed oil, soybean oil, olive oil, palm oil, castor oil, jojoba oil, camellia oil and mink oil. The above-mentioned fat may be used alone, or two or more types may be used in combination.

Examples of the higher fatty acids include lauric acid, myristic acid, palmitic acid, stearic acid, oleic acid, behenic acid, undecylenic acid, lanolinic acid and isostearic acid. The above-mentioned higher fatty acids may be used alone, or two or more kinds may be used in combination.

Examples of the fatty acid esters include fatty acid esters such as ethyl oleate, isopropyl myristate, isopropyl palmitate, myristyl myristate, cetyl palmitate, oleyl oleate, octyldodecyl myristate, octyldodecyl oleate, Ethyl isostearate, cetyl 2-ethylhexanoate, cetostearyl 2-ethylhexanoate, isocetyl octanoate, isostearyl octanoate, isopropyl iso stearate, isocetyl iso-stearate, octyldodecyl isostearate, (Capryl / capric acid) propylene glycol, propylene glycol isostearate, dicapric acid neopentyl glycol, di (ethylene glycol) propionate, di (ethylene glycol) Glyceryl ethylhexanoate, glyceryl triisopalmitate and pentaerythritol tetra-2-ethylhexanoate. There. The fatty acid ester may be used alone or in combination of two or more.

Examples of the higher alcohol include lauryl alcohol, myristyl alcohol, cetyl alcohol, stearyl alcohol, oleyl alcohol, lanolin alcohol, behenyl alcohol, cetostearyl alcohol, octyldecanol and decyltetradecanol . The higher alcohol may be used alone, or two or more may be used in combination.

From the standpoint of suppressing skin irritation and further enhancing the cleansing power, (C) the emulsifiable concentrate is preferably at least one of hydrocarbon oil and silicone oil, and is preferably both of hydrocarbon oil and silicone oil. Therefore, the emulsifying composition for cleansing preferably contains hydrocarbon oil and silicone oil.

The content of the emulsion (C) in 100% by mass of the cleansing emulsion composition is preferably 1% by mass or more, more preferably 3% by mass or more, preferably 25% by mass or less, more preferably 20% to be. When the content of the emulsion (C) is lower than the lower limit described above, the cleansing power is further increased. When the content of the emulsion (C) is not more than the upper limit, the storage stability becomes even better.

The total content of the hydrocarbon oil and the silicone oil in 100% by mass of the cleansing emulsion composition is preferably 1% by mass or more, more preferably 3% by mass or more, preferably 25% by mass or less, still more preferably 20% Or less. The content of the hydrocarbon oil in 100% by mass of the cleansing emulsion composition is preferably 0.5% by mass or more, more preferably 1.5% by mass or more, preferably 20% by mass or less, and more preferably 15% by mass or less. The content of the silicone oil in 100% by mass of the cleansing emulsion composition is preferably 0.5% by mass or more, more preferably 1.5% by mass or more, preferably 20% by mass or less, and still more preferably 15% by mass or less. When the total content of the hydrocarbon oil and the silicone oil, the content of the hydrocarbon oil, and the content of the silicone oil are respectively equal to or more than the above lower limit, the cleansing force is further increased. When the total content of the hydrocarbon oil and the silicone oil, the content of the hydrocarbon oil, and the content of the silicone oil are respectively less than the above-mentioned upper limit, the storage stability is further improved.

((D) a polyhydric alcohol)

The above-mentioned cleansing emulsified composition contains (D) a polyhydric alcohol, so that an effect of alleviating skin irritation can be obtained.

Examples of the polyhydric alcohol (D) include polyhydric alcohols such as ethylene glycol, diethylene glycol, polyethylene glycol, propylene glycol, dipropylene glycol, polypropylene glycol, glycerin, diglycerin, polyglycerol, Glycol, sorbitol, maltitol, mannitol, 1,2-butanediol, 1,2-pentanediol, 1,2-hexanediol, 1,2-heptanediol, , 2-decanediol, and the like. (D) The polyhydric alcohol may be used alone or in combination of two or more.

The content of the polyhydric alcohol (D) in 100% by mass of the cleansing emulsion composition is preferably 0% by mass or more (including unused), more preferably 0.5% by mass or more, and preferably 25% And preferably 20 mass% or less. If the content of the polyhydric alcohol (D) is lower than the lower limit described above, the skin irritation is further alleviated. When the content of the polyhydric alcohol (D) is less than the upper limit, the feeling of exfoliation after cleansing becomes better.

((E) ethanol)

The emulsifying composition for cleansing preferably contains (E) ethanol. When the emulsifying composition for cleansing contains (E) ethanol, the preservative effect is effectively increased.

From the standpoint of further enhancing the preservative effect, the content of (E) ethanol is preferably higher. On the other hand, from the viewpoint of further suppressing skin irritation, it is preferable that the content of (E) ethanol is small. Particularly, in a cleansing sheet, skin irritation may become a big problem in use.

The content of (E) ethanol in 100 mass% of the cleansing emulsion composition is preferably 0 mass% or more (including unused), more preferably 2 mass% or more, preferably 10 mass% or less By mass is 8% by mass or less. When the content of (E) ethanol is at least the lower limit described above, the preservative effect is further improved. (E) If the content of ethanol is less than the upper limit, skin irritation is further suppressed.

(water)

Water is used as the remainder of the emulsifying composition for cleansing. Water is preferably water commonly used in cosmetics. Water is not particularly limited, but may include purified water, tap water, and ion-exchanged water. Water is preferably purified water.

(Other components)

The emulsifying composition for cleansing may contain at least one of an amphoteric surfactant, a cationic surfactant, an anionic surfactant, an antiseptic, a refreshing agent, an antioxidant, a metal blocker, a vitamin, And other components such as a coloring agent and the like. These other components may be used alone, or two or more of them may be used.

Examples of the amphoteric surfactant include amino acid-type amphoteric surfactants and betaine-type amphoteric surfactants. Examples of the amino acid-type amphoteric surfactants include glycine-type amphoteric surfactants and aminopropionic acid-type amphoteric surfactants. Examples of the betaine-type amphoteric surfactant include aminoacetic acid betaine-type amphoteric surfactants and sulfobetaine-type amphoteric surfactants.

Examples of the cationic surfactant include alkylamine salts and fatty acid amidoamines. Examples of the alkylamine salt include lauryltrimethylammonium chloride, stearyltrimethylammonium chloride and distearyldimethylammonium chloride. Examples of the fatty acid amidoamine include myristyl dimethylaminoethylamide and diethylaminopropylamide stearate.

Examples of the anionic surfactant include alkyl sulfates, polyoxyethylene alkyl ether sulfates, alpha -olefin sulfonates, N-acyl methyl taurine salts, sulfosuccinic acid alkyl salts, sulfosuccinic acid polyoxyethylene alkyl salts, monoalkyl phosphate esters Salts such as polyoxyethylene alkyl ether phosphate ester, N-acyl sarcosinate, N-acyl-N-methyl-β-alanine salt, N-acylglutamate, N-acylglycine salt and alkyl ether glycol acetate, .

Examples of the preservative include paraoxybenzoic acid ester (methylparaben), phenoxyethanol, sodium benzoate, potassium sorbate, and polyaminopropylbiguanide.

(Sheet material)

The material of the sheet base material is not particularly limited as long as the emulsion composition for cleansing can be impregnated. A sheet base usually used as a cosmetic product can be suitably used.

Examples of the sheet substrate include woven or nonwoven fabric made of natural fibers, synthetic fibers or semi-natural fibers. From the viewpoint of better impregnating property and feeling, the sheet substrate is preferably a nonwoven fabric.

Examples of the natural fibers include cotton, pulp, silk, cellulose, hemp, linter and kraft cloth. Examples of the synthetic fibers include nylon, polyester fibers, polyacrylic fibers, polypropylene fibers, polyethylene fibers, and polyethylene terephthalate fibers. Examples of the semi-natural fiber include rayon and acetate. The above-mentioned fibers may be used singly or two or more kinds thereof may be used.

The surface of the sheet base material may be embossed. The sheet substrate includes a film substrate.

The method for impregnating the sheet base material with the emulsified composition for cleansing is not particularly limited, and a known method can be employed.

The amount of the emulsified composition for cleansing impregnated in the sheet base material is preferably 1 part by mass or more, more preferably 3 parts by mass or more, and preferably 7 parts by mass or less, relative to 1 part by mass of the sheet substrate, Is not more than 6 parts by mass. If the impregnation amount of the emulsified composition for cleansing is lower than the lower limit, the cleansing force is further increased. If the amount of impregnation of the emulsion composition for cleansing is less than the upper limit, the sheet base material may be impregnated with the emulsion composition for cleansing more favorably and the impregnation state can be kept better.

Example

Hereinafter, the present invention will be specifically described with reference to examples and comparative examples. The present invention is not limited to the following embodiments.

In the Examples and Comparative Examples, the following components were used.

((A) nonionic surfactant)

(&Quot; EMALEX GWIS-220 ", manufactured by Nippon Emulsion Co., Ltd., number of moles of addition of ethylene oxide: 20), polyoxyethylene glyceryl diisostearate

("EMALEX GWIS-230" manufactured by Nippon Emulsion Co., Ltd., number of moles of ethylene oxide added: 30) and polyoxyethylene glyceryl diisostearate

("EMALEX GWIS-260" manufactured by Nihon Emulsion Co., Ltd., number of moles of ethylene oxide added: 60), polyoxyethylene glyceryl diisostearate

("EMALEX GWIS-120" manufactured by Nippon Emulsion Co., Ltd., number of moles of ethylene oxide added: 20), polyoxyethylene glyceryl monoisostearate

("EMALEX GWIS-160" manufactured by Nihon Emulsion Co., Ltd., number of moles of ethylene oxide added: 60), polyoxyethylene glyceryl monoisostearate

Polyoxyethylene hydrogenated castor oil (" HC-40 ", manufactured by Nihon Emulsion Co., Ltd., number of moles of ethylene oxide added: 40)

Polyoxyethylene hydrogenated castor oil ("HC-100" manufactured by Nippon Emulsion Co., Ltd., number of moles of ethylene oxide added: 100)

((A) 'other nonionic surfactant)

("EMALEX GWIS-320", manufactured by Nippon Emulsion Co., Ltd., number of moles of ethylene oxide added: 20), triisostearic acid polyoxyethylene glyceryl

("EMALEX GWIS-108" manufactured by Nippon Emulsion Co., Ltd., number of moles of ethylene oxide added: 8)

((B) acrylic acid-alkyl methacrylate copolymer)

Acrylic acid-methacrylic acid alkyl copolymer ("PEMULEN TR-2" manufactured by Lubrizol Corporation)

(Another component similar to (B) 'acrylic acid-alkyl methacrylate copolymer)

Carboxyvinyl polymer (" Carbopol 981 " manufactured by Lubrizol Corporation)

(C) Emulsion

Hydrocarbon oil:

(&Quot; Parleam EX "

Silicone oil:

Decamethylcyclopentasiloxane (" KF-955 " manufactured by Shin-Etsu Chemical Co., Ltd.)

((D) a polyhydric alcohol)

Concentrated glycerin (manufactured by Sakamoto Yakuhin Kogyo Co., Ltd. " cosmetic glycerin ")

((E) ethanol)

Ethanol (manufactured by Nippon Alcohol Hanba " 95 ° Synthetic Alcohol ")

(Other components)

antiseptic:

Methylparaben ("Mekkins M" manufactured by Ueno Seiyaku Co., Ltd.)

Phenoxyethanol (" phenoxyethanol-S " manufactured by Yokkaichi Kosei Co., Ltd.)

corrector:

Potassium hydroxide

water:

Purified water

(Examples 1 to 12 and Comparative Examples 1 to 5)

The emulsifying composition for cleansing was obtained by mixing the ingredients shown in the following Tables 1 and 2 (mixing ratio by mass%) and preparing them in accordance with the conventional method.

A nonwoven fabric of pulp / rayon ("KP9340" manufactured by Sansho) was prepared as a sheet base material. The sheet base material was impregnated with the emulsifying composition for cleansing to obtain a cleansing sheet (sheet cosmetic). Further, 5 parts by mass of the emulsion composition for cleansing was impregnated with 1 part by mass of the sheet base material.

(Test Example 1: Viscosity Measurement)

The viscosity of the resultant emulsion composition was measured using a TV-22 type viscometer manufactured by Toki Sangyo Co., Ltd. under the conditions of 25 ° C, No. 2 rotor at a rotation speed of 30 rpm and a rotation time of 1 minute.

(Test Example 2: Storage stability)

The obtained emulsion composition was kept in a constant temperature and humidity room at 25 占 폚 and 40 占 폚 for one week. From the state of the emulsion composition after storage, the storage stability was evaluated based on the following criteria.

<Evaluation Criteria of Storage Stability>

○ (good): uniform

DELTA (insufficient): slightly uneven state is recognized

× (poor): distinct separation is recognized

(Test Example 3: evaluation of cleansing force)

Twenty female panelists who made the makeup wiped out the make-up using the obtained cleansing sheet, and evaluated the cleansing force based on the following criteria.

<Criteria for evaluation of cleansing power>

○○ (fairly good): More than 16 out of 20 people answered that they had high cleansing power

○ (Good): 11 to 15 out of 20 respondents answered that their cleansing power was high

△ (inadequate): 6 to 10 out of 20 respondents said their cleansing power was high

× (bad): Less than 5 out of 20 answered that cleansing power is high

(Test Example 4: Evaluation of irritation)

At the time of cleansing in Test Example 3, whether or not eye irritation was strong and whether or not skin irritation was strong was evaluated. After cleansing in Test Example 3, it was evaluated whether or not skin irritation was strong.

<Evaluation Criteria for Stimuli>

○○ (fairly good): More than 16 out of 20 responded that the eye irritation and skin irritation at the time of cleansing and the skin irritation after cleansing were not strong

○ (Good): 11 ~ 15 out of 20 people were not strong in both eye irritation and skin irritation at the time of cleansing and skin irritation after cleansing

△ (inadequate): 6 to 10 out of 20 responded that eye irritation and skin irritation at the time of cleansing, and skin irritation after cleansing were not strong

× (bad): Less than 5 out of 20 responded that the eye irritation and skin irritation at the time of cleansing, and the skin irritation after cleansing were not strong

The compositions and results are shown in Tables 1 and 2 below.

[Table 1]

[Table 2]

Claims (6)

And a cleansing emulsion composition impregnated in the sheet base,
Wherein the emulsifying composition for cleansing contains a nonionic surfactant, an acrylic acid / methacrylic acid alkyl copolymer and an emulsion,
Wherein the nonionic surfactant is diisostearic acid polyoxyethylene glyceryl,
Wherein the cleansing emulsion composition has a viscosity at 25 占 폚 of 1000 mPa 占 퐏 or less. The method according to claim 1,
Wherein the emulsion is at least one of hydrocarbon oil and silicone oil. delete 3. The method according to claim 1 or 2,
Wherein the content of the nonionic surfactant which is diisostearic acid polyoxyethylene glyceryl in the above 100% by mass of the cleansing emulsion composition is 0.1% by mass or more and 5% by mass or less, and the content of the acrylic acid-methacrylic acid alkyl copolymer is 0.01% by mass or more and 0.2% by mass or less, and the content of the emulsion is 1% by mass or more and 25% by mass or less. 3. The method according to claim 1 or 2,
Wherein the emulsifying composition for cleansing further contains a polyhydric alcohol. 3. The method according to claim 1 or 2,
Wherein said emulsifying composition for cleansing further contains ethanol.