CN1615812A - Sheet cosmetic removing material - Google Patents

Abstract

A sheet-like cleansing material is obtained by impregnating a nonwoven fabric comprising fibers >=70 mass % in cellulose content and having a density of 0.15-0.3 g/cm<3> with an oil-in-water type emulsified composition comprising 0.01-0.5 mass % of an aqueous thickening agent, 5-30 mass% of an oil 160-300 DEG C in boiling point and water.

Description

Sheet makeup remover

technical field

The present invention relates to a cleansing material for cleansing in sheet form.

Background technique

People's requirements for makeup cosmetics are: good adhesion to the skin, high water resistance and sebum resistance, not easy to remove makeup, and good durability of makeup effect. Especially in the case of mascara as one of the eye cosmetics, in order to prevent makeup from falling off due to sweat or water, solid wax or film-forming polymers are used to make oily mascara, and in order to maintain the curling effect, etc., Water-based mascaras are made using water-soluble polymers with film-forming capabilities.

On the other hand, there is also a need for products that can efficiently remove cosmetics that are put on, and various makeup removers are used for this purpose. Known techniques for removing makeup include: using an aqueous surfactant solution or oily formulations such as gels, emulsions, and oily formulations. However, in the prior art, there is the following problem: although the water-based makeup remover composition can remove the water-based mascara with water-soluble and water-dispersible properties more quickly, it cannot remove the oil-based mascara; It can remove oil-based mascara, but not water-based mascara.

In order to achieve the purpose of removing both oily mascara and water-based mascara, a technical scheme of a two-phase cleansing composition in which the oil phase and the water phase are separated has been proposed. In this type of cleansing composition, the oil phase performs the function of removing oily mascara, while the aqueous phase performs the function of removing water-based mascara. However, when this solution is in use, it needs to be vigorously stirred by hand into a dispersion that is temporarily homogeneous in appearance, then penetrates into cotton or paper towels, etc., and then wipes off the cosmetics, so it is not easy and difficult to adjust to the optimum Optimal dosage.

Furthermore, a cleansing material in which a cleansing composition is impregnated in a sheet-shaped carrier has also been proposed for easy and quick cleansing. However, once the two-phase cleansing composition is impregnated into the sheet-shaped carrier inside the sheet-like laminate, the oil-water phase separation of the two-phase cleansing composition is likely to occur inside the sheet-like laminate, and therefore The composition of the impregnating liquid in the upper and lower parts of the laminate is different. In addition, during the preservation of the laminate, the impregnating liquid moves to the lower layer due to gravity, so that the impregnation rate is very different between the upper and lower parts of the laminate. As a result of such changes in the composition of the impregnating liquid and the impregnation rate, the cleansing performance of the upper and lower parts of the laminated sheet differs, and a stable cleansing effect tends not to be achieved.

Japanese Unexamined Patent Publication No. 2001-302450 discloses a cleansing material in which a sheet is impregnated with emulsion cosmetics having a viscosity of 200 to 4000 mPa·s. However, since this emulsion cosmetic is based on the stable emulsification of surfactants (at 50°C, there is a stable period of one month), in the case of oil-in-water emulsions, there are oils that are not easy to release, making it difficult to remove makeup. Insufficient problem; and in the case of water-in-oil type emulsion, there is a problem of enhanced oiliness. In addition, although the emulsification is stable, there is no problem with the change of the internal composition of the sheet, but there is a problem that, depending on the condition of the sheet, in the case of stacking the sheet, the impregnation liquid moves to the lower layer due to gravity during storage, Between the laminated upper and lower sheets, the impregnation rate varies greatly, resulting in changes in the usability and cleansing performance, making it impossible to maintain stable quality.

In addition, low-boiling point oil agents such as low-boiling point isoparaffins are known to have the ability to remove makeup cosmetics, and various cleansing materials using this component have also been disclosed in the prior art.

Japanese Unexamined Patent Publication No. 5-163116 discloses an eye makeup remover prepared by emulsifying low-boiling isoparaffins having a boiling point of 160 to 280° C. in water using polyoxyethylene alkyl ether surfactants. However, since this technology uses a surfactant to stabilize the emulsification, the oil is not easy to release and the cleansing performance is poor. On the other hand, in order to obtain cleansing performance, there is a tendency to increase the blending amount of the oil agent, resulting in a greasy feeling in use. In addition, this document does not disclose conditions for maintaining stable quality in the form of a sheet impregnated with an oil-in-water emulsion composition and a product in which the sheet is laminated.

In Japanese Patent Application Publication No. 62-135406, it is disclosed that polyacrylic acid thickener is used to disperse low-boiling point isoparaffin or low-boiling point silicone oil into the water phase, and the use of low-boiling point oil agent is not used. makeup remover. And in Japanese Patent Application Laid-Open No. 9-110638, then disclose the makeup remover with water-soluble polysaccharides, low-boiling point oil agent and water as essential components. However, none of them discloses that the oil-in-water emulsion composition is made into a tablet preparation.

In addition, JP 11-503461 discloses an oil-in-water emulsion composition containing an acrylic acid-alkyl acrylate copolymer emulsion composition, an oil agent, water, and a non-emulsifying surfactant, and It is disclosed that the form of the composition may be wiped off with a cotton ball, a cotton pad, a paper towel, a towel or the like. However, this oil-in-water emulsion is based on the premise of using a stable product of the emulsified composition (at 40°C, there is a stable period of 3 months), but it does not reveal the layering of the oil-in-water emulsified composition. In the commercial form of tablets, the conditions for maintaining stable quality.

In addition, Japanese Patent Application Laid-Open No. 8-99836 discloses a multi-layer cleansing material containing a low-viscosity oil agent such as isoparaffin, which forms a water-in-oil emulsion after shaking. However, since this product is used in such a way that the product, which becomes emulsion after shaking, is rubbed on the skin, there is a problem that the quality varies greatly when the amount or composition of the product is not used.

In these prior art, the status quo is that when oil agents such as low-boiling point isoparaffins are stably emulsified, the cleansing performance is insufficient, and when the cleansing performance is given priority, separation into two phases or a complex form that enhances the oiliness may occur The problem. Furthermore, when the cleansing composition impregnated in the sheet-like carrier is of a two-phase type, phase separation tends to occur and the quality cannot be maintained. Therefore, the cleansing performance is insufficient on the premise that the emulsified form of the oil agent is basically stabilized. Furthermore, in a commercial form in which sheets impregnated with layered oil-in-water emulsion compositions are laminated, conditions for maintaining stable quality are unknown.

Contents of the invention

The object of the present invention is to provide a cleansing material in the form of a sheet that can remove both water-based cosmetics and oily cosmetics quickly and easily, has excellent cleansing performance and usability, and can maintain stable quality even in the form of a laminated sheet. .

The present invention relates to an oil-in-water emulsified composition (B) containing 0.01 to 0.5% by weight of a water-based thickener, 5 to 30% by weight of an oil agent with a boiling point of 160 to 300°C, and water, impregnated with a cellulose content. A cleansing material in the form of a sheet obtained from a nonwoven fabric (A) having 70% by weight or more of fibers having a density of 0.15 to 0.3 g/cm ³ .

Detailed ways

In the present invention, a water-based thickener is used to emulsify and disperse a low-boiling oil agent with strong cleaning ability and low oiliness, and combine it with a relatively high-density hydrophilic non-woven fabric. The sheet is a relatively high-density hydrophilic non-woven fabric, which stably maintains the water phase of the external phase of the emulsified composition, and the high-molecular water-based thickener containing oil is interwoven between the fibers. Keep the oil stably in the non-woven fabric. Utilizing this action, migration of the emulsified composition in the nonwoven fabric can be suppressed, and the amount and composition of the emulsified composition in the nonwoven fabric can be maintained. Since the emulsified composition emulsifies and disperses the oil agent without impairing the cleaning ability, the cleansing material of the present invention is easy to release the oil agent, has strong cleaning ability, has good performance of liquid exuding from the sheet, and has a good feeling of use. Furthermore, the above-mentioned quality can be stably maintained even when the sheet is in a laminated state. Moreover, since the cleansing material of the present invention is in the form of a sheet, it can be used immediately after being taken out of the packaging container, and since the makeup can be removed by simply wiping, it can be easily and quickly removed.

In addition, in the present invention, "stable quality can be maintained in the form of laminated sheets" means: in the form of 40 stacked sheets folded in a zigzag shape, stored at 50°C for one month, counted from the top The impregnation rate of the 2nd sheet and the 39th sheet, with respect to the impregnation rate of the initial setting, its variation is within ±40%; Specifically, in the following methods, the cleansing performance of the second sheet and the 39th sheet from the top was rated as ⊚ or ◯ on the basis of the following evaluation criteria.

Evaluation method of makeup removal performance

On the glass slide, apply 0.0045 g of oily mascara evenly into a circle with a diameter of 1.2 cm, and place it for a certain period of time to make it dry. Place the sheet-like cleansing material on the above-mentioned dried mascara, start with a certain pressure of 100g/cm ² , press for 5 seconds, then perform a wiping operation, and measure the number of times of wiping required to remove the mascara.

Evaluation benchmark

◎: Less than 5 times

○: 6 to 10 times

△: 11 to 15 times

×: 16 times or more

The nonwoven fabric (A) used in the present invention contains fibers with a cellulose content of not less than 70% by weight, and has a density of 0.15-0.3 g/cm ³ .

In order to suppress migration of the impregnated oil-in-water emulsion composition (B) in the sheet, the sheet nonwoven fabric (A) is preferably a hydrophilic nonwoven fabric so that the water phase as the external phase can be stably held. Considering that when the oil agent in the oil-in-water emulsion composition penetrates into the fibers of the non-woven fabric due to impregnation, the wettability of the non-woven fabric to the aqueous component is reduced, and when mixing hydrophobic fibers, the non-woven fabric itself The wettability with respect to an aqueous component falls, Therefore, the nonwoven fabric (A) used the nonwoven fabric containing the fiber with a cellulose content of 70 weight% or more. In order to stably maintain the aqueous phase as the external phase, the cellulose content is more preferably equal to or greater than 80% by weight.

Specific examples of the cellulose fiber include cotton, rayon, and the like. Cotton is particularly preferred due to its smooth skin feel. In addition, the nonwoven fabric is preferably made by hydroentanglement (spunlace method) in consideration of skin touch.

As long as the above-mentioned requirements are satisfied, hydrophobic fibers may also be mixed in order to modify the sheet. Specific examples of hydrophobic fibers include polyester fibers and polyolefin fibers. For example, polyethylene terephthalate (PET), polybutylene terephthalate (PBT), polypropylene (PP), polyethylene (PE) and the like.

In order to stably hold the impregnated oil-in-water emulsion composition (B) and suppress its migration in the sheet, the nonwoven fabric (A) is preferably a relatively high-density nonwoven fabric. Considering that it is not easy to cause the liquid to move to the lower sheet due to gravity, the density of the non-woven fabric is set to be greater than or equal to 0.15g/cm ³ , and considering that it is easy to impregnate the impregnation liquid in the sheet, bringing softness For the usability of the sheet, the density of the nonwoven fabric is set to be 0.3 g/cm ³ or less. On the other hand, the density of the nonwoven fabric is particularly preferably 0.17 to 0.25 g/cm ³ in consideration of both the suppression of liquid migration and the usability.

In addition, considering that it is not easy to wrinkle when wiping, easy to use, and the stain does not move inward, the average basis weight (weight per unit area) of the non-woven fabric (A) is preferably greater than or equal to 40g/cm ² ; Increase the volume to obtain a soft feeling, preferably less than or equal to 100 g/cm ² or less. Because it is easy to handle during use and has a moderate volume during lamination, it is particularly preferably 50-80 g/cm ² .

The nonwoven fabric (A) can also be a sheet formed by laminating or pasting two or more than two kinds of nonwoven fabrics. The shape of the non-woven fabric (A) is preferably a shape, size and thickness that are convenient to be taken by hand. For example, squares, rectangles, circles, and ovals with a side length or diameter of about 5 to 20 cm can be mentioned, and the preferred thickness is About 0.2 ~ 0.5mm.

The oil-in-water emulsion composition (B) used in the present invention contains 0.01 to 0.5% by weight of an aqueous thickener, 5 to 30% by weight of an oil agent having a boiling point of 160 to 300°C, and water.

In the present invention, it is preferable to use an aqueous thickener for emulsifying the oil agent. Particularly preferred is an aqueous thickening polymer having a weight average molecular weight of 1,000 or more. When emulsification is performed using an aqueous thickener, the oil agent in the emulsified composition is emulsified and dispersed to the extent that the cleaning ability is not impaired, and after the sheet is impregnated with the emulsified composition, the aqueous thickener containing oil is interwoven between the fibers, thereby stably retaining the oil in the sheet.

The water-based thickener specifically includes the following water-soluble polymers. Among them, natural water-soluble polymers include, for example: gum arabic, gum tragacanth, galactan gum, guaiac gum, carob gum, karaya gum, carrageenan, pectin, agar, quince seed gum, Brown algae extract, starch paste (rice, corn, potato, wheat), glycyrrhizic acid and other plant polymers; xanthan gum, dextrin, succinic glucan, pullulan and other microbial polymers; collagen, casein , albumin, gelatin and other animal polymers. The artificial water-soluble polymers can be cited, for example: starch polymers such as carboxymethyl starch and methyl hydroxypropyl starch; methyl cellulose, nitrocellulose, ethyl cellulose, methyl hydroxypropyl cellulose Cellulose polymers such as cellulose, hydroxyethyl cellulose, sodium cellulose sulfate, hydroxypropyl cellulose, and sodium carboxymethyl cellulose (CMC); alginic acid polymers such as sodium alginate and propylene glycol alginate. The synthetic water-soluble macromolecules can be enumerated, for example: polyvinyl alcohol, polyvinyl methyl ether macromolecules, polyvinylpyrrolidone, carboxy vinyl polymers (CARBOPOL 940, 941; Noveon, Inc.) and other vinyl Base polymers; polyethylene glycol 20000, polyethylene glycol 6000, polyethylene glycol 4000 and other polyoxyethylene polymers; polyoxyethylene-polyoxypropylene copolymers and other copolymer polymers; sodium polyacrylate, Acryloyl polymers such as polyethyl acrylate and polyacrylamide; polyethyleneimine, cationic polymers, etc.

In particular, it is more preferable to use a water-based thickener containing a hydrophobic portion because the emulsified composition hardly causes a compositional change in the sheet. The inventors believe that this is because the hydrophobic part of the water-based thickener interacts with the oil, so that the oil can be kept stably in the water without impairing the cleaning ability of the oil. The water-based thickener containing a hydrophobic part in the present invention refers to a water-soluble polymer having a hydrophobic group with a carbon number greater than or equal to 10 in its side chain. Examples of such water-based thickeners having emulsification stability include acrylic acid-alkyl methacrylate copolymers (manufactured by Noveon, Inc., trade names: PEMULEN TR-1, TR-2, CARBOPOLETD, etc.), hydroxyl Ethyl cellulose, hydroxypropyl stearyl ether, sodium hydroxypropyl sulfonate (JP-A-9-235301) and the like.

The above water-based thickeners can be used alone or in combination of two or more. In consideration of emulsification stability, the content of the aqueous thickener is 0.01% by weight or more in the total composition; and in order to achieve a viscosity that is easy to be impregnated in the sheet and good processability, its content is 0.5% by weight or less in the total composition. %. When both emulsification stability and processability are considered, the content range of the aqueous thickener is preferably 0.1-0.4% by weight of the total composition.

In consideration of the cleansing performance of oily cosmetics and the feeling of use with little oiliness, the present invention uses an oil agent with a boiling point of 160-300°C. Among them, oils with a boiling point of 160 to 250°C are preferred due to weak skin residue after use; and oils with a boiling point of 160 to 200°C are more preferred, particularly preferably 160 to 190 ℃ oil.

Examples of the oil agent having the above-mentioned boiling point include low-boiling point isoparaffin, low-boiling point silicone oil, and the like. Among them, in consideration of the cleansing performance, it is particularly preferable to use an oil agent having a low-boiling point isoparaffin in an amount of 50% by weight or more in the oil agent having the above-mentioned boiling point.

Low-boiling isoparaffins are usually a mixture of C _8-18 hydrocarbons, and when they contain low-molecular-weight hydrocarbons, they have a unique odor. Since some users do not like this smell, it is preferable to contain as little as possible low molecular weight hydrocarbons of _C8-9 . On the other hand, when the content of high-molecular-weight hydrocarbons of C _{16 to 18} is large, the cleaning ability tends to be deteriorated and the oiliness after use tends to increase. Therefore, considering comprehensive considerations, hydrocarbons with a relatively high content of C _10-15 isoparaffins are preferred. Among them, in order to balance odor, feeling in use and cleansing performance, hydrocarbons with a relatively high content of _C12 isododecane are preferred. The present invention is especially suitable for the use of low-boiling isoparaffins with an isododecane content greater than or equal to 90% by weight, more preferably greater than or equal to 95% by weight.

Low-boiling point isoparaffins can be cited: trade names MARCASOL R (Maruzen Petrochemical), IP SOLVENT 1620, IP SOLVENT 2028 (the above is from Idemitsu Petrochemical in Japan), ISOPER L. ISOPER H (the above is from EXXON Chemical), ISOSOL 300 , ISOSOL 400 (the above are from New Nippon Petrochemical), etc., MARCASOL R (Nippon Maruzen Petrochemical) is particularly preferred because it contains high-purity isododecane.

Examples of the low-boiling point silicone oil include chain and cyclic silicone oils, such as chain dimethyl polysiloxane with a low degree of polymerization, octamethylcyclotetrasiloxane, decamethylcyclopentasiloxane, and the like.

Oil agents with a boiling point of 160-300°C can be used alone or in combination of two or more. Considering the cleansing performance, the content of the oil agent with a boiling point of 160 to 300° C. in the total composition is 5% by weight or more; and considering the use feeling with less oily feeling and suppressing the hydrophobization of the sheet when the sheet is impregnated, to prevent the sheet The movement of liquid in the material, the content of which is less than or equal to 30% by weight in the total composition. In consideration of cleansing performance, usability and storage stability of the sheet, the content range of the oil agent with a boiling point of 160-300° C. is preferably 10-25% by weight of the total composition.

In the oil phase of the oil-in-water emulsion composition (B), other oil agents may be mixed in addition to the above-mentioned oil agents having a boiling point of 160 to 300°C. In consideration of maintaining the ability to clean cosmetics, the content of the above-mentioned other oil agents in the total amount of the oil phase is preferably less than or equal to 50% by weight, particularly preferably less than or equal to 20% by weight.

The above-mentioned other oils can be oils that are usually widely used as raw materials for cosmetics, specifically hydrocarbons such as liquid paraffin and squalane; higher alcohols such as stearyl alcohol, cetyl alcohol, and oleyl alcohol; oleic acid, linoleic acid, etc. Fatty acids such as oleic acid; dialkyl ethers such as isostearyl octyl ether, cetyl-1-methyl propyl ether, cetyl-1,3-dimethyl butyl ether, etc.; meat Fatty acid esters such as isopropyl myristate and isopropyl palmitate; fatty acid triglycerides; fluorine oil, etc.

On the other hand, in consideration of sufficient cleansing ability and good feeling in use, the water content in the oil-in-water emulsion composition (B) is preferably equal to or greater than 10% by weight, more preferably equal to or greater than 30% by weight, especially Preferably it is 50 weight% or more. On the other hand, in consideration of sufficient cleansing ability and good usability, the water phase contained in the oil-in-water emulsion composition (B) is preferably 40 to 95% by weight of the total composition, more preferably 70 to 90% by weight.

A water-soluble solvent may also be used in the water phase of the oil-in-water emulsion composition (B) in order to enhance cleaning ability. In particular, more than one water-soluble solvent selected from ethylene carbonate, propylene carbonate, hexanediol and 1,2-pentanediol, which accounts for about 50% of the water phase, can be used because it can be used for mascara. Efficient cleaning effect on cosmetic stains that form a film. In consideration of cleaning ability and usability, the content of the above-mentioned solvent is preferably 1 to 50% by weight, particularly preferably 5 to 25% by weight, of the total amount of the aqueous phase.

In addition, the feeling of use can also be improved by mixing alcohols such as ethanol and polyalcohol in the water phase. In particular, the addition of ethanol has a strong refreshing effect, and the addition of 1,3-butanediol or glycerin has a strong moisturizing effect.

Since the oil agent is stably dispersed in the system when the surfactant is used for emulsification, makeup removal is slowed down, so it is preferable to seek the function of stabilizing emulsification and dispersion from the above-mentioned water-based thickener. In addition, a small amount of surfactant may be used to improve the wettability and permeability of the emulsified composition to the sheet within the range not impairing the effect of the present invention. In order to use within the range that does not affect the cleansing performance of the oil, the content of the surfactant is preferably 1% by weight or less of the total composition, more preferably 0.5% by weight or less, particularly preferably 0.05% by weight or less.

Surfactants can be used alone or in combination of two or more. In consideration of mildness to skin, specific examples include polyoxyethylene alkyl ethers, sucrose fatty acid esters, fatty acid monoglycerides, sorbitan fatty acid esters, polyoxyethylene sorbitan fatty acid esters, Polyoxyethylene cured castor oil and its fatty acid esters, polyoxyalkylene fatty acid esters and other nonionic surfactants.

Moreover, the neutralizing agent which neutralizes and thickens the said aqueous thickener can also be used as needed. There are no particular restrictions on the neutralizer as long as it is permitted for cosmetic use. For example, inorganic alkaline reagents such as sodium hydroxide and potassium hydroxide; basic amino acids such as L-arginine; amines such as triethanolamine; ammonium and the like. The amount of the neutralizing agent varies with the type and is not particularly limited. It can be determined according to the type and amount of the water-based thickener, and usually accounts for about 0.005-0.5% by weight of the total composition. Moreover, the neutralizing agent can be pre-dissolved in water or directly mixed with the water-based thickener and added.

In addition to the above-mentioned components, a humectant, an oil gelling agent, an ultraviolet absorber, a fragrance, Various additives such as pigments, dyes, salts, stabilizers, preservatives, antioxidants, vitamins, proteins, and care agents.

The oil-in-water emulsion composition (B) is prepared by adding an oil phase to the water phase which dispersed the aqueous thickener. In this case, the viscosity is preferably adjusted to 100 to 2000 mPa·s, particularly preferably 200 to 1000 mPa·s. As long as it is within the above range, the oil agent has excellent retention property, and the feeling of liquid bleeding is sufficient after dipping into the emulsified composition. In addition, the viscosity refers to the value measured with the BM-type viscometer (manufactured by TOKIMEC INC.) under the conditions of spindle No. 2, 6 rpm, and 30°C.

In consideration of cleansing performance and feeling of use, the emulsified composition (B) prepared by the present invention is preferably a composition that will gradually separate after standing for a period of time to form a transparent water phase and a high-viscosity emulsified phase. Specifically, it is preferably a slightly unstable emulsified composition that separates into an aqueous phase and another emulsified phase after one day to one month when it is left still at 30° C. after mixing thoroughly. Therefore, immersion into the nonwoven fabric (A) is performed before separation progresses. The vertical movement and separation in the nonwoven fabric of the emulsified composition (B) impregnated in a suitably selected nonwoven fabric (A) are suppressed. Since the emulsified composition (B) is a slightly unstable emulsified composition, compared with a stable emulsified composition in which the water phase is also thickened by the polymer compound, the liquid exudes from the sheet when used. In good condition with excellent make-up removal properties.

In order to achieve a good feeling of use, the impregnation amount of the emulsified composition (B) in 1 g of the nonwoven fabric (A) is preferably 2 to 5 g, particularly preferably 2.5 to 4.5 g.

The sheet-shaped cleansing material of the present invention can be produced by dripping or spraying the emulsified composition (B) onto the nonwoven fabric (A) from a nozzle, and then leaving it to fully impregnate the sheet.

The sheet-shaped cleansing material of the present invention is that each sheet or multiple sheets are stacked and sealed in a bag for use. How to use: When using, unseal the bag, take out a sheet of makeup remover material, whether it is oily cosmetics or water-based cosmetics, press it against the part where you want to remove the cosmetics, and wipe off the cosmetics. Thereby, it is possible to exert a good cleansing effect on various types of makeup stains, and to sufficiently remove both water-based cosmetics and oil-based cosmetics quickly and easily.

As described above, the cleansing material of the present invention can easily and quickly remove both water-based cosmetics such as water-based mascara and oily cosmetics such as oil-based mascara, and has excellent cleansing performance and usability. Can maintain stable quality.

The following examples are used to further illustrate the present invention, and to illustrate specific embodiments of the present invention.

Evaluation method of makeup removal performance

The evaluation of cleaning power used oily mascara which is also the most stubborn stain among usual cosmetic stains.

Apply 0.0045 g of oily mascara (trade name SPORTS BEAUTY FASIOPOWER STAY MASCARA CURLLONG BK001 manufactured by KOSE) evenly on a glass slide to form a circle with a diameter of 1.2 cm, and let it dry for 12 hours. Each sheet-shaped cleansing material is pressed against the mascara, and after being lightly pressed for 5 seconds, it is wiped with a certain pressure, such as 100g/cm ² , and the number of times of wiping required to remove the mascara is measured.

evaluation standard

◎: less than 5 times;

○: 6 to 10 times;

△: 11 to 15 times;

×: 16 times or more.

How to evaluate usability

After wiping the face with each sheet-shaped cleansing material, 10 experts conducted a sensory evaluation of the skin feeling.

evaluation standard

◎: More than 9 out of 10 rated it as non-sticky, oil-free and sexy;

○: 7-8 out of 10 rated it as non-sticky, oil-free and sexy;

△: 5 to 6 out of 10 panelists evaluated that the product was not sticky and had an oil-free feel.

Evaluation method of odor

Ten experts performed a sensory evaluation of the smell when or after wiping the face with each sheet-like cleansing material.

evaluation standard

○: More than 8 out of 10 judged that there was an acceptable smell during use;

△: 5-7 out of 10 judged that there was an acceptable smell during use;

Evaluation method of quality stability: the impregnation rate at the time of preparation and after storage

40 nonwoven fabrics (hereinafter referred to as sheets) cut into a size of 75 mm×200 mm were folded into a Z shape, stacked, and the emulsified composition was impregnated therein. The impregnation rate immediately after preparation was then measured. Then, the laminate was sealed in an aluminum pillow and stored at 50° C. for one month. Then, the temperature was returned to room temperature, and the impregnation rate of the second to the thirty-ninth sheets from the top and their respective cleansing performances were evaluated. The impregnation rate was calculated by the following formula after measuring the weight of each impregnated sheet, washing the sheet with a detergent, rinsing with water, and drying, measuring the weight of the dried sheet.

Impregnation rate% = (weight of impregnated piece - dry piece weight) × 100/dry piece weight evaluation standard

⊚: Compared with the impregnation rate immediately after preparation, the change in the impregnation rate after storage is ±25% or less.

◯: Compared with the impregnation rate immediately after preparation, the change in the impregnation rate after storage is more than ±25% and within ±40%.

Δ: Compared with the impregnation rate immediately after preparation, the change in the impregnation rate after storage is more than ±40% and within ±60%.

×: Compared with the impregnation rate immediately after preparation, the change in the impregnation rate after storage is more than ±60%.

viscosity

Using a BM-type viscometer (manufactured by TOKIMEC INC.), the measurement was performed under the conditions of rotor No. 2, 6 rpm, and 30°C.

Stability Evaluation of Emulsion Composition

The prepared emulsified composition was put into a screw-top glass bottle, and it stored in the thermostatic chamber of 30 degreeC. Observe the appearance changes after one day, three days, seven days, ten days, fourteen days and one month.

Examples 1-10, Comparative Examples 1-3

Prepare the emulsified composition with the composition shown in Table 1, and impregnate the emulsified composition in 100% cotton with a density of 0.15 g/cm ³ and an average basis weight of 60 g/m ² at a ratio of 3.5 g of the emulsified composition to 1 g of non-woven fabric of non-woven fabrics, tuned into samples. The evaluation results are summarized in Table 1. The amounts of each component are parts by weight.

Method for making emulsified composition

Add the water-based thickener, ie components (1) to (3), into the water component (13), and stir with a disperser at a speed of 1200 rpm for 30 minutes to disperse it evenly. While stirring with a propeller at a speed of 200rpm, add the neutralizer component (15) and keep for 10 minutes to neutralize and thicken. Continue stirring, and add ingredients (9)-(12) and ingredient (14), and dissolve. Then, components (4)-(8) were slowly added dropwise, kept for 2 hours, and then stirred with an AGI homogeneous stirring device at a rotation speed of 4500 rpm for 30 minutes to obtain an emulsified composition.

Table 1 ingredients Example comparative example 1 2 3 4 5 6 7 8 9 10 1 2 3 water-based thickener 1 PEMULEN TR ^* 1 0.05 0.05 0.05 0.05 0.05 0.07 0.05 0.05 0.05 0.05 2 CARBOPOL ETD ^* 2 0.025 3 SPS ^* 3 0.10 0.10 0.10 0.10 0.10 0.10 0.10 0.10 0.20 0.10 0.10 low boiling point oil 4 IP Solvent 1620 ^* 4 15 25 20 5 IP Solvent 2028 ^* 5 15 15 6 MARCASOL R ^* 6 15 15 10 20 15 20 8 40 7 Decamethylcyclopentasiloxane 5 12 Other oils 8 liquid paraffin 3 Surfactant 9 POE15 cetyl ether 1.5 10 POE6 cetyl ether 1.0 11 POE20 Sorbitan Monooleate 0.6 0.045 0.045 12 Sorbitan monooleate 0.4 water 13 pure water Margin (amount to make the total value 100) solvent 14 Hexylene glycol 5 Neutralizer 15 48% KOH 0.023 0.023 0.023 0.023 0.038 0.023 0.023 0.023 0.023 0.023 Cleansing performance immediately after preparation ◎ ◎ ○ ◎ ○ ○ ◎ ◎ ◎ ○ x ◎ ◎ sense of use ◎ ◎ ○ ○ ○ ○ ◎ ◎ ◎ ○ △ ◎ △ odor △ ○ ○ ○ ○ ○ ○ ○ ○ ○ △ △ ○ Impregnation rate after storage (2nd piece) ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ △ △ Impregnation rate after storage (the 39th tablet) ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ △ △ Cleansing performance after preservation (2nd tablet) ◎ ◎ ○ ◎ ○ ○ ◎ ◎ ◎ ○ x ◎ ◎ Cleansing performance after storage (39 tablets) ◎ ◎ ○ ◎ ○ ○ ◎ ◎ ◎ ○ x x △ Viscosity (mPa·s) 650 625 600 475 2000 600 800 800 800 700 3000 10*7 1200 State of emulsified composition after one month separate separate separate separate no separation separate separate separate separate separate no separation separate separate

In addition, the sources of the materials used are as follows:

^* 1: Acrylic acid-alkyl methacrylate copolymer: trade name PEMULEN TR-2, Noveon, Inc.

^* 2: Acrylic acid-alkyl methacrylate copolymer: trade name CARBOPOL ETD, Noveon, Inc.

^* 3: Sodium hydroxyethyl cellulose hydroxypropyl stearyl ether hydroxypropyl sulfonate (Japanese Patent Application Laid-Open No. 9-235301)

^* 4: Low boiling point isoparaffins (boiling point 166-202°C): trade name IP Solvent 1620, Idemitsu Petrochemical Co., Ltd.

^* 5: Low boiling point isoparaffins (boiling point 213-262°C): trade name IP Solvent 2028, Idemitsu Petrochemical Co., Ltd.

^* 6: Low boiling point isoparaffins (boiling point 175-185°C): trade name MARCASOL R, Maruzen Petrochemical Co., Ltd.

^* 7: Separation into two phases immediately after modulation

According to the results shown in Table 1, it can be seen that the emulsified composition (B) using a quantitative water-based thickener and an oil agent with a boiling point of 160 to 300°C was impregnated in the nonwoven fabric (A) used in the present invention. Example 1 ~10, it can easily and quickly remove the most difficult to fall off oily mascara, and the use feeling is good. After the non-woven fabric was laminated and stored, the makeup removal performance of the second and 39th sheets was still excellent, and the quality stability was good. The odor evaluation of IP SOLVENT 1620 containing C ₈ and C ₉ isoparaffins is slightly worse.

In Example 5, the amount of surfactant added is the allowable upper limit, and the relatively stable emulsified composition without separation after one month has reached the effect of the present invention. Compared, the makeup remover effect of Example 2, which is only emulsified with an aqueous thickener, is better.

In addition, in Example 4 in which hexanediol was added, the makeup-removing performance was evaluated as described above using a film-forming mascara, and it was found that the makeup-removing performance was also excellent for a film-forming mascara.

Instead of using an aqueous thickener, Comparative Example 1, which uses a surfactant generally used as an emulsified composition and is prepared in a normal cleansing composition, corresponds to the composition of the above-mentioned Japanese Patent Laid-Open No. 5-163116, The makeup removal performance is very poor, and the feeling of use is also poor. In Comparative Example 2, which does not use a water-based thickener but only uses an oil agent with a boiling point of 160 to 300°C, the water phase and oil phase of the emulsified composition are separated, and the cleansing performance of the sheet is poor immediately after preparation, but after storage, The impregnation rate and composition of the liquid were greatly different, and the cleansing performance of the 39th tablet after storage became very poor. In addition, in Comparative Example 3, which used a water-based thickener and an oil agent with a boiling point of 160 to 300°C, but the amount of the oil was more than the amount used in the present invention, the feeling of use was poor and the liquid was unstable in the sheet, and the liquid immersion after storage The rate and composition also deteriorated.

Examples 11-14, Comparative Examples 4-6

For Examples 11 to 14 and Comparative Examples 4 to 5, the emulsified composition prepared in Example 2 was immersed in a nonwoven fabric having the composition, density, and basis weight shown in Table 2 with the liquid amount shown in Table 2, Prepared as a sample; and in Comparative Example 6, with the amount of liquid shown in Table 2, the emulsified composition prepared in Example 5 was impregnated in a nonwoven fabric with composition, density, and basis weight shown in Table 2 to prepare sample. The evaluation results are summarized in Table 2. And Example 2 is also shown in Table 2 together.

Table 2 Example comparative example 2 11 12 13 14 4 5 6 Composition of non-woven fabric (%) cotton 100 100 100 100 50 100 artificial fiber 100 80 PET 20 50 Density of non-woven fabric (g/cm ³ ) 0.15 0.19 0.27 0.19 0.16 0.12 0.15 0.12 Basis weight of non-woven fabric (g/cm ² ) 60 60 100 60 80 30 60 30 Amount of impregnating liquid (g/g of non-woven fabric) 3.5 3.5 3.5 3.5 3.5 3.2 3.5 3.5 Cleansing performance immediately after preparation ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ sense of use ◎ ◎ ○ ○ ○ ○ ○ ○ Impregnation rate after storage (2nd piece) ○ ◎ ◎ ◎ ○ △ △ △ Impregnation rate after storage (the 39th piece) ○ ◎ ◎ ◎ ○ △ △ △ Cleansing performance after storage (2nd tablet) ◎ ◎ ◎ ◎ ◎ ○ △ △ Cleansing performance after storage (39 tablets) ◎ ◎ ◎ ◎ ◎ ◎ ◎ ○

According to the results shown in Table 2, it can be known that Examples 2 and 11 to 14 of the present invention are products with excellent cleansing performance, usability and quality stability. In Comparative Example 4 using a nonwoven fabric with a density lower than that of the nonwoven fabric used in the present invention, there was a difference in the impregnation rate after storage, and the second and 39th sheets from the top after storage showed different cleansing properties. In Comparative Example 5, which uses a non-woven fabric containing 50% of the hydrophobic fiber PET (polyethylene terephthalate), there is also a difference in the impregnation rate after storage, and the second and 39th sheets from the top after storage Shows different makeup removal properties. In addition, from Comparative Example 6 using a stable oil-in-water emulsion composition and a nonwoven fabric having a density lower than that of the nonwoven fabric used in the present invention, it can be seen that even if a stable oil-in-water emulsion composition is used, when impregnated When the conditions of the flakes are not suitable, the impregnation rate after storage will also be different, so that the cleansing performance will change, and the stable quality cannot be maintained.

Claims (5)

1. sheet cosmetic removing material, it is characterized in that, to contain water-based thickener 0.01～0.5 weight %, boiling point is 160～300 ℃ oil preparation 5～30 weight % and the O/W emulsion composition (B) of water, is immersed in that to contain content of cellulose be 0.15～0.3g/cm more than or equal to the density of the fiber of 70 weight % ³Non-woven fabrics (A) in and make.

2. sheet cosmetic removing material as claimed in claim 1 is characterized in that, in the described oil preparation, the content of isoparaffin is more than or equal to 50 weight %.

3. sheet cosmetic removing material as claimed in claim 2 is characterized in that, in the described isoparaffin, the content of Fancol ID is more than or equal to 90 weight %.

4. sheet cosmetic removing material as claimed in claim 1 is characterized in that, when described O/W emulsion composition (B) leaves standstill under 30 ℃, in one day～one month, is separated into water and other emulsifying composition mutually.

5. sheet cosmetic removing material as claimed in claim 1, it is characterized in that, 1～50 weight % of the aqueous phase of described O/W emulsion composition (B) contains and is selected from ethylene carbonate, Allyl carbonate, hexanediol and 1, one or more in the 2-pentanediol.