JP5505933B2 - Two-component sheet cosmetic and method of using the same - Google Patents

Description

TECHNICAL FIELD The present invention relates to a two-part sheet-shaped cosmetic, and more specifically, by preparing an emulsion of a specific composition in a sheet material at the time of use, the emulsified state of the cosmetic, the sheet material as compared with a conventional sheet-shaped cosmetic Improves the state of impregnation and flexibility as a sheet-like cosmetic, expands the range of cosmetics that can be impregnated, has excellent moisturizing function, feeling of use and convenience during use, and can improve skin condition The present invention relates to a time-adjustable two-part sheet cosmetic.

Examples of the form of the sheet-like cosmetic material include those in which the cosmetic material is pre-impregnated in the sheet material, and those in which the cosmetic material is applied or impregnated in the sheet material at the time of use. Sheet cosmetics are frequently used as packs, wiping agents, and the like, and can be used not only for the whole or partial use of the face, but also for rough parts such as the neck, shoulders, arms or legs. And since the high moisturizing effect etc. are acquired by the obstruction | occlusion effect of the sheet material impregnated with cosmetics, it plays an important role in maintaining the health and beauty of the skin.

In recent years, in order to obtain a further effect on the skin, a sheet-like cosmetic using a cosmetic containing an oil component has attracted attention. Among such sheet-like cosmetics, those in which an oil component is blended into an emulsion are subject to stability as a product due to separation of the oil over time or poor impregnation into the sheet material. was there.

In order to solve these problems, in a form where the cosmetic material is impregnated in advance with the sheet material, for example, in order to improve the stability, the oil-in-water oil prepared in a specific range of the particle system of the oil droplets of the emulsion There is a sheet-like cosmetic applicator impregnated with a mold emulsion composition (for example, see Patent Document 1). In addition, in order to sufficiently contain the oil component and improve the feeling of use and stability, a sheet shape impregnated with an O / W type emulsion prepared with a specific ratio of the oil component and the surfactant. There is an example of cosmetics (see Patent Document 2).

In the form of applying or impregnating a cosmetic material to a sheet material at the time of use, as a cosmetic material to be used, a two-component cosmetic material is mixed at the time of use, and prepared into a predetermined dosage form and then applied to the skin before use. It is also known and is an effective method for supplementing the skin with unstable drugs in the formulation. For example, in order to provide a cosmetic having excellent stability and usability, an oily first agent containing an oil-soluble vitamin and a vegetable oil, an extract or culture solution of a specific plant, seaweed or fungus, There is a cosmetic preparation at the time of use (see, for example, Patent Document 3) in which a lotion-like second agent containing a specific thickener is mixed at the time of use. In addition, there is also a structure in which the cosmetic material is sealed to prevent alteration and the sheet material is impregnated at the time of use. For example, an easily breakable capsule in which a pack agent component is sealed is incorporated in a pack sheet in which two types of sheets are stacked, and the easily breakable capsule is ruptured during use to allow the pack agent component to bleed out of the pack sheet. There are beauty pack materials for various parts of the body (see, for example, Patent Document 4).

However, in the case of the sheet-like cosmetic disclosed in Patent Document 1, a special emulsification apparatus or a combination component is required to reduce the particles of the emulsion. Therefore, there are problems that the cost is high, productivity is not sufficiently secured, or emulsified particles after impregnation are likely to move depending on the type of the sheet material, resulting in uneven cosmetics. Furthermore, when a sheet-shaped cosmetic impregnated with an emulsion is packaged in a bag-like container, moisture tends to evaporate over time from the viewpoint of surface area, and water droplets are generated in the bag-like container. There is also a problem that the emulsified state is more likely to be worse than the filled emulsified cosmetic. In the case of the sheet-like cosmetic described in Patent Document 2, in order to stably blend a sufficient amount of oil into the emulsion, the amount of the necessary surfactant increases, and the feeling of stickiness on the skin increases, which is used. There is a problem in terms of feeling. In the case of the cosmetics described in Patent Document 3, it is necessary to first prepare by mixing two components sealed in separate containers, and then impregnate separately prepared sheet material. There is a problem. In the case of the pack agent described in Patent Document 4, in order to permeate the whole with only the medicine in the capsule, the size of the sheet material is limited, and in order to keep the emulsion in the capsule stable, There are limiting conditions such as the amount of oil that can be blended is limited. In any case, in order to impregnate the dry sheet material with the emulsion, the amount of the cosmetic is increased, and the flexibility as a sheet-like cosmetic is not sufficiently obtained, and the feeling of stiffness at the time of use is obtained. There is also a problem in the feeling of use such as the occurrence of

JP 2000-503681 Gazette JP 2002-249423 A JP 2006-193495 A JP 2005-154274 A

As described above, it is possible to stably impregnate a sheet with an emulsion containing a large amount of an oil component to prepare a sheet cosmetic with excellent usability, and to provide a simple and easy-to-use cosmetic preparation at the time of use. It was difficult to do.

Therefore, in the present invention, even if an emulsion containing a sufficient oil component is used, the emulsified state of the cosmetic, the impregnated state of the sheet material, and the sheet-like cosmetic are compared with the conventional sheet-like cosmetic. A two-component sheet-form cosmetic that is prepared at the time of use, which improves flexibility, expands the range of cosmetics that can be impregnated, has excellent moisturizing function, usability and convenience during use, and can improve skin condition. The purpose is to provide.

As a result of intensive studies to solve the above problems, the present inventor contains an oily component and a surfactant in a sheet material preliminarily impregnated with a cosmetic first agent containing a specific water-soluble polymer. By adding the second agent at the time of use to prepare an emulsion, it was found that the above problems can be solved, and the present invention has been completed.

That is, the two-part sheet cosmetic of the present invention is a first agent containing at least one water-soluble polymer among a carboxyvinyl polymer and a copolymer of a long-chain alkyl acrylate monomer and an olefinically unsaturated carboxylic acid monomer. Is pre-impregnated into a sheet material, and an emulsion is prepared by adding a second agent containing an oil component and 5 to 15% by mass of a surfactant at the time of use.

According to the present invention, the emulsified state of the cosmetic material, the impregnated state of the sheet material, and the flexibility as the sheet-shaped cosmetic material can be used as compared with the conventional sheet-shaped cosmetic material, even when an emulsion containing a sufficient oil component is used. A two-component type sheet-form cosmetic that is prepared at the time of use, which can improve the properties, expand the selection range of cosmetics that can be impregnated, has excellent moisturizing function, usability and convenience during use, and can improve the skin condition. Can be provided.

Hereinafter, the present invention will be described in detail.

The two-component sheet-like cosmetic of the present invention is composed of a cosmetic first agent, a cosmetic second agent, and a sheet material. The first agent is pre-impregnated into the sheet material, and by adding the second agent at the time of use, the two agents are mixed in the sheet material to prepare an emulsion, and at the same time, the emulsion is stably impregnated into the sheet material. Can do. Normally, when a dry sheet material is impregnated with an emulsion, the emulsion particles collapse in the process of permeating into the sheet material, and the oil adsorbs, and the stability of the emulsion itself is impaired. There is. However, in the present invention, since the first cosmetic material is impregnated in the sheet material in advance, the fibers of the sheet material are wet, and the second cosmetic material to be added later is distributed uniformly. Stable emulsified particles can be prepared. In addition, when the dry sheet material is impregnated with the emulsion, the sheet material may feel stiff or poor on the skin, or may feel sticky due to poor penetration and a large amount of impregnation. There's a problem. On the other hand, the sheet-like cosmetic composition of the present invention is superior in the touch when used because the fibers of the sheet material are wet in advance, so that the flexibility of the sheet material is increased, and the poor permeability of the emulsion is taken into consideration. Therefore, it is not necessary to make the impregnation amount excessive, so that the optimum impregnation amount can be prepared at the time of use.

The first cosmetic agent in the present invention contains at least one water-soluble polymer among a carboxyvinyl polymer and a copolymer of a long-chain alkyl acrylate monomer and an olefinically unsaturated carboxylic acid monomer. The carboxyvinyl polymer is a water-soluble polymer having a carboxyl group containing acrylic acid as a main chain and allyl sucrose, pentaerythritol and the like as a crosslinking agent. A commercially available product can be used as the carboxyvinyl polymer, and examples thereof include “Carbopol 940”, “Carbopol 941”, “Carbopol 980”, “Carbopol 981” (manufactured by Lubrizol Corporation).

The copolymer of a long-chain alkyl acrylate monomer and an olefinically unsaturated carboxylic acid monomer is preferably a water-soluble copolymer obtained by copolymerizing 1 to 50% by mass of a long-chain alkyl acrylate monomer and 50 to 99% by mass of an olefinically unsaturated carboxylic acid monomer. Functional polymer. Examples of the long-chain alkyl acrylate monomer include alkyl acrylates having 10 to 30 carbon atoms such as decyl acrylate, lauryl acrylate, palmityl acrylate, stearyl acrylate, and behenyl acrylate, preferably alkyl acrylates having 12 to 22 carbon atoms and corresponding methacrylates. One or more monomers selected from the group can be mentioned. Examples of the olefinically unsaturated carboxylic acid monomer include olefins such as acrylic acid, methacrylic acid, α-chloro-acrylic acid, α-phenylacrylic acid, sorbic acid, cinnamic acid, maleic acid, fumaric acid, and maleic anhydride. And one or more monomers selected from the group of polymerizable compounds containing at least one carboxyl group. Acrylic acid which is easily available and has an excellent polymerization ability is preferable. Copolymers of long-chain alkyl acrylate monomers and olefinically unsaturated carboxylic acid monomers include methylene bisacrylamide, allyl acrylate, methallyl methacrylate, divinyl ether, allyl sucrose, trimethylol propane triacrylate, trimethylol. A copolymer having a crosslinked structure obtained by polymerizing an olefinic polyfunctional monomer such as propanetrimethacrylate or glyceryltriacrylate can be preferably used for preparing the properties of the copolymer. At this time, the blending amount of the olefin polyfunctional monomer is preferably 0.01 to 4% by mass, more preferably 0.2 to 1.% by mass based on the total amount of the long-chain alkyl acrylate monomer and the olefin polyfunctional monomer. 0% by mass. These copolymers can be produced by known methods (for example, methods described in JP-A-51-6190, JP-A-2-39312, etc.). The average molecular weight of the produced copolymer is preferably about 500,000 to 5,000,000. As the copolymer of the long-chain alkyl acrylate monomer and the olefinically unsaturated carboxylic acid monomer, commercially available products can be used. For example, “Pemulen TR-1”, “Pemulene TR-2”, “Carbopol 1342” ( Any of them may be Lubrizol Corporation).

A carboxyvinyl polymer and a copolymer of a long-chain alkyl acrylate monomer and an olefinically unsaturated carboxylic acid monomer can be used after neutralizing with a neutralizing agent. Examples of the neutralizing agent include alkali metal hydroxides such as sodium hydroxide and potassium hydroxide, basic amino acids such as lysine, arginine, histidine and ornithine, triethanolamine, 2-amino-2-methyl-1-propanol, Examples thereof include organic amines such as tris (hydroxymethyl) aminomethane, 2-hydroxypropylethylenediamine, and diisopropanolamine, and basic polypeptides.

Any one of the water-soluble polymers may be used alone, or two may be used in combination. It is preferable that the compounding quantity is 0.01-2 mass% in total based on the total amount of the 1st agent, More preferably, it is 0.05-1 mass%. Exceeding the upper limit of the blending amount may cause kinking and is not preferable from the viewpoint of feeling of use, and if the blending amount is less than the lower limit, the stability when the emulsion is prepared by mixing with the second agent can be maintained. There is a problem that the emulsion does not sag from the sheet.

Moreover, you may use for the 1st agent in this invention the other water-soluble polymer which can be generally used for cosmetics within the qualitative and quantitative range which does not impair the effect of this invention. Examples of natural water-soluble polymers include guar gum, locust bin gum, quince seed, carrageenan, galactan, gum arabic, tragacanth gum, pectin, mannan, starch, xanthan gum, dextran, succinoglucan, curdlan, hyaluronic acid, gelatin, casein, Examples include albumin and collagen. Examples of semi-synthetic water-soluble polymers include cellulose-based polymers such as methyl cellulose, ethyl cellulose, hydroxyethyl cellulose, hydroxypropyl cellulose, carboxymethyl cellulose or salts thereof (for example, sodium salt, potassium salt, etc.), methyl hydroxypropyl cellulose; And starch-based polymers such as carboxymethyl starch and methyl starch; alginic acid-based polymers such as propylene glycol alginate and alginate; polysaccharide derivatives and the like.

The cosmetic second agent in the present invention contains an oil component and 5 to 15% by mass of a surfactant. The oil component is not particularly limited as long as it can be generally used for cosmetics. For example, argan oil, olive squalane, rice squalane, rice germ oil, jojoba oil, sunflower oil, safflower oil, olive oil, macadamia nut oil, sunflower oil, avocado oil, canola oil, kyounin oil, grape seed oil, carrot oil, medfoam oil , Oils derived from plants such as rosehip oil, shea fat, cacao butter or hydrogenated products thereof, dimethylpolysiloxane, methylphenylpolysiloxane, silicone oil such as cyclic silicone, paraffin, liquid paraffin, petrolatum, olefin oligomer, squalane, etc. Hydrocarbons such as octyldodecyl myristate, cetyl palmitate, isostearyl isostearate and isopropyl myristate, glyceryl 2-ethylhexanoate, glyceryl tricaprylate and tripa Triglycerides such as Michin glyceryl and the like.

Any of the above oily components may be used alone or in combination of two or more. The blending amount is preferably in the range of 85 to 95% by mass based on the total amount of the second agent. When the upper limit of the blending amount is exceeded, a sufficiently uniform emulsion may not be obtained when mixed with the first agent, and when the blending amount is less than the lower limit, the sheet cosmetic after mixing with the first agent In some cases, sufficient moisturizing effect may not be obtained.

The surfactant contained in the cosmetic second agent in the present invention is not particularly limited as long as it can be generally used for cosmetics. For example, nonionic surfactants such as polyoxyethylene alkyl ether, polyoxyethylene fatty acid ester, polyoxyethylene glyceryl ether fatty acid ester, polyoxyethylene hydrogenated castor oil, polyhydric alcohol fatty acid ester, polyglycerin fatty acid ester, and sucrose ester It is done.

Any of the above surfactants may be used alone, or two or more thereof may be used in combination. The blending amount is 5 to 15% by mass based on the total amount of the second agent. Exceeding the upper limit of the blending amount may cause a sticky feeling and reduce the feeling of use, and if the blending amount is less than the lower limit, a sufficiently uniform emulsion cannot be obtained when mixed with the second agent. There is.

The mixing ratio of the first agent and the second agent varies depending on the formulation of each agent, but is preferably in the range of 30: 1 to 10: 3, more preferably 20: 1 to 5: 1.

The sheet material in the present invention is not particularly limited as long as it can be impregnated with cosmetics, and all sheet-like supports that are usually used as cosmetics can be suitably used. Examples thereof include cotton, pulp, rayon, acrylic, nylon, polyurethane, silk, polyester, polypropylene, polyester-polyethylene, polypropylene-polyethylene, and ethylene-vinyl alcohol copolymer. These may be used alone or in combination of two or more. The basis weight, usability and the time of expanding the sheet, from the viewpoint of adhesion to the skin, preferably 15~120g / ^{m 2,} more preferably from 30 to 100 g / ^{m 2.}

In the present invention, as a method of impregnating the first cosmetic material into the sheet material in advance, a known impregnation means for the sheet-shaped cosmetic material may be used.

In the two-pack type sheet-like cosmetic of the present invention, the sheet material pre-impregnated with the first cosmetic agent can be stored in an arbitrary container. The container in which the sheet material is stored can be used as it is as a mixing container at the time of preparation. The container shape is preferably a bag shape that can easily store the sheet material. Examples of the material of the container include aluminum and polyethylene, but those having flexibility are preferable. Moreover, what is necessary is just to fill cosmetics 2nd agents, for example in containers, such as a tube, a bottle, and an aluminum pouch. When using the two-component sheet-shaped cosmetic of the present invention, the container containing the sheet material is opened, the second cosmetic agent is introduced into the container, and the two agents are mixed in the container as they are to obtain an emulsion. May be prepared. If the container has a bag-like flexibility, by applying pressure to the bag-like container when mixing the two agents, uniformly impregnate the emulsion containing a sufficient oil component without soiling the hands. Sheet-like cosmetics can be produced.

In addition, the first agent and the second agent in the present invention include surfactants and moisturizers other than those usually used in cosmetics, if necessary, within the qualitative and quantitative ranges that do not impair the effects of the present invention. , Oils, fragrances, preservatives, antioxidants, chelating agents, chemicals, water and the like.

EXAMPLES Next, although an Example demonstrates this invention still in detail, this invention is not limited at all by these Examples. In addition, all compounding quantities are the mass%.

Table 1 shows formulation examples 1 to 4 used as the first agent in this example. Each formulation is prepared by mixing components (1) to (9) and (11), adding (10) to neutralize, and then uniformly dispersing with a homomixer to prepare a transparent cosmetic first agent. did. Formulation Example 2 does not include (7) and (8), which are water-soluble polymers. Formulation Example 3 contains only (7) as a water-soluble polymer, and Formulation Example 4 contains only (8).

Table 2 shows formulation examples 5 to 9 used as the second agent in this example. For each formulation, a cosmetic second agent was prepared by a conventional method for oily cosmetics. In addition, the prescription example 5 is less than 5% by mass of the oil component, and the prescription example 9 similarly exceeds 15% by mass.

Example of a two-part sheet cosmetic prepared by impregnating a sheet material with any one of Formulation Examples 1 to 4 in advance as a first agent and adding any of Formulation Examples 5 to 9 as a second agent later And the comparative example was evaluated. Table 3 shows Examples and Comparative Examples prepared by combining the first agent and the second agent obtained by the above-described formulation and method. As the sheet material, 100% cotton, basis weight 60 g / ^{m 2,} the cut-out area for the entire face were from 0.037m ^2. After 20 g of the first agent is impregnated into the sheet material, it is stored in an aluminum bag. After that, 2 g of the second agent is added to the aluminum bag and mixed with the first agent, and then the aluminum bag is kept uniform for 30 seconds. A sheet cosmetic impregnated with the emulsion was prepared by pushing from above. About the two-part type sheet-like cosmetic impregnated with the emulsions of Examples and Comparative Examples thus obtained, the emulsified state, dripping from the sheet, moist feeling, stickiness, and the following methods and standards evaluated. The results are also shown in Table 3.

<Emulsified state>
After preparing the said Example and a comparative example, the aluminum bag was cut open and the emulsification state was evaluated by the following reference | standard.
◎: Emulsified well ○: Slightly oil-floating but maintained in an emulsified state △: Many oil-floating and non-uniform ×: Separated <Drip from the sheet>
After preparing the above Examples and Comparative Examples, when the sheet was taken out from the aluminum bag, the impregnated emulsion was evaluated for the absence of dripping according to the following criteria.
◎: No sagging ×: Sagging <Moist feeling, no stickiness>
About the above-mentioned Examples and Comparative Examples, 10 female panelists in their 20s to 40s used it for 15 minutes on the face after washing their face for a moist feeling and no sticky feeling, good (3 points), somewhat good (2 points) ), Normal (1 point), and bad (0 point). It was judged that the desired effect was not obtained when the average score was less than 1.

As described above, Examples 1 to 5 were excellent in the emulsified state after impregnation, free from dripping from the sheet, and excellent in moist and sticky feeling.

Next, the first agent is pre-impregnated in the sheet material, and the second agent is added later to prepare an emulsion, and the first agent and the second agent are mixed in advance. An emulsion was prepared, and then Comparative Example 8 in which the sheet material was impregnated with the emulsion was evaluated. As common conditions, 20 g of Formulation Example 1 was used for the first agent, 2 g of Formulation Example 7 was used for the second agent, 50% pulp, 50% rayon, 50 g / m ² basis weight, and cut out for the entire face. The one with an area of 0.037 m ² was used. In Example 6, the sheet material was impregnated with the first agent, and then the sheet material was accommodated in an aluminum bag, and then the second agent was put into the aluminum bag and mixed with the first agent, so that it became uniform. The sheet-like cosmetic impregnated with the emulsion was prepared by pressing the product from the top of the aluminum bag by hand for 30 seconds. In Comparative Example 8, the first agent and the second agent were mixed in a separate container in advance to create an emulsion, and then put into an aluminum bag containing a sheet material, and pressed by hand from the top of the aluminum bag for 30 seconds. Is. Each emulsified state, impregnated state,
Table 5 shows the results of evaluation with the following methods and criteria for usability, sheet flexibility, and touch.

<Emulsified state>
After preparing Example 6 and Comparative Example 8, the aluminum bag was opened and the emulsified state was evaluated according to the following criteria.
◎: Emulsified well ○: Slightly oil floating but kept in emulsified state △: Many oil floating and non-uniform ×: Separated <Impregnated state>
After preparing Example 6 and Comparative Example 8, the aluminum bag was opened and the impregnation state was evaluated according to the following criteria.
A: The emulsion is uniformly impregnated in the sheet. O: The dry part is 10% or less. Δ: The dry part is more than 10% and less than 40%. X: The dry part is 40% or more <Usability>
About Example 6 and Comparative Example 8, 10 female panelists in their 20s to 40s are very easy to use (3 points), easy to use (2 points), and normal (1 point) when preparing each. ), Which was difficult to use (0 points), was evaluated in four stages, and the number of respondents and the average score were shown. It was judged that the desired effect was not obtained when the average score was less than 1.
<Flexibility of sheet, feel>
Regarding the above examples and comparative examples, 10 female panelists in their 20s to 40s have very good (3 points) and good (2 points) regarding the flexibility and feel of the sheet when used on the face after washing for 15 minutes. Evaluation was made in four stages, normal (1 point) and bad (0 point), and the number of respondents and the average score were shown. It was judged that the desired effect was not obtained when the average score was less than 1.

As described above, the two-part preparation sheet-type cosmetic preparation impregnated with the emulsion of the example according to the present invention has a high moisturizing function, the stability and impregnation of the emulsion, and the feel of the sheet. It was also excellent from the viewpoint of goodness.

Claims (5)

A sheet material is impregnated with a first agent containing at least one water-soluble polymer among a copolymer of a carboxyvinyl polymer and a long-chain alkyl acrylate monomer and an olefinically unsaturated carboxylic acid monomer. A two-part type sheet-form cosmetic characterized in that an emulsion is prepared by adding a second agent containing -15% by mass of a surfactant during use. The two-part sheet cosmetic according to claim 1, wherein the second agent comprises 85 to 95% by mass of an oil component and 5 to 15% by mass of a surfactant. The two-component type sheet cosmetic according to claim 1 or 2, wherein the mixing ratio of the first agent and the second agent is 10: 1. The two-part sheet cosmetic according to any one of claims 1 to 3, wherein the sheet material is sealed in a bag-like container. 5. The two-component sheet-like sheet according to claim 4, wherein the bag-shaped container is opened and the second agent is added, and then the bag-shaped container is pressed and mixed to emulsify the first agent and the second agent. How to use cosmetics.