WO2016157995A1

WO2016157995A1 - Foamy cosmetic material

Info

Publication number: WO2016157995A1
Application number: PCT/JP2016/053081
Authority: WO
Inventors: 拓也山科; 真樹松尾; 将典岡本
Original assignee: 株式会社マンダム
Priority date: 2015-03-30
Filing date: 2016-02-02
Publication date: 2016-10-06
Also published as: JPWO2016157995A1; KR20170083123A; JP6369923B2; CN107106424A; KR101906857B1

Abstract

The present invention relates to a foamy cosmetic material obtained by charging a stock liquid and a propellant in an aerosol container, wherein the stock liquid contains a powder selected from among the group consisting of a silicone-coated silica and a silica-coated silicone, and the content of the powder in the stock liquid is 5.0 mass% or more. According to the present invention, it is possible to provide a foamy cosmetic material which is an extremely fine and smooth foam and which exhibits excellent foam stability. According to the present invention, it is also possible to provide a foamy cosmetic material which does not cause stickiness and which can impart a dry and silky feeling.

Description

Foam cosmetic

The present invention relates to a foam cosmetic.

¡Powder-mixed products are known to give a smooth feeling to the user. Conventional powder blended products range from powder type, water type, gel type, spray type and so on. These types of products have problems such as loss due to splashing and spillage during application, and stickiness due to the added surfactant. It was difficult to grant.

In order to solve the above problem, for example, an emulsified aerosol composition containing an aqueous stock solution containing a surfactant and powder and a liquefied gas and emulsifying the aqueous stock solution and the liquefied gas is known (patent) Reference 1). Patent Document 1 discloses that the aerosol composition was discharged in the form of foam.

JP 2013-112798 A

However, in Patent Document 1, since a surfactant is used to form a foam, the surfactant is essential, and the problem of stickiness due to this is left. On the other hand, if the amount of the surfactant is reduced, bubbles may not be formed or the shape of the formed foam may change in a short time, so the means of simply reducing the amount of surfactant is adopted There was a problem that it was difficult to do.

Therefore, the object of the present invention is to form fine and smooth foamy foam, and the shape of the formed foam does not change in a short time, that is, the stability of the foam (so-called “foam sticky”. More specifically, the foam. It is to provide a foam cosmetic that can supply excellent foam. Furthermore, the subject of this invention is providing the foam-form cosmetics which can give a smooth feeling without stickiness.

That is, the gist of the present invention is as follows.
A foam cosmetic in which an undiluted solution and a propellant are filled in an aerosol container,
The stock solution comprises a powder selected from the group consisting of silicone-coated silica and silica-coated silicone;
The present invention relates to a foam cosmetic in which the content of the powder in the stock solution is 5.0% by mass or more.

According to the present invention, it is possible to provide a foam cosmetic that can supply foam that is fine and smooth in foam quality and that has excellent foam stability. Furthermore, according to the present invention, it is possible to provide a foam cosmetic that does not cause stickiness and can give a smooth feeling.

The foam cosmetic of the present invention is one in which a stock solution and a propellant are filled in an aerosol container. The foamed cosmetic of the present invention forms bubbles when used, that is, when discharged from an aerosol container, or after adhering to an object.

In the foam cosmetic of the present invention, the stock solution contains a powder (one or more kinds) selected from the group consisting of silicone-coated silica and silica-coated silicone. In the present specification, the “powder selected from the group consisting of silicone-coated silica and silica-coated silicone” may be referred to as “powder A”. By using the powder A, the stock solution and the propellant can form a pickering emulsion particularly effectively. By discharging the contents from the aerosol container, the fine and smooth foam quality is excellent in stability. Bubbles can be formed. Further, although the powder A is blended in a relatively large amount, the powder A becomes difficult to cake in the container, and the storage stability is improved. Hereinafter, each component of the foam cosmetic of the present invention will be described.

The stock solution contains at least powder A and medium. In addition, in this specification, stock solution shall point out all the components other than a propellant among the components with which the aerosol container was filled. As described above, the stock solution should also contain powder insoluble in the medium.

Examples of the powder A include one or more powders selected from the group consisting of silicone-coated silica and silica-coated silicone. Only one type of powder A may be used, or two or more types may be used.

The silicone-coated silica is a powder obtained by coating silica (anhydrous silicic acid) powder with a silicone compound. Although it does not specifically limit as said silicone compound, For example, methyl hydrogen polysiloxane etc. are mentioned.
The silica-coated silicone is a powder obtained by coating a silicone powder with silica (anhydrous silicic acid). The silicone powder is not particularly limited, and examples thereof include cross-linked methylpolysiloxane powder.

The powder A is preferably a powder coated with a polyhydric alcohol from the viewpoint of improving foam stability (foam stickiness) and production stability. That is, the powder A is a powder (one or more kinds of powders) selected from the group consisting of silicone-coated silica coated with a polyhydric alcohol and silica-coated silicone coated with a polyhydric alcohol. It is preferable. It is thought that by further coating silicone-coated silica or silica-coated silicone with polyhydric alcohol, the hydrophobicity of the powder is weakened to some extent, and the balance between hydrophilicity and hydrophobicity becomes more appropriate. Stability is improved. Furthermore, it is preferable to use a powder coated with a polyhydric alcohol because a medium such as water and the powder A can be easily mixed. For this reason, since manufacturing stability improves, it is preferable. The polyhydric alcohol is not particularly limited, and examples thereof include 1,3-butylene glycol (1,3-BG). Powder A can be obtained as a commercial product.

The content of the powder A in 100% by mass of the stock solution is 5.0% by mass or more, preferably 7.0% by mass or more, and preferably 10.0% by mass or more, from the viewpoint of imparting foam formability and smooth feeling. Is more preferable. On the other hand, from the viewpoint of preventing white floating (a phenomenon in which cosmetics appear white after application and drying), the content is preferably 20.0% by mass or less, and more preferably 15.0% by mass or less. When two or more kinds of powder A are contained in the stock solution, the above-mentioned “content of powder A” means the total amount of the contents of all types of powder A in the stock solution.

The particle size of the powder A is not particularly limited. For example, from the viewpoint of imparting a smooth feeling, 0.5 μm or more is preferable, and 1.0 μm or more is more preferable. On the other hand, the O / W emulsion particles in the aerosol container Although it is presumed that the particle size can be reduced, 10.0 μm or less is preferable, and 5.0 μm or less is more preferable from the viewpoint of making the bubbles even smaller and finer. Unless otherwise specified, the particle diameter of the powder A is a volume average (that is, volume average diameter).

The stock solution contains a medium for dissolving or dispersing the powder A. The medium is not particularly limited, and examples thereof include water, ethanol, and polyhydric alcohol. The polyhydric alcohol is not particularly limited, but 1,3-butylene glycol, dipropylene glycol, 1,2-pentanediol, 1,2-hexanediol, 1,2-octanediol, 1,2-decanediol, Examples include glycerin and polyethylene glycol. The content of the medium in 100% by mass of the stock solution is not particularly limited, but is preferably 10.0 to 95.0% by mass, more preferably 30.0 to 93.0% by mass, and 50.0 to 90.0% by mass. % Is more preferable. Only one type of medium may be used, or two or more types may be used.

The stock solution may or may not contain a surfactant. In the present invention, even if the stock solution does not contain a surfactant (in particular, an anionic surfactant, a nonionic surfactant, an amphoteric surfactant), or the content of the surfactant is extremely small. Even in this case, an aerosol foam can be formed, which is one of the features of the present invention. Examples of the surfactant include known surfactants, and examples include an anionic surfactant, a cationic surfactant, a nonionic surfactant, and an amphoteric surfactant. Only one type of surfactant may be used, or two or more types may be used.

The surfactant is not particularly limited, and examples thereof include higher fatty acid salts, alkylbenzene sulfonates, α-olefin sulfonates, alkane sulfonates, α-sulfo fatty acid ester salts, monoalkyl phosphate ester salts, acyl -Anionic surfactant such as L-glutamate; Nonionic surfactant such as polyoxyalkylene alkyl ether, fatty acid mono- or dialkanolamide, polyoxyalkylene type block polymer, glycerin fatty acid ester; quaternary ammonium salt, etc. And cationic surfactants such as carbobetaines, sulfobetaines, imidazolinium betaines, hydroxybetaines, fatty acid amide betaines, and the like.

The content of the surfactant in the stock solution is not particularly limited, but it is preferable that the content of the surfactant is small from the viewpoint of preventing stickiness. In particular, the total amount of the anionic surfactant content, the nonionic surfactant content, and the amphoteric surfactant content in 100% by mass of the stock solution is preferably less than 0.5% by mass, more Preferably it is 0.1 mass% or less, More preferably, it is 0.01 mass% or less, Most preferably, it is 0.005 mass% or less. On the other hand, the preferable lower limit is 0 mass%. By reducing the content of these three surfactants, in addition to the above-mentioned effects, when foam-like cosmetics are applied to the skin, bubbles may break due to sweat or active ingredients may flow down from the skin. There is also an effect that it is suppressed. This is considered to be because re-emulsification due to adhesion of moisture such as sweat is suppressed by reducing the content of these three surfactants. The content of the cationic surfactant in 100% by mass of the stock solution is preferably 0.5% by mass or less, more preferably 0.2% by mass or less, for example, 0.01 to 0.5% by mass. % (Particularly 0.05 to 0.2% by mass). The lower limit of the content may be 0% by mass. When two or more kinds of cationic surfactants are contained in the stock solution, the above-mentioned “content of cationic surfactant” means the total content of all types of cationic surfactants in the stock solution To do.

The stock solution preferably contains a water-soluble polymer (one or more water-soluble polymers) selected from the group consisting of a cellulose-based water-soluble polymer and a natural gum-based water-soluble polymer. By containing the water-soluble polymer, the stability of the foam is improved. In the present invention, when the content of the powder A is small (for example, 12.0% by mass or less), the stability of the foam tends to be relatively low, so that the whitening is further reduced. Therefore, when reducing the content of the powder A, it is particularly effective to add a water-soluble polymer.

Examples of the cellulose-based water-soluble polymer include methyl cellulose, ethyl cellulose, hydroxymethyl cellulose, hydroxyethyl cellulose, hydroxypropyl cellulose, carboxymethyl cellulose and the like.
Examples of the natural gum water-soluble polymer include xanthan gum, gelatin, guar gum, carrageenan, pectin, and locust bean gum.
Only 1 type may be used for a water-soluble polymer, and 2 or more types may be used for it.

The content of the water-soluble polymer in 100% by mass of the stock solution is not particularly limited, but is preferably 0.005% by mass or more and more preferably 0.01% by mass or more from the viewpoint of further improving the stability of the foam. preferable. On the other hand, from the viewpoint of further reducing stickiness, the amount of the water-soluble polymer is preferably 0.3% by mass or less, more preferably 0.25% by mass or less in 100% by mass of the stock solution. When two or more types of water-soluble polymers are contained in the stock solution, the “content of water-soluble polymer” means the total content of all types of water-soluble polymers in the stock solution.

The stock solution is not particularly limited, but may contain components (other components) other than the powder A, the medium, the surfactant, and the water-soluble polymer. For example, perfume; silicone oils such as cyclopentasiloxane, hydrogen dimethicone, caprylyl methicone, methylphenyl polysiloxane, dimethicone; fatty acid esters such as isopropyl myristate, ethylhexyl palmitate, cetyl 2-ethylhexanoate; sorbitol, maltitol, etc. Sugar alcohols; antiseptics such as phenoxyethanol, octoxyglycerin and methylparaben; cooling agents such as menthol, menthyl glyceryl ether, camphor and peppermint oil; anti-inflammatory agents such as dipotassium glycyrrhizinate and stearyl glycyrrhizate; Extracts from plants such as aloe; fungicides such as isopropylmethylphenol, triclosan, benzalkonium chloride; zinc paraphenolsulfonate, chlor Antiperspirants such as droxyaluminum and alum; thickening polymers such as carboxyvinyl polymer; antioxidants such as tocopherol and dibutylhydroxytoluene; octyl methoxycinnamate, octyl dimethoxybenzylidene dioxoimidazolidine propionate, diethylaminohydroxy UV absorbers such as hexyl benzoylbenzoate, t-butylmethoxydibenzoylmethane, octyltriazone, 2-ethylhexyl paramethoxycinnamate; chelating agents such as edetate; whitening agents such as arbutin and ascorbic acid; silica, Powders such as talc and nylon powder may also be included.

Examples of the propellant include known propellants, such as air, nitrogen, carbon dioxide, nitrous oxide and other gases (particularly compressed gas); liquefied petroleum gas (LPG: Liquid Petrolium Gas), dimethyl ether (DME: Dimethyl ether), liquefied gases such as isopentane and fluorocarbon. Only 1 type may be used for a propellant and 2 or more types may be used for it.

As the aerosol container, a known and commonly used container may be mentioned, and it is not particularly limited.

In the aerosol container, the content of the propellant in the total amount of the stock solution and the propellant of 100% by mass is preferably 1.0% by mass or more, and 2.0% by mass or more from the viewpoint of preventing liquefaction of the discharged material. Is more preferable, and 3.0 mass% or more is further more preferable. Moreover, 50.0 mass% or less is preferable, 20.0 mass% or less is more preferable, and 10.0 mass% or less is further more preferable. When two or more types of propellants are used, the “propellant content” means the total amount of all types of propellants.

The foam cosmetic of the present invention can be produced by a known method. For example, there is a manufacturing method in which a stock solution is filled into an aerosol container, the container is clinched by an aerosol valve, a prescribed amount of propellant is filled into the container from a stem, and a spray button is attached.

The internal pressure of the aerosol container of the foam cosmetic of the present invention can be appropriately adjusted depending on the filling amount of the propellant. For example, at 25 ° C., the internal pressure is preferably 0.10 to 0.50 MPa, more preferably 0.15 to 0.39 MPa.

The foam cosmetic of the present invention can be used as, for example, body powder, deodorant agent, skin care agent.

Hereinafter, the present invention will be described in more detail based on examples, but the present invention is not limited only to these examples. The blending amount (content) represents “% by mass” unless otherwise specified. Moreover, all the compounding components were converted into pure components and the compounding amounts were described.

Test example 1
160 g of purified water and 40 g of each powder listed in Table 1 were mixed for 10 minutes at 3000 rpm using a disper mixer (DM) to prepare stock solutions 1-8.

Each stock solution and liquefied petroleum gas (LPG) as a propellant are filled into an aerosol container (capacity: about 100 ml) so that the mass ratio of the stock solution to LPG is stock solution: LPG = 96: 4. A cosmetic preparation was produced.

Next, each foam cosmetic was shaken 5 times with a vertical width of 20 cm under normal temperature and pressure, and immediately after that, about 1 g of foam was discharged onto a black plastic plate. Subsequently, the state of the formed foam was observed and evaluated according to the following evaluation criteria. The results are shown in Table 1.

(Evaluation criteria for foam formation)
○ (Good): Foam was formed, the shape of the foam did not change even after 1 minute, and the release of moisture was not confirmed.
X (Bad): Bubbles were not formed or bubbles were partially formed, but water was released immediately after discharge, and the shape of the bubbles was not maintained after 1 minute.

From Table 1, in the case of foam cosmetics using undiluted solutions 4 to 5, that is, undiluted solution in which the powder is silicone-coated silica (undiluted solution 4) or silica-coated silicone (undiluted solution 5), the surfactant is completely not contained It was found that bubbles were formed even if not included. Moreover, in the foam cosmetics using the stock solution 4 and the stock solution 5, excellent foamy bubbles with fine texture and smoothness were formed. In addition, the foam formed in the foam cosmetic using the stock solution 4 and the stock solution 5 is a so-called foam-like foam that maintains its foam shape even after 1 minute and has excellent temporal stability. It was.
In addition, the average particle diameter of each powder in Table 1 is a value based on the volume average.

Examples 1 to 4 and Comparative Example 1
According to the formulation described in Table 2, each component was mixed for 10 minutes at 3000 rpm using a disper mixer (DM) to prepare a stock solution (about 200 g).
Each foam cosmetic was manufactured by filling an LPG as an undiluted solution and a propellant into an aerosol container (capacity: about 100 ml) so that the mass ratio of the undiluted solution and LPG was undiluted solution: LPG = 96: 4.
In addition, the total amount of each component in the stock solution in Table 2 is 100% by mass.

Examples 5 to 8 and Comparative Example 2
According to the formulation described in Table 2, each component was mixed for 15 minutes using a stirrer to prepare a stock solution (about 200 g).
Each foam cosmetic was manufactured by filling an LPG as an undiluted solution and a propellant into an aerosol container (capacity: about 100 ml) so that the mass ratio of the undiluted solution and LPG was undiluted solution: LPG = 96: 4.

The foam cosmetics obtained in Examples 1-8 and Comparative Examples 1-2 were evaluated as follows. The evaluation results are shown in Table 2.

(1) Foam quality and stability of foam Each foam cosmetic was shaken 5 times with a vertical width of 20 cm under normal temperature and normal pressure, and immediately after that, about 1 g of foam was discharged onto a black plastic plate. Subsequently, the foam quality of the formed foam and the stability of the foam were observed and evaluated based on the following criteria.

(Evaluation criteria for foam quality)
◎ (Excellent): Very fine and smooth ○ (Good): Fine and smooth △ (Available): Slightly rough × (Poor): Bubbles with very rough or broken texture or no bubbles are formed

(Evaluation criteria for foam stability)
A (Excellent): The foam quality did not change even after 3 minutes from the discharge.
○ (Good): The foam quality did not change even after 1 minute from the discharge.
Δ (usable): One minute after discharge, although water was released, the foam shape was maintained.
X (Bad): No foam was formed, or water was released immediately after ejection, and the foam shape was not maintained after 1 minute from ejection.

(2) Smooth feeling Each foam cosmetic was shaken 5 times with a vertical width of 20 cm under normal temperature and normal pressure. Immediately after that, about 0.3 g of foam was discharged onto the back of the hand and blended by hand. The smooth feeling at that time was subjected to sensory evaluation based on the following criteria.
The smooth feeling means a feeling that is low in friction and good in slipping and that is not sticky and dry.

(Evaluation criteria for smooth feeling)
◎ (Excellent): I felt very strong and smooth.
○ (Good): A strong and smooth feeling was felt.
Δ (Available): A slight smooth feeling was felt.
X (defect): A smooth feeling was not felt.

As can be seen from the results in Table 2, the foam cosmetics (Examples) of the present invention formed fine foam with smooth texture, and also had excellent foam stability. Furthermore, it was a cosmetic that had no stickiness and was able to obtain a smooth feeling when applied. On the other hand, when the content of the powder was less than 5% by mass (Comparative Example), the foam quality and foam stability were lowered.

In addition, after evaluation of said (2), in any case of Example, stickiness was not felt on the back of the hand which applied foam cosmetics.
Further, after the evaluation of (2) above, in Examples 1, 5, and 6, no or little whitening was observed on the back of the hand to which the foam cosmetic was applied. In Examples 2, 3, and 7, although white floatation was observed to some extent, the powder was in close contact with the skin, and it was at a level where no scattering occurred even when the coated surface was touched. On the other hand, in Examples 4 and 8, a strong white float in which the powder was scattered when the coated surface was touched was observed.

Furthermore, about 40 g of the stock solution of foam cosmetic of Example 6 was put in a glass bottle with a volume (100 ml) and stored under conditions of 5 ° C., 25 ° C., and 40 ° C. As a result, under any condition, even if two months passed, no sedimentation or caking of the powder occurred, and the storage stability was excellent.

The detail of each component in the said test example and an Example is as follows.
Cross-linked polystyrene (Aika Industry Co., Ltd., trade name: Ganzpearl GS-1105M)
Silicone (Momentive Performance Materials Japan GK, product name: Tospearl 2000B ^* )
Nylon powder (Aika Industry Co., Ltd., trade name: Gantz Pearl GPA-550)
Silicone-coated silica (Miyoshi Kasei Co., Ltd., trade name: SI-SB300)
Silica-coated silicone (Toray Dow, trade name: DOW CORNING 9701 COSMETIC POWDER)
Silica (JGC Catalysts & Chemicals Co., Ltd., trade name: Silica Micro Bead P-1500M)
Talc (Nihon Talc Co., Ltd., trade name: Talc MS)
Urethane (Toyo Pigment Co., Ltd., trade name: PLASTIC POWDER D-800)
1,3BG, silica-coated silicone (Toray Dow, trade name: DOW CORNING EP 9801)
Xanthan gum (DSP Gokyo Food & Chemical Co., Ltd., trade name: Echo Gum T)
Hydroxypropylcellulose (Nippon Soda Co., Ltd., trade name: hydroxypropylcellulose)

Hereinafter, formulation examples of the foam cosmetic according to the present invention will be shown. In addition, content is mass%.

Formulation Example 1 (Moisturizing cosmetic)
<Undiluted solution>
1,3BG, silica-coated silicone 10.0% by mass
Concentrated glycerin 3.0% by mass
1,3-butylene glycol 3.0% by mass
Hydroxymethyl cellulose 0.1% by mass
Purified water balance 100.0% by mass
<Propellant>
LPG 100.0% by mass
Stock solution: propellant (mass ratio) = 90: 10

Formulation Example 2 (Deodorant)
<Undiluted solution>
Silicone-coated silica 10.0% by mass
Hydroxymethyl cellulose 0.05% by mass
Zinc paraphenolsulfonate 0.1% by mass
Benzalkonium chloride 0.1% by mass
Purified water balance 100.0% by mass
<Propellant>
LPG 100.0% by mass
Stock solution: propellant (mass ratio) = 95: 5

Claims

A foam cosmetic in which an undiluted solution and a propellant are filled in an aerosol container,
The stock solution comprises a powder selected from the group consisting of silicone-coated silica and silica-coated silicone;
A foam cosmetic in which the content of the powder in the stock solution is 5.0% by mass or more.
The foam cosmetic according to claim 1, wherein the powder is a powder further coated with a polyhydric alcohol.
The foam cosmetic according to claim 1 or 2, wherein the content of the powder in the stock solution is 5.0 mass% or more and 20.0 mass% or less.
The foam makeup according to any one of claims 1 to 3, wherein the stock solution further contains a water-soluble polymer selected from the group consisting of a cellulose-based water-soluble polymer and a natural gum-based water-soluble polymer. Fee.