JP2002053430A - Foamy cosmetic - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a foamy cosmetic capable of providing creamy foam of fine texture, good in slip of the foam and further providing a good feeling of use when a cosmetic stock solution is discharged. SOLUTION: This foamy cosmetic is characterized by comprising polystyrene or a styrene copolymer, a surfactant, water and a propellant.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to a foam cosmetic,
More specifically, regarding an aerosol-type foam cosmetic, the purpose is to discharge the cosmetic undiluted solution, it is extremely fine,
An object of the present invention is to provide a foamy cosmetic which can provide a creamy foam, has good foam elongation, and provides a good feeling in use.

[0002]

2. Description of the Related Art Conventionally, foam cosmetics which are used by discharging a cosmetic undiluted solution from a container in the form of foam have been widely used.
The foam cosmetics include aerosol foam cosmetics that form foam using a propellant and non-aerosol foam cosmetics that form foam without using a propellant. The aerosol-type foam cosmetic is filled with a propellant such as a liquefied gas and a cosmetic undiluted solution into a pressure-resistant closed container as a content liquid, and simultaneously discharges the cosmetic undiluted solution with the propellant and is included in the cosmetic undiluted solution. The propellant is vaporized to swell the stock solution to form bubbles. On the other hand, non-aerosol foam cosmetics use a foam discharge container that can be mixed with air and discharged when discharging the content liquid as a container. To form. Since the foam formed by the foam discharge container is inferior in foam quality to the foam formed by the propellant, an aerosol foam cosmetic excellent in foam quality is widely used.

[0003]

In the case of aerosol-type foam cosmetics which form foam using a propellant, the foam quality such as foaming power, stability, and fineness of texture is not satisfactory. Conventionally, attempts have been made to improve the foam quality. For example, in a conventional aerosol-type foam cosmetic, the HLB of a surfactant blended in a cosmetic solution is used.
The foam quality has been improved by changing the viscosity or adjusting the viscosity by blending a specific polymer compound. However, when an aerosol-type foam cosmetic using a surfactant is used as a hair cosmetic,
Since the moisture resistance of the hair is impaired, there is a disadvantage that the hairstyle is easily broken, especially under high humidity, and the hair has a sticky feeling. In addition, when a polymer compound is used, there is a disadvantage that the hair has a sticky feeling and the texture at the time of use is deteriorated. further,
Even if surfactants and specific polymer compounds are blended,
The foam quality formed was still not satisfactory.

[0004] The present inventors have conducted intensive studies in view of the above-mentioned circumstances, and as a result, by blending a specific polymer compound, that is, polystyrene or styrene copolymer, into the cosmetic stock solution, the cosmetic stock solution was prepared. The foam formed from is extremely fine, creamy, stretches well and gives a good feeling of use, and even when used as a hair cosmetic, adversely affects the moisture resistance of the hair The present invention has been found to have a setting force capable of maintaining a hairstyle for a long time without giving a good feeling, and to provide a good feeling of use without giving a sticky feeling, thereby completing the present invention.

[0005]

That is, the invention according to claim 1 relates to a foam cosmetic comprising a polystyrene or styrene copolymer, a surfactant, water and a propellant. The invention according to claim 2 is characterized in that the styrene copolymer is an acrylamide / styrene copolymer, acrylic acid / alkyl acrylate / styrene copolymer, styrene / vinylpyrrolidone copolymer, styrene / isoprene copolymer 2. The foam cosmetic according to claim 1, comprising at least one of acrylic acid / styrene / ammonium methacrylate copolymer. Claim 3
The present invention relates to the foam cosmetic according to claim 1 or 2, wherein the surfactant is a cationic surfactant. The invention according to claim 4 relates to the foam cosmetic according to any one of claims 1 to 3, which contains a film-forming substance. The invention according to claim 5 is
The film-forming substance may be vinylpyrrolidone / N, N-dimethylaminoethyl methacrylic acid copolymer, acrylic resin alkanolamine, polyvinylpyrrolidone, vinyl methyl ether / maleic acid monoester, N-methacryloyloxyethyl N, N-dimethyl The foam cosmetic according to claim 4, comprising one or more of ammonium-α-N-methylcarboxybetaine / alkyl methacrylate copolymer. The invention according to claim 6 relates to the foam cosmetic according to any one of claims 1 to 5, which contains a lower alcohol.

[0006]

BEST MODE FOR CARRYING OUT THE INVENTION The foam cosmetic according to the present invention contains, as essential components, a polystyrene or styrene copolymer, a surfactant, water, and a propellant. The first essential component in the present invention is a polystyrene or styrene copolymer. The monomer copolymerized with the styrene monomer of the styrene copolymer is not particularly specified, but acrylic acid, acrylic ester, acrylic amide, butyl acrylate,
Methacrylic acid, methacrylic acid ester, methacrylic acid amide, butyl methacrylate, vinylpyrrolidone, silicone, vinyl acetate and the like can be exemplified, and in particular, acrylic acid, acrylic acid amide, isoprene, acrylic acid ester, methacrylic acid, methacrylic acid ester , Vinylpyrrolidone, methacrylamide and the like are preferably used. In the present invention, a styrene copolymer composed of one of these monomers and a styrene monomer may be used, or a styrene copolymer composed of two or more of these monomers and a styrene monomer may be used. A polymer may be used.

The number average molecular weight of the polystyrene or styrene copolymer is not particularly limited, but is preferably 1,000 to 1,000.
Preferably 1,000,000, 2,000
It is desirable to set it to 500,000. The reason for this is
If the number average molecular weight is less than 1,000, the foam quality cannot be improved, and if it exceeds 1,000,000, the film formed on the hair becomes hard when used as a cosmetic for hair. This is because stiffness occurs and the feeling of use deteriorates, and in any case, it is not preferable.

In the present invention, only one of the above-mentioned polystyrene or styrene copolymer may be used,
Two or more kinds may be used as a mixture. The amount of the polystyrene or styrene copolymer is not particularly limited, but is preferably 0.1 to 20.0% by weight, more preferably 0.5 to 10.0% by weight in the cosmetic.
The reason is that if the amount is less than 0.1% by weight, a sufficient effect of improving the foam quality cannot be obtained, and even if the amount exceeds 20.0% by weight, no further effect can be expected. Not only that, since flaking easily occurs when used as a cosmetic for hair, for example, it is not preferable in any case.

The polystyrene used in the present invention includes Nanospheres 100 Hydrophilic (Ex.
symol) and Styrene MC White (trade name, manufactured by Ichimaru Falco). Among styrene copolymers, acrylamide / styrene copolymers are trade names of Iodosol GH-52 (manufactured by NSC) and trade names of Ly
tron318 (manufactured by Morton International), etc .; acrylic acid / alkyl acrylate / styrene copolymer; iodozol GH41 (manufactured by NSC); and styrene / vinyl pyrrolidone copolymer: Antara 4
30 (manufactured by ISP), Polectron 430 (manufactured by ISP), and the like as styrene-isoprene copolymer
aton D-116 (manufactured by Shell) is a trade name of acrylic acid / styrene / ammonium methacrylate copolymer.
Syntran 5002 (manufactured by Inter polymer) and the like can be exemplified.

[0010] The second essential component in the present invention is a surfactant. The surfactant used in the present invention is not particularly limited as long as it is blended in a cosmetic material, and cationic surfactants, anionic surfactants, amphoteric surfactants, and nonionic surfactants are used. Any of these can be suitably used. Specifically, alkyltrimethylammonium chloride such as cetyltrimethylammonium chloride, lauryltrimethylammonium chloride, stearyltrimethylammonium chloride as a cationic surfactant,
Examples thereof include dialkyldimethylammonium chloride such as dicetyldimethylammonium chloride, dilauryldimethylammonium chloride, and distearyldimethylammonium chloride, and benzalkonium chloride.

Examples of the anionic surfactant include higher fatty acid soaps such as tallow fatty acid soap, coconut oil fatty acid soap, and palm oil fatty acid soap, polyoxyethylene alkyl ether ammonium sulfate, polyoxyethylene alkyl ether diethanolamine sulfate, lauroylmethyl. Higher alcohol sulfates such as sodium taurine are converted to N-acylglutamic acids such as ammonium acyl N-methyltaurate, sodium N-acylsarcosinate, sodium N-acylsarglutamate, and triethanolamine N-acylsarglutamate. Examples thereof include salts, phosphoric acid ester salts such as polyoxyethylene alkyl phenyl ether phosphoric acid and sodium polyoxyethylene alkyl phenyl ether phosphate.

As the amphoteric surfactant, any of betaine type, amino acid type, imidazoline type and lecithin type can be suitably used. Specifically, lauryl dimethyl amino acetate betaine, cetyl amide dimethyl amino acetate betaine, -Stearyl-1-hydroxyethyl-1-
Examples thereof include carboxymethyl imidazolinium betaine, alkyl diaminoethyl glycine chloride solution, sodium β-laurylaminopropionate, and 2-alkyl-N-carboxymethyl-N-hydroxyethyl imidazolinium betaine.

Examples of the nonionic surfactant include polyoxyethylene alkyl ethers such as polyoxyethylene cetyl ether and polyoxyethylene lauryl ether, polyoxyethylene polyoxypropylene lauryl ether, polyoxyethylene sorbitan oleate, and polyoxyethylene sorbate. Ethylene hydrogenated castor oil, glycerin fatty acid ester, sorbitan acid ester, sucrose fatty acid ester, N-alkyldimethylamine oxide, alkyl polyglucoside, acrylic acid / alkyl methacrylate copolymer, polyether-modified silicone, amino-modified silicone, etc. You can do it.

Particularly, in the present invention, it is preferable to use a cationic surfactant among the above-mentioned surfactants, and in particular, alkyltrimethylammonium chloride,
It is preferable to use a cationic surfactant such as dialkyldimethylammonium chloride or benzalkonium chloride, or acyl N-methyltaurine ammonium, polyether-modified silicone, polyoxyethylene cetyl ether, or sodium lauroylmethyltaurine. Stearyl trimethyl chloride Ammonium, polyether-modified silicone, sodium lauroylmethyltaurine, and polyoxyethylene cetyl ether are more preferably used.

In the present invention, only one of the above-mentioned surfactants may be used, or two or more surfactants may be used in combination. The amount of the surfactant is not particularly limited, but is preferably 0.05 to 10.0% by weight, more preferably 0.1 to 7.0% by weight in the cosmetic. The reason is that if the amount is less than 0.05% by weight, the surfactant effect is not exhibited. Even if the amount exceeds 10.0% by weight, no more effect can be expected, and a sticky feeling or the like is not obtained. This is because in any case, it is not preferable because the texture is deteriorated.

The third essential component in the present invention is water. The water to be compounded is generally purified water, and the compounding amount may be an appropriate amount according to the compounding amount of each cosmetic raw material, but is preferably 5.0 to 90.0% by weight in the cosmetic. And more preferably 40.0 to 90.0% by weight. The reason is that the effect as a solvent cannot be expected if the content is less than 5.0% by weight, and if the content exceeds 90.0% by weight, the amount of the essential component is relatively reduced. This is also undesirable.

The fourth essential component in the present invention is a propellant. The propellant that can be used in the present invention is not particularly limited as long as it is blended with the cosmetic raw material.
Specific examples include liquefied petroleum gas composed of low-boiling hydrocarbons having 4 or less carbon atoms such as propane and butane, isobutane, and dimethyl ether. In the present invention, only one of the above propellants may be used, or two or more of them may be used in combination. The amount of the propellant is not particularly limited, but may be 1.0 to 3 in the cosmetic.
0.0% by weight, more preferably 3.0 to 20.0% by weight
It is good to The reason for this is that if the compounding amount is less than 1.0% by weight, it is not possible to discharge all of the cosmetic stock solution filled in the container, and even if the compounding amount exceeds 20.0% by weight, This is because not only is the effect not expected, but also the stability of the foam is impaired, so that it is not preferable in any case.

Further, the foamed cosmetic according to the present invention may optionally contain a water-soluble polymer compound for the purpose of adjusting the viscosity of the cosmetic stock solution. The water-soluble polymer compound to be compounded is not particularly limited as long as it is compounded in a cosmetic raw material, and examples thereof include a natural polymer compound, a semi-synthetic polymer compound, and a synthetic polymer compound. Specifically, examples of the natural polymer compound include gum arabic, tragacanth, guar gum, locust bean gum, karaya gum, irismos, quince seed, gelatin, shellac, rosin, casein and the like. Examples of the semi-synthetic polymer compound include sodium carboxymethylcellulose, hydroxyethylcellulose, methylcellulose, ethylcellulose, sodium alginate, ester gum, nitrocellulose, hydroxypropylcellulose, and crystalline cellulose. Examples of the synthetic polymer compound include polyvinyl alcohol, polyvinyl pyrrolidone, sodium polyacrylate, carboxyvinyl polymer, polyvinyl methyl ether, polyamide resin, silicone and the like.

In the present invention, only one of the above-mentioned water-soluble polymer compounds may be used, or a mixture of two or more thereof may be used. When the water-soluble polymer compound is compounded, the amount thereof is not particularly limited, but is preferably 0.001 to 10.0% by weight, preferably 0.01 to 0.01% by weight in the cosmetic.
It is good to be 7.0% by weight. This is 0.001% by weight
If it is less than 10, no thickening effect can be obtained, and if it exceeds 10.0% by weight, a feeling of stiffness or stickiness is generated, and the texture is deteriorated.

Further, when the foam cosmetic according to the present invention is used as a hair cosmetic, a film-forming substance can be blended if desired. The film-forming substances are water,
After dissolving in alcohols or propellants and applying it to the hair, it is a substance capable of forming a film on the hair as these evaporate. The film-forming substance used in the present invention is not particularly limited as long as it is used as a cosmetic raw material, and examples thereof include polymers and copolymers composed of monomers containing carboxylic acids or derivatives thereof in addition to polyvinylpyrrolidone. can do.

Specific examples of the polymer or copolymer composed of a monomer containing a carboxylic acid or a derivative thereof include vinylpyrrolidone / vinyl acetate copolymer, vinylpyrrolidone / N, N-dimethylaminoethyl methacrylic acid Copolymer diethyl sulfate, N-methacryloylethyl
N, N-dimethylammonium-α-N-methylcarboxybetaine / alkyl methacrylate copolymer, vinyl methyl ether / maleic acid monoester,
Methoxyalkylene maleic anhydride copolymer, amphoteric acrylate copolymer, amphoteric methacrylate copolymer, vinyl acetate / butyl maleate / isobornyl acrylate copolymer, isobutylene / sodium maleate copolymer, vinyl methyl Ether / maleic acid crosslinked polymer, vinyl acetate / crotonic acid copolymer, acrylic resin alkanolamine, sodium polyacrylate, acrylic acid / alkyl acrylate copolymer, octylacrylamide / acrylic acid ester copolymer, dimethylsiloxane Acrylic acid-based copolymer, carboxyvinyl polymer and the like can be exemplified, and a polymer or copolymer composed of a monomer containing acrylic acid or methacrylic acid or a derivative thereof is preferable.

In the present invention, only one of the above-mentioned film-forming substances may be used, or two or more of them may be used in combination. Further, among the above-mentioned film-forming substances, vinylpyrrolidone / N, N-dimethylaminoethylmethacrylic acid copolymer, acrylic resin alkanolamine, polyvinylpyrrolidone, vinylmethylether /
Maleic acid monoester and N-methacryloyloxyethyl N, N-dimethylammonium-α-N-methylcarboxybetaine / alkyl methacrylate copolymer are most preferably used.

As commercially available vinylpyrrolidone / N, N-dimethylaminoethyl methacrylic acid copolymer, GAFQUAT-755N (manufactured by ISP), HC Polymer 1
N (manufactured by Osaka Organic Chemicals Co., Ltd.) and acrylic resin alkanolamines include trade name Plus Size L-6330 (manufactured by Yoyo Kagaku Co., Ltd.), trade name Aniset A-40M (manufactured by Osaka Organic Chemicals Co., Ltd.), and polyvinylpyrrolidone. As the product name
PVK-90 (manufactured by ISP), LUVISCOL K-90 (manufactured by BASF), etc., as vinyl methyl ether / maleic acid monoester, PVM-BE 50 (manufactured by Tokyo Fine Chemical Company), GAFCAT (Manufactured by ISP) and N-methacryloyloxyethyl N, N-dimethylammonium-
As an α-N-methylcarboxybetaine / alkyl methacrylate copolymer, trade name Yuka Former
R205, Yuka Former R205S, Yuka Former R102, Yuka Former SM, Yuka Former R402, Yuka Former
301, Yuka Former 202, Yuka Former 501, Yuka Former 201, Yuka Former 204, Yuka Former
104, and Yuka Former W (all manufactured by Mitsubishi Chemical Corporation).

When a film-forming substance is compounded, the amount of the film-forming substance is not particularly limited.
0% by weight, preferably 0.01 to 15.0% by weight. If the amount is less than 0.001% by weight, a film cannot be formed on the hair and 20.0% by weight
If the amount exceeds the above range, a feeling of stiffness or stickiness is generated, and the texture is deteriorated.

The hair cosmetic composition according to the present invention may also contain a lower alcohol for the purpose of adjusting the drying speed. The lower alcohol used in the present invention is a monohydric alcohol having 5 or less carbon atoms, and examples thereof include ethanol and isopropanol. When blending a lower alcohol, the blending amount is not particularly limited, but is preferably 0.1 to 40.0% by weight, more preferably 1.0 to 30.0% by weight in the cosmetic. The reason for this is that if the amount is less than 0.1% by weight, the effect of addition cannot be obtained, and even if the amount exceeds 40.0% by weight, no more effect can be expected,
This is because in any case, alcohol odor becomes strong and adversely affects discomfort during use.

The foam cosmetic according to the present invention may contain, in addition to the components described above, a polyhydric alcohol, an ultraviolet absorber, a fragrance, a preservative, a chelating agent, as long as the stability is not impaired.
Antibacterial agent, moisturizer, freshener, vitamins, plant extract, p
An H adjuster or the like may be added according to the purpose.

The foam cosmetic according to the present invention can be applied to various dosage forms, and is used as a cosmetic for hair such as hair foam, or for skin such as hair removal foam, body foam shampoo and body foam lotion. It can be used as a cosmetic.

[0028]

Hereinafter, the present invention will be described based on examples.
The present invention is not limited to these examples.
In addition, the compounding amount is weight%. (Preparation of Samples) Samples of Examples 1 to 12 and Comparative Examples 1 to 5 were prepared according to the compositions shown in Tables 1 and 2 below.
That is, a solution in which each component excluding the propellant was substantially uniformly dispersed was filled in an aerosol container. After clinching the container with the aerosol valve, liquefied petroleum gas 1
A specified amount of 0.0% by weight (20 ° C., pressure 0.39 MPa) was charged from the stem, and a button suitable for the stem was attached to obtain a sample sample. The acrylamide / styrene copolymers in Tables 1 and 2 are trade names of Iodosol G
H-52 (manufactured by NSC) was used as the acrylic acid / alkyl acrylate / styrene copolymer, trade name Iodozol GH-41
(Manufactured by NSC), as a styrene / vinylpyrrolidone copolymer, trade name Antara 430 (manufactured by ISP), and as a styrene / isoprene copolymer, trade name Kraton D-116.
(Manufactured by Shell) as acrylic acid / styrene / ammonium methacrylate copolymer, trade name Syntran 5002
(Interpolymer) and an acrylic resin alkanolamine, trade name plus size L-6330 (manufactured by Ryo Kagaku) were used.

(Test Example 1; Evaluation of Set Holding Power) Each of the samples obtained in Examples 1 to 12 and Comparative Examples 1 to 5 was applied at a temperature of 25 ° C. to a hair bundle of 30 cm, 2 g and 0.2 g each. It was applied one by one. This was wrapped around a cylindrical rod having a diameter of 10 mm, dried at 70 ° C. for 2 hours, returned to room temperature, removed, and hung at 35 ° C. and 80% humidity. From the length (Lo) and the length after 30 minutes (Ln), the set holding force was calculated by the following equation. The set holding power of each sample was evaluated according to the following evaluation criteria.
The results are shown in Tables 1 and 2 below. Set holding force (%) = {(30-Ln) / (30-Lo)} x 1
00: 70% or more Δ: 50% or more and less than 70% ×: less than 50%

(Test Example 2; Evaluation of Stickiness) Example 1
Each of the samples obtained in Nos. To 12 and Comparative Examples 1 to 5 was applied to a hair bundle of 10 cm and 1 g in an amount of 0.1 g at 25 ° C. The texture of the hair bundle to which each sample was applied was evaluated by sensory evaluation of five specialized panelists according to the following evaluation criteria. The average of the scores is shown in Tables 1 and 2 below. ：: Light texture △: Natural texture ×: Heavy finish

Test Example 3 Evaluation of Foam Quality Examples 1 to 12
And each of the samples obtained in Comparative Examples 1 to 5 under the condition of 25 ° C.
Discharge into a hemispherical shape with a diameter of about 5 cm, and apply the appearance of the foam of the hair bundle coated with each sample according to the following evaluation criteria.
Evaluation was performed by sensory evaluation of five specialized panelists. The average of the scores is shown in Tables 1 and 2 below. ：: Fine and creamy foam △: Slightly coarse foam ×: Rough foam

[0032]

[Table 1]

[0033]

[Table 2]

From the results shown in Tables 1 and 2, the foam cosmetic according to the present invention forms a very fine and creamy foam when the cosmetic stock solution is discharged, and when applied to the hair, It can be seen that the prepared hairstyle can be maintained for a long time even under high humidity, and it is excellent in usability without stickiness.

The following is an example of the formulation of the foam cosmetic according to the present invention. In addition, the compounding amount is weight%. (Prescription example 1; hair foam)

[Table 3]

(Formulation Example 2; Hair Foam)

[Table 4]

(Formulation Example 3; Hair Removal Foam)

[Table 5]

(Formulation Example 4; Body Foam Shampoo)

[Table 6]

(Formulation Example 5: Body foam lotion)

[Table 7]

[0040]

As described in detail above, the foam cosmetic according to the present invention is composed of a polystyrene or styrene copolymer, a surfactant, water and a propellant. The foam obtained at this time is very fine and creamy, and when used, the foam has good elongation, and a foamy cosmetic excellent in usability can be obtained. In addition, when used as a cosmetic for hair, since the moisture resistance of the hair is not impaired, the foam can maintain the hairstyle for a long time even under high humidity, and is excellent in usability without stickiness. A cosmetic can be obtained.

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor: Tsubasa Hara 5-12, 12-ken, Chuo-ku, Osaka City Mandom Central Research Laboratory Co., Ltd. F-term (reference) 4C083 AB032 AB051 AC012 AC102 AC122 AC182 AC242 AC482 AC542 AC692 AC772 AC812 AD021 AD022 AD072 AD091 AD092 AD131 AD132 AD282 BB01 BB06 CC33 CC38 DD08 EE06 EE07

Claims (6)

[Claims] 1. A foam cosmetic comprising a polystyrene or styrene copolymer, a surfactant, water and a propellant. 2. The styrene copolymer is an acrylamide / styrene copolymer, acrylic acid / alkyl acrylate / styrene copolymer, styrene / vinylpyrrolidone copolymer, styrene / isoprene copolymer, acrylic acid The foam cosmetic according to claim 1, comprising at least one of styrene-ammonium methacrylate copolymer. 3. The foam cosmetic according to claim 1, wherein the surfactant is a cationic surfactant. 4. The foam cosmetic according to claim 1, further comprising a film-forming substance. 5. The film-forming substance is vinylpyrrolidone / N, N-dimethylaminoethyl methacrylic acid copolymer, acrylic resin alkanolamine, polyvinylpyrrolidone, vinyl methyl ether / maleic acid monoester, N-methacryloyloxyethyl N, N-dimethylammonium-α-N-methylcarboxybetaine
The foam cosmetic according to claim 4, comprising one or more of a methacrylic acid alkyl ester copolymer. 6. The foam cosmetic according to claim 1, further comprising a lower alcohol.