JP6698433B2 - Cosmetics - Google Patents

Description

  The present invention relates to cosmetics.

  BACKGROUND ART Conventionally, cosmetics in which a mixture of ethanol and water contains a powder are characterized by a dry feeling due to the powder and a refreshing feeling of use of the mixture which is an aqueous preparation. As the powder, both an organic compound and an inorganic compound are used, and among these, a silicone resin or silica having a smooth feel is often used. So far, as cosmetics using a mixed solvent of ethanol and water, cosmetics in which redispersibility of powder is improved by using a silicone resin powder (see, for example, Patent Documents 1 and 2) and silica are used. Cosmetics that are dispersed to suppress stickiness of the skin (for example, see Patent Document 3), cosmetics that use a silicone composite resin and silica together to suppress squeaky skin and clogging of containers (see, for example, Patent Document 4). ) Etc. have been proposed.

On the other hand, there is a demand for further improvement in the dry feeling and its sustainability. Therefore, it has been attempted to improve the dry feeling and its durability by increasing the blending amount of the silicone resin or silica. However, when the blending amount of the powder is increased, there is a problem that the redispersibility of the powder is deteriorated and a white residue is generated in a portion where the cosmetic is applied or sprayed.
Therefore, there has been a demand for a cosmetic having good redispersibility of powder, excellent whiteness, smoothness, long-lasting smoothness, and no irritation to the skin.

International Publication No. 2014/069639 Pamphlet JP, 2013-112680, A JP, 2012-219028, A JP, 2014-077155, A

  An object of the present invention is to solve the above-mentioned problems in the related art and achieve the following object. That is, the present invention has a good redispersibility of powder, and an object thereof is to provide a cosmetic composition which is free of white residue, has a dry feeling, has a long-lasting feeling of dryness, and is not irritating to the skin. To do.

The means for solving the above problems are as follows. That is,
<1> Polyethylene powder (A), (B) quaternary ammonium salt represented by the following general formula (1),
(However, in the general formula (1), R ¹ represents an alkyl group having 8 to 18 carbon atoms which may have an ether bond, and R ² , R ³ , and R ⁴ are each independently It represents an alkyl group having 1 to 4 carbon atoms, and the alkyl group of R ^{1 to} R ⁴ may be further substituted with a substituent. X ⁻ represents a counter ion.)
Containing (C) ethanol and (D) water,
The content of the component (B) is 0.01% by mass to 1% by mass,
The mass ratio (A/C) of the content (mass %) of the component (A) and the content (mass %) of the component (C) is 0.2 to 0.7. It is cosmetics.
<2> The cosmetic according to <1>, wherein the component (B) is either benzalkonium chloride or benzethonium chloride.
<3> The cosmetic according to any one of <1> to <2>, wherein the component (B) is benzalkonium chloride.
<4> The content of the component (A) is 5% by mass to 12% by mass,
The content of the component (C) is 20% by mass to 30% by mass,
The cosmetic according to any one of <1> to <3>, wherein the content of the component (D) is 60% by mass to 70% by mass.
<5> The cosmetic according to any one of <1> to <4>, wherein the volume average particle diameter of the component (A) is 7 μm to 12 μm.
<6> The cosmetic according to any one of <1> to <5>, which is filled in a non-aerosol type container.

  ADVANTAGE OF THE INVENTION According to this invention, the said various problems in the past can be solved, the said objective can be achieved, the redispersibility of a powder is favorable, there is no white residue, a dry feeling, the persistence of a dry feeling, and skin. It is possible to provide a cosmetic composition which is excellent in irritation to the skin.

(Cosmetics)
The cosmetic of the present invention contains (A) polyethylene powder, (B) quaternary ammonium salt, (C) ethanol, and (D) water, and further contains other components as necessary. contains.

<(A) Polyethylene powder>
The polyethylene powder as the component (A) is contained in order to improve the dry feel.

  Examples of the shape of the polyethylene powder include a spherical shape, a rod shape, a plate shape, and an amorphous shape. Among these, the spherical shape is preferable from the viewpoint of excellent smoothness and durability. Examples of the spherical shape include a true sphere and an oval cross section.

The volume average particle diameter of the polyethylene powder is appropriately selected depending on the intended purpose without any limitation, but it is preferably 7 μm to 12 μm. When the volume average particle size is less than 7 μm or more than 12 μm, the durability of the dryness may be insufficient.
The volume average particle diameter can be measured by a laser diffraction/scattering particle size distribution measuring device (for example, LS 13430, manufactured by Beckman Coulter, Inc.).

  The polyethylene powder may be appropriately synthesized or may be a commercially available product. Examples of the commercially available product include Flow beads HE-3040 (volume average particle diameter: 11 μm, manufactured by Sumitomo Seika Chemicals Ltd.), Flow beads CL-2080 (volume average particle diameter: 11 μm, manufactured by Sumitomo Seika Chemicals Ltd.), Flow beads CL-3080 (volume average particle diameter: 13 μm, manufactured by Sumitomo Seika Chemicals Co., Ltd.) and the like can be mentioned.

  The content of the polyethylene powder is 4% by mass to 15% by mass with respect to the total amount of the cosmetic, from the viewpoints of redispersibility of the powder, dry feeling, persistence of dry feeling, and absence of white residue. It is preferably 5% by mass to 12% by mass. When the content is less than 4% by mass, the dry feeling and the sustainability of the dry feeling may be insufficient, and when the content exceeds 15% by mass, the redispersibility of the powder and the absence of white residue. May be insufficient.

<(B) Quaternary ammonium salt>
The quaternary ammonium salt of the component (B) is a quaternary ammonium salt represented by the following general formula (1), and is contained in order to improve the dry feeling.
(However, in the general formula (1), R ¹ represents an alkyl group having 8 to 18 carbon atoms which may have an ether bond, and R ² , R ³ , and R ⁴ are each independently It represents an alkyl group having 1 to 4 carbon atoms, and the alkyl group of R ^{1 to} R ⁴ may be further substituted with a substituent. X ⁻ represents a counter ion.)

R ¹ in the general formula (1) represents an alkyl group having 8 to 18 carbon atoms which may have an ether bond, may be linear or branched, and is further substituted with a substituent. It may have been done. Examples of the substituent include an aryl group such as a phenyl group and an alkyl group such as an isopropyl group. Examples of R ¹ include a nonyl group, a lauryl group, a myristyl group, a stearyl group, a group represented by the following chemical formula (1), and the like. Among these, the stearyl group and the group represented by the chemical formula (1) are preferable. In the chemical formula (1), “*” represents a bond.

Wherein in the general formula ^{(1) R 2, R 3} , and R ⁴ each independently represent an alkyl group having 1 to 4 carbon atoms, wherein the alkyl group may be linear even if the branch Well, it may be further substituted with a substituent. Examples of the substituent include an aryl group such as a phenyl group and an alkyl group such as an isopropyl group. Examples of R ² , R ³ , and R ⁴ include a methyl group, an ethyl group, a propyl group, a butyl group, and a group represented by the following chemical formula (2). Among these, a methyl group and a group represented by the chemical formula (2) are preferable. In the chemical formula (2), “*” represents a bond.

  Examples of the counter ion in the general formula (1) include a halide ion and a hydroxide ion. Among these, chloride ion and bromide ion are preferable, and chloride ion is more preferable.

  Examples of the quaternary ammonium salt represented by the general formula (1) include stearyltrimethylammonium chloride, benzethonium chloride, and benzalkonium chloride. These may be used alone or in combination of two or more. Among these, benzalkonium chloride is preferable from the viewpoints of redispersibility of powder, smoothness, and sustainability of smoothness.

  The content of the quaternary ammonium salt represented by the general formula (1) is 0 based on the total amount of the cosmetics from the viewpoints of redispersibility of powder, smooth feeling, and sustainability of smooth feeling. It is 0.01% by mass to 1% by mass, preferably 0.05% by mass to 0.5% by mass. If the content is less than 0.01% by mass or more than 1% by mass, the redispersibility of the powder, the dry feel, and the sustainability of the dry feel may be insufficient.

<(C) Ethanol>
The component (C), ethanol, is contained in order to improve redispersibility. Examples of the ethanol include anhydrous ethanol, 95% by volume ethanol (standard value: 95% by volume to 95.5% by volume), and the like.

  The content of ethanol is preferably 15% by mass to 65% by mass in terms of absolute ethanol, based on the total amount of the cosmetic, from the viewpoint of redispersibility of powder and non-irritation to the skin, 20 Mass% to 30 mass% is more preferable. If the content is less than 15% by mass, the redispersibility of the powder may be insufficient, and if it exceeds 65% by mass, the redispersibility of the powder and the irritation to the skin may be impaired. It may be insufficient.

<Mass ratio (A/C)>
As the mass ratio (A/C) of the content (mass %) of the polyethylene powder of the component (A) and the content (mass %) of the ethanol of the component (C), redispersibility of the powder, Further, from the viewpoint of the sustainability of the dry feeling, it is 0.2 to 0.7, and 0.3 to 0.4 is preferable. If the mass ratio is less than 0.2, the redispersibility of the powder and the sustainability of the dry feel may be insufficient, and if it exceeds 0.7, the redispersibility of the powder is insufficient. May be.

<(D) water>
Water as the component (D) is contained in order to improve the non-irritating effect on the skin. Examples of the water include pure water such as ion-exchanged water, ultrafiltered water, reverse osmosis water, and distilled water, or ultrapure water.
As content of the said water, 25 mass%-80 mass% are preferable with respect to the said cosmetics whole quantity, and 60 mass%-70 mass% are more preferable. If the content is less than 25% by mass, the redispersibility of the powder and the irritation to the skin may be insufficient, and if it exceeds 80% by mass, the redispersibility of the powder may be insufficient. It may be insufficient.

<Other ingredients>
The cosmetic may contain other components as long as the effects of the present invention are not impaired. The other components are not particularly limited and may be appropriately selected depending on the purpose of the dosage form, for example, a cooling agent such as l-menthol, l-menthyl glyceryl ether, 1-menthyl lactate; anionic. Polymers other than component (A) such as polymers, cationic polymers, amphoteric polymers and nonionic polymers; polyhydric alcohols; silicone oils such as cyclic silicones, polyether modified silicones, dimethylpolysiloxanes, amino modified silicones; anions. Surfactants such as nonionic surfactants, nonionic surfactants and amphoteric surfactants; anti-inflammatory agents such as hydroxypropyl β-cyclodextrin and dipotassium glycyrrhizinate; triclosan, isopropylmethylphenol, trichlorocarbanilide, chlorhexidine hydrochloride, Examples include bactericides such as piroctone olamine; plant extracts such as Clara extract; amino acids such as L-arginine. These may be used alone or in combination of two or more.

  The content of the other components is not particularly limited as long as the effect of the present invention is not impaired, and can be appropriately selected according to the purpose.

<Manufacturing method>
The method for producing the cosmetic is not particularly limited and may be appropriately selected depending on the intended purpose. For example, the component (C), the component (A), the component (B), and if necessary, Depending on the method, the above-mentioned other components may be added and uniformly dissolved, and then the component (D) may be added and mixed to produce the mixture.

<Container>
The container for storing the cosmetic material is not particularly limited and may be appropriately selected depending on the intended purpose, but is preferably a non-aerosol type container.

<Use>
Since the cosmetic is a mixture of polyethylene powder and ethanol in a specific ratio, the redispersibility of the powder is high even when used in a dispenser or a trigger container as a non-aerosol spray container that is shaken and sprayed during use. It is good, and it is excellent in that there is no white residue, dryness, persistence of dryness, and no irritation to the skin. Since it has such characteristics, it can be suitably used for a deodorant spray, a water mist, an antiperspirant deodorant mist, and the like.

  Examples of the present invention will be described below, but the present invention is not limited to these examples. The contents in the table are all pure equivalent values.

(Examples 1 to 19 and Comparative Examples 1 to 10)
Cosmetics having the compositions and contents shown in Tables 1 to 5 below were prepared by the following method. (C) Component absolute ethanol, (A) component polyethylene powder, (B) component quaternary ammonium salt, and common component zinc paraphenolsulfonate, isopropylmethylphenol, clara extract, fragrance, and l -Menthol was added and dissolved uniformly, and then purified water of the component (D) was added and mixed to prepare.

  Next, for the cosmetics of Examples 1 to 19 and Comparative Examples 1 to 10, "redispersibility of powder", "no white residue", "dry feeling", and "persistent feeling" were evaluated by the following evaluation methods. "Sex" and "no irritation to the skin" were evaluated. The results are shown in Tables 1 to 5 below.

<Redispersibility of powder>
120 mL of each cosmetic is placed in a trigger type spray container (trigger: Z-305, Mitani Valve Co., Ltd., polyethylene terephthalate bottle: F-1223, Yoshino Kogyo Co., Ltd.), and the powder completely precipitates at room temperature. After standing still, lay the container sideways and repeat shaking under the condition of reciprocating once per second with a shaking width of 15 cm. It was measured. The complete dispersion of the powder was visually judged by three expert panelists. Three tests were carried out for each cosmetic, the average value of the number of times of dispersion was calculated, and the "redispersibility of powder" was evaluated according to the following evaluation criteria.
[Evaluation criteria]
⊚: Average number of dispersion times is less than 10 ○: Average value of dispersion numbers is 10 or more and less than 25 times Δ: Average value of dispersion numbers is 25 or more and less than 50 times ×: Average value of dispersion numbers is 50 or more

<No white residue>
120 mL of each cosmetic was filled in a trigger type spray container (trigger: Z-305, manufactured by Mitani Valve Co., Ltd., polyethylene terephthalate bottle: F-1223, manufactured by Yoshino Industry Co., Ltd.). Using this, 20 men and women specialized panelists applied 3 pushes (about 0.9 g) to the chest, axilla and arm. After 10 minutes from application, it was visually observed whether or not there was white residue on the sprayed part of the cosmetic, and the number of people who answered that there was no white residue was evaluated as "no white residue" according to the following evaluation criteria.
[Evaluation criteria]
◎: 16 to 20 people who answered "no white residue" ○: 11 to 15 people who answered "no white residue" △: "No white residue" 6 people or more and 10 people or less ×: 5 people or less who answered “no white residue”

<Smoothness>
120 mL of each cosmetic was filled in a trigger type spray container (trigger: Z-305, manufactured by Mitani Valve Co., Ltd., polyethylene terephthalate bottle: F-1223, manufactured by Yoshino Industry Co., Ltd.). Using this, 20 men and women specialized panelists applied it by spraying 3 pushes (about 0.9 g) on the neck, chest and arm of one half of the body. After 5 minutes from application, whether or not there is a dry feeling was evaluated based on the following evaluation criteria in comparison with the non-application area. Next, the average score of 20 professional panelists was obtained, and the "dry feeling" was evaluated according to the following criteria.
[Evaluation criteria]
2 points: There is a considerably dry feeling in the coated area compared to the uncoated area 1 point: There is a slight dry feeling in the coated area compared to the uncoated area 0 point: The dry feeling is equivalent in the coated area compared to the uncoated area Or feel lower [criteria]
◎: Average score of 20 professional panelists is 1.5 points or more ○: Average score of 20 professional panelists is 1.0 point or more and less than 1.5 points △: Average score of 20 professional panelists is 0. 5 points or more and less than 1.0 points x: The average score of 20 professional panelists is less than 0.5 points

<Persistence of dryness>
120 mL of each cosmetic was filled in a trigger type spray container (trigger: Z-305, manufactured by Mitani Valve Co., Ltd., polyethylene terephthalate bottle: F-1223, manufactured by Yoshino Industry Co., Ltd.). Using this, 20 men and women specialized panelists applied it by spraying 3 pushes (about 0.9 g) on the neck, chest and arm of one body. Twenty professional panelists evaluated the degree of dryness after 8 hours from the application, as compared with the uncoated area, based on the following evaluation criteria. Next, the average score of 20 professional panelists was obtained, and the "persistence of dry feeling" was evaluated according to the following criteria.
[Evaluation criteria]
2 points: There is a considerably dry feeling in the coated area compared to the uncoated area 1 point: There is a slight dry feeling in the coated area compared to the uncoated area 0 point: The dry feeling is equivalent in the coated area compared to the uncoated area Or feel lower [criteria]
◎: The average score of 20 professional panelists is 1.5 or more. ○: The average score of 20 professional panelists is 1.0 or more and less than 1.5. △: The average score of 20 professional panelists is 0. 5 points or more and less than 1.0 points x: The average score of 20 professional panelists is less than 0.5 points

<No irritation to the skin>
Each cosmetic is filled in a trigger type spray container (trigger: Z-305, Mitani Valve Co., Ltd., polyethylene terephthalate bottle: F-1223, Yoshino Kogyo Co., Ltd.), and one half body of a specialist panelist of 20 men and women. It was applied by spraying 3 pushes (about 0.9 g) on the nape of the neck, the chest, and the arm. After 1 minute from the application, the number of people who responded that there was no irritation to the skin as compared with the non-application area was evaluated as "no irritation to the skin" according to the following evaluation criteria.
[Criteria]
◎: 16 people or more and 20 people or less who answered “no skin irritation” ○: 11 or more and 15 people or less who answered “no skin irritation” Δ: “No skin irritation” 6 people or more and 10 people or less who answered "no irritation": 5 people or less who answered "no irritation to the skin"

The “redispersibility of powder”, “no white residue”, “dry feeling”, and “persistence of dry feeling” of Comparative Example 1 could not be measured because the powder was not contained.

The specific contents of each component used in Examples 1 to 19 and Comparative Examples 1 to 10 are as shown in Table 6 below.
The volume average particle diameter of the polyethylene powder 1 as the component (A) is 11 μm, and the volume average particle diameter of the polyethylene powder 2 is 13 μm.

  The cosmetic of the present invention, as a non-aerosol spray container that is shaken and sprayed at the time of use, has good redispersibility of powder even when used in a dispenser or a trigger container, and has no white residue, smooth feel, and smooth feel. It has excellent durability and no irritation to the skin, and thus can be suitably used for deodorant spray, water mist, antiperspirant deodorant mist and the like.

Claims (4)

(A) polyethylene powder,
(B) a quaternary ammonium salt represented by the following general formula (1),
(However, in the general formula (1), R ¹ represents an alkyl group having 8 to 18 carbon atoms which may have an ether bond, and R ² , R ³ , and R ⁴ are each independently It represents an alkyl group having 1 to 4 carbon atoms, and the alkyl group of R ^{1 to} R ⁴ may be further substituted with a substituent. X ⁻ represents a counter ion.)
(C) ethanol,
(D) contains water,
The content of the component (B) is 0.01% by mass to 1% by mass,
Wherein the amount of the component (A) (wt%), Ri mass ratio (A / C) is 0.2 to 0.7 der between the content of the component (C) (mass%),
Cosmetic wherein Rukoto used to fill in the non-aerosol spray container.   The cosmetic according to claim 1, wherein the component (B) is benzalkonium chloride. The content of the component (A) is 5% by mass to 12% by mass,
The content of the component (C) is 20% by mass to 30% by mass,
The cosmetic according to claim 1, wherein the content of the component (D) is 60% by mass to 70% by mass.   The cosmetic according to any one of claims 1 to 3, wherein the volume average particle diameter of the component (A) is 7 µm to 12 µm.