WO2017212973A1

WO2017212973A1 - Antiperspirant or deodorant cosmetic

Info

Publication number: WO2017212973A1
Application number: PCT/JP2017/019954
Authority: WO
Inventors: 大村　孝之
Original assignee: 株式会社資生堂
Priority date: 2016-06-10
Filing date: 2017-05-29
Publication date: 2017-12-14
Also published as: SG11201809819QA; KR20190016951A; JP2017218440A; CN109310617A; CN109310617B; JP6692703B2; TW201801711A

Abstract

[Problem] To provide an antiperspirant or deodorant cosmetic comprising an oil-in-alcohol/water type emulsion composition, said antiperspirant or deodorant cosmetic having a high emulsion stability, offering no stickiness upon application and giving a pleasant refreshing feeling and dry touch. [Solution] An antiperspirant or deodorant cosmetic comprising an oil-in-alcohol/water type emulsion composition, said oil-in-alcohol/water type emulsion composition containing: (a) 1 mass% or less of an oily component containing a highly polymerized silicone; (b) an emulsifier comprising one or more kinds of polyether-denatured silicones; (c) 50 mass% or more of a lower alcohol; and (d) water.

Description

Antiperspirant or deodorant cosmetic

The present invention relates to a powder-free antiperspirant or deodorant cosmetic that does not need to be shaken before use. More specifically, it comprises an alcohol / oil-in-water emulsion composition obtained by emulsifying oil containing a highly polymerized silicone with a specific polyether-modified silicone, and exhibits good antiperspirant and deodorant effects even if it does not contain a powder component. Regarding fees.

Antiperspirant deodorant agents are used as cosmetics to reduce the stickiness of the skin caused by sweat and the discomfort caused by the stickiness. This antiperspirant cosmetic is formulated with an antiperspirant component and is expected to suppress sweating and astringent. It also provides a refreshing and refreshing feeling when applied to the skin. A smooth feeling is strongly demanded from users.

As a conventional antiperspirant cosmetic, there are many products on the market in which powder components are blended for the purpose of suppressing stickiness and obtaining a smooth feeling. However, since the antiperspirant containing powder has the powder precipitated in the container when left standing, it is necessary to sufficiently redisperse the powder by shaking during use. When this redispersion is insufficient, not only a good feeling of use due to the powder component is not obtained, but also clogging occurs in a mist type or spray type antiperspirant sprayed in a mist form. there were. In addition, there is a concern that the skin after application becomes white due to the powder component.

Patent Document 1 discloses an antiperspirant composition comprising an antiperspirant component (powder component), at least one of a crosslinked methylpolysiloxane and a crosslinked methylphenylpolysiloxane compound, a crosslinked polyether-modified silicone, and a lower alcohol. It is said that by improving the dispersibility of the powder, crystallization of the powder component is prevented and the feeling after use (appearance) after drying is improved. However, since it still contains a powder component, it is necessary to re-disperse the powder by shaking before use, and although the appearance is improved, the skin after application tends to whiten.

Therefore, there is a strong demand for powder-free antiperspirant or deodorant cosmetics that do not have stickiness during application and can provide a sufficient refreshing and smooth feeling.

On the other hand, in the field of hair cosmetics, an oil-in-oil type emulsion composition in which an oil containing a hair treatment component such as a highly polymerized silicone is stably emulsified in alcohol by blending polyether-modified silicone as an emulsifier is known. This alcohol-in-oil emulsion composition has been used in hair treatment agents, hair styling agents, and the like (Patent Document 2). However, there is no known example in which this oil-in-water type emulsion composition is used for antiperspirant or deodorant cosmetics.

JP-A-5-229925 Japanese Patent No. 3417567

An object of the present invention is to obtain a powder-free cosmetic having a refreshing feeling upon use and a smooth feeling after application, which is required for antiperspirant or deodorant cosmetics, even without blending a powder component (antiperspirant). And

As a result of intensive studies to solve the above-described problems, the present inventors have determined that the amount of highly polymerized silicone in the oil-in-alcohol emulsion composition conventionally used for hair treatment agents and hair styling agents is 1 mass. It was found that when it was not more than%, it was possible to give a smooth feeling when applied to the skin without blending the conventional antiperspirant component, and the present invention was completed.

That is, the present invention comprises (a) an oil containing 1% by mass or less of a highly polymerized silicone, (b) an emulsifier comprising a polyether-modified silicone having a specific structure, and (c) 50% by mass or more of a lower alcohol, (D) An antiperspirant or deodorant cosmetic comprising an alcohol / oil-in-water emulsified composition containing water is provided.

In the present invention, since the powder component is not substantially blended, it is not necessary to re-disperse the powder component by shaking before use, and whitening of the skin after application does not occur. Moreover, by setting it as the said structure, there is no stickiness at the time of apply | coating to skin, and a refreshing feeling and a smooth feeling are obtained at the time of application | coating and after drying. In addition, by blending polyether-modified silicone having a specific structure as an emulsifier, oil can be stably emulsified in alcohol, so it is excellent in stability over time, and the blended components are precipitated and the spray container is clogged. I don't have to.

Next, each component which comprises the cosmetics of this invention is explained in full detail.
<(A) Oil containing highly polymerized silicone>
The oil (a) containing highly polymerized silicone used in the present invention (hereinafter sometimes simply referred to as “component (a)”) is in the form of a gum (for example, a viscosity at 30 ° C. of about 1,000,000 mPa · s or more). ) Of one or more selected from high-polymerized silicone and amino-modified or ammonium-modified high-polymerized silicone (sometimes referred to as silicone gum).

Examples of the highly polymerized silicone in the present invention include highly polymerized polysiloxane or highly polymerized dimethiconol represented by the following general formula (I).

In the formula, R ₁ represents a methyl group or a phenyl group (provided that not all of R ₁ are phenyl groups), and R ₂ represents a methyl group or a hydroxyl group. N represents an integer of 3,000 to 20,000.

Examples of the amino-modified or ammonium-modified highly polymerized silicone of the present invention (sometimes simply referred to as amino-modified silicone) include those represented by the following general formula (II).

In the formula, R ¹ represents a methyl group or a part thereof represents a phenyl group, and R ² represents the same as R ³ or represents a methyl group or a hydroxyl group. R ³ represents the formula R ⁴ Z {R ⁴ represents a divalent alkylene group having 3 to 6 carbon atoms, Z represents —NR ⁵ ₂ , —N ⁺ R ⁵ ₃ A ⁻ , —NR ⁵ (CH ₂ ) _a NR ⁵ ₂ , —NR ⁵ (CH ₂ ) _a N ⁺ R ⁵ ₃ A ^— and —NR ⁵ (CH ₂ ) _a N (R ⁵ ) C═O (R ⁶ ) (R ⁵ is hydrogen or 1 to 4 R ⁶ represents an alkyl group having 1 to 4 carbon atoms, A represents Cl, Br or I, and a is an integer of 2 to 6. Represents a monovalent group selected from: }, Wherein m and n are each a positive integer, m + n is an integer of 3,000 to 20,000, and n / m is 1/500 to 1 / 10,000.
Of these, aminopropylmethylsiloxane / dimethylsiloxane copolymer (aminopropyldimethicone) is preferable.

The blending amount of the highly polymerized silicone (silicone gum) in the cosmetic of the present invention needs to be 1.0% by mass or less based on the total amount of the cosmetic. If the blending amount exceeds 1.0% by mass, stickiness occurs during application, and a refreshing feeling after drying cannot be obtained. The lower limit of the amount of the highly polymerized silicone is not particularly limited, but is usually 0.01% by mass or more, preferably 0.05% by mass or more, more preferably 0.1% by mass with respect to the total amount of the cosmetic. That's it. That is, the blending amount of the highly polymerized silicone (silicone gum) is 1.0% by mass or less, preferably 0.01 to 1.0% by mass, more preferably 0.05 to 1% based on the total amount of the cosmetic. 0.0 mass%, most preferably 0.1-1.0 mass%.

As the component (a) of the present invention, a commercially available product containing the above-mentioned highly polymerized silicone and oil can be used.

Examples of commercially available products containing the highly polymerized silicone represented by the above general formula (I) and oil include dimethyl silicone oil blends manufactured by Shin-Etsu Chemical Co., Ltd., such as KF-9008 (20% highly polymerized dimethicone and cyclopentasiloxane). 80% mixture), KF-9011 (mixture of 10% highly polymerized dimethicone and 90% cyclopentasiloxane), KF-9903 (mixture of 15% highly polymerized dimethicone and 85% low viscosity dimethicone), KF-9014 (highly polymerized) 15% dimethicone and 85% cyclopentasiloxane), MK-15H (20% highly polymerized dimethicone and 80% low viscosity dimethicone), X-21-5495 (15% highly polymerized dimethicone and 85% cyclopentasiloxane) Mixture), KF-9028 (highly polymerized dimethicone 20% and cyclopentacillo) 80% Sun), KF-9030 (20% highly polymerized dimethicone and 80% low viscosity dimethicone), high polymerized dimethiconol, for example X-21-5613 (20% highly polymerized dimethiconol and 80% low viscosity dimethicone Mixture), X-21-5666 (mixture of 30% highly polymerized dimethiconol and 70% cyclopentasiloxane), X-21-5847 (highly polymerized dimethiconol), X-21-5849 (highly polymerized dimethiconol), Toray Dow Corning BY11-007 (a mixture of 10% high polymerization dimethicone and 90% dimethicone), BY11-014 (a mixture of 15% high polymerization dimethicone and 85% dimethicone), BY11-026 (high polymerization) A mixture of 30% dimethicone and 70% dimethicone) Can.

Examples of commercially available products containing an amino-modified highly-polymerized silicone represented by the general formula (II) and an oil component include a highly-polymerized amino oil blend (amino gum) manufactured by Shin-Etsu Chemical Co., Ltd., for example, KF-8017 (aminopropyl dimethicone). A mixture of 10% and 90% dimethicone), KF-8018 (a mixture of 10% aminopropyl dimethicone and 90% cyclopentasiloxane), KF-8020 (a mixture of 20% aminopropyl dimethicone and 80% dimethicone) and the like. it can.

The oil other than the highly polymerized silicone in the component (a) of the present invention is selected from oils that can be usually used in skin cosmetics including antiperspirant or deodorant cosmetics in addition to the various oils contained in the above-mentioned commercial products. Examples thereof include hydrocarbon oils such as liquid paraffin and squalane, ester oils, avocado oils, vegetable oils such as palm oil and jojoba oil, and silicone oils.

The blending amount of the component (a) in the cosmetic of the present invention is not particularly limited, but is usually 0.1 to 30% by mass, preferably 0.5 to 25% by mass, more preferably based on the total amount of the cosmetic. 0.5 to 20% by mass. When the blending amount of the component (a) exceeds 30% by mass, the stability of the emulsion may be lowered.

<(B) Polyether-modified silicone>
In the present invention, (b) an emulsifier composed of one or more polyether-modified silicones having a specific structure (hereinafter sometimes simply referred to as “component (b)”) is blended.
The polyether-modified silicone (component (b)) used in the present invention is one or more selected from polyether-modified silicones represented by the following general formula (III).

In the formula, R is a methyl group or a phenyl group. A represents a general formula: —C ₃ H ₆ O (C ₂ H ₄ O) _a (C ₃ H ₆ O) _b —R ′ (wherein R ′ represents a hydrogen atom, an acyl group, and an alkyl having 1 to 4 carbon atoms) A group selected from the group consisting of groups, and a is an integer of 5 to 50, and b is an integer of 5 to 50). Specific examples of the acyl group for R ′ include a formyl group, an acetyl group, a propionyl group, a butyryl group, an acryloyl group, a benzoyl group, a toluoyl group and the like. Specific examples of the alkyl group having 1 to 4 carbon atoms include Examples include methyl group, ethyl group, i-propyl group, n-propyl group, t-butyl group, n-butyl group and the like.

In the polyoxyalkylene group, when a or b is less than 5, the polyether-modified silicone does not show a sufficient surface-active effect, and when a or b exceeds 50, it was obtained. The composition becomes sticky.
The content of the polyoxyalkylene group in the molecule is not particularly limited, but it is desirable that the content of the polyoxyalkylene group exceeds 20% by mass in the total molecular weight. This is because when the content of the polyoxyalkylene group is 20% by mass or less in the total molecular weight, the thickening effect of the polyether-modified silicone is remarkably reduced.
M is an integer of 50 to 1,000, and n is an integer of 1 to 40. This is because when m is less than 50 and n is less than 1, the emulsion stability is poor, and when m is more than 1,000 and n is more than 40, the composition obtained This is because a sticky feeling is generated. Further, m: n is preferably 200: 1 to 5: 1, and particularly preferably 60: 1 to 15: 1.

The molecular weight of the polyether-modified silicone used in the present invention is not particularly limited, and the viscosity is not particularly limited. However, the polyether-modified silicone forms a stable emulsion and has a smooth feeling. It is desirable that the viscosity at 25 ° C. when a 50 mass% solution of siloxane or isoparaffin is in the range of 1,000 to 100,000 mPa · s.

Commercially available products can be used as the polyether-modified silicone used in the present invention. Examples of commercially available products include BY11-030 manufactured by Toray Dow Corning Silicone (including 50% by mass of PEG / PPG-19 / 19 dimethicone and 50% by mass of cyclopentasiloxane. PEG / PPG-19 / 19 dimethicone Is a polyether-modified silicone having a molecular weight of 55000 with m = 400, n = 10, a = 19, b = 19 in the above general formula; HLB (Si) = 7), BY25-337 (50% by mass) PEG / PPG-19 / 19 dimethicone and 50% by weight of light liquid isoparaffin (including hydrogenated polyisobutene)).

The blending amount of the polyether-modified silicone used in the present invention is not particularly limited, but it is preferably 0.1 to 5.0% by mass, preferably 0.3 to 4.0%, based on the total amount of the cosmetic. % By mass, more preferably 0.4 to 3.0% by mass, and most preferably 0.5 to 2.5% by mass. In the composition of the present invention, if the blend amount of the polyether-modified silicone is less than 0.1% by mass, stable emulsification is difficult, and if it exceeds 5.0% by mass, the composition feels sticky. You may come to have.

<(C) Lower alcohol>
The lower alcohol (c) used in the present invention (hereinafter sometimes simply referred to as “component (c)”) generally has 1 to 6 carbon atoms, preferably carbon atoms, which can be used in the fields of medicine, cosmetics and the like. 1 to 4 alcohols are mentioned, and specific examples include methanol, ethanol, propanol, butanol, pentanol, hexanol and the like, and ethanol is particularly preferably used.
It should be noted that i-propanol, n-propanol, t-butanol, s-butanol and the like are too hydrophobic and difficult to emulsify, so it is desirable to use them together with ethanol.
The amount of the lower alcohol (component (c)) used in the present invention is 50% by mass or more, preferably 60% by mass or more based on the total amount of the cosmetic. Moreover, it is preferable that the compounding quantity of a lower alcohol is 3 times or more (mass ratio) with respect to the compounding quantity of the water in a composition. When the amount of the lower alcohol is less than 3 times, it is difficult to obtain a refreshing feeling and a smooth feeling after application.

<(D) Water>
In the present invention, the amount of (d) water (hereinafter sometimes referred to simply as “component (d)”) is preferably 15% by mass or less, more preferably 12% by mass or less, based on the total amount of the cosmetic. is there. If the amount of water exceeds 15% by mass, stickiness occurs during application, and a smooth feeling cannot be obtained.

As described above, the antiperspirant cosmetic composition of the present invention becomes a highly stable alcohol / oil-in-water emulsion composition by incorporating the components (a) to (d), and incorporates the conventional antiperspirant component (powder component). Even if it is not, a refreshing feeling and a smooth feeling at the time of use can be obtained. Although this effect is a surprising effect that cannot be predicted from the prior art, this fact further blends the cosmetic composition of the present invention with an antiperspirant component, antibacterial agent, and deodorant component that have been blended in the conventional antiperspirant cosmetic composition. Does not mean to eliminate. However, the blending amount is limited to a range that does not impair the effects of the present invention.

Antiperspirant ingredients that can be blended include, for example, astringent / antiperspirant such as zinc paraphenolsulfonate (zinc sulfocolate), citric acid, various aluminum compounds; triclosan, benzalkonium chloride, benzethonium chloride, chlorhexidine hydrochloride, glucone Antibacterial agents such as chlorhexidine acid and halocarban; deodorants such as zinc oxide, flavonoids and chlorophyll; cooling sensations such as menthol and menthyl lactate; and various masking agents.

In addition to the above antiperspirant components, the antiperspirant or deodorant cosmetic composition of the present invention includes other components that can be usually blended in cosmetics, such as humectants, preservatives, fragrances, chelating agents, antioxidants, ultraviolet rays. Absorbers, gelling agents, thickeners, and the like can be blended within a range that does not impair the effects of the present invention.

The product form of the antiperspirant or deodorant cosmetic of the present invention is not particularly limited, and can be provided in the form of, for example, an antiperspirant, body lotion, skin lotion, or cosmetic liquid. Since the cosmetic of the present invention does not need to contain a powdery antiperspirant component, it is particularly suitable for being provided in the form of a mist contained in a spray container such as a dispenser or a spray contained together with a propellant. Therefore, the nozzle is not clogged.

Hereinafter, the present invention will be described more specifically with reference to examples, but the present invention is not limited thereto. In addition, unless there is particular notice, a compounding quantity represents the mass% with respect to the whole quantity.

Antiperspirant / deodorant cosmetics according to the present invention were prepared and evaluated for use feeling.
(Examples 1 to 16 and Comparative Examples 1 to 3)
The cosmetics shown in Examples 1 to 16 and Comparative Examples 1 to 3 uniformly dissolve components other than ion-exchanged water and benzalkonium chloride solution among the components shown in Tables 1 to 3 below, and emulsify by stirring treatment. Then, ion-exchanged water and benzalkonium chloride solution were added.

(Comparative Examples 4 to 6)
The cosmetics shown in Comparative Examples 4 to 6 were prepared by mixing an aqueous phase component containing a lower alcohol and a powder component, and then emulsifying the oil phase component in which the surfactant was dissolved by stirring.

The cosmetic samples prepared by the above method were applied to 10 professional panelists, and the following evaluation points and evaluation criteria for the non-stickiness after application, the refreshing feeling during application, the refreshing feeling after application drying, and the smooth feeling Judgment based on.

+3 points: Very good.
+2 points: Good.
+1 point: Somewhat good.
0 points: Normal.
-1 point: Somewhat bad.
-2: Bad.
-3 points: Very bad.

Based on the average score of the evaluation points, the determination was made according to the following evaluation criteria.
A: The average score is +2 or more.
B: The average score is +1 point or more and less than +2 point.
C: The average score is 0 or more and less than +1.
D: The average score is -1 point or more and less than 0 point.
E: The average score is -2 points or more and less than -1 point.
F: The average score is less than -2.

From the results of Tables 1 and 2, the antiperspirant cosmetic composition of the present invention has no stickiness at the time of application without blending the powder component normally blended in the antiperspirant to obtain a refreshing feeling and a smooth feeling. A refreshing feeling and a smooth feeling can be obtained even after drying.

On the other hand, as shown in the results of Table 3, when the highly polymerized silicone is blended in excess of 1% by mass as a silicone gum component (Comparative Example 1 and Comparative Example 2), stickiness occurs during application, and sufficient A refreshing feeling was not obtained. Further, when the blending amount of the lower alcohol was less than 50 mass (Comparative Example 3), stickiness was generated during coating, and a smooth feeling was not obtained.
Further, as shown in Tables 1 and 2, in the present invention, a refreshing feeling and a smooth feeling can be obtained due to the components (a) and (b). In the case where the powder components conventionally blended to obtain a refreshing feeling and a smooth feeling are blended in place of the components (a) and (b) of the present invention (Comparative Examples 4 to 6), even if the ethanol content is 50 Even if the mass% was increased to 80 mass%, a good feeling of use as an antiperspirant could not be obtained. Further, even when an antiperspirant component (chlorohydroxyaluminum) was combined with the powder component (Comparative Example 6), stickiness was produced during application, and a smooth feeling was not obtained.

Subsequently, the emulsion which concerns on this invention was prepared, and temporal stability in the environment from which temperature differs was evaluated.
Specifically, an emulsion having the composition listed in Table 4 below was prepared in the same manner as in the above examples, and each prepared emulsion was allowed to stand at 0 ° C., room temperature, 50 ° C. for 4 weeks, and then Based on these criteria, stability was evaluated by visual observation. The results are shown in Table 4.
<Evaluation criteria>
A: No change.
B: Slight creaming occurred.
C: Remarkable creaming occurred.
D: Separation.

As shown in the results of Table 4, all the emulsions had good emulsion stability.

Claims

(A) an oil containing 1% by mass or less of highly polymerized silicone;
(B) The following general formula (III):

[Wherein A is a general formula: —C 3 H 6 O (C 2 H 4 O) a (C 3 H 6 O) b —R ′ (where R ′ is a hydrogen atom, an acyl group, and a carbon number) A group selected from the group consisting of 1 to 4 alkyl groups, a is an integer of 5 to 50, and b is an integer of 5 to 50), and R is A methyl group or a phenyl group, m is an integer of 50 to 1,000, and n is an integer of 1 to 40]
An emulsifier comprising one or more of the polyether-modified silicones represented by
(C) 50% by weight or more of lower alcohol, and (d) water,
An antiperspirant or deodorant cosmetic comprising an alcohol / oil-in-water emulsion composition containing
2. The antiperspirant or deodorant cosmetic according to claim 1, wherein the amount of the (c) lower alcohol is at least three times the amount of the (d) water.
The antiperspirant or deodorant cosmetic according to claim 1 or 2, further comprising an antiperspirant component.
A spray-type antiperspirant or deodorant cosmetic, comprising a dispenser-type container filled with the cosmetic according to claim 1.