JP2017105733A - Antiperspirant composition - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an antiperspirant composition which makes the skin smooth, provides no tight feeling of the skin, antiperspirant effect and persistence of the antiperspirant effect and has no sticky feeling of the skin and little irritation to the skin.SOLUTION: There is provided an antiperspirant composition which comprises (A) at least one antiperspirant selected from aluminium compound, a zirconium compound and a complex thereof, (B) a vinyl-based anionic polymer, (C) ethanol, (D) a polyethylene glycol having an average molecular weight of 380 to 2150 and (E) a neutralizer, wherein the mass ratio [(A+B)/D] of the sum (A+B) of the content (mass%) of (A) the antiperspirant and the content (mass%) of (B) the vinyl-based anionic polymer to the content (mass%) of (D) the polyethylene glycol is 2 to 128.SELECTED DRAWING: None

Description

  The present invention relates to an antiperspirant composition.

Conventionally, cosmetic compositions containing chlorohydroxyaluminum and a specific anionic polymer, and forming a film on the skin, have excellent antiperspirant effects and durability of antiperspirant effects (for example, patents). Reference 1 and 2).
However, since these proposals form a strong film, there is a problem that the feeling of use becomes worse. In addition, the above proposal has not been sufficiently examined with respect to the lack of skin tension, the non-stickiness of the skin, and the smoothness of the skin.

  Therefore, it is hoped to provide an antiperspirant composition that further enhances the skin and provides a good feeling of tightness of the skin, antiperspirant effect, persistence of the antiperspirant effect, non-stickiness of the skin, and no irritation to the skin. It is rare.

JP 2014-15421 A JP-A-8-40862

  An object of the present invention is to solve the above-described problems and achieve the following objects. That is, the present invention provides an antiperspirant composition that further enhances the skin and has a good feeling of tightness of the skin, antiperspirant effect, persistence of the antiperspirant effect, non-stickiness of the skin, and no irritation to the skin. The purpose is to provide.

  As a result of intensive studies by the inventor in order to solve the above problems, (A) at least one antiperspirant selected from an aluminum compound, a zirconium compound, and a complex thereof; and (B) a vinyl type anionic property. A polymer, (C) ethanol, (D) polyethylene glycol having an average molecular weight of 380 to 2,150, and (E) a neutralizing agent, wherein (A) the content of the antiperspirant (% By mass) and (B) the sum (A + B) of the content (% by mass) of the vinyl type anionic polymer and the mass ratio [(A + B) / D of the content (% by mass) of the (D) polyethylene glycol. ] Is 2 to 128, the antiperspirant composition further enhances the skin by the synergistic effect of each component, the feeling of firmness of the skin, the antiperspirant effect, the persistence of the antiperspirant effect, and the non-stickiness of the skin And no irritation to the skin It was found that is good.

This invention is based on the said knowledge by this inventor, and as a means for solving the said subject, it is as follows.
<1> (A) at least one antiperspirant selected from aluminum compounds, zirconium compounds, and complexes thereof;
(B) a vinyl type anionic polymer;
(C) ethanol,
(D) polyethylene glycol having an average molecular weight of 380 to 2,150;
(E) a neutralizing agent,
The sum (A + B) of the content (mass%) of (A) antiperspirant and the content (mass%) of (B) vinyl type anionic polymer, and the content (mass%) of (D) polyethylene glycol. The mass ratio [(A + B) / D] is 2 to 128, which is an antiperspirant composition.
<2> The antiperspirant composition according to <1>, wherein the (A) antiperspirant is chlorohydroxyaluminum.
<3> The vinyl type anionic polymer (B) is composed of a (vinyl acetate / crotonic acid / vinyl neodecanoate) copolymer, a (vinyl methyl ether / butyl maleate) copolymer, and a (vinyl methyl ether / butyl maleate) copolymer. The antiperspirant composition according to any one of <1> to <2>, which is at least one selected.
<4> The antiperspirant composition according to any one of <1> to <3>, wherein the (D) polyethylene glycol has an average molecular weight of 570 to 1,650.
<5> The antiperspirant composition according to any one of <1> to <4>, wherein the (E) neutralizing agent is 2-amino-2-methyl-1-propanol.
<6> The content of the antiperspirant (A) is 6% by mass to 15% by mass,
Content of the said (B) vinyl type anionic polymer is 1 mass%-2.5 mass%,
Content as said (C) absolute ethanol is 60 mass%-75 mass%,
Content of the said (D) polyethyleneglycol is 0.5 mass%-2 mass%,
The antiperspirant composition according to any one of <1> to <5>, wherein the content of the (E) neutralizing agent is 0.1% by mass to 0.3% by mass.
<7> The antiperspirant composition according to any one of <1> to <6>, wherein (D) the polyethylene glycol has an average molecular weight of 950 to 1,050.
<8> The antiperspirant composition according to any one of <1> to <7>, wherein the composition is any one selected from a roll-on type, a gel type, a lotion type, and a mist type.

  According to the present invention, it is possible to solve the above-described problems and achieve the above-described object, further to the skin, lack of skin tension, antiperspirant effect, persistence of the antiperspirant effect, skin stickiness It is possible to provide an antiperspirant composition that is excellent in lack of skin irritation and skin irritation.

(Antiperspirant composition)
The antiperspirant deodorant composition of the present invention comprises (A) an antiperspirant, (B) a vinyl type anionic polymer, (C) ethanol, (D) polyethylene glycol, and (E) a neutralizer. Further, it contains other components as required.

<(A) Antiperspirant>
The antiperspirant as the component (A) is contained to improve the antiperspirant effect.

  Examples of the antiperspirant of the component (A) include aluminum compounds, zirconium compounds, and complexes thereof. These may be used alone or in combination of two or more.

Examples of the aluminum compound include an aluminum salt.
Examples of the aluminum salt include aluminum chloride, aluminum sulfate, potassium aluminum sulfate, aluminum acetate, chlorohydroxyaluminum, bromohydroxyaluminum, and allantochlorohydroxyaluminum. These may be used alone or in combination of two or more.

Examples of the zirconium compound include zirconium salts.
Examples of the zirconium salt include zirconium chloride, hydroxy zirconium chloride, zirconium hydroxide, ammonium zirconium carbonate, potassium zirconium carbonate, and zirconium sulfate. These may be used alone or in combination of two or more.

  Examples of the complex include a complex of an aluminum compound and glycine, a complex of an aluminum compound and propylene glycol, a complex of a mixture of an aluminum compound and a zirconium compound and glycine, and the like. These may be used alone or in combination of two or more.

  Examples of the complex of the aluminum compound and glycine include aluminum chloride / glycine complex, aluminum sulfate / glycine complex, aluminum sulfate / glycine complex, aluminum acetate / glycine complex, chlorohydroxyaluminum / glycine complex, bromohydroxyaluminum / glycine. And a complex, an allantochlorohydroxyaluminum / glycine complex, and the like. These may be used alone or in combination of two or more.

  Examples of the complex of the aluminum compound and propylene glycol include an aluminum chloride / propylene glycol complex, an aluminum sulfate / propylene glycol complex, an aluminum sulfate / propylene glycol complex, an aluminum acetate / propylene glycol complex, and a chlorohydroxyaluminum / propylene glycol complex. Bromohydroxyaluminum / propylene glycol complex, allantoinchlorohydroxyaluminum / propylene glycol complex, and the like. These may be used alone or in combination of two or more.

Examples of the complex of a mixture of the aluminum compound and the zirconium compound with glycine include, for example, an aluminum chloride / zirconium compound / glycine complex, an aluminum sulfate / zirconium compound / glycine complex, an aluminum sulfate potassium / zirconium compound / glycine complex, and an aluminum acetate / zirconium complex. Examples thereof include a compound / glycine complex, a chlorohydroxyaluminum / zirconium compound / glycine complex, a bromohydroxyaluminum / zirconium compound / glycine complex, and an allantochlorohydroxyaluminum / zirconium compound / glycine complex. These may be used alone or in combination of two or more.
Among these, aluminum chloride, aluminum sulfate, potassium aluminum sulfate, aluminum acetate, chlorohydroxyaluminum, allantochlorohydroxyaluminum, chlorohydroxyaluminum / propylene glycol complex, chlor from the viewpoint of antiperspirant effect and antiperspirant effect. Hydroxyaluminum / zirconium-glycine complex is preferable, chlorohydroxyaluminum, chlorohydroxyaluminum-propylene glycol complex, potassium aluminum sulfate, and aluminum / zirconium-glycine complex are more preferable, and chlorohydroxyaluminum is particularly preferable.

  The content of the antiperspirant of the component (A) is the total amount of the antiperspirant composition in terms of antiperspirant effect, durability of the antiperspirant effect, lack of skin tension, and non-stickiness of the skin. On the other hand, 4 mass%-20 mass% are preferable, and 6 mass%-15 mass% are more preferable. When the content is less than 4% by mass, the antiperspirant effect and the persistence of the antiperspirant effect may be insufficient. When the content exceeds 20% by mass, the skin does not feel tight, The non-stickiness may be insufficient.

<(B) Vinyl type anionic polymer>
The vinyl type anionic polymer of the component (B) is contained in order to improve the sustainability of the antiperspirant effect by a film formed on the skin.

  Examples of the vinyl type anionic polymer of the component (B) include a copolymer obtained by copolymerizing an anionic monomer, a vinyl ether compound, and a vinyl ester compound; vinyl ester in the copolymer Examples include a copolymer in which vinyl alcohol units are formed in the copolymer by further hydrolyzing the units. These may be used alone or in combination of two or more.

  Examples of the anionic monomer include crotonic acid, maleic acid, maleic acid monoester, and itaconic acid. These may be used alone or in combination of two or more.

  Examples of the vinyl ether compound include vinyl methyl ether, vinyl ethyl ether, vinyl hexyl ether, vinyl octyl ether, vinyl decyl ether, vinyl ethyl hexyl ether, vinyl methoxy ethyl ether, vinyl ethoxy ethyl ether, vinyl chloro ethyl ether, 1-methyl. -2,2-dimethylpropyl vinyl ether, 2-ethylbutyl vinyl ether, hydroxyethyl vinyl ether, diethylene glycol vinyl ether, dimethylaminoethyl vinyl ether, diethylaminoethyl vinyl ether, butylaminoethyl vinyl ether, benzyl vinyl ether, tetrahydrofurfuryl vinyl ether, vinyl phenyl ether, vinyl tolyl Ether, vinyl chlorophenyl ether , Vinyl 2,4-dichlorophenyl ether, vinyl naphthyl ether, and vinyl anthranyl ether. These may be used alone or in combination of two or more.

  Examples of the vinyl ester compound include vinyl butyrate, vinyl isobutyrate, vinyl trimethyl acetate, vinyl diethyl acetate, vinyl valate, vinyl caproate, vinyl chloroacetate, vinyl dichloroacetate, vinyl methoxyacetate, vinyl butoxyacetate. Vinyl phenyl acetate, vinyl acetoacetate, vinyl lactate, vinyl-β-phenyl butyrate, vinyl cyclohexyl carboxylate, and the like. These may be used alone or in combination of two or more.

  Examples of the vinyl type anionic polymer of the component (B) include (vinyl acetate / crotonic acid / vinyl neodecanoate) copolymer (trade name: RESYN 28-2930, manufactured by Akzo Nobel Co., Ltd.), (vinyl methyl ether / maleic acid). Alkyl) copolymer (trade name: GANTREZ ES-225, trade name: ES-425, trade name: SP-215, and above, manufactured by IPS Japan Ltd.), vinyl acetate / crotonic acid copolymer (trade name: Resin 28- 1310, manufactured by National Starch Co., Ltd.), vinyl acetate / crotonic acid / vinyl propionate copolymer (trade name: Ruby Set CAP, manufactured by BASF), vinyl alcohol / itaconic acid copolymer (trade name: KM-118, manufactured by Kuraray Co., Ltd.) Etc. These may be used alone or in combination of two or more. Among these, (vinyl acetate / crotonic acid / vinyl neodecanoate) copolymers and (vinyl methyl ether / alkyl maleate) copolymers are preferable from the viewpoint of the persistence of the antiperspirant effect, and (vinyl acetate / crotonic acid / vinyl neodecanoate) are preferable. ) Copolymers are more preferred. The (vinyl acetate / crotonic acid / vinyl neodecanoate) copolymer means a copolymer obtained by copolymerizing vinyl acetate, crotonic acid, and vinyl neodecanoate.

  Examples of the (vinyl methyl ether / alkyl maleate) copolymer include, for example, a (vinyl methyl ether / maleic acid) copolymer (trade name: GANTREZ AN, manufactured by IPS Japan Ltd.), (vinyl methyl ether / ethyl maleate). Copolymers (trade name: GANTREZ ES-225, manufactured by ISP Japan), (vinyl methyl ether / butyl maleate) copolymer (trade name: GANTREZ ES-425, manufactured by ISP Japan), and the like. . These may be used alone or in combination of two or more. Among these, (vinyl methyl ether / ethyl maleate) copolymer and (vinyl methyl ether / butyl maleate) copolymer are preferable from the viewpoint of the persistence of the antiperspirant effect. The (vinyl methyl ether / ethyl maleate) copolymer means a copolymer obtained by copolymerizing vinyl methyl ether and ethyl maleate, and the (vinyl methyl ether / butyl maleate) copolymer means vinyl methyl. It means a copolymer obtained by copolymerizing ether and butyl maleate.

  The content of the vinyl type anionic polymer of the component (B) is based on the total amount of the antiperspirant composition from the viewpoint of the persistence of the antiperspirant effect, the lack of skin firmness, and the non-stickiness of the skin. 0.5 mass% to 3 mass% is preferable, and 1 mass% to 2.5 mass% is more preferable. When the content is less than 0.5% by mass, the sustainability of the antiperspirant effect may be insufficient. When the content exceeds 3% by mass, the skin does not feel tight and the skin is not sticky. May be insufficient.

<(C) Ethanol>
The ethanol component (C) is contained to improve the non-stickiness of the skin.

  Examples of the component (C) ethanol include absolute ethanol, 95% by volume ethanol (standard value 95% by volume to 95.5% by volume), and the like. These may be used individually by 1 type and may use 2 or more types together.

  The content of the component (C) as absolute ethanol is the total amount of the antiperspirant composition in terms of antiperspirant effect, durability of the antiperspirant effect, non-stickiness of the skin, and no irritation to the skin. On the other hand, 50 mass%-85 mass% are preferable in conversion of absolute ethanol, and 60 mass%-75 mass% are more preferable. When the ethanol content is less than 50% by mass, the non-stickiness of the skin becomes insufficient, and when it exceeds 85% by mass, the antiperspirant effect and the sustainability of the antiperspirant effect become insufficient, and sensitive skin. Causes skin irritation.

The ethanol content of the component (C) is the total content of absolute ethanol including ethanol brought in from these components when a plant extract or the like is contained as another component.
The content (mass%) in terms of absolute ethanol when 95% by volume ethanol is used should be obtained from the following formula 1 (Independent Administrative Institution Pharmaceuticals and Medical Devices Agency Document 038-1309.pdf) and formula 2. Can do.
Ethanol mass% = volume% × 0.79422 (specific gravity of 100% by volume at 15 ° C.) / D (specific gravity at 15 ° C.) Formula 1
= (95 x 0.79422) /0.81639
= 92.42
-Absolute ethanol content (mass%) = 95 vol% ethanol content (mass%) x 92.42 / 100 Formula 2

<(D) Polyethylene glycol>
The polyethylene glycol as the component (D) is contained in order to improve the smooth feeling of the skin.

  The average molecular weight of polyethylene glycol as the component (D) is 380 to 2,150, preferably 570 to 1,650, more preferably 950 to 1,050, from the viewpoint of the smooth feeling of the skin. When the average molecular weight is less than 380, the dry feeling of the skin and the durability of the antiperspirant effect are insufficient, and when it exceeds 2,150, the dry feeling of the skin and the non-stickiness of the skin are insufficient. Become. The average molecular weight can be measured, for example, by an average molecular weight test described in Quasi-drug raw material standard 2006.

[Average molecular weight test]
About 4.0 g of the antiperspirant composition of the present invention is accurately weighed, placed in an about 200 mL pressure-resistant stopper bottle, added with about 25 mL of pyridine, dissolved by heating, and allowed to cool. Separately, 42 g of phthalic anhydride is taken, added to a 1 L light-shielded stoppered bottle containing 300 mL of freshly distilled pyridine, and shaken vigorously to dissolve, then left for 16 hours or longer. Take 25 mL of this solution accurately, add it to the previous pressure stopper bottle, seal it tightly, wrap it in a strong cloth, and place it in a water bath preheated to 98 ° C. ± 2 ° C. At this time, the liquid in the bottle is immersed in the liquid in the water bath. After heating at 98 ° C. ± 2 ° C. for 30 minutes, the mixture is allowed to cool to room temperature. Next, 50 mL of 0.5 mol / L sodium hydroxide solution is accurately added, and this solution is titrated with 0.5 mol / L sodium hydroxide solution (indicator: 5 drops of pyridine solution of phenolphthalein (1 → 100)). . However, the end point of the titration is when the liquid exhibits a light red color lasting 15 seconds. A blank test is performed in the same manner.
Average molecular weight = (S × 4,000) / (ab)
However, S, a, and b in the said formula are as follows.
S: Amount of sample (g)
a: Consumption of 0.5 mol / L sodium hydroxide solution in the blank test (mL)
b: Consumption of the 0.5 mol / L sodium hydroxide solution in the sample test (mL)

  As the polyethylene glycol of the component (D), a commercially available product can be used. Examples of the commercially available product include trade name: PEG # 400 (average molecular weight: 380-420), trade name: PEG # 600 ( (Average molecular weight: 570-630), trade name: PEG # 1000 (average molecular weight: 950-1,050), trade name: PEG # 1540 (average molecular weight: 1,290-1,650), trade name: PEG # 2000 (Average molecular weight 1,850 to 2,150), (above, manufactured by Lion Corporation) and the like. These may be used alone or in combination of two or more. Among these, PEG # 400, PEG # 600, PEG # 1000, PEG # 1540, and PEG # 2000 are preferable, PEG # 600, PEG # 1000, and PEG # 1540 are more preferable, and PEG # 1540 is more preferable from the viewpoint of the smooth feeling of the skin. # 1000 is particularly preferred.

  The content of the polyethylene glycol as the component (D) is 0.1% by mass with respect to the total amount of the antiperspirant composition from the viewpoint of the smoothness of the skin, the durability of the antiperspirant effect, and the non-stickiness of the skin. % To 5% by mass is preferable, and 0.5% to 2% by mass is more preferable. If the content is less than 0.1% by mass, the dry feeling of the skin and the sustainability of the antiperspirant effect may be insufficient. If the content exceeds 5% by mass, the dry feeling of the skin and the skin The non-stickiness may be insufficient.

<(E) Neutralizing agent>
The neutralizing agent of the component (E) is contained in order to improve the sustainability of the antiperspirant effect.

  Examples of the neutralizing agent for the component (E) include monoethanolamine, diethanolamine, triethanolamine, and 2-amino-2-methyl-1-propanol. These may be used individually by 1 type and may use 2 or more types together. Among these, 2-amino-2-methyl-1-propanol is preferable from the viewpoint of durability of the antiperspirant effect.

  The content of the neutralizing agent of the component (E) is 0.05% by mass to 0% with respect to the total amount of the antiperspirant composition from the viewpoint of durability of the antiperspirant effect and lack of irritation to the skin. 0.3 mass% is preferable, and 0.1 mass% to 0.3 mass% is more preferable. When the content is less than 0.05% by mass, the sustainability of the antiperspirant effect may be insufficient, and when it exceeds 0.3% by mass, irritation to the skin may occur in sensitive skin. is there.

  Examples of the apparatus used for neutralization of the component (E) with a neutralizing agent include a Metrohm potentiometric automatic titration apparatus (manufactured by Metrohm Japan).

<Mass ratio [(A + B) / D]>
The sum (A + B) of the content (mass%) of (A) antiperspirant and the content (mass%) of (B) vinyl type anionic polymer, and the content (mass%) of (D) polyethylene glycol. The mass ratio [(A + B) / D] is from 2 to 128, and preferably from 4 to 35, from the viewpoint of the smooth feeling of the skin and the non-stickiness of the skin. When the mass ratio [(A + B) / D] is less than 2, the non-stickiness of the skin becomes insufficient, and when it exceeds 128, the dry feeling of the skin becomes insufficient.

<Other ingredients>
The other components are not particularly limited and can be appropriately selected depending on the purpose. In addition to the components (A) to (E), the effects of the present invention are not impaired. Other components can be contained. Examples of the other components include oil and fat compounds, wax compounds, silicone compounds, hydrocarbon oils, higher fatty acids, higher alcohols, surfactants, polymer compounds other than the component (B), antioxidants, dyes, and emulsifications. Stabilizers, pH adjusters, preservatives, UV absorbers, chelating agents, moisturizers, thickeners such as hydroxypropyl cellulose, cooling agents, anti-inflammatory agents, bactericides such as isopropyl cellulose, amino acids, vitamins, fragrances, Examples include various plant extracts.

-PH-
The pH at 25 ° C. of the antiperspirant composition is preferably 3 to 4.5 from the viewpoints of the antiperspirant effect, the persistence of the antiperspirant effect, and the non-stickiness of the skin. When the pH is less than 3, the antiperspirant effect and the persistence of the antiperspirant effect may be insufficient, and when it exceeds 4.5, the non-stickiness of the skin may be insufficient. . The pH can be measured using a pH meter (HM-30G, manufactured by Toa Denpa Kogyo Co., Ltd.).

-Viscosity-
The viscosity of the antiperspirant composition is not particularly limited and may be appropriately selected depending on the intended purpose. However, in the case of a liquid, the viscosity of the antiperspirant composition and the non-stickiness of the skin are 25. At ° C., 1 mPa · s to 3,000 mPa · s is preferable, and 5 mPa · s to 1,600 mPa · s is more preferable. If the viscosity is less than 1 mPa · s, the sustainability of the antiperspirant effect may be insufficient, and if it exceeds 3,000 mPa · s, the non-stickiness of the skin may be insufficient.
The viscosity is, for example, No. 1 at 25 ° C. using a BL type viscometer. 1-4 rotors can be used, and measurement can be performed at 60 rpm for 1 minute.

-Dosage form-
There is no restriction | limiting in particular as a dosage form of the said antiperspirant composition, According to the objective, it can select suitably, For example, a solid type, a semi-solid type, a gel type, a liquid type etc. are mentioned. Among these, gel-type and liquid-type are preferable because it is effective for expression of the effect of being applied to the skin in a state dissolved in moisture, can be applied with high adhesion, and can exhibit a high antiperspirant effect. A type is more preferable.
Examples of the solid type include a stick type.
Examples of the semi-solid type include a cream type.
Examples of the gel type include a gel type.
Examples of the liquid type include a roll-on type, a lotion type, and a mist type. Among these, the roll-on type is preferable from the viewpoint of the antiperspirant effect.

When the antiperspirant composition is made into a roll-on type, it is preferable to make an antiperspirant product comprising the antiperspirant composition and a roll-on container having an application ball filled with the composition. The roll-on type preparation is housed in a known roll-on container, and a part of the roll-on container is exposed, and the antiperspirant composition is attached to a ball that is rotatably held by a holder. Such a ball can be applied to the skin.
Moreover, the gel formulation which fills the said antiperspirant composition in a bottle container, and apply | coats as it is using a container, the gel formulation applied using a fingertip and a hand, and a lotion formulation can also be used suitably.

-Manufacturing method-
There is no restriction | limiting in particular as a manufacturing method of the said antiperspirant composition, According to the objective, it can select suitably, For example, the said (A) component-the said (E) component, and the said other component are mixed. Can be prepared. Specifically, the component (B) is charged into the component (C) and dissolved uniformly, and then the component (A) is charged. Next, the component (D), water and the other components are added, and uniformly dissolved and mixed. Thereafter, the antiperspirant composition can be obtained by neutralizing with the component (E) and blending the remaining amount so that the whole of the antiperspirant composition is 100% by mass.
There is no restriction | limiting in particular as an apparatus which prepares the said antiperspirant composition, According to the objective, it can select suitably, For example, it equips with the several stirring blade (propeller, turbine, disper, etc.) which can be mixed with shearing. And a stirrer. In addition, as said (A) component-said (E) component, and said other component, in preparing an antiperspirant composition, you may use individually, respectively, and 2 or more types of components are included. You may use it in the state of a mixture.

-Container-
Examples of the container include a roll-on container, a gel bottle container, a lotion bottle container, and a mist trigger spray container. Among these, a roll-on container is preferable from the viewpoint of easy application to the skin. The roll-on container can be suitably used in that the antiperspirant composition can be applied to the skin with high adhesion, and an antiperspirant effect can be exhibited. The roll-on container is not particularly limited as long as it can be filled with the antiperspirant composition, and can be appropriately selected according to the purpose. For example, those described in JP-A-2005-186997 Is mentioned.

  Examples of the roll-on container include a bottle (material: HDPE natural, full-fill volume: about 56 mL, trunk diameter: diameter about 33 mm, height: about 87 mm, manufactured by Yoshino Kogyo Co., Ltd.), ring (material: LLDPE natural) , Outer diameter: about 26 mm, height: about 18 mm, manufactured by Yoshino Kogyo Co., Ltd.), balls (material: PP white, diameter: about 20 mm, manufactured by Yoshino Kogyo Co., Ltd.), and the like.

  Examples of the bottle container for the gel include, for example, a bottle (trade name: TOMII, material: HDPE natural, full fill capacity: about 34 mL, trunk diameter: diameter of about 39 mm × 24 mm (oval), height: about 76 mm, Takemoto container Co., Ltd.), inner plug (trade name: TO cap nozzle B, material: PE natural, outer diameter: about 12 mm, height: about 13 mm, manufactured by Takemoto Container Co., Ltd.), cap (trade name: TO cap, material) : AS / PP white, outer diameter: diameter of about 37 mm × 23 mm (oval), height: about 22 mm, manufactured by Takemoto Container Co., Ltd., etc. can be used.

-Application-
The antiperspirant composition of the present invention further improves the skin and has good skin feeling, antiperspirant effect, durability of antiperspirant effect, non-stickiness of skin, and no irritation to the skin. Therefore, it can be applied to, for example, cosmetics, pharmaceuticals, quasi drugs, and is suitable for antiperspirants, deodorants, antiperspirants, and deodorants.

  Hereinafter, the present invention will be described more specifically based on examples and comparative examples, but the present invention is not limited to the following examples. In addition, all the content of each component of description of an Example and a comparative example is the value converted into a pure part.

(Examples 1-34 and Comparative Examples 1-9)
Antiperspirant compositions having the compositions and contents shown in Tables 1 to 9 below were prepared by the following method. That is, the component (B) was added to the component (C) and dissolved uniformly, and then the component (A) was added. Then, (D) component or (D ') component, purified water, and a common component were thrown in, and it melt | dissolved and mixed uniformly. Then, it neutralized with (E) component and obtained the composition whose pH in 25 degreeC is 3-4.5. Note that the antiperspirant composition of Comparative Example 3 could not be formulated because it did not contain the component (C) ethanol serving as a solvent. The neutralization with the component (E) was confirmed using a Metrohm potentiometric automatic titrator (manufactured by Metrohm Japan). The pH was measured using a pH meter (manufactured by Toa Denpa Kogyo Co., Ltd., HM-30G).
Next, 40 mL of the antiperspirant compositions of Examples 1 to 33 and Comparative Examples 1, 2, and 4 to 9 were filled in a roll-on container (container A) having the following specifications. Moreover, 20 mL of the antiperspirant composition of Example 34 was filled in a bottle container for containers (container B) having the following specifications.

-Roll-on container (container A)-
・ Bottle (Material: HDPE natural, full capacity: approx. 56 mL, body diameter: approx. 33 mm in diameter, height: approx. 87 mm, manufactured by Yoshino Kogyo Co., Ltd.)
・ Ring (Material: LLDPE natural, outer diameter: approx. 26 mm, height: approx. 18 mm, manufactured by Yoshino Kogyo Co., Ltd.)
・ Ball (Material: PP white, diameter: approx. 20 mm, manufactured by Yoshino Kogyo Co., Ltd.)

-Bottle container for gel (container B)-
・ Bottle (trade name: TOMII, material: HDPE natural, full-fill volume: approx. 34 mL, trunk diameter: diameter approx. 39 mm × 24 mm (oval), height: approx. 76 mm, manufactured by Takemoto Container Co., Ltd.)
・ Inner stopper (Product name: TO cap nozzle B, Material: PE natural, Outer diameter: approx. 12 mm, Height: approx. 13 mm, Takemoto Container Co., Ltd.)
・ Cap (trade name: TO cap, material: AS / PP white, outer diameter: diameter approximately 37 mm × 23 mm (oval), height: approximately 22 mm, manufactured by Takemoto Container Co., Ltd.)

  About the prepared antiperspirant compositions of Examples 1 to 34 and Comparative Examples 1, 2, and 4 to 9, “antiperspirant effect”, “persistence of antiperspirant effect”, “skin” "Smoothness of skin", "Skinlessness of skin", "Smoothness of skin", and "No irritation to skin" were evaluated. The results are shown in Tables 1-9. In addition, since the antiperspirant composition of the comparative example 3 did not contain ethanol of (C) component used as a solvent, it could not be formulated and could not be evaluated.

<Antiperspirant effect and persistence of antiperspirant effect>
For 20 professional panelists, 0.5 g of antiperspirant composition was applied as a sample to one axilla, and exercise bike (trade name: FB-300HP, manufactured by Remark) in an environment of 38 ° C. and relative humidity of 40%. Exercise was performed for 15 minutes. Then, the axilla (sample application part) to which the sample was applied using a sweat meter (trade name: SKN-2000, manufactured by Nishizawa Denki Keiki Seisakusho Co., Ltd.) and the other axilla to which the sample was not applied (sample non-application part) The amount of sweating was measured, and the antiperspirant rate was determined from the following formula. A result shows the average value of 20 professional panelists. From the results of the antiperspirant rate, the “antiperspirant effect” was evaluated based on the following evaluation criteria. Thereafter, the exercise by the exercise bike was further performed for 30 minutes, and “sustainability of antiperspirant effect” was evaluated by the same evaluation method.
-Evaluation criteria for antiperspirant effect and persistence of antiperspirant effect-
◎: Antiperspiratory rate is 56% or more and 100% or less ◎ to ○: Antiperspirant rate is 46% or more and less than 56% ○: Antiperspirant rate is 36% or more and less than 46% △: Antiperspirant rate is 26% or more and less than 36% X: Antiperspirant rate is 0% or more and less than 26%

<Feeling of skin>
For 20 professional panelists, 0.5 g of each antiperspirant composition was applied to the axilla, and “smooth skin feeling” was evaluated based on the following evaluation criteria.
-Evaluation criteria-
◎: 19 to 20 of 20 professional panelists answered that the skin feels smooth ◎ ~ ○: 16 to 18 of 20 panelists answered that the skin feels smooth ○: Expert panel 11 to 15 out of 20 respondents say that the skin feels smooth △: 6 to 10 out of 20 professional panelists respond that the skin feels good ×: 5 or less out of 20 expert panelists Replied that the skin feels smooth

<No skin tightness>
For 20 professional panelists, 0.5g of each antiperspirant composition was applied to the axilla and dried,
Based on the following evaluation criteria, “no skin tension” was evaluated.
-Evaluation criteria-
◎: 19 to 20 out of 20 professional panelists responded that there was no feeling of skin tightness ◎ ~ ○: 16 to 18 or less of 20 professional panelists answered that there was no feeling of skin feeling ○: Professional panelist 11 to 15 out of 20 respondents said that there was no feeling of skin tightness △: 6 or more of 20 professional panelists answered that there was no feeling of skin ×: 5 or less of 20 expert panelists answered Responded that there was no feeling of skin tightness

<No sticky skin>
For 20 professional panelists, 0.5 g of each antiperspirant composition was applied to the axilla and allowed to dry, and then “non-sticky skin” was evaluated based on the following evaluation criteria.
-Evaluation criteria-
◎: 19 to 20 out of 20 professional panelists responded that there was no skin stickiness ◎ ~ ○: 16 to 18 or less of 20 professional panelists responded that there was no skin stickiness ○: 20 professional panelists 11 to 15 of them answered that there was no skin stickiness △: 6 to 10 or less of 20 professional panelists responded that there was no skin stickiness ×: 5 or less of 20 professional panelists responded to skin stickiness No answer

<No skin irritation>
For 20 professional panelists, 0.5 g of each antiperspirant composition was applied to the axilla and dried, and then “no skin irritation” was evaluated based on the following evaluation criteria.
-Evaluation criteria-
◎: 16 to 20 out of 20 professional panelists responded that there was no skin irritation ○: 11 to 15 out of 20 professional panelists answered that there was no skin irritation △: 20 specialized panelists 6 to 10 of them answered that there was no irritation to the skin ×: 5 or less of 20 professional panelists answered that there was no irritation to the skin

The details of various components used in the examples and comparative examples are shown in Table 10 below.

  The antiperspirant composition of the present invention further improves the skin, makes the skin feel tight and smooth, and has a good antiperspirant effect, long-lasting antiperspirant effect, and good skin non-stickiness. Therefore, it can be applied to, for example, cosmetics, pharmaceuticals, quasi-drugs, etc., and is suitable for antiperspirants, deodorants, antiperspirants, deodorants, deodorant sprays, and the like.

Claims (8)

(A) at least one antiperspirant selected from aluminum compounds, zirconium compounds, and complexes thereof;
(B) a vinyl type anionic polymer;
(C) ethanol,
(D) polyethylene glycol having an average molecular weight of 380 to 2,150;
(E) a neutralizing agent,
The sum (A + B) of the content (mass%) of (A) antiperspirant and the content (mass%) of (B) vinyl type anionic polymer, and the content (mass%) of (D) polyethylene glycol. And the mass ratio [(A + B) / D] is 2 to 128.   The antiperspirant composition according to claim 1, wherein the (A) antiperspirant is chlorohydroxyaluminum.   The (B) vinyl type anionic polymer is selected from (vinyl acetate / crotonic acid / vinyl neodecanoate) copolymers, (vinyl methyl ether / butyl maleate) copolymers, and (vinyl methyl ether / butyl maleate) copolymers. The antiperspirant composition according to claim 1, wherein the antiperspirant composition is at least one.   4. The antiperspirant composition according to claim 1, wherein (D) polyethylene glycol has an average molecular weight of 570 to 1,650.   The antiperspirant composition according to any one of claims 1 to 4, wherein the (E) neutralizing agent is 2-amino-2-methyl-1-propanol. Content of said (A) antiperspirant is 6 mass%-15 mass%,
Content of the said (B) vinyl type anionic polymer is 1 mass%-2.5 mass%,
Content as said (C) absolute ethanol is 60 mass%-75 mass%,
Content of the said (D) polyethyleneglycol is 0.5 mass%-2 mass%,
The antiperspirant composition according to any one of claims 1 to 5, wherein the content of the (E) neutralizing agent is 0.1 mass% to 0.3 mass%.   The antiperspirant composition according to any one of claims 1 to 6, wherein the (D) polyethylene glycol has an average molecular weight of 950 to 1,050.   The antiperspirant composition according to any one of claims 1 to 7, which is any one selected from a roll-on type, a gel type, a lotion type, and a mist type.