JP6553404B2 - Antiperspirant composition - Google Patents

Description

  The present invention relates to antiperspirant compositions.

  Conventionally, an antiperspirant contains an antiperspirant component and a powder for the purpose of suppressing the generation of sweat and feeling of perspiration, and improving the persistence thereof, and a silicone resin powder is contained as the powder. (See, for example, Patent Document 1). However, the antiperspirant containing the silicone resin powder has a problem of poor redispersibility when the silicone resin powder aggregates and precipitates.

  In order to solve the above problem, for example, (A) silicone resin powder, (B) amphoteric polymer, (C) polyoxyethylene alkyl ether having an average addition mole number of ethylene oxide of 10 to 100, (D) water, and (E) Cosmetics that are excellent in redispersibility and have a smooth skin feel have been proposed by containing chlorohydroxyaluminum (see, for example, Patent Document 2).

  However, in the above proposal, the solvent is a cosmetic mainly composed of water. If a solvent containing 50% by mass or more of ethanol is used instead of water, the silicone resin powder is solidified although drying during use is improved. There is a problem that redispersibility is lowered, sufficient antiperspirant effect is not obtained, white skin remains on the skin, and the skin becomes sticky during use.

  Therefore, even if it contains 50% by mass or more of ethanol, the antiperspirant composition having good non-stickiness on the skin and no non-whitening on the skin at the time of use and having excellent antiperspirant effect and redispersibility It is desirable to provide

JP, 2005-187379, A Unexamined-Japanese-Patent No. 2013-112680

  An object of the present invention is to solve the above-mentioned problems in the prior art and to achieve the following objects. That is, according to the present invention, even if it contains 50% by mass or more of ethanol, it has good non-stickiness of the skin at the time of use and no white residue on the skin, and is excellent in antiperspirant effect and redispersibility. It is an object to provide a sweat composition.

  As a result of intensive investigations by the present inventors to solve the above problems, (A) 2% by mass to 20% by mass of a water-soluble aluminum compound, (B) silicone resin powder, and (C) average addition mole of ethylene oxide Containing 0.1 to 3% by mass of polyoxyethylene alkyl ether having a number of 2 to 8 and (D) 50 to 85% by mass of ethanol, and the content (mass of component (A)) %) And the mass ratio (A / C) of the content (mass%) of the component (C) is 2 to 100, the antiperspirant composition has a synergistic effect of 50 mass% or more. Even in an ethanol-based solvent system containing ethanol, by setting the average addition mole number of ethylene oxide of the polyoxyethylene alkyl ether of the component (C) in the range of 2 to 8, a water-soluble aluminum compound, and It is possible to prevent caking of recone resin powder, lack of stickiness of the skin during use, and white remaining lack of the skin is good, was found that excellent antiperspirant effect, as well as re-dispersibility.

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) 2% by mass to 20% by mass of a water-soluble aluminum compound,
(B) silicone resin powder;
(C) 0.1% by mass to 3% by mass of polyoxyethylene alkyl ether having an average added mole number of ethylene oxide of 2 to 8, and
(D) 50% by mass to 85% by mass of ethanol,
The mass ratio of the content (mass%) of the (A) water-soluble aluminum compound to the content (mass%) of the polyoxyethylene alkyl ether in which the average addition mole number of the (C) ethylene oxide is 2 to 8 (mass%) A / C) is an antiperspirant composition characterized by being 2 to 100.
<2> (B) The content of the silicone resin powder is 0.2% by mass to 3% by mass,
(D) The antiperspirant composition according to <1>, wherein the ethanol content is 60% by mass to 80% by mass.
<3> The mass ratio of (A) the content (mass%) of the water-soluble aluminum compound to the content (mass%) of the polyoxyethylene alkyl ether in which the average addition mole number of (C) ethylene oxide is 2 to 8 (A / C) is the antiperspirant composition according to any one of <1> to <2>, wherein 5 to 30.
<4> Mass ratio of (B) content (mass%) of silicone resin powder and (C) content (mass%) of polyoxyethylene alkyl ether having an average added mole number of ethylene oxide of 2 to 8 The antiperspirant composition according to any one of <1> to <3>, wherein (B / C) is 0.5 to 2.
The content of a <5> (A) water-soluble aluminum compound is an antiperspirant composition in any one of said <1> to <4> which is 5 mass%-15 mass%.
<6> (A) The antiperspirant composition according to any one of <1> to <5>, wherein the water-soluble aluminum compound is chlorhydroxyaluminum.
<7> (C) Polyoxyethylene alkyl ether having an average addition mole number of ethylene oxide of 2 to 8, polyoxyethylene stearyl ether having an average addition mole number of ethylene oxide of 3 to 5, and an average addition mole number of ethylene oxide And at least one selected from polyoxyethylene lauryl ether having an average addition mole number of ethylene oxide of 5 and polyoxyethylene oleyl ether having an average addition mole number of ethylene oxide of 5. It is an antiperspirant composition in any one of said <1> to <6>.
<8> The antiperspirant composition according to any one of <1> to <7>, which is filled in a roll-on container.

  According to the present invention, the conventional problems can be solved and the object can be achieved. Even when ethanol is contained in an amount of 50% by mass or more, the skin does not become sticky during use, and the skin remains white. It is possible to provide an antiperspirant composition which is superior in anti-perspirant properties and excellent in antiperspirant effect as well as redispersibility.

(Antiperspirant composition)
The antiperspirant composition of the present invention comprises (A) a water-soluble aluminum compound, (B) silicone resin powder, (C) polyoxyethylene alkyl ether, and (D) ethanol, and further may contain And other components.

<(A) Water-soluble aluminum compound>
The water-soluble aluminum compound (A) is contained to improve the antiperspirant effect. Here, the “water-soluble” of the water-soluble aluminum compound of the component (A) refers to the property of forming an aqueous solution by dissolving in water.

  Examples of the water-soluble aluminum compound as the component (A) include aluminum chloride, aluminum sulfate, potassium aluminum sulfate, aluminum acetate, chlorohydroxyaluminum, chlorohydroxyaluminum / zirconium-glycine complex, chlorohydroxyaluminum / propylene glycol complex, bromo Hydroxy aluminum, allantoin chlor hydroxy aluminum etc. are mentioned. These may be used alone or in combination of two or more. Among these, in terms of antiperspirant effect, chlorohydroxyaluminum, chlorohydroxyaluminum / propylene glycol complex, and chlorohydroxyaluminum / zirconium / glycine complex are preferable, and in particular, chlorohydroxyaluminum is more preferable.

  The content of the water-soluble aluminum compound of the component (A) is 2 with respect to the total amount of the antiperspirant composition in terms of the antiperspirant effect, no stickiness during use, and no white residue on the skin. It is mass%-20 mass%, and 5 mass%-15 mass% is preferable. When the content is less than 2% by mass, the antiperspirant effect may be insufficient. When the content exceeds 20% by mass, no stickiness during use and no white residue on the skin may occur. There is.

<(B) Silicone resin powder>
The silicone resin powder of the component (B) is contained in order to improve the non-stickiness of the skin during use.
The silicone resin powder of the component (B) is a powder made of a compound having a siloxane skeleton. There is no restriction | limiting in particular as a structure of the silicone resin powder of the said (B) component, According to the objective, it can select suitably, For example, linear structure, cyclic structure, branched structure, network structure, bridge | crosslinking Structure etc. are mentioned. Among these, a network structure and a crosslinked structure are preferable from the viewpoint of non-stickiness of the skin at the time of use.

  As the silicone resin powder of the component (B), the siloxane skeleton has one or more substituents such as polyether group, epoxy group, amino group, carboxyl group, aralkyl group, methyl group, and phenyl group. It may be modified by Among these, from the point of non-stickiness of the skin at the time of use, a methyl group is preferable, and silsesquioxane having a methyl group is more preferable.

  The silicone resin powder of the component (B) may be composed of the silicone resin powder alone, but is coated with an inorganic powder such as titanium oxide, zirconium oxide, iron oxide or the like. It may be

  As a shape of the silicone resin powder of the said (B) component, spherical shape, rod shape, plate shape, an indeterminate form etc. are mentioned, for example. Among these, spherical shape is preferable from the viewpoint of no stickiness of the skin at the time of use. The term "spherical" means not only true spheres but also those having an elliptical cross section, and among these, true spheres are preferred.

  There is no restriction | limiting in particular as a volume average particle diameter of the silicone resin powder of the said (B) component, Although it can select suitably according to the objective, 3 micrometers-30 micrometers are preferable, and 4 micrometers-12 micrometers are more preferable. When the volume average particle size is less than 3 μm or more than 30 μm, redispersibility and non-stickiness of the skin during use may be insufficient. The volume average particle diameter can be measured by a laser diffraction / scattering particle size distribution measuring apparatus (for example, LS 13 320, manufactured by Beckman Coulter, Inc.) or the like.

  As the silicone resin powder of the component (B), polymethylsilsesquioxane which is a reticulated polymer of methylsilsesquioxane, and dimethicone are crosslinked in a three-dimensional structure (dimethicone / vinyl dimethicone) crosspolymer, Examples thereof include (vinyl dimethicone / methicone silsesquioxane) crosspolymer in which the surface of silicone rubber powder is coated with silicone resin. These may be used alone or in combination of two or more. Among these, (vinyl dimethicone / methicone silsesquioxane) crosspolymer is preferable from the viewpoint of non-stickiness of the skin at the time of use.

As a method for producing polymethylsilsesquioxane which is a reticulated polymer of methylsilsesquioxane, it can be obtained by precipitation as fine particles by dehydration condensation reaction after hydrolysis of methylsilsesquioxane.
As a method for producing a (dimethicone / vinyl dimethicone) crosspolymer in which the dimethicone is crosslinked into a three-dimensional structure, a silicon-bonded hydrogen-containing diorganopolysiloxane, an organopolysiloxane having a silicon-bonded vinyl group and a platinum catalyst are used. It can be obtained by micronizing the addition reaction and curing into spherical particles.
An alkaline substance and methyltrimethoxysilane are added to an aqueous dispersion of silicone rubber spherical fine particles as a method of producing a crosspolymer in which the surface of the silicone rubber powder is coated with a silicone resin (vinyl dimethicone / methicone silsesquioxane) Then, after hydrolysis and condensation reaction, it can be obtained by drying and crushing into fine particles.

There is no restriction | limiting in particular as a silicone resin powder of the said (B) component, What was synthesize | combined suitably may be used and you may use a commercial item.
Examples of the commercially available product include a trade name: “Tospearl 145A” (volume average particle diameter: 4.5 μm), a trade name: “Tospearl 2000B” (volume average particle diameter: 6 μm), and a trade name: “Tospearl 1110A” ( Volume average particle size: 11 μm (above, manufactured by Momentive Performance Materials), trade name: “Trefill E-506S” (volume average particle size: 3 μm, manufactured by Toray Dow Corning), trade name: “KSP -100 ”(volume average particle diameter: 5 μm), trade name:“ KSP-101 ”(volume average particle diameter: 12 μm), trade name:“ KSP-102 ”(volume average particle diameter: 30 μm) (Shin-Etsu Chemical Co., Ltd.) Manufactured by the same company). These may be used alone or in combination of two or more. Among these, the product name: “KSP-100”, the product name: “KSP-101”, the product name: “KSP-102”, the product name, from the point of non-stickiness of the skin at the time of use and redispersibility. : “Tospearl 2000B” is preferable, product name: “KSP-100”, and product name: “Tospearl 2000B” are more preferable.

  The content of the silicone resin powder of the component (B) is 0 with respect to the total amount of the antiperspirant composition from the viewpoint of no stickiness during use, no white residue on the skin, and redispersibility. 2 mass%-3 mass% are preferable, and 0.5 mass%-2 mass% are more preferable. When the content is less than 0.2% by mass, the non-stickiness during use may be insufficient. When the content exceeds 3% by mass, the white residue on the skin is inferior and redispersibility. May be inadequate.

<(C) Polyoxyethylene alkyl ether having an average addition mole number of ethylene oxide of 2 to 8>
The polyoxyethylene alkyl ether of the component (C) is contained to improve the non-stickiness of the skin during use, the non-whiteness on the skin, and the redispersibility.

  The average added mole number of ethylene oxide (EO) of the polyoxyethylene alkyl ether of the component (C) is 2 to 8 and preferably 3 to 5 from the point of non-stickiness of the skin during use. When the average addition mole number of the ethylene oxide (EO) exceeds 8, the water soluble aluminum compound of the component (A) and the silicone resin powder of the component (B) are easily solidified, and the redispersibility is inferior, and at the time of use The lack of stickiness and the lack of whiteness to the skin may be inadequate. In addition, the polyoxyethylene alkyl ether in which the average added mole number of the said ethylene oxide (EO) is less than 2 is not marketed at present.

  As carbon number of the alkyl group of the polyoxyethylene alkyl ether of said (C) component, 12-24 are preferable and 12-22 are more preferable from the point of re-dispersibility and the non-stickiness of the skin at the time of use. The alkyl group may be linear or branched, and may be saturated or unsaturated. When the carbon number of the alkyl group is less than 12, the tackiness of the skin at the time of use may be insufficient, and when it is more than 24, the tackiness at the time of use and white residue on the skin are not Inadequacy may be inadequate.

  Examples of the polyoxyethylene alkyl ether of the component (C) include polyoxyethylene (3) lauryl ether, polyoxyethylene (5) lauryl ether, polyoxyethylene (2-8) stearyl ether, polyoxyethylene (5 ) Isocetyl ether, polyoxyethylene (5) isostearyl ether, polyoxyethylene (5) octyldodecyl ether, polyoxyethylene (3) oleyl ether, polyoxyethylene (5) oleyl ether, polyoxyethylene (3) cetyl Ether, polyoxyethylene (5) behenyl ether, polyoxyethylene (5) decyl tetradecyl ether, etc. may be mentioned. These may be used alone or in combination of two or more. Among them, polyoxyethylene (5) lauryl ether, polyoxyethylene (2 to 8) stearyl ether, poly from the viewpoint of no stickiness of the skin at the time of use, no white residue on the skin, and redispersibility. Oxyethylene (5) isocetyl ether, polyoxyethylene (5) isostearyl ether, polyoxyethylene (5) oleyl ether, polyoxyethylene (5) behenyl ether, and polyoxyethylene (5) decyl tetradecyl ether are preferable, Polyoxyethylene (5) lauryl ether, polyoxyethylene (3 to 5) stearyl ether, polyoxyethylene (5) isostearyl ether, polyoxyethylene (5) oleyl ether is more preferable, and polyoxyethylene (5) lauryl ether , Polyoxyethylen (3) stearyl ether, polyoxyethylene (5) stearyl ether, polyoxyethylene (5) isostearyl ether, polyoxyethylene (5) oleyl ether is particularly preferred. In addition, the number in () shows the average added mole number of ethylene oxide (EO).

  A commercial item can be used as polyoxyethylene alkyl ether of said (C) component, As said commercial item, for example, polyoxyethylene (3) lauryl ether (brand name: "EMALEX703"), polyoxyethylene (5) Lauryl ether (trade name: “EMALEX 705”), polyoxyethylene (2) stearyl ether (trade name: “EMALEX 602”), polyoxyethylene (3) stearyl ether (trade name: “EMALEX 603”), polyoxy Ethylene (5) stearyl ether (trade name: “EMALEX 605”), polyoxyethylene (8) stearyl ether (trade name: “EMALEX 608”), polyoxyethylene (5) isocetyl ether (trade name: “EMALEX 1605”), Polioki Ethylene (5) isostearyl ether (trade name: “EMALEX 1805”), polyoxyethylene (5) octyldodecyl ether (trade name: “EMALEXOD-5”), polyoxyethylene (3) oleyl ether (trade name: “EMALEX 503”) ], Polyoxyethylene (5) oleyl ether (trade name: “EMALEX 505”), polyoxyethylene (3) cetyl ether (trade name: “EMALEX 103”), polyoxyethylene (5) behenyl ether (trade name: “ EMALEX BHA-5 ′ ′), polyoxyethylene (5) decyl tetradecyl ether (trade name: “EMALEX 2405”) (all manufactured by Nippon Emulsion Co., Ltd.). These may be used alone or in combination of two or more. Among these, polyoxyethylene (5) lauryl ether (trade name: “EMALEX 705”), polyoxyethylene (from the point of non-stickiness of the skin when used, lack of white residue on the skin, and redispersibility) 3) Stearyl ether (trade name: “EMALEX 603”), polyoxyethylene (5) Stearyl ether (trade name: “EMALEX 605”), polyoxyethylene (5) isocetyl ether (trade name: “EMALEX 1605”), polyoxy Ethylene (5) isostearyl ether (trade name: “EMALEX 1805”), polyoxyethylene (3) oleyl ether (trade name: “EMALEX 503”), polyoxyethylene (5) behenyl ether (trade name: “EMALEX BHA-5” "), Polyoxyethylene (5) Rutetradecyl ether (trade name: “EMALEX 2405”) is preferable, polyoxyethylene (5) lauryl ether (trade name: “EMALEX 705”), oxyethylene (3) stearyl ether (trade name: “EMALEX 603”), oxyethylene (5) Stearyl ether (trade name: “EMALEX 605”), polyoxyethylene (5) isostearyl ether (trade name: “EMALEX 1805”), polyoxyethylene (5) oleyl ether (trade name: “EMALEX 505”) preferable.

  As content of the polyoxyethylene alkyl ether of the said (C) component, it is with respect to the antiperspirant composition whole amount from the point of no stickiness of the skin at the time of use, non-whitening to skin, and redispersibility. And 0.1 to 3% by mass, preferably 0.5 to 2% by mass. When the content is less than 0.1% by mass, the non-stickiness of the skin during use, the lack of white residue on the skin, and redispersibility may be insufficient, and the content exceeds 3% by mass. In addition, the skin may become tacky and redispersible at the time of use.

<Mass ratio (A / C)>
The content (mass%) of the water-soluble aluminum compound of the component (A) and the content (mass%) of a polyoxyethylene alkyl ether in which the average addition mole number of ethylene oxide of the component (C) is 2 to 8 The mass ratio of (A / C) is 2 to 100, preferably 5 to 30, from the viewpoints of no stickiness of the skin at the time of use, no white residue on the skin, and redispersibility. When the mass ratio (A / C) is less than 2, the skin may not be sticky during use, the white residue on the skin may not be sufficient, and the redispersibility may be insufficient. , The non-stickiness of the skin during use, and the redispersibility may be insufficient.

<Mass ratio (B / C)>
The content (mass%) of the silicone resin powder of the component (B) and the content (mass%) of polyoxyethylene alkyl ether having an average added mole number of ethylene oxide of the component (C) of 2 to 8 The mass ratio of (B / C) is preferably 0.3 to 10, and 0.5 to 2 in view of no stickiness of the skin at the time of use, no white residue on the skin, and redispersibility. More preferable. When the mass ratio (B / C) is less than 0.3, the non-stickiness of the skin during use, the lack of white residue on the skin, and the redispersibility may be insufficient. When it exceeds, redispersibility may become inadequate.

<(D) ethanol>
The ethanol of the component (D) is contained to improve the non-stickiness of the skin at the time of use, the absence of white residue on the skin, and redispersibility.
Examples of the ethanol of component (D) include absolute ethanol, 95% by volume ethanol (standard value 95% to 95.5% by volume), and the like. These may be used alone or in combination of two or more. Among these, anhydrous ethanol is preferable from the point of non-stickiness of the skin at the time of use.

  The content of the ethanol of the component (D) is absolute ethanol with respect to the total amount of the antiperspirant composition from the viewpoint of non-stickiness of the skin at the time of use, lack of white residue on the skin, and redispersibility. It is 50 mass%-85 mass% in conversion, and 60 mass%-80 mass% are preferable. If the content of the ethanol is less than 50% by mass, the skin may not be sticky, the whiteness on the skin may not be sufficient, and the redispersibility may be insufficient, and it exceeds 85% by mass. And redispersibility may be insufficient. When the content of the ethanol is 50% by mass or more, when the antiperspirant composition is applied to the skin, the skin is not sticky, and the applied antiperspirant composition is easily dried, and it is difficult to be attached to clothes There is.

As content of ethanol of the said (D) component, when a plant extract etc. are contained as another component, it is total content of the absolute ethanol containing the ethanol carried in from these components.
The content (mass%) in terms of absolute ethanol when 95% by volume ethanol is used is determined by the following formula 1 (Independent Administrative Institution Pharmaceuticals and Medical Devices Agency Document 038-1309.pdf) and formula 2 be able to.
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

<Other ingredients>
The said antiperspirant composition can contain other components in the range which does not impair the effect of this invention besides each component of said (A)-(D). The other components can be appropriately selected from those usually used in antiperspirant compositions, such as anionic polymer, cationic polymer, amphoteric polymer, nonionic polymer, polyhydric alcohol, cyclic Silicone, polyether modified silicone, silicone oil such as dimethylpolysiloxane and amino modified silicone, anionic surfactant, nonionic surfactant other than the above component (C), amphoteric surfactant, hydroxypropyl β-cyclodextrin, glycyrrhizin Anti-inflammatory agents such as dipotassium acid, chelating agents, bactericides, amino acids, various plant extracts, flavors, water such as purified water, and the like can be mentioned.

-Method for producing antiperspirant composition-
The antiperspirant composition is prepared, for example, by mixing the components (A) to (D), the other components, and purified water (containing the remaining amount so that the total amount of the antiperspirant composition is 100% by mass). Can be manufactured. There is no restriction | limiting in particular as an apparatus which produces the said antiperspirant composition, According to the objective, it can select suitably, For example, it was equipped with several stirring blades, such as a propeller, a turbine, and a disper which can be mixed with shear. A stirrer is mentioned. In addition, as said (A)-(D) component and said other component, in producing the said antiperspirant composition, you may use each independently, and the mixture containing 2 or more types of components is also used. You may use in the state.

-Container-
Examples of the container include a roll-on container, a trigger spray container, and a dispenser container. Among these, roll-on containers are preferable in terms of antiperspirant effect. 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. Furthermore, when the content of the ethanol is 50% by mass or more, even when the roll-on container is used, the skin can be used without stickiness. 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 Can be mentioned.
Examples of the trigger type spray container include trigger: trade name: “Z-305” (manufactured by Mitani Valve Co., Ltd.), polyethylene terephthalate bottle: trade name “F-1223” (manufactured by Yoshino Kogyo Co., Ltd.), and the like. It can be mentioned.
As said dispenser container, brand name: "Z-35-S01" (discharge amount: 0.045 mL, Mitani Valve Co., Ltd. make) etc. are mentioned, for example.

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

[Examples 1 to 33 and Comparative Examples 1 to 16]
Antiperspirant compositions having the compositions and contents shown in Tables 1 to 6 below were prepared by the following method. That is, after dissolving the component (A), the component (C) and the common component in the absolute ethanol of the component (D), the component (B) is added and uniformly dissolved to obtain an antiperspirant composition. Prepared. A container of the following specifications: 40 mL of the antiperspirant composition of Examples 1 to 33 and Comparative Examples 1 to 16 was filled.

-Container (Roll-on container used in Examples 1 to 33 and Comparative Examples 1 to 16)-
・ Bottle (Made by Yoshino Kogyo Co., Ltd.)
Material: HDPE natural, full capacity: approx. 56 mL, trunk diameter: approx. 33 mm, height: approx. 87 mm
・ Ring (manufactured by Yoshino Kogyo Co., Ltd.)
Material: LLDPE natural, outer diameter: about 26 mm, height: about 18 mm
・ Ball (manufactured by Yoshino Kogyo Co., Ltd.)
Material: PP white, Diameter: about 20mm

In addition, absolute ethanol was used for ethanol of (D) component. The absolute ethanol content of the component (D) is the total content of the absolute ethanol content of the (D) component and 95.3 vol% ethanol brought in from the common component converted by the following formula. It is. About the said content, the 2nd decimal place was rounded off and the 1st decimal place was described.
-Mass% of ethanol = 95.3 x 0.79422 / 0.81523
= 92.84
-Absolute ethanol content (mass%) = 95.3 vol% ethanol content (mass%) x 92.84 / 100

  About the produced antiperspirant compositions of Examples 1 to 33 and Comparative Examples 1 to 16, “antiperspirant effect”, “non-stickiness of skin during use”, “white to skin” "Remaining nothing" and "redispersion" were evaluated. The results are shown in Tables 1 to 6.

<Antiperspirant effect>
Ten expert panelists in their twenties to forties applied 0.5 g of each antiperspirant composition in the range of 2 cm × 2 cm in axilla and dried them. After resting in this state for 1 hour under high temperature conditions (38 ° C., 40% RH environment), the “antiperspirant effect” was evaluated based on the following evaluation criteria.

-Evaluation criteria-
◎: At least 8 out of 10 professional panelists answered “Antiperspirant” ○: Between 6 and 7 out of 10 professional panelists answered “Antiperspirant” △: Out of 10 professional panelists 3 or more and 5 or less responded that “it has antiperspirant effect” ×: 2 or less of 10 professional panelists answered that “it is antiperspirant”

<No stickiness of skin during use>
Ten professional panelists in their 20s to 40s applied 0.2 g of each antiperspirant composition in the range of 2 cm × 2 cm in the axilla, and immediately after the application until each antiperspirant composition was dried, Based on the following evaluation criteria, "the skin was not sticky at the time of use" was evaluated.

-Evaluation criteria-
:: 8 or more out of 10 specialized panelists answered that the skin was not sticky ○: 5 or more out of 10 specialized panelists and less than 7 answered that the skin was not tacky △: 3 or more out of 10 specialized panelists 4 Less than 1 person answered that there was no skin stickiness ×: 2 or less of 10 professional panelists answered that there was no skin stickiness

<No white residue on skin>
10 professional panelists in their 20s and 40s applied 0.2g of each antiperspirant composition to the inner part of the forearm, and after drying, evaluated "no white residue on skin" based on the following evaluation criteria did.

-Evaluation criteria-
◎: More than 8 out of 10 professional panelists responded that there is no white residue on the skin ○: 6 or more out of 10 professional panelists answered that there was no white residue on the skin △: Out of 10 specialized panelists 3 or more and 5 or less answered that there is no white residue on the skin ×: Less than 2 out of 10 specialized panelists say that there is no white residue on the skin

Redispersion
50 mL of each antiperspirant composition is placed in 10 100 mL containers (round bottom sedimentation tube, glass, manufactured by Tokyo Glass Instrument Co., Ltd.), and centrifuged at 3,000 rpm for 10 minutes to obtain powder in the antiperspirant composition. The components were allowed to settle and then allowed to stand at room temperature (20 ° C.) for 1 month. Using this as a measurement sample, one expert panelist repeatedly shakes the container with a swing width of 15 cm under the conditions of once per second until the powder component on the bottom surface of the container is completely dispersed (hereinafter referred to as “ Sometimes called "dispersion number"). It was visually judged by one expert panelist that the powder components were completely dispersed. An average value of the number of times of 10 dispersions was calculated, and “redispersibility” was evaluated based on the following evaluation criteria.

-Evaluation criteria-
:: The average value of the number of dispersions is less than 5 ○: The average value of the number of dispersions is 5 or more and less than 10 C: The average value of the number of dispersions is 10 or more and less than 20 ×: The average value of the number of dispersions is 20 or more

＊表５中比較例４の「再分散性」の評価結果「−」は、（Ｂ）成分のシリコーン樹脂粉体を含まないため、再分散性の評価ができなかったことを意味する。

* The evaluation result "-" of "redispersibility" of Comparative Example 4 in Table 5 means that the redispersibility could not be evaluated because the silicone resin powder of the component (B) was not included.

＊１：（ ）内の数字はエチレンオキシドの平均付加モル数を示す。 In addition, about the detail of the various component used by the said Example and the said comparative example, it shows in following Table 7.

* 1: The number in () shows the average added mole number of ethylene oxide.

  The antiperspirant composition of the present invention, even when containing 50% by mass or more of ethanol, has good non-stickiness of the skin and no white residue on the skin at the time of use, antiperspirant effect, and redispersion It is suitable for, for example, cosmetics, medicines, quasi-drugs and the like because it is excellent in quality.

Claims (8)

(A) 2% by mass to 20% by mass of a water-soluble aluminum compound,
(B) 0.2% by mass to 3% by mass of silicone resin powder;
(C) 0.1% by mass to 3% by mass of polyoxyethylene alkyl ether having an average added mole number of ethylene oxide of 2 to 8, and
(D) 50% by mass to 85% by mass of ethanol,
The mass ratio of the content (mass%) of the (A) water-soluble aluminum compound to the content (mass%) of the polyoxyethylene alkyl ether in which the average addition mole number of the (C) ethylene oxide is 2 to 8 (mass%) a / C) is, Ri 2 to 100 der,
The mass ratio of the content (mass%) of the (B) silicone resin powder to the content (mass%) of the polyoxyethylene alkyl ether having an average addition mole number of the ethylene oxide (C) of 2 to 8 (mass%) B / C) is, antiperspirant composition characterized 0.3-10 der Rukoto. ( D) The antiperspirant composition according to claim 1, wherein the ethanol content is 60% by mass to 80% by mass.   (A) Mass ratio of content (mass%) of water-soluble aluminum compound and (C) content (mass%) of polyoxyethylene alkyl ether having an average added mole number of ethylene oxide of 2 to 8 (A / The antiperspirant composition according to any one of claims 1 to 2, wherein C) is 5-30.   (B) Mass ratio of content (mass%) of silicone resin powder and (C) content (mass%) of polyoxyethylene alkyl ether having an average added mole number of ethylene oxide of 2 to 8 (B / The antiperspirant composition according to any one of claims 1 to 3, wherein C) is 0.5-2.   The antiperspirant composition according to any one of claims 1 to 4, wherein the content of the (A) water-soluble aluminum compound is 5% by mass to 15% by mass.   The antiperspirant composition according to any one of claims 1 to 5, wherein the water-soluble aluminum compound (A) is chlorhydroxyaluminum.   (C) A polyoxyethylene alkyl ether in which the average addition mole number of ethylene oxide is 2 to 8 is a polyoxyethylene stearyl ether in which an average addition mole number of ethylene oxide is 3 to 5, and an average addition mole number of ethylene oxide is 5 At least one selected from polyoxyethylene lauryl ether, polyoxyethylene isostearyl ether having an average addition mole number of ethylene oxide of 5 and polyoxyethylene oleyl ether having an average addition mole number of ethylene oxide of 5 The antiperspirant composition in any one of 1-6.   The antiperspirant composition according to any one of claims 1 to 7, which is packed in a roll-on container.