JP2007314488A - Aerosol type antiperspirant - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an aerosol type antiperspirant having a high antiperspiration and deodorizing effect, also without clogging its valve and obtaining practically sufficient usability. <P>SOLUTION: This aerosol type antiperspirant obtained by filling a composition obtained by dissolving antiperspirant components in an aerosol container equipped with a housing having an introducing port for gas state propellant (VT: vapor tap hole) and an introducing port for liquid state propellant and stock solution (UT: under tap hole), and a valve having a stem installed with at least one or two stem holes is provided by having 0.3 to 1.0 mm range inner diameter of the gas state propellant-introducing port (VT: vapor tap hole). <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to an aerosol type antiperspirant that has a high antiperspirant and deodorizing effect and provides stable usability.

In general, a composition obtained by solubilizing an antiperspirant component, when applied to the skin, water or ethanol contained in the composition volatilizes to form a film on the skin, resulting in high antiperspirant, Deodorizing effect is obtained.
Moreover, high usability can be obtained by making the composition formed by solubilizing such an antiperspirant component into an aerosol preparation by filling an aerosol container and spraying it toward the skin. When injecting such an aerosol preparation toward the skin, such as under the armpit, a method is used in which both the upright injection in the state where the container is upright and the inverted injection in the state of being inverted are used properly. May be.

  However, the antiperspirant component as described above forms a film on the surface of the skin and exhibits an antiperspirant effect. Therefore, when an aerosol container is filled with such a composition, There is a problem that clogging is likely to occur due to the deposition of the composition in a housing hole, a stem hole, or the like provided in.

As an antiperspirant as described above, for example, as described in Patent Document 1, there is an antiperspirant containing chlorohydroxyaluminum (ACH) as an antiperspirant component.
Moreover, there exist some which were described in patent documents 2-7 as an aerosol formulation with which the composition filled the aerosol container, for example.
However, when an aerosol container as described in Patent Documents 2 to 7 is filled with a composition solubilized with chlorohydroxyaluminum (ACH) as described in Patent Document 1, the composition is dried. In this case, a film is formed, so that there is a problem that clogging of the housing hole and the stem hole is likely to occur.

Patent Document 8 describes a composition comprising an aerosol type antiperspirant composition containing an antiperspirant component, water, and a propellant, and further containing polyoxyethylene polyoxypropylene alkyl ether phosphate. ing.
The aerosol type antiperspirant composition described in Patent Document 8 contains the polyoxyethylene polyoxypropylene alkyl ether phosphoric acid, so that the solubilizing power is improved, and the antiperspirant component or the like is not precipitated as a starch. It can be stably sprayed onto the skin.

However, since the aerosol antiperspirant composition described in Patent Document 8 is also a composition in which the ACH is solubilized, as described above, it has a property of forming a film when dried on the skin surface. For this reason, a film is formed in the housing hole and stem hole of the valve provided in the aerosol container, which causes a problem of clogging.
JP 2000-229826 A JP 2002-309241 A JP-A-6-317541 JP 11-349933 A Japanese Patent Laid-Open No. 11-228943 Japanese Patent Application Laid-Open No. 11-71264 JP-A-10-57849 JP 2002-3356 A

As a method for solving the problem of the clogging of the aerosol preparation as described above, a method of enlarging the hole diameter of the housing hole, the stem hole or the like can be considered.
However, if the hole diameter of the housing hole, stem hole, etc. is simply increased, the injection balance between the upright injection and the inverted injection is lost, and a difference occurs in the injection amount between the upright and inverted positions. It may be difficult to stably obtain sufficient usability.

  The present invention has been made in view of the above problems, and is an aerosol type antiperspirant that has high antiperspirant and deodorizing effects, and that can stably obtain practically sufficient usability without clogging the valve. The purpose is to provide.

  The present inventor has intensively studied to improve the above problems, and relates to a valve provided in an aerosol container filled with a composition solubilized with an antiperspirant component, and relates to a propellant inlet (VT: vapor) in a gaseous state. It was found that clogging due to the film of the antiperspirant component can be prevented by defining the inner diameter of the tap hole in an appropriate range.

In the present invention, a composition in which an antiperspirant component is solubilized includes a propellant inlet (VT: vapor tap hole) in a gaseous state, and an inlet (UT: under tap hole) of a propellant and stock solution in a liquid state. ), And an aerosol type antiperspirant filled in an aerosol container provided with a valve having a stem provided with at least one or two stem holes. The inner diameter of the inlet (VT: vapor tap hole) is in the range of 0.3 to 1.0 mm.
In the aerosol antiperspirant of the present invention, the inner diameter of the vapor tap hole is preferably in the range of 0.5 to 0.8 mm, and is preferably in the range of 0.5 to 0.7 mm. Is more preferable.
The aerosol antiperspirant of the present invention may be configured such that the antiperspirant component is chlorohydroxyaluminum (ACH) and / or chlorohydroxyaluminum / propylene glycol.

According to the aerosol type antiperspirant of the present invention, by regulating the inner diameter of the vapor tap hole (VT) within the above range, it is possible to prevent clogging of the valve provided in the aerosol container, and to stabilize Can be used in the injected state.
Accordingly, it is possible to realize an aerosol type antiperspirant that has high antiperspirant and deodorizing effects and that can stably obtain practically sufficient usability without clogging the valve.

Hereinafter, embodiments of the aerosol type antiperspirant according to the present invention will be described with reference to FIGS. 1 (a), 1 (b), 2 (a), and (b) as appropriate.
In the aerosol type antiperspirant 1 of the present embodiment, a composition 10 in which an antiperspirant component is solubilized includes a vapor tap hole (VT) 61 that is an inlet for a gaseous propellant and a liquid propellant. And an aerosol container 2 provided with a valve 3 having a housing 6 having an undertap hole (UT) 62 which is an inlet for the stock solution and a stem 5 provided with at least one or two stem holes 51. And is roughly structured.
In the present embodiment, the inner diameter of the vapor tap hole 61 is in the range of 0.3 to 1.0 mm.

[Configuration of aerosol container]
FIGS. 1A and 1B and FIGS. 2A and 2B are views illustrating the basic structure of the aerosol container 2 of the present embodiment. As shown in FIG. 1A, the aerosol container 2 of the present embodiment is provided with a valve 3 on an upper part of a bottomed cylindrical container body 21. Moreover, although detailed illustration is abbreviate | omitted, the aerosol container 2 of this embodiment is formed in the substantially cylindrical shape.

The container main body 21 is a container that contains therein the composition 10 in which the antiperspirant component is solubilized, and is formed in an elongated cylindrical shape in the illustrated example.
The container body 21 also functions as a grip portion when the user uses the aerosol antiperspirant 1, and thus has a substantially cylindrical shape that is easy to hold and operate as shown in the illustrated example. However, it is not limited to this shape, and can be appropriately determined in consideration of usability.

As described above, the valve 3 is provided in the upper part of the aerosol container 2 and includes the valve head 4, the stem 5, the stem gasket 5 a, the housing 6, and the dip tube 7. Further, as shown in FIG. 2, the valve 3 is provided with a cup-shaped mountain cup 32 for attaching the valve 3 to the upper part of the container body 21 (upward in FIG. 1A). The form valve 3 is an injection valve for injecting the contents 10 filled in the aerosol container 2 to the outside in the aerosol antiperspirant 1.

The valve head 4 is attached to the upper part of the stem 5 which will be described in detail later, and a throat 41 is provided on the side surface from which the composition 10 contained in the aerosol container 2 is sprayed outward as a propellant. ing. The valve head 4 functions as an operating portion of the valve 3 by the user performing an operation of pushing down the valve head 4 as shown in FIG. 2B from the state shown in FIG. .
Moreover, the valve head 4 is attached so that it may protrude from the upper part of the container main body 21, as shown to Fig.1 (a).

The stem 5 is formed in a pipe shape, and is pushed down together when the valve head 4 is operated by being pushed down, and sends the composition 10 as a propellant into the valve head 4 (mouth 41) by an injection operation described later. is there.
The stem 5 has a flow path 52 through which the propellant passes, and a stem hole 51 is formed so as to communicate with the flow path 52 from the outer peripheral surface of the stem 5, and FIGS. The stem hole 51 is formed in one place in the example shown in FIG.

The number of stem holes 51 may be at least one or two.
The number of the stem holes 51 may be one. However, when the number of the two stem holes 51 is two, for example, the composition 10 in which the antiperspirant component is solubilized in one of the stem holes 51 becomes dry, the composition 10 It is more preferable because it can pass through the stem hole 51 and can prevent clogging to the maximum extent.

The inner diameter of the stem hole 51 is preferably in the range of 0.3 to 0.6 mm.
If the inner diameter of the stem hole 51 is within this range, clogging can be suppressed even when the composition 10 is dried in the stem hole 51.
If the inner diameter of the stem hole 51 is less than 0.3 mm, clogging may easily occur when the composition 10 is dried.
If the inner diameter of the stem hole 51 exceeds 0.6 mm, the spray amount of the aerosol-type antiperspirant 1 may be excessive.

The stem gasket 5a is provided so as to surround the periphery of the stem 5, as shown in FIGS. 2 (a) and 2 (b).
The stem gasket 5a is disposed so as to close the stem hole 51 on the outer peripheral surface of the stem 5 at the standby position shown in FIG. 2A. However, as shown in FIG. Accordingly, when the stem 5 is lowered, the stem 5 is displaced away from the stem hole 51 in the vertical direction (the vertical direction in FIGS. 2A and 2B), so that the flow path 52 inside the stem 5 and the housing 6 to be described later are obtained. Is configured to communicate with the interior of the.

  As shown in FIGS. 2A and 2B, the housing 6 is attached so as to be fitted into the mountain cup 32, and is connected to the lower portion of the stem 5, and includes a vapor tap hole (VT) 61 and an undertap. And a hole (UT) 62. The housing 6 includes a spring 63 for raising the valve head 4 and the stem 5 upward (upward in FIG. 2A) when the valve head 4 and the stem 5 are pushed down. It has been.

In the illustrated example, the vapor tap hole (VT) 61 is provided so as to open in the gap between the housing 6 and the wall surface of the mountain cup 32, and the under tap hole (UT) 62 opens at the lower end of the housing 6. Is provided.
When the aerosol type antiperspirant 1 of the present embodiment is used in the upright injection as shown in FIG. 1A, the vapor tap hole 61 functions as an inlet for the propellant in the gaseous state, and the under tap. The hole 62 functions as an inlet for the propellant and stock solution in a liquid state.
On the other hand, when the aerosol type antiperspirant 1 is used in an inverted jet as shown in FIG. 1B, the vapor tap hole 61 can function as an inlet for the propellant in a liquid state. The under tap hole 62 can function as an inlet for the propellant in the gaseous state.

The inner diameter of the vapor tap hole 61 is preferably in the range of 0.3 to 1.0 mm.
If the inner diameter of the vapor tap hole 61 is in this range, even if the composition 10 in which the antiperspirant component is solubilized in the vapor tap hole 61 is in a dry state, it does not cause clogging and the like. The injection amount of the mold antiperspirant 1 can be set to an appropriate amount for obtaining the antiperspirant action.
If the inner diameter of the vapor tap hole 61 is less than 0.3 mm, the composition 10 is likely to be clogged when dried, and the spray amount of the composition when the aerosol type antiperspirant 1 is used in an inverted spray is small. There is a risk that it will decrease.
If the inner diameter of the vapor tap hole 61 exceeds 1.0 mm, the spray amount of the composition may be excessive when the aerosol type antiperspirant 1 is used in an inverted spray.
The inner diameter of the vapor tap hole 61 is more preferably in the range of 0.5 to 0.8 mm, and still more preferably in the range of 0.5 to 0.7 mm.

Moreover, it is preferable that the inner diameter of the under tap hole 62 is in the range of 0.5 to 1.6 mm.
If the inner diameter of the undertap hole 62 is within this range, even if the composition 10 in which the antiperspirant component is solubilized in the undertap hole 62 is in a dry state, clogging or the like does not occur. The balance of the injection amount of the antiperspirant 1 at the time of erecting injection and at the time of inverted injection is optimized.
When the inner diameter of the undertap hole 62 is less than 0.5 mm, the composition 10 is likely to be clogged when dried, and the spray amount of the composition when the aerosol type antiperspirant 1 is used in an upright spray. May decrease.
If the inner diameter of the undertap hole 62 exceeds 1.6 mm, when the aerosol type antiperspirant 1 is used in the upright injection, there is a possibility that the injection amount of the composition becomes too large.
The inner diameter of the undertap hole 62 is more preferably in the range of 0.7 to 1.5 mm, and further preferably in the range of 0.8 to 1.3 mm.

In the aerosol type antiperspirant according to the present invention, the ratio of the inner diameter (VT / UT) between the vapor tap hole (VT) 61 and the under tap hole (UT) is in the range of 0.3 to 1. Preferably it is.
If the VT / UT is within this range, the balance of the injection amount between the case where the aerosol type antiperspirant is used in the upright injection and the case where it is used in the inverted injection is optimized.
If the VT / UT is less than 0.3, the inner diameter of the vapor tap hole 61 is too small compared to the inner diameter of the undertap hole 62, so that there is a possibility that the injection amount when used in the inverted injection becomes too small.
If the VT / UT exceeds 1, the inner diameter of the vapor tap hole 61 becomes larger than the inner diameter of the undertap hole 62, so that there is a possibility that the injection amount when used in the inverted injection becomes too large.
The VT / UT is more preferably in the range of 0.3 to 0.8.

The dip tube 7 is a tube attached to the lower part of the housing 6 (downward direction in FIGS. 2A and 2B) so as to communicate with the under tap hole 62. It arrange | positions so that a liquid phase part may be connected.
When the dip tube 7 is used in an upright state by adopting a configuration in which the end 71 on the opposite side to the housing 6 is arranged near the bottom of the container body 21 as in the example shown in FIG. In addition, the composition accommodated in the aerosol container 2 can be efficiently guided to the under tap hole 62.

  The aerosol-type antiperspirant according to the present invention has the above-described configuration, and in particular, as the antiperspirant component, a composition in which chlorohydroxyaluminum (ACH) that easily forms a film when dried is solubilized is used as the composition 10 Even when the composition 10 is filled in the aerosol container 2 and used, the occurrence of clogging or the like can be effectively suppressed.

[Injection form of aerosol type antiperspirant (aerosol container)]
Hereinafter, the operation of the valve 3 when the aerosol type antiperspirant 1 is used will be described by taking as an example a form in which the aerosol type antiperspirant 1 is used in the upright injection as shown in FIG.

  First, when the user pushes down the valve head 4 with a finger or the like, as shown in FIG. 2 (b), the stem 5 is lowered and the stem hole 51 is separated from the stem gasket 5a. Communicates with the interior of Further, the inside of the housing 6 and the inside of the aerosol container 2 are communicated with each other by a vapor tap hole 61 and an under tap hole 62 formed in the housing 6.

At this time, the inside of the housing 6 communicates with the gas phase portion in the aerosol container 2 through the vapor tap hole 61, and the inside of the housing 6 and the inside of the aerosol container 2 through the dip tube 7 through the under tap hole 62. The liquid phase part is communicated.
As a result, the liquid or gaseous composition introduced into the housing 6 through the vapor tap hole 61 and the under tap hole 62 is jetted to the outside through the stem 41 through the stem 5.
When the user lifts his / her finger from the valve head 4, the stem 5 and the valve head 4 are pushed up by the spring 63 provided in the housing 6, and the valve 3 is in a standby state as shown in FIG. Return to.

  In addition, even in the form in which the aerosol type antiperspirant 1 is used in the inverted injection as shown in FIG. 1B, the composition can be injected by the same operation as in the case of using the upright injection. In this case, the liquid composition is introduced into the housing 6 from the vapor tap hole 61. Further, as shown in the example shown in FIG. 1B, when the aerosol type antiperspirant 1 is inverted and the periphery of the end portion 71 of the dip tube 7 is in the state of the gas phase, the under tap hole From 62, a gaseous composition is introduced.

[Composition with solubilized antiperspirant component]
The antiperspirant component used in the aerosol antiperspirant composition according to the present invention is not particularly limited, and examples thereof include antiperspirant substances such as aluminum compounds, zirconium compounds, and zinc compounds. Specifically, aluminum hydroxychloride (ACH), aluminum chloride, aluminum sulfate, allantoinchlorohydroxyaluminum, aluminum hydroxide, aluminum lactate, aluminum magnesium silicate, aluminum oxide, anhydrous aluminum silicate, bromohydroxyaluminum, phenolsulfonic acid Aluminum, chlorohydroxy aluminum zirconium, etc. are mentioned. Moreover, the salt of the said aluminum compound and polyethyleneglycol, propylene glycol, or glycine is mentioned. Of these, chlorohydroxyaluminum and / or chlorohydroxyaluminum / propylene glycol are preferable.
In addition, examples of the antiperspirant component include chlorohydroxyzirconium, zinc sulfate, and zinc phenolsulfonate.
The antiperspirant component can be used singly or in combination of two or more of the above.
Moreover, even if it is the same kind of antiperspirant component, in a commercial item, there are various grades, and one grade may be used independently and several grades may be used together.

The blending amount of the antiperspirant component is preferably in the range of 0.05 to 50% by weight, more preferably 1 in the stock solution (in the aerosol type antiperspirant composition, excluding the propellant, the same shall apply hereinafter). The range is from 0 to 25% by weight.
If it is less than 0.05% by weight, it is difficult to exert a sufficient antiperspirant effect. If it is 50% by weight or more, stable blending is difficult, whitening on the skin is likely to occur during application, and the feeling of use is also reduced.

Since the antiperspirant component is a salt that is easily soluble in a polar solvent, the antiperspirant effect is improved by adding an appropriate polar solvent and solubilizing the preparation. In this case, examples of the polar solvent include water, lower alcohols, polyols and the like. Among these, use of water, ethanol, and isopropyl alcohol is preferable because of its good feeling of use and high safety.
The blending amount of these polar solvents is preferably 0.1% by weight or more. If it is less than 0.1% by weight, it becomes difficult to dissolve the antiperspirant active ingredient sufficiently and stably blend it.

  The propellant used in the present embodiment is not particularly limited, and examples thereof include propane, n-butane, isobutane, isopentane, dimethyl ether, and LPG. Among these, LPG, dimethyl ether, and isopentane are preferably used. Moreover, one of these propellants can be used alone or in combination of two or more. Carbon dioxide, nitrogen gas, etc. can also be used from the environmental and safety aspects.

The aerosol type antiperspirant of the present embodiment is basically configured by containing a composition containing an antiperspirant component, a polar solvent, and a propellant in an aerosol container. As long as the effects of the present invention are not impaired, one of the other components used in the cosmetic can be used alone or in combination of two or more.
For example, as other components, deodorant component, bactericidal component, antibacterial agent, refreshing agent, inclusion compound, powder component, water-soluble component, liquid fat, solid fat, wax, hydrocarbon oil, higher fatty acid, lower alcohol, Higher alcohol, polyhydric alcohol, ester oil, silicone oil, anionic surfactant, cationic surfactant, amphoteric surfactant, nonionic surfactant, moisturizer, water-soluble polymer, thickener, film agent, ultraviolet ray Absorber, infrared blocking agent, sequestering agent, sugar, sugar alcohol, amino acid, organic amine, polymer emulsion, pH adjuster, skin nutrient, vitamin, herbal medicine, antioxidant, antioxidant aid, anti-inflammatory agent , Fragrances and the like, but are not limited thereto.

  As described above, according to the aerosol antiperspirant 1 of the present embodiment, the antiperspirant component is dried in the vapor tap hole 61 by defining the inner diameter of the vapor tap hole (VT) 61 within the above range. Even in this case, clogging can be prevented.

Further, in the aerosol type antiperspirant of this embodiment, if the inner diameter of the undertap hole (UT) 62 is further defined within the above-described range, even if the antiperspirant component is dried in the undertap hole 62. It is possible to prevent clogging.
When the aerosol container 2 of the present embodiment is filled with a composition in which ACH is solubilized as an antiperspirant component to form an aerosol type antiperspirant, it is particularly effective in terms of preventing valve clogging.

Further, in the aerosol antiperspirant 1 of the present embodiment, the ratio (VT / UT) between the inner diameter of the vapor tap hole (VT) 61 and the inner diameter of the under tap hole (UT) 62 is further defined within the above-mentioned range. For example, the balance of the injection amount at the time of erect injection and at the time of inverted injection is further improved, and it can be used in a stable injection state in any use form.
Accordingly, it is possible to realize an aerosol type antiperspirant that has high antiperspirant and deodorizing effects and that can stably obtain practically sufficient usability without clogging the valve.

  Examples for demonstrating the aerosol type antiperspirant of the present invention will be described below, but the present invention is not limited to these examples.

[Creation of aerosol type antiperspirant]
First, a composition having a component composition as shown in Table 1 below was synthesized as a composition in which the antiperspirant component was solubilized. In addition, in Table 1 below, as the fragrance composition, those arbitrarily selected from the compositions of fragrances A to E disclosed in JP-A-2003-73249 (see Tables 23 to 35) were used, respectively. .
As an aerosol container, the inner diameter of the vapor tap hole (VT), the inner diameter of the under tap hole (UT), the ratio of the inner diameter of the vapor tap hole (VT) to the inner diameter of the under tap hole (UT) (VT / UT), stem An aerosol container in which the number of holes and the inner diameter were values shown in Table 2 below was produced (see also FIGS. 1A and 1B and FIGS. 2A and 2B).
And the said aerosol container was filled with the said composition, the aerosol type antiperspirant of Test Examples 1-12 was produced, and it evaluated by the method demonstrated below.

[Evaluation methods]
<Evaluation of injection state (usability in upright injection and inverted injection)>
Using the aerosol type antiperspirant of Test Examples 1 to 12 above, the inner part of the forearm (under the armpit) in each of the upright injection (see FIG. 1 (a)) and the inverted injection (see FIG. 1 (b)). On the other hand, the sprayed state was evaluated by spraying for 2 seconds from a distance of 10 cm from the skin.
The number of users (panels) was n = 20 (persons).

Then, the evaluation of the injection state was determined according to the following four-stage criteria in each of the upright injection and the inverted injection.
(1) A: Out of 20 people, 15 to 20 people answered that they were sprayed in a well-balanced manner.
(2) ○: Among the 20 people, 10 to 14 people answered that they were sprayed in a well-balanced manner.
(3) Δ: Among 20 people, 5 to 9 people answered that they were sprayed in a well-balanced manner.
(4) x: Out of 20 people, 4 or less people answered that they were sprayed in a well-balanced manner.

<Evaluation of clogging prevention>
The aerosol type antiperspirant of Test Examples 1 to 12 is stored in an inverted state at an angle of 180 ° with respect to the upright state at an atmospheric temperature of 45 ° C, and sprayed at a rate of once / week. (In the above inverted state, the valve head was half-pressed and sprayed for 2 seconds), and this storage and spraying cycle was performed continuously for 4 weeks.
In addition, the number of samples was set to n = 20 (book) in each of the above Test Examples 1-12.

Then, the evaluation of clogging prevention was determined by the following three-stage criteria.
(1) ○: No clogging occurred in one of the 20 pieces.
(2) Δ: Clogging occurred in 1 to 5 of 20.
(3) x: Clogging occurred in 6 or more of 20 pieces.

<Evaluation of antiperspirant action (effect of suppressing sweat)>
Using the aerosol type antiperspirants of the above Test Examples 1 to 9, the number of users (panels) was n = 20 (persons), and the antiperspirant action (feeling of suppressing sweat) was evaluated.
First, each user was kept at rest for 20 minutes in an environment of 30 ° C. and 80% RH to acclimatize the body to the environment. Then, in the same environment, the aerosol type antiperspirant of each Example and Comparative Example was sprayed for 2 seconds from a distance of 10 cm from the skin to the inner part of the forearm (under the heel).

And the evaluation of the effect which suppresses the sweat 1 hour after injection was determined on the basis of the following four levels.
(1) A: 15 to 20 out of 20 people answered that they feel antiperspirant effect.
(2) ○: Out of 20, 10 to 14 people answered that they feel antiperspirant effect.
(3) Δ: Among the 20 people, 5 to 9 people answered that they feel the antiperspirant effect.
(4) X: Out of 20, 4 or less answered that they feel the antiperspirant effect.

  Table 1 shows the component composition of the composition used in each test example, and Table 2 shows a list of dimensional conditions and evaluation results of the aerosol containers of each test example.

[Evaluation results]
As shown in Table 2, the aerosol types of Test Examples 1 to 5 were filled with a composition in which the antiperspirant component was solubilized in an aerosol container in which the inner diameter of the vapor tap hole (VT) was the size defined in the present invention. The antiperspirant was evaluated as ◎, ◯, or △ in any of the jetting state, and a high evaluation result was obtained on average. In addition, the aerosol type antiperspirants of Test Examples 1 to 5 are all evaluated as o for prevention of clogging, and the evaluation of antiperspirant action is evaluated as either ◎ or o, and high evaluation results are obtained. Obtained.

  In the aerosol type antiperspirant of Test Example 5 having a large VT / UT ratio of 1.250, a good evaluation result was obtained on average as described above. It is slightly lower than the evaluation of Examples 1 to 4. This is considered because the inner diameter of the under tap hole is smaller than the inner diameter of the vapor tap hole.

In contrast to the aerosol type antiperspirants of Test Examples 1 to 5, the aerosol type antiperspirant of Test Example 6 is not provided with a vapor tap hole (inner diameter: 0.0 mm). Since it was inferior, evaluation of the injection state became x.
In addition, although the inner diameter of the vapor tap hole is within the range specified in the present invention, the aerosol type antiperspirant of Test Example 7 having a low VT / UT ratio of 0.20 is used to evaluate the injection state and Evaluation for prevention of clogging was x.
In addition, although the inner diameter of the vapor tap hole is within the range defined by the present invention, the under-tap hole is not provided (inner diameter: 0.0 mm). Since the injection at the point was difficult, the evaluation of the injection state was x.
In addition, although the inner diameter of the vapor tap hole is within the range specified in the present invention, the aerosol type antiperspirant of Test Example 9 having a small inner diameter of the stem hole of 0.2 mm has an evaluation of x for preventing clogging. became.

In addition, the aerosol type antiperspirant of Test Example 10 in which the inner diameter of the vapor tap hole is 1.2 mm and exceeds the upper limit defined in the present invention has an excessive injection amount in the inverted state, and the evaluation of the injection state Became x.
Further, the aerosol type antiperspirant of Test Example 11 in which the inner diameter of the vapor tap hole is 0.2 mm, which is lower than the lower limit specified in the present invention, has a small injection amount in the inverted state, and the evaluation of the injection state is × In addition, the evaluation of clogging was x.
The inner diameter of the vapor tap hole is within the range defined by the present invention, but the inner diameter of the under tap hole is as large as 1.7 mm and the ratio of VT / UT is as low as 0.294. With the antiperspirant, the injection amount when used in the inverted injection was small, and the evaluation of the injection state was x.

  The aerosol type antiperspirants of Test Examples 6 to 9 and Test Example 11 are gradually clogged by performing a continuous test for 4 consecutive weeks in the evaluation of clogging prevention. In particular, in Test Examples 7 and 9, the number of samples causing clogging increased.

  From the above results, it is clear that the aerosol type antiperspirant of the present invention has high antiperspirant and deodorizing effects, and can stably obtain practically sufficient usability without clogging the valve. It was.

It is the schematic explaining an example of the aerosol type | mold antiperspirant which concerns on this invention, (a) State of erect injection, (b) It is a figure which shows the state of inverted injection. It is the schematic explaining an example of the aerosol type | mold antiperspirant which concerns on this invention, (a) At the time of standby, (b) It is a fragmentary sectional view which shows the state of the valve | bulb at the time of injection operation.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Aerosol type antiperspirant, 2 ... Aerosol container, 3 ... Valve, 5 ... Stem, 51 ... Stem hole, 6 ... Housing, 61 ... Vapor tap hole (VT), 62 ... Under tap hole (UT), 10 …Composition

Claims (4)

The composition in which the antiperspirant component is solubilized has a gas-state propellant inlet (VT: vapor tap hole), and a liquid-state propellant and stock solution inlet (UT: under-tap hole). An aerosol antiperspirant filled in an aerosol container provided with a valve having a housing and a stem provided with at least one or two stem holes,
An aerosol-type antiperspirant, wherein an inner diameter of the gaseous propellant inlet (VT: vapor tap hole) is in the range of 0.3 to 1.0 mm.   An aerosol type antiperspirant, characterized in that the gas propellant inlet (VT: vapor tap hole) has an inner diameter in the range of 0.5 to 0.8 mm.   An aerosol type antiperspirant, characterized in that an inner diameter of the gaseous propellant inlet (VT: vapor tap hole) is in the range of 0.5 to 0.7 mm. The aerosol type antiperspirant according to any one of claims 1 to 3, wherein the antiperspirant component is chlorohydroxyaluminum (ACH) and / or chlorohydroxyaluminum / propylene glycol.

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