JP2009161474A - Antiperspiration spray composition - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an antiperspiration spray composition which has good redispersibility of an antiperspiration spray stock solution and is easy to fill when aluminum hydroxychloride of an antiperspiration component is used and does not become white when used. <P>SOLUTION: The antiperspiration spray composition is obtained by mixing an antiperspiration spray stock solution (A) composed of 10-40 wt.% aluminum hydroxychloride of an antiperspiration component, 0.1-10 wt.% oleophilic nonionic surface active agent, and 55-90 wt.% oil with an aerosol propellant (B) composed of at least one component selected from the group consisting of a liquefied petroleum gas and dimethyl ether at a weight ratio of (A) to (B) of 3:97 to 15:85. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to an antiperspirant spray composition, and more particularly to an antiperspirant spray composition in which an antiperspirant spray stock solution is stable for a long period of time and has good redispersibility.

Japanese Patent Publication No. 5-79642 JP 2004-292446 A Japanese Patent No. 3785664

  Antiperspirants that suppress sweating and prevent the occurrence of stickiness and odor due to sweat are widely known, and among them, many aerosol-type antiperspirant sprays containing powder have been invented. Aluminum hydroxychloride, which is an antiperspirant component, is a powder, and Patent Documents 1 and 2 have been proposed so that it does not remain white after application.

  However, since the antiperspirant spray stock solution containing a large amount of aluminum hydroxychloride is difficult to keep the state of the stock solution uniform, it is necessary to separate the powder component and the oil agent component and to fill them separately.

  Moreover, although the composition for stabilizing an antiperspirant spray is proposed like patent document 3, since it contains ethanol, when the antiperspirant spray stock solution is stored for a long period of time, aluminum hydroxychloride accumulates in the lower part, and it is clay-like. As a result, there is a problem that redispersion becomes difficult.

  The present invention has been made in view of the above-mentioned problems of the prior art, and its main purpose is to use the antiperspirant component aluminum hydroxychloride and to redisperse the antiperspirant spray stock solution even when stored for a long period of time. It is to provide an antiperspirant spray composition that is good, easy to fill and does not turn white when used.

  The present inventor has intensively studied to achieve the above object. As a result, an antiperspirant component aluminum hydroxychloride, a lipophilic nonionic surfactant, and an oil agent are contained in a specific ratio to obtain an antiperspirant spray stock solution having good redispersibility even during long-term storage. According to the antiperspirant spray composition in which at least one component selected from the group consisting of dimethyl ether is used as a propellant and mixed at a specific ratio, it is found that the antiperspirant spray composition does not become white after application to the skin, and the present invention is completed here. It came to do.

That is, the present invention provides the following antiperspirant spray composition.
1. (A) Antiperspirant component is an antiperspirant spray stock solution comprising 10 to 40% by weight of aluminum hydroxychloride, 0.1 to 10% by weight of a lipophilic nonionic surfactant, and 55 to 90% by weight of an oil.
(B) an aerosol propellant comprising at least one component selected from the group consisting of liquefied petroleum gas and dimethyl ether;
(A): (B) = An antiperspirant spray composition formed by mixing at a weight ratio of 3:97 to 15:85.
2. 2. The antiperspirant spray composition as described in 1 above, wherein the lipophilic nonionic surfactant is a sorbitan fatty acid ester.
3. 3. The antiperspirant spray composition according to 1 or 2 above, wherein 5 to 40% by weight of isopentane is contained in the aerosol propellant.

  The antiperspirant spray composition of the present invention comprises (A) an antiperspirant component aluminum hydroxychloride 10 to 40% by weight, a lipophilic nonionic surfactant 0.1 to 10% by weight, and an oil agent 55 to 90% by weight. A spray stock solution and an aerosol propellant composed of at least one component selected from the group consisting of (B) liquefied petroleum gas and dimethyl ether are mixed at a weight ratio of (A) :( B) = 3: 97 to 15:85. It is made. Hereinafter, the antiperspirant spray composition of the present invention will be specifically described.

  As the antiperspirant component, aluminum hydroxychloride is essential, and aluminum zirconium complex salt, aluminum chloride, and the like can be used.

  The blending ratio of the antiperspirant component in the antiperspirant spray stock solution is about 10 to 40% by weight, preferably about 15 to 35% by weight. If the amount of aluminum hydroxychloride is insufficient, it becomes difficult to obtain an antiperspirant effect. Also, if the amount of the antiperspirant component is too large, the skin becomes white when the product is applied, such being undesirable.

  The lipophilic nonionic surfactant mainly serves to improve the redispersibility even when the antiperspirant component aluminum hydroxychloride in the antiperspirant spray stock solution is stored in the oil for a long period of time.

  Any lipophilic nonionic surfactant can be used without particular limitation as long as it is soluble in the oil. Specific examples of lipophilic nonionic surfactants include sorbitan monolaurate, sorbitan monopalmitate, sorbitan monostearate, sorbitan sesquistearate, sorbitan tristearate, sorbitan sesquiisostearate, sorbitan monooleate, sesquioleic acid Sorbitan fatty acid esters such as sorbitan and sorbitan trioleate, glyceryl myristate, glyceryl monostearate, glyceryl monoisostearate, glyceryl monooleate, glyceryl fatty acid esters such as pentastearic acid decaglyceryl, pentahydroxystearic acid decaglyceryl, penta Decaglyceryl isostearate, decaglyceryl pentaoleate, diglyceryl monostearate, diglyceryl monooleate Le dioleate diglyceryl, a polyglycerol fatty acid esters such as polyglyceryl isostearate can be exemplified.

  Among these, liquids at room temperature are easy to handle, and sorbitan fatty acid esters such as sorbitan monolaurate, sorbitan sesquiisostearate, sorbitan monooleate, sorbitan sesquioleate, and sorbitan trioleate are preferable.

  The blending ratio of the lipophilic nonionic surfactant in the antiperspirant spray stock solution may be about 0.1 to 10% by weight, preferably about 0.2 to 5% by weight. If the blending amount of the lipophilic nonionic surfactant is less than 0.1% by weight, the redispersibility of the aluminum hydroxychloride deteriorates, which is not preferable. On the other hand, when the blending amount of the lipophilic nonionic surfactant exceeds 10% by weight, the stickiness is large when used, which is not preferable as an antiperspirant spray.

  The oil agent is not particularly defined as long as it is a liquid oil agent at room temperature used in cosmetics. However, an oil agent that has good wettability to powder and solubility in a propellant and has little stickiness when applied to the skin is preferable.

  Although not particularly limited, hydrocarbon (normal paraffin, isoparaffin, etc.), ester oil (isopropyl myristate, cetyl octanoate, isopropyl palmitate, myristyl myristate, isocetyl stearate, cetyl lactate, etc.), silicone oil (dimethyl silicone, cyclic silicone) ), Oils and fats (olive oil, rapeseed oil, castor oil, camellia oil, linseed oil, jojoba oil, etc.), and these may be used alone or in combination.

  The oil agent is suitably blended within the range of 55 to 90% by weight, more preferably 65 to 75% by weight.

  As the propellant, known propellants can be used, and preferably carbon dioxide, nitrogen, nitrous oxide, liquefied petroleum gas (LPG), dimethyl ether (DME), chlorofluorocarbon, compressed air, etc. are used. be able to.

  The proportion of the propellant is preferably 85 to 97% by weight, more preferably 88 to 95% by weight, based on the antiperspirant spray stock solution. If the propellant is less than 85% by weight, the antiperspirant spray stock solution will cause a lot of stickiness.

  Moreover, isopentane may be contained in these. The function of isopentane is to give a cool feeling when applied to the skin, and to lower the pressure of the antiperspirant composition, thereby suppressing powder scattering.

  The blending ratio of isopentane is preferably 5 to 40% by weight, more preferably 10 to 20% by weight, based on the propellant.

  To the antiperspirant spray composition of the present invention, in addition to the above essential components, antioxidants, bactericides, fragrances and the like can be added within a range not impairing the effects of the present invention.

  The antiperspirant spray composition of the present invention comprises (A) the antiperspirant component aluminum hydroxychloride 10 to 40% by weight, the lipophilic nonionic surfactant 0.1 to 10% by weight, and the oil agent 90% by weight. An aerosol propellant comprising at least one component selected from the group consisting of (B) liquefied petroleum gas and dimethyl ether, as a spray stock solution, at a weight ratio of (A) :( B) = 3: 97 to 15:85 Usually, these components can be obtained by enclosing these components in a known aerosol container according to a conventional method.

  The antiperspirant spray stock solution of the present invention has good redispersibility even when stored for a long time, facilitates filling, and the antiperspirant spray composition does not turn white when used.

  Hereinafter, the present invention will be described in more detail with reference to examples.

Examples and Comparative Examples

Examples 1-3 and Comparative Examples 1-3
An antiperspirant spray stock solution and an antiperspirant spray composition having the stock solution composition shown in Table 1 below were prepared by the following production method, and (i) redispersibility of the stock solution, (b) feeling of use of the composition (white) The state), and (c) the feeling of use (stickiness) of the composition was evaluated. The evaluation results are also shown in Table 1. “%” In Examples and Comparative Examples represents “% by weight”.

(Production method)
Components 1 to 6 were mixed and stirred for 20 minutes with a homomixer to prepare an antiperspirant spray stock solution. Furthermore, the antiperspirant spray stock solution was filled into an aerosol container, the aerosol valve was crimped, and the propellant was filled to obtain an antiperspirant spray composition.

(B) Redispersibility of stock solution (evaluation method)
The antiperspirant spray stock solutions obtained in Examples 1 to 3 and Comparative Examples 1 to 3 were placed in a 140 ml glass bottle. The mixture was allowed to stand at 25 ° C. for 48 hours, stirred with a propeller for 20 minutes, and visually evaluated according to the following criteria.
○: Uniform with no powder aggregation Δ: Slight powder aggregation x: Most of the powder is not aggregated and re-dispersed

(B) Feel of use of the composition (state of whiteness)
(Evaluation methods)
Using the antiperspirant spray compositions obtained in Examples 1 to 3 and Comparative Examples 1 to 3 using monitors of 10 men and 20 women, the following conditions regarding the state when sprayed on the skin were as follows: Evaluation was made according to the criteria.
○: The number of people who answered that there is no white is 25 or more. Δ: The number of people who answered that there is no white is 20 or more and 24 or less. ×: The number of people who answered that there is no white is 19 or less. thing

(C) Feel of use of the composition (stickiness)
(Evaluation methods)
Using the antiperspirant spray compositions obtained in Examples 1 to 3 and Comparative Examples 1 to 3 using monitors of 10 men and 20 women, the following conditions regarding the state when sprayed on the skin were as follows: Evaluation was made according to the criteria.
○: The number of people who answered that there was a sticky feeling was 5 or less △: The number of people who answered that there was a sticky feeling was 6 or more and 10 or less ×: The number of people who answered that there was a sticky feeling was 11 or more thing

The invention's effect

  In the antiperspirant spray composition of the present invention, the redispersibility of the antiperspirant spray stock solution is good even in long-term storage, and the conventional stock solution is divided into two components, a powder component and a liquid component, and filled separately. No equipment was used, and one agent could be filled even during long-term storage. Further, the obtained antiperspirant spray composition has no whiteness or stickiness and is good as an antiperspirant spray.

  In addition, it was confirmed that the compound containing isopentane was good because the pressure of the product was lowered compared with the compound not containing compound, and the momentum was reduced.

Claims (3)

(A) Antiperspirant component is an antiperspirant spray stock solution comprising 10 to 40% by weight of aluminum hydroxychloride, 0.1 to 10% by weight of a lipophilic nonionic surfactant, and 55 to 90% by weight of an oil.
(B) an aerosol propellant comprising at least one component selected from the group consisting of liquefied petroleum gas and dimethyl ether;
(A): (B) = An antiperspirant spray composition formed by mixing at a weight ratio of 3:97 to 15:85.   The antiperspirant spray composition according to claim 1, wherein the lipophilic nonionic surfactant is a sorbitan fatty acid ester.   The antiperspirant spray composition according to claim 1 or 2, wherein (B) 5 to 40% by weight of isopentane is contained in the aerosol propellant.