JP2006076996A - Deodorant spray preparation - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a deodorant spray preparation which leaves no white residues due to the constituent powder on the skin and provides a pleasant feeling upon use such as a silky feeling. <P>SOLUTION: The deodorant spray preparation comprises (A) an antiperspirant salt and/or an antimicrobial agent, (B) an unsaturated fatty acid, (C) an antioxidant, and (D) a propellant. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a deodorant spray formulation.

  Powder spray is widely used as a deodorant product that suppresses sweating and prevents stickiness and odor generation due to sweat. Powder sprays are required to have no white residue due to powder agglomeration during spraying or unpleasant skin feel such as stickiness, and various methods have been studied to improve these problems. It was.

For example, Patent Document 1 describes a liquid antiperspirant composition containing an antiperspirant substance such as aluminum hydroxychloride, an alcohol and a polyether-modified silicone. In this antiperspirant composition, polyether-modified silicone and alcohol are used to suppress the white residue of antiperspirant salt. Apart from the antiperspirant, a powder is added for the purpose of improving the skin feel such as dry feeling. When blended, a sufficient white residue suppressing effect cannot be obtained.
Patent Document 2 describes a powder aerosol composition in which a nonionic surfactant or silicone oil is blended in an inorganic powder such as talc, silicic anhydride, kaolin, aluminum hydroxychloride as a powder component. This powder aerosol composition suppresses the whitening state when sprayed, but has a strong oily feeling and does not provide a skin feel excellent in the dry feeling of the powder.

  Patent Document 3 describes an antiperspirant / deodorant containing spherical silicone rubber powder, and Patent Document 4 describes an aerosol composition containing a composite powder made of different organopolysiloxanes. ing. However, although these compositions all have a smooth use feeling, the white residue control is insufficient.

JP-A-5-229925 Japanese Patent Laid-Open No. 3-157327 JP-A-8-12545 JP 11-335254 A

  An object of the present invention is to provide a deodorant spray preparation that suppresses white residue of a powder component and is excellent in skin feel such as a dry feeling.

In the deodorant spray preparation containing an antiperspirant salt and / or a bactericidal agent, the present inventors have added a unsaturated fatty acid and an antioxidant, while having a dry skin feel with less skin stickiness. It has been found that later white residue can be suppressed.
That is, the present invention provides a deodorant spray preparation containing (A) an antiperspirant salt and / or a bactericidal agent, (B) an unsaturated fatty acid, (C) an antioxidant, and (D) a propellant.

  ADVANTAGE OF THE INVENTION According to this invention, the deodorant spray formulation which suppresses the white residue of a powder component and is excellent also in skin feels, such as a smooth feeling, can be provided.

In the deodorant spray preparation of the present invention (hereinafter sometimes referred to as the composition of the present invention), an antiperspirant salt and / or a bactericidal agent is used as the component (A). Examples of the antiperspirant salt include aluminum chlorohydrate, aluminum zirconium complex salt, aluminum chloride and the like. Examples of the bactericidal agent include triclosan, isopropylmethylphenol, benzoic acid, benzalkonium chloride, trichlorocarbanilide and the like. One of these antiperspirant salts and fungicides may be used alone, or two or more thereof may be used in combination, or antiperspirant salts and fungicides may be used in combination.
In the composition of the present invention, the antiperspirant salt is preferably 0.01 to 5% by mass, more preferably 0.05 to 3% by mass in the total amount of the composition containing the propellant, and sterilization. The agent is preferably blended in a proportion of preferably 0.005 to 0.2 mass%, more preferably 0.01 to 0.1 mass%.

In the composition of the present invention, an unsaturated fatty acid is used as the component (B). As the unsaturated fatty acid, those having 14 to 22 carbon atoms are preferable, and those having 14 to 18 carbon atoms are particularly preferable. Specific examples include myristoleic acid, palmitoleic acid, oleic acid, linoleic acid, and linolenic acid.
One kind of these unsaturated fatty acids may be contained in the composition of the present invention, or two or more kinds thereof may be contained. The content of the unsaturated fatty acid (B) in the composition is preferably 0.01 to 1% by mass, more preferably 0.02 to 0.5% by mass, and more preferably 0.02 to 0.5% by mass in the total amount of the composition including the propellant. Preferably it is 0.05-0.3 mass%. By setting the content to 0.01% by mass or more, a satisfactory white residue suppressing effect is exhibited. When it is 1% by mass or less, there is no problem in terms of fatty acid odor, and a good skin feel is obtained without the oily feeling becoming too strong.

In the composition of this invention, antioxidant is contained as (C) component in order to improve the sustainability of a deodorant effect. Examples of this antioxidant include dibutylhydroxytoluene (BHT), butylhydroxyanisole, vitamin E and its derivatives, catechin compounds, flavonoid compounds, polyphenol compounds, and the like. These antioxidants may be used individually by 1 type, and may be used in combination of 2 or more type.
The content of the antioxidant (C) in the composition of the present invention is preferably 0.0001 to 0.1 in the total amount of the composition containing the propellant from the viewpoint of the balance between the sustainability of the deodorant effect and the economic efficiency. It is selected in the range of mass%, more preferably 0.0005 to 0.03 mass%.

  The ratio (C) / (B) of the content of the component (C) and the component (B) is preferably 1/100 to 1/2, and more preferably 1/50 to 1/5. preferable. When (C) / (B) is 1/100 or more, the sustainability of the deodorant effect can be sufficiently improved, and is preferably 1/2 or less from the economical viewpoint.

In the present invention, when the composition containing these components (A), (B) and (C) is used as a deodorant spray formulation, the white residue of the powder including the component (A) is small.
Here, in order to obtain a deodorant spray preparation, a propellant is used as the component (D). Examples of the propellant include CFC gas such as CFC 134a and CFC 113, hydrocarbon gas such as propane, isobutane and isopentane, liquefied gas such as dimethyl ether, carbon dioxide gas, and nitrogen gas. The propellant content in the composition is preferably about 60 to 99% by mass in the total composition.

In the composition of the present invention, a liquid oil agent can be contained at room temperature within a range not impairing the effects of the present invention. Examples of liquid oils at room temperature include silicone oils such as dimethyl silicone, decamethylcyclopentasiloxane, methylphenyl silicone, and methylcyclopolysiloxane; modified silicone oils such as polyoxyethylene / methylpolysiloxane copolymer; myristin And fatty acid esters such as myristyl acid, isopropyl myristate, isopropyl palmitate, and neopentyl glycol dicaprate.
One kind of these oil agents may be contained, or two or more kinds thereof may be contained. Moreover, content of the oil agent in the said composition becomes like this. Preferably it is 0.1-25 mass% in a composition whole quantity containing a propellant, More preferably, it is 0.3-15 mass%.

In the composition of this invention, inorganic or organic powder other than (A) component can be contained as needed. Specifically, for example, talc, sericite, mica, kaolin, bengara, clay, bentonite, silicic anhydride, synthetic silica beads and other inorganic powders, a polysiloxane compound having a radical polymerizable group at one end as a dispersant As a polymer resin obtained by performing dispersion polymerization of a vinyl monomer in a solvent (Japanese Patent Laid-Open No. 11-181003), a silicone resin such as a crosslinked silicone / network silicone block copolymer, a methylsiloxane network polymer ( Examples of commercially available products include KMP-590 (manufactured by Shin-Etsu Chemical Co., Ltd.), Tospearl 145, Tospearl 2000B (manufactured by Toshiba Silicone Co., Ltd.), Trefill (manufactured by Toray Dow Corning Silicone Co., Ltd.) and the like. ), Nylon resin (SP-500 (manufactured by Toray Industries, Inc.), etc.), polystyrene Resin (Fine Pearl (manufactured by Sumitomo Chemical Co., Ltd.)), Techpolymer SB (manufactured by Sekisui Plastics Co., Ltd.), fine powder SGP (manufactured by Soken Chemical Co., Ltd.), polyethylene resin (flow beads (Sumitomo Seiki) Chemical Methylate) resin (Matsumoto Microsphere M (Matsumoto Yushi Seiyaku Co., Ltd.), Techpolymer MB (Sekisui Plastics Co., Ltd.), Fine Powder MP (Soken Chemical) Etc.)), and organic powders such as divinylbenzene resin, polyurethane resin, benzoguanamine resin, melamine resin, phenol resin, and fluorine resin can be used.
One kind of these powders may be contained, or two or more kinds thereof may be contained. The content of the powder in the composition is preferably 0.1 to 25% by mass, more preferably 0.3 to 15% by mass in the total amount of the composition containing (D) the propellant.
In addition, in the composition of the present invention, if necessary, polyhydric alcohols such as glycerin, 1,3-butylene glycol, 1,4-butylene glycol, pigments, dyes, fragrances, cooling agents, anti-inflammatory agents, A wetting agent, a stabilizer, etc. can be suitably mix | blended within the range which does not impair the effect of this invention.

Examples 1-6 and Comparative Examples 1-3
A deodorant spray formulation having the composition shown in Table 1 was prepared by the following production method. The composition is shown in mass%.
Components other than the propellant (D) shown in Table 1 were uniformly mixed, and the resulting mixture was packed in a spray container, and then filled with LPG to prepare a deodorant spray formulation.

(Evaluation methods)
An appropriate amount of spray was uniformly applied to the upper arms of 10 professional panelists, and sensory evaluation was performed according to the following criteria for the continuity of the smooth feeling and the remaining white. The score of each panel was tabulated and ranked according to the average evaluation score. The evaluation results are shown in Table 1 together with the composition.

<Evaluation criteria>
(1) Persistence of smooth feeling (Evaluation of smooth feel after 1 hour of application)
5: Slightly smooth 4: Slightly smooth 3: Neither can be said 2: Not very smooth 1: Not completely free <Average rating score>
A: 4.5 to 5.0
○: 3.5 to 4.4
○ △: 2.5 to 3.4
Δ: 1.5 to 2.4
X: 1.0-1.4

(2) White residue (Evaluation of apparent whiteness immediately after application)
4: Does not become white 3: Does not become so white 2: Slightly white 1: Becomes white <Average evaluation score>
A: 3.5 to 4.0
○: 2.5 to 3.4
Δ: 1.5 to 2.4
X: 1.0-1.4

  From these results, the deodorant spray preparation of the present invention containing an antiperspirant salt and / or a bactericidal agent, an unsaturated fatty acid, an antioxidant, and a propellant is excellent in both the sustainability of the smooth feeling and the white residue suppressing effect. It was a thing.

  The deodorant spray preparation of the present invention suppresses white residue due to powder aggregation during injection, suppresses sweating without giving an unpleasant skin feel such as stickiness, and is excellent in a smooth feeling.

Claims (6)

  A deodorant spray formulation comprising (A) an antiperspirant salt and / or a bactericidal agent, (B) an unsaturated fatty acid, (C) an antioxidant and (D) a propellant.   The deodorant spray preparation according to claim 1, wherein the (B) unsaturated fatty acid is one or more selected from myristoleic acid, palmitoleic acid, oleic acid, linoleic acid and linolenic acid.   The deodorant spray preparation according to claim 1 or 2, wherein the content of the component (B) is 0.01 to 1% by mass relative to the total amount of the composition containing the propellant.   The deodorant spray preparation according to any one of claims 1 to 3, wherein the content of the component (C) is 0.0001 to 0.1 mass% with respect to the total amount of the composition containing the propellant.   The deodorant spray preparation according to any one of claims 1 to 4, wherein the content ratio (C) / (B) of the component (C) and the component (B) is 1/100 to 1/2. Furthermore, the deodorant spray formulation in any one of Claims 1-5 containing powder other than (A) component.