JPH111419A - Antiperspirant deodorant composition - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain the subject composition to be packed into a container capable of spraying the composition without using a propellant, causing no clogging, etc., by using powder particles having a length degree or a flatness degree and particle diameters of specific values, respectively and a settling velocity in a specific range. SOLUTION: This composition contains powder (organic powder, inorganic substance-based powder, organic substance-based powder, vegetable powder, polymer powder, silicone, etc.) having a length degree or flatness degree of 1-10 and particle diameters of 0.01-100 μm, has the settling velocity (u) obtained by the equation of powder particles: u=g(ρp-ρ)Dp<2> /18 μ [(u) is the particle velocity (m/s); (g) is the weight (9.8 m/s<2> ); ρp is the density of a particle (kg/m<3> ); ρis the density of a fluid; Dp is the diameter (m) of the particle; p is the viscosity of the fluid] in the range of 1.0×10<-15> to 5.0×10<-2> m/s, preferably 1.0×10<-9> to 5.0×10<-2> m/ s and is packed into a non-propellant container.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an antiperspirant deodorant composition which can be easily applied without impairing the feeling of use or usefulness of the powder and has excellent portability.

[0002]

2. Description of the Related Art Conventionally, powders have been used in cosmetics and pharmaceuticals as active ingredients or as a feeling imparting agent. In other words, products utilizing the good adsorptivity and feeling of use of powder include body powder such as batter powder and powder spray used as antiperspirant. An example of the former is a baby powder as described in JP-A-60-75425. This dosage form lacks portability because it is necessary to prepare a separate puff to apply the powder. Further, it is difficult and difficult to apply powder uniformly by puffing.

[0003] An example of the latter is disclosed in Japanese Patent Application Laid-Open No. 3-15732.
As described in No. 7, a container is filled with a powder aerosol composition. Although this powder spray is excellent for simple application, it requires a propellant in addition to the stock solution, so that the filling container tends to be large and it is difficult to make it compact. Of course, roll-on type and stick type antiperspirants have been made compact, but the roll-on type is inferior to the mist type in terms of compactness because it has a ball portion. Both the roll-on type and the stick type are applied by directly contacting the skin, while the mist type is a non-contact type, which is preferable in terms of cleanliness. However, since the mist type dispenser container is generally filled with the propellant together with the undiluted solution as described above, there is also a limitation in downsizing.

[0004] In order to solve such problems, it has been desired to use a dispenser container which sprays in a mist state without using a propellant. A container that sprays without using a propellant, by applying pressure from the outside to the inside,
A container that discharges the contents to the outside. By the way, the use as a cosmetic containing powder is conventionally known (JP-A-2-279621). If this powder-containing cosmetic is filled in the above-mentioned dispenser container and used for use, there arises a problem that the powder is clogged inside the dispenser. For this reason, there is still anxiety about the use of the powder-containing cosmetic in a dispenser container that sprays without using a propellant.

However, a dispenser container for a liquid containing powder is disclosed in Japanese Patent Application Laid-Open No. Hei 8-182945. The reciprocating motion of a piston interlocked with the pushing of a nozzle head sucks liquid into a cylinder and pressurizes the liquid to discharge a certain amount. A pump-type dispenser characterized by this is introduced. Also, JP-A-8-266962 discloses that
When liquid containing powder is discharged to the outside through a narrow passage,
A mist-type dispenser that can be ejected as a mist with a small particle size is introduced.

[0006]

However, the fact is that even with these dispensers, clogging of the container due to powder in the liquid and malfunctions near the piston portion are often caused. An object of the present invention is to provide an antiperspirant deodorant composition which is filled in a container which can be sprayed without using a propellant and which does not cause clogging or the like.

[0007]

According to the present invention, the length or flatness is 1 to 10 and the particle size is 0.01 to 100 μm.
m, and the sedimentation velocity u of the powder particles determined by the formula (1) is 1.0 × 10 ⁻¹⁵ m / s to 5.0 × 10
^{The present} invention provides an antiperspirant deodorant composition characterized by being filled in a non-propellant container (a container which can be sprayed without using a propellant), in the range of ^-2 m / s.

U = g (ρp−ρ) Dp ² / 18μ (1) (where, u: particle velocity (m / s) g: gravity (9.8 m / s ² ) ρp: particle density (kg) / M ³ ) ρ: Density of fluid (kg / m ³ ) Dp: Particle diameter (m) μ: Viscosity of fluid (kg / m · s)

[0008] The antiperspirant deodorant composition filled in the container of the present invention is mainly composed of powder and liquid, but does not contain a propellant. No clogging. The powder absorbs moisture and sebum on the body surface, and gives the body surface a smoothness as well as an antiperspirant effect and a deodorant effect.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION The antiperspirant deodorant composition of the present invention contains (i) a powder having a length or a degree of flatness of 1 to 10 and a particle size of 0.01 to 100 μm; The sedimentation velocity μ determined by the above equation (1) is 1.0 × 10 ⁻¹⁵ m /
s to 5.0 × 10 ⁻¹² m / s, (iii) it does not contain a propellant, and (iv) is filled in a non-propellant container.

The length or flatness 1 to 10 of the powder particles is as follows:
It is the ratio (L / S) of the length (L) of the longest part of the particle to the length (S) of the part perpendicular to it. As the ratio between the long and short or flatness increases, clogging is more likely to occur. The particle size of the powder particles is 0.01 to 100 μm.
If it is smaller than this, it is difficult to give a dry feeling to the body surface, and if it is larger than this, clogging tends to occur at the time of injection.

The equation (1) representing the sedimentation velocity u is derived as follows. Now, the resistance of a fluid acting on a spherical particle moving at a constant speed in a stationary fluid is generally expressed by the following equation. ^{Rg = CAp (ρu 2/2} ) = C (πDp 2/4) (ρu
^2/2) R: resistance (kg) C: resistance coefficient Ap: projected area of a particle (m ²⁾ ρ: Density of the fluid (kg / m ³⁾ u: particle velocity (m / s) Dp: particle diameter (M) g: gravity (9.8 m / s ² ) If the fluid is incompressible, the resistance coefficient is expressed by the following formula:
e number. Re = Dp · u · ρ / μ Re: Reynolds number μ: viscosity of fluid (kg / m · s) In addition, when a particle moves in the direction of gravity in a stationary fluid, it is expressed by the following equation of motion. You. ^{ρp (πDp 3/6) du} / dt = ρp (πDp 3/6) g-ρ (πDp 3/6) gC
^{(πDp 2/4) (ρu} 2/2) ρp: density of the particles (kg / m ³⁾ t: the rate at which the time (s) particles to a uniform motion, the acceleration is 0 (d
To become a u / dt = 0), 0 = ρp (πDp 3/6) g-ρ (πDp 3/6) gC (πDp 2/4) (ρu 2 /
2) and u = √ (4g (ρp−ρ) Dp / 3Cρ) is derived, and u indicates the sedimentation velocity. At this time, Re = Dp
If u · ρ / μ <2, the relationship of C = 24 / Re Rg = 3πμDp holds among other functions including the Reynolds number and the resistance coefficient, and substituting and into the resistance coefficient of the equation: Dp = √ (18 μu / g (ρp−ρ)) is derived. This is called the Stokes diameter. Thus, the sedimentation velocity is expressed by the following equation. u = g (ρp−ρ) Dp ² / 18μ (1)

Here, the density (ρp) of the powder particles is 0.9
^{× 10 3 ~11.0 × 10 3 kg} / m 3, the density of the fluid ([rho) is suitably ^{0.8 × 10 3 ~1.3 × 10 3} kg / m 3. The diameter (Dp) of the powder particles is 0.01 × 10 ^-6
To 100 × 10 ⁻⁶ m, preferably 0.01 × 1
It is 0 ^{-6 to} 20 × 10 ^-6 m. If the Dp value exceeds 100 μm, the feeling of use deteriorates, and if it is less than 20 μm, both the feeling of use and prevention of clogging are very good. The viscosity (μ) of the fluid is 1.0 × 10 ^{−3 to} 5.0 × 10 ⁻² kg / m.
S, preferably 1.0 × 10 ^{−3 to} 2.0 × 10 ⁻² kg
/ Ms. If it is less than 1.0 × 10 ⁻³ kg / m · s, uniform spraying cannot be performed and liquid dripping occurs, and 5.0 × 10 3
^{If it is} larger than ^-2 kg / m · s, the feeling of use is deteriorated and clogging is likely to occur. The ratio (% by weight) of the powder in the preferred antiperspirant deodorant composition is 0.0001 to 20% by weight.

Under these conditions, the sedimentation velocity (u) of the powder particles in the present invention is 1.0 × 10 ⁻¹⁵ m / s <
u <5.0 × 10 ⁻² m / s, preferably 2.0 × 10 ⁻⁹
m / s <u <5.0 × 10 ⁻² m / s. When the sedimentation speed of the particles is 5.0 × 10 ^-2 m / s or more, the dispersibility of the powder is poor and clogging occurs. 1.0 × 10 ^-15
When it is less than m / s, there arises a problem that the powder floats on the liquid surface or the powder adheres to the wall surface of the container.

The powder used in the present invention includes:
It does not cause clogging and is excellent in usability. Examples of such materials include organic powders such as polystyrene, polystyrene, nylon, and cellulose, and silica, magnesia composite silica, talc, montmorillonite, titanium oxide, and hydroxyapatite. , Inorganic powders such as metal oxides, organic powders, vegetable powders such as starch, polymer powders (such as dimethylpolysiloxane of 1 to 10,000 cs) and silicones (volatile silicone, decamethylcyclo Pentasiloxane, octamethylcyclotetrasiloxane) and the like.

Examples of the inorganic powder include magnesium silicate, silicic anhydride, kaolin, mica, titanium mica, aerosil, magnesium oxide, red iron oxide, carbon black, sericite, smectite, zeolite, aluminum, aluminum oxide, aluminum chlorohydride. Rate, zirconium oxide, calcium carbonate, magnesium carbonate, barium sulfate, phlogopite, synthetic phlogopite, iron hydroxide, aluminum oxide, calcium oxide, sericite, antimony oxide, zinc sulfide, cobalt titanate, lead titanate, silica Examples include aluminum silicate, aluminum magnesium silicate, barium silicate, calcium silicate, strontium silicate, and diatomaceous earth. Organic powders include polyamide, polyether, polyurethane, polyolefin, polyethylene terephthalate,
Examples include polymethyl methacrylate, synthetic pigments, and natural pigments. Examples of the vegetable powder include glycyrrhetinic acid and derivatives thereof (dipotassium glycyrrhetinate, monoammonium glycyrrhetinate, glyceryl glycyrrhetinate, stearyl glycyrrhetinate, β-glycyrrhetinic acid, and the like).

These have excellent effects of eliminating the stickiness of the skin due to sweat and eliminating the smell of sweat, and have an effect of imparting smoothness.

The liquids include methanol, ethanol, isopropyl alcohol, butanol, n-
Butane, isopentane, isoparaffin, water and the like are conceivable.

Other antiperspirant components as desired active ingredients include, for example, aluminum chloride, aluminum oxychloride, basic aluminum bromide, aluminum sulfate, chlorohydroxyaluminum, chlorohydroxyaluminum zirconium, zinc sulfate, phenolsulfonic acid Examples include simple salts having an astringent action, such as aluminum, phenolsulfonic acid, and basic zinc aluminum aluminum lactate, and glycol complexes and amino acid complexes containing these simple salts.

In the present invention, together with the above-mentioned components, if necessary, auxiliary additives commonly used in this type of powdered lotion, such as surfactants, alcohols, fungicides, clathrate compounds (cyclodextrin, etc.) ), Vitamins, aminos, anti-inflammatory agents (such as glycyrrhizic acid), coolness-imparting agents (menthols), crude drugs, and fragrances.

In this case, examples of the surfactant include sorbitan trioleate, polyoxyethylene monooleate, polyoxystyrene nonylphenyl ether, hydrogenated castor oil of ponoxyethylene, and tripolyoxyethylene alkyl ether phosphoric acid. . Examples of the disinfectant include benzalkonium chloride, isopropylmethylphenol, triclosan, trichlorocarbanilide, chlorhexidine hydrochloride, and bensethonium chloride.

The filling container used in the present invention is a dispenser container of a trigger type, a pump type or a mist type (including an inverted spray type) capable of spraying the contents without requiring a propellant. Dispenser containers themselves that can be sprayed without using such a propellant are known, for example, JP-A-8-131912,
Containers such as those described in JP-A-8-266962 and JP-A-60-24438 are exemplified. When the powder-filled liquid cosmetic (antiperspirant deodorant composition) that satisfies the above formula (1) is filled in this, clogging of the powder is prevented. In addition, since the container can be made small, it is convenient to carry.

[0022]

Next, the present invention will be described more specifically with reference to examples.

Examples 1 to 10 and Comparative Examples 1 to 3 Cosmetics having the composition shown in Table 1 were prepared and filled in containers A, B or C which can be sprayed without using a propellant. The container A is a trigger type sprayer (described in JP-A-8-131912), the container B is a mist type dispenser container (described in JP-A-8-266962), and the container C is an inverted sprayable mist type dispenser container (described in JP-A-8-266962). JP 6
0-24438).

The evaluation was performed as follows, and the results are shown in Table 1. (1) Evaluation method of smooth feeling Each sample was sprayed twice on the inner part of the forearm from a distance of 10 cm,
After drying, evaluation was made according to the following evaluation criteria. The evaluation was determined by a sensory five-level evaluation. 5: Very smooth feeling. 4: There is a feeling of smoothness. 3: There is some smooth feeling. 2: Slightly lacking in smooth feeling. 1: Lack of smooth feeling. The average score of 4 or more was evaluated as ◎, 3 or more and less than 4 as ○, 2 or more and less than 3 as Δ, and less than 2 as ×, and the smooth feeling was judged. (2) Evaluation method of clogging prevention effect Each sample was sprayed 10 times, and then stored in a constant temperature room at 50 ° C. for 24 hours. Thereafter, the weight of the sample was measured to confirm the spray properties. ◎: No loss of contents. No change in spray properties. ：: No loss of contents. In the first spray, abnormal spray properties are observed, but normal after the second spray. Δ: Content was slightly reduced. No change in spray properties,
Or there is change. ×: Content loss. Abnormal spray properties. (3) Uniform applicability Each sample is sprayed on paper once from a distance of 10 cm, and the spray pattern is used to make a determination. A: Sprayed in a mist state and uniformly sprayed on the surface. ：: Slightly mist-like (large droplets sprayed), but uniformly sprayed on the surface. Δ: Sprayed in a stream and sparsely sprayed. ×: Cannot be sprayed.

[0025]

[Table 1]

[0026]

According to the antiperspirant deodorant composition of the present invention, there is no clogging of a valve or button of a dispenser container which can be sprayed without using a propellant, and in addition, the container can be made compact. It is easy to carry.

Claims (1)

[Claims] A powder having a length or flatness or a flatness of 1 to 10 and a particle size of 0.01 to 100 μm, and the sedimentation velocity u of the powder particles determined by the formula (1) is 1.0 × 10 ^-15
m / s to 5.0 × 10 ^-2 m / s, wherein the antiperspirant deodorant composition is filled in a non-propellant container. U = g (ρp−ρ) Dp ² / 18μ (1) (where, u: particle velocity (m / s) g: gravity (9.8 m / s ² ) ρp: particle density (kg) / M ³ ) ρ: Density of fluid (kg / m ³ ) Dp: Particle diameter (m) μ: Viscosity of fluid (kg / m · s)