JPH09124817A - Foam - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a foam, comprising inorganic porous fine particles and a synthetic polymer or a natural polymer, capable of using the synthetic polymer or natural polymer which has not conventionally been used due to a strong smell, and useful for a makeup puff, etc. SOLUTION: This foam is obtained by mixing (A) a synthetic polymer or a natural polymer with (B) inorganic porous fine particles and then blowing a foaming agent or a gas thereinto and expanding the resultant mixture. The component (B) is preferably a vegetable extract, concretely at least either of a mugwort or an aloe, or a medicine 3, concretely at least either one repellent supported thereon and preferably obtained by an interfacial reactional method.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a foam, and more particularly to a foam containing inorganic porous fine particles, or inorganic porous fine particles carrying a plant extract or a drug.

[0002]

2. Description of the Related Art Conventionally, a foam such as a sponge has not been made to contain a porous material such as an inorganic porous fine particle, which is similar to a foam, but a foam made of only a synthetic polymer or a natural polymer. In order to contain a plant extract or a drug therefor, a powdery or granular product was mixed with the raw material of the foamed product and foamed. Further, in order to contain the plant extract or the drug in the foam, the fiber covering the foam was kneaded with the porous substance carrying the plant extract or the drug, and the fiber was covered with the foam.

[0003]

However, the conventional technique has a problem. That is, when kneading into a foam, it is difficult to use a liquid one. For example, when a liquid is kneaded, the material of the foam is dissolved or eluted, so that the foam is kneaded into the foam over a long period of time. Could not be included. Further, since the powder extract or the granular form is used, the content of the active ingredient of the plant extract is smaller than that in the liquid state, and a large amount must be contained in order to obtain a certain effect, resulting in a cost. When latex or urethane resin is used as an ordinary polymer, it gives an unpleasant sensation due to the peculiar odor of the polymer, and is not suitable for puffs used on the skin or the like. Further, since such a conventional foam body loses its shape or easily inhales secretory substances such as skin, microorganisms easily proliferate, which requires frequent washing, which is troublesome. In addition, when kneading into fibers, it is necessary to use those treated around the sponge, which is costly and when the fibers disintegrate, the effect of the plant extract or drug from the disintegrated part I couldn't get it.

In view of the above problems, the present invention intends to provide a foam which can contain inorganic porous fine particles or can contain a liquid such as a plant extract or a drug.

[0005]

The objects of the present invention can be solved by the following foams. That is, it is a foam comprising inorganic porous fine particles and a synthetic polymer or a natural polymer. Such a foam is obtained by mixing inorganic porous fine particles with a synthetic polymer or a natural polymer and foaming it by chemical foaming or mechanical foaming. Alternatively, a synthetic polymer or natural polymer liquid may be mixed with inorganic porous fine particles, and a foaming agent or gas may be blown into the liquid to form a foam. Then, when the inorganic porous fine particles supporting at least one of the plant extract and the drug are used, a foam is obtained in which the effect of the plant extract or the drug is obtained. As such a plant extract, at least one of mugwort and aloe can be used. Further, a repellent can be used as the drug. Further, the inorganic porous fine particles obtained by an interfacial reaction method can also be used.

[0006]

BEST MODE FOR CARRYING OUT THE INVENTION The foamed material in the present invention is a porous material formed of a synthetic polymer or a natural polymer. And the thing with elasticity can be used especially. Examples of the synthetic polymer include latex, nylon, polyurethane, polyester, polyacryl, and other polymers. Examples of natural polymers include polysaccharides such as cellulose and cellulose derivatives, and proteins such as silk and casein.

Further, as the plant extract, essential oil or the like can be used. As a method for obtaining the plant extract, steam distillation method, compression method, fat adsorption method,
Examples include solvent extraction method and liquefied gas extraction method. Then, the plant extract is contained in a sponge or the like to obtain a foam having various effects. Examples thereof include aloe extract, mugwort extract, rice bran extract and the like. The agents used in the present invention include fragrances, antibacterial agents,
Examples thereof include salts and repellents, and particularly preferably repellents can be used. As the fragrance, it is harmless to humans and has fragrance.
There are synthetic fragrances. The natural flavors include plant flavors and animal flavors, which can be appropriately used depending on the application. Specific examples of the fragrance include aloe, peppermint oil, menthol, lemon oil and the like. Further, the antibacterial agent suppresses the growth of bacteria and fungi, and specific examples thereof include hinokitiol, hiba oil, mugwort extract, chitosan and the like. Further, as a salt, a salt containing NaCl, a salt obtained from natural seawater by the salt-field method, or an industrially produced salt by an ion exchange method can be used. And
When it is supported on the inorganic porous fine particles, it is 0.5 to 50.
It is desirable to use μm. Further, as repellents, microorganisms and mosquitoes, sanitary pests such as flies, and those that repel sanitary animals, and specific examples thereof are the above-mentioned antibacterial agents and antibiotics against microorganisms, For sanitary pests and sanitary animals, fragrances such as peppermint oil and eucalyptus oil can be used.

As the inorganic porous fine particles for carrying the plant extract or the drug used in the present invention, those having an inorganic porous property such as silica (silicic anhydride), calcium silicate, zeolite and the like can be used. Further, the shape of the inorganic porous fine particles used in the present invention can be any shape, for example, a substantially spherical shape, a substantially elliptical shape, a substantially polygonal shape, an irregular shape, or the like can be used. In particular
The inorganic porous fine particles described in JP-A-55454 can be preferably used. Examples of inorganic compounds forming the inorganic porous fine particles include carbonates, silicates, phosphates, sulfates, metal oxides, metal hydroxides, other metal silicates, and other metal carbonates of alkaline earth metals. Salts and the like can be used.

Specific examples of the alkaline earth metal carbonates include calcium carbonate, barium carbonate and magnesium carbonate, and examples of the alkaline earth metal silicates include calcium silicate, barium silicate and magnesium silicate. Examples of alkaline earth metal phosphates include calcium phosphate, barium phosphate, magnesium phosphate, and the like, and alkaline earth metal sulfates include calcium sulfate, barium sulfate, magnesium sulfate, and the like.

Further, metal oxides include silica, titanium oxide, iron oxide, cobalt oxide, zinc oxide, nickel oxide, manganese oxide and aluminum oxide, and metal hydroxides include iron hydroxide, nickel hydroxide and hydroxide. Aluminum, calcium hydroxide, chromium hydroxide and the like can be mentioned, respectively.

Other metal silicates include zinc silicate, aluminum silicate, magnesium silicate and the like, and other metal carbonates include zinc carbonate, aluminum carbonate, copper carbonate, magnesium carbonate and the like.

The inorganic porous fine particles are produced, for example, by a known interfacial reaction method. In this interfacial reaction method, a water-in-oil type emulsion (emulsion) is prepared from an inorganic compound aqueous solution using an organic solvent and a surfactant, and the emulsion is mixed with another aqueous solution to cause a precipitation reaction at a water droplet interface. After forming an inorganic shell, by-products and surfactants are removed to obtain hollow or solid inorganic porous fine particles. Specifically, inorganic porous fine particles that have already been commercialized (trade name: Gottball, manufactured by Suzuki Yushi Kogyo Co., Ltd.) can be used.

That is, when silica is used as the inorganic compound, as an example, a water glass solution is first emulsified with a liquid paraffin solution of a mixture of sorbitan monostearate and polyoxyethylene sorbitan monooleate to prepare a water-in-oil emulsion. Is adjusted and further added to an ammonium sulfate solution to cause a reaction, and the mixture is allowed to stand. Then, by filtering, washing and drying, hollow inorganic fine particles whose wall substance is silicic acid anhydride can be obtained.

As the inorganic porous fine particles, the particle size is 0.1 to 300 μm, the wall thickness is 0.05 to 150 μm, the pore size is 2 nm to 2 μm, and the oil absorption is 30 to 200 ml / 1.
One having a specific surface area of 200 to 800 m ² / g can be used.

A schematic cross-sectional structure of the inorganic porous fine particles produced in this way is shown in FIG. 1. In the example shown in the figure, in the hollow portion 2 of the inorganic porous fine particles 1 whose wall substance is silicic acid anhydride, The drug 3 is carried, and the plant extract or the drug gradually evaporates from the innumerable holes 4 present on the wall surface, and various effects of the drug 3 can be maintained for a long time. You can do it. In addition, as shown in FIG. 2, the voids 5 of the solid inorganic porous fine particles 1 are formed.
The drug 3 can also be carried on the.

As a method for supporting the plant extract or the drug on the inorganic porous fine particles 1, the inorganic porous fine particles 1 can be encapsulated by using the device shown in FIG.
That is, specifically, the liquid medicine 3 is encapsulated in the inorganic porous fine particles 1 in the voids 5 of the inorganic porous fine particles 1,
Inorganic porous fine particles 1 supporting the were prepared. And
The apparatus used for this is one in which a vacuum chamber 8 provided with an exhaust valve 6 and a leak valve 7 and a tank 9 containing a chemical 3 are connected via an introduction valve 10, and the inorganic material in the vacuum chamber 8 is By depressurizing the porous fine particles 1, the drug 3 under normal pressure is introduced into the hollow portion 2 by utilizing the pressure difference.

That is, the inorganic porous fine particles 1 are set in the vacuum chamber 8, the exhaust valve 6 is opened while the leak valve 7 and the introduction valve 10 are closed, and the inside of the vacuum chamber 8 is adjusted to 10 to 10 ^-3 torr. Decompress. Next, the exhaust valve 6 is closed, the exhaust in the vacuum chamber 8 is completed, and the introduction valve 10 is opened. At this time, since the inside of the tank 9 containing the medicine 3 is at atmospheric pressure, the medicine 3 is introduced into the vacuum chamber 8 due to the pressure difference. Since the hollow portion 2 of the inorganic porous fine particles 1 has already been depressurized by exhausting the inside of the vacuum chamber 8, the drug 3 introduced into the vacuum chamber 8
Penetrates into the hollow portion 2 inside the inorganic porous fine particles 1. Subsequently, the leak valve 7 is opened to return the vacuum chamber 8 to the atmospheric pressure, and then the excess drug 3 is separated by filtration or the like, whereby the inorganic porous fine particles 1 containing the drug 3 can be obtained.
Further, in addition to the method described above, it can be supported on the inorganic porous fine particles, as a method of immersing the inorganic porous fine particles in a liquid containing a plant extract or a drug, a plant extract or the like inside the inorganic porous fine particles. To carry a drug.

The amount of the inorganic porous fine particles carrying a plant extract or a drug supported on this foam is 0.
It is desirable to set it to 01 to 20%, preferably 0.01 to 5%. When it is less than 0.01%, the effect of the plant extract or the drug does not appear on the surface of the foam, and when it is more than 20%, it is difficult to mix with the foam, so the above range is preferable.

The amount of the plant extract or drug loaded on the inorganic porous fine particles is 1 to 80%, particularly preferably 33 to 40%, of the loaded inorganic porous fine particles.
Is desirable. That is, if it is less than 1%, the effects of the plant extract and the drug cannot be exhibited, and 80
If it is more than 0.1%, it leaks out from the inorganic porous fine particles, so it is desirable to set it in the above range.

In order to produce a foam, a mixture of inorganic porous fine particles and a synthetic polymer or a natural polymer is mixed with a foaming agent and heated to cause a chemical reaction, or A foam can be obtained by mixing gas or the like and mechanically foaming.

[0021]

【Example】

(Example 1) As Example 1, first, 2 g of inorganic porous fine particles containing 33% of an extract of sagebrush was prepared. Then, 2 g of the inorganic porous fine particles (trade name: Godball F-16C, manufactured by Suzuki Yushi Kogyo Co., Ltd.) and 1 g of hinokitiol which is an antibacterial agent were mixed with 100 g of natural rubber, and further 70 × 70 × 8 mm. Put it in a mold of the size shown in Fig.
A puff for powder foundation having pores 12 shown in was prepared.

(Example 2) As Example 2, 3 g of inorganic porous fine particles (trade name: Godball E-16C, manufactured by Suzuki Yushi Kogyo Co., Ltd.) containing 33% of the extract of Kawamuramugi by the above-mentioned method. It was made. And 18
The urethane resin was dissolved at 0 ° C. for 10 minutes, further cooled at room temperature, mixed with 3 g of the inorganic porous fine particles and 2 g of salt, and further put in a mold having a size of 70 × 70 × 8 mm to give CFC gas. Blowing it to make it foam, the hole 1 shown in FIG.
A puff for powder foundation having 2 was prepared.

(Comparative Example 1) As Comparative Example 1, Example 1 was used.
The same operation as in Example 1 was performed using only the natural rubber latex of No. 1 to produce the same puff for powder foundation.

Comparative Example 2 As Comparative Example 2, Example 2 was used.
The same operation as in Example 2 was performed using only the urethane resin of Example 1 to prepare a similar puff for powder foundation.

(Comparative Example 3) As Comparative Example 3, a conventional commercially available powder foundation puff was used.

(Evaluation of Odor of Examples 1, 2 and Comparative Examples 1 and 2) The odor of the puff itself was evaluated in Example 1 and Comparative Example 1, and in Example 2 and Comparative Example 2. That is, 20 panelists smelled and evaluated whether there was a smell of latex of natural rubber or urethane resin. As a result, Example 1 and Example 2 had less odor than Comparative Example 1 and Comparative Example 2 and could be used. However, Comparative Example was a natural rubber latex or The smell of urethane resin was strong, and everyone gave a bad rating.

(Evaluation when using the packs of Examples 1 and 2 and Comparative Example 3) The panel was evaluated by 50 panelists who actually used it. as a result,
In each of Example 1 and Example 2, all the packs were evaluated for good elongation, but Comparative Example 3 was poor for pack elongation.

(Evaluation of Makeup Loss of Makeup of Examples 1 and 2 and Comparative Example 3) 50 panelists actually used the makeup and evaluated whether the makeup of the makeup is lost. As a result, in both Example 1 and Example 2, in Example 1, 50
Forty-five of the people, and 43 of the people in Example 2, each had a good evaluation that the makeup was not likely to lose its shape. On the other hand, in Comparative Example 3, only 12 people did not lose their shape, and the evaluation was bad.

(Evaluation of Puff Shape Deformation in Examples 1 and 2 and Comparative Example 3) The puff shape deformation of Examples 1 and 2 and Comparative Example 3 was evaluated. That is, it was actually used, and the number of times the shape collapsed was measured. The results are shown in Table 1.

[0030]

[Table 1]

As a result, it was found that the embodiment was much less likely to lose its shape.

(Evaluation of the number of times of use before washing of Examples 1 and 2 and Comparative Example 3) The number of times of use before washing of Examples 1 and 2 and Comparative Example 3 was evaluated. As for the evaluation method, one panelist used it, and the number of times of use of each of the examples and comparative examples before washing was measured. The results are shown in Table 2.

[0033]

[Table 2]

As a result, in Example 1 and Example 2, compared with Comparative Example 3, the number of times required for washing was large, while in Comparative Example 3, it was small and time-consuming.

[0035]

EFFECT OF THE INVENTION According to the foam of the present invention, a natural polymer or a synthetic polymer which cannot be used due to its strong odor can be used. In addition, any plant extract or drug can be included in the foam, which is a conventional liquid,
It is not possible to carry it, or it is possible to carry a material that dissolves the polymer constituting the foam. Further, it becomes possible to gradually release the plant extract or the drug supported on the inorganic porous fine particles, and the efficacy of the plant extract or the drug can be maintained for a long period of time. Moreover, when used in a pack, the elongation was good. Further makeup did not cause the shape loss.
Furthermore, the foam of the present invention was good without smelling of natural polymers or synthetic polymers. Further, since it is not necessary to wash the clothes frequently, it is possible to produce a cosmetic puff that does not require much labor.

[Brief description of the drawings]

FIG. 1 is a cross-sectional explanatory view showing an example of hollow inorganic porous fine particles carrying a drug of the present invention.

FIG. 2 is a cross-sectional explanatory view showing an example of solid inorganic porous fine particles carrying a drug of the present invention.

FIG. 3 is an explanatory view showing an example of a method for injecting a drug into the inorganic porous fine particles of the present invention.

FIG. 4 is an explanatory view of the puff for powder foundation shown in Example 1.

[Explanation of symbols]

 1. Inorganic porous fine particles 2. Hollow part 3. Drug 4. Voids 5. Void 6. Exhaust valve 7. 7. Leak valve Vacuum chamber 9. Tank 10. Introduction valve 11. Puff for powder foundation 12. Vacancy

Continuation of the front page (51) Int.Cl. ⁶ Identification code Office reference number FI Technical display area A61K 35/78 A61K 35/78 V C08L 101: 00

Claims (6)

[Claims] 1. A foam comprising inorganic porous fine particles and a synthetic polymer or a natural polymer. 2. A foam obtained by mixing a synthetic polymer or a natural polymer with inorganic porous fine particles and blowing a blowing agent or a gas to foam the mixture. 3. The foam according to claim 1, wherein the inorganic porous fine particles carry at least one of a plant extract and a drug. 4. The foam according to claim 3, wherein the plant extract is at least one of mugwort and aloe. 5. The foam according to claim 3, wherein the drug is a repellent. 6. The foam according to claim 1, 2 or 3, wherein the inorganic porous fine particles are obtained by an interfacial reaction method.