JPS62212315A - Powdery deodorant - Google Patents

Abstract

PURPOSE:A powdery deodorant excellently effective for body smell such as axillary odor, body odor, etc., containing an inorganic substance selected from alkaline earth metallic silicate and carbonate or silica as a main component and porous hollow and spherical fine particles having specific particle diameters as an active ingredient. CONSTITUTION:A powder deodorant containing an inorganic substance (e.g. magnesium silicate, calcium silicate or calcium carbonate) selected from alkaline earth metallic silicate and carbonate or silica as a main component and approximately completely spherical porous hollow and spherical fine particles having 0.3-10mum particle diameter as an active ingredient. Since the inorganic substance has large specific surface area and is basic, it neutralizes lower fatty acids such as butyric acid, isovaleric acid, caproic acid, etc., and deodorizes body smell. Since the silica has very large specific surface area of 100-800m<2>/g, it adsorbs ammonia, amine, etc., and effectively deodorizes body smell. The deodorant has good fluidity and good feeling in use.

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to a powder deodorant. More specifically, armpit odor.

This invention relates to a powder deodorant that exhibits an excellent deodorant effect against body odor such as foot odor.

[Conventional technology]

Armpit odor 1 Strong body odor, such as foot odor, causes discomfort and pain not only to the person but also to those around them, placing a heavy psychological burden on those with body odor disorder.

In general, the mechanism by which body odor, including armpit odor, occurs has not yet been completely elucidated, but in the case of armpit odor (armpit odor), apocrine gland secretions, sebum, keratin, and cellular excrement are caused by the action of bacteria. It is thought that this substance is decomposed and produced as a substance characteristic of armpit odor.

Possible malodorous substances include lower fatty acids such as acetic acid, isovaleric acid, caproic acid, and caprylic acid, ammonia, amines, indole, mercaptans, and hydrogen hydride.

As a cosmetic that prevents the release and secretion of body odor.

■ Using an astringent to suppress the production of sweat with its strong astringent action ■ Using a disinfectant to prevent the growth of bacteria and preventing the decomposition of sweat ■ Using fragrances to mask the sweat. It is being

Basic aluminum chloride, basic aluminum chloride/propylene glycol complex, etc. are known as the most common astringents (2).

Also, the disinfectant for ■ is benzalkonium chloride.

Benzethonium chloride, triclosan isopropylmethylphenol, etc. are used.

[Problem that the invention seeks to solve]

However, since the above methods (■) and (2) indirectly prevent the release of body odor, their body odor removal effect is insufficient, and (■) merely serves to mask body odor intuitively; even if these astringents A satisfactory deodorizing cosmetic cannot be obtained even if a disinfectant, a disinfectant, and a fragrance are used in combination.

The present invention has carried out extensive research in order to overcome the drawbacks of conventional deodorant cosmetics and to develop a powdered deodorant that can directly, effectively and quickly remove body odor.

In the process, one of the inventors previously developed a W10 type emulsion prepared from an aqueous solution of a water-soluble inorganic compound such as sodium silicate and an organic solvent with a solubility in water of 5 wt% or less, and An aqueous solution of a water-soluble inorganic compound that reacts to form a water-insoluble precipitate.

For example, when mixing calcium chloride, sulfuric acid, etc., it is possible to produce microspheres that have the same size and shape as the emulsion particles that make up the emulsion. It was discovered that it is useful as a filler for plastics and a coloring agent for paints, etc., and the invention was completed in Japanese Patent Publication No. 55454/1983.

The present invention has been made as a result of research into the specificity of the shape and structure of microspheres produced by a method previously developed by one of the inventors, and the characteristics based on these, in particular, each of these microspheres has a uniform particle size. It is a nearly perfectly spherical powder with good fluidity and has a porous hollow structure.

The microspheres are composed of alkaline earth metal silicates.

In the case of an inorganic substance selected from carbonates, in addition to its large specific surface area, it has basic properties, that is, basic strength H-
shows +9.3<)-1-<+15.0, and (there is Hammett's basicity function (H-) for base strength, the more positive this value, the greater the base strength on the solid surface. Butyric acid, isovaleric acid, and caproic acid (butyric acid, isovaleric acid, and caproic acid).

It shows an effective deodorizing effect on the bad odor of lower fatty acids such as caprylic acid, and when the constituent component of the microspheres is silica, its specific surface area is from 100'IIi/9 to 80hf/
It shows a very large value of 9, and is used for deodorizing ammonia, amines, and other nitrogen-containing compounds, especially trimethylamine, which are mainly physically adsorbed on solid surfaces.

It was discovered and perfected that it exhibits excellent deodorizing properties.

(Means for solving problems) That is, two aspects of the present invention are alkaline earth metal silicates.

It is characterized by containing as an active ingredient porous, hollow, spherical fine particles which are mainly composed of an inorganic substance selected from carbonates or silica, and have a particle size of 0.3 tIIrt to 10 pm and exhibit an almost perfect spherical shape. Its main feature is a powder type deodorant composition, which is effective against body odor such as armpit odor and foot odor, especially lower fatty acids such as butyric acid, isovaleric acid, caproic acid, and caprylic acid, and ammonia and trimester. It exhibits a significantly high deodorizing effect on malodorous components of amines such as delamine, and the effect is visible within a short period of time after use. Therefore, the time required for mental distress from the time the odor begins to bother you until the onset of effects is short. Also, the particle size of 2 is 0.3
/a to 101JI! Because it is an almost perfectly spherical particle of 1.

When applied to the skin, it has good fluidity and has a rough texture, giving a good feeling of use.

Examples of inorganic substances selected from alkaline earth metal silicates and carbonates used in the composition of the present invention include magnesium silicate, calcium silicate, and calcium carbonate, and the composition mainly contains silica. When configured as
Examples include porous hollow and spherical silica particles.

The powder deodorant composition of the present invention has a particle size of 0.3 to 10.
The essential component is porous, hollow, spherical fine particles of an inorganic material selected from alkaline earth metal silicates and carbonates, or porous, hollow, spherical fine particles of silica, which exhibit a nearly perfect spherical shape. No powder such as talc.

It may contain an astringent such as basic aluminum chloride, a bactericide such as benzalkonium chloride, a fragrance, and other additives as necessary.

[Action and effect]

According to the powder deodorant of the present invention, lower fatty acids such as butyric acid, isovaleric acid, caproic acid, and caprylic acid.

Odors of ammonia, amines, and other nitrogen-containing compounds can be removed extremely efficiently. The reason for this is that the strength of the basic properties of the powder solid surface plays a major role in the deodorization of lower fatty acids such as butyric acid, isovaleric acid, and caproic acid; In addition to having a large specific surface area, porous hollow and spherical fine particles of alkaline earth metal silicates and carbonates exhibit a basic strength of +9.3<H-<+15.0,
It is thought that due to this basic property, the lower fatty acid, which is an acid, undergoes a neutralization reaction on the solid surface and is deodorized.

In addition, amines such as ammonia and trimethylamine,
and for deodorizing other nitrogen-containing compounds.

Since these malodorous molecules are adsorbed to form a monomolecular layer on the solid surface, the specific surface area of the powder is strongly involved, and
The powder, which has a very large specific surface area of 077f/9 to 800TIl/9, adsorbs malodor molecules to its solid surface, resulting in effective deodorization.

Therefore, porous hollow spherical fine particles that are composed mainly of an inorganic substance selected from silicates and carbonates of alkaline earth metals or silica and exhibit an almost perfect spherical shape with a particle size of 0.3R1 to 10 μm. Powder deodorants containing as an active ingredient are thought to exhibit extremely effective deodorizing effects against the bad odors of lower fatty acids, ammonia, and amines.

The composition of the present invention can be used as it is as a powder.

It may also be used as a powder spray type, that is, in a container filled with this composition together with a propellant such as chlorofluorocarbon gas, and as an aerosol type.

[Examples, effects]

Next, the present invention will be explained in more detail with reference to two compositions of 'FJMa' and examples, but the present invention is not limited in any way by the production examples and examples shown below.

Production example Production example 1゜500L 3/4 aqueous solution of No. 1 sodium silicate 100m
1 and a nonionic surfactant (a mixture of polyoxyethylene sorbitan monooleate and sorbitan monostearate at a weight ratio of 1:1) in 3 wt% toluene solution 5
0M and stirred vigorously using an emulsifier to create an emulsion.

The above emulsion was mixed with 1 mol/i magnesium chloride aqueous solution 20
Add to 0.00 min. with stirring, continue stirring for 20 minutes, then add 2.
Leave for an hour and then sediment the particles by centrifugation.

The toluene and aqueous solutions were separated, filtered, washed with water, washed with alcohol, and dried to obtain 29.6 g of porous hollow spherical particles containing magnesium silicate as the main component. This has a particle size of 0.5/7171 to 8tJlft and a specific surface area of 27
0.3Td/'J, base strength +9.3<H-<+15.
()showed that.

Production example 2゜No. 1 sodium silicate 5009/1 aqueous solution 100
mg and 400 rd of a 2 wt% toluene solution of a nonionic surfactant (a mixture of polyoxyethylene sorbitan monooleate and sorbitan monostearate in a weight ratio of 1:2), and stirred vigorously using an emulsifier. Make an emulsion.

Add the above emulsion to 150 mol/1 calcium chloride aqueous solution.
0rnl with stirring, continue stirring for 20 minutes,
Below, +! ! In the same manner as in Example 1, one particle size was 0. aIJrr
From &, 63.99 porous hollow spherical fine particles containing calcium silicate as a main component with a specific surface area of 103.71 Td/g and a basic strength of +9.3<1-1-<+15.0 were obtained.

Production Example 3゜50g of porous hollow spherical fine particles mainly composed of calcium silicate obtained in Production Example 2 above were moistened with ethanol,
Add 500ml of 3N hydrochloric acid and leave for 12 hours.

Next, it is filtered, washed with water, and dried to obtain particles whose main component is silica with a diameter of 0.3tR to 77m and a specific surface area of 561.8TIt/
38.1 g of porous hollow spherical fine particles of No. 9 were obtained.

Production Example 4. 100me of a 3 mol/l aqueous sodium carbonate solution and a mixture of polyoxyethylene sorbitan monooleate and sorbitan monostearate (mixing weight ratio: 1:2).
200 ml of a 5 wt% toluene solution was mixed and stirred vigorously using an emulsifier to form an emulsion.

Add the above emulsion to 0.4 mol/i calcium chloride aqueous solution 1
500ml with stirring, and continued stirring for 20 minutes.Then, the same procedure as in Production Example 1 was carried out to obtain particles with a particle size of 1.0 to 10.
Fuchi, specific surface area 5.0 foot/? J, base strength +9.3<H-
<+15.0 porous hollow spherical fine particles 29.59 mainly composed of calcium carbonate were obtained.

Production example 5゜No. 1 sodium silicate 500=J#! Aqueous solution 100
m+! 3w of a 1:1 mixture of polyoxyethylene sorbitan monooleate and sorbitan monostearate
t% toluene solution 300rd and stirred vigorously using an emulsifier to form an emulsion. The above emulsion was added to 1100 hte of a 1 mol/i ammonium sulfate aqueous solution with stirring, continuously stirred for 1 hour, and left for 24 hours.

Hereinafter, in the same manner as in Production Example 1, 8 grains were obtained from 2 grains with a diameter of 0.5.

Porous hollow spherical fine particles 19.19 containing silica as a main component and having a specific surface area of 542.5 TIt/g were obtained.

ExamplesExample 1゜50mg of deodorant shown in Table 1
Transfer to a m1 Erlenmeyer flask, insert a filter paper impregnated with acetic acid 10, and seal the flask tightly. After 30 minutes (to vaporize the bad odor and cause a wet odor to occur through a gas-solid reaction), the headspace gas in the container was collected using a 5mm syringe and analyzed by entering it into a gas chromatography (GC).

The odor removal rate was determined as follows.

Bad odor removal rate (%) = The results are shown in Table 1.

Table 1 Malodorous substance: butyric acid 10u1 Example 2゜Deodorant 100525F shown in Table 2, 200mg1
Transfer 300 mg of the flask to a 50 m Erlenmeyer flask, add filter paper impregnated with trimethylamine 151Q, and immediately seal the flask. After 5 minutes had elapsed, the headspace gas in the container was collected using a 5d copper pourer, and analyzed by entering it into a gas chromatography (GC) to determine the malodor removal rate in the same manner as in Example 1.

The results are shown in Table 2.

Table 2 Malodorous substance nitrimethylamine 15m Example 3゜ Porous hollow spherical fine particles containing calcium carbonate as the main component obtained in Production Example 4 or basic aluminum chloride 1.5
A small powder spray container was prepared by filling a container with 48.59 g of chlorofluorocarbon gas (a 3:7 mixed gas of Freon 1 [trichlorofluoromethane] and Freon 12 [dichlorodifluoromethane]). Using this spray container, apply the contents from 1 to
The odor was sprayed for 2 seconds, and the strength of the odor before and 20 minutes after spraying was judged by olfactory sense by a panel of 20 people.

The results are shown in Table 3.

Claims (1)

[Claims] 1) The main component is silica or an inorganic substance selected from silicates and carbonates of alkaline earth metals, and has a particle size of 0.3 μm.
A powder deodorant characterized by containing as an active ingredient porous hollow spherical fine particles exhibiting an almost perfect spherical shape of 0.3 μm to 10 μm 2) The porous hollow spherical fine particles are composed of silica as a main component, Particle size of 10μm and 100m^
The powder deodorant according to claim 1, which has a specific surface area of 2/g to 800 m^2/g. 3) The inorganic substance is selected from magnesium silicate, calcium silicate, and calcium carbonate. The powder deodorant according to claim 1, which is