JPH1057457A - Aerosol composition for deodorization - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an aerosol compsn. for deocorization which has an excellent deodorization effect to hydrogen sulfide, ammonia, etc., rapidly develops the deodorization effect, has an excellent sustaining property and is easily and widely usable. SOLUTION: This aerosol compsn, fir deodorization is prepd. by compounding the inorg. power of amorphous aluminum-contg. composite phyllosilicate having three-component compsn. ratio consisting of 5 to 80mol% SiO2 , 5 to 65mol% ZnO2 and 1 to 60mol% Al2 O3 and having an average grain size of 0.1 to 50μm and a liquefied injecting agent, such as LPG. A photocatalyst, such as titanium dioxide, is preferably compounded therewith. Such aerosol compsn. for deodorization has the excellent deodorization effect to the malodor, such as ammonia, as shown in a graph of Fig. 1, is high in the development speed of the deodorization effect and has the excellent sustaining property as well. Since this compsn, is usable as an aerosol, its application range is wide and the easy use of the compsn. is possible.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a deodorizing aerosol composition having excellent deodorizing power and being widely applicable to household odors generated from homes and industrial odors generated from factories and the like. is there.

[0002]

2. Description of the Related Art With the urbanization and diversification of living environments, interest in odors around us has increased, and criticism of odors has become severe. For this reason, conventionally, various deodorants have been used in order to remove, for example, a living malodor generated at home and an industrial malodor generated from a factory.

Activated carbon is the most widely used deodorant. However, activated carbon has drawbacks such as being black and having a problem of coloring, and having insufficient deodorizing power against hydrogen sulfide and ammonia. In order to improve this point, activated carbon is loaded with a halide (Japanese Patent Laid-Open No. 55-51).
No. 421), and carrying a metal (JP-A-53-1).
No. 37089), and the spread of an acid or an alkali have been studied, but they are not yet sufficient.

Therefore, in order to fundamentally solve the above-mentioned problem of activated carbon, a specific aluminosilicate (Japanese Patent Application Laid-Open No.
No. 20874) has been proposed.
This deodorant has an excellent deodorizing effect against various malodors. Further, based on this technology, a deodorant sheet in which a specific zinc aluminosilicate is supported on a porous sheet (Japanese Unexamined Patent Publication No. Hei.
176448), a deodorant sheet using ammonium persulfate or the like (Japanese Patent Application Laid-Open No. 2-277455), a deodorant sheet obtained by laminating and integrating a base sheet composited with papermaking fibers and a synthetic fiber sheet (Japanese Patent Application Laid-Open No. 6-2855367) has been proposed. However, these deodorant sheets have problems in that it is difficult to efficiently expose the deodorant base to odor, the range of use is limited, the convenience is poor, and the persistence of the deodorant effect is poor. .

On the other hand, in addition to the above-mentioned deodorizing sheet, many studies have also been made on aerosol-type deodorizing agents, and deodorizing agents using magnesium silicate and zinc oxide having low coloring degree as deodorizing bases. (Japanese Patent Laid-Open Publication No. Hei 6-114095) has been proposed. However, this deodorant is insufficient in deodorizing speed.

[0006]

SUMMARY OF THE INVENTION The present invention solves the above-mentioned conventional problems, has an excellent deodorizing effect on hydrogen sulfide, ammonia, etc., has a rapid onset of the deodorizing effect, and has a long lasting effect. It is an object of the present invention to provide a deodorizing aerosol composition which is excellent in odor, can be used simply and widely.

[0007]

In order to achieve the above object, the deodorizing aerosol composition of the present invention has a three-component composition ratio of SiO ₂ : 5 to 80 mol% and ZnO ₂ : 5 to 65 mol. %, Al ₂ O ₃ : 1 to 60 mol%, and the average particle size is 0.1%.
It contains an inorganic powder of an amorphous aluminum-containing composite phyllosilicate having a particle size of 1 to 50 μm and a liquefied propellant.

That is, the above-mentioned specific aluminum-containing composite phyllosilicate has excellent deodorizing power, is particularly effective against hydrogen sulfide, ammonia and the like, and does not cause a coloring problem. In addition, by limiting the particle size of the inorganic powder of this specific aluminum-containing composite phyllosilicate, and by using a liquefied propellant together with the aerosol composition,
Exposure to odors can be performed efficiently, the deodorizing effect can be promptly developed, and the sustainability of the deodorizing effect is excellent. The use of the aerosol composition simplifies use, and the application range is wider than that of a sheet-like deodorant.

The deodorant aerosol composition of the present invention preferably contains at least one of a photocatalyst and a photocatalyst supporting a noble metal. The photocatalyst and the like exhibit an odor-eliminating effect by oxidatively decomposing organic substances and microorganisms that cause malodor by catalytic action of light.
By using this in combination, the deodorizing effect is synergistically improved, and the persistence of the deodorizing effect is further improved. As the photocatalyst, titanium dioxide is preferable for reasons of deodorizing effect and cost.

[0010] The deodorant aerosol composition of the present invention preferably contains a spreading agent and a dispersant. As a result, the dispersibility and spreadability of the deodorant when sprayed are enhanced, and the deodorant effect is quickly exhibited, and the durability of the effect is further improved. In addition,
"Spreadability" means that the deodorant base can be widely and uniformly adhered to an object.

[0011]

Next, the present invention will be described in detail. In the aerosol composition for deodorization of the present invention, the amorphous composite phyllosilicate used as a deodorant base is a composite of amorphous silica or silica alumina and a phyllosilicate formed on the surface thereof. It is. The amorphous composite phyllosilicic acid in the present invention is described in
Those described in JP-A-210017 are typical.

The composition of the composite phyllosilicic acid is 5 to 80 mol%, preferably 5 to 80 mol% of SiO _{2 in} a three-component composition ratio.
７０70 mol%, ZnO ₂ is 5 to 65 mol%, preferably 15 to 60 mol%, and Al ₂ O ₃ is 1 to 60 mol%, preferably 1 to 45 mol%.

The phyllosilicate is in the form of an inorganic powder and has an average particle size of 0.1 to be applied to an aerosol.
1 to 50 μm, preferably 0.1 to 20 μm
m, more preferably 0.1 to 10 μm. That is, if it is less than 0.1 μm, the powder tends to agglomerate and becomes unsuitable as an aerosol, whereas if it is more than 50 μm, the surface area of the powder decreases, and the deodorizing performance decreases.

The content of the phyllosilicate in the aerosol composition is not particularly limited, but is preferably 1 to 30% by weight, particularly preferably 3 to 15% by weight, since it is used as an aerosol.

In the photocatalyst used as required in the present invention, electrons and holes are separated on the surface of the photocatalyst upon irradiation with ultraviolet light or short-wavelength visible light.
Active oxygen (eg, OH,
OOH, · O ₂ ^- it is intended to produce, etc.). And
It is presumed that this active oxygen exerts a deodorant effect by reacting with odors, organic substances and germs that cause odors to oxidatively decompose.

The photocatalyst is not particularly limited as long as it can be excited by ultraviolet light or visible light having a short wavelength to effectively generate active oxygen.
e, Si, Ti, Zn, Cu, Al, Sn, Ga, I
n, P, As, Sb, C, Cd, S, Te, Ni, F
e, Co, Ag, Mo, Sr, W, Cr, Ba and P
b, a metal compound, a compound of the metal, an oxide of the metal, and the like. Examples of the metal compound include ZnS, SiC, CdS, GaP,
CdSe and the like; the metal composites include, for example, ZnS—CdS and CdS—CdSe; and the metal oxides include, for example, SnO ₂ and ZnO in addition to the above-mentioned titanium dioxide. ₂ , WO ₃ , Fe ₂ O ₃
And the like. These metals, compounds of the metals, composites of the metals and oxides of the metals can be used in combination of two or more. However, as described above, it is preferable to use titanium dioxide from the viewpoint of effect and economy, and it is particularly preferable to use titanium dioxide having an anatase-type crystal structure.

The average particle size of the photocatalyst is not particularly limited, but is preferably 0.005 to 1 μm, more preferably 0.005 to 0.02 μm, from the viewpoint of use as an aerosol and deodorizing performance.

The content of the photocatalyst in the aerosol composition is not particularly limited, but is preferably 1 to 10% by weight.
It is. Further, the photocatalyst may support a noble metal. This is because, by supporting the noble metal, recombination of separated electrons and holes is suppressed, and the oxidizing action is promoted.

As the noble metal, for example, Pt, G
Examples thereof include r, Rh, Au, Cu, Ni, and Al. Among them, platinum is preferred. The term “photocatalyst supporting a noble metal” refers to a method of mechanically mixing a photocatalyst particle and a noble metal, a method of mixing a suspension of a photocatalyst particle and a suspension of a noble metal particle, and then calcining the same. A method of suspending and baking the noble metal particles in a solution containing, a method of drying and baking after mixing aqueous solutions of photocatalyst particles and oxides of noble metals, chlorides, complexes, etc.
A method of mixing an aqueous solution of a chloride, a complex, etc. with an aqueous solution of a noble metal oxide, a chloride, a complex, etc., followed by drying and firing, and a method of mixing an aqueous solution of a photocatalytic metal oxide, a chloride, a complex, etc. with particles of a noble metal. It is produced by a method such as drying and firing.

In the photocatalyst supporting the noble metal, the ratio between the photocatalyst and the noble metal is not particularly limited.
Photocatalyst / noble metal = 1/1 to 10,000 / 1 is preferred. In the present invention, a preferable photocatalyst supporting a noble metal is titanium dioxide supporting platinum.

The ratio of the phyllosilicate used in the present invention to the photocatalyst is not particularly limited, but the phyllosilicate / photocatalyst = 1/10 to 1000/1 by weight is preferred.

The liquefied propellant used in the present invention includes:
Trichloromonofluoromethane, dichlorotetrafluoromethane, trichlorotrifluoromethane, carbon dioxide,
Liquefied petroleum gas (LPG) and the like can be used, and these can be used alone or as a mixture of two or more kinds. The compounding amount is usually 70 to 99% by weight, preferably 85% by weight based on the aerosol composition. ~ 97% by weight.

The aerosol composition of the present invention comprises:
If necessary, at least one of a dispersant and a spreading agent may be blended. By adding these additives, the dispersibility and spray properties of the powder in an aerosol are improved, and the deodorizing performance and the like are more effectively exhibited. The amount of the active ingredient (phyllosilicate and photocatalyst) is based on the weight ratio of the total of the dispersant and the spreading agent / active ingredient = 2/1 to 1/100, preferably 1.5 to 1.5. / 1-1
/ 10.

Examples of the dispersant and spreading agent include oils, surfactants, and silicones. The oil content,
Examples of silicons include liquid paraffin, isopropyl myristate, octyl myristate, dodecyl myristate, isopropyl palmitate, diisopropyl adipate, decamethylcyclopentasiloxane,
Silicone oil, avocado oil, jojoba oil, lanolin, cetyl 2-ethylhexanoate, cetyl stearate, butyl stearate, hexadecyl alcohol, isostearic acid, triethyl citrate, acetyl tributyl citrate, butyl phthalate, cetyl octanoate, And diisoadipate adipate. Among them, isopropyl myristate and decamethylcyclopentasiloxane are preferable.

Examples of the surfactant include an anionic surfactant, a cationic surfactant, a nonionic surfactant, and an amphoteric surfactant. Among them, polyoxyethylene glyceryl triisostearate, polyoxyethylene sorbitan triolate, polyoxyethylene nonyl phenyl ether, polyoxyethylene hydrogenated castor oil,
Nonionic surfactants such as tripolyoxyethylene alkyl ether phosphate are preferred, and fatty acid ester-based nonionic surfactants are particularly preferred.

Next, the deodorizing aerosol composition of the present invention can be prepared by mixing the above-mentioned raw materials at the above-mentioned predetermined ratio. The aerosol composition of the present invention can be used, for example, by filling it in a spray can and spraying it.

The aerosol composition of the present invention can be used to directly spray on the substance causing the offensive odor, and also by spraying on a base material such as fiber, paper, resin, glass and the like, and disposing the aerosol composition on the surrounding odor. It is possible to remove it.

The spray amount of the aerosol composition of the present invention is determined by the concentration of malodor and is not particularly limited. In addition, the aerosol composition of the present invention may be used in combination with other organic deodorants as long as the deodorizing power of the phyllosilicate is not impaired, or may be used in combination with a masking agent such as a fragrance. .

[0029]

Next, examples will be described together with comparative examples. (Examples 1 to 3) Raw materials shown in the following Table 1 were mixed in the proportions (% by weight) shown in the same table to prepare an aerosol composition for deodorization, which was filled in a spray can. The phyllosilicates shown in the table are Lionite PF (manufactured by Lion Corporation,
Average particle size of 3 to 5 μm), and titanium dioxide is ST-
01 (manufactured by Ishihara Sangyo Co., Ltd., average particle size 7 μm) was used.

Comparative Example 1 Phyllosilicate in powder form
(Same as Example) was used as a deodorant. (Comparative Example 2) An aerosol composition was prepared in exactly the same manner as in Example except that the phyllosilicate was not used, and this was filled in a spray can. This comparative example is for confirming the deodorizing effect of the photocatalyst alone.

The deodorizing aerosol compositions or deodorants of Examples 1 to 3 and Comparative Examples 1 and 2 thus obtained were dispersed, dispersedly dispersed, and spreadable by the following methods. The spreadability of the deodorant base and the deodorant properties of ammonia and hydrogen sulfide, which are typical odors, were examined.
The results are shown in the following Table 1, and the graphs of FIGS. In addition, about the comparative example 1, the dispersibility and the dispersion stability were not evaluated.

(Dispersibility) Glass container (capacity: 45 m)
l) was filled with the aerosol composition, and the dispersed state after 10 times of shaking (amplitude: 30 cm) was visually determined according to the following criteria.

◎: It looks like a completely uniform state ○: The convection state of the liquid can be confirmed △: Aggregation can be visually confirmed (dispersion stability) The aerosol composition is filled in a glass container (capacity: 45 ml), Shaking 10 times (amplitude 30c
m) After that, the mixture was allowed to stand, the time required for separation into two layers was measured, and the dispersion stability was determined according to the following criteria.

：: 30 minutes or more ○: 5 to 30 minutes Δ: 1 to 5 minutes (Spreadability) The aerosol composition was sprayed onto a glass plate of 100 mm × 100 mm × 2 mm in thickness so that the active ingredient was 100 mg, Then, after a slight vibration was given by tapping on a desk, the reduced weight was measured. The appearance was also observed at the same time. The spreadability was evaluated according to the following criteria. In Comparative Example 1, the same amount of the phyllosilicate inorganic powder as the amount sprayed in the example was directly rubbed on the glass plate.
Since almost no adhesion occurred, the evaluation was evaluated as x.

◎: The reduced weight is 0.1% or less of the weight excluding the liquefied propellant. ○: The reduced weight is 0.1 to 1% of the weight excluding the liquefied propellant. Δ: The reduced weight is not the liquefied propellant. 1% or more of the weight (spreadability of deodorant base) 100 mm x 100 mm x thickness 2
The aerosol composition was sprayed onto a glass plate of 10 mm from a position 10 cm apart for 3 seconds, and the spreadability of the deodorant base was visually determined according to the following criteria. In Comparative Example 1, the same amount of the phyllosilicate inorganic powder as that sprayed in the Example was directly rubbed against the glass plate, but hardly adhered to the glass plate.

◎: A state in which a transparent film was formed. ：: A state in which a white film was formed. 状態: A state in which white clusters were scattered in various places. (Deodorizing property) Deodorizing property of typical malodors such as ammonia and hydrogen sulfide Was examined. That is, first, 100m
Each aerosol composition was sprayed on a glass plate having a size of mx 100 mm x thickness of 2 mm so as to have an active ingredient content of 100 mg. Then, the glass plate was put into a transparent odor bottle (contents: 1400 ml),
The mixture was filled at a concentration of ppm, and irradiated with black light, and the ammonia concentration was measured with time using an ammonia detector tube (No. 3L, No. 3M, manufactured by Gastech Co., Ltd.). In Comparative Example 1, the phyllosilicate was sprayed on the bottom of the odor bottle so that the ratio of the active ingredient was the same, since spraying was not possible. The irradiation intensity of the black light is such that the amount of light received by the glass plate is 1000 mW / cm ² .

On the other hand, hydrogen sulfide was filled with hydrogen sulfide gas at a concentration of 500 ppm and measured using a hydrogen sulfide detector tube (No. 4H, No. 4M, manufactured by Gastech). Performed as in case. In addition, the graph of FIG. 1 shows the deodorizing property for ammonia gas, and the graph of FIG. 2 shows the deodorizing property for hydrogen sulfide gas.

[0038]

[Table 1]

From the above Table 1, it was confirmed that the aerosol compositions of Examples 2 and 3 had good dispersibility, dispersion stability, spreadability, and various properties of spreading of the deodorant base. In addition, the aerosol composition of Example 1, which did not use a dispersant or a spreading agent, had no problem in actual use and was at a practical level.

Next, as shown in the graphs of FIGS. 1 and 2, in the odor bottle sprayed with the aerosol composition of Example 1, both ammonia and hydrogen sulfide had higher deodorizing efficiencies than the comparative example. Then the deodorizing efficiency was even higher. Also,
In Example 3, the persistence of the deodorizing power of ammonia was confirmed. From these, it can be said that the aerosol compositions of Examples 1 to 3 exhibit an excellent deodorizing effect at an early stage, and are excellent in the persistence of the effect.

On the other hand, Comparative Example 1 was poor in spreadability and spreadability of the deodorant base. On the other hand, in Comparative Example 2, since the dispersant and the spreading agent were used, the dispersibility, the dispersion stability, the spreading property, and the spreadability of the deodorant base were good. Since only the photocatalyst was used and no phyllosilicate was used, the deodorizing performance against ammonia was high, but the deodorizing performance against hydrogen sulfide was scarce and the removable odor was biased.

[0042]

As described above, the aerosol composition of the present invention has an excellent deodorizing effect, and particularly can efficiently deodorize odors derived from ammonia, hydrogen sulfide and the like. In addition, the deodorizing effect has a high speed of expression, is excellent in persistence, and does not cause a coloring problem. And since it can be used as an aerosol, its use is simple and its application is wide. In addition, by using a photocatalyst such as titanium dioxide in combination, the deodorizing effect is further improved, and the durability is further improved. By adding a dispersant, a spreading agent, and the like, the dispersibility, the dispersion stability, the spreading property, and the spreadability of the deodorant base are improved, and therefore, the applicable range is further expanded.

As described above, the deodorizing aerosol composition of the present invention has high performance, has a wide range of application, and is easy to use. Various types of odors can be efficiently and easily deodorized, and as a result, our living environment and the like can be made comfortable.

[Brief description of the drawings]

FIG. 1 is a graph showing a change over time of an ammonia gas concentration in one embodiment of the present invention.

FIG. 2 is a graph showing a change over time of a hydrogen sulfide gas concentration in the example.

Claims (3)

[Claims] 1. The three-component composition ratio of SiO ₂ : 5 to 80 mol%, ZnO ₂ : 5 to 65 mol%, and Al ₂ O ₃ : 1 to 60
An aerosol composition for deodorization, which comprises an amorphous aluminum-containing composite phyllosilicate powder having an average particle diameter of 0.1 to 50 μm and a liquefied propellant. 2. The aerosol composition for deodorization according to claim 1, which comprises at least one of a photocatalyst and a photocatalyst supporting a noble metal. 3. The method according to claim 1, further comprising a spreading agent and a dispersing agent.
Or the aerosol composition for deodorization according to 2.