JP7727368B2 - Deodorizing device - Google Patents

Description

The present invention relates to a deodorizing device that has excellent durability of deodorizing effect.

In recent years, along with the growing demand for more comfortable living, there has also been a growing need for odor control measures to make living spaces more comfortable. Conventional methods for combating odors in everyday life include using spray, aerosol, or stationary deodorizers, which are sprayed into the space or allowed to volatilize. These deodorizers use organic deodorizing ingredients such as dihydrazide compounds and amine compounds, as well as plant extracts such as polyphenols.

In the past, various deodorizing liquids have been developed with the aim of improving deodorizing functionality. For example, Patent Document 1 reports that a deodorizer containing a hydrazide compound, adenine sulfate, and cationic amino-modified silicone is not only excellent at removing aldehyde-based and ammonia-based malodorous components not only at room temperature but also in high-temperature environments, but also reduces the re-release of the removed malodorous components. Furthermore, Patent Document 2 reports that a deodorizer containing a hydrazide compound, hydroxylamine sulfate, smectite, and water can provide excellent deodorizing effects against both aldehydes and ammonia. However, Patent Documents 1 and 2 do not consider improving the durability of the deodorizing effect of the hydrazide compound.

JP 2012-19872 A JP 2010-5093 A

As an odor control measure, one effective method is to use a deodorizing liquid in a space where odor elimination is required (such as an indoor space or the inside of a vehicle) to eliminate or reduce odors in the space. When using a deodorizing liquid in a space like this, it is important that the deodorizing effect of the deodorizing ingredients is sustained.

Under these circumstances, the inventors investigated the durability of deodorizing liquids containing various deodorizing ingredients and found that while conventional deodorizing liquids, when used by leaving them in a space, provide excellent deodorizing effects while the liquid remains, over time, as the liquid dries out, the deodorizing effect disappears and cannot be sustained.

The present invention therefore aims to provide a deodorizing device with excellent long-lasting deodorizing effects.

The inventors conducted extensive research to solve the above-mentioned problems and discovered that a deodorizing liquid containing a deodorizing component and water, as well as a polyhydric alcohol, 3-methoxy-3-methylbutanol, and/or polyoxyethylene alkyl ether, dramatically improves the durability of the deodorizing effect of the deodorizing component, and that when used by impregnating an absorbent member, the deodorizing effect can be maintained even after the volatile components contained in the deodorizing liquid have evaporated and dried. They also discovered that excellently durable deodorization can be achieved by using a device configured to exert a deodorizing effect while the deodorizing liquid is absorbed into a liquid-absorbent member. The present invention was completed through further research based on these findings.

That is, the present invention provides the following aspects.
Item 1. A deodorizing liquid storage section that stores a deodorizing liquid;
a deodorizing liquid absorbing section that absorbs the deodorizing liquid supplied from the deodorizing liquid storage section and deodorizes the space,
The deodorizing liquid contains (A) a deodorizing component, (B) at least one selected from the group consisting of a polyhydric alcohol, 3-methoxy-3-methylbutanol, and a polyoxyethylene alkyl ether, and (C) water.
Deodorizing device.
Item 2. The deodorizing device further includes a deodorizing liquid storage section that stores the deodorizing liquid supplied from the deodorizing liquid storage section,
Item 2. A deodorizing device according to item 1, wherein the deodorizing liquid absorbing section is configured to suck up the deodorizing liquid from the deodorizing liquid storage section and absorb the deodorizing liquid.

With the deodorizing device of the present invention, the deodorizing liquid absorption section that deodorizes the space can maintain its deodorizing effect even when the volatile components contained in the deodorizing liquid evaporate and dry out, thereby improving the durability of the deodorizing effect.

1 is a schematic diagram showing a cross-sectional view of one embodiment of a deodorizing device of the present invention. 1 is a schematic diagram showing a cross-sectional view of one embodiment of a deodorizing device of the present invention.

The deodorizing device of the present invention comprises a deodorizing liquid storage section that stores deodorizing liquid, and a deodorizing liquid absorbing section that absorbs the deodorizing liquid supplied from the deodorizing liquid storage section and deodorizes the space, and is characterized in that the deodorizing liquid contains (A) a deodorizing component, (B) at least one selected from the group consisting of polyhydric alcohol, 3-methoxy-3-methylbutanol, and polyoxyethylene alkyl ether, and (C) water. The deodorizing device of the present invention is described in detail below.

[Deodorizing liquid]
The deodorizing device of the present invention uses a deodorizing liquid containing a deodorizing component (sometimes referred to as component (A)), at least one selected from the group consisting of polyhydric alcohol, 3-methoxy-3-methylbutanol, and polyoxyethylene alkyl ether (sometimes referred to as component (B)), and water (sometimes referred to as component (C)). By using a deodorizing liquid with such a specific composition, it becomes possible to maintain the deodorizing effect in the deodorizing liquid absorbing section that deodorizes the space, even after the volatile components (water, etc.) contained in the deodorizing liquid volatilize and the deodorizing liquid becomes dry.

(A) Deodorizing Component The deodorizing liquid used in the present invention contains a deodorizing component. The deodorizing component used in the present invention may be appropriately selected depending on the type of malodorous substance, and examples thereof include hydrazide compounds, amine compounds, polyphenols, betaine compounds, acids, bases, metal ions, etc. Suitable examples of deodorizing components include deodorizing components that exhibit deodorizing effects by adsorbing or reacting with aldehydes (formaldehyde, acetaldehyde, isovaleraldehyde, etc.). Specific examples of deodorizing components that exhibit deodorizing effects against aldehydes include hydrazide compounds, amine compounds, polyphenols, betaine compounds, etc.

Among the deodorizing components, hydrazide compounds are compounds that have one or more hydrazide groups (-NH- _NH2 ) in one molecule and have the effect of adsorbing and deodorizing aldehydes (formaldehyde, acetaldehyde, isovaleraldehyde, etc.) that cause bad odors.

The hydrazide compound used in the present invention may be a monohydrazide compound having one hydrazide group per molecule, a dihydrazide compound having two hydrazide groups per molecule, or a polyhydrazide compound having three or more hydrazide groups per molecule.

Specific examples of monohydrazide compounds include acetohydrazide, formhydrazide, carbohydrazide, lauric acid hydrazide, salicylic acid hydrazide, propionic acid hydrazide, p-hydroxybenzoic acid hydrazide, naphthoic acid hydrazide, and 3-hydroxy-2-naphthoic acid hydrazide.

Specific examples of dihydrazide compounds include succinic acid dihydrazide, adipic acid dihydrazide, oxalic acid dihydrazide, malonic acid dihydrazide, glutaric acid dihydrazide, pimelic acid dihydrazide, suberic acid dihydrazide, azelaic acid dihydrazide, sebacic acid dihydrazide, dodecanedioic acid dihydrazide, terephthalic acid dihydrazide, isophthalic acid dihydrazide, tartaric acid dihydrazide, malic acid dihydrazide, iminodiacetic acid dihydrazide, itaconic acid dihydrazide, dodecane dihydrazide, hexadecanedihydrazide, naphthoedihydrazide, benzenedihydrazide, pyridine dihydrazide, cyclohexane dihydrazide, and pyromellitic acid dihydrazide.

Specific examples of polyhydrazide compounds having three or more hydrazide groups per molecule include citric acid trihydrazide, trinitroacetic acid trihydrazide, nitriloacetic acid trihydrazide, cyclohexanetricarboxylic acid trihydrazide, ethylenediaminetetraacetic acid tetrahydrazide, naphthoic acid tetrahydrazide, and polyacrylic acid hydrazide.

These hydrazide compounds may be used alone or in combination of two or more.

Among the deodorizing components, amine compounds are compounds that have at least one amino group in each molecule. There are no particular restrictions on the type of amine compound used in the present invention, as long as it has a deodorizing effect, but examples include alkanolamines and polyamines.

Specific examples of alkanolamines include monoalkanolamines such as monoethanolamine, triethanolamine, monomethanolamine, propanolamine, isopropanolamine, aminomethylpropanol, N-methylethanolamine, N-methylisopropanolamine, N-ethylethanolamine, N-methylpropanolamine, and N-ethylbutanolamine; and dialkanolamines such as diethanolamine, dipropanolamine, diisopropanolamine, dibutanolamine, and 2-amino-2-methyl-1,3-propanediol.

Specific examples of polyamines include ethylenediamine, diaminopropane, and hexamethylenediamine.

These amine compounds may be used alone or in combination of two or more.

Among the deodorizing ingredients, polyphenols are compounds that contain a phenolic hydroxyl group in one molecule. The type of polyphenol used in the present invention is not particularly limited, as long as it has a deodorizing effect. Examples include flavanols (catechins), flavones, anthocyanidins, leucoanthocyanidins, and proanthocyanidins. Polyphenols are also found in plants such as cypress, grape seeds, pine, Japanese cypress, cedar, tea, camellia, camellia sasanqua, persimmon, bamboo, bamboo grass, sage, thyme, rosemary, eucalyptus, lavender, parsley, apple fruit, mushrooms, and algae. Therefore, extracts of these plants can also be used as deodorizing ingredients in the present invention. These polyphenols may be used alone or in combinations of two or more.

Among deodorizing ingredients, betaine compounds are compounds that have a positive charge and a negative charge at non-adjacent positions within the same molecule, with no dissociable hydrogen bonded to the positively charged atom, and the molecule as a whole has no charge. There are no particular restrictions on the type of betaine compound used in the present invention, as long as it has a deodorizing effect, but examples include lauryl dimethylaminoacetic acid betaine. These betaine compounds may be used alone or in combination of two or more.

Among the deodorizing components, the acid is not particularly limited as long as it has a deodorizing effect, but examples include citric acid. The acid may be used alone or in combination of two or more.

Among the deodorizing components, the base is not particularly limited as long as it has a deodorizing effect, but examples include bicarbonate. The base may be used alone or in combination of two or more types.

Among the deodorizing components, the metal ions are not particularly limited as long as they have a deodorizing effect, but examples include silver ions, magnesium ions, zinc ions, titanium ions, copper ions, etc. These metal ions may be used alone or in combination of two or more.

Of these deodorizing ingredients, from the perspective of further improving the durability of the deodorizing effect, preferred are hydrazide compounds and amino compounds; more preferred are alkanolamines, polyamines, monohydrazide compounds, and dihydrazide compounds; and even more preferred are acetohydrazide, succinic acid dihydrazide, adipic acid dihydrazide, carbohydrazide, propanolamine, aminomethylpropanol, 2-amino-2-methyl-1,3-propanediol, and ethylenediamine. In particular, acetohydrazide is particularly suitable for use, as the addition of component (B), described below, not only improves the durability of the deodorizing effect, but also enhances the deodorizing effect itself (deodorizing effect at the initial stage of use).

The content of component (A) in the deodorizing liquid used in the present invention can be set appropriately depending on the type of deodorizing component used, the target to be deodorized, the level of deodorizing effect to be achieved, and other factors, but is, for example, 0.1 to 20% by weight, preferably 0.5 to 10% by weight, and more preferably 1 to 5% by weight.

(B) Polyhydric alcohol, 3-methoxy-3-methylbutanol, and/or polyoxyethylene alkyl ether The deodorant liquid used in the present invention contains polyhydric alcohol, 3-methoxy-3-methylbutanol, and/or polyoxyethylene alkyl ether as component (B). By containing component (B) in this way, it is possible to improve the durability of the deodorizing effect of the deodorant component.

Of the polyhydric alcohols in component (B), examples include dihydric, dihydric, and tetrahydric alcohols. Specific examples of polyhydric alcohols include dihydric alcohols such as ethylene glycol, propylene glycol, triethylene glycol, diethylene glycol, triethylene glycol, and isoprene glycol; trihydric alcohols such as glycerin and butanetriol (1,2,3-butanetriol, 1,2,4-butanetriol); and tetrahydric alcohols such as erythritol and pentaerythritol. These polyhydric alcohols may be used alone or in combination of two or more.

Among the components (B), polyoxyethylene alkyl ethers are compounds in which a polyoxyethylene chain is ether-bonded to an alkyl group. The average number of moles of ethylene oxide added in the polyoxyethylene alkyl ether chain is not particularly limited, but may be, for example, 2 to 30, preferably 5 to 20, and more preferably 8 to 12. The alkyl group constituting the polyoxyethylene alkyl ether may be either linear or branched. The number of carbon atoms in the alkyl group constituting the polyoxyethylene alkyl ether is not particularly limited, but may be, for example, 8 to 22, preferably 8 to 14, and more preferably 8 to 10. Specific examples of polyoxyethylene alkyl ethers include POE octyl ether, POE isooctyl ether, POE decyl ether, POE isodecyl ether, POE lauryl ether, POE myristyl ether, POE cetyl ether, POE isocetyl ether, POE stearyl ether, POE isostearyl ether, POE arachidyl ether, and POE behenyl ether. Here, "POE" stands for polyoxyethylene, and these polyoxyethylene alkyl ethers may be used alone or in combination of two or more.

In the deodorant liquid used in the present invention, component (B) may be one selected from polyhydric alcohols, 3-methoxy-3-methylbutanol, and polyoxyethylene alkyl ethers and used alone, or two or more of these may be used in combination.

Of these (B) components, from the perspective of further improving the durability of the deodorizing effect, preferred examples include ethylene glycol, propylene glycol, triethylene glycol, glycerin, butanetriol, erythritol, pentaerythritol, 3-methoxy-3-methylbutanol, and polyoxyethylene alkyl ether.

In particular, when acetohydrazide is used as component (A), from the viewpoint of further improving the durability of the deodorizing effect, component (B) is preferably ethylene glycol, propylene glycol, triethylene glycol, glycerin, 3-methoxy-3-methylbutanol, and polyoxyethylene alkyl ether; more preferably ethylene glycol, triethylene glycol, glycerin, 3-methoxy-3-methylbutanol, and polyoxyethylene alkyl ether. Furthermore, when succinic acid dihydrazide is used as component (A), from the viewpoint of further improving the durability of the deodorizing effect, preferred examples of component (B) include ethylene glycol, propylene glycol, triethylene glycol, glycerin, butanetriol, erythritol, pentaerythritol, 3-methoxy-3-methylbutanol, and polyoxyethylene alkyl ether; more preferred examples are ethylene glycol, propylene glycol, triethylene glycol, glycerin, butanetriol, erythritol, and pentaerythritol; and particularly preferred examples are glycerin, butanetriol, erythritol, and pentaerythritol. Furthermore, when adipic acid dihydrazide and/or carbohydrazide is used as component (A), from the viewpoint of further improving the durability of the deodorizing effect, preferred examples of component (B) include glycerin. Furthermore, when propanolamine, aminomethylpropanol, and/or 2-amino-2-methyl-1,3-propanediol is used as component (A), glycerin is preferred as component (B) from the perspective of further improving the durability of the deodorizing effect.

The content of component (B) in the deodorizing liquid used in the present invention can be set appropriately depending on the type of component (B) used, the target to be deodorized, etc., but is, for example, 0.1 to 20% by weight, preferably 0.5 to 10% by weight, and more preferably 1 to 10% by weight.

In addition, the ratio of component (A) to component (B) in the deodorant liquid used in the present invention is, for example, 10 to 1,000 parts by weight, preferably 50 to 500 parts by weight, and more preferably 100 to 400 parts by weight of component (B) per 100 parts by weight of component (A).

The deodorant liquid used in the present invention contains water as a base. The content of water in the deodorant liquid may be the balance of the components (A) and (B) and other additives added as needed, but may be, for example, 50% by weight or more, preferably 60 to 99% by weight, and more preferably 70 to 97% by weight.

Monohydric Lower Alcohols The deodorant liquid used in the present invention may contain monohydric lower alcohols as needed. Examples of monohydric lower alcohols include monohydric alcohols having 2 to 5 carbon atoms, more specifically ethanol, n-propanol, isopropanol, n-butanol, sec-butanol, tert-butanol, n-amyl alcohol, sec-amyl alcohol, isoamyl alcohol, tert-amyl alcohol, and neopentyl alcohol. These monohydric lower alcohols may be contained alone or in combination of two or more.

When a monohydric lower alcohol is contained in the deodorizing liquid used in the present invention, its content is not particularly limited, but may be, for example, 1 to 30% by weight.

Other Components In addition to the components described above, the deodorant liquid used in the present invention may contain other additives, as long as they do not impair the effects of the present invention. Examples of such other additives include other solvents, pH adjusters, preservatives, antibacterial agents, disinfectants, antioxidants, UV absorbers, colorants, fragrances, surfactants, thickeners, etc.

[Device Structure]
In the deodorizing device of the present invention, a device is used to exert the deodorizing effect of the deodorizing liquid, which has a deodorizing liquid storage section that stores the deodorizing liquid, and a deodorizing liquid suction section that absorbs the deodorizing liquid supplied from the deodorizing liquid storage section and deodorizes the space.

In the deodorizing device of the present invention, the means for supplying deodorizing liquid from the deodorizing liquid storage section to the deodorizing liquid absorbing section is not particularly limited, and examples include a method of impregnating a portion of the deodorizing liquid absorbing section with the deodorizing liquid in the deodorizing liquid storage section; a method of adding the deodorizing liquid in the deodorizing liquid storage section to the deodorizing liquid absorbing section; a method of supplying deodorizing liquid from the deodorizing liquid storage section to a separately provided deodorizing liquid storage section and impregnating a portion of the deodorizing liquid absorbing section with the deodorizing liquid in the deodorizing liquid storage section, etc.

Examples of the deodorizing device of the present invention include the deodorizing device shown in Figure 1 (hereinafter referred to as the "first embodiment") and the deodorizing device shown in Figure 2 (hereinafter referred to as the "second embodiment").

The deodorizing device of the first embodiment has a deodorizing liquid storage section 1 that stores the deodorizing liquid, a deodorizing liquid storage section 2 that stores the deodorizing liquid supplied from the deodorizing liquid storage section 1, and a deodorizing liquid absorbing section 3 that sucks up the deodorizing liquid from the deodorizing liquid storage section 2 and absorbs the deodorizing liquid.

In the deodorizing device of the first aspect, the deodorizing liquid storage section 1 is arranged with its opening facing downwards, and deodorizing liquid is supplied from the opening of the deodorizing liquid storage section 1 to the deodorizing liquid storage section 2 by gravity. Furthermore, in the deodorizing device of the first aspect, a control valve may be provided at the opening of the deodorizing liquid storage section 1 to control the supply rate of the deodorizing liquid.

In the deodorizing device of the first aspect, the deodorizing liquid storage section 2 is configured to store the deodorizing liquid supplied from the deodorizing liquid storage section 1.

In the first aspect of the deodorizing device, the deodorizing liquid absorbing section 3 is arranged so that a portion of it is impregnated with the deodorizing liquid stored in the deodorizing liquid storage section, and is configured to absorb the deodorizing liquid and come into contact with the air in the space to be deodorized.

The deodorizing device of the first aspect may also be provided with an air blowing unit that blows air toward the deodorizing liquid absorbing unit 3. By providing such an air blowing unit, the deodorizing liquid absorbed in the deodorizing liquid absorbing unit 3 can be efficiently brought into contact with the air in the space, allowing for efficient deodorization.

The material of the deodorizing liquid storage section 1 in the deodorizing device of the first embodiment is not particularly limited and may be plastic, glass, ceramic, etc., with plastic being preferred.

The material of the deodorizing liquid reservoir 2 in the deodorizing device of the first embodiment is not particularly limited and may be plastic, glass, ceramic, etc., with plastic being preferred.

The material of the deodorizing liquid absorbing unit 3 in the deodorizing device of the first embodiment is not particularly limited as long as it is capable of absorbing deodorizing liquid. Examples include fibrous materials such as natural fibers such as cotton, plant fibers, and pulp; synthetic fibers such as rayon, polyester, polyethylene terephthalate, polypropylene, and polyethylene, or mixtures thereof; wood materials such as wood chips, rattan, bamboo, and sora; and resin sponge materials such as urethane foam. Furthermore, when the deodorizing liquid absorbing unit 3 is made of a fibrous material, it is preferably a nonwoven fabric, but woven or knitted fabrics are also acceptable. In Figure 1, the shape of the deodorizing liquid absorbing unit 3 is sheet-like, but it may also be rod-shaped, string-shaped, etc.

The deodorizing device of the second aspect has a deodorizing liquid storage section 1 with an opening, and a deodorizing liquid absorbing section 3 that sucks up the deodorizing liquid in the storage section and retains the deodorizing liquid.

In the second embodiment of the deodorizing device, the deodorizing liquid absorbing section 3 is inserted through the opening of the storage section and sucks up the deodorizing liquid, while the deodorizing liquid absorbing section 3, exposed outside the deodorizing liquid storage section, deodorizes the space.

The material of the deodorizing liquid storage section 1 in the deodorizing device of the second embodiment is not particularly limited and may be plastic, glass, ceramic, etc., with plastic being preferred.

The material of the deodorizing liquid absorbing unit 3 in the deodorizing device of the second embodiment is not particularly limited as long as it is capable of absorbing deodorizing liquid. Examples include fibrous materials such as natural fibers such as cotton, plant fibers, and pulp; synthetic fibers such as rayon, polyester, polyethylene terephthalate, polypropylene, and polyethylene, or mixtures thereof; wood materials such as wood chips, rattan, bamboo, and sora; and resin sponge materials such as urethane foam. Furthermore, when the deodorizing liquid absorbing unit 3 is made of a fibrous material, it is preferably a nonwoven fabric, but woven or knitted fabrics are also acceptable. In Figure 2, the shape of the deodorizing liquid absorbing unit 3 is sheet-like, but it may also be rod-shaped, string-shaped, etc.

[How to use]
The deodorizing device of the present invention is used for the purpose of removing or mitigating bad odors present in, for example, indoor spaces, vehicle interiors, pet care areas, and the like.

The deodorizing device of the present invention is installed in a space where deodorization is desired (such as an interior space or the interior of a vehicle), and achieves a deodorizing effect by volatilizing the volatile components (water, etc.) of the deodorizing liquid from the deodorizing liquid absorbing section. Furthermore, even if the deodorizing liquid in the deodorizing device of the present invention runs out over time and the deodorizing liquid absorbing section becomes dry, the deodorizing effect is still achieved by the deodorizing components remaining in the deodorizing liquid absorbing section. Therefore, the device can continue to be used with the deodorizing liquid absorbing section in a dry state without having to replenish the deodorizing liquid, replace the deodorizing liquid absorbing section, or replace the deodorizing device. The period of continued use from the point at which the deodorizing liquid absorbing section becomes dry varies depending on the composition of the deodorizing liquid, the space to be deodorized, etc., but can be used continuously for approximately 120 days, preferably approximately 30 days, from the point at which the deodorizing liquid absorbing section becomes dry.

The present invention will be explained in more detail below using examples and comparative examples, but the present invention is not limited to these.

Test Examples Deodorizing liquids having the compositions shown in Tables 1 to 4 were prepared, and the following tests were carried out to evaluate the durability of the deodorizing effect.

First, 0.4 g of each deodorizing liquid was dropped onto a test cloth (Cotton Kanakin No. 3, 5 cm x 5 cm, Japan Standards Association), placed on a petri dish, and dried with a dryer for 20 minutes (without using hot air), and then left to stand at room temperature for 60 minutes. Next, the test cloth treated as above was sealed in a 10 L Tedlar bag together with 5 L of odorless air. Then, acetaldehyde was introduced into the Tedlar bag so that the concentration was approximately 100 ppm. The time when acetaldehyde was introduced was set to 0 minutes, and the acetaldehyde concentrations in the Tedlar bag after 0 minutes and 60 minutes were measured using a gas detector tube (Acetaldehyde 92M, Gastec Corporation), and the deodorizing rate was calculated based on the following formula.

In this test, 0.4 g of deodorizing liquid was dropped onto a test cloth, which was then air-dried for 20 minutes and allowed to stand for 60 minutes before the deodorizing rate was measured. Therefore, a high deodorizing rate indicates excellent durability of the deodorizing effect. When 0.4 g of deodorizing liquid was applied to a test cloth and the deodorizing rate was measured under the same conditions as above without drying or leaving it to stand, it was confirmed that the deodorizing rate was 30 to 80% in all of the examples and comparative examples.

The results are shown in Tables 1 to 4. For deodorizing liquids containing only a hydrazide compound or an amide compound, the deodorizing rate was 0% after 20 minutes of drying and 60 minutes of standing, indicating that the deodorizing effect of the hydrazide compound was not sustained (Comparative Examples 1 to 8). On the other hand, for deodorizing liquids containing a hydrazide compound or an amide compound together with a polyhydric alcohol, 3-methoxy-3-methylbutanol, or polyoxyethylene alkyl ether, the deodorizing rate was high and the deodorizing effect was highly sustained, even after 20 minutes of drying and 60 minutes of standing (Examples 1 to 28).

The deodorizing rate (initial deodorizing rate) measured without drying or standing using a deodorizing liquid containing acetohydrazide alone (Comparative Example 1) was 31%. In contrast, the deodorizing liquids (Examples 1 to 7) that used acetohydrazide as the hydrazide compound and contained a polyhydric alcohol, 3-methoxy-3-methylbutanol, or polyoxyethylene alkyl ether had a deodorizing rate of 31% or higher after 20 minutes of drying and 60 minutes of standing. In other words, it was confirmed that the deodorizing liquids of Examples 1 to 7, by containing a polyhydric alcohol, 3-methoxy-3-methylbutanol, or polyoxyethylene alkyl ether, not only did the deodorizing effect of acetohydrazide last longer, but the deodorizing effect rate (initial deodorizing effect) of acetohydrazide itself was also improved.

On the other hand, the deodorizing rate (initial deodorizing rate) measured without drying or leaving to stand using a deodorizing liquid containing only succinic acid dihydrazide (Comparative Example 2) was 75%. In contrast, when succinic acid dihydrazide was used as the hydrazide compound and a polyhydric alcohol, particularly a trihydric or higher polyhydric alcohol, was used as component (B) (Examples 11-15), it was confirmed that the deodorizing effect lasted longer. In particular, when butanetriol was used as component (B), not only was the duration increased, but the deodorizing effect rate itself was also confirmed to be improved.

1 Deodorant liquid storage section 2 Deodorant liquid storage section 3 Deodorant liquid absorbing section 4 Deodorant liquid

Claims (2)

a deodorizing liquid storage section that stores a deodorizing liquid;
a deodorizing liquid absorbing section that absorbs the deodorizing liquid supplied from the deodorizing liquid storage section and deodorizes the space,
The deodorizing liquid (excluding those containing one or more metal ions selected from silver, zinc, copper, aluminum, iron, nickel, tin, and lead, and those containing phytoncides) contains (A) a deodorizing component, (B) at least one selected from the group consisting of polyhydric alcohol, 3-methoxy-3-methylbutanol, and polyoxyethylene alkyl ether, and (C) water,
the deodorizing component is at least one selected from the group consisting of hydrazide compounds, alkanolamines, polyamines, betaine compounds, magnesium ions , and titanium ions ;
The content of the (B) component is 0.1 to 20% by weight .
Deodorizing device. Further, the deodorizing device has a deodorizing liquid storage section for storing the deodorizing liquid supplied from the deodorizing liquid storage section,
The deodorizing device according to claim 1 , wherein the deodorizing liquid absorbing section is configured to suck up the deodorizing liquid from the deodorizing liquid storage section to absorb the deodorizing liquid.