Deodorizing device

Abstract

To provide a deodorant method having excellent persistence of deodorant effect.SOLUTION: The present invention provides a deodorant device that has a deodorant liquid storage part storing a deodorant liquid, and a deodorant liquid absorption part that absorbs the deodorant liquid supplied from the deodorant liquid storage part and deodorizes the space, wherein the deodorant liquid has (A) a deodorant component, (B) at least one selected from the group consisting of polyhydric alcohol, 3-methoxy-3-methylbutanol, and polyoxyethylene alkyl ether, and (C) water.SELECTED DRAWING: None

Description

[Technical Field]

[0001] The present invention relates to a deodorizing device that has excellent durability of deodorizing effect. [Background technology]

[0002] In recent years, along with the increasing demand for more comfortable living, there has also been an increasing need for odor control measures to make living spaces more comfortable. Conventionally, methods of combating odors in daily life have been known, such as using spray-type, aerosol-type, or stationary deodorizers to spray or volatilize the space. These deodorizers use organic deodorizing ingredients such as dihydrazide compounds and amine compounds, or plant extracts such as polyphenols, as deodorizing ingredients.

[0003] Various deodorants have been developed to improve deodorizing performance. For example, Patent Document 1 reports that a deodorant 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 at high temperatures, but also has little re-release of the removed malodorous components. Furthermore, Patent Document 2 reports that a deodorant containing a hydrazide compound, hydroxylamine sulfate, smectite, and water can exhibit 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. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Laid-Open No. 2012-19872 [Patent Document 2] Japanese Patent Application Laid-Open No. 2010-5093 Summary of the Invention [Problem to be solved by the invention]

[0005] One effective way to combat odors is to place a deodorizing liquid in a space where deodorization is desired (such as a room or car interior) to eliminate or mitigate odors. When using a deodorizing liquid in a space, it is important that the deodorizing effect of the deodorizing ingredients lasts.

[0006] Under these circumstances, the present inventors have investigated the durability of deodorizing liquids containing various deodorizing ingredients, and have found that, when conventional deodorizing liquids are used by leaving them in a space, they exhibit excellent deodorizing effects while the deodorizing liquid remains, but as time passes and they become dry, the deodorizing effect disappears and the deodorizing effect cannot be sustained.

[0007] SUMMARY OF THE INVENTION It is therefore an object of the present invention to provide a deodorizing device that has excellent durability of the deodorizing effect. [Means for solving the problem]

[0008] The inventors of the present invention have conducted extensive research to solve the above-mentioned problems and have found 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 a liquid-absorbent member, the deodorizing effect can be maintained even after the volatile components contained in the deodorizing liquid have evaporated and dried.The inventors have also found that by using a device configured to exert a deodorizing effect while the deodorizing liquid is absorbed into a liquid-absorbent member, it is possible to achieve deodorization with excellent durability.The present invention was completed through further research based on these findings.

[0009] 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. [Effects of the Invention]

[0010] According to the deodorizing device of the present invention, the deodorizing effect can be maintained in the deodorizing liquid absorbing section that deodorizes the space even after the volatile components contained in the deodorizing liquid have evaporated and become dry, thereby improving the durability of the deodorizing effect. [Brief explanation of the drawings]

[0011] [Figure 1] 1 is a schematic diagram showing a cross-sectional view of one embodiment of a deodorizing device of the present invention. [Figure 2] 1 is a schematic diagram showing a cross-sectional view of one embodiment of a deodorizing device of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0012] The deodorizing device of the present invention comprises a deodorizing liquid storage section that stores a deodorizing liquid, and a deodorizing liquid suction section that absorbs the deodorizing liquid supplied from the deodorizing liquid storage section and deodorizes a space, wherein 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. The deodorizing device of the present invention will be described in detail below.

[0013] [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 a polyhydric alcohol, 3-methoxy-3-methylbutanol, and a 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.

[0014] (A) Deodorizing ingredient 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. Further, suitable examples of the deodorizing component include deodorizing components that exhibit deodorizing action by adsorbing or reacting with aldehydes (formaldehyde, acetaldehyde, isovaleraldehyde, etc.). Specific examples of deodorizing components that exhibit deodorizing action against aldehydes include hydrazide compounds, amine compounds, polyphenols, betaine compounds, etc.

[0015] 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.

[0016] The hydrazide compound used in the present invention may be any of 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.

[0017] Specific examples of the monohydrazide compound 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.

[0018] Specific examples of the 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, benzene dihydrazide, pyridine dihydrazide, cyclohexane dihydrazide, and pyromellitic acid dihydrazide.

[0019] Specific examples of polyhydrazide compounds having three or more hydrazide groups in one molecule include citric acid trihydrazide, trinitroacetic acid trihydrazide, nitriloacetic acid trihydrazide, cyclohexanetricarboxylic acid trihydrazide, ethylenediaminetetraacetic acid tetrahydrazide, naphthoic acid tetrahydrazide, and polyacrylic acid hydrazide.

[0020] These hydrazide compounds may be used singly or in combination of two or more.

[0021] Among the deodorizing components, the amine compound is a compound having at least one amino group in one molecule. The type of amine compound used in the present invention is not particularly limited as long as it has a deodorizing effect, and examples thereof include alkanolamines and polyamines.

[0022] 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.

[0023] Specific examples of polyamines include ethylenediamine, diaminopropane, and hexamethylenediamine.

[0024] These amine compounds may be used alone or in combination of two or more.

[0025] Among the deodorizing components, polyphenols are compounds having 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, and 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. Extracts of these plants can also be used as deodorizing components in the present invention. These polyphenols may be used alone or in combination of two or more.

[0026] Among deodorizing components, betaine compounds are compounds that have a positive charge and a negative charge at non-adjacent positions within the same molecule, and the positively charged atom has no dissociable hydrogen bonded to it, so that the molecule as a whole has no charge. The type of betaine compound used in the present invention is not particularly limited, as long as it has a deodorizing effect, and examples include lauryl dimethylaminoacetic acid betaine. These betaine compounds may be used alone or in combination of two or more.

[0027] Among the deodorizing components, the acid is not particularly limited as long as it has a deodorizing effect, and examples thereof include citric acid, etc. The acid may be used alone or in combination of two or more.

[0028] Among the deodorizing components, the base is not particularly limited as long as it has a deodorizing effect, and examples thereof include bicarbonate, etc. The base may be used alone or in combination of two or more.

[0029] Among the deodorizing components, the metal ions are not particularly limited as long as they have a deodorizing effect, and examples thereof 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.

[0030] Among these deodorizing components, from the viewpoint 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 because, by the aid of component (B) described below, not only the durability of the deodorizing effect is improved but also the deodorizing effect itself (the deodorizing effect at the initial stage of use) is enhanced.

[0031] The content of component (A) in the deodorizing liquid used in the present invention may be appropriately set depending on the type of deodorizing component used, the target to be deodorized, the level of deodorizing effect to be imparted, etc., but may be, for example, 0.1 to 20% by weight, preferably 0.5 to 10% by weight, and more preferably 1 to 5% by weight.

[0032] (B) polyhydric alcohol, 3-methoxy-3-methylbutanol, and / or polyoxyethylene alkyl ether The deodorizing liquid used in the present invention contains a polyhydric alcohol, 3-methoxy-3-methylbutanol, and / or polyoxyethylene alkyl ether as component (B). By containing component (B), it is possible to improve the durability of the deodorizing effect of the deodorizing component.

[0033] Among the polyhydric alcohols of component (B), for example, dihydric to tetrahydric alcohols can be mentioned. 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 can be used alone or in combination of two or more.

[0034] 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.

[0035] In the deodorant liquid used in the present invention, as component (B), one may be 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.

[0036] Of these (B) components, from the viewpoint 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.

[0037] In particular, when acetohydrazide 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, 3-methoxy-3-methylbutanol, and polyoxyethylene alkyl ether; and more preferred examples include 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 are used as component (A), preferred examples of component (B) include glycerin; from the viewpoint of further improving the durability of the deodorizing effect. Furthermore, when propanolamine, aminomethylpropanol, and / or 2-amino-2-methyl-1,3-propanediol is used as component (A), glycerin is preferably used as component (B) from the viewpoint of further improving the durability of the deodorizing effect.

[0038] The content of component (B) in the deodorant liquid used in the present invention may be appropriately set depending on the type of component (B) used, the target to be deodorized, etc., but may be, for example, 0.1 to 20% by weight, preferably 0.5 to 10% by weight, and more preferably 1 to 10% by weight.

[0039] Furthermore, in the deodorant liquid used in the present invention, the ratio of component (A) to component (B) is, for example, 10 to 1000 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).

[0040] ·(C)Water 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, and may be, for example, 50% by weight or more, preferably 60 to 99% by weight, and more preferably 70 to 97% by weight.

[0041] · Monohydric lower alcohols The deodorant liquid used in the present invention may contain a monohydric lower alcohol, if necessary. 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, neopentyl alcohol, etc. These monohydric lower alcohols may be contained alone or in combination of two or more.

[0042] When the deodorant liquid used in the present invention contains a monohydric lower alcohol, the content thereof is not particularly limited, but may be, for example, 1 to 30% by weight.

[0043] Other ingredients In addition to the components described above, the deodorant liquid used in the present invention may contain other additives, as long as the additives do not impair the effects of the present invention. Examples of such other additives include other solvents, pH adjusters, preservatives, antibacterial agents, disinfectants, antioxidants, ultraviolet absorbers, dyes, fragrances, surfactants, thickeners, etc.

[0044] [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.

[0045] In the deodorizing device of the present invention, the means for supplying the 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 part 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 the deodorizing liquid from the deodorizing liquid storage section to a separately provided deodorizing liquid storage section and impregnating a part of the deodorizing liquid absorbing section with the deodorizing liquid in the deodorizing liquid storage section, and the like.

[0046] Examples of the deodorizing device of the present invention include the deodorizing device shown in FIG. 1 (hereinafter referred to as "first embodiment") and the deodorizing device shown in FIG. 2 (hereinafter referred to as "second embodiment").

[0047] 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 to absorb the deodorizing liquid.

[0048] In the deodorizing device of the first aspect, the deodorizing liquid storage section 1 is arranged with its opening facing downwards, and is configured so that the deodorizing liquid falls by gravity from the opening of the deodorizing liquid storage section 1 to the deodorizing liquid storage section 2. Furthermore, in the deodorizing device of the first aspect, the opening of the deodorizing liquid storage section 1 may be provided with a control valve for controlling the supply rate of the deodorizing liquid.

[0049] 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.

[0050] In the deodorizing device of the first aspect, 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.

[0051] The deodorizing device of the first aspect may also be provided with an air blowing section that blows air to the deodorizing liquid absorbing section 3. By providing such an air blowing section, the deodorizing liquid absorbed in the deodorizing liquid absorbing section 3 can be efficiently brought into contact with the air in the space, thereby enabling efficient deodorization.

[0052] The material of the deodorizing liquid container 1 in the deodorizing device of the first embodiment is not particularly limited, and may be made of plastic, glass, ceramic, etc., with plastic being preferred.

[0053] The material of the deodorizing liquid storage section 2 in the deodorizing device of the first embodiment is not particularly limited either, and may be made of any of plastic, glass, ceramic, etc., with plastic being preferred.

[0054] 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 can absorb deodorizing liquid, but 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 fabrics, knitted fabrics, and the like may also be used. In FIG. 1, the shape of the deodorizing liquid absorbing unit 3 is sheet-like, but it may also be rod-like, string-like, and the like.

[0055] The deodorizing device of the second aspect has a deodorizing liquid storage section 1 having an opening, and a deodorizing liquid absorbing section 3 that sucks up the deodorizing liquid in the storage section and holds the deodorizing liquid.

[0056] In the second embodiment of the deodorizing device, the deodorizing liquid absorbing section 3 is inserted through the opening of the storage section, sucking up the deodorizing liquid, and the deodorizing liquid absorbing section 3 exposed outside the deodorizing liquid storage section deodorizes the space.

[0057] The material of the deodorizing liquid container 1 in the deodorizing device of the second embodiment is not particularly limited, and may be made of plastic, glass, ceramic, etc., with plastic being preferred.

[0058] 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 can absorb deodorizing liquid, but 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 fabrics, knitted fabrics, etc. may also be used. In Figure 2, the shape of the deodorizing liquid absorbing unit 3 is sheet-like, but it may also be rod-like, string-like, etc.

[0059] [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.

[0060] 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 exerts a deodorizing effect by volatilizing the volatile components (such as water) of the deodorizing liquid from the deodorizing liquid absorbing section. Even if the deodorizing liquid runs out and the deodorizing liquid absorbing section becomes dry over time, the deodorizing effect is exerted by the deodorizing components remaining in the deodorizing liquid absorbing section. Therefore, the deodorizing device of the present invention can continue to be used with the deodorizing liquid absorbing section in a dry state without replenishing the deodorizing liquid, replacing the deodorizing liquid absorbing section, or replacing the deodorizing device. The period of continuous 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, and the like, but can be continuously used for, for example, about 120 days, preferably about 30 days, from the point at which the deodorizing liquid absorbing section becomes dry. [Example]

[0061] The present invention will be described in more detail below with reference to examples and comparative examples, but the present invention is not limited to these.

[0062] Test Example Deodorant solutions having the compositions shown in Tables 1 to 4 were prepared, and the following tests were carried out to evaluate the durability of the deodorant effect.

[0063] First, 0.4 g of each deodorizing solution was dropped onto a test cloth (Kanakin No. 3 cotton, 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. The treated test cloth was then sealed in a 10 L Tedlar bag along with 5 L of odorless air. Then, acetaldehyde was introduced into the Tedlar bag to a concentration of approximately 100 ppm. The time point at which acetaldehyde was introduced was designated as 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). The deodorizing rate was calculated based on the following formula:

number

[0064] In this test, 0.4 g of the 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, so a high deodorizing rate can be said to indicate excellent durability of the deodorizing effect.When 0.4 g of the deodorizing liquid was applied to a test cloth and the deodorizing rate was measured under the same conditions as above without drying or leaving to stand, it was confirmed that the deodorizing rate was 30 to 80% in all of the examples and comparative examples.

[0065] The results are shown in Tables 1 to 4. In the deodorizing liquid containing only a hydrazide compound or an amide compound, the deodorizing rate was 0% after 20 minutes of drying and 60 minutes of standing, and the deodorizing effect of the hydrazide compound was not sustained (Comparative Examples 1 to 8). On the other hand, in the deodorizing liquid 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 excellent in durability, even after 20 minutes of drying and 60 minutes of standing (Examples 1 to 28).

[0066] 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 more after 20 minutes of drying and 60 minutes of standing. That is, 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 increased the durability of the deodorizing effect of acetohydrazide, but also improved the deodorizing effect rate (initial deodorizing effect) of acetohydrazide itself.

[0067] On the other hand, the deodorizing rate (initial deodorizing rate) measured using a deodorizing liquid containing only succinic acid dihydrazide (Comparative Example 2) without drying or leaving to stand 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 to 15), it was confirmed that the durability of the deodorizing effect was increased. In particular, when butanetriol was used as component (B), it was confirmed that not only was the durability increased, but the deodorizing effect rate itself was also improved.

[0068] [Table 1]

[0069] [Table 2]

[0070] [Table 3]

[0071] [Table 4] [Explanation of symbols]

[0072] 1 Deodorant liquid storage section 2 Deodorizing liquid storage section 3 Deodorizing liquid absorption part 4. Deodorizing liquid

Claims

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 (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.

2. 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.

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