Method for improving persistence of deodorant effect of deodorant

Abstract

To provide a method for improving the persistence of deodorant effect of a deodorant.SOLUTION: According to the method herein, a deodorant contains at least one selected from the group consisting of polyhydric alcohol, 3-methoxy-3-methylbutanol, and polyoxyethylene alkyl ether, as well as a deodorant component and water, so that the persistence of deodorant effect of the deodorant component can be improved dramatically.SELECTED DRAWING: None

Description

[Technical field]

[0001] The present invention relates to a method for improving the durability of the deodorizing effect of a deodorant. [Background technology]

[0002] In recent years, along with the increasing demand for comfortable living, the need for odor control measures to make living spaces comfortable is also increasing. Conventionally, as odor control measures in daily life, methods of using spray-type, aerosol-type, stationary-type, etc. deodorants to spray or volatilize into the space are known. In such deodorants, organic deodorant components such as dihydrazide compounds and amine compounds, and plant extracts such as polyphenols are used as deodorant components.

[0003] Conventionally, various deodorants have been developed with the aim of improving deodorizing function. For example, Patent Document 1 reports that a deodorant containing a hydrazide compound, an adenine sulfate, and a cationic amino-modified silicone is excellent in removing aldehyde-based and ammonia-based malodorous components not only at room temperature but also at high temperatures, and also releases less of the removed malodorous components again. In addition, Patent Document 2 reports that a deodorant containing a hydrazide compound, hydroxylamine sulfate, smectite, and water can have an excellent deodorizing effect against both aldehyde and ammonia. However, Patent Documents 1 and 2 do not consider the improvement of the duration of the deodorizing effect of the hydrazide compound. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2012-19872 A [Patent Document 2] JP 2010-5093 A Summary of the Invention [Problem to be solved by the invention]

[0005] In conventional odor countermeasures, a deodorant is sprayed in a space where deodorization is required, or sprayed or applied to an item on which an odor has adhered, so that the sprayed or applied deodorant comes into direct contact with the odor. For a deodorant that is sprayed or applied directly to an odor in this way, it is important that the deodorant has a high deodorizing effect, but it is also desirable that the deodorant effect lasts.

[0006] On the other hand, as a measure against odors, a method of removing or mitigating odors in a space (such as an indoor space or a vehicle interior) by placing a deodorant in the space where deodorization is required (such as an indoor space or a vehicle interior) is also effective. In addition, a method of attaching a deodorant to structures (walls, floors, ceilings, doors, etc.) in the space where deodorization is required (such as an indoor space or a vehicle interior) or products (curtains, sofas, etc.) in the space to add a deodorizing function to the structures or products, thereby removing or mitigating odors in the space, is also effective. When removing or mitigating odors in a space using such a method, it is important that the deodorant component has a sustained deodorizing effect, since the deodorant is not sprayed directly onto the odor in the space.

[0007] As such, deodorizers (particularly those that are left in a space or attached to structures or products in the space) are required to have a sustained deodorizing effect.

[0008] Under these circumstances, the present inventors have investigated the sustainability of deodorants containing deodorant components and have found that, although conventional deodorants exhibit excellent deodorizing effects immediately after spraying or application, or when the deodorant remains in the space after being left to stand, over time as the deodorant dries out, the deodorizing effect disappears and the deodorizing effect cannot be sustained.

[0009] Therefore, an object of the present invention is to provide a method for improving the durability of the deodorizing effect of a deodorant. [Means for solving the problem]

[0010] The present inventors have conducted intensive research to solve the above problems, and have found that by incorporating at least one selected from the group consisting of polyhydric alcohol, 3-methoxy-3-methylbutanol, and polyoxyethylene alkyl ether together with the deodorant component and water in the deodorant, the duration of the deodorant effect of the deodorant component can be dramatically improved. More specifically, the inventors have found that when the deodorant of the above composition is used by impregnating a liquid-absorbent member or by attaching it to a structure of a space or a product in the space, the deodorant effect can be sustained even after the volatile components contained in the deodorant volatilize and become dry. The present invention was completed through further research based on this knowledge.

[0011] That is, the present invention provides the following aspects. Item 1. A method for improving the durability of the deodorizing effect of a deodorant, characterized in that the deodorant is blended with (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. How to improve sustainability. Item 2. The method for improving deodorizing effect according to claim 1, which is carried out to maintain the deodorizing effect after the deodorant has dried. Effect of the Invention

[0012] According to the present invention, the deodorizing effect of the deodorant can be improved. Therefore, even if the deodorant whose deodorant effect is improved by the method of the present invention is sprayed on the structure of the space where deodorization is required or the product in the space, the deodorant can maintain the deodorant function in the structure or product, and can effectively remove or mitigate the bad odor in the space. In addition, when the deodorant whose deodorant effect is improved by the method of the present invention is absorbed into a liquid-absorbent member and used, the deodorant can maintain the deodorant effect even if the volatile component contained in the deodorant volatilizes and the liquid-absorbent member becomes dry. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0013] The method of the present invention is a method for improving the durability of the deodorizing effect of a deodorant, which comprises blending, into the deodorant, component (A), at least one selected from the group consisting of polyhydric alcohols, 3-methoxy-3-methylbutanol, and polyoxyethylene alkyl ethers (B), and water (C). The method of the present invention will now be described in detail.

[0014] [(A) Deodorizing ingredient] In the method of the present invention, the deodorant contains a deodorant component. The deodorant 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. In addition, preferred examples of the deodorant component include deodorant components that exhibit a deodorant effect by adsorbing or reacting with aldehydes (formaldehyde, acetaldehyde, isovaleraldehyde, etc.). Specific examples of deodorant components that exhibit a deodorant effect 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 are effective in eliminating aldehydes (formaldehyde, etc.) that cause bad odors. It is a compound that has the effect of adsorbing and deodorizing odors (such as aldehyde, acetaldehyde, and isovaleraldehyde).

[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 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.

[0018] Specific examples of the dihydrazide compound 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, polyacrylic acid hydrazide, and the like.

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

[0021] Among the deodorant components, the amine compound is a compound having at least one amino group in one molecule. The type of the amine compound used in the present invention is not particularly limited as long as it has a deodorant 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 deodorant 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 deodorant effect, and examples thereof include flavanols (catechins), flavones, anthocyanidins, leucoanthocyanidins, and proanthocyanidins. In addition, polyphenols are contained 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, so that in the present invention, these plant extracts can also be used as deodorant components. These polyphenols may be used alone or in combination of two or more.

[0026] Among the deodorant components, the betaine compound is a compound that has a positive charge and a negative charge at non-adjacent positions in the same molecule, and the positively charged atom is not bound to dissociable hydrogen, and the molecule as a whole does not have a charge. The type of betaine compound used in the present invention is not particularly limited, as long as it has a deodorant effect, and examples thereof include lauryl dimethylamino acetate 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 kinds.

[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 kinds.

[0029] Among the deodorant components, the metal ions are not particularly limited as long as they have a deodorant 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 deodorant components, from the viewpoint of further improving the durability of the deodorant 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 preferred in the case of the component (B) described below. This not only improves the durability of the deodorizing effect but also enhances the deodorizing effect itself (deodorizing effect at the initial stage of use), making it particularly suitable for use.

[0031] In the method of the present invention, the amount of component (A) contained in the deodorant is determined based on the amount of the deodorant component used. The amount may be appropriately set depending on the type of component, the object to be deodorized, the level of deodorizing effect to be imparted, and the like, and 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, methoxymethylbutanol, and / or polyoxyethylene alkoxy] Kill Ether] In the method of the present invention, the deodorant contains, in addition to the component (A), a polyhydric alcohol, 3-methoxy-3-methylbutanol, and / or a polyoxyethylene alkyl ether as the component (B). By containing the component (B) in this way, it becomes possible to improve the durability of the deodorant effect of the component (A).

[0033] Among the (B) components, examples of the polyhydric alcohol include dihydric to tetrahydric alcohols. Specific examples of the polyhydric alcohol 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 and 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.

[0034] Among the components (B), polyoxyethylene alkyl ether is a compound in which the polyoxyethylene chain is alkyl. The polyoxyethylene alkyl ether is a compound having an ether bond with an alkyl group. The average number of moles of ethylene oxide added to 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" is polyoxyethylene, and these polyoxyethylene alkyl ethers may be used alone or in combination of two or more.

[0035] In the present invention, the component (B) is a polyhydric alcohol, 3-methoxy-3-methylbutanoic acid, One of polyoxyethylene alkyl ethers and polyoxyethylene alkyl ethers may be selected 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), the deodorizing effect is sustained. From the viewpoint of further improving the above, the 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. When dimethyl ether dihydrazide is used, from the viewpoint of further improving the durability of the deodorizing effect, it is preferable to use ethylene glycol or propylene glycol as the component (B). , triethylene glycol, glycerin, butanetriol, erythritol, pentaerythritol, 3-methoxy-3-methylbutanol, and polyoxyethylene alkyl ether; more preferably, ethylene glycol, propylene glycol, triethylene glycol, glycerin, butanetriol, erythritol, and pentaerythritol; particularly preferably, glycerin, butanetriol, erythritol, and pentaerythritol. In addition, adipic acid dihydrazide and / or calcium carbonate may be used as the component (A). When bohydrazide is used, glycerin is preferably used as component (B) from the viewpoint of further improving the durability of the deodorizing effect. 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] In the method of the present invention, the amount of the (B) component to be contained in the deodorant may be appropriately set depending on the type of the (B) component used, the target to be deodorized, and the like, and 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] In the method of the present invention, the ratio of the component (A) to the component (B) contained in the deodorant 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 the component (B) per 100 parts by weight of the component (A).

[0040] [(C)Water] In the method of the present invention, the deodorant contains water as a base. The amount of water contained in the deodorant may be the balance of the components (A) and (B) and other additives added as necessary, 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 alcohol] In the method of the present invention, the deodorant may contain a monohydric lower alcohol as necessary. Examples of the monohydric lower alcohol 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] In the method of the present invention, when the deodorant contains a monohydric lower alcohol, the content thereof is not particularly limited, and may be, for example, 1 to 30% by weight.

[0043] [Other ingredients] In the method of the present invention, the deodorant may contain other additives in addition to the above-mentioned components, as long as the effects of the present invention are not hindered. Examples of such other additives include other solvents, pH adjusters, preservatives, antibacterial agents, germicides, antioxidants, ultraviolet absorbers, dyes, fragrances, surfactants, thickeners, etc.

[0044] [Deodorizer with improved deodorizing effect] The deodorizer whose deodorizing effect durability has been improved by the method of the present invention can be used by applying it to spaces or objects where deodorization is required, for example, for the purpose of removing or mitigating bad odors present in indoor spaces, vehicle interiors, pet care areas, walls, floors, ceilings, curtains, sofas, bedding, beds, clothing, shoes, leather products, cloth products, storage furniture (shoe boxes, etc.), etc.

[0045] In order to deodorize using the deodorant whose deodorizing effect has been improved by the method of the present invention, the deodorant may be placed in an open container or in a liquid-absorbent member in a space to be deodorized or in the vicinity of a product to be deodorized. Examples of the liquid-absorbent member that absorbs the deodorant include fibrous materials such as natural fibers such as cotton, vegetable fibers, and pulp, synthetic fibers such as rayon, polyester, polyethylene terephthalate, polypropylene, and polyethylene, and mixed fibers thereof; wood materials such as wood chips, rattan, bamboo, and sora; and resin sponge materials such as urethane foam. In addition, when the liquid-absorbent member is made of a fibrous material, it is preferably a nonwoven fabric, but it may also be a woven fabric, knitted fabric, or the like. The shape of the liquid-absorbent member may be any of a sheet, a rod, a string, a block, and the like.

[0046] When a deodorant whose deodorizing effect durability has been improved by the method of the present invention is absorbed into an absorbent member and used, even if the volatile components (water, etc.) in the deodorant volatilize and the absorbent member becomes dry, the deodorizing effect is sustained, so the absorbent member in the dry state can be used continuously as is. The period during which the absorbent member can be used continuously from the point at which it becomes dry varies depending on the composition of the deodorant and the space to be deodorized, but for example, it can be used continuously for about 120 days, preferably about 30 days, from the point at which the absorbent member becomes dry.

[0047] In addition, when deodorizing a space (such as an indoor space or a vehicle interior space) using a deodorant whose deodorizing effect has been improved by the method of the present invention, the deodorant may be directly sprayed onto the space to be deodorized, but the deodorant may also be sprayed or applied to the structures of the space (walls, floors, ceilings, doors, etc.) or products in the space (curtains, sofas, etc.). In this way, by spraying or applying the deodorant onto the structures of the space or the products in the space, the structures of the space or the products in the space are given a deodorizing function, and the odor in the space is removed or alleviated. In this way, when deodorizing a space by giving a deodorizing function to the structures of the space or the products in the space, it is required that the deodorizing effect of the deodorant component attached to the structures or products is sustained, and the deodorant in which the method of the present invention is implemented has improved deodorizing effect sustainability and meets such required characteristics. One preferred embodiment of the deodorant in which the method of the present invention is implemented is a deodorant that is sprayed or applied onto walls to deodorize indoor spaces. In addition, when a deodorizer for which the method of the present invention has been implemented is sprayed or applied to structures in a space or products in a space in order to deodorize the space, the structures or products themselves are not the targets of deodorization, so there is no need for them to have a bad odor.

[0048] The form of the deodorant to which the method of the present invention is applied may be any of spray type, aerosol type, stationary type, wipe sheet type, etc. In the case of spray type or aerosol type, the deodorant to which the method of the present invention is applied is contained in a spray container or aerosol container, and the deodorant is sprayed on the space to be deodorized, the structure of the space, the product in the space, the product to be deodorized, etc. In the case of stationary type, the deodorant to which the method of the present invention is applied is contained in a container or absorbed into a liquid-absorbent member, so that it can be in contact with the space, and placed in the space to be deodorized or near the product to be deodorized. In the case of wipe sheet type, the surface of the object to be deodorized may be wiped with a fabric such as a nonwoven fabric impregnated with the deodorant to which the method of the present invention is applied. From the viewpoint of ease of use, etc., it is preferable to use the deodorant to which the method of the present invention is applied in the form of a spray type, aerosol type, or stationary type. EXAMPLES

[0049] 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.

[0050] Test Example Deodorants 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.

[0051] First, 0.4 g of each deodorant was dropped onto a test attachment white 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 attachment white cloth that had been treated as described 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 about 100 ppm. The time when acetaldehyde was introduced was set to 0 minutes, and the acetaldehyde concentration in the Tedlar bag after 0 minutes and 60 minutes was measured using a gas detector tube (Acetaldehyde 92M, Gastec Corporation), and the deodorization rate was calculated based on the following formula.

number

[0052] In this test, 0.4g of deodorant was dropped onto a test cloth, which was then air-dried for 20 minutes and left to stand for 60 minutes before the deodorant rate was measured, so if the deodorant rate is high, it can be said that the deodorant effect is excellent in durability. When 0.4g of the deodorant liquid was applied to a test cloth and the deodorant rate was measured under the same conditions as above without drying or leaving to stand, it was confirmed that the deodorant rate was 30-80% in all of the examples and comparative examples.

[0053] The results are shown in Tables 1 to 4. In the case of deodorants containing only a hydrazide compound or an amide compound, the deodorizing rate was 0% after drying for 20 minutes and leaving to stand for 60 minutes, and the deodorizing effect of the hydrazide compound was not sustained (Comparative Examples 1 to 8). On the other hand, in the case of deodorants containing a polyhydric alcohol, 3-methoxy-3-methylbutanol, or polyoxyethylene alkyl ether together with a hydrazide compound or an amide compound, the deodorizing rate was high and the deodorizing effect was excellent in durability even after drying for 20 minutes and leaving to stand for 60 minutes (Examples 1 to 28).

[0054] The deodorizing rate (initial deodorizing rate) measured without drying and standing using a deodorant containing acetohydrazide alone (Comparative Example 1) was 31%. In contrast, the deodorants (Examples 1 to 7) using acetohydrazide as the hydrazide compound and containing polyhydric alcohol, 3-methoxy-3-methylbutanol or polyoxyethylene alkyl ether had a deodorizing rate of 31% or more after drying for 20 minutes and standing for 60 minutes. That is, it was confirmed that the deodorants of Examples 1 to 7, which contain polyhydric alcohol, 3-methoxy-3-methylbutanol or polyoxyethylene alkyl ether, not only increase the persistence of the deodorizing effect of acetohydrazide, but also improve the deodorizing effect rate (initial deodorizing effect) of acetohydrazide itself.

[0055] On the other hand, the deodorizing rate (initial deodorizing rate) measured using a deodorant containing succinic acid dihydrazide alone (Comparative Example 2) without drying or leaving it to stand was 75%. In particular, when a polyhydric alcohol having a valence of 3 or more was used (Examples 11 to 15), it was confirmed that the deodorizing effect lasted longer. In this case, it was confirmed that not only was the durability increased, but the deodorizing effect rate itself also improved.

[0056] [Table 1]

[0057]

Table 2

[0058]

Table 3

[0059]

Table 4

Claims

1. A method for improving the durability of the deodorizing effect of a deodorizer that is absorbed into a liquid-absorbent member and then evaporated, the method being carried out to impart a property that the deodorizing effect is maintained even when the liquid-absorbent member is in a dried state, A method for improving sustainability of a deodorizer, comprising blending (A) a deodorizing component, (B) at least one selected from the group consisting of polyhydric alcohols, 3-methoxy-3-methylbutanol, and polyoxyethylene alkyl ethers, and (C) water into the deodorizer.

2. The method for improving sustainability described in claim 1, wherein the (A) deodorizing component is at least one selected from the group consisting of hydrazide compounds, amine compounds, polyphenols, betaine compounds, and metal ions.