JP2006149893A - Urine odor suppressing method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an art effectively and simply reducing urine odor. <P>SOLUTION: This urine odor suppressing method suppresses the urine-derived odor by applying composition for suppressing the urine odor including nonvolatile odor suppressing components to a range where the urine may be attached and dried. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a method for suppressing urine odor.

Consumers are becoming more aware of the odors of the space due to the high airtightness of houses and the awareness of consumers' cleanliness. In general, unpleasant odors in homes include a variety of odors such as odor derived from manure in the toilet space, kitchen garbage odor, cigarette odor in the living room, shoe odor in the front door, etc. Is a living odor that occurs in normal life.
In particular, a relatively small space such as a toilet blocks the diffusion of air, so once the odor is emitted, the odor drifts into the space, making it a representative of uncomfortable spaces for consumers. ing.

Once the toilet odor diffuses into the space, the sensory threshold concentration is so low that even a very small amount can cause an unpleasant odor.
Conventionally, physical methods and chemical methods have been employed as methods for eliminating such unpleasant odor components.

Examples of physical methods include (Method 1) ventilation by opening and closing windows, forced ventilation by air conditioning equipment, and the like. In addition, (Method 2) there is also an adsorption method in which an unpleasant component is adsorbed and deodorized by utilizing the adsorption power of activated carbon or the like.
On the other hand, chemical methods include (Method 3) various chemical treatment methods such as fragrances and deodorants, and (Method 4) masking method.
(Method 3) is generally one that deodorizes (chemically neutralizes or decomposes odor components) with acid, alkali, enzyme or the like. Japanese Patent Laid-Open No. 11-504977 (Patent Document 1) discloses a technique for removing malodors such as toilets by containing a specific enzyme.
(Method 4) is the most practiced method in general households, and deodorizes by masking unpleasant odors with the aroma of the deodorant itself.

In addition, a toilet cleaner composition containing a nitrogen-containing polymer as described below has been proposed.
For example, Japanese Patent Application Laid-Open No. 2001-303098 (Patent Document 2) describes an amphoteric surfactant as a deodorant cleaning component and a “toilet prevention” containing a water-soluble polymer containing a quaternary ammonium group in the molecule as an antifouling component. A “deodorizing and cleaning agent composition” has been proposed. JP-A-2002-348596 (Patent Document 3) describes a toilet cleaning composition containing a specific nitrogen-containing polymer, a surfactant, and a fragrance component.
These are all intended to be sprayed into the toilet bowl, to wash the toilet bowl and to provide a dirt adhesion preventing effect. And in the technique of patent document 2, since an amphoteric surfactant functions as a deodorizing agent, it describes that the deodorizing effect is also acquired. Moreover, in the technique of patent document 3, it is set as the description from which a fragrance | flavor is mix | blended for deodorizing and the deodorizing effect is acquired by this.
Japanese National Patent Publication No. 11-504977 JP 2001-303098 A JP 2002-348596 A

By the way, one of the causes of toilet odor is urine odor.
However, with respect to such a urine odor, the conventional (Method 1) to (Method 4) have the following problems.
(Method 1) has many toilets with no windows set in recent housing situations, and these methods lead to the introduction of outside air factors into the room, so in places where the outside air is contaminated. On the contrary, it becomes a cause of polluting the room and is not a general method, and the effect is insufficient.
Further, (Method 2) cannot be effective unless the adsorbing component and the odor component are sufficiently in contact with each other, and is not an efficient deodorizing method, such as an upper limit in the amount of adsorption. The effect is also insufficient.
(Method 3) is an effective means when the target malodor component is single, but it is not necessarily effective for the complex odor of various odor components such as urine odor. In addition, (Method 4) has a personal preference for the odor and strength of the deodorant itself, and since some of the fragrances have a sense of disgust, the effect is largely due to individual differences. It is hard to say that the effect is sufficient.

  In addition, the cleaning compositions disclosed in Patent Documents 2 and 3 both remove dirt inside the toilet bowl and reduce the influence of bad odor generated by the effect of the blended deodorant component. Like (Method 4), it cannot be said that the effect is sufficient.

  Accordingly, an object of the present invention is to provide a technique capable of effectively and simply reducing urine odor.

In order to solve the above problems, the present invention proposes the following means.
According to a first aspect of the present invention, there is provided a method for suppressing urine odor, wherein a urine-derived odor is suppressed by applying a composition containing a nonvolatile odor suppressing component to a range where urine adhesion and drying can occur. It is.
2nd invention is the urine odor suppression method of said 1st invention using the composition containing nitrogen-containing water-soluble polymer as a non-volatile odor suppression component.
A third invention is a method of applying by spraying as a method of applying a composition containing a non-volatile odor suppressing component in the urine odor suppressing method of the first or second invention, and immediately after spraying. This is a method for suppressing urine odor, which uses a method in which the particle size of the composition is 300 μm or less.

  In the present invention, a method capable of effectively and simply suppressing urine odor can be provided.

When the inventor examined the odor of the toilet, it was found that the urine which was splashed was scattered on the floor or wall, although it was not visible in the toilet. And it turned out that the strong odor derived from urine generate | occur | produces in the process in which this dries, or after drying (especially after drying).
Therefore, as a method for simply suppressing the odor of urine adhering to the wall or the like in this way, in the urine odor suppression method of the present invention, it is preferable for the range in which urine adherence and drying can occur (for example, urine scattering site). Apply a composition containing a non-volatile odor suppressing component (hereinafter referred to as “urine odor suppressing composition” for convenience) before the urine dries.

The non-volatile odor suppressing component (hereinafter sometimes referred to as the component (a)) does not volatilize even when applied to the urine adhering surface after the urine is scattered, for example. Therefore, when the composition for suppressing urine odor is applied, the urine and the non-volatile odor suppressing component in the urine odor suppressing composition are sufficiently in contact with each other, and the generation of odor in the process of drying the urine is effectively suppressed. be able to.
By applying the composition for suppressing urine odor containing the non-volatile odor suppressing component in this manner to the portion where the urine droplets adhere, before the urine is completely dried, preferably immediately after the urine is adhered, It is possible to prevent the odor from being generated.

  Here, in the present invention, the composition for suppressing urine odor is applied to a portion that adheres when urine scatters or the like and dries if left untreated (range where urine adheres and can be dried). Specifically, for example, a toilet floor, a wall, an outer wall of a toilet, and the like. Therefore, unlike the cleaning composition disclosed in Patent Documents 2 and 3, application to a portion where water flows frequently such as inside a toilet bowl is not suitable.

The method for applying the composition for suppressing urine odor is not particularly limited, and examples thereof include a method in which the composition is directly applied to the odor generating source by spraying or the like. In addition, although the method of apply | coating the composition for urine odor suppression to a target surface with sheets, such as a nonwoven fabric impregnated with the composition for urine odor suppression, you may use the method of accommodating in a container and spraying.
And after apply | coating, even if it does not perform wiping operation, an odor can be suppressed. Although wiping may be performed, it is usually not particularly necessary. Therefore, it can process very simply and efficiently.

When the urine odor suppressing composition is stored in a container, the container to be stored is a type of spraying with a trigger sprayer on the target surface on which urine is scattered and attached, foam or mist And a method in which the composition for spraying urine odor is discharged from a bottle mouth. More preferably, a mist trigger sprayer, a mist aerosol, a mist dispenser, etc. are mentioned, and a mist trigger sprayer is particularly preferable.
In the method of applying by spraying, immediately after spraying, the maximum particle size of the urine odor suppressing composition is desirably 300 μm or less, more preferably 150 μm or less, and particularly preferably 100 μm or less. By making it 300 μm or less, the composition for suppressing urine odor dries quickly, which is preferable. Moreover, aggregation after spraying can be prevented and uniform application can be achieved. The smaller the particle size, the better the quick-drying property. From this point of view, there is no technical significance for defining the lower limit, but the minimum particle size is preferably 10 μm or more, preferably 15 μm or more, particularly 30 μm or more. . When the thickness is 10 μm or more, it is possible to effectively prevent soaking after spraying and efficiently apply.

In addition, a particle size can be measured on condition of the following using particle size distribution measuring device LDSA-1300A (brand name) by Tohnichi Computer Applications.
Lens used: 300mm
Focal length: 30cm
Spray distance: 10cm
Analysis model formula: Rosin-Rammler formula

  The particle size can be changed, for example, by changing the container; changing the nozzle diameter if spraying, adjusting the amount of spraying pressure with a pressure valve, adjusting the gas pressure if aerosol, etc. Can be prepared.

A particularly preferred embodiment is a composition for suppressing urine odor, for example, immediately after adding use in the toilet and before the splattered urine is dried, preferably on the entire wall or floor of the toilet, preferably in the form of a mist with a spray, etc. It is to spray things.
In this way, if it is customary to spray the composition for suppressing urine odor immediately after using the toilet, it is possible to always suppress malodor generated from urine droplets and maintain a comfortable toilet space. it can.
The method of the present invention is not limited to a toilet, and can be applied without limitation as long as the urine odor generated in the process of drying attached urine becomes a problem.

Next, the composition for suppressing urine odor used in the present invention will be described.
"Non-volatile odor control ingredients"
Examples of the non-volatile odor suppressing component (component (a)) include inorganic clay minerals such as water-soluble polymers and smectites.
Examples of the water-soluble polymer include a nitrogen-containing water-soluble polymer and a water-soluble polymer not containing nitrogen.

Nitrogen-containing water-soluble polymers include homopolymers and copolymers obtained by polymerizing at least one selected from the group consisting of vinylpyrrolidone, ethyleneimine, acrylamide, and dimethyldiallylammonium chloride; acrylic acid and / or its salt and acrylamide Copolymer, poly (meth) acrylamide partial hydrolyzate (“poly (meth) acrylamide” refers to acrylamide and / or methacrylamide polymer), dimethyldiallylammonium chloride and acrylamide copolymer, O— Among nitrogen-containing water-soluble polymers such as [2-hydroxy-3- (trimethylammonio) propyl] hydroxyethylcellulose and the like, among the nitrogen-containing water-soluble polymers, cationized cellulose; vinylpyrrolidone and / or A water-soluble polymer obtained by polymerizing ethyleneimine as a main component is preferable, and a water-soluble polymer obtained by polymerizing vinylpyrrolidone and / or ethyleneimine as a main component is more preferable because it can be adjusted to an appropriate viscosity. .
In the water-soluble polymer obtained by polymerizing vinylpyrrolidone and / or ethyleneimine as a main component, the proportion of vinylpyrrolidone and / or ethyleneimine in all raw material monomers is 80% by mass or more, preferably 90% by mass or more, most A water-soluble polymer polymerized so as to be preferably 100% by mass is preferable. In terms of manufacturability, polyvinylpyrrolidone and polyethyleneimine are preferable.

Water-soluble polymers that do not contain nitrogen include polysaccharide polymers represented by xanthan gum, guar gum, starch, cyclodextrin, etc., cellulose polymers such as carboxymethylcellulose, hydroxyethylcellulose, polyacrylates and acrylic acids Examples thereof include synthetic polymers such as copolymers and styrene acid copolymers such as polystyrene salts.

In the component (a), a water-soluble polymer is preferable, and a nitrogen-containing water-soluble polymer is more preferable.
The mass average molecular weight of the water-soluble polymer (measured by gel permeation chromatography in terms of polystyrene, hereinafter the same) is 30000 or more, preferably 40000 or more from the viewpoint of reducing stickiness. The upper limit is not particularly limited, but is 2000000 or less in consideration of solubility and the like.

In the composition for suppressing urine odor, the amount of component (a) is preferably 0.01 to 10% by mass, more preferably 0.2 to 1% by mass, and further 0.2 to 0.5% by mass. is there.
By setting it to the lower limit value or more, the effect of suppressing urine odor is sufficiently obtained, and by setting the value to the upper limit value or less, problems such as dusting may occur on the surface of the wall, floor, etc. where the composition for suppressing urine odor is applied. Can be prevented.
In addition, it is preferable to leave (a) component to the extent which coat | covers application surfaces, such as a wall and a floor, from a viewpoint of urine odor suppression, and said compounding quantity is preferable also in this point.
(A) A component can be used 1 type or in mixture of 2 or more types.

"Water-soluble organic solvent"
The composition for suppressing urine odor preferably contains a water-soluble organic solvent (hereinafter sometimes referred to as component (b)). By mix | blending (b) component, the inhibitory effect of the odor component by (a) component increases, and the urine odor inhibitory effect improves.
As component (b), methanol, ethanol, n-propanol, isopropanol, n-butanol, s-butanol, t-butanol, ethylene glycol, diethylene glycol, triethylene glycol, propylene glycol, dipropylene glycol, tripropylene glycol, diethylene glycol Examples include monoethyl ether, diethylene glycol monopropyl ether, diethylene glycol monobutyl ether, glycerin, and alkyl glyceryl ether.
And the alcohol of 3 or less carbon atoms is preferable from the point which can reduce the remainder after application surfaces, such as a wall and a floor.
The preferred amount of component (b) in the composition for suppressing urine odor is 5 to 30% by mass, more preferably 10 to 20% by mass, and particularly preferably 15 to 20% by mass.
By setting it to the lower limit value or more, the odor suppressing effect can be improved and the urine odor suppressing composition can be applied more uniformly. Moreover, if it is below an upper limit, the influence on application surfaces, such as a wall and a floor, is small and preferable.
(B) A component can be used 1 type or in mixture of 2 or more types.

"Disinfectant"
It is preferable to add a disinfectant (hereinafter sometimes referred to as component (c)) to the composition for suppressing urine odor because both effects of suppressing urine odor and improving hygiene can be obtained.
(C) The component includes inorganic metal-containing components including inorganic metals such as silver, zinc, copper; isobutyl paraoxybenzoate, isopropyl paraoxybenzoate, ethyl paraoxybenzoate, methyl paraoxybenzoate, butyl paraoxybenzoate, paraoxybenzoate Propyl acid, phenol, 3-methyl-4-isopropylphenol, 2-isopropyl-5-methyl-phenol, orthophenylphenol, methylphenol, parachlorophenol, tribromophenol, 4-chloro-2- (phenylmethyl) phenol Aromatic sterilizers such as formaldehyde, orthophthalaldehyde, glutaraldehyde, cinnamaldehyde and the like; sorbic acid sterilizers such as sorbic acid and potassium sorbate; 5-chloro-2-methyl -4 Isothiazolones such as isothiazoline-3-one, 2-methyl-4-isothiazolin-3-one, 2-n-octyl-4-isothiazolin-3-one, 1,2-benzothiazolone, polyhexamethylene biguanidine hydrochloride, Biguanide disinfectants such as chlorhexidine gluconate and chlorhexidine hydrochloride; alkyldimethylbenzylammonium salt, dialkyldimethylammonium salt, alkyltrimethylammonium salt, octadecylamine acetate, alkyl (diaminoethyl) glycine hydrochloride, cetylpyridinium salt, Surfactant-type disinfectant such as dodecylpyridinium salt; and the like.

Among these, inorganic metal-containing components (sometimes sold as "antibacterial inorganic metal compounds") are preferable from the viewpoint of safety, etc., especially in a small amount, and silver-based inorganic antibacterial containing silver among them. Agents are preferred.
The inorganic metal-containing component is not limited as long as it has the ability to disinfect, for example, inorganic metal itself, inorganic metal oxide, hydrochloride, sulfate, nitrate, etc., zeolite, clay mineral, silica gel, etc. And silicates, zirconium phosphates, calcium phosphates and the like, and those supported on oxides such as silicon oxide, aluminum oxide, titanium oxide, zinc oxide, iron oxide, zirconium oxide, and the like.
Among these, a compound carrying an antibacterial inorganic metal oxide is desirable. In addition, in the component (c), in particular, when particles carrying an inorganic metal are used, the average particle diameter is 1 to 500 nm, preferably 1 to 100 nm. In such a range, it becomes possible for the particles to exist in a stable dispersed state, and since the particle diameter is small, it works advantageously from the viewpoint of contact with bacteria.
As such an inorganic metal-containing component, commercially available components can be used. For example, a silver-based inorganic antibacterial agent sold by Catalytic Kasei Kogyo Co., Ltd. under the trade names of ATOMYBALL-S, ATOMYBALL-L, and ATOMYBALL-UA can be used.

For example, in the case of a silver-based inorganic antibacterial agent containing silver, the blending amount of the component (c) in the composition for suppressing urine odor is 2 ppm or more, preferably 2 ppm to 500 ppm in terms of silver element concentration. The sterilization effect is improved by setting it to the lower limit value or more, and it can be prevented that the effect is saturated and economically disadvantageous by setting the upper limit value or less.
(C) A component can be used 1 type or in mixture of 2 or more types.

Other optional components Other optional components can be blended in the composition for suppressing urine odor.
For example, a surfactant can be appropriately blended from the viewpoint of imparting effects such as washing or foaming.
As the surfactant, an anionic surfactant, an amphoteric surfactant, a nonionic surfactant and the like can be used, and the surfactant is not limited to a specific one. A typical example is as follows.

(1) Anionic surfactant Alkyl sulfate, alkyl ether sulfate, alkylbenzene sulfonate, α-olefin sulfonate, fatty acid salt, alkyl ether carboxylate, alkyl phosphate, and the like. The counter ions (cations) of these anionic surfactants are alkali metal ions, alkaline earth metal ions, alkanolamine ions, ammonium ions, and the like.

(2) Amphoteric surfactants such as alkylcarboxybetaines and alkylsulfobetaines.

(3) Nonionic surfactant Polyoxyethylene alkyl ether, polyoxyethylene polyoxypropylene alkyl ether, polyoxyethylene alkylphenyl ether, fatty acid polyglycerol ester, fatty acid sucrose ester, fatty acid alkanolamide, alkylamine oxide, alkyl And amine oxides.

Moreover, an acid, an alkali agent, a chelating agent, etc. can be mix | blended as needed for the objective of washing assistance.
Examples of acids include benzoic acid, glycolic acid, diglycolic acid, gluconic acid, oxalic acid, malic acid, citric acid, glutaric acid, lactic acid, tartaric acid, acetic acid, paratoluenesulfonic acid, metaxylenesulfonic acid, hydroxyethanedi Examples include phosphonic acid, malonic acid, sulfamic acid, phosphoric acid, sulfuric acid, hydrochloric acid, and nitric acid.

  Examples of alkali agents include organic solvents such as monoethanolamine, diethanolamine, triethanolamine, monoisopropanolamine, N-methylethanolamine, N-ethylethanolanol, N-butylethanolamine, N-butylethanolamine, morpholine, etc. Amines; inorganic alkalis such as sodium hydroxide and potassium hydroxide; and the like.

  Examples of chelating agents include nitrilotriacetic acid, iminodiacetic acid, ethylenediaminetetraacetic acid, diethylenetriaminopentaacetic acid, N-hydroxyethylethylenediamineacetic acid, ethylenediaminetetrapropionic acetic acid, triethylenetetraminehexaacetic acid, ethylene glycol dietherdiaminetetraacetic acid, hydroxyethyl Aminocarboxylic acids such as iminodiacetic acid, cyclohexane-1,2-diaminetetraacetic acid and diencoric acid; ethane-1,1-diphosphonic acid, ethane-1,1,2-triphosphonic acid, 1-hydroxyethane-1,1 Diphosphonic acid and its derivatives, 1-hydroxyethane-1,1,2-triphosphonic acid, ethane-1,2-dicarboxy-1,2-diphosphonic acid, methanehydroxyphosphonic acid, aminotrimethylenephos Phosphonic acids such as phosphate, and the like.

Moreover, a fragrance | flavor can be mix | blended.
Although it does not specifically limit as a fragrance | flavor component, Specifically, Hydrocarbons, such as aliphatic hydrocarbon, terpene hydrocarbon, and aromatic hydrocarbon; Alcohols, such as aliphatic alcohol, terpene alcohol, and aromatic alcohol Ethers such as aliphatic ethers and aromatic ethers; oxides such as aliphatic oxides and terpene oxides; aldehydes such as aliphatic aldehydes, terpene aldehydes, hydrogenated aromatic aldehydes, thioaldehydes and aromatic aldehydes ; Ketones such as aliphatic ketones, terpene ketones, hydrogenated aromatic ketones, aliphatic cyclic ketones, non-benzene aromatic ketones, aromatic ketones; acetals; ketals; phenols; phenol ethers; fatty acids, terpenes Carboxylic acids, hydrogenated aromatic carboxylic acids, aromatic carboxylic acids, etc. Acid amides; lactones such as aliphatic lactones, macrocyclic lactones, terpene lactones, hydrogenated aromatic lactones, aromatic lactones; aliphatic esters, furan carboxylic acid esters, aliphatic cyclic carboxylic acid esters, cyclohexyl Esters such as carboxylic acid ester, terpene carboxylic acid ester, aromatic carboxylic acid ester; nitromusks; nitrile, amine, pyridines; quinolines; synthetic fragrances such as nitrogen-containing compounds such as pyrrole and indole; Natural fragrances.

  The composition for suppressing urine odor can be produced by, for example, dissolving the component (a) in a solvent. Examples of the solvent include water and the above component (b), but a mixed solvent of water and the component (b) is preferable. Moreover, (c) component and another arbitrary component are mix | blended, for example by throwing into a solvent with (a) component.

In the present invention, urine and urine are dried by applying the composition for suppressing urine odor to a range where urine adherence and drying can occur, so that urine and the component (a) in the composition for suppressing urine odor come into contact with each other. The odor generated in the process can be effectively and quickly suppressed. Moreover, it can process simply by methods, such as spraying.
Moreover, since it can process before bad odor generate | occur | produces from urine, in order to remove an unpleasant odor component effectively, there also exists an advantage that it can remove even if it does not put in a great amount of energy and chemical | medical agents.

  Hereinafter, the present invention will be described in more detail using examples, but the present invention is not limited to these examples. Further,% is “% by mass” unless otherwise specified.

[Raw materials used]
In performing the evaluation, samples were prepared using the following raw materials.
(Non-volatile odor control component)
Polyethyleneimine (mass average molecular weight 70000): manufactured by Nippon Shokubai Co., Ltd. (Epomin S-1000 (trade name))
Smectite: Kunimine (Smecton SA (trade name))
Polyvinylpyrrolidone: manufactured by Nippon Shokubai Co., Ltd. (mass average molecular weight 40000, polyvinylpyrrolidone K-30 (trade name))
Cationized cellulose: Leoguard GP (trade name) manufactured by Lion

(Other ingredients)
Ethanol: Reagent (Kanto Chemical)
Citric acid: manufactured by Fuso Chemical Industry Co., Ltd. Citric acid citrate Na: manufactured by Fuso Chemical Industries Co., Ltd. Purified sodium citrate L (trade name)
Nano-particle silver-based inorganic antibacterial agent: ATOMYBALL UA (trade name) manufactured by Catalyst Kasei
Monoethanolamine: Monoethanolamine MEA (trade name) manufactured by Mitsui Chemicals
LPB (lauric acid amidopropyl betaine): LPB-30 (trade name) manufactured by one company
Alcohol ethoxylate (EO5 (average number of moles of ethylene oxide added 5)): Lion (LEOX LC70) (trade name)
Carrageenan: Sankei Genuine Gel Carrageenan Type WR-712 (trade name)
TWEEN80 (polyethylene sorbitan oleate): Reagent (Kanto Chemical)

[Examples 1 to 10, Comparative Examples 1 to 4]
(Sample adjustment)
Using the compositions and water shown in Tables 1 and 2, samples were prepared as follows. The composition of the fragrance composition is shown in Table 3.
The preparation of the sample of Example 1 is as follows.
That is, 50 g of water, 10 g of ethanol, and 0.67 g of 80% aqueous solution of polyethyleneimine (Epomin S-1000 (trade name) manufactured by Nippon Shokubai Co., Ltd.) were dissolved in a 200 mL beaker and stirred for 5 minutes with a magnetic stirrer. Next, citric acid and sodium citrate were sequentially added and dissolved by stirring. Furthermore, what melt | dissolved the fragrance | flavor composition 10g in ethanol was added, the balance amount of water was finally added, and it stirred for 10 minutes, and was set as the sample 1.
Examples 2 to 10 and Comparative Examples 1 to 4 were similarly prepared.

The following evaluation was performed on these samples.
(Urine odor control effect test)
100 mL of urine collected from three adult men was mixed (hereinafter referred to as mixed urine). Using a mist spray container (Lion Co., Ltd. EFIN 500 Natural Set Water Container), 0.25 mL of mixed urine was dropped in a 450 mL glass bottle and left to dry overnight in a 40 ° C open system. 1 mL was sprayed so that the whole inside of the glass bottle was wet, and further left to dry in a 40 ° C. open system overnight. The next day, after sealing and sealing for 10 minutes, the lid was opened and the odor intensity in the bottle was evaluated by 5 panelists using a 6-step odor intensity display method. Evaluation was performed according to the evaluation criteria.
The evaluation results are shown in Tables 1 and 2.

・ Evaluation criteria ○: Effective (average of 6-level odor intensity: less than 2)
Δ: Slightly effective (6-level odor intensity average value: 2 or more and less than 4)
X: Almost no effect (average of 6-step odor intensity: 4 or more)

(Bacteria elimination test)
(1) Bacteria-removing test A stainless steel (2 cm diameter circular disc) plate coated with 0.01 mL of 10 ⁸ cfu / mL Escherichia coli solution was air-dried, coated with 0.1 mL of sample, and acted for 5 minutes. The number of bacteria was measured.
The TWEEN80 0.05% aqueous solution was determined according to the following criteria based on the difference in the number of bacteria when treated.
The determination results are shown in Tables 1 and 2.

・ Criteria ○: The number of bacteria decreases by LOG2 or more compared to TWEEN80 ×: The difference in the number of bacteria from TWEEN80 does not reach LOG2

  From the results of Tables 1 and 2, Examples 1 to 10 using the composition for suppressing urine odor containing a non-volatile odor suppressing component are compared with Comparative Examples 1 to 4 that did not use a non-volatile odor suppressing component. It was confirmed that the urine odor suppression effect was excellent. Moreover, when the nanoparticle silver-based inorganic antibacterial agent was blended, the sterilization effect was also good.

[Examples 11 to 13, Comparative Examples 5 to 6]
Compared with the case of spraying the composition for suppressing urine odor (Example) and the case of blending a non-volatile odor suppressing component in a gel sample and placing it in a container (Comparative Example), the urine odor depends on the application method. A test was conducted to determine whether the inhibitory effects were different.

(Production of sample used for evaluation of examples)
After adding 500 g of water, 6.77 g of polyethyleneimine 30% aqueous solution (Epomin S-1000 (trade name) manufactured by Nippon Shokubai Co., Ltd.), citric acid 0.5 g, and citric acid Na 0.5 g to a 1 L beaker, 5 with a magnetic stirrer Stir for minutes. Further, a balance amount of water was added to make the whole 100 g, and the mixture stirred for 10 minutes was used as a sample.

(Spray evaluation: Examples 11 to 13)
An odor evaluation model was prepared by dropping 0.25 mL of mixed urine in a 450 mL glass bottle and allowing it to stand and dry overnight in an open system at 40 ° C.
Next, 1 mL of the sample was sprayed on the evaluation model using a mist spraying device so that the inside of the bottle was evenly wetted, and then was left to dry overnight in a 40 ° C. open system. Close the lid the next day, seal it, leave it for 10 minutes, open the lid, and evaluate the odor intensity in the bottle with 5 panelists using the 6-step odor intensity display method. Judged. The results are shown in Table 4.

・ Evaluation criteria ○: Effective (average of 6-level odor intensity: less than 2)
Δ: Slightly effective (6-level odor intensity average value: 2 or more and less than 4)
X: Almost no effect (average of 6-step odor intensity: 4 or more)

In addition, the mist spraying apparatus used the following different containers for each Example, so that the particle size immediately after spraying was different. Table 4 shows the maximum measured value and the minimum measured value of the particle size immediately after spraying.
Fog generator used for evaluation and method of use Example 11: A sample was placed in an EFIN 500 natural set water container manufactured by Lion Corporation and sprayed in a normal manner.
Example 12: A sample was placed in a clean clean deodorant spray container of Lion Corporation, and sprayed by a normal operation.
Example 13: 50 g of a sample was sealed in a detergent container of a look window glass, 5 g of LPG (liquefied petroleum gas: manufactured by Daizo) was added, and sprayed into the evaluation model for 5 seconds.

The particle size was measured by the following method.
(Particle size measurement)
Measurement was performed under the following conditions using a particle size distribution analyzer LDSA-1300A (trade name) manufactured by Tohnichi Computer Applications.
Lens used: 300mm
Focal length: 30cm
Spray distance: 10cm
Analysis model formula: Rosin-Rammler formula

(Manufacture of gel sample used for comparative example)
Comparative example 5
3 g of carrageenan was added to 295 g of water in a 500 mL beaker and heated in an 80 ° C. water bath while stirring with a three-one motor. To this was added 2.0 g of a 30% aqueous solution of polyethyleneimine (Epomin S-1000 (trade name) manufactured by Nippon Shokubai Co., Ltd.), 0.15 g of citric acid, and 0.15 g of sodium citrate. After stirring for 30 minutes, the product was removed from the water bath. The sample was gelated by natural cooling.

Comparative Example 6
3 g of carrageenan was added to 295 g of water in a 500 mL beaker and heated in an 80 ° C. water bath while stirring with a three-one motor. This is shown in Table 3. Polyethyleneimine 30% aqueous solution (Epomin S-1000 (trade name) manufactured by Nippon Shokubai Co., Ltd.), citric acid 0.15 g, citric acid Na 0.15 g, alcohol ethoxylate (EO5) 15 g. After adding 3g of perfume composition C and stirring for 30 minutes, it was taken out from the water bath and naturally cooled to be a gel.

(Gel installation evaluation: Comparative Examples 5-6)
Into a 450 mL glass bottle, 0.25 mL of mixed urine was added dropwise and left to dry overnight in a 40 ° C. open system. 1 g of the gel sample prepared as described above was placed in a 10 mL glass beaker, and the glass bottle bottom center Installed.
Close the lid and let it stand for 10 minutes, then open the lid, and evaluate the odor intensity in the bottle by 5 panelists using the 6-step odor intensity display method. Was judged.
The results are shown in Table 4.

From the results shown in Table 4, it was confirmed that an effective effect was obtained by applying to the surface on which urine adhered and dried.
It was also confirmed that the effect was improved by setting the maximum particle size to 300 μm or less.

Claims (3)

  A method for suppressing urine odor, wherein a urine-derived odor is suppressed by applying a composition containing a non-volatile odor suppressing component to a range where urine adhesion and drying can occur.   The method for suppressing urine odor according to claim 1, wherein a composition containing a nitrogen-containing water-soluble polymer is used as a non-volatile odor suppressing component. The urine odor suppression method according to claim 1 or 2, wherein the composition containing the non-volatile odor suppression component is applied by spraying, and the maximum number of particles of the composition immediately after spraying. A method for suppressing urine odor using a method in which the particle diameter is 300 μm or less.