Method for preparing deodorant composition and deodorant composition prepared thereby

Abstract

The present invention relates to a method for preparing a deodorant composition and a deodorant composition prepared thereby, the method comprising a step of irradiating a composite material with radiation, the composite material comprising a hydroxide of an alkali metal, an oxide of a group 2 element, an oxide of a group 4 element, and an oxide of a group 13 element.

Description

Cross Reference to Related Applications

[0001] This application claims the benefit of priority based on Korean Patent Application No. 10-2023-0103418, filed on August 8, 2023, and all disclosures of the related Korean patent application are incorporated herein as part of the present specification. TECHNICAL FIELD

[0002] The present invention relates to a method for preparing a deodorant composition and a deodorant composition prepared therefrom. BACKGROUND

[0003] Odor-causing substances (e.g., formaldehyde, toluene, xylene, ammonia, and benzene) are generated in daily life or in related industrial fields (e.g., livestock farms, pig farms, or poultry farms). Exposure to such substances can cause various side effects, such as mild headache, convulsions, or death due to pulmonary edema, depending on the degree of exposure.

[0004] Meanwhile, in order to remove the above odor-causing substances, various types of deodorants have been generally proposed. For example, inorganic oxide complexes including hydroxides of alkali metals, oxides of Group 2 elements, oxides of Group 4 elements, and oxides of Group 13 elements have been suggested to remove various odor-causing substances including formaldehyde, toluene, xylene, ammonia, and benzene.

[0005] However, the above conventional inorganic oxide complexes exhibit an insignificant removal rate, particularly for odor-causing substances including sulfur-based compounds (e.g., hydrogen sulfide, methyl mercaptan, dimethyl sulfide, or dimethyl disulfide). In addition, long-term use of the conventional inorganic oxide complexes is particularly difficult (e.g., continuous use for at least one year is difficult).

[0006] Accordingly, there is an increasing need for a deodorant composition that exhibits an excellent removal rate for sulfur-based compounds, has excellent sustainability, and has excellent economic efficiency. SUMMARY

[0007] TECHNICAL PROBLEM

[0008] One aspect of the present disclosure provides a method for preparing a deodorant composition and a deodorant composition prepared therefrom, which is capable of exhibiting an excellent removal rate for odor-causing substances, particularly odor-causing substances including sulfur-based compounds.

[0009] TECHNICAL SOLUTION

[0010] According to one aspect of the present disclosure, there is provided a method for preparing a deodorant composition and a deodorant composition prepared thereby, the method comprising irradiating radiation onto a complex comprising a hydroxide of an alkali metal, an oxide of a Group 2 element, an oxide of a Group 4 element, and an oxide of a Group 13 element.

[0011] Advantages

[0012] The deodorant composition according to the present invention can effectively remove malodor-causing substances, particularly sulfur-based compounds, from the air. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1a and Figure 1b is a graph showing the removal rate of hydrogen sulfide over time for the deodorant compositions of Examples 1-6, the deodorant compositions of Examples 2-6, and the complex of Comparative Example 1;

[0014] Figure 2a and Figure 2b is a graph showing the removal rate of methyl mercaptan over time for the deodorant compositions of Examples 1-6, the deodorant compositions of Examples 2-6, and the complex of Comparative Example 1;

[0015] Figure 3a and Figure 3b is a graph showing the removal rate of dimethyl sulfide over time for the deodorant compositions of Examples 1-6, the deodorant compositions of Examples 2-6, and the complex of Comparative Example 1;

[0016] Figure 4a and Figure 4b is a graph showing the removal rate of dimethyl sulfide over time for the deodorant compositions of Examples 1-6, the deodorant compositions of Examples 2-6, and the complex of Comparative Example 1;

[0017] Figure 5 is a graph showing the removal rate of hydrogen sulfide according to the irradiation dose of gamma rays;

[0018] Figure 6 is a graph showing the removal rate of methyl mercaptan according to the irradiation dose of gamma rays;

[0019] Figure 7 is a graph showing the removal rate of dimethyl sulfide according to the irradiation dose of gamma rays;

[0020] Figure 8 is a graph showing the removal rate of dimethyl sulfide according to the irradiation dose of gamma rays;

[0021] Figure 9is a graph showing the radical content in the deodorant composition according to the irradiation dose of the electron beam, measured by a radical measurement method using pyrogallol as a substrate; and

[0022] Figure 10 is a graph showing the radical content in the deodorant composition according to the irradiation dose of the gamma ray, measured by a radical measurement method using pyrogallol as a substrate. DETAILED DESCRIPTION

[0023] The present disclosure relates to a method for preparing a deodorant composition and a deodorant prepared therefrom.

[0024] Method of preparing a deodorant composition

[0025] The method for preparing a deodorant composition of the present disclosure includes a step of irradiating radiation onto a complex to remove malodor-causing substances in the air.

[0026] Complex

[0027] The complex includes a hydroxide of an alkali metal, an oxide of a Group 2 element, an oxide of a Group 4 element, and an oxide of a Group 13 element.

[0028] The type of the hydroxide of the alkali is not particularly limited, but can include at least one hydroxide selected from the group consisting of lithium hydroxide (Li), sodium hydroxide (Na), and potassium hydroxide (K).

[0029] The type of the oxide of the Group 2 element is not particularly limited, but can include at least one selected from the group consisting of magnesium (Mg) oxide and calcium (Ca) oxide.

[0030] The type of the oxide of the Group 4 element is not particularly limited, but can include at least one selected from the group consisting of titanium (Ti) oxide and zirconium (Zr) oxide.

[0031] The type of the oxide of the Group 13 element is not particularly limited, but can include at least one selected from the group consisting of boron (B) oxide, aluminum (Al) oxide, and gallium (Ga) oxide.

[0032] According to embodiments, the hydroxide of an alkali metal can be NaOH, the oxide of a Group 2 element can be MgO, the oxide of a Group 4 element can be TiO2, and the oxide of a Group 13 element can be Al2O3. However, this is provided for illustrative purposes only. The type of material included in the complex according to the present disclosure is not limited thereto. The complex according to the present disclosure should be interpreted to include a variety of types of materials exhibiting excellent characteristics of removing the above-mentioned malodor-causing substances.

[0033] According to embodiments, the complex can include 50 to 300 parts by weight of the hydroxide of an alkali metal, 10 to 100 parts by weight of the oxide of a Group 4 element, and 10 to 200 parts by weight of the oxide of a Group 13 element, based on 100 parts by weight of the oxide of a Group 2 element. However, the content of the materials included in the complex according to the present disclosure is not limited to the above-mentioned numerical ranges. According to the present disclosure, the content of each material included in the complex can be interpreted to vary within a range exhibiting excellent characteristics of removing the above-mentioned malodor-causing substances.

[0034] According to embodiments, the complex can further include an oxide other than the hydroxide of an alkali metal, the oxide of a Group 2 element, the oxide of a Group 4 element, and the oxide of a Group 13 element, to improve the characteristics of removing malodor-causing substances. For example, the complex can further include at least one selected from the group consisting of a silicon (Si) oxide and an iron (Fe) oxide.

[0035] Each of the hydroxide of an alkali metal, the oxide of a Group 2 element, the oxide of a Group 4 element, and the oxide of a Group 13 element in the complex can have excellent characteristics of removing malodor-causing substances.

[0036] Specifically, each of the hydroxide of an alkali metal, the oxide of a Group 2 element, the oxide of a Group 13 element, and the oxide of a Group 4 element in the complex can absorb moisture and a hydroxyl-containing compound that come into contact with the composition.

[0037] Further, the oxide of a Group 13 element in the complex can strongly absorb moisture and a hydroxyl-containing compound into the complex, thereby preventing the moisture and the hydroxyl-containing compound from being released into the air again. In addition to the moisture and the hydroxyl-containing compound, the oxide of a Group 4 element can adsorb malodor-causing compounds such as a carbonyl-containing compound (e.g., formaldehyde), an aromatic ring-containing compound (e.g., toluene, xylene, or benzene), and an amino compound.

[0038] Further, the hydroxide of the alkali metal in the complex can provide alkali metal ions and hydroxyl groups for oxidizing or reducing various malodor-causing compounds adsorbed into the complex, as well as oxygen in the air continuously introduced into the complex. Thus, the hydroxide of the alkali metal can effectively decompose various malodor-causing compounds adsorbed onto the complex, and can prevent various malodor-causing compounds adsorbed onto the complex from being re-emitted into the air.

[0039] Meanwhile, the complex can have a feature of removing sulfur-based compounds (e.g., hydrogen sulfide (H2S)) among malodor-causing compounds. For example, the oxide (e.g., oxide of Group 13 element) and the hydroxyl group (e.g., hydroxyl group in the alkali metal hydroxide) in the complex are presumed to oxidize hydrogen sulfide into its radical (H-S·) together with oxygen in the air introduced into the complex. The radicals derived from hydrogen sulfide react with each other to form disulfide (H2S2), which reduces hydrogen sulfide.

[0040] Irradiation of radiation

[0041] The inventors of the present disclosure have found, through repeated research, that when radiation is irradiated onto a complex to form a deodorant composition, the removal rate of malodor-causing compounds, particularly malodor-causing compounds including sulfur-based compounds, by the deodorant composition formed is significantly improved compared to the removal rate of the complex with respect to malodor-causing compounds. It is presumed that the result is due to the fact that when radiation is irradiated onto the complex, radicals (e.g., hydroxyl radicals can be formed from the hydroxyl group contained in the alkali metal hydroxide in the complex) having excellent reactivity with the above-described sulfur-based compounds can be formed in the complex, and the complex can serve as a radical trap for stably maintaining such radicals.

[0042] According to an embodiment, the radiation can be at least one selected from the group consisting of an electron beam, a gamma ray, an ultraviolet ray, an alpha ray, a beta ray, a neutron ray, and an X-ray. Preferably, the radiation can be an electron beam or a gamma ray, and more preferably, the radiation can be a gamma ray. In this case, when the radiation satisfies the above-described conditions, the radiation is irradiated into the complex to obtain a deodorant composition exhibiting excellent characteristics of removing malodor-causing compounds, particularly malodor-causing compounds including sulfur-based compounds.

[0043] According to embodiments, the irradiation dose of the radiation can be 0.1 to 15 kGy, 0.2 to 10 kGy, 0.5 to 8.5 kGy, 1.5 to 7.0 kGy, 2.3 to 5.5 kGy, 2.5 to 5.0 kGy, or 2.8 to 4.3 kGy. In this case, when the irradiation dose of the radiation satisfies the above numerical range, the deodorant composition can have an excellent removal rate with respect to malodor-causing compounds, particularly malodor-causing compounds including sulfur-based compounds, while ensuring sufficient economic efficiency in terms of the cost of radiation irradiation.

[0044] As described above, when the deodorant composition is formed by irradiating radiation onto the complex, the formed deodorant composition can have an excellent removal rate with respect to malodor-causing compounds. Particularly, the deodorant composition can have a significantly excellent removal rate with respect to malodor-causing compounds including sulfur-based compounds. For example, the deodorant composition can have a significantly excellent removal rate with respect to sulfur-based compounds designated as specific malodor substances in the Odor Prevention Act, for example, including at least one selected from the group consisting of hydrogen sulfide, methyl mercaptan, dimethyl sulfide, and dimethyl disulfide. Accordingly, the deodorant composition can be used as a desulfurization deodorant composition for effectively removing sulfur-based compounds.

[0045] Deodorant composition

[0046] The deodorant composition according to the present disclosure is prepared by a method of preparing the deodorant composition, and can be formed by irradiating radiation onto a complex. In the following description, the repeated content of the complex and the radiation described in the method of preparing the deodorant composition will be omitted.

[0047] The deodorant composition can include a complex, and can include radicals (for example, hydroxyl radicals) formed by irradiation of radiation. Accordingly, the deodorant composition can have an excellent removal rate with respect to malodor-causing compounds derived from the above-described radicals, particularly, deodorant compositions including sulfur-based compounds.

[0048] The radicals can include various types of radicals formed by radiolysis of various substances in the complex due to irradiation of radiation. For example, the radicals can include various types of radicals formed by radiolysis of at least one selected from the group consisting of hydroxides of alkali metals, oxides of Group 2 elements, oxides of Group 4 elements, and oxides of Group 13 elements in the complex. As another example, the radicals can include various types of radicals formed by radiolysis of water or gas trapped in the complex. In this case, the complex can be used as a radical-trapping agent for stably maintaining various types of radicals. Accordingly, the radicals can be stably maintained in the deodorant composition.

[0049] According to embodiments, the radical can include a hydroxyl radical formed by irradiating radiation onto a hydroxyl group included in the hydroxide of the alkali metal in the complex.

[0050] Meanwhile, as described above, the deodorant composition can be used for a desulfurization deodorant composition to effectively remove sulfur compounds (in particular, sulfur compounds designated as specific malodorous substances under the odor control act).

[0051] Hereinafter, the present disclosure will be described in detail through embodiments. However, these embodiments are provided only for illustrative purposes, and the scope of the present disclosure is not limited to the embodiments in any meaning.

[0052] Examples 1-1 to 1-9: Deodorant compositions prepared by irradiating a complex with electron beams

[0053] 1 g of a complex (CAION provided by WNC Co., Ltd.) containing a hydroxide of an alkali metal, an oxide of a Group 2 element, an oxide of a Group 4 element, and an oxide of a Group 13 element was placed in a 15 mL conical tube, and then irradiated with an electron beam (irradiation dose; see Table 1 below).

[0054] In this case, under the conditions of an energy intensity of 2.5 MeV and an acceleration current of 5 mA, the electron beam was irradiated by using an electron beam accelerator (Model ELV-8; 2.5 MeV; Eb-Tech, Korea) of the Advanced Radiation Research Institute. The absorbed dose was measured using a B3 film dosimeter.

[0055] [Table 1]

[0056]

[0057] Examples 2-1 to 2-9: Deodorant compositions prepared by irradiating a complex with gamma rays

[0058] 1 g of a complex (CAION provided by WNC Co., Ltd.) containing a hydroxide of an alkali metal, an oxide of a Group 2 element, an oxide of a Group 4 element, and an oxide of a Group 13 element was placed in a 15 mL conical tube, and then irradiated with a gamma ray (irradiation dose; see Table 2 below).

[0059] Gamma-ray irradiation was performed at the High Level Radiation Institute (Point Source AECL, IR-79, MDS Nordion International Co. Ltd., Ottawa, ON, Canada) of the Korea Atomic Energy Research Institute (Jeongeup) using a cobalt-60 gamma-ray irradiation device having a source intensity of 170,000 Ci, and the absorbed dose was verified using an alanine dosimeter (5 mm, Bruker Instruments, Rheinsteten, Germany) which was standardized according to the specification of the International Atomic Energy Agency (IAEA).

[0060] Table 2

[0061]

[0062] Comparative Example 1: Complex not irradiated with radiation

[0063] A complex including a hydroxide of an alkali metal, an oxide of a Group 2 element, an oxide of a Group 4 element, and an oxide of a Group 13 element (CAION provided by WNC Co., Ltd.) was not subjected to any irradiation.

[0064] Experimental Example 1: Determination of removal rate of sulfur-based compounds over time

[0065] The removal rates of four kinds of sulfur compounds (hydrogen sulfide, methyl mercaptan, dimethyl sulfide, and dimethyl disulfide) among the prescribed malodor substances were measured by using the deodorant compositions of Examples 1-6 and Example 2-6 and the complex of Comparative Example 1.

[0066] Experimental Example 1-1: Determination of removal rate of hydrogen sulfide over time

[0067] The deodorant compositions of Example 1-6, the deodorant composition of Example 2-6, and the complex of Comparative Example 1, and hydrogen sulfide gas were injected into a 3L Tedlar bag (polyvinyl fluoride provided by Top Trading ENG Co., Ltd.) and stirred by a stirrer (IS-971R, provided by J-Tech Co., Ltd.).

[0068] At 0 minutes after stirring (i.e., immediately after stirring), 2 minutes, 4 minutes, 6 minutes, or 10 minutes after stirring, 300 mL of gas was extracted from the Tedlar bag using a gas syringe and injected into a clean 500 mL Tedlar bag to prepare a sample. Then, the concentration of the residual gas of the sample was measured, and the measurement results are shown in Tables 2, 3, 4, and 5. Figure 1a and Figure 1b

[0069] ​In this case, the concentration of the residual gas of hydrogen sulfide gas was analyzed using GC-MS (GC-MS-QP 2010 Ultra of Shimadzu), using HP-1 (5 μm x 60 mm x 0.32 mm; Agilent Technologies Inc.) as a column. The temperature of the oven was stabilized at 80°C for 5 minutes, increased at a rate of 10°C / minute for 12 minutes, and then analyzed at 200°C for 7 minutes. Helium was used for the carrier gas, and the flow rate was set to 1.5 mL / min.

[0070] Referring to Figure 1a and Figure 1b The deodorant compositions of Examples 1-6 and 2-6 effectively removed hydrogen sulfide compared to the complex of Comparative Example 1. In particular, the deodorant composition of Example 2-6 showed a removal rate of 99.5% for hydrogen sulfide within 10 minutes.

[0071] Experimental Example 1-2: Determination of removal rate of methyl mercaptan over time

[0072] When compared to Experimental Example 1-1, except that methyl mercaptan gas was used instead of hydrogen sulfide gas, the experiment was performed in the same manner as Experimental Example 1-1, and the results are shown in Figure 2a and Figure 2b

[0073] Referring to Figure 2a and Figure 2b The deodorant compositions of Examples 1-6 and 2-6 effectively removed methyl mercaptan compared to the complex of Comparative Example 1. In particular, the deodorant composition of Example 2-6 showed a removal rate of 89.4% for hydrogen sulfide within 10 minutes.

[0074] Experimental Example 1-3: Determination of removal rate of dimethyl sulfide over time

[0075] When compared to Experimental Example 1-1, except that dimethyl sulfide was used instead of hydrogen sulfide gas, the experiment was performed in the same manner as Experimental Example 1-1, and the results are shown in Figure 3a and Figure 3b

[0076] Referring to Figure 3a and Figure 3b The deodorant compositions of Examples 1-6 and 2-6 effectively removed dimethyl sulfide compared to the complex of Comparative Example 1. In particular, the deodorant composition of Example 2-6 showed a removal rate of 92.7% for hydrogen sulfide within 10 minutes.

[0077] Experimental Example 1-4: Determination of removal rate of dimethyl disulfide over time

[0078] ​​When compared with Experimental Example 1-1, except that dimethyl disulfide gas was used instead of hydrogen sulfide gas, the experiment was performed in the same manner as Experimental Example 1-1, and the results are shown in Figure 4a and Figure 4b .

[0079] Referring to Figure 4a and Figure 4b , the deodorant compositions of Example 1-6 and Example 2-6 effectively removed dimethyl disulfide compared to the complex of Comparative Example 1. In particular, the deodorant composition of Example 2-6 showed a removal rate of 87.7% for dimethyl disulfide within 10 minutes.

[0080] Experimental Example 2: Determination of removal rate of sulfur-based compounds as a function of irradiation dose of gamma rays

[0081] Experimental Example 2-1: Determination of removal rate of hydrogen sulfide over time as a function of irradiation dose of gamma rays

[0082] The deodorant composition of Example 2-1, the deodorant composition of Example 2-9, and hydrogen sulfide gas were injected into a 3L Tedlar bag (polyfluoroethylene provided by Top Trading ENG Co., Ltd.) and stirred by a stirrer (IS-971R, provided by Jeio-Tech Co., Ltd.).

[0083] When stirring was passed for 10 minutes, 300mL of gas was extracted from the Tedlar bag using a gas syringe and injected into a clean 500mL Tedlar bag to prepare a sample. Then, the concentration of the residual gas of the sample was measured, and the measurement results are shown in Figure 5 .

[0084] In this case, the concentration of the residual gas of the hydrogen sulfide gas was analyzed using a GC-MS (GC-MS-QP 2010 Ultra of Shimadzu) using HP-1 (5μm x 60mm x 0.32mm; Agilent Technologies Inc.) as a chromatographic column. The temperature of the oven was stabilized to 80℃ for 5 minutes, increased at a rate of 10℃ / minute for 12 minutes, and then analyzed at 200℃ for 7 minutes. Helium was used for the carrier gas, and the flow rate was set to 1.5mL / min.

[0085] Referring to Figure 5 , it can be confirmed that the increase in the irradiation dose of gamma rays significantly increases the removal rate of the deodorant composition for hydrogen sulfide (Examples 2-1 to 2-6), then maintains the removal rate of the deodorant composition for hydrogen sulfide at a certain level (Examples 2-6 to 2-9), and it can be confirmed that the most excellent hydrogen sulfide removal rate is exhibited when the gamma rays are irradiated at an irradiation dose of 3kGy (Example 2-6).

[0086] Experimental Example 2-2: Determination of removal rate of methyl mercaptan over time as a function of irradiation dose of gamma rays

[0087] When compared with Experimental Example 2-1, except that methyl mercaptan gas was used instead of hydrogen sulfide gas, the experiment was performed in the same manner as Experimental Example 2-1, and the results are shown in Table 2-1. Figure 6

[0088] Referring to Table 2-1, it can be confirmed that the increase in the irradiation dose of gamma rays significantly increases the removal rate of the deodorant composition for methyl mercaptan (Examples 2-1 to 2-6), and then maintains the removal rate of the deodorant composition for methyl mercaptan at a certain level (Examples 2-6 to 2-9), and it can be confirmed that the most excellent methyl mercaptan removal rate is exhibited when the gamma rays are irradiated at an irradiation dose of 3 kGy (Example 2-6). Figure 6

[0089] Experimental Example 2-3: Determination of removal rate of dimethyl sulfide over time as a function of irradiation dose of gamma rays When compared with Experimental Example 2-1, except that dimethyl sulfide gas was used instead of hydrogen sulfide gas, the experiment was performed in the same manner as Experimental Example 2-1, and the results are shown in Table 2-2.

[0090] Figure 7

[0091] Referring to Table 2-2, it can be confirmed that the increase in the irradiation dose of gamma rays significantly increases the removal rate of the deodorant composition for dimethyl sulfide (Examples 2-1 to 2-6), and then maintains the removal rate of the deodorant composition for dimethyl sulfide at a certain level (Examples 2-6 to 2-9), and it can be confirmed that the most excellent dimethyl sulfide removal rate is exhibited when the gamma rays are irradiated at an irradiation dose of 3 kGy (Example 2-6). Figure 7

[0092] Experimental Example 2-4: Determination of removal rate of dimethyl disulfide over time as a function of irradiation dose of gamma rays When compared with Experimental Example 2-1, except that dimethyl disulfide gas was used instead of hydrogen sulfide gas, the experiment was performed in the same manner as Experimental Example 2-1, and the results are shown in Table 2-3.

[0093] Figure 8

[0094] Referring to Table 2-3, it can be confirmed that the increase in the irradiation dose of gamma rays significantly increases the removal rate of the deodorant composition for dimethyl disulfide (Examples 2-1 to 2-6), and then maintains the removal rate of the deodorant composition for dimethyl disulfide at a certain level (Examples 2-6 to 2-9), and it can be confirmed that the most excellent dimethyl disulfide removal rate is exhibited when the gamma rays are irradiated at an irradiation dose of 3 kGy (Example 2-6). Figure 8

[0095] Experimental Example 3: Measurement of radical concentration in a deodorant composition based on irradiation dose of radiation

[0096] ​​​​​​After irradiating radiation onto the deodorant compositions of the examples and leaving the deodorant compositions for two weeks, a radical measurement method using pyrogallol as a substrate was performed to measure the concentration of radicals in the deodorant compositions.

[0097] In this case, pyrogallol having a maximum UV absorbance at 280 nm reacts with radicals, so that pyrogallol is converted into a material having a maximum UV absorbance at 360 nm. In this case, the optical density (o.d.) of the material after conversion can be measured to quantify the amount of radicals.

[0098] Experimental Example 3-1: Measurement of radical concentration in a deodorant composition based on irradiation dose of electron beams

[0099] 1 mL each of the deodorant compositions of Examples 1-2, 1-4, 1-6, 1-8, and 1-9, and 1 mL of the complex of Comparative Example 1 were reacted with 1 mg of pyrogallol at room temperature for 5 hours to initiate a radical reaction. Then, the product was introduced into a quartz cell having a volume of 1 mL. Then, the optical density was measured using an ELISA reader (Infinite F200; Tecan Austria GmBH; Grodig; Austria) in the wavelength range of 300 nm to 500 nm. The results are shown in Figure 9

[0100] Referring to Figure 9 It can be confirmed that the content of the radical reaction product increases as the irradiation dose of the electron beam increases (Comparative Example 1, Examples 1-2, 1-4, and 1-6), and it can be confirmed that the content of the radical reaction product is substantially consistent when the irradiation dose of the electron beam reaches at least a certain level (Examples 1-6, 1-8, and 1-9). In other words, it can be confirmed that the content of radicals in the deodorant composition generally also increases as the irradiation dose of the electron beam irradiated on the complex increases.

[0101] Experimental Example 3-2: Measurement of radical concentration in a deodorant composition based on irradiation dose of gamma rays

[0102] When the experiment was performed in the same manner as Experimental Example 3-1 except that 1 mL of the deodorant composition of Example 2-2, 2-4, 2-6, 2-8, or 2-9 was used instead of 1 mL of the deodorant composition of Example 1-2, 1-4, 1-6, 1-8, or 1-9, when compared with Experimental Example 3-1, the results are shown in Figure 10

[0103] Referring to Figure 10 ​​It can be confirmed that the content of the radical reaction product increases as the irradiation dose of the gamma rays increases (Comparative Example 1, Examples 2-2, 2-4, and 2-6), and it can be confirmed that the content of the radical reaction product is substantially uniform when the irradiation dose of the gamma rays is at least a certain level (Examples 2-6, 2-8, and 2-9). In other words, it can be confirmed that the content of the radical in the deodorant composition generally increases as the irradiation dose of the gamma rays irradiated on the complex increases.

[0104] Experimental Example 4: Measurement of radical concentration in a deodorant composition as a function of standing time after irradiation of radiation

[0105] Experimental Example 4-1: Measurement of radical concentration in a deodorant composition as a function of standing time after irradiation of electron beams

[0106] After storing the deodorant compositions of Examples 1-6 for 0 days (i.e., immediately after preparing the deodorant compositions of Examples 1-6), 10 days, 20 days, and 30 days, the radical concentration was measured using the ESR spectrometer. In addition, after storing the deodorant composition of Comparative Example 1 for 0 days (i.e., immediately after preparing the deodorant composition of Comparative Example 1), 10 days, 20 days, and 30 days, the radical concentration was measured using the ESR device.

[0107] Specifically, under the conditions of a power of 1 mW, a modulation frequency of 9.65 GHz, and a magnetic field of 335 ± 8 mT at room temperature, the ESR spectrum was measured for a sample of the deodorant composition of Examples 1-6 or the complex of Comparative Example 1 using a quartz ESR tube (5 mm x 200 mm) and an ESR spectrometer (JES-X310 ESR spectrometer; JEOL; Japan), and the radical concentration obtained from the result is shown in Table 3 below.

[0108] [Table 3]

[0109]

[0110] Referring to FIG. 3, the deodorant compositions of Examples 1-6 include a certain concentration of radicals compared to the complex of Comparative Example 1 which was not irradiated with radiation. In this case, it can be confirmed that the radical concentration in the deodorant compositions of Examples 1-6 remains constant regardless of the standing time of the deodorant compositions of Examples 1-6. In other words, it can be confirmed that the radicals in the deodorant compositions of Examples 1-6 formed by the irradiation of the electron beam are maintained stably (the deodorant compositions are effectively used as a radical trapping agent).

[0111] Experimental Example 4-2: Measurement of radical concentration in a deodorant composition as a function of standing time after irradiation of gamma rays

[0112] When compared to Experimental Example 4-1, except that the deodorant composition of Example 2-6 was used instead of the deodorant composition of Example 1-6, the experiment was performed in the same manner as Experimental Example 4-1,

[0113] [Table 4]

[0114]

[0115] Referring to FIG. 4, compared to the complex of Comparative Example 1 which was not irradiated with radiation, the deodorant compositions of Examples 2-6 include a specific concentration of radicals. In this case, it can be confirmed that the radical concentration in the deodorant compositions of Examples 2-6 is generally constant regardless of the standing time of the deodorant compositions of Examples 2-6. In other words, it can be confirmed that the radicals in the deodorant compositions of Examples 2-6 formed by irradiation with gamma rays are maintained stably (the deodorant compositions are effectively used as radical scavengers).

Claims

1. A method for preparing a deodorant composition, the method comprising: irradiating radiation onto a complex including a hydroxide of an alkali metal, an oxide of a Group 2 element, an oxide of a Group 4 element, and an oxide of a Group 13 element.

2. The method of claim 1, wherein, The deodorant composition is a desulfurization deodorant composition for removing sulfur-based compounds.

3. The method of claim 2, wherein, The sulfur-based compounds include at least one selected from the group consisting of hydrogen sulfide, methyl mercaptan, dimethyl sulfide, and dimethyl disulfide.

4. The method of claim 1, wherein, The radiation is at least one selected from the group consisting of an electron beam, a gamma ray, an ultraviolet ray, an alpha ray, a beta ray, a neutron ray, and an X-ray.

5. The method of claim 1, wherein, The irradiation dose of the radiation is 0.1 kGy to 15 kGy.

6. The method of claim 1, wherein, The hydroxide of the alkali metal includes at least one hydroxide selected from lithium (Li) hydroxide, sodium (Na) hydroxide, and potassium (K) hydroxide, wherein the oxide of the Group 2 element includes at least one oxide selected from magnesium (Mg) oxide and calcium (Ca) oxide, wherein the oxide of the Group 4 element includes at least one oxide selected from titanium (Ti) oxide and zirconium (Zr) oxide, and wherein the oxide of the Group 13 element includes at least one oxide selected from boron (B) oxide, aluminum (Al) oxide, and gallium (Ga) oxide.

7. The method of claim 1, wherein, The complex further includes at least one oxide selected from the group consisting of silicon (Si) oxide and iron (Fe) oxide.

8. The method of claim 1, wherein, The hydroxide of the alkali metal is NaOH, wherein the oxide of the Group 2 element is MgO, wherein the oxide of the Group 4 element is TiO2, and wherein the oxide of the Group 13 element is AI2O3.

9. The method of claim 1, wherein, The complex includes 50 to 300 parts by weight of the hydroxide of the alkali metal, 10 to 100 parts by weight of the oxide of the Group 4 element, and 10 to 200 parts by weight of the oxide of the Group 13 element, based on 100 parts by weight of the oxide of the Group 2 element.

10. A deodorant composition, comprising: a complex including a hydroxide of an alkali metal, an oxide of a Group 2 element, an oxide of a Group 4 element, and an oxide of a Group 13 element, and wherein The composition includes a radical.

11. The deodorant composition according to claim 10, wherein, The deodorant composition is a desulfurization deodorant composition for removing sulfur-based compounds.

12. The deodorant composition according to claim 11, wherein, The sulfur-based compounds include at least one selected from the group consisting of hydrogen sulfide, methyl mercaptan, dimethyl sulfide, and dimethyl disulfide.

13. The deodorant composition according to claim 10, wherein, The radical is included in at least one selected from the group consisting of the hydroxide of the alkali metal, the oxide of the Group 2 element, the oxide of the Group 4 element, and the oxide of the Group 13 element.

14. The deodorant composition according to claim 13, wherein, The radical includes a hydroxyl radical included in the hydroxide of the alkali metal.

15. The deodorant composition according to claim 10, wherein, The hydroxide of the alkali metal includes at least one hydroxide selected from the group consisting of lithium (Li) hydroxide, sodium (Na) hydroxide, and potassium (K) hydroxide, wherein the oxide of the Group 2 element includes at least one oxide selected from magnesium (Mg) oxide and calcium (Ca) oxide, The oxide of the Group 4 element includes at least one oxide selected from titanium (Ti) oxide and zirconium (Zr) oxide, and The oxide of the Group 13 element includes at least one oxide selected from boron (B) oxide, aluminum (Al) oxide, and gallium (Ga) oxide.

16. The deodorant composition according to claim 10, wherein, The complex further includes at least one oxide selected from the group consisting of silicon (Si) oxide and iron (Fe) oxide.

17. The deodorant composition according to claim 10, wherein, The hydroxide of the alkali metal is NaOH, The oxide of the Group 2 element is MgO, The oxide of the Group 13 element is Al2O3, and The oxide of the Group 4 element is TiO2.

18. The deodorant composition according to claim 10, wherein, The complex includes, based on 100 parts by weight of the oxide of the Group 2 element, 50 to 300 parts by weight of the hydroxide of the alkali metal, 10 to 100 parts by weight of the oxide of the Group 4 element, and 10 to 200 parts by weight of the oxide of the Group 13 element.

19. The deodorant composition according to claim 10, wherein, The deodorant composition has a powder form, a film form, or a block form.

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