KR100765426B1 - Antimicrobial and Deodorant Aqueous Composition for a Fabric Deodorizing agent Comprising Inorganic Metallic Complex Compound of NanoSilver Supported on Titanium Dioxide - Google Patents

Abstract

The present invention provides an aqueous composition for fiber deodorant of clothing and textile products, wherein the nano silver comprises an inorganic metal complex compound supported on the surface of titanium dioxide. In addition, the composition additionally includes a deodorant or a scent, so that it is possible to efficiently achieve the removal of the cause of the malodor in the fiber, masking the malodor and removing the malodor causing substance at the same time.

Nano silver, titanium dioxide, inorganic metal complex, deodorant, fragrance

Description

Antimicrobial and Deodorant Aqueous Composition for a Fabric Deodorizing agent Comprising Inorganic Metallic Complex Compound of NanoSilver Supported on Titanium Dioxide}

The present invention relates to an aqueous composition for fiber deodorant with sterilization / antibacterial and deodorant function, in which nanosilver contains an inorganic metal complex, a deodorant and an aroma supported on a surface of titanium dioxide.

Odor removal methods include traditional methods such as chemical removal, physical chemical removal, biochemical removal, and sensory deodorization.

The chemical removal method is a method of transforming odorous substances into decomposed or odorless compounds by acting highly reactive substances to odorous components by using chemical reactions such as neutralization, addition, polymerization, oxidation, reduction, and hydrolysis. To remove it.

The physicochemical removal method is a compound having strong adsorption and trapping ability such as activated carbon, silica, cyclodextrin, etc., which adsorbs or collects malodorous components on the surface, absorption by high boiling point solvent, surfactant, etc., liquid paraffin, higher alcohol, synthetic resin, etc. It is a method of removing odorous substances by coating using.

Biochemical removal method is a method of removing odor by blocking the generation of odor components by bacteria by sterilizing action by a cationic surfactant, a fungicide or the like or by decomposing organic acids as odor components using digestive enzymes, bacteria and yeasts.

The sensory deodorization method is a removal method by masking a smell that cancels sensory neutralization or odor by using aromatic fragrance for the target malodorous component.

Various substances are used for the purpose of sterilization / antibacterial, and inorganic complex compounds are known to have excellent sterilizing ability to sterilize fungi and viruses including bacteria while being harmless to the human body.

In spite of the excellent effect of the inorganic complex compound, it has a disadvantage in that it does not work in the absence of ultraviolet light or sunlight due to the action of ultraviolet light or sunlight.

Recently, flavonoid-based deodorants extracted from plants have been used as deodorants capable of removing odorous substances. Flavonoids are generic names of plant pigments having a carbon skeleton of C ₆ -C ₃ -C ₆ , which include flavones, flamabanones, isoflavones, antoclones, anthocyanins, and catechins.

In order to effectively remove odors, it is required to efficiently remove the odor causes, mask odors, and remove odor causing substances at the same time. To this end, the components are stably present while providing components capable of achieving the above effects. There is a demand for a method that can perform the function.

The present inventors have diligently researched to develop an aqueous composition having a bactericidal / antibacterial and deodorizing function suitable as a fiber deodorant. As a result, the present invention uses an aqueous composition prepared by using an inorganic metal complex compound in which nanosilver is supported on the surface of titanium dioxide. In this case, unlike the conventional inorganic metal complex compound, the present invention was completed by confirming that effective sterilization / antibacterial and deodorization function can be achieved without ultraviolet rays or sunlight.

Accordingly, it is an object of the present invention to provide an aqueous composition for fiber deodorant with sterilization / antibacterial and deodorant function, in which nanosilver contains an inorganic metal complex supported on the surface of titanium dioxide as an active ingredient.

According to one aspect of the present invention, the present invention provides an aqueous composition for disinfectant of antibacterial and antibacterial and deodorant function, wherein the nano silver contains an inorganic metal complex compound supported on the surface of titanium dioxide as an active ingredient.

The present invention is characterized in that the nanosilver comprises an inorganic metal complex compound supported on the surface of titanium dioxide as an active ingredient.

In the present invention, when the nanosilver uses the inorganic metal complex supported on the surface of the titanium dioxide, even if the inorganic metal complex supported on the surface of the titanium dioxide does not have ultraviolet rays or sunlight in the aqueous phase, its function is maintained. The advantage is that it can be maintained. In other words, when ultraviolet rays or sunlight are irradiated, the strong oxidation power of the photocatalyst titanium dioxide oxidizes and decomposes harmful substances, odorous substances and bacteria in the fiber, and cleans the fibers. The silver component oxidizes and decomposes harmful substances, odorous substances, and bacteria in the fiber, and has an antibacterial effect.

This is to overcome the point that the inorganic metal complex compound in which the conventional general metal is supported on titanium dioxide could not have a chemical reaction inherent to titanium dioxide in the absence of ultraviolet rays or electrical stimulation.

Nanosilver used in the present invention refers to a particle having a level of nanometers (1 billionth of a meter) of silver (銀) having antibacterial and bactericidal functions in the natural component itself.

Representative photocatalysts with semiconductor properties include oxides such as TiO ₂ , ZnO, RuO ₂ , CoO, Ce ₂ O ₃ , Cr ₂ O ₃ , Rh ₂ O ₃ , V ₂ O ₅ , and sulfides such as ZnS and CdS. There is this.

When ultraviolet rays of short wavelength (380 nm or less) are irradiated to these photocatalysts, they become excited and exhibit strong oxidizing power. There are several types of photocatalyst as described above, but the preferred photocatalyst for the present invention is titanium dioxide.

Semiconductor energy bands have a valence band, a conduction band, and a gap between them. In the case of titanium dioxide, the electron gap of the valence band having absorbed more than the energy gap of 3.2 eV is excited and moves to the conduction band. In the valence band, a hole is made and the movement is free. Therefore, when irradiated with ultraviolet (UV) light becomes an excited state, that is, an active state.

The electrons and holes move to the surface and combine with oxygen and hydroxyl groups to form radicals. In the case of titanium dioxide, the oxidizing power of the hole is more powerful, and mainly hydroxyl radicals oxidize organic materials and oxidize and decompose the carbon dioxide (CO ₂ ) and water (H ₂ O). In addition, it exhibits antimicrobial activity even in weak ultraviolet light that does not kill bacteria.

Titanium dioxide of the anatase type is a semiconductor type metal oxide, which generates redox radicals by light energy and exhibits strong oxidation characteristics with respect to adjacent organic materials.

When light is irradiated on titanium dioxide, active oxygen and OH radicals are generated on the photocatalyst to decompose and purify odorous substances by powerful redox effect.

In the present invention, the titanium dioxide and the antibacterial metal coexist in a more stable state, characterized in that it can be well expressed at the same time.

The present invention can be implemented by a process of coating the surface of the particles with a porous inorganic oxide to the microcapsule (microcapsule) using a sol-gel method.

By supporting the antimicrobial metal component on the surface of the titanium dioxide which is a photoreactive catalyst material, it is possible to prepare an antimicrobial photocatalyst material that can express strong antimicrobial ability even in an environment in which antimicrobial ability is enhanced or light irradiation is insufficient.

In the present invention, discoloration from ultraviolet rays can be prevented by containing or combining silver, an antimicrobial metal component, in titanium oxide, which is a strong ultraviolet absorber, and by coating with TiO ₂ , physical and chemical external influences such as ultraviolet rays, acid alkalis, By preventing desorption due to Cl ions or mechanical impact, photocatalyst performance and antimicrobial ability can be given in a more stable state.

The method of coating TiO ₂ in the present invention may be various, but a typical sol-gel process may be mentioned.

TiO ₂ precursor (Titanium alkoxide) to titanium tetraisopropoxide _{(Titanium Tetraisopropoxide; Ti (OC 2} H 5) 4), titanium tetra-ethoxide _{(Titanium Tetraethoxide; Ti (OC 3} H 7) 4), titanium acetate It can be obtained by hydrolysis by adding alcohol, water such as methanol, ethanol, isopropyl alcohol (2-propanol), hydrochloric acid, nitric acid, etc., which are sol-forms, and stirring it for a predetermined time using titanium acetate.

That is, by adding a silica sol, silica-titania sol or an intermediate product made by the above-mentioned sol-gel method to the photocatalyst hydroxyl powder containing antimicrobial metal, sufficient hydrolysis reaction can occur, thereby enhancing more stable antimicrobial activity. A photocatalyst can be obtained.

In the present invention, nanosilver is an inorganic metal complex supported on the surface of titanium dioxide, and essentially contains 0.01 to 12% by weight, preferably 0.01 to 5% by weight, of inorganic metal complex having a particle size of 1 to 100 nm. Provided is a fiber deodorant for apparel and textile products. The content may be included in the range of 1 to 10,000 ppm, preferably 300 to 3,000 ppm, based on the substantially active ingredient.

In the present invention, the inorganic silver metal complex on which the nano silver is supported on the surface of titanium dioxide inhibits the generation and growth of microorganisms by bactericidal / antibacterial action, thereby eliminating the cause of odors, thereby simultaneously causing bactericidal / antibacterial and deodorant effects Can be.

In the present invention, the aqueous composition containing the inorganic metal complex compound in which the nanosilver of the present invention is supported on the surface of titanium dioxide is particularly suitable for a fiber deodorant, and silver, which is a cation, is adsorbed onto the fiber and contains a deodorant component and a fragrance component. This is because the liquid phase is volatilized and the silver component is evenly distributed in the fiber, so that the effect can be continuously achieved compared to other sterilizing / antibacterial agents in the fiber.

According to a preferred embodiment of the present invention, a conventional antimicrobial agent may be used together for the purpose of cost or activity improvement. The conventional antimicrobial agent may be contained 0.1-3.0% by weight based on the total composition.

The aqueous composition for fiber deodorant of the present invention is characterized in that it further comprises a deodorant.

Although the present invention achieves excellent sterilization / antibacterial and deodorizing effect by the inorganic metal complex compound supported on the surface of titanium dioxide, the nano silver is more excellent by adding the effect of removing the odor generated in addition to removing the cause of the odor by using an additional deodorant. Deodorizing effect can be achieved.

Since the aqueous composition for fiber deodorant of the present invention is used for fibers, it is preferable to use a deodorant which maintains transparency of the composition and does not cause side effects on the human body.

In particular, when the nanosilver uses an inorganic metal complex supported on the surface of the titanium dioxide, it should be selected so that the pH of the composition does not exceed the range of 7-9 due to the use of the deodorant. For example, when glutamic acid, which is a chemical deodorant, is used, the pH of the composition is acidified, so that precipitation of inorganic metal complexes in which nanosilver is supported on the surface of titanium dioxide is problematic.

According to a preferred embodiment of the present invention, in consideration of the above matters, a preferred deodorant is a plant polyphenol-based deodorant extracted from a plant, more preferably a persimmon extract or green tea extract.

According to a preferred embodiment of the present invention, the plant deodorant is contained 0.5-3.0% by weight based on the total composition.

If the content of the plant deodorant is 0.5% by weight or less, a problem that the deodorizing power is greatly decreased, and if more than 3.0, there is a problem that it is difficult to keep the composition transparent.

The aqueous composition for the fiber deodorant of the present invention is characterized in that it further comprises a fragrance.

The present invention achieves an excellent bactericidal / antibacterial and deodorizing effect by the inorganic metal complex compound on the surface of titanium dioxide, and additionally adds the effect of removing the odor generated in addition to eliminating the cause of the odor by using a deodorant. Excellent deodorizing effects can be achieved by masking odors with the use of paints.

Since the aqueous composition for the fiber deodorant of the present invention is used for the fiber, the preferred fragrance is excellent in reverberation in the fiber, especially when the nanosilver uses an inorganic metal complex supported on the surface of titanium dioxide. Choose a fragrance that will not deviate.

According to a preferred embodiment of the present invention, the preferred fragrance in the present invention is a fragrance excellent in the reverberation in the fiber by strengthening the configuration of the base note rather than the top note (TOP NOTE), when considering the pH, Preferred flavors are floral flavors rather than citrus or green flavors.

According to a preferred embodiment of the present invention, the fragrance is included 0.05-2.0% by weight based on the total composition.

Since the composition of the present invention is aqueous, ethanol and a surfactant are used to uniformly distribute the hydrophobic fragrances commonly used in the aqueous composition and to obtain transparency.

According to a preferred embodiment of the present invention, the content of ethanol used is 5-25% by weight based on the total composition.

The preferred amount of surfactant is 1-3 times or more of the amount of fragrance used, preferably 0.1-3.0% by weight, but the preferred ratio of fragrance, ethanol and surfactant is uniform depending on the fragrance used and the surfactant used. The distribution and the transparency of the composition are determined in a range that can be obtained, and especially when the nanosilver uses an inorganic metal complex supported on the surface of titanium dioxide, the pH of the composition should be determined to be in the range of 7-9.

According to a preferred embodiment of the present invention, the surfactant may be used cationic, anionic and nonionic surfactants commonly used, preferably anionic and nonionic surfactants, most preferably HLB It is a nonionic surfactant with a value of 8-18.

The composition of the present invention may additionally be mixed with additives if necessary, and additives include, for example, preservatives and antioxidants.

The aqueous composition for the fiber deodorant of the present invention can obtain excellent sterilization / antibacterial and deodorizing effect by using an inorganic metal complex in which the nano silver is supported on the surface of titanium dioxide, and additionally removes the cause of the odor by using a deodorant or a perfume. Masking and odor-causing substances can be removed at the same time, resulting in an excellent deodorizing effect.

The aqueous composition for the fiber deodorant of the present invention uses ethanol and a surfactant together with the fragrance in applying the hydrophobic fragrance, and the fragrance is not only uniformly distributed in the composition, but also has excellent transparency.

The aqueous composition for fiber deodorant of the present invention is particularly useful for spraying, but is not limited thereto.

The preparation method of the composition of the present invention is described as follows: The premix tank is filled with a suitable amount of ethanol and the surfactant and the perfume are added with stirring to prepare the premix. If an antimicrobial or preservative is added, it may be added together in this step. Fill the final mixing tank with water and add and stir the inorganic metal complex with the plant extract and nanosilver supported on the surface of titanium dioxide. The premix is added to the final mixing tank with stirring. After mixing the premix tank is rinsed with a suitable amount of ethanol and mixed in the final mix tank.

In the present invention, an antimicrobial agent and a fragrance that are not easily emulsified in a water base in a premixing tank are prepared in an alcohol base with a surfactant, and an inorganic metal complex compound and an alcohol in which nanosilver is supported on the surface of titanium dioxide in a final mixing tank. The deodorant, which does not dissolve in the base, is dissolved in the aqueous base and then mixed to ensure that each component is applied stably in the composition of the present invention which is entirely aqueous.

Hereinafter, the present invention will be described in more detail with reference to Examples. These examples are only for illustrating the present invention in more detail, it is to those of ordinary skill in the art that the scope of the present invention is not limited by these examples in accordance with the gist of the present invention. Will be self-evident.

Preparation Example 1 Method of Preparation of Composition

Preparation Example 1-1 Preparation of Premix

Fill 80% of the premix tank with ethanol and completely dissolve the preservative (2-n-octyl-4-isothiazoin-3-one) while stirring, then use a non-ionic surfactant (caster oil) and fragrance (Fragrance, In House company) Were added sequentially.

Preparation Example 1-2 Preparation of Final Mixture

Filling the final mixing tank with water and stirring, the persimmon extract and the inorganic silver metal complex with nano silver supported on the surface of titanium dioxide were sequentially added. The premix prepared in Example 1-1 was added to the final mixing tank with stirring. After mixing, 20% of the premix tank was filled with ethanol and stirred well to rinse the premix tank and mix in the final mix tank. The pH of the composition was 8.1 ± 0.3.

The composition ratio of the mixture is as shown in Table 1 below.

turn ingredient Example 1 (% by weight) Example 2 (% by weight) One Plant deodorant 3.00 3.00 2 ethanol 15.00 15.00 3 Spices 0.50 0.50 4 Surfactants 2.00 2.00 5 Metal Complex (TiO ₂ / Ag) 0.05 0.30 6 antiseptic 0.10 0.10 7 Distilled water 79.35 79.10 Sum 100 100

Experimental Example 1: Evaluation of bactericidal power

The bactericidal power of the Example 1 and Example 2 compositions prepared according to the composition of Table 1 was evaluated. The experimental bacterial solution was shaken at 120 rpm for 30 minutes, 60 minutes and 90 minutes at 35 ± 1 ° C. Strains include Staphylococcus aurous ATCC 6538 and Klebsiella pneumoniae ATCC 4352 was used. The reduction rate was calculated by Equation 1 below and the results are shown in Table 2.

% Reduction = [(Mb-Mc) / Mb] x 100

Contents Staphylococcus aurous ATCC 6538 Klebsiella pneumoniae ATCC 4352 30 minutes later 60 minutes later 90 minutes later 30 minutes later 60 minutes later 90 minutes later Inoculation bacterial concentration (CFU * / ml) 1.5 x 10 ⁵ 1.2 x 10 ⁵ Bacterial concentration Ma immediately after inoculation 1.5 x 10 ⁵ 1.2 x 10 ⁵ Bacterial concentration Mb according to incubation time (sample-free group) 1.6 x 10 ⁵ 1.9 x 10 ⁵ 2.2 x 10 ⁵ 1.3 x 10 ⁵ 1.5 x 10 ⁵ 2.0 x 10 ⁵ Bacterial concentration Mc according to incubation time (sample treatment group) Example 1 <10 <10 <10 <10 <10 <10 Example 2 <10 <10 <10 <10 <10 <10 % Reduction) Example 1 99.9 99.9 99.9 99.9 99.9 99.9 Example 2 99.9 99.9 99.9 99.9 99.9 99.9 Nonionic surfactant TWEEN 80 (0.05%)

* CFU = Colony Forming Unit

As can be seen in Table 2, Examples 1 and 2 of the present invention showed an excellent antimicrobial effect.

Experimental Example 2: Evaluation of Deodorizing Power

In Example 1 of Table 1, a composition (Example 3) having a content of a deodorant of 0.5% by weight and a composition (Example 4) of 2.0% by weight were prepared to evaluate deodorizing power.

Each of 5.5 g of the composition of Example 3 was placed in three Petri dishes and placed in a 3L dryer. Odor gas (NH ₃ , H ₂ S, CH ₃ SH) was injected 1 minute after the concentration of the odor gas was measured by using a measuring tube was used as the initial concentration. The concentration of malodorous gas was measured after 20, 40, 60, 80 and 100 minutes in the same manner.

The same experiment was conducted using Example 4. The deodorizing force was calculated by the following Equation 2, and the results are shown in Table 3.

Residual amount after deodorization (%) = hourly measurement concentration / initial concentration x 100

1) Example 3 (Deodorant 0.5%) Time (min) NH ₃ H ₂ S CH ₃ SH ppm Index (%) ppm Index (%) ppm Index (%) 0 69.73 100.00 80.00 100.00 80.00 100.00 20 49.25 70.63 76.46 95.58 78.20 97.75 40 42.80 61.38 75.26 94.08 75.60 94.50 60 40.36 57.88 75.26 94.08 73.10 91.38 80 40.08 57.48 74.38 92.98 70.05 87.56 100 38.86 55.73 73.12 91.40 70.00 87.50 2) Example 4 (2% Deodorant) Time (min) NH ₃ H ₂ S CH ₃ SH ppm Index (%) ppm Index (%) ppm Index (%) 0 73.26 100.00 120.00 100.00 100.00 100.00 20 39.00 53.24 115.28 96.07 80.00 80.00 40 36.25 49.48 104.70 87.25 60.00 60.00 60 25.12 34.29 87.06 72.55 52.46 52.46 80 24.08 32.87 80.00 66.67 48.28 48.28 100 22.86 31.20 75.29 62.74 44.85 44.85

The composition of the present invention showed a difference in the deodorizing power according to the content of the deodorant.

As described above, the present invention provides an aqueous composition for fiber deodorant with sterilization / antibacterial and deodorant function, in which nanosilver is included as an active metal inorganic compound active ingredient supported on the surface of titanium dioxide. Aqueous compositions containing inorganic metal complexes in which the nanosilver of the present invention is supported on the surface of titanium dioxide are particularly excellent for deodorizing fibers, and additionally include deodorants or odors, thereby removing the cause of the occurrence of odors in fibers, odor covers and The removal of odor causing substances can be achieved efficiently at the same time.

Claims (13)

A sterilizing, antibacterial and deodorizing fiber deodorant in which the nanosilver obtained through the sol-gel hydrolysis reaction in an aqueous medium composed of a mixture of ethanol and water contains a nanosilver complex compound supported on the surface of titanium dioxide as an active ingredient. Aqueous composition. The aqueous composition for a fiber deodorant according to claim 1, wherein the content of the nanosilver complex compound is 0.01 to 12% by weight. The aqueous composition for a fiber deodorant according to claim 1, wherein the particle size of the nanosilver complex compound is 1 to 100 nm. The aqueous composition of claim 1, wherein the composition further comprises a deodorant consisting of persimmon extract or green tea extract. delete delete 5. The aqueous composition for a fiber deodorant according to claim 4, wherein the content of the deodorant is 0.5 to 3.0% by weight based on the total composition. The aqueous composition for fabric deodorant according to claim 1 or 4, wherein the composition further comprises a fragrance. 9. The aqueous composition for the fabric deodorant according to claim 8, wherein the content of the perfume is 0.05-2.0 wt% based on the total composition. 9. The aqueous composition for a fiber deodorant according to claim 8, wherein the composition further comprises a surfactant and ethanol. The aqueous composition of claim 10, wherein the amount of the surfactant is 0.1-3.0 wt% based on the total composition. 11. The aqueous composition for the fabric deodorant according to claim 10, wherein the content of ethanol is 5-25% by weight based on the total composition. The aqueous composition for fabric deodorant according to claim 1, wherein the pH of the composition is in the range of 7-9.