JP2014133773A - Liquid antimicrobial agent composition - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a liquid antimicrobial agent composition which can form a transparent and soft coating film by being applied on a place where molds easily grow, such as a bathroom wall surface or a washstand, easily allows recoating without forming an uneven part and an opaque part even in the case when the recoating is carried out without exfoliating the old coating film after expiration of an effective period, and can sustain antimicrobial effects for a long period of time by uniformly releasing an antimicrobial component to the surface of the coating film over a long period and inhibiting the exfoliation of the antimicrobial component caused by simple rubbing.SOLUTION: The liquid antimicrobial agent composition includes amphipathic metal oxide nano-particles (particle diameter: 1-30 nm) obtained by hydrolyzing a metal chelate compound having one or more hydrolyzable groups and/or hydroxy groups in total, such as diisopropoxy-bisacetylacetonatotitanium, and an antimicrobial component such as thiabendazole. The composition is applied on a place where molds easily grow.

Description

  The present invention relates to a liquid antibacterial agent composition containing amphiphilic metal oxide nanoparticles and an antibacterial component, and a method for preventing wrinkles, which comprises applying the liquid antibacterial agent composition.

  2. Description of the Related Art Conventionally, a drug that prevents the generation of wrinkles at places where wrinkles easily occur, such as bathroom walls and washstands, by applying an ethanol solution of an antifungal agent (thiabendazole) in an aerosol form is commercially available. In this commercially available soot dome spray, it is said that the occurrence of soot for 3 to 6 months is prevented (depending on the use conditions), but when the alcohol evaporates on the coated surface, thiabendazole as an active ingredient precipitates in a crystalline form, It has been pointed out that the whitened or crystallized thiabendazole can be easily peeled off from the coated surface when applied to a colored wall surface for whitening, so that the effective period is short and the scattered powder may be contaminated with the environment.

  Currently, many paints containing antifungal agents are sold, and those made of transparent resin are also sold. However, if the coating is next applied because it is as thick as 10-30μ, the previous coating must be removed. It is difficult to remove the coating film, requiring a lot of labor, and the antifungal agent of the active ingredient is sealed in the resin. There was a problem that no longer showed.

  On the other hand, the titanium oxide particles having submicron size photocatalytic properties having an average particle diameter of less than 0.04 μm are selected from one or two kinds selected from nanometer-order metallic silver and metal copper having an average particle diameter of less than 4 nm. Nanometer size on the surface of antibacterial and deodorizing materials (see, for example, Patent Document 1) obtained by dispersing and adhering metal particles in the range of 0.5 wt% to 5 wt% and submicron size titanium oxide particles Antibacterial / antifungal powder (for example, patent document), characterized in that metallic silver particles having antibacterial properties are dispersed and supported in a range of 8 wt% to 30 wt% per unit weight of the titanium oxide particles. 2) is known, and the reason for using titanium oxide particles having an average particle size of 0.04 μm or less is that the specific surface area is increased to increase the amount of reaction with the substance to be decomposed per unit area. It has been disclosed to increase (photocatalytic action) or to disperse and adhere metal particles such as metallic silver and metallic copper (supporting action).

  In addition, drugs such as antibacterial agents or antiallergic agents containing biologically active substances such as antibacterial substances or antiallergic substances having a nano size have been proposed (for example, see Patent Document 3), It is a drug that is high and effective for a long time against bacteria and allergens floating in a large space that can achieve the desired effect in a smaller amount.

Japanese Patent Laid-Open No. 11-349423 JP 2003-212707 A JP 2003-238392 A

  The problem of the present invention is that a transparent and flexible coating film with a film thickness of several tens of nanometers can be uniformly formed by applying it to a place where a wrinkle easily grows such as a bathroom wall surface, a washstand, etc. Even if it is repainted without peeling off the old paint film, it does not form irregularities or opaque parts and can be easily repainted. However, an object of the present invention is to provide a liquid antibacterial agent composition that does not peel off by simple friction and can maintain the antibacterial effect for a long period of time.

  When the present inventors hydrolyze a metal chelate compound having a total of 1 or more hydrolyzable groups and / or hydroxyl groups such as diisopropoxybisacetylacetonate titanium, a chelate compound such as hydroxyl group (hydrophilic) and acetylacetone ( Hydrophobic) chemically modifies the condensate of metals such as titanium and oxygen to form amphiphilic metal oxide nanoparticles, which are amphiphilic, so water-soluble and oil-soluble substances In addition, a coating film that does not peel off by simple friction even when the surface is applied to any hydrophilic or hydrophobic substrate can be obtained. Since the conductive metal oxide nanoparticles are uniformly dispersed, it can form a thin film with a thickness of 20 to 50 nm, and when used in combination with antibacterial components, it forms a uniform mixture with antibacterial components. Antimicrobial component or the like is precipitated as fine particles, it found that not precipitate in large crystals, and completed the present invention.

  That is, the present invention relates to (1) a liquid antibacterial agent composition containing amphiphilic metal oxide nanoparticles and an antibacterial component, and (2) amphiphilic metal oxide nanoparticles comprising a hydrolyzable group and / or Or a liquid antibacterial agent composition according to (1) above, which is a hydrolysis product of a metal chelate compound having a total of 1 or more hydroxyl groups, and (3) amphiphilic metal oxide nanoparticles. The liquid antibacterial agent composition according to the above (1) or (2) or (4) the metal oxide nanoparticle is a titanium oxide nanoparticle, wherein the liquid antibacterial agent composition is a nanoparticle having a particle diameter of 1 nm to 30 nm. Any of (1) to (4) above, wherein the liquid antibacterial agent composition according to any one of (1) to (3) above or (5) an antibacterial component is dissolved It relates to the liquid antibacterial composition described in the above.

  The present invention also provides (6) the liquid antibacterial agent composition according to any one of (1) to (4) above, wherein the antibacterial component is a fine particle dispersion having a diameter of 1 μm or less; The liquid antibacterial composition according to any one of (1) to (6) above, wherein the component is an antifungal agent, and (8) the antifungal agent is thiabendazole, 3-iodo-2-propa The liquid antibacterial agent composition according to the above (7), which is gilbutyl carbamate, 2-methoxycarbonylaminobenzimidazole, or 2-pyridinethiol-1-oxide zinc salt, and (9) an amphiphile The liquid antibacterial agent composition according to any one of the above (1) to (8), wherein the content of the functional metal oxide nanoparticles is 0.01 to 10% by weight; The content of the component is the content of the metal oxide nanoparticles Characterized in that it is a .01～5 times regarding liquid antimicrobial composition according to any one of the above (1) to (9).

  Furthermore, the present invention provides (11) the liquid antibacterial agent composition according to any one of (1) to (10) above, wherein the liquid component is water or a hydrous alcohol, and (12) an acid, a base, and A liquid antibacterial agent composition according to any one of (1) to (11) above, or (13) a water-soluble polymer. The liquid antibacterial agent composition according to any one of (1) to (12) above, or the liquid according to any one of (1) to (13) above, comprising (14) a water repellent component. The present invention relates to an antibacterial agent composition and (15) a method for preventing wrinkles, which comprises applying the liquid antibacterial agent composition described in (1) to (14) above.

  When the liquid antibacterial agent composition of the present invention is applied to an easily-foamed part (object) such as a bathroom wall or a wash basin, the alcohol is evaporated and the antibacterial component dissolved in the alcohol when forming the coating film Precipitates as fine particles of the same level as titanium oxide nanoparticles, and uniformly mixes with titanium oxide nanoparticles, forming a transparent and flexible coating film regardless of the color and shape of the target (transparency of the film Flexibility). In addition, because the film thickness is as thin as 20 to 50 nm, even if repainting is performed without peeling off the old paint film after the end of the effective period, it can be easily repainted without forming irregularities or opaque parts. (Repaintable). And since the coating film formed by the liquid antibacterial agent of the present invention is a uniform mixture of titanium oxide nanoparticles and fine particles of the antibacterial component, the active ingredient is not sealed and stored in the coating film for a long time. It is possible to uniformly release the antibacterial component to the coating surface and to maintain the antibacterial effect (uniform release of the active component). Furthermore, since the titanium oxide nanoparticles are thin on the surface of the object and form a uniform coating film, the antibacterial component does not peel off by simple friction and can remain on the surface of the object for a long period of time to exhibit the antibacterial effect ( Difficult to peel off from the painted surface).

  The liquid antibacterial agent composition of the present invention is not particularly limited as long as it is a composition containing amphiphilic metal oxide nanoparticles and an antibacterial component. Examples of the antibacterial component include known antifungal agents and antibacterial agents. Anti-viral agents, etc., for example, solubility in water is 0.1 g / 100 g or less, 0.5 g / 100 g or more is dissolved in ethyl alcohol, and solid antibacterial components are dissolved and used at room temperature. A room-temperature solid antibacterial agent having a solubility in water and alcohol of 0.1 g / 100 g or less can be used in a dispersed state. As the antibacterial agent to be used in a dispersed state, those that become a fine particle dispersion having a diameter of 1 μm or less are particularly preferable.

  As the antibacterial component, an antifungal agent can be particularly preferably exemplified. Among the antifungal agents, antifungal agents that can be used by dissolving include thiabendazole, 3-iodo-2-propargylbutylcarbamate, 1,2-benzotriazolin-3-one, diiodomethyl-p- Tolylsulfone, 2,3,5,6-tetrachloro-4- (methylsulfonyl) pyridine, 2,3,3-triiodoallyl alcohol, 1- (2- (2,4-dichlorophenyl) -2- (2 Specific examples include -propenyloxy) ethyl) -1H-imidazole (imazalyl) and the like, among which thiabendazole and 3-iodo-2-propargylbutylcarbamate are preferable. Further, among the antifungal agents, examples of the antifungal agents that can be used by being dispersed include 2-methoxycarbonylaminobenzimidazole, 2-pyridinethiol-1-oxide zinc salt, and the like as preferable specific examples. Can do.

  The amphiphilic metal oxide nanoparticles are not particularly limited as long as they have an affinity for both an aqueous solvent and an organic solvent. For example, hydrolyzable groups and / or hydroxyl groups may be used. Examples thereof include hydrolysis products of metal compounds having 2 or more in total, hydrolysis products of metal chelate compounds having 1 or more in total of hydrolyzable groups and / or hydroxyl groups.

  The metal compound having two or more hydrolyzable groups and / or hydroxyl groups in total is a metal compound having two or more hydrolyzable groups and / or hydroxyl groups in total, which is hydrolyzed and amphiphilic. In particular, the hydrolyzable group is a functional group that hydrolyzes upon contact with water, or a metal atom in the presence of water. A functional group capable of forming a bond with an oxygen atom, specifically, a halogen atom, an amino group, an alkoxy group, an ester group, a carboxy group, a phosphoryl group, an isocyanate group, a cyano group, an epoxy group, etc. Can be mentioned. And as a metal compound which has a hydrolysable group and / or a hydroxyl group 2 or more in total, the compound represented by Formula (I) can be illustrated preferably.

R _a MX _b (I)

  In the above formula (I), M represents a metal atom, preferably a metal atom of Groups 13 to 15 of the periodic table, and more specifically, silicon, germanium, tin, lead, titanium, zirconium, Aluminum, indium, tantalum, tungsten, zinc and the like can be exemplified, and among these, silicon, germanium, titanium, zirconium and aluminum are more preferable.

  In the above formula (I), R represents a hydrogen atom or an organic group which may have a hydrolyzable group capable of forming a bond via a metal atom and an oxygen atom. Examples of such an organic group include an alkyl group, an alkenyl group, and an aromatic group, and the number of carbon atoms is not particularly limited, but is usually 1 to 20, preferably 1 to 12. Specific examples of such R include alkyl groups such as methyl, ethyl and propyl; halogenated alkyl groups such as chloromethyl, chloroethyl, chloropropyl, bromopropyl, bromooctyl and trifluoropropyl. An epoxyalkyl group such as a glycidoxypropyl group or an epoxycyclohexylethyl group; an aminoalkyl group such as an aminopropyl group or an aminobutyl group; an alkenyl group such as a vinyl group or an allyl group; an acryloxypropyl group or a methacryloxypropyl group; (Meth) acryloxyalkyl groups; aralkyl groups such as benzyl groups; aromatic groups such as phenyl groups and naphthyl groups;

  In the above formula (I), X represents a hydrolyzable group or hydroxyl group bonded to M. Specifically, an alkoxy group having 1 to 12 carbon atoms such as a methoxy group, an ethoxy group, an n-propoxy group, an isopropoxy group, an n-butoxy group, a sec-butoxy group, a t-butoxy group, and an n-pentyloxy group. A group containing a nitrogen atom such as a hydroxyimino group, a hydroxyamino group, an enoxy group, an amino group or a carbamoyl group; a halogen atom such as a chlorine atom or a bromine atom; a hydroxyl group;

  In the above formula (I), a and b each independently represent an integer of 0 to m (m represents a valence of a metal atom) (where a + b = m). Since the compound represented by the formula (I) is a compound having a total of 2 or more hydrolyzable groups and / or hydroxyl groups in the molecule, in the formula (I), b is a compound having 2 or more; b A compound in which R is 1 and R having a hydrolyzable group is 1 or more; a compound in which b is 0 and R having a hydrolyzable group is 2 or more.

  Specific examples of the compound represented by the formula (I) include methyltrimethoxysilane, methyltriethoxysilane, ethyltrimethoxysilane, ethyltriethoxysilane, propyltrimethoxysilane, propyltriethoxysilane, tetramethoxysilane, Tetraethoxysilane, tetra-n-propoxysilane, tetraisopropoxysilane, β- (3,4-epoxycyclohexyl) ethyltrimethoxysilane, (3-glycidoxypropyl) methyldiethoxysilane, 3-glycidoxypropyl Trimethoxysilane, benzyltriethoxysilane, allyltriethoxysilane, vinylmethyldiacetoxysilane, 3-methacryloxypropyltrimethoxysilane, 3-methacryloxypropyltrimethoxysilane, 3-acryloxypro Silane alkoxides such as rutrimethoxysilane, 2-chloroethyltriethoxysilane, 4-aminobutyltriethoxysilane, 3-aminopropyltriethoxysilane, and 3-aminopropyltrimethoxysilane; germanium such as tetramethoxygermanium and tetraethoxygermanium Alkoxide; Titanium alkoxide such as tetra-n-propoxy titanium, tetraisopropoxy titanium, tetra-n-butoxy titanium, tetra-sec-butoxy titanium, tetra-t-butoxy titanium; tetra-n-propoxy zirconium, tetraisopropoxy zirconium , Zirconium-alkoxides such as tetra-n-butoxyzirconium, tetra-sec-butoxyzirconium, tetra-t-butoxyzirconium; triethoxyaluminum Aluminum alkoxides such as nitro, tri-n-propoxyaluminum, triisopropoxyaluminum, tri-n-butoxyaluminum, tri-sec-butoxyaluminum, tri-t-butoxyaluminum; tetrachlorosilane, tetrabromosilane, dimethyldichlorosilane, Benzyltrichlorosilane, t-butylphenyldichlorosilane, 3-chloropropyltrichlorosilane, 8-bromooctyltrichlorosilane, 3-bromopropyltrichlorosilane, (3,3,3-trifluoropropyl) dichlorosilane, (3,3 , 3-trifluoropropyl) trichlorosilane, chloromethyltrichlorosilane, allyltrichlorosilane, 3-acryloxypropyltrichlorosilane and other halogenosilanes; Aminosilanes such as ethylamino) silane; other silane compounds such as vinylmethylbis (methylethylketoximine) silane; 3,3,3-trifluoropropyldimethoxyhydroxysilane, 3,3,3-trifluoropropylmethoxydihydroxysilane, And hydroxysilanes such as octylethoxydihydroxysilane;

  Among these, metal alkoxides such as silane alkoxide, germanium alkoxide, titanium alkoxide, zirconium alkoxide, and aluminum alkoxide are preferable, silane alkoxide, titanium alkoxide, or zirconium alkoxide is more preferable, and titanium alkoxide is particularly preferable.

  The above-mentioned metal chelate compound having one or more hydrolyzable groups and / or hydroxyl groups has one or more hydrolyzable groups and / or hydroxyl groups in total, and is formed by combining chelate compounds. The hydrolyzable group is not particularly limited as long as it can produce amphiphilic metal oxide nanoparticles by hydrolysis, and the hydrolyzable group includes 2 hydrolyzable groups and / or hydroxyl groups in total. The same thing as what was illustrated in the place of the metal compound which has been mentioned above can be mentioned.

  Examples of chelate compounds include β-ketoesters such as methyl acetoacetate, ethyl acetoacetate, acetoacetate-n-propyl, isopropyl acetoacetate, acetoacetate-n-butyl, acetoacetate-sec-butyl, acetoacetate-t-butyl Acetylacetone, hexane-2,4-dione, heptane-2,4-dione, heptane-3,5-dione, octane-2,4-dione, nonane-2,4-dione, 5-methyl-hexane-2 Β-diketones such as 1,4-dione; saturated aliphatic dicarboxylic acids such as oxalic acid, malonic acid, succinic acid, glutaric acid, adipic acid, pimelic acid, suberic acid, azelaic acid and sebacic acid; glycols such as ethylene glycol Glycolic acids such as oxyacetic acid; ethylenediaminetetraacetic acid (EDTA) and its sodium salt, ethyl Nitrogen-containing compounds such as range amine, 1,3-propanediamine, diethylenetriamine, pentamethyldiethylenetriamine, hexamethyltriethylenetetramine, tris [2- (dimethylamino) ethyl] amine, tri (pyridinylmethyl) amine; furan carboxylic acid, thiophene Carboxylic acid, nicotinic acid, isonicotinic acid, phenanthroline, diphenanthroline, substituted phenanthroline, 2,2 ', 6', 2 "-terpyridine, pyridineimine, crosslinked aliphatic diamine, 4,4'-di (5-nonyl) -2,2'-bipyridine, bipyridine coordinated with O, S, Se, Te, alkyliminopyridine, alkylbipyridinylamine, alkyl-substituted tripyridine, di (alkylamino) alkylpyridine, ethylenediaminedipyridine, etc. Heterocyclic compounds; mercapto alcohols such as 2-mercaptoethanol; dithiols such as ethanedithiol; mercaptoamines such as 2-mercaptoethylamine; dithioketones such as 2,4-pentanedithione; be able to.

  As a metal chelate compound having one or more hydrolyzable groups and / or hydroxyl groups in total, diethoxybisacetylacetonate titanium, diisopropoxybisacetylacetonate titanium, dinormalpropoxybisacetylacetonate titanium, dinormalbutoxybisacetyl Acetonate titanium, diethoxybisacetylacetonate zirconium, diisopropoxybisacetylacetonate zirconium, dinormalpropoxybisacetylacetonate zirconium, dinormalbutoxybisacetylacetonate zirconium, diethoxyacetylacetonate aluminum, diisopropoxyacetyl Acetonato aluminum, dinormal propoxyacetylacetonate aluminum, dinormalbutoxyacetylacetoner Specific examples include aluminum, ethoxybis (acetylacetonato) aluminum, isopropoxybis (acetylacetonato) aluminum, normalpropoxybis (acetylacetonato) aluminum, normal butoxybis (acetylacetonato) aluminum, etc. Among these, diisopropoxybisacetylacetonate titanium can be preferably cited.

  For the metal chelate compound having one or more hydrolyzable groups and / or hydroxyl groups in total, for example, a predetermined amount of chelate compound is added to the metal compound having one or more hydrolyzable groups and / or hydroxyl groups and stirred. Can be obtained. Although the obtained metal chelate compound can be isolated, it can be subjected to the subsequent hydrolysis and polycondensation reaction as it is.

  The hydrolysis product is at least one selected from the group consisting of metal compounds having a total of two or more hydrolyzable groups and / or hydroxyl groups, and metal chelate compounds having one or more hydrolyzable groups and / or hydroxyl groups. (Hereinafter, these are collectively referred to as “metal compounds, etc.”) 1 mol or more, preferably 5 mol or more, more preferably 10 mol or more of water and hydrolyzing it for production. Can do. In this case, the hydrolysis product may be a complete hydrolysis product or a partial hydrolysis product. Among these hydrolysis products, a hydrolysis product of a metal chelate compound having one or more hydrolyzable groups and / or hydroxyl groups in total is particularly preferable. As a method for preparing the hydrolysis product, 1) a method in which a metal chelate compound is dropped into water and hydrolyzed and mixed with an alcohol solution of an antibacterial component to obtain an antifungal solution, and 2) the metal chelate compound in an alcohol solvent And then hydrolyze with water. Thereafter, a method of obtaining an antifungal solution by mixing with an alcohol solution of an antibacterial component, and 3) a method of adding a metal chelate compound to the alcohol solution of the antibacterial component and adding water thereto for hydrolysis to obtain an antifungal solution. The preparation method of 3) above is particularly preferred, and the preparation is preferably carried out at 0 ° C. to room temperature, and the solvent used is preferably an alcohol solvent such as ethanol or propanol.

  In the production of the hydrolysis product, an acid, a base and / or a dispersion stabilizer may be added when hydrolyzing with water or after hydrolysis. Examples of the acid to be added include mineral acids such as hydrochloric acid, nitric acid, boric acid, and borofluoric acid, and organic acids such as acetic acid, formic acid, oxalic acid, carbonic acid, trifluoroacetic acid, p-toluenesulfonic acid, and methanesulfonic acid. A photoacid generator that generates an acid by light irradiation, such as diphenyliodonium hexafluorophosphate, triphenylphosphonium hexafluorophosphate, and the like. Examples of the base include triethanolamine, triethylamine, 1,8- Examples thereof include diazabicyclo [5.4.0] -7-undecene, ammonia, dimethylformamide, and phosphine.

  The dispersion stabilizer is an agent such as a deflocculating agent, a protective colloid, an anticoagulant such as a surfactant, which has the effect of stably dispersing the dispersoid in the dispersion medium, for example, glycolic acid, Polycarboxylic acids such as gluconic acid, lactic acid, tartaric acid, citric acid, malic acid and succinic acid; hydroxycarboxylic acids; phosphoric acids such as pyrophosphoric acid and tripolyphosphoric acid; acetylacetone, methyl acetoacetate, ethyl acetoacetate, n-propyl acetoacetate Isopropyl acetoacetate, n-butyl acetoacetate, sec-butyl acetoacetate, t-butyl acetoacetate, 2,4-hexane-dione, 2,4-heptane-dione, 3,5-heptane-dione, 2,4 -Multidentate ligand formation with strong chelating ability against metal atoms such as octane-dione, 2,4-nonane-dione, 5-methyl-hexanedione Products: Aliphatic amines such as Sulphurs 3000, 9000, 17000, 20000, 24000 (manufactured by Zeneca), Disperbyk-161, -162, -163, -164 (manufactured by BYK Chemie), hydrostearic acid Or polyesteramine; dimethylpolysiloxane / methyl (polysiloxyalkylene) siloxane copolymer, trimethylsiloxysilicic acid, carboxy-modified silicone oil, amine-modified silicone, etc. (JP-A-9-208438, JP-A-2000-53421, etc.) ) Silicone compounds; and the like.

  The particle size of the amphiphilic metal oxide nanoparticles is 0.8 nm to 100 nm, preferably 1 nm to 30 nm, more preferably 3 nm to 10 nm. A coating film having a thin film thickness can be formed, and when used in combination with an antibacterial component or the like, a uniform mixture is formed with the antibacterial component or the like, and the antibacterial component or the like precipitates as fine particles and is not preferable in the form of a large crystal. In addition, as the amphiphilic metal oxide nanoparticles, amphiphilic titanium oxide nanoparticles are preferable in that nanoparticles having a uniform particle diameter can be formed.

  The content of metal oxide nanoparticles such as amphiphilic titanium oxide nanoparticles in the liquid antibacterial agent composition of the present invention is 0.01 to 10% by weight, particularly 0.1 to 2% by weight, which is transparent and flexible. It is preferable for forming a thin film, and the content of the antibacterial component is 0.01 to 5 times, particularly 0.1 to 2 times the content of the metal oxide nanoparticles such as titanium oxide nanoparticles. It is preferable at the point which can form a uniform mixture with metal oxide nanoparticles, such as a titanium nanoparticle.

  A water-soluble polymer can be added to the liquid antibacterial agent composition of the present invention in order to stably spread and hold the antifungal component on the ceiling and wall surface of the bathroom inner surface over a predetermined period. Such a water-soluble polymer may be a natural water-soluble polymer, a synthetic water-soluble polymer, or a mixture thereof. Examples of the synthetic water-soluble polymer include polyacrylamide, polyacrylic acid, polymethacrylic acid, and polyitaconic acid. , Polyvinyl alcohol, polyethylene oxide, polyvinyl pyrrolidone, polyvinyl methyl ether, or a water-soluble polymer obtained by copolymerizing maleic acid, fumaric acid, crotonic acid, anicotic acid, etc. with other monomers, etc. Examples of the polymer include various starches, proteins, cellulose, hydroxypropylcellulose, carboxymethylcellulose and the like. In order to uniformly dissolve and disperse the antibacterial agent composition, a surfactant such as an anionic surfactant, a cationic surfactant, an amphoteric surfactant, and a nonionic surfactant should be added. You can also. Examples of the anionic surfactants include alkyl sulfates, polyoxyethylene alkyl ether sulfates, sulfosuccinates, amide ether sulfite types, sarcosine derivatives, phosphate ester types, soap types, and sulfonic acid types. There may be mentioned system surfactants. Examples of the cationic surfactant include cationic surfactants such as alkyltrimethylammonium salt, alkylamidoamine type, alkyldimethylbenzylammonium salt, and cationized polymer. Moreover, as a nonionic surfactant, an alkylol amide type | mold; Pegnol L-4, Pegnol TH-8, Pegnol L-9A, Pegnol L-12S, Pegnol L-20S, Pegnol T-6, Pegnol TE-10A, Pegnol ST-7, pegnol ST-9, pegnol ST-12, pegnol O-6A, pegnol O-107, pegnol O-16A, pegnol O-20, pegnol O-24, pegnol C-18, pegnol S-4D, Pegnol HC-10 (manufactured by Toho Chemical Co., Ltd.), Emulgen 705, Emulgen 707, Emulgen 709 (manufactured by Kao Corporation), etc .; polyoxyethylene alkyl ether type; polyethylene glycol fatty acid ester type; glycerin ester type; OE sorbite fatty acid ester type; Sol Polyoxyethylene sorbitan fatty acid ester type; Pepol A-0638, Pepol B-181, Pepol B-182, Pepol B-184, Pepol B-188, Pepol BEP-0115 (manufactured by Toho Chemical Co., Ltd.) And non-ionic surfactants such as low bromide polyethers.

  A water-repellent component can be further added to the liquid antibacterial agent composition of the present invention. Preferred examples of the water repellent component include dimethylpolysiloxane, fluorine silane or a dehydration condensate thereof, fluorine resin, dimethyl silicone oil, methyl hydrogen silicone oil, modified silicone oil, or an emulsion thereof.

  As a method for preventing wrinkle generation according to the present invention, the liquid antibacterial agent composition containing the amphiphilic metal oxide nanoparticles of the present invention and a fungicide is used to grow the wrinkles on the ceiling, wall surface, washstand, etc. of the bathroom inner surface. The method is not particularly limited as long as it is a method that can be applied to easy-to-use parts. Specifically, the spraying method, printing method, sheet forming method, dip coating method, spin coating method, bar coater method, Mayer bar method Examples thereof include a brush coating method and a roller coating method, but a spray spraying method is preferable. The thickness of the film to be formed is not particularly limited, but is usually in the range of 0.5 to 100 nm, and it is particularly preferable to form the film in a thickness of 20 to 50 nm.

  EXAMPLES Hereinafter, although an Example demonstrates this invention more concretely, the technical scope of this invention is not limited to these illustrations.

(1) Preparation of antifungal solution 181.8 g of diisopropoxybisacetylacetonate titanium (manufactured by Nippon Soda Co., Ltd., T-50, solid content in terms of titanium oxide 16.5% by weight) 2818.2 g of ion-exchanged water By slowly dropping into (417 moles / mol TiO ₂ ) while stirring and hydrolyzing, a yellow transparent TiO ₂ concentration 1 wt% titanium oxide nanoparticle solution (A-1) was obtained. Next, an ethanol solution (B-1) of 0.5 wt% thiabendazole was prepared and mixed with A-1 to obtain an antifungal solution (C-1 to C-3).
(2) Preparation of film The following substrates K-1 to K-4 were used as substrates for thin film preparation.
K-1: Polyester sheet (Lumilar manufactured by Toray Industries, Inc.) Haze ratio 4.35%
K-2: Soda lime glass plate (SLG) Haze ratio 0.56%
K-3: Acrylic plate Haze ratio 0.11%
K-4: Hard PVC plate Haze ratio 2.07%
After the substrate was washed with ethanol and dried, the Mayer bar No. 5 is applied to the solution ((C-1 to C-3), A-1, B-1), dried at room temperature for 1 day, and thin films (D-1 to D-3, DH-1 to DH-). 2) was obtained.
(3) Physical property test The test method of the physical property of the said solution and a thin film is shown below. Table 1 shows the particle size in the solution, the haze ratio of the film, the adhesion of the film and the antifungal effect, Table 2 shows the test result of the water resistance test of the film, and the test of the abrasion resistance test of the film. The results are shown in Table 3.
1. Particle size in solution The particle size in solution was measured with HPPS from Malvern Instruments Ltd. Further, the particle diameter after storage for 3 months at room temperature was also measured.
2. Thin Film Characteristic Test 2-1 Transparency (Haze Ratio)
The transparency of the film was measured with a haze meter.
2-2 Film adhesion (tape peeling test)
Cellotape (registered trademark) was applied to each sample and rubbed with the belly of the finger a plurality of times. Then, when the tape was peeled off, it was evaluated whether the film on the substrate was peeled off.

Evaluation ○: not peeled ×: peeled Thin film property test 3-1 Test method
A CP-added potato dextrose agar medium was prepared in a petri dish, and an anti-corrosive coated substrate was placed on this medium with the coated surface facing upward. After spraying a YED liquid medium aqueous solution containing Aspergillus niger (IFO6341) on the entire surface from above, it is cultured in an incubator (temperature 25 ° C.) for 7 days, and the growth of the cocoon is observed to judge whether the antifungal performance is good or bad. did.
3-2 Evaluation criteria No wrinkle is observed on the substrate: ○
Slight wrinkles were observed on the substrate: △
Many wrinkles were observed on the substrate: ×
3-3 Test sample 1) Anti-coating film 2) Sample after film water resistance test 3) Sample after film abrasion test 3-4 Water resistance test of film In a petri dish containing 50 mL of ion-exchanged water Then, an SLG substrate with a fouling film cut out in an area of 3 cm × 3 cm was put. This sample was allowed to stand at room temperature, immersed for 30 seconds, 1 minute, 2 minutes and 5 minutes, respectively, and then dried at room temperature.
3-5 Membrane Abrasion Resistance Test Using a cotton dampened with ion-exchanged water, the film was rubbed twice and five times on the SLG substrate with a fouling film.

(4) Preparation of antifungal solution (Part 2)
Diisopropoxybisacetylacetonate titanium (Nippon Soda Co., Ltd., T-50, solid content of titanium oxide equivalent 16.5% by weight) 18.24 g, thiabendazole 0.45 g, ethanol 90 g are mixed and dissolved and stirred. However, 190 g of ion-exchanged water (280-fold mol / mol of TiO ₂ ) was slowly added dropwise and hydrolyzed to thereby provide a yellow transparent TiO ₂ concentration 1.5 wt% antifungal solution containing 0.15 wt% thiabendazole ( C-4) was obtained. In addition, 25.74 g of diethoxybisacetylacetonate titanium (solid content equivalent 18.5 g% by weight of titanium oxide), 0.6 g of thiabendazole, and 169 g of ethanol were mixed and dissolved, stirred, and 405 g of ion-exchanged water (374 times mol / TiO ₂ mol) was slowly added dropwise and hydrolyzed to obtain a yellow transparent TiO ₂ concentration 0.8 wt% antifungal solution (C-5) containing 0.1 wt% thiabendazole.

  From the above test results, when the liquid antibacterial agent composition of the present invention is used, a transparent and flexible coating film can be formed, and the antibacterial component is released uniformly on the surface of the coating film for a long period of time. It can be seen that the antibacterial effect can be maintained for a long time without peeling by friction.

Claims (1)

A liquid antibacterial agent composition comprising amphiphilic metal oxide nanoparticles and an antibacterial component.