Surface treatment agent composition

Abstract

To provide a surface treatment agent composition that can extend the antibacterial properties imparted to the surface of an object to various bacterial species. [Solution] A surface treatment agent composition containing (A) particles having an average particle diameter of 1 nm or more and 10 μm or less, containing the following component (a) and component (b) [hereinafter referred to as component (A)], (B) an organic antibacterial agent [hereinafter referred to as component (B)], and water. (a) Components: One or more organic compounds selected from (a-1) to (a-5) below. (a-1) Aliphatic alcohols with 10 to 24 carbon atoms (a-2) Fatty acids with 10 to 24 carbon atoms (a-3) Aliphatic glyceryl ether having an aliphatic hydrocarbon group with 10 to 24 carbon atoms (a-4) Esters of fatty acids with 10 to 24 carbon atoms and polyhydric alcohols (a-5) A quaternary ammonium salt in which one to three groups bonded to the nitrogen atom are hydrocarbon groups having 10 to 24 carbon atoms, and the remaining groups are alkyl groups having 1 to 3 carbon atoms or hydroxyalkyl groups having 1 to 3 carbon atoms. (b) Ingredients: Water-insoluble inorganic antibacterial agent

Description

【Technical Field】 【0001】 The present invention relates to a surface treatment agent composition and a method for imparting antibacterial properties using the same. 【Background Art】 【0002】 In recent years, technologies for imparting antibacterial properties to objects have been studied from the perspective of hygiene awareness. In addition, organic antibacterial agents and water-insoluble inorganic antibacterial agents are used in these technologies. Organic antibacterial agents have immediate effectiveness and high efficacy, but have the characteristic that the target bacterial species are limited. On the other hand, water-insoluble inorganic antibacterial agents have slow efficacy, but are known to exhibit effects in a wide range such as bacteria, mold, and yeast. Therefore, it is required to obtain a surface treatment agent that has both immediate and slow efficacy and has a high antibacterial effect against a wide range of bacterial species by using both antibacterial agents in combination. 【0003】 Patent Document 1 discloses a deodorant composition for textile products containing metal oxide particles having an average particle size of 0.1 to less than 1000 nm and having chemical and physical deodorant effects, and a polyether compound having an HLB of 3 to 13. Patent Document 2 discloses a liquid finishing agent composition for textile products containing (a) one or more metal oxide particles having an average particle size of 0.1 nm or more and less than 1000 nm, and (b) a cationic surfactant mixture containing a tertiary amine, or a neutralized product or quaternized product thereof. 【0004】 In addition, technologies for efficiently imparting functions such as antibacterial properties to objects have also been studied. Patent Document 3 discloses a capsule containing a core containing a beneficial agent and a shell surrounding the core. Patent Document 4 discloses a technology for a cosmetic in which titanium oxide is encapsulated in gel particles. Patent Document 5 discloses a technology for a textile product treatment agent containing a functional compound encapsulated in a capsule having an α-gel structure. Patent Document 6 discloses a technology for a liquid detergent for clothing containing composite oxide fine particles having an average particle size of 1 to 100 nm containing an antibacterial metal component and an inorganic oxide other than the antibacterial metal component, and an organic antibacterial agent. 【Prior Art Documents】 【Patent Document】 【0005】 【Patent Document 1】 Japanese Patent Application Laid-Open No. 2005-207002 【Patent Document 2】 Japanese Patent Application Laid-Open No. 2006-63499 【Patent Document 3】 Japanese Patent Application Laid-Open No. 2022-525996 【Patent Document 4】 International Publication No. 2016 / 080056 【Patent Document 5】 Japanese Patent Application Laid-Open No. 2022-142339 【Patent Document 6】 Japanese Patent Application Laid-Open No. 2006-328170 【Summary of the Invention】 【Problems to be Solved by the Invention】 【0006】 Water-insoluble inorganic antibacterial agents have low solubility in solvents such as water and are further difficult to be uniformly adsorbed on the surface of an object. Therefore, a surface treatment liquid containing both an organic antibacterial agent and a water-insoluble inorganic antibacterial agent cannot fully exhibit the effect of the water-insoluble inorganic antibacterial agent. In particular, when applied to the surface of textile products, there has been no technology that can obtain a satisfactory effect. Therefore, in these technologies, the problem has been that they are not sufficient in terms of antibacterial properties against a wide range of bacterial species. Further, it is an issue to more effectively adsorb a water-insoluble inorganic antibacterial agent onto textile products than the liquid detergent composition for clothing disclosed in Patent Document 6. 【0007】 An object of the present invention is to provide a surface treatment agent composition that can fully exhibit the effect of a water-insoluble inorganic antibacterial agent and broaden the antibacterial properties imparted to the surface of an object, particularly the surface of textile products, against various bacterial species. Another object of the present invention is to provide a method for imparting antibacterial properties against various bacterial species on the surface of an object, particularly the surface of textile products, while fully exhibiting the effect of a water-insoluble inorganic antibacterial agent. 【Means for Solving the Problems】 【0008】 In one embodiment, the present invention provides a surface treatment agent composition containing (A) particles having an average particle diameter of 1 nm to 10 μm, which contain the following component (a) and component (b) [hereinafter referred to as component (A)], (B) an organic antibacterial agent [hereinafter referred to as component (B)], and water. (a) Components: One or more organic compounds selected from (a-1) to (a-5) below. (a-1) Aliphatic alcohols with 10 to 24 carbon atoms (a-2) Fatty acids with 10 to 24 carbon atoms (a-3) Aliphatic glyceryl ether having an aliphatic hydrocarbon group with 10 to 24 carbon atoms (a-4) Esters of fatty acids with 10 to 24 carbon atoms and polyhydric alcohols (a-5) A quaternary ammonium salt in which one to three groups bonded to the nitrogen atom are hydrocarbon groups having 10 to 24 carbon atoms, and the remaining groups are alkyl groups having 1 to 3 carbon atoms or hydroxyalkyl groups having 1 to 3 carbon atoms. (b) Ingredients: Water-insoluble inorganic antibacterial agent 【0009】 In another embodiment, the present invention provides a method for imparting antibacterial properties to the surface of an object by bringing into contact with a treatment solution containing (A) particles having an average particle diameter of 1 nm to 10 μm [hereinafter referred to as (A) component], (B) an organic antibacterial agent [hereinafter referred to as (B) component], and water, the surface of the object. [Effects of the Invention] 【0010】 The surface treatment agent composition and method for imparting antibacterial properties of the present invention can extend the antibacterial properties imparted to the surface of an object, particularly the surface of textile products, to various bacterial species. [Modes for carrying out the invention] 【0011】 In the present invention, "antibacterial" may mean one or more of the following: (I) killing bacteria attached to a target, inhibiting bacterial growth, inhibiting bacterial metabolism and inhibiting the production of metabolites, or (II) killing bacteria attached to a target after treating the surface of the target object by washing, spraying, coating, etc., using a surface treatment liquid, inhibiting bacterial growth, inhibiting bacterial metabolism and inhibiting the production of metabolites. Furthermore, in the present invention, "antibacterial properties" means the properties represented by antibacterial properties as described above. Accordingly, the antibacterial agent in the present invention may be one or more agents selected from bactericides, disinfectants, antibacterial agents, bacteriostatic agents, metabolic inhibitors, and metabolic regulators. Furthermore, in the present invention, "method for imparting antibacterial properties" may be a method for imparting antibacterial properties against various bacterial species on the surface of a target object. Furthermore, in the present invention, "liquid properties of the composition" refers to the liquid properties (viscosity, phase separation, storage stability, etc.) of the surface treatment agent composition of the present invention, which are designed to be within a range that is easy for consumers to use. 【0012】 The reason why the surface treatment agent composition of the present invention was able to extend the antibacterial properties imparted to the surface of an object to various bacterial species is not entirely clear, but it is presumed to be as follows. Generally, water-insoluble inorganic antibacterial agents, such as metal oxides (b), have poor dispersibility in water. Even when an aqueous liquid containing component (b) is brought into contact with the surface of an object, the dispersion state of the aqueous liquid is undesirable, making it difficult to obtain the expected effects of component (b) on the surface of the object. The present invention involves producing specific particles (A) containing component (b) in water using a specific organic compound, which is component (a), and then performing surface treatment by bringing an aqueous dispersion containing these particles (A) into contact with the surface of the object. This allows component (b) to efficiently adhere to the surface of the object, effectively imparting the functions of component (b) to the surface of the object. Furthermore, generally, when imparting antibacterial properties to the surface of an object (for example, if the object is a textile product), surface treatment with organic antibacterial agents such as benzalkonium chloride has been performed, but its effect has been limited. The present invention involves surface treatment by bringing specific particles (A) and an organic antibacterial agent (B) into contact with the surface of the object, thereby extending the antibacterial properties imparted to the surface of the object to various bacterial species. Furthermore, the present invention is not limited to the above-described mechanism of action. 【0013】 [Surface treatment agent composition] The surface treatment agent composition of the present invention may, in one embodiment, contain component (A), component (B), and water. 【0014】 <(A) component> The organic compound of component (a) that constitutes component (A) may be one or more selected from (a-1) to (a-5) below as one form. 【0015】 (a-1) Aliphatic alcohols with 10 to 24 carbon atoms (a-2) Fatty acids with 10 to 24 carbon atoms (a-3) Aliphatic glyceryl ether having an aliphatic hydrocarbon group with 10 to 24 carbon atoms (a-4) Esters of fatty acids with 10 to 24 carbon atoms and polyhydric alcohols (a-5) A quaternary ammonium salt in which one to three groups bonded to the nitrogen atom are hydrocarbon groups having 10 to 24 carbon atoms, and the remaining groups are alkyl groups having 1 to 3 carbon atoms or hydroxyalkyl groups having 1 to 3 carbon atoms. 【0016】 (a-1) may, in one form, be a linear or branched alcohol, more preferably a linear primary alcohol, having 10 or more carbon atoms, preferably 12 or more carbon atoms, more preferably 14 or more carbon atoms, and 24 or less carbon atoms, preferably 20 or less carbon atoms, more preferably 18 or less carbon atoms. (a-1) may, in one form, preferably be one or more selected from caprin alcohol, lauryl alcohol, myristyl alcohol, cetyl alcohol, stearyl alcohol, behenyl alcohol, and oleyl alcohol, more preferably one or more selected from cetyl alcohol and stearyl alcohol, and even more preferably cetyl alcohol. 【0017】 (a-2) may, in one form, be a fatty acid, preferably a linear fatty acid, more preferably a linear saturated fatty acid, having 10 or more carbon atoms, preferably 14 or more carbon atoms, more preferably 16 or more carbon atoms, and 24 or less carbon atoms, preferably 20 or less carbon atoms, more preferably 18 or less carbon atoms. (a-2) may, in one form, preferably be one or more selected from, for example, capric acid, lauric acid, myristic acid, palmitic acid, stearic acid, and behenic acid. 【0018】 (a-3) may, in one form, be an aliphatic glyceryl ether having an aliphatic hydrocarbon group having 10 or more carbon atoms, preferably 14 or more carbon atoms, more preferably 16 or more carbon atoms, and 24 or less carbon atoms, preferably 20 or less carbon atoms, more preferably 18 or less carbon atoms, preferably a linear or branched alkyl group having the aforementioned number of carbon atoms, more preferably a linear alkyl group having the aforementioned number of carbon atoms. (a-3) may, in one form, preferably be one or more selected from monodecyl glyceryl ether, monolauryl glyceryl ether, monomyristyl glyceryl ether, monocetyl glyceryl ether, monostearyl glyceryl ether, and monobehenyl glyceryl ether. 【0019】 (a-4) may, in one form, be an ester of a fatty acid having 10 or more carbon atoms and 24 or fewer carbon atoms, preferably 22 or fewer carbon atoms, more preferably 20 or fewer carbon atoms, and even more preferably 18 or fewer carbon atoms, preferably a straight-chain fatty acid with the aforementioned number of carbon atoms, more preferably a straight-chain saturated fatty acid with the aforementioned number of carbon atoms, and a polyhydric alcohol. The polyhydric alcohol may preferably be one or more selected from glycerin, polyglycerin, sorbitan, and erythritol. The ester of (a-4) may, in one form, be one or more selected from monoesters, diesters, and triesters, or a mixture thereof. Furthermore, the esterification rate of the ester of (a-4) may, in one form, preferably be 10 mol% or more, more preferably 20 mol% or more, and preferably 90 mol% or less, more preferably 85 mol% or less, and the ester of (a-4) may be a mixture of compounds with different esterification rates of the esterified fatty acids. 【0020】 (a-4) may, in one form, be an ester of the fatty acid with one or more polyhydric alcohols selected from glycerol and polyglycerol, represented by the following general formula (1). 【0021】 [ka] 【0022】 [wherein, R a1 is a hydrogen atom or -O(CO)-(CH2)x-CH3, R a2 is a hydrogen atom or -(CO)-(CH2)y-CH3, R a3 is a hydrogen atom or -(CO)-(CH2)z-CH3, x, y, and z are each a number of 8 or more and 22 or less, n is a number of 1 or more and 10 or less, and when n is 2 or more, the ester is such that R a2 may contain both a hydrogen atom and -(CO)-(CH2)y-CH3, R a1 , R a2 , R a3 any one or more of them is a hydrogen atom, provided that R a1 , R a2 , R a3 is excluded when all are hydrogen atoms.] 【0023】 In the formula represented by the general formula (1), n is preferably 1 or more, and preferably 10 or less, more preferably 8 or less, still more preferably 6 or less, even more preferably 5 or less, and even more preferably 3 or less, and even more preferably 2 or less. The ester of the formula may be a single compound with a specific integer for n, or may be a mixture of a plurality of compounds with different n. In the case of a mixture, n in the most abundant compound can be regarded as n in the mixture. 【0024】 In the formula represented by the general formula (1), x, y, and z are each preferably 8 or more, more preferably 10 or more, and preferably 20 or less, more preferably 18 or less. 【0025】 Furthermore, (a-4), as one form, is an ester of the fatty acid and sorbitan, for example, one or more selected from sorbitan monolaurate, sorbitan monomyristate, sorbitan monopalmitate, sorbitan monostearate, sorbitan monobehenate, sorbitan dilaurate, sorbitan dimyristate, sorbitan dipalmitate, sorbitan distearate, sorbitan dibehenate, sorbitan trilaurate, sorbitan trimyristate, sorbitan tripalmitate, sorbitan tristearate, and sorbitan tripehenate. 【0026】 Furthermore, (a-4), as one form, is an ester of the fatty acid and erythritol, for example, one or more selected from erythritol monolaurate, erythritol monomyristate, erythritol monopalmitate, erythritol monostearate, erythritol monobehenate, erythritol dilaurate, erythritol dimyristate, erythritol dipalmitate, erythritol distearate, erythritol dibehenate, erythritol trilaurate, erythritol trimyristate, erythritol tripalmitate, erythritol tristearate, and erythritol tripehenate. 【0027】 (a-5) may, in one form, consist of one to three groups bonded to the nitrogen atom, preferably one of which is a hydrocarbon group having 10 to 24 carbon atoms, preferably 10 to 23 carbon atoms, more preferably 12 to 23 carbon atoms, preferably an alkyl group or alkenyl group, more preferably a linear primary alkyl group or linear primary alkenyl group, and the remaining group may be one or more groups selected from alkyl groups having 1 to 3 carbon atoms or hydroxyalkyl groups having 1 to 3 carbon atoms, preferably a methyl group, an ethyl group, and a hydroxyethyl group. (a-5) may, in one form, preferably one or more selected from stearyltrimethylammonium salt, cetyltrimethylammonium salt, and myristyltrimethylammonium salt. The counteranion may preferably be one or more selected from chloride ions, methyl sulfate ions, and ethyl sulfate ions. The ammonium salt content of (a-5) may be based on the amount obtained by replacing the counteranion with a chloride ion. 【0028】 (a) Component may, in one form, preferably contain two or more selected from (a-1) to (a-5) above, more preferably contain at least one selected from (a-1) to (a-4) and (a-5), even more preferably contain two or more selected from (a-1) to (a-4) and (a-5), and even more preferably contain three or more selected from (a-1) to (a-4) and (a-5). 【0029】 (a) If component (a) contains one or more selected from (a-1) to (a-4) and (a-5) in one form, the content of (a-5) in 100% by mass of component (a) is preferably 5% by mass or more, more preferably 10% by mass or more, even more preferably 20% by mass or more, and even more preferably 30% by mass or more, from the viewpoint of improving product stability, and preferably 90% by mass or less, more preferably 80% by mass or less, even more preferably 70% by mass or less, and even more preferably 60% by mass or less, from the viewpoint of improving adsorption to the surface of the object. In the present invention, the content of (a-5) is the amount based on the compound in which the counteranion is replaced with a chloride ion. Component (a) may, in another form, preferably contain (a-1), (a-4), and (a-5). 【0030】 Component (b) constituting component (A) may, in one form, be a water-insoluble inorganic antibacterial agent. 【0031】 Here, "water-insoluble inorganic antibacterial agent" may refer to an inorganic antibacterial agent that has a solubility of 0.1 g or less per 1 L of water (20°C, pH 7.0). 【0032】 The inorganic antimicrobial agent may, in one form, be one or more antimicrobial metals, for example, preferably one or more selected from silver and copper. 【0033】 Furthermore, one form of inorganic antibacterial agent is an inorganic antibacterial agent in which an antibacterial metal (ion) is supported on a water-insoluble inorganic carrier. Specifically, this includes an inorganic antibacterial agent in which one or more metals (ions) with antibacterial activity, selected from silver, zinc, and copper, are supported on one or more carriers selected from zeolite, silica gel, calcium phosphate, calcium hydroxide phosphate (hydroxyapatite), magnesium oxide, and whiskers. Preferably, it is an inorganic antibacterial agent in which one or more metals selected from silver (ions) and copper (ions) are supported on hydroxyapatite. 【0034】 Furthermore, another form of inorganic antimicrobial agent is an antimicrobial metal oxide, specifically one or more metal oxides selected from zinc oxide, titanium oxide, copper(I) oxide, copper(II) oxide, and silver oxide. 【0035】 (b) Component may, in one form, from the viewpoint of improving antibacterial properties, preferably one or more selected from antibacterial metal oxides, hydroxyapatite supported with silver (ions), hydroxyapatite supported with copper (ions), and antibacterial metals, more preferably one or more selected from zinc oxide, titanium oxide, copper(I) oxide, copper(II) oxide, silver oxide, copper, and silver, and even more preferably zinc oxide. 【0036】 (b) The average primary particle diameter of component (b) can be, in one form, preferably 1 nm or more, more preferably 3 nm or more, even more preferably 5 nm or more, even more preferably 7 nm or more, even more preferably 10 nm or more, from the viewpoint of improving adsorption to the surface of the target object, preferably less than 1000 nm, more preferably 200 nm or less, and from the viewpoint of improving antibacterial properties, preferably 200 nm or less, more preferably 100 nm or less, even more preferably 50 nm or less, even more preferably 40 nm or less. The average primary particle diameter of component (b) can be measured, for example, by ZETASIZER (Nano-ZS) (manufactured by Malvern). Note that the above particle diameters are number-average particle diameters. 【0037】 Component (A) may, in one form, further contain (c) a liquid oil [excluding component (a)] [hereinafter referred to as component (c)]. The term "liquid" means that it is a liquid at 25°C. Component (c) may preferably be one or more selected from hydrocarbon oils, ester oils [excluding (a-4)], and silicone oils. 【0038】 The hydrocarbon oil may, in one form, preferably be one or more selected from squalene, squalane, α-olefin oligomer, light isoparaffin, light liquid isoparaffin, liquid isoparaffin, liquid paraffin, synthetic squalane, vegetable squalane, polybutene, and hydrogenated polyisobutene, and more preferably, from the viewpoint of suitability for manufacturing, it may be one or more selected from synthetic squalane and vegetable squalane. 【0039】 The ester oil (excluding (a-4)) may, in one form, preferably be one or more selected from cetyl octanoate, myristyl lactate, isopropyl myristate, octyldodecyl myristate, isopropyl palmitate, isopropyl adipate, butyl stearate, decyl oleate, isostearyl isostearate, and alkyl benzoate, and from the viewpoint of suitability for production, preferably alkyl benzoate. The alkyl chain of alkyl benzoate may, in one form, preferably have 8 or more carbon atoms, more preferably 10 or more carbon atoms, even more preferably 12 or more carbon atoms, and preferably 24 or fewer carbon atoms, more preferably 22 or fewer carbon atoms, even more preferably 20 or fewer carbon atoms, and even more preferably 18 or fewer carbon atoms. 【0040】 The silicone oil, in one form, is preferably one or more selected from dimethicone, polyether-modified silicone, and amino-modified silicone, and more preferably dimethicone from the viewpoint of suitability for manufacturing. 【0041】 <(A) Manufacturing of ingredient, etc.> Component (A) can be produced in one form by a manufacturing method comprising the steps of mixing component (a), component (b), an optional component (c) with water to produce a suspension, and cooling the suspension. Alternatively, component (A) can be produced in another form by a manufacturing method comprising the steps of an emulsification step of mixing component (a), component (b), and an optional component (c), each heated to, for example, 85°C or higher, with water to form an emulsion, and a cooling step of cooling the formed emulsion to, for example, 40°C or lower. By the above method, an aqueous dispersion containing particles of component (A), preferably emulsion particles, is obtained. The aqueous dispersion may preferably be a suspension, more preferably an oil-in-water emulsion. 【0042】 In the above method, the step of producing the suspension or the emulsification step may use, for example, a homomixer, an ultrasonic emulsifier, a high-pressure emulsifier, etc. In the cooling step, the obtained suspension or emulsion may be continuously and rapidly cooled using, for example, a vibrating stirring and mixing device, a scraping heat exchanger, a static mixer, a plate heat exchanger, a double-tube heat exchanger, etc., or a method of stirring and cooling in a general mixing tank may be used. 【0043】 In 100% by mass of the aqueous dispersion obtained by the above method, the content of component (A) may be, for example, preferably 5% by mass or more, more preferably 10% by mass or more, and preferably 60% by mass or less, and more preferably 50% by mass or less. These contents may be based on the total content (pure content, by mass) of each component in the aqueous dispersion containing component (a), component (b), and any component (c) used in producing component (A). 【0044】 The respective contents of component (a), component (b), and any component (c) in component (A) may be based on the respective contents (pure content, mass%) of the aqueous dispersion containing component (a), component (b), and any component (c) used in the production of component (A). 【0045】 In 100% by mass of component (A), the remainder after removing component (a), component (b), and any component (c) can be water, and this water may be 10 to 25 times the amount of component (a). Therefore, in this invention, the water content in component (A) can be assumed to be 20 times the content of component (a) in the aqueous dispersion used to produce component (A), and the content of component (b) and any component (c) in component (A) can be determined. Furthermore, the total content of component (a), component (b), and any component (c) in 100% by mass of the amount obtained by removing water from the particles of component (A) (the purity of each component) is preferably 60% by mass or more, more preferably 70% by mass or more, even more preferably 80% by mass or more, and preferably 100% by mass or less. 【0046】 The content of component (a) in component (A) may, in one form, be preferably 3% by mass or more, more preferably 5% by mass or more, and preferably 30% by mass or less, more preferably 20% by mass or less, from the viewpoint of manufacture suitability. If a quaternary ammonium salt of (a-5), which is one form of component (a), is included, its content may be an amount based on a compound in which the counteranion is replaced with a chloride ion. 【0047】 The content of component (b) in component (A) may, in one form, be preferably 1% by mass or more, more preferably 2% by mass or more, from the viewpoint of improving product stability, and preferably 60% by mass or less, more preferably 50% by mass or less, even more preferably 40% by mass or less, and even more preferably 30% by mass or less, from the viewpoint of manufacturing suitability. 【0048】 The content of any component (c) in component (A) may, in one form, be preferably 3% by mass or more, more preferably 5% by mass or more, and preferably 30% by mass or less, more preferably 20% by mass or less, from the viewpoint of manufacturing suitability. 【0049】 The content of component (b) relative to the content of component (a) in component (A) can be expressed as a mass ratio [(b) / (a)], which from the viewpoint of machinability is preferably 0.5 or more, more preferably 1 or more, even more preferably 1.5 or more, even more preferably 2 or more, and from the viewpoint of machinability is preferably 10 or less, more preferably 7 or less, even more preferably 6 or less, and even more preferably 4 or less. The mass ratio may be based on the content of component (a) and the content of component (b) (pure content, mass%) in the aqueous dispersion containing component (a) and component (b) used when manufacturing component (A). 【0050】 Component (A) may, in one form, be a particle having a shell phase containing component (a) and a core phase containing component (b) inside the shell phase, or a particle having a shell phase containing component (a) and a core phase containing component (b) inside the shell phase, formed by the method for producing component (A) described above. Furthermore, component (A) may, in another form, more preferably, be a particle having a shell phase containing component (a) and a core phase containing component (b), and further, component (c), inside the shell phase. The shell phase may, in whole or in part, form an α-gel structure of component (a). 【0051】 Component (A), in one form, may have an average particle diameter of 1 nm or more, preferably 5 nm or more, more preferably 10 nm or more, even more preferably 50 nm or more, and 10 μm or less, from the viewpoint of manufacturing method, and preferably 5 μm or less, and more preferably 1 μm or less, from the viewpoint of improving antibacterial properties. The average particle size of component (A) can be calculated using an aqueous dispersion containing particles of component (A), preferably emulsified particles. This dispersion was prepared using deionized water to have a solid content (pure content) of 0.03% by mass, and measured using, for example, a ZETASIZER (Nano-ZS) (manufactured by Malvern). The average particle size of component (A) can be adjusted as appropriate by the manufacturing method (e.g., temperature, rotation speed and rotation rate of the stirring bar). Note that the above particle size is the number-average particle size. 【0052】 In another form, component (A) may have an average particle diameter of 10 nm or more, more preferably 20 nm or more, even more preferably 30 nm or more, even more preferably 40 nm or more, even more preferably 50 nm or more, even more preferably 100 nm or more, even more preferably 200 nm or more, from the viewpoint of improving manufacturing efficiency, and from the viewpoint of improving antibacterial properties, preferably 5 μm or less, more preferably 1 μm or less, even more preferably 800 nm or less, even more preferably 600 nm or less, even more preferably 500 nm or less, and even more preferably 400 nm or less. The average particle diameter of component (A) is the value measured using the method described above. Furthermore, the average particle diameter of component (A) can be appropriately adjusted by the manufacturing method (e.g., temperature, rotation speed and rotation rate of the stirring bar, etc.). 【0053】 <(B) component> (B) Component may, in one form, be an organic antimicrobial agent. Organic antimicrobial agents include, as one form, antimicrobial agents selected from quaternary ammonium salt type compounds; antimicrobial agents selected from compounds having a diphenyl ether skeleton such as triclosan and diclosan; and antimicrobial agents selected from phenol derivatives such as 3-methyl-4-isopropylphenol (common name: isopropylmethylphenol, IPMP), 4-chloro-3,5-dimethylphenol (common name: chlorometaxylenol, PCMX), chlorthymol, carbachlor, chlorophene, dichlorophene, hexachlorophene, chlorocresol, and o-phenylphenol. Antimicrobial agents selected from benzoic acid and benzoic acid derivatives such as parabens; biguanide antimicrobial agents such as chlorhexidine and polyhexamethylene biguanide; carvanilide antimicrobial agents such as triclocarban and phenylamide compounds; amphoteric surfactant antimicrobial agents such as alkylamidopropyldimethylβ-hydroxyethylammonium salt and poly[oxyethylene(dimethylamino)ethylene(dimethylimino)ethylene chloride]; carboxylic acid antimicrobial agents such as polymethacrylic acid, a compound of polymethacrylic acid and zinc sulfate, and nalidixic acid (1-ethyl-1,4-dihydro-7-methyl-4-oxo-1,8-naphthyridine-3-carboxylic acid); benzyl alcohol, phenoxyethanol, phen One or more antibacterial agents selected from the following categories: alcohol-based antibacterial agents such as chloromethyl alcohol and 3-phenylpropanol; amino acid-based antibacterial agents such as phenol-based antibacterial agents and N-alkylyl-L-glutamate silver steel; sulfide-based antibacterial agents such as N,N-dimethyl-N'-(fluorodichloromethylthio)-N''-phenyl sulfide; pyridine-based antibacterial agents such as zinc pyrithione and zinc pyrithione; nitrile-based antibacterial agents such as 2,4,5,6-tetrachloroisophthalonitrile; and polymer-based antibacterial agents such as acrylonitrile-acrylic acid copolymer steel crosslinked products, acrylonitrile copper sulfide complexes, acrylamide-diallylamine hydrochloride copolymers, methacrylate copolymers, fluorine-based polymers, and polyester polymers. 【0054】 Component (B) may preferably be one or more antimicrobial agents selected from quaternary ammonium salt compounds, compounds having a diphenyl ether skeleton, phenol derivatives, and benzoic acid derivatives, from the viewpoint of improving antimicrobial activity and suitability for manufacturing, more preferably one or more antimicrobial agents selected from quaternary ammonium salt compounds and compounds having a diphenyl ether skeleton. The quaternary ammonium salt compound may be the same as (a-5) in component (A), and from the viewpoint of improving antimicrobial activity, it may preferably be a quaternary ammonium salt compound other than (a-5). 【0055】 (B) component may, from the viewpoint of improving antibacterial properties, preferably be one or more selected from (B1) quaternary ammonium salt type compounds [hereinafter referred to as (B1) component] [excluding (a-5) mentioned above] and (B2) compounds having a diphenyl ether skeleton [hereinafter referred to as (B2) component]. 【0056】 Component (B1) may, in one form, preferably be one or more selected from (B1-1) a quaternary ammonium salt type compound represented by the following general formula (2) [hereinafter referred to as component (B1-1)] and (B1-2) a quaternary ammonium salt type compound represented by the following general formula (3) [hereinafter referred to as component (B1-2)]. 【0057】 [ka] 【0058】 [In the formula, R b1 is an alkyl or alkenyl group having 12 to 22 carbon atoms. Y is -COO-, -CONR b5 -, -OCO-, or -NR b5 It is CO-. Here, R b5 R is a hydrogen atom, an alkyl group having 1 to 3 carbon atoms, or a hydroxyalkyl group having 1 to 3 carbon atoms. b2 R is an alkylene group having 1 to 5 carbon atoms. b3 Each of these is independently an alkyl group having 1 to 3 carbon atoms, -R b2 -OH or -R b2 -YR b1 However, if it contains two or more quaternary ammonium salts, at least one Y is -COO- or -OCO-. b4 X is an alkyl group having 1 to 3 carbon atoms or a hydroxyalkyl group having 1 to 3 carbon atoms. - It is a counter-anion. 【0059】 [ka] 【0060】 [In the formula, R b6 R is an alkyl group or alkenyl group having 8 to 24 carbon atoms, b7 is an alkylene group having 1 to 6 carbon atoms or -(OR b11 )n-. Here R b11 R is an ethylene group or a propylene group, n indicates the average number of moles added and is between 1 and 10. T is a -COO-, -OCO-, -CONH-, -NHCO-, or phenylene group. m is 0 or 1. b10 R represents an alkyl group having 1 to 3 carbon atoms, a hydroxyalkyl group having 1 to 3 carbon atoms, a benzyl group, or a phenethyl group. b8 R b10 If is an alkyl group having 1 to 3 carbon atoms or a hydroxyalkyl group having 1 to 3 carbon atoms, then it is an alkyl group or alkenyl group having 8 to 24 carbon atoms, and R b10 If it is a benzyl group or a phenethyl group, it is an alkyl group with 1 to 3 carbon atoms. b9 Z is an alkyl group having 1 to 3 carbon atoms. - It is a counter-anion. 【0061】 Component (B1-1) is, in one form, R in the formula shown in the general formula (2) above. b1 From the viewpoint of improving adhesion performance to the surface of the object and antibacterial properties, it is preferably one or more hydrocarbon groups selected from saturated hydrocarbon groups and unsaturated hydrocarbon groups having 12 to 22 carbon atoms, and more preferably saturated hydrocarbon groups having 15 to 19 carbon atoms. And one or more hydrocarbon groups selected from unsaturated hydrocarbon groups, and from the viewpoint of adhesion performance to the surface of the object, it is even more preferably one or more selected from heptadecyl group, pentadecyl group, 8-heptadecenyl group, and 8,11-heptadecedienyl group. 【0062】 Component (B1-1) is, in one form, R in the formula shown in the general formula (2) above. b2From the viewpoint of improving adsorption to the surface of the target object, preferably each is an alkylene group having 1 to 5 carbon atoms, more preferably an ethylene group or a propylene group, and even more preferably an ethylene group. From the viewpoint of manufacturing suitability, Y is preferably -COO-, -CONR b5 -, -OCO-, or -NR b5 It may be CO-, more preferably -COO- or -OCO-, and even more preferably -COO-. b3 From the viewpoint of manufacturing suitability, preferably an alkyl group having 1 to 3 carbon atoms, -R b2 -OH or -R b2 -YR b1 Comfort-R b2 -YR b1 In this case, Y may also preferably be -COO- or -OCO-, more preferably -COO-. b4 Preferably, it is an alkyl group having 1 to 3 carbon atoms or a hydroxyalkyl group having 1 to 3 carbon atoms, and more preferably, from the viewpoint of suitability for production, it may be a methyl group. 【0063】 Component (B1-1) is, in one form, X in the formula shown in the general formula (2) above. - The counter anion may be a halide ion, preferably a chloride ion, an anion selected from a halide ion, preferably a chloride ion, an alkyl sulfate ion having 1 to 3 carbon atoms, a fatty acid ion having 12 to 18 carbon atoms, and a benzenesulfonate ion which may be substituted with 1 to 3 alkyl groups having 1 to 3 carbon atoms, more preferably an anion selected from an alkyl sulfate ion having 1 to 3 carbon atoms, and even more preferably a monomethyl sulfate ion or a monoethyl sulfate ion. 【0064】 Component (B1-1), in which the preferred Y is -COO-, can be produced in one form by (1) a dehydration esterification reaction of a fatty acid with a trialcanolamine, more preferably triethanolamine, having a hydroxyalkyl group having 1 to 3 carbon atoms, more preferably 2 or 3 carbon atoms, or (1') a transesterification reaction of the amine with a lower alcohol ester of a fatty acid, followed by (2) a quaternization reaction with an alkylating agent. In this case, component (B1-1) can be produced by using a mixture of fatty acids with different carbon number or degrees of unsaturation as the fatty acid, or a mixture of lower alcohol esters of fatty acids with different carbon number or degrees of unsaturation of the fatty acid portion as the fatty acid lower alcohol ester. 【0065】 (B1-1) The fatty acid or fatty acid mixture used in the production of component (B1-1) may, in one form, preferably be one or more fatty acids selected from stearic acid, palmitic acid, oleic acid, and linoleic acid or mixtures thereof, and may be palm oil or fatty acids having a composition derived therefrom, soybean oil or fatty acids having a composition derived therefrom, and olive oil or fatty acids having a composition derived therefrom. 【0066】 The acid value of the fatty acid or fatty acid mixture used in the production of component (B1-1) may, in one form, be preferably 180 mg KOH / g or more, more preferably 200 mg KOH / g or more, and preferably 240 mg KOH / g or less, and more preferably 210 mg KOH / g or less, from the viewpoint of the composition's liquid properties. The iodine value of the fatty acid or fatty acid mixture used in the production of component (B-1) may, in one form, be preferably 30 g / 100 g or more, more preferably 40 g / 100 g or more, and preferably 100 g / 100 g or less, and more preferably 95 g / 100 g or less, from the viewpoint of the composition's liquid properties. The acid value and iodine value of the fatty acid or fatty acid mixture are values ​​measured by the method described in the "Iwanami Dictionary of Physics and Chemistry," 4th edition, Iwanami Shoten. 【0067】 Component (B1-2) is, in one form, in the formula shown in the general formula (3) above, R b6From the viewpoint of improving antibacterial properties, the alkyl or alkenyl group may preferably have 8 or more carbon atoms, more preferably 10 or more, and more preferably 24 or fewer carbon atoms, more preferably 22 or fewer carbon atoms, and more preferably an alkyl group with carbon atoms within the above range. 【0068】 (B1-2) Component, in one form, is R in the formula shown in the general formula (3) above. b7 This is an alkylene group having 1 to 6 carbon atoms or -(OR b11 )n- may be R b7 When the group is an alkylene group, the number of carbon atoms may preferably be 2 or more and 3 or less from the viewpoint of improving antibacterial properties. b7 ga-(OR b11 )n-, R b11 The group is preferably an alkylene group having 2 to 3 carbon atoms, more preferably an ethylene group, and n represents the average number of moles added, preferably 1 or more, preferably 10 or less, and more preferably 5 or less. 【0069】 Component (B1-2) may, in one form, be represented by the general formula (3) above, where T is -COO-, -OCO-, -CONH-, -NHCO-, or a phenylene group. m may be 0 or 1. From the viewpoint of improving antibacterial properties, T is preferably -COO- or -OCO-, and m is preferably 0. 【0070】 (B1-2) Component, in one form, is R in the formula shown in the general formula (3) above. b10 This may be an alkyl group having 1 to 3 carbon atoms, a hydroxyalkyl group having 1 to 3 carbon atoms, a benzyl group, or a phenethyl group. b8 R b10 If is a benzyl group or a phenethyl group, it may preferably be an alkyl group having 1 to 3 carbon atoms, R b10 If the group is an alkyl group having 1 to 3 carbon atoms or a hydroxyalkyl group having 1 to 3 carbon atoms, it may preferably be an alkyl group or alkenyl group having 5 to 24 carbon atoms. 【0071】 (B1-2) Component, in one form, is preferably R in the formula shown in the general formula (3) above, from the viewpoint of improving antibacterial activity. b10 is a benzyl group and R b8 is a methyl group, R b10 is a methyl group and R b8 is an alkyl or alkenyl group having 5 to 24 carbon atoms, R b10 is a methyl group and R b8 R may be an alkyl group having 1 to 3 carbon atoms or a hydroxyalkyl group having 1 to 3 carbon atoms. b8 If the alkyl or alkenyl group has 5 to 24 carbon atoms, the number of carbon atoms may preferably be 8 or more, more preferably 10 or more, and preferably 24 or less, and more preferably 22 or less. 【0072】 (B1-2) Component, in one form, is R in the formula shown in the general formula (3) above. b9 The group may be an alkyl group having 1 to 3 carbon atoms, and from the viewpoint of improving antibacterial properties, it may preferably be a methyl group. 【0073】 (B1-2) Component, in one form, is Z in the formula shown in the general formula (3) above. - The counteranion may be one or more counteranions selected from halide ions, chloride ions, alkyl sulfate ions having 1 to 3 carbon atoms, fatty acid ions having 12 to 18 carbon atoms, and benzenesulfonate ions which may be substituted with 1 to 3 alkyl groups having 1 to 3 carbon atoms; more preferably, one or more counteranions selected from methyl sulfate ions, ethyl sulfate ions, and halide ions; and even more preferably, chloride ions. 【0074】 (B1-2) Component, in one form, specifically, is a quaternary ammonium salt in which one or two of the groups bonded to the nitrogen atom may be hydrocarbon groups having 8 to 24 carbon atoms, and the remaining group is an alkyl group, hydroxyalkyl group, or benzyl group having 1 to 3 carbon atoms. More specifically, a monoalkyl type quaternary ammonium salt in which one of the groups bonded to the nitrogen atom may be hydrocarbon groups having 8 to 24 carbon atoms, and three of the groups are alkyl groups, hydroxyalkyl groups, or benzyl groups having 1 to 3 carbon atoms is preferred, as is a dialkyl type quaternary ammonium salt in which two of the groups bonded to the nitrogen atom may be hydrocarbon groups having 8 to 24 carbon atoms, and two of the groups are alkyl groups, hydroxyalkyl groups, or benzyl groups having 1 to 3 carbon atoms. 【0075】 Component (B1-2) is, in one form, preferably a quaternary ammonium salt in which one or two of the groups bonded to the nitrogen atom are linear alkyl groups having 16 or 18 carbon atoms or long-chain alkyl fatty acid ester groups having 16 or 18 carbon atoms, and the remainder are alkyl groups having 1 to 3 carbon atoms, hydroxyalkyl groups, or benzyl groups [hereinafter referred to as component (B1-2-1)]. 【0076】 Component (B1-2-1) may, in one form, preferably be a quaternary ammonium salt in which one or two of the groups bonded to the nitrogen atom are linear alkyl groups having 16 or 18 carbon atoms, and the remaining two are alkyl groups, hydroxyalkyl groups, or benzyl groups having 1 to 3 carbon atoms. More preferably, from the viewpoint of improving adhesion to the surface of the object, for example, it may be a dilong-chain alkyl quaternary ammonium salt in which two of the groups bonded to the nitrogen atom are linear alkyl groups having 16 or 18 carbon atoms, and the remaining two are alkyl groups or hydroxyethyl groups having 1 or 2 carbon atoms. Examples of counteranions include halide ions such as bromide ions, iodide ions, and chloride ions, methyl sulfate ions, hydroxide ions, and acetate ions, and preferably chloride ions. 【0077】 Furthermore, component (B1-2-1) may, in one form, preferably be a di-long-chain alkyl fatty acid ester quaternary ammonium salt in which one or two of the groups bonded to the nitrogen atom are long-chain alkyl fatty acid ester groups with 16 to 18 carbon atoms, and the remainder are alkyl groups having 1 or 2 carbon atoms or hydroxyethyl groups. More preferably, from the viewpoint of improving adhesion to the surface of the object, for example, it may be a di-long-chain alkyl fatty acid ester quaternary ammonium salt in which two of the groups bonded to the nitrogen atom are long-chain alkyl fatty acid ester groups with 16 to 18 carbon atoms, and the remaining two are alkyl groups having 1 or 2 carbon atoms or hydroxyethyl groups. The counteranion may, in one form, preferably be one or more selected from halide ions such as bromide ions, iodide ions, and chloride ions, methyl sulfate ions, hydroxide ions, and acetate ions, more preferably chloride ions. 【0078】 Furthermore, component (B1-2) may, in another form, preferably be a quaternary ammonium salt in which one or two of the groups bonded to the nitrogen atom are linear alkyl groups having 8 to 15 carbon atoms or long-chain alkyl fatty acid ester groups having 8 to 15 carbon atoms, and the remainder are alkyl groups having 1 to 3 carbon atoms, hydroxyalkyl groups, or benzyl groups [hereinafter referred to as component (B2-2)]. 【0079】 Component (B1-2-2) may, in one form, preferably from the viewpoint of improving antibacterial properties, consist of a dilong-chain alkylquaternary ammonium salt in which two of the groups bonded to the nitrogen atom are linear long-chain alkyl groups having 8 to 15 carbon atoms, and the remaining two are alkyl groups having 1 or 2 carbon atoms or hydroxyethyl groups. More preferably, from the viewpoint of improving antibacterial properties, one of the groups bonded to the nitrogen atom may be a linear long-chain alkyl group having 8 to 15 carbon atoms, and the remaining two are dilong-chain alkylquaternary ammonium salts in which alkyl groups having 1 or 2 carbon atoms, hydroxyethyl groups, or benzyl groups. 【0080】 Component (B2) may, in one form, be an antimicrobial agent selected from compounds containing halogen atoms and having a diphenyl ether skeleton, and more preferably one or more selected from diclosan and triclosan from the viewpoint of improving antimicrobial activity and product stability, and more preferably diclosan from the viewpoint of ease of product design. 【0081】 <Composition of surface treatment agent composition, etc.> The surface treatment agent composition of the present invention may, in one form, contain particles of component (A), component (B), and water. When manufacturing the surface treatment agent composition of the present invention, component (A) may, in one form, preferably, be an aqueous dispersion containing component (A). The aqueous dispersion may preferably be a suspension, more preferably an oil-in-water emulsion. 【0082】 The water may preferably be deionized water or water sterilized with hypochlorous acid (hypochlorite-sterilized water). Furthermore, a portion of the water may be derived from an aqueous dispersion containing the aforementioned component (A), and may contain impurities introduced during the manufacturing process of component (A). 【0083】 The content of component (A) may be based on the total content (pure content, mass%) of each component in the aqueous dispersion containing component (a), component (b), and any component (c) used in the production of component (A). (A) The content of component (A) may, in one form, be preferably 0.1% by mass or more, more preferably 0.5% by mass or more, even more preferably 1% by mass or more, and even more preferably 1.5% by mass or more, from the viewpoint of improving antibacterial properties, and from the viewpoint of improving product stability, preferably 50% by mass or less, more preferably 40% by mass or less, even more preferably 30% by mass or less, even more preferably 10% by mass or less, and particularly preferably 5% by mass or less. If a quaternary ammonium salt type compound of (a-5), which is one form of component (a), is included, its content is the amount based on the compound in which the counteranion is replaced with a chloride ion. 【0084】 (B) The content of component (B) may, in one form, be preferably 0.01% by mass or more, more preferably 0.03% by mass or more, even more preferably 0.05% by mass or more, even more preferably 0.1% by mass or more, even more preferably 0.15% by mass or more, and from the viewpoint of improving antibacterial properties, preferably 30% by mass or less, more preferably 20% by mass or less, even more preferably 18% by mass or less. If a quaternary ammonium salt type compound, which is one form of component (B), is included, its content is based on the amount obtained by replacing the counteranion with a chloride ion. 【0085】 The water content may, in one form, be the remainder of the surface treatment agent composition of the present invention excluding component (A), component (B), and any optional component described later, and may be preferably 20% by mass or more, more preferably 50% by mass or more, and preferably 99.9% by mass or less, more preferably 95% by mass or less, and even more preferably 90% by mass or less in the composition. The above range may include water derived from an aqueous dispersion containing component (a), component (b), and any optional component (c) used in the production of component (A). The above range does not include water contained in component (A). That is, the surface treatment agent composition of the present invention may be such that the sum of the above water content, the content of component (a) (pure), the content of component (b) (pure), the content of any optional component (c) (pure), the content of component (B) (pure), and the content of any optional component described later (pure) equals 100. 【0086】 In one embodiment, the surface treatment agent composition of the present invention has a mass ratio [(A) / (B)] of the content of component (A) to the content of component (B) which is preferably 0.05 or more, more preferably 0.1 or more, even more preferably 0.2 or more, and even more preferably 0.4 or more, from the viewpoint of improving antibacterial activity against a wide range of bacterial species, and may also be preferably 100 or less, more preferably 50 or less, even more preferably 30 or less, and even more preferably 20 or less. The content of component (A) is based on the total content (pure content, mass%) of each component in the aqueous dispersion containing component (a), component (b), and an optional component (c) used when producing component (A). 【0087】 In one embodiment, the surface treatment agent composition of the present invention may have a pH at 25°C that is preferably 1.5 or higher, more preferably 2 or higher, and preferably 9 or lower, more preferably 7 or lower, even more preferably 6 or lower, and even more preferably 5 or lower, from the viewpoint of improving product stability. The pH is measured at 25°C in accordance with item 8.3 of JIS K 3362; 2008. The pH is adjusted by an alkaline agent and an acidic agent. 【0088】 In one embodiment, the surface treatment agent composition of the present invention may have a viscosity at 30°C of preferably 5 mPa·s or more, more preferably 7 mPa·s or more, and preferably 300 mPa·s or less, and more preferably 200 mPa·s or less, from the viewpoint of the liquid properties of the composition. The viscosity of the surface treatment agent composition of the present invention can be measured, for example, using a B-type viscometer (model number; TVB-10, manufactured by Toki Sangyo Co., Ltd., using rotor No. 2, 60 r / min). 【0089】 <(C) component> The surface treatment agent composition of the present invention may, in one embodiment, further contain one or more selected from (C) polyoxyalkylene alkyl or alkenyl ether type nonionic surfactants, polyoxyalkylene alkylamine type nonionic surfactants, and alkyl or alkenyl polyglucoside type nonionic surfactants [hereinafter referred to as component (C)]. Component (C), in one embodiment, may preferably be a polyoxyalkylene alkyl or alkenyl ether type nonionic surfactant from the viewpoint of manufacturing suitability. 【0090】 If component (C) is, in one form, a polyoxyalkylene alkyl or alkenyl ether, then from the viewpoint of improving the liquid properties and product stability of the composition, the average number of added moles of oxyethylene groups is preferably 3 or more, more preferably 10 or more, even more preferably 20 or more, and preferably 80 or less, more preferably 70 or less, and even more preferably 60 or less. From the viewpoint of improving the liquid properties and product stability of the composition, the number of carbon atoms is preferably 8 or more, more preferably 10 or more, and preferably 20 or less, and more preferably 18 or less, and the alkyl or alkenyl group is preferably an alkyl group. 【0091】 When component (C) is a polyoxyalkylene alkylamine in one form, from the viewpoint of improving the liquid properties and product stability of the composition, the alkyl group of the polyoxyalkylene alkylamine may preferably have 3 to 30 carbon atoms, more preferably 4 to 24 carbon atoms, and even more preferably 5 to 20 carbon atoms. Also, the alkylene group of the polyoxyalkylene may preferably have 2 to 4 carbon atoms, more preferably 2 to 3 carbon atoms, and even more preferably 2 carbon atoms. Furthermore, the average number of moles of polyoxyalkylene added may preferably be 2 to 20, more preferably 2 to 15, and even more preferably 2 to 10. 【0092】 If component (C) is, in one form, an alkyl or alkenyl polyglucoside type surfactant, then, from the viewpoint of the liquid properties of the composition and the product stability, the alkyl or alkenyl glycoside type surfactant may preferably be a compound represented by the following general formula (c1). 【0093】 R 1b -(OR 2b ) x G y (c1) [In the formula, R 1b R is an alkyl or alkenyl group having 8 to 18 carbon atoms. 2b [where is an alkylene group with 2 to 4 carbon atoms, G is a residue derived from a reducing sugar, x is a number between 0 and 6 on average, and y is a number between 1 and 10 on average.] 【0094】 In general formula (c1), R 1b From the viewpoint of the composition's liquid properties and product stability, R may be an alkyl group or alkenyl group, preferably a linear alkyl group, having 8 or more carbon atoms, preferably 10 or more, and from the viewpoint of the composition's liquid properties and product stability, having 18 or fewer carbon atoms, preferably 16 or fewer, more preferably 14 or fewer. In general formula (c1), R 2b From the viewpoint of the composition's liquid properties and product stability, x may be an alkylene group having 2 to 4 carbon atoms, preferably an ethylene group or a propylene group, more preferably an ethylene group. In general formula (c1), x may be a number with an average value of 0 or more and an average value of 6 or less, preferably 3 or less. In general formula (c1), y may be a number with an average value of 1 or more and an average value of 10 or less, preferably 5 or less, more preferably 2 or less. 【0095】 In general formula (c1), G is a residue derived from a reducing sugar, and the reducing sugar used as the raw material for G may be either an aldose or a ketose. Examples of reducing sugars used as the raw material for G include triose (3 carbon atoms), tetrose (4 carbon atoms), pentose (5 carbon atoms), and hexose (6 carbon atoms). Specific examples of aldoses include apiose, arabinose, galactose, glucose, lyxose, mannose, glucose, aldose, idose, talose, and xylose. Specific examples of ketoses include fructose. From the viewpoint of suitability for manufacturing, the reducing sugar used as the raw material for G in this invention is preferably aldopentose (5 carbon atoms) or aldohexose (6 carbon atoms), more preferably aldohexose (6 carbon atoms), and even more preferably glucose. 【0096】 In the surface treatment agent composition of the present invention, the content of component (C) may, in one form, be preferably 0.5% by mass or more, more preferably 1% by mass or more, from the viewpoint of improving product stability and antibacterial properties, and preferably 5% by mass or less, more preferably 4% by mass or less, and even more preferably 3.5% by mass or less, from the viewpoint of the liquid properties of the composition. 【0097】 <(D) component> The surface treatment agent composition of the present invention may, in one embodiment, further contain (D) a water-soluble inorganic salt [hereinafter referred to as component (D)]. (D) Component may, from the viewpoint of improving product stability, preferably be one or more selected from calcium chloride, sodium chloride, and magnesium chloride, and preferably calcium chloride. In the present invention, "water-soluble" means having the property of dissolving 1 g or more in 100 g of deionized water at 20°C. 【0098】 In the surface treatment agent composition of the present invention, the content of component (D) may, in one form, be preferably 0.01% by mass or more, more preferably 0.05% by mass or more, from the viewpoint of improving product stability, and preferably 1% by mass or less, more preferably 0.5% by mass or less. 【0099】 The surface treatment agent composition of the present invention may contain components other than those listed above (A) to (D), to the extent that it does not impair the effects of the present invention. For example, it may contain fragrances, fragrance precursors, fragrance-encapsulated microcapsules, preservatives, chelating agents, defoaming agents, solvents, oils, neutralizing agents, and softening agents, to the extent that it does not impair the effects of the present invention. 【0100】 Furthermore, the surface treatment agent composition of the present invention may contain an aqueous solvent, such as ethylene glycol, polyethylene glycol, glycerin, 1,2-propanediol, 1,3-propanediol, ethanol, etc., to the extent that it does not impair the effects of the present invention. The aqueous solvent does not contain the aforementioned component (B) (alcohol-based antibacterial agent, etc.). 【0101】 In one embodiment, the surface treatment agent composition of the present invention allows a treatment solution containing component (A), component (B), and water to be brought into contact with the surface of an object. In another embodiment, the surface treatment agent composition of the present invention allows a treatment solution containing an aqueous dispersion of component (A) and component (B) and water to be brought into contact with the surface of an object. 【0102】 The objects that come into contact with the surface treatment agent composition of the present invention are not particularly limited, but examples include hard articles and textile products. That is, the surface treatment agent composition of the present invention may preferably be a surface treatment agent composition for hard surfaces, or it may be a surface treatment agent composition for textile products. In this invention, the target surface refers to the surface of a hard article (hard surface) or the surface of a single fiber constituting a textile product. 【0103】 Furthermore, because the surface treatment agent composition of the present invention has antibacterial properties, it can be used in one form to disinfect hard surfaces and textile products used not only in general households but also in medical and nursing care settings. At the same time, it can be used to disinfect bacteria that are commonly found in clothing and laundry environments and are involved in recurring odors such as the musty smell of damp textiles and odors that reappear when moisture is absorbed. In other words, the surface treatment agent composition of the present invention may preferably be an antibacterial agent composition for hard surfaces or an antibacterial agent composition for textile products. 【0104】 The bacteria targeted by the surface treatment composition of the present invention include, as one form, bacteria of the genera Moraxella, Acinetobacter, Pseudomonas, Sphingomonas, Ralstonia, Cupriavidus, Cyclobacter, and Serratia. These include Gram-negative bacteria such as bacteria of the genera Escherichia and Burkholderia; Gram-positive bacteria such as bacteria of the genera Bacillus, Staphylococcus, Micrococcus and Corynebacterium; and yeasts such as yeasts of the genera Saccaromyces and Rhodotorula. 【0105】 Of the Gram-negative bacteria, Gram-positive bacteria, and yeasts mentioned above, Moraxella, Pseudomonas (both Gram-negative bacteria), and Micrococcus (Gram-positive bacteria) are present and proliferate on textile products during the washing process (e.g., damp towels), and the odor produced by these multiple types of bacteria is the cause of the so-called damp odor. The surface treatment composition of the present invention may be useful in suppressing the generation of the aforementioned damp odor. That is, the present invention may be useful for antibacterial action against Moraxella, Pseudomonas, and Micrococcus bacteria attached to textile products. 【0106】 The surface treatment agent composition of the present invention may, in one form, be for hard surfaces of hard articles. That is, the present invention may be a surface treatment agent composition for hard surfaces. Hard articles include, in one form, hard articles having hard surfaces such as bathrooms, toilets, kitchens, floors, doorknobs, tableware, food processing equipment, desks, chairs, walls, etc. These hard articles may be used in homes, or in public facilities or factories, such as swimming pools, bathhouses, restaurants, hospitals, livestock facilities, etc. Hard surfaces to which the surface treatment agent composition of the present invention is applied include, for example, floors, walls, ceilings, furniture, etc. in living areas such as living rooms, rooms, kitchens, bathrooms, and toilets. Furthermore, hard surfaces to which the surface treatment agent composition of the present invention is applied may be, for example, hard surfaces of floors, walls, ceilings, furniture, equipment, etc. in facilities where a high level of hygiene management is required, such as hospitals or nursing care facilities. 【0107】 Hard articles include pipes, parts and other components of food processing equipment, and hard articles around the kitchen. Hard articles around the kitchen may be articles used in the vicinity of the kitchen, and specifically may include (1) storage places for food, dishes and cooking utensils such as refrigerators and cupboards, (2) food preparation areas such as drains, countertops, range hoods, sinks, gas ranges, and microwave ovens, and (3) floors and walls around them. For convenience, in this invention, these will be referred to as "hard articles around the kitchen." Furthermore, hard surfaces that are the target surfaces of this invention, and hard surfaces around the kitchen, may include plastics (including silicone resins, etc.), metals, ceramics, glass, wood, and combinations thereof. 【0108】 The surface treatment agent composition of the present invention may, in one form, be for use in textile products. That is, the present invention may be a surface treatment agent composition for textile products. 【0109】 The fibers that make up the textile product may be either hydrophobic or hydrophilic. Examples of hydrophobic fibers include protein-based fibers (milk protein casein fiber, Promix, etc.), polyamide-based fibers (nylon, etc.), polyester-based fibers (polyester, etc.), polyacrylonitrile-based fibers (acrylic, etc.), polyvinyl alcohol-based fibers (vinylon, etc.), polyvinyl chloride-based fibers (polyvinyl chloride, etc.), polyvinylidene chloride-based fibers (vinylidene, etc.), polyolefin-based fibers (polyethylene, polypropylene, etc.), polyurethane-based fibers (polyurethane, etc.), and polyvinyl chloride / polyvinyl alcohol copolymer-based fibers (Polycloral, etc.). Examples of hydrophilic fibers include seed hair fibers (cotton, kapok, etc.), bast fibers (hemp, flax, ramie, cannabis, jute, etc.), leaf vein fibers (Manila hemp, sisal, etc.), coconut fibers, rush, straw, animal hair fibers (wool, mohair, cashmere, camel hair, alpaca, vicuña, angora, etc.), silk fibers (domestic silk, wild silk), feathers, and cellulose fibers (rayon, polynosic, cupro, acetate, etc.). 【0110】 Textile products include woven fabrics, knitted fabrics, nonwoven fabrics, and other fabrics using the aforementioned hydrophobic and hydrophilic fibers, as well as various textile products made using these fabrics, such as undershirts, T-shirts, dress shirts, blouses, slacks, hats, handkerchiefs, towels, knitwear, socks, underwear, tights, and bedding, where bacterial growth is a concern. 【0111】 [Method for producing surface treatment agent composition] The surface treatment agent composition of the present invention can be obtained, for example, by mixing component (A) and component (B). That is, the present invention provides a method for producing a surface treatment agent composition by mixing component (A), component (B), water, optionally component (C), and optionally component (D). Specific examples and preferred examples of component (A), component (B), component (C), and component (D) may be the same as those of the surface treatment agent composition of the present invention described above. 【0112】 In the production of the surface treatment agent composition of the present invention, for example, an aqueous dispersion containing component (A) may be added in the surface treatment agent composition of the present invention in an amount of, for example, preferably 1% by mass or more, more preferably 3% by mass or more, preferably 30% by mass or less, and more preferably 25% by mass or less. 【0113】 [Methods for imparting antibacterial properties] As one embodiment, the present invention provides a method for imparting antibacterial properties to an object surface, which involves bringing a treatment solution containing (A) particles having an average particle diameter of 1 nm to 10 μm containing (A) and (B) (hereinafter referred to as (A) component), (B) an organic antibacterial agent (hereinafter referred to as (B) component), and water into contact with the surface of an object. 【0114】 In the method for imparting antibacterial properties of the present invention, the average particle size of component (A), component (B), water, optional component, and component (A) in the treatment liquid brought into contact with the surface of the object may be the same as the average particle size of component (A), component (B), optional component, and component (A) described in the surface treatment liquid composition of the present invention described above. In the method for imparting antibacterial properties of the present invention, the surface treatment agent composition brought into contact with the surface of the object may be the same as the specific example or preferred embodiment of the surface treatment agent composition of the present invention described above. In the method for imparting antibacterial properties of the present invention, the specific example or preferred embodiment of the surface of the object or bacteria to which the treatment liquid or the surface treatment agent composition of the present invention is brought into contact may be the same as the surface of the object or bacteria considered to be present on the surface of the object described in the surface treatment agent composition of the present invention. Furthermore, the treatment liquid used in the method for imparting antibacterial properties of the present invention may be the surface treatment agent composition of the present invention. 【0115】 The treatment solution of the present invention may, in one form, contain component (A), component (B), and water. That is, the treatment solution of the present invention may, in one form, be prepared by mixing component (A), component (B), and water. The treatment solution of the present invention may, in one form, contain an aqueous dispersion containing component (A), component (B), and water as needed. That is, the treatment solution of the present invention may, in one form, be prepared by mixing an aqueous dispersion containing component (A), component (B), and water as needed. The treatment solution of the present invention may, in another form, contain a surface treatment agent composition containing component (A), component (B), and water, and water as needed. That is, the treatment solution of the present invention may, in one form, be prepared by mixing a surface treatment agent composition containing component (A), component (B), and water, and water as needed. 【0116】 The processing solution of the present invention may, in one form, contain component (A) in the processing solution in an amount of 0.1% by mass or more, more preferably 0.5% by mass or more, even more preferably 1% by mass or more, and even more preferably 1.5% by mass or more, from the viewpoint of improving antibacterial properties, and preferably 50% by mass or less, more preferably 40% by mass or less, and even more preferably 30% by mass or less, from the viewpoint of improving product stability, and component (B) in the processing solution in an amount of 0.01% by mass or more, more preferably 0.03% by mass or more, even more preferably 0.05% by mass or more, from the viewpoint of improving antibacterial properties, and preferably 30% by mass or less, more preferably 20% by mass or less, and even more preferably 18% by mass or less, from the viewpoint of improving product stability, and the remainder of the processing solution after removing the content of component (A) and the content of component (B) may be the content of water. 【0117】 Furthermore, the content of component (A) may, in one form, be based on the total content (pure content, mass%) of each component in the aqueous dispersion containing component (a), component (b), and an optional component (c) used in the production of component (A). If a quaternary ammonium salt compound of (a-5), which is a form of component (a), is included, its content is based on the amount obtained by replacing the counter anion with a chloride ion. If a quaternary ammonium salt compound of component (B), which is a form of component (B), is included, its content is based on the amount obtained by replacing the counter anion with a chloride ion. In addition, the surface treatment agent composition of the present invention may be diluted with water or the like so that the content of components (A) and (B) in the treatment solution is as described above. 【0118】 In one embodiment, the processing solution of the present invention has a mass ratio [(A) / (B)] of the content of component (A) to the content of component (B) which is preferably 0.05 or more, more preferably 0.1 or more, even more preferably 0.2 or more, even more preferably 0.4 or more, and also preferably 100 or less, more preferably 50 or less, even more preferably 30 or less, and even more preferably 20 or less, from the viewpoint of improving antibacterial activity against a wide range of bacterial species. The content of component (A) is based on the total content (pure content, mass%) of each component in the aqueous dispersion containing component (a), component (b), and an optional component (c) used when producing component (A). 【0119】 In one embodiment, the processing solution of the present invention optionally contains component (C), wherein component (C) is contained in the processing solution in an amount of 0.5% by mass or more, more preferably 1% by mass or more, from the viewpoint of improving product stability and antibacterial properties, and preferably 5% by mass or less, more preferably 4% by mass or less, from the viewpoint of the liquid properties of the composition. In one embodiment, the processing solution of the present invention optionally contains component (D), wherein component (D) is contained in the processing solution in an amount of 0.01% by mass or more, more preferably 0.05% by mass or more, from the viewpoint of improving product stability, and preferably 1% by mass or less, more preferably 0.5% by mass or less, from the viewpoint of improving product stability. 【0120】 In the method for imparting antibacterial properties according to the present invention, the object to which the treatment solution of the present invention is brought into contact may, in one form, preferably be a rigid article or a textile product, more preferably a textile product. 【0121】 In the method for imparting antibacterial properties of the present invention, when the object is a textile product, as one embodiment, the textile product and the treatment solution of the present invention are brought into contact such that the ratio of component (b) in the treatment solution of the present invention to the textile product is preferably 0.1 mg or more, more preferably 1 mg or more, and preferably 1000 mg or less, and more preferably 500 mg or less per 1 kg of textile product. 【0122】 In the method for imparting antibacterial properties of the present invention, when the object is a hard article, one embodiment is that the ratio of component (b) in the treatment solution of the present invention to the surface of the hard article is such that the ratio is 1 m of the surface of the hard article. 2 The hard article surface and the treatment solution of the present invention are brought into contact so that the amount of the solution is preferably in the range of 0.01 mg or more, more preferably 0.1 mg or more, and preferably 1000 mg or less, and more preferably 100 mg or less. 【0123】 In the method for imparting antibacterial properties of the present invention, one form of the method for bringing the treatment solution of the present invention into contact with the surface of an object is to spray the treatment solution of the present invention onto the surface of the object, to pour the treatment solution of the present invention onto the surface of the object and apply it using a nonwoven fabric, woven fabric, brush, etc., to apply it to the surface of the object using a nonwoven fabric, woven fabric, brush, etc., impregnated with the treatment solution of the present invention, or to immerse an article having an object surface in the treatment solution of the present invention. In the method for imparting antibacterial properties of the present invention, after bringing the treatment solution of the present invention into contact with the surface of the object, it may be allowed to dry as is. 【0124】 When spraying the treatment solution of the present invention onto the surface of an object, the treatment solution of the present invention may be filled into a container equipped with a sprayer and sprayed in droplet form. The container equipped with a sprayer may be a manual spraying device that does not use a propellant, such as a trigger-type spray container or a pump-type spray container. Preferably, the container equipped with a sprayer is a trigger-type spray capable of spraying the contents in droplet form, and more preferably, a trigger-type spray equipped with a mechanism for spraying the contents in droplet form. 【0125】 In the method for imparting antibacterial properties of the present invention, when the treatment solution of the present invention is sprayed or applied to the surface of an object and brought into contact with it, in one form, the ratio of component (b) in the treatment solution of the present invention to the surface of the hard article is such that the ratio of the hard article surface is 1 m 2 The processing solution of the present invention, which is manufactured to contain preferably 0.01 mg or more, more preferably 0.1 mg or more, and preferably 1000 mg or less, and more preferably 500 mg or less per unit, is brought into contact with the surface of the object. 【0126】 Furthermore, in the method for imparting antibacterial properties according to the present invention, when the surface of the object is immersed in the treatment liquid and brought into contact with it, one form thereof is when the ratio of component (b) in the treatment liquid of the present invention to the surface of the hard article is such that the ratio of the hard article surface is 1 m 2 The processing solution of the present invention, which is manufactured to contain preferably 0.1 mg or more, more preferably 1 mg or more, and preferably 1000 mg or less, and more preferably 500 mg or less per unit, is brought into contact with the surface of the object. 【0127】 Furthermore, in the method for imparting antibacterial properties of the present invention, if the object is a textile product, one embodiment may be, for example, the treatment solution of the present invention may be brought into contact with the surface of the textile product, which is the surface of the object, during the rinsing stage of the washing process of the textile product. For example, the method may involve immersing the textile product in the treatment solution of the present invention, which is prepared by adding the surface treatment agent composition of the present invention to rinsing water, and then dehydrating and drying the textile product, thereby imparting antibacterial properties to the textile product. 【0128】 When the treatment solution of the present invention is brought into contact with the textile product during the rinsing stage of the washing process of the textile product, the treatment solution of the present invention may be prepared, for example, by adding the surface treatment agent composition of the present invention to the rinse water, and the bath ratio [amount of treatment solution of the present invention / mass of textile product] is preferably 3 or more, more preferably 5 or more, and preferably 25 or less, more preferably 20 or less, and the textile product can be treated with antibacterial properties under the above conditions. In the present invention, rinsing may be performed once or twice, and even if the surface treatment agent composition of the present invention is added to the rinse water during the single rinse to prepare the treatment solution of the present invention, the effect of imparting antibacterial properties in the present invention can be fully exhibited. 【0129】 Furthermore, in the method for imparting antibacterial properties according to the present invention, if the object is a textile product, the textile product may be immersed in the treatment solution of the present invention for a period of time of preferably 1 minute or more, more preferably 2 minutes or more, and preferably 3 minutes or more, and more preferably 10 minutes or less. After immersion for the aforementioned period, the textile product may be dehydrated and dried. 【0130】 In the method for imparting antibacterial properties according to the present invention, a textile product treated by contacting it with the treatment solution of the present invention can be used for desired applications by dewatering and drying it. [Examples] 【0131】 <Ingredients used> [(A) component] (a) component (a-1): Cetyl alcohol (manufactured by Higher Alcohol Industry Co., Ltd.) (a-2); Stearic acid (a-3); Monostearyl Glyceryl Ether (a-4-1): Glyceryl behenate (Sunsoft No. 8100, manufactured by Taiyo Kagaku Co., Ltd.) (a-4-2): Sorbitan fatty acid (18 carbon atoms) diester (Sunsoft No. 63C, manufactured by Taiyo Kagaku Co., Ltd.) (a-5): Trimethylstearylammonium chloride aqueous dispersion (Cotamin 86W, manufactured by Kao Corporation) ·(b) Component (b-1): Zinc oxide, average primary particle size 25 nm (Teika MZ-500, manufactured by Teika Co., Ltd.) (b-2): Silicone-treated zinc oxide microparticles, average primary particle size 25 nm (Teika MZ-504R3M, manufactured by Teika Co., Ltd.) (b-3): Nano zinc oxide, average primary particle size 50 nm (ZnO-610, manufactured by Sumitomo Osaka Cement Co., Ltd.) ·(c) Component (c): Alkyl benzoate (12-15 carbon atoms) ester (FinsolvTN, manufactured by Finetex) 【0132】 [(B) Component] (B1-1): Quaternary ammonium compound synthesized by the following synthesis method: Surfactant described in Japanese Patent Publication No. 2018-44256 【0133】 <Synthesis Example 1: Synthesis of Component (B-1)> A condensate mainly composed of N,N-dialkanoyloxyethyl-N-hydroxyethylamine was obtained by dehydrating and esterifying a fatty acid with an acid value of 206.9 mgKOH / g derived from palm oil with triethanolamine at a reaction molar ratio of 1.65 / 1 (fatty acid / triethanolamine). Next, the amine value of this condensate was measured, and quaternization was performed using 0.95 equivalents of dimethyl sulfuric acid according to a standard method to obtain a quaternary ammonium salt mixture (B-1) mainly composed of N,N-dialkanoyloxyethyl-N-hydroxyethyl-N-methylammonium methyl sulfate and containing 10% by mass of ethanol. However, the term "alkanoyl" here includes not only saturated fatty acids but also residues derived from unsaturated fatty acids, such as alkenoyl, because alkanoyl is a fatty acid residue from the palm oil raw material. The manufacturing procedure and reaction conditions described above were carried out in accordance with Synthesis Example 2 of Japanese Patent Publication No. 2010-209493. 【0134】 (B1-2): Benzalkonium chloride (alkyl(C12-16) benzyldimethylammonium chloride, Sanizol B-50), manufactured by Kao Corporation. (B2): Dichrosan (4,4'-dichloro-2-hydroxydiphenyl ether), manufactured by BASF. 【0135】 [(C) component] Emulgen 129L: Polyoxyethylene lauryl ether, manufactured by Kao Corporation. [(D) component] Inorganic salts: Calcium chloride <Other ingredients> Preservative: 1,2-Benzisothiazolin-3-one (Proxel BDN® (manufactured by Arch Chemical Japan Co., Ltd.)) Antifoaming agent: DOW CORNING TORAY 1315 ANTIFOAM CONCENTRATE (trademark), manufactured by Toray Dow Corning Corporation. Chelating agent: Trisodium methylglycine diacetate (Trilon M Liquid®, BASF Japan Ltd.) (The amount of trisodium methylglycine diacetate used was adjusted to match the value in Table 2.) 【0136】 [Method for producing surface treatment agent composition] (1) Manufacturing of component (A) Each component listed in Table 1 was mixed in the amounts listed in Table 1 while being heated to 60°C. Water heated to 60°C was then added to prepare a suspension. The suspension was put into a high-pressure emulsifier (product name "Econizer LABO02", manufactured by Sanmaru Machinery Industry Co., Ltd.) and homogenized, then cooled to 40°C to produce aqueous dispersions 1 to 3 containing the particles (A1) to (A3), which are component (A). Each of the obtained aqueous dispersions containing the particles of component (A) was adjusted with deionized water to a solid content of 0.03% by mass, and the average primary particle size was calculated by measuring with a ZETASIZER (Nano-ZS) (manufactured by Malvern). The results are shown in Table 1. 【0137】 [Table 1] 【0138】 (2) Method for producing surface treatment agent composition Each surface treatment composition was prepared by mixing the components listed in Table 2 in the amounts specified in Table 2. In the table, the composition of each component is expressed as the mass percentage of the pure content of each component. Note that the content of component (A) is the total content (pure content) of components (a), (b), and (c) in Table 1. The pH (at 25°C) and viscosity of Examples 1-3 were confirmed to be within the ranges described above. The measurement methods used were those described in the main text. 【0139】 [Evaluation of surface treatment agent compositions] (1) Preparation of test cloth 1 Deionized water, sterilized by boiling at 100°C for 120 minutes, was mixed with calcium chloride dihydrate and magnesium chloride hexahydrate to achieve a hardness of 5 DH° (Ca / Mg = 7 / 3, mass ratio). Sodium bicarbonate was then added to achieve an alkalinity of 80 mg / L, and the pH was further adjusted to 7 with hydrochloric acid. 600 g of the prepared water and 3 g of a 1% by mass aqueous solution of an anionic surfactant (linear alkylbenzene sulfonate with 10-14 carbon atoms) were placed in a stirring-type washing machine (turgotometer, MS-8212, manufactured by Ueshima Seisakusho). 30 g of 6 cm x 6 cm cotton knit fabric (cotton fabric 2003 purchased from Tanigashira Shoten) was then added, and the mixture was stirred for 12 minutes. After stirring, the mixture was dewatered for 2 minutes in a twin-tub washing machine (HITACHI P-H35L). The test cloth, after pre-washing, was again placed in an agitator-type washing machine. 600g of the prepared water and 0.14g of the surface treatment agent composition listed in Table 2 were added, and the machine was agitated at 85rpm for 5 minutes. After agitation, the cloth was dewatered again in a twin-tub washing machine for 2 minutes and then laid flat to dry in a constant temperature room (23°C, 40%) for 12 hours. The surface treatment agent composition listed in Table 2 was added immediately after agitation. 【0140】 (2) Antimicrobial activity evaluation The fungus used was Moraxella osloensis, isolated from clothing. 0.4g of test cloth treated with the surface treatment agent composition of the present invention and 0.4g of untreated test cloth were each treated with a bacterial solution (initial bacterial count 1.0 × 10⁶). 5 0.2 mL of CFU / mL was inoculated and incubated at 37°C for 18 hours. 20 mL of LP diluent (manufactured by Nippon Pharmaceutical Co., Ltd.) was added, and sonication was performed for 10 minutes to extract the bacteria. The extract was serially diluted, mixed onto SCD-LP agar medium (manufactured by Nippon Pharmaceutical Co., Ltd.), and incubated at 37°C for 1 day. The number of colonies obtained was measured, and the antibacterial activity value was calculated by subtracting the common logarithm of the number of viable cells in each example or comparative example from the common logarithm of the number of viable cells obtained from a test cloth not treated with the surface treatment agent composition of the present invention (logarithm), and evaluated according to the evaluation criteria below. The evaluation results for each surface treatment agent composition are shown in Table 2 as "Antibacterial Activity Evaluation 1". 【0141】 [Evaluation Criteria] ◎: Antibacterial activity value of 2.0 or higher ○: Antibacterial activity value is 1.0 or higher and less than 2.0 △: Antibacterial activity value is 0.5 or higher but less than 1.0 ×: Antibacterial activity value is less than 0.5 【0142】 Furthermore, the evaluation results for each surface treatment agent composition, in which the bacteria used in (2) above was replaced with Micrococcus luteus instead of Moraxella osloensis, are shown in Table 2 as "Antibacterial Evaluation 2". The bacteria used were Micrococcus luteus isolated from a washing machine drum. Furthermore, the evaluation results for each surface treatment agent composition, in which the bacteria used in (2) above was replaced with Pseudomonas putida instead of Moraxella osloensis, are shown in Table 2 as "Antibacterial Evaluation 3". The bacteria used were Pseudomonas putida isolated from clothing. 【0143】 [Table 2] 【0144】 The surface treatment compositions of Examples 1-3 in Table 2 were confirmed to suppress the growth of both Gram-negative and Gram-positive bacteria, as confirmed by the results of antimicrobial evaluations 1, 2, and 3. This suggests that the antimicrobial activity against Gram-positive bacteria, which was weak with organic antimicrobial agents alone (Comparative Examples 1-3), was improved with the surface treatment compositions of the present invention, and that the antimicrobial activity against Gram-negative bacteria, which was not observed with organic antimicrobial agents alone (Comparative Examples 1-3), was improved with the surface treatment compositions of the present invention. Thus, it can be said that the surface treatment compositions of the present invention can acquire a broad antimicrobial spectrum. Furthermore, it was confirmed that the surface treatment compositions of Examples 1-3 in Table 2 could suppress the growth of the bacteria used in the antimicrobial tests (Moraxella osloensis, Micrococcus luteus, and Pseudomonas putida). The odor produced by these bacteria is the cause of the so-called damp odor, meaning that the surface treatment compositions of the present invention are useful in suppressing the generation of the damp odor. 【0145】 Table 3 shows example formulations of suspensions of aqueous dispersions 4 to 6 containing each particle (A4) to (A6), which are component (A), and can be manufactured by the same method as the suspension manufactured in Table 1. Similar antibacterial properties can be obtained by replacing these aqueous dispersions with aqueous dispersions 1 to 3 of the surface treatment agent composition in Table 2. 【0146】 [Table 3]

Claims

[Claim 1] A surface treatment agent composition comprising (A) particles having an average particle diameter of 1 nm or more and 10 μm or less, containing the following component (a) and component (b) [hereinafter referred to as component (A)], (B) an organic antibacterial agent [hereinafter referred to as component (B)], and water. (a) Components: One or more organic compounds selected from (a-1) to (a-5) below. (a-1) Aliphatic alcohols with 10 to 24 carbon atoms (a-2) Fatty acids with 10 to 24 carbon atoms (a-3) Aliphatic glyceryl ether having an aliphatic hydrocarbon group with 10 to 24 carbon atoms (a-4) Esters of fatty acids with 10 to 24 carbon atoms and polyhydric alcohols (a-5) A quaternary ammonium salt in which one to three groups bonded to the nitrogen atom are hydrocarbon groups having 10 to 24 carbon atoms, and the remaining groups are alkyl groups having 1 to 3 carbon atoms or hydroxyalkyl groups having 1 to 3 carbon atoms. (b) Ingredients: Water-insoluble inorganic antibacterial agent [Claim 2] (a) The surface treatment agent composition according to claim 1, wherein the component contains at least one selected from (a-1) to (a-4) and (a-5). [Claim 3] (a) The surface treatment agent composition according to claim 2, wherein the content of (a-5) in the component is 5% by mass or more and 90% by mass or less. [Claim 4] (b) The surface treatment agent composition according to claim 1 or 2, wherein component (b) is one or more selected from zinc oxide, titanium oxide, copper(I) oxide, copper(II) oxide, silver oxide, copper, and silver. [Claim 5] The surface treatment agent composition according to claim 1 or 2, wherein component (B) is one or more selected from quaternary ammonium salt type compounds and compounds having a diphenyl ether skeleton. [Claim 6] The surface treatment agent composition according to claim 1 or 2, wherein component (A) comprises a shell phase containing component (a) and a core phase containing component (b) inside the shell phase. [Claim 7] The surface treatment agent composition according to claim 6, wherein the core phase further contains (c) a liquid oil [excluding component (a)] [hereinafter, component (c)]. [Claim 8] A surface treatment agent composition according to claim 1 or 2, for use in textile products or hard surfaces. [Claim 9] A method for imparting antibacterial properties to the surface of an object by bringing a treatment solution containing (A) components and (B) below, having an average particle size of 1 nm to 10 μm [hereinafter referred to as (A) components], (B) an organic antibacterial agent [hereinafter referred to as (B) components], and water into contact with the surface of the object. (a) Components: One or more organic compounds selected from (a-1) to (a-5) below. (a-1) Aliphatic alcohols with 10 to 24 carbon atoms (a-2) Fatty acids with 10 to 24 carbon atoms (a-3) Aliphatic glyceryl ether having an aliphatic hydrocarbon group with 10 to 24 carbon atoms (a-4) Esters of fatty acids with 10 to 24 carbon atoms and polyhydric alcohols (a-5) A quaternary ammonium salt in which one to three groups bonded to the nitrogen atom are hydrocarbon groups having 10 to 24 carbon atoms, and the remaining groups are alkyl groups having 1 to 3 carbon atoms or hydroxyalkyl groups having 1 to 3 carbon atoms. (b) Ingredients: Water-insoluble inorganic antibacterial agent [Claim 10] The method for imparting antibacterial properties according to claim 9, wherein the article having the surface of the object is a hard article or a textile product.

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