Highly heat-resistant antibacterial glass composition, its manufacturing method, and ejected product using the highly heat-resistant antibacterial glass composition

Abstract

The present invention discloses a non-eluting antibacterial glass composition which is made of ingredients harmless to the human body, has high heat resistance and high water resistance, and can semi-permanently maintain its antibacterial function, and a method for producing antibacterial glass powder using the same. The present invention relates to a novel antibacterial glass composition that contains SiO2 as a glass former as a main component, and also contains glass powder containing ZnO and SnO as antibacterial components, and a silane coupling agent having a cationic functional group.

Description

[Technical field]

[0001] The present invention relates to a highly heat-resistant antibacterial glass composition, a method for producing the same, and an ejected product using the highly heat-resistant antibacterial glass composition. [Background technology]

[0002] Microorganisms such as germs, fungi, and bacteria are ubiquitous in our living spaces, such as on sinks, refrigerator shelves, washing machines, etc. If these microorganisms enter the human body, they can cause life-threatening infections.

[0003] Thus, although various bacteria can exist depending on the environment, Pseudomonas aeruginosa is a major problem in moist environments where there is a lot of contact with water. These Pseudomonas aeruginosa bacteria can grow even in minimal nutritional conditions, so they have a very wide range of growth. In particular, various microorganisms are present everywhere, such as in moist environments in hospitals, medical instruments, and even disinfectant solution storage containers, which is also the main cause of biofilm formation.

[0004] Therefore, antibacterial glass compositions capable of controlling the spread of microorganisms are required for household items such as washstands, refrigerator shelves, ovens, washing machines, etc., as well as hospital furniture, medical instruments, disinfectant solution storage containers, etc.

[0005] Conventional antibacterial glass compositions include glasses that have a water-insoluble glass structure and ionic or crystalline phase components that dissolve for antibacterial purposes.

[0006] As a result, in conventional antibacterial glass compositions, in order to exhibit antibacterial activity, ions or crystal phases that exhibit antibacterial performance must be eluted, which limits the long-term durability of the antibacterial activity and poses safety problems when applied to ejected articles that come into contact with food and beverages.

[0007] In addition, conventional antibacterial glass compositions have a mechanism for maintaining antibacterial properties by dissolving Ag. Although Ag has excellent antibacterial properties, the ejected product may be discolored by Ag when exposed to light for a long period of time. Therefore, conventional antibacterial glass compositions have limitations in their applicability to various environments. Summary of the Invention [Problem to be solved by the invention]

[0008] An object of the present invention is to provide an antibacterial glass composition which is non-elutable and has high heat resistance by adjusting each component and the component ratio.

[0009] An object of the present invention is to provide an antibacterial glass composition which is made of ingredients harmless to the human body, has high heat resistance and high water resistance, and maintains its antibacterial function semi-permanently.

[0010] Another object of the present invention is to ensure antibacterial activity capable of effectively eliminating Pseudomonas aeruginosa, which is a major problematic pathogen in moist environments where water is present.

[0011] The object of the present invention is not limited to the object mentioned above, and other objects and advantages of the present invention not mentioned can be understood from the following description and can be more clearly understood from the embodiments of the present invention. In addition, it can be easily understood that the object and advantages of the present invention can be realized by the means and combinations thereof as set forth in the claims. [Means for solving the problem]

[0012] The antibacterial glass composition according to the present invention contains an antibacterial glass powder having a novel composition and a silane coupling agent having a cationic functional group, and has high heat resistance and high water resistance, and can maintain antibacterial function semi-permanently.

[0013] More specifically, the antibacterial glass composition according to the present invention contains an antibacterial glass powder containing, based on 100 weight % of the antibacterial glass powder, 26 to 50 weight % of SiO2, 0.5 to 4 weight % of one or more of B2O3 and P2O5, 15 to 27 weight % in total of Na2O and K2O, 3 to 20 weight % of one or more of CaO, MgO and WO3, and 22 to 44 weight % of one or more of ZnO and SnO, and a silane coupling agent having a cationic functional group.

[0014] The composition of the present invention does not develop antibacterial power as the antibacterial agent is decomposed, but has a mechanism in which antibacterial metal ions positively charge the surface of the glass, attracting negatively charged bacteria and preventing them from growing, thereby making it possible for the present invention to secure semi-permanent antibacterial power.

[0015] As a result, when the antibacterial glass composition of the present invention is used as an additive for plastic injection molding, it not only has excellent antibacterial activity against Escherichia coli and Staphylococcus aureus, but also effectively removes Pseudomonas aeruginosa, which is a major problem in moist environments where water is present. Effect of the Invention

[0016] The antibacterial glass composition according to the present invention is made of ingredients which are harmless to the human body, has high heat resistance and high water resistance, and can maintain its antibacterial function semi-permanently.

[0017] The antibacterial glass composition of the present invention contains SiO2, a glass former, as a main component, and the antibacterial metal ions added to the glass make the surface charge (zeta potential) of the glass positively charged. This attracts bacteria, which are normally negatively charged, creating an electrically charged atmosphere in which bacteria cannot grow, and thus killing the bacteria.

[0018] As a result, when the non-eluting antibacterial glass composition of the present invention is used as an additive for plastic injection molding, it not only has excellent antibacterial activity against Escherichia coli and Staphylococcus aureus, but also can effectively remove Pseudomonas aeruginosa, which is a major problem in moist environments where water is present.

[0019] In addition, the antibacterial glass composition according to the present invention has a form in which the above-mentioned inorganic antibacterial glass and antibacterial organic substance are combined, and thus has high thermal stability and antibacterial durability, and compensates for the slow antibacterial effect, which is a drawback of inorganic antibacterial agents.

[0020] The above-mentioned effects and specific effects of the present invention will be described in conjunction with the following description of the preferred embodiment of the invention. [Brief description of the drawings]

[0021] [Figure 1] FIG. 2 is a process flow diagram showing a method for producing a non-eluting antibacterial glass powder according to an embodiment of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0022] The above-mentioned objects, features and advantages will be described in detail below with reference to the accompanying drawings, so that those skilled in the art to which the present invention pertains can easily implement the technical concept of the present invention. In describing the present invention, if a detailed description of known techniques according to the present invention is deemed to obscure the gist of the present invention, the detailed description will be omitted. Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. The same reference numerals in the drawings are used to indicate the same or similar components.

[0023] As used herein, singular expressions include plural expressions unless the context clearly indicates otherwise. In this application, the terms "comprise" or "include" should not be interpreted as including all of the multiple components or multiple steps described in the specification, but should be interpreted as including some of the components or steps that may not be included, or may further include additional components or steps.

[0024] Hereinafter, a novel antibacterial glass composition having high heat resistance according to several embodiments of the present invention and a method for producing an antibacterial glass powder using the same will be described.

[0025] The antibacterial glass composition according to the embodiment of the present invention has non-elution properties by adjusting each component and the component ratio, and thus ensures semi-permanent durability of antibacterial activity.

[0026] In addition, the antibacterial glass composition according to the embodiment of the present invention is made of ingredients that are harmless to the human body, has high heat resistance and high water resistance, and can maintain its antibacterial function semi-permanently.

[0027] In addition, the non-eluting antibacterial glass composition according to the embodiment of the present invention does not exhibit antibacterial activity as the antibacterial agent is decomposed, but rather, antibacterial metal ions positively charge the surface of the glass, thereby attracting negatively charged bacteria and preventing them from growing, thereby ensuring semi-permanent antibacterial activity.

[0028] As a result, when the non-eluting antibacterial glass composition of the present invention is used as an additive for plastic injection products, it not only has excellent antibacterial activity against Escherichia coli and Staphylococcus aureus, but also can effectively remove Pseudomonas aeruginosa, which is a major problem in moist environments where water is present.

[0029] In addition, the antibacterial glass composition according to the present invention has a form in which the above-mentioned inorganic antibacterial glass and antibacterial organic substance are combined, and thus has high thermal stability and antibacterial durability, and compensates for the slow antibacterial effect, which is a drawback of inorganic antibacterial agents.

[0030] Therefore, the antibacterial glass composition according to the embodiment of the present invention contains an antibacterial glass powder containing, based on 100 weight % of the antibacterial glass powder, 26 to 50 weight % of SiO2, 0.5 to 4 weight % of one or more of B2O3 and P2O5, 15 to 27 weight % in total of Na2O and K2O, 3 to 20 weight % of one or more of CaO, MgO and WO3, and 22 to 44 weight % of one or more of ZnO and SnO, and a silane coupling agent having a cationic functional group.

[0031] Here, in order for the composition of the present invention to become glass, it must contain a glass former, and in order to easily realize glass under glass melting conditions (about 900 to 1600°C), it must contain a modifier oxide to melt the glass former into a homogeneous and amorphous form.

[0032] The most commonly used glass formers commercially are SiO2, B2O3, and P2O5, and glass made of a large amount of B2O3 and P2O5 has strong hygroscopicity, and many OH groups derived from moisture in the air are adsorbed on the surface, resulting in a negative surface charge, which acts as a factor that inhibits the antibacterial activity of the glass.

[0033] Thus, the present invention provides a novel silicate-based antimicrobial glass composition that contains intentionally low additions of B2O3 and P2O5 and is based on the glass former SiO2.

[0034] The antibacterial glass powder contained in the antibacterial glass composition of the present invention contains 26 to 50 wt % of SiO2 and 0.5 to 4 wt % of one or more of B2O3 and P2O5.

[0035] SiO2 is a glass former that enables vitrification and is a core component that acts as the structural framework of glass. Although SiO2 does not directly affect the components that exert antibacterial properties, it is advantageous in forming fewer OH groups on the glass surface compared to P2O5, a representative glass former, and in making the glass surface positively charged by the metal ions in the glass.

[0036] The SiO2 may be added in a content ratio of 26 to 50% by weight based on 100% by weight of the antibacterial glass powder according to the present invention. If the SiO2 is added in a large amount exceeding 50% by weight, the viscosity of the glass increases when melted, which causes a problem of reduced workability and yield during the cooling process. On the other hand, if the SiO2 is added in an amount less than 26% by weight, the structure of the glass is weakened, which causes a problem of reduced water resistance.

[0037] On the other hand, glass made of a large amount of B2O3 and P2O5 has high hygroscopicity, and many OH groups derived from moisture in the air are adsorbed on the surface, resulting in a negative surface charge. This acts as a factor that inhibits the antibacterial activity of the glass. Therefore, the present invention has developed a new antibacterial glass composition that is mainly composed of SiO2, a glass former, by minimizing the addition of B2O3 and P2O5.

[0038] That is, although SiO2 strengthens the glass structure, when used as a single component as a glass former, the viscosity becomes too high during melting, and a very high melting temperature is required to produce homogeneous glass. Therefore, by adding small amounts of B2O3 and P2O5 together within a range that does not weaken the water resistance of the glass, the viscosity of the melt can be reduced, and the workability and yield of glass production can be improved.

[0039] Thus, the antibacterial glass powder of the present invention contains 0.5 to 4 wt % of one or more of B2O3 and P2O5.

[0040] If one or more of B2O3 and P2O5 are added in a large amount exceeding 4 wt%, the water resistance of the glass may decrease and it may become easy for dissolution to occur in water.On the other hand, if one or more of B2O3 and P2O5 are added in an amount less than 0.5 wt%, the workability and yield in glass production may decrease.

[0041] Alkali oxides such as Na2O and K2O are oxides that act as non-crosslinking network modifiers in glass compositions. Although these components cannot be vitrified by themselves, they can be vitrified when mixed with glass formers such as SiO2 and B2O3 in a certain ratio. If only one of these components is included in a glass composition, it can weaken the durability of the glass within the range where vitrification is possible. However, if two types of components are included together in a glass composition, the durability of the glass can be further improved depending on the ratio. This is called the mixed alkali effect.

[0042] Therefore, Na2O and K2O are added in a total content ratio of 15 to 27 wt% based on 100 wt% of the antibacterial glass powder according to the present invention. If Na2O and K2O are added in a large amount exceeding 27 wt% in total, the thermal properties of the glass composition may be deteriorated. On the other hand, if Na2O and K2O are added in a total content of less than 15 wt%, it is difficult to control the valence of components such as ZnO, and the antibacterial properties may be deteriorated.

[0043] In addition, preferably, the Na2O content and the K2O content can satisfy the following [relationship].

[0044] 0.5≦(Na2O content) / (K2O content)≦1.5 [Relationship formula]

[0045] If the Na2O content and the K2O content do not satisfy the above relationship, the effect of lowering the melting point due to the eutectic point decreases, and it may become difficult to vitrify the antibacterial glass composition.

[0046] Next, the antibacterial glass powder of the present invention contains 3 to 20% by weight of one or more of CaO, MgO and WO3.

[0047] At least one of CaO, MgO and WO3 is an oxide that acts as a non-crosslinking network modifier in the glass composition, similar to an alkali oxide. If at least one of CaO, MgO and WO3 is added in a large amount exceeding 20% ​​by weight, the thermal properties of the glass composition may be deteriorated. Conversely, if at least one of CaO, MgO and WO3 is added in an amount less than 3% by weight, the structure of the glass may be weakened, the durability may be reduced and the antibacterial performance may also be reduced.

[0048] Next, the antibacterial glass powder of the present invention contains at least one of ZnO and SnO as a component that exhibits antibacterial performance.

[0049] At least one of ZnO and SnO is contained in an amount of 22 to 44% by weight based on 100% by weight of the antibacterial glass powder according to the present invention. When at least one of ZnO and SnO is added in an amount of less than 22% by weight, the antibacterial properties of the glass composition are difficult to exhibit. On the other hand, when at least one of ZnO and SnO is added in a large amount exceeding 44% by weight, the durability and thermal properties of the glass composition may be deteriorated. Preferably, the ZnO can be added in an amount of 30% by weight or more.

[0050] Conventional antibacterial compositions contain various antibacterial components such as Ag and Ag oxides to exert antibacterial power (coverage against various bacteria). However, when an injection product to which an Ag component is applied is exposed to light for a long period of time, color changes occur. The present invention exerts antibacterial power using Zn and Sn without containing Ag or Ag oxides, thereby suppressing the above-mentioned side effects. Although it is preferable that the antibacterial glass composition of the present invention does not contain Ag or Ag oxides as much as possible, it may contain Ag3PO4 or AgNO3 in an amount of 0.1 wt% or less based on 100 wt% of the antibacterial glass powder, if necessary.

[0051] Next, the antibacterial glass composition of the present invention contains a silane coupling agent having a cationic functional group in addition to the above-mentioned antibacterial glass powder.

[0052] Here, the cationic functional group may include at least one selected from the group consisting of a quaternary ammonium salt, an imidazolium group, a piperidinium group, a morpholinium group, a pyridinium group, and a pyrrolidinium group.

[0053] The silane coupling agent may include one or more of γ-aminopropyltrimethoxysilane, γ-aminopropyltriethoxysilane, γ-glycidoxypropyltrimethoxysilane, γ-glycidoxypropyltrimethoxysilane, γ-mercaptopropyltrimethoxysilane, γ-mercaptopropyltriethoxysilane, and a silane coupling agent represented by the following chemical formula:

[0054] RO(CH2CHO) n CH2CH2CH2CSi(OR')3 [Chemical formula]

[0055] [In the above formula, R is a methyl group, an ethyl group or a hydrogen atom; R' is a methyl or ethyl group; n is a constant from 1 to 10.

[0056] Thus, the present invention includes an antibacterial glass powder, which is an inorganic antibacterial agent, and also includes a silane coupling agent having a cationic functional group to maximize the performance of the antibacterial glass powder. More specifically, the silane coupling agent having a cationic functional group is bonded to the surface of the antibacterial glass powder. The cationic functional group exhibits antibacterial properties by interacting with a negatively charged bacterial cell membrane. In addition, when the antibacterial glass composition of the present invention is applied to a polymer, it is advantageous in improving the mechanical properties and dispersibility of the polymer. The silane coupling agent is used as an intermediate that connects the antibacterial inorganic material (glass powder) and the organic material (cationic functional group).

[0057] The silane coupling agent having a cationic functional group may be contained in an amount of preferably 0.1 to 20 parts by weight, and most preferably 0.1 to 5 parts by weight, based on 100 parts by weight of the antibacterial glass powder.

[0058] Hereinafter, a method for producing an antibacterial glass composition according to an embodiment of the present invention will be described with reference to the accompanying drawings.

[0059] FIG. 1 is a process flow diagram showing a method for producing an antibacterial glass composition according to an embodiment of the present invention.

[0060] As shown in FIG. 1, a method for manufacturing an antimicrobial glass composition according to an embodiment of the present invention includes a mixing step (S110), a melting step (S120), a cooling step (S130), and a grinding step (S140).

[0061] mixture In the mixing step (S110), first, an antibacterial glass powder is produced, and the antibacterial glass powder contains, based on 100 weight % of the antibacterial glass powder, 26 to 50 weight % of SiO2, 0.5 to 4 weight % of one or more of B2O3 and P2O5, 15 to 27 weight % in total of Na2O and K2O, 3 to 20 weight % of one or more of CaO, MgO and WO3, and 22 to 44 weight % of one or more of ZnO and SnO.

[0062] The preferred composition ratio of the antibacterial glass powder is as described above.

[0063] Melting In the melting step (S120), the antimicrobial glass composition is melted.

[0064] In this stage, melting is preferably carried out at 1,100 to 1,400°C for 1 to 60 minutes. If the melting temperature is less than 1,200°C or the melting time is less than 1 minute, the antibacterial glass composition is not completely melted, which may cause immiscibility of the molten glass. On the other hand, if the melting temperature exceeds 1,300°C or the melting time exceeds 60 minutes, excessive energy and time are required, which is not economical.

[0065] cooling In the cooling step (S130), the molten antibacterial glass composition is cooled to room temperature.

[0066] In this stage, cooling is preferably performed in a furnace. If air or water cooling is applied, excessive internal stress may be formed in the antibacterial glass, which may lead to cracks. Therefore, cooling by furnace cooling is preferred.

[0067] Crushing In the pulverization step (S140), the cooled antibacterial glass is pulverized. At this time, it is preferable to use a dry pulverizer for pulverization. For example, the dry pulverizer may be a ball mill process or a jet mill process. In these pulverization steps, a silane coupling agent having a cationic functional group is added to the antibacterial glass powder.

[0068] The above-mentioned grinding process finely grinds the antibacterial glass to produce an antibacterial glass composition containing the antibacterial glass powder and the silane coupling agent having a cationic functional group. These antibacterial glass compositions preferably have an average diameter of 30 μm or less, and more preferably, an average diameter of 15 to 25 μm.

[0069] Through the above steps (S110 to S140), the antibacterial glass composition according to the embodiment of the present invention can be manufactured.

[0070] [Example] The present invention will be described in more detail below with reference to preferred embodiments thereof, however, these are merely preferred examples of the present invention and should not be construed as limiting the present invention in any way.

[0071] Contents not described here can be fully inferred from a technical standpoint by a person skilled in this technical field, so explanations thereof will be omitted.

[0072] 1. Preparation of antibacterial glass composition Examples and Comparative Examples The antibacterial glass composition having the composition shown in Table 1 was melted in an electric furnace at a temperature of 1,250°C, and then quenched with twin rolls to obtain cullets having a thickness of 1 mm or less.

[0073] Here, the raw materials used for Na2O, K2O, and CaO were Na2CO3, K2CO3, and CaCO3, respectively, and the other ingredients were the same as those listed in Table 1. Vitrification was classified based on whether it exhibited homogeneous glass properties or the phenomenon of milkiness / unmelted material occurring.

[0074] The produced glass was pulverized in a dry grinding machine (ball mill or jet mill) to produce powder with an average particle size of 3 to 6 μm.

[0075] Next, a silane coupling agent having a cationic functional group was prepared.

[0076] The silane coupling agent used for the synthesis with cationic functional groups was 3-chloropropyltrimethoxysilane. To synthesize imidazolium with the silane coupling agent, the synthesis was carried out at 130°C for 24 hours in a toluene atmosphere at a molar ratio of 1:1.2 to produce the following substance (chemical reaction formula below). [ka]

[0077] Next, in order to synthesize the quaternary ammonium salt and the silane coupling agent, 3-chloropropyltrimethoxysilane and dimethylbutylamine were synthesized in a molar ratio of 1:0.909 at 90°C for 24 hours to produce the following substance (chemical reaction formula below). [ka]

[0078] Then, the antibacterial glass powder produced as above was used to synthesize a silane coupling agent having a cationic functional group.

[0079] The antibacterial glass powder and the silane coupling agent having a cationic functional group were mixed for a long period of time while being ground, and then heat-treated at 120°C for 24 hours to physicochemically bond the antibacterial glass powder and the silane coupling agent having a cationic functional group.

[0080] The presence or absence of vitrification and the content of the silane coupling agent in the examples and comparative examples are shown in Table 2. In examples 1 and 2, a silane coupling agent using imidazolium was used, and in examples 3 and 4 and comparative example 2, a silane coupling agent using a quaternary ammonium salt was used.

[0081] [Table 1]

[0082] [Table 2]

[0083] 2. Manufacturing of injection specimens Examples and Comparative Examples The antibacterial glass composition prepared as above was mixed with polypropylene pellets to prepare extrusion specimens. The size of the specimens was cut to 200 mm x 100 mm x 3 mm (thickness). Table 3 shows the content of antibacterial glass powder in the above specimens.

[0084] [Table 3]

[0085] 3. Evaluation of antibacterial performance and durability of the injection specimens (1) Evaluation of antibacterial activity In order to evaluate the performance of the antibacterial agent itself, the antibacterial test method (ASTM-E2149) was modified, and the number of bacteria was measured after 20 minutes, 1 hour, and 3 hours using 1 / 10 (0.2 g) of the sample amount used in previous experiments to perform an accurate performance evaluation.

[0086] In the test piece to which only the antibacterial glass powder was applied (Reference Example), the viable bacteria count reached 0 in 3 hours during the antibacterial performance evaluation. In contrast, in the test pieces to which the silane coupling agent having a cationic functional group and the antibacterial glass powder were applied (Examples 1 to 4), the viable bacteria count reached 0 in 1 hour.

[0087] Next, Table 4 shows the results of measuring the antibacterial performance of the injection specimens manufactured according to the Examples and Comparative Examples. In order to confirm the antibacterial power of each injection specimen, the antibacterial activity values ​​against Staphylococcus aureus and Escherichia coli were measured using the film adhesion method of JIS Z 2801, which is an antibacterial standard test method.

[0088] [Table 4]

[0089] As shown in Table 4, it can be confirmed that the injection specimens prepared according to the Examples have superior antibacterial activity compared to the specimens according to the Comparative Examples.

[0090] Based on the above experimental results, it was found that the antibacterial activity of the antibacterial glass powder having a cationic functional group is superior to that of the antibacterial glass powder itself, and it was also confirmed that the injection specimens prepared according to the Examples exhibited superior antibacterial activity compared to the injection specimens prepared according to the Comparative Examples.

[0091] (2) Evaluation of photodiscoloration As a light discoloration resistance test, the above specimen was irradiated with UV A / B for 96 hours, and the degree of discoloration of the specimen was measured using a color difference meter (Minolta CR-400).

[0092] The color difference (ΔE) before and after UV irradiation of the basic injection product (reference example) that does not contain antibacterial glass was 1 or more, but the color difference (ΔE) of all of the examples was 1 or less.

[0093] Although the present invention has been described above with reference to the illustrative drawings, the present invention is not limited to the embodiments and drawings disclosed in this specification, and it is clear that various modifications can be made by those skilled in the art within the scope of the technical concept of the present invention. Furthermore, even if the effects of the configuration of the present invention are not explicitly described in the above-mentioned embodiments of the present invention, it is natural that the effects that can be predicted by the configuration should also be recognized.

[0094] [Claims at the time of international application] [Claim 1] 1. An antimicrobial glass composition comprising: Based on 100% by weight of antibacterial glass powder, 26-50 wt% SiO2; 0.5 to 4% by weight of one or more of B2O3 and P2O5; Na2O and K2O, 15 to 27% by weight in total; 3 to 20% by weight of one or more of CaO, MgO, and WO3; An antibacterial glass powder containing 22 to 44% by weight of one or more of ZnO and SnO; and An antibacterial glass composition comprising: a silane coupling agent having a cationic functional group. [Claim 2] 2. The antimicrobial glass composition according to claim 1, wherein the Na2O content and the K2O content satisfy the following relationship: 0.5≦(Na2O content) / (K2O content)≦1.5 [Equation] [Claim 3] 2. The antimicrobial glass composition according to claim 1, wherein the antimicrobial glass powder contains 0.1 wt. % or less of Ag or an oxide containing Ag. [Claim 4] 2. The antibacterial glass composition according to claim 1, wherein the antibacterial glass powder contains 30% by weight or more of the ZnO. [Claim 5] the cationic functional group is at least one selected from the group consisting of a quaternary ammonium salt, an imidazolium group, a piperidinium group, a morpholinium group, a pyridinium group, and a pyrrolidinium group; 2. The antibacterial glass composition according to claim 1, wherein the silane coupling agent comprises one or more of γ-aminopropyltrimethoxysilane, γ-aminopropyltriethoxysilane, γ-glycidoxypropyltrimethoxysilane, γ-glycidoxypropyltrimethoxysilane, γ-mercaptopropyltrimethoxysilane, γ-mercaptopropyltriethoxysilane, and a silane coupling agent represented by the following chemical formula: RO(CH2CHO) n CH2CH2CH2CSi(OR')3 [Chemical formula] [In the above formula, R is a methyl group, an ethyl group or a hydrogen atom; R' is a methyl or ethyl group; n is a constant from 1 to 10. [Claim 6] 2. The antibacterial glass composition according to claim 1, comprising 0.1 to 20 parts by weight of the silane coupling agent having a cationic functional group based on 100 parts by weight of the antibacterial glass powder. [Claim 7] A method for producing an antimicrobial glass composition comprising the steps of: Based on 100% by weight of antibacterial glass powder, 26-50 wt% SiO2; 0.5 to 4% by weight of one or more of B2O3 and P2O5; Na2O and K2O, 15 to 27% by weight in total; 3 to 20% by weight of one or more of CaO, MgO, and WO3; and preparing an antibacterial glass powder containing 22 to 44 wt % of one or more of ZnO and SnO; melting the antibacterial glass powder; cooling the molten antimicrobial glass powder; adding a silane coupling agent having a cationic functional group to the cooled antibacterial glass powder, and pulverizing the mixture. [Claim 8] 8. The method for producing an antibacterial glass composition according to claim 7, wherein the Na2O content and the K2O content in the antibacterial glass powder satisfy the following [relationship]: 0.5≦(Na2O content) / (K2O content)≦1.5 [Relationship formula] [Claim 9] 8. The method for producing an antibacterial glass composition according to claim 7, wherein the antibacterial glass powder contains 0.1 wt% or less of Ag or an oxide containing Ag. [Claim 10] 8. The method for producing an antibacterial glass composition according to claim 7, wherein the antibacterial glass powder contains 30% by weight or more of ZnO. [Claim 11] the cationic functional group is at least one selected from the group consisting of a quaternary ammonium salt, an imidazolium group, a piperidinium group, a morpholinium group, a pyridinium group, and a pyrrolidinium group; The method for producing a resin composition for an antibacterial filter according to claim 7, wherein the silane coupling agent comprises at least one of γ-aminopropyltrimethoxysilane, γ-aminopropyltriethoxysilane, γ-glycidoxypropyltrimethoxysilane, γ-glycidoxypropyltrimethoxysilane, γ-mercaptopropyltrimethoxysilane, γ-mercaptopropyltriethoxysilane, and a silane coupling agent represented by the following chemical formula: RO(CH2CHO) n CH2CH2CH2CSi(OR')3 [Chemical formula] [In the above formula, R is a methyl group, an ethyl group or a hydrogen atom; R' is a methyl or ethyl group; n is a constant from 1 to 10. [Claim 12] 8. The method for producing an antibacterial glass composition according to claim 7, wherein the silane coupling agent having a cationic functional group is added in an amount of 0.1 to 20 parts by weight based on 100 parts by weight of the antibacterial glass powder.

Claims

1. 1. An antimicrobial glass composition comprising: Based on 100% by weight of antibacterial glass powder, SiO ２ 26 to 50% by weight; B ２ O ３ and P ２ O ５ 0.5 to 4% by weight of one or more of the following: Na ２ O and K ２ 15 to 27 wt. % combined O; CaO, MgO and WO ３ 3 to 20% by weight of one or more of the following: An antibacterial glass powder containing 22 to 44% by weight of one or more of ZnO and SnO; and An antibacterial glass composition comprising: a silane coupling agent having a cationic functional group.

2. The Na ２ The content of O and the K ２ The antimicrobial glass composition according to claim 1 , wherein the O content satisfies the following relationship: 0.5≦(Na ２ O content) / (K ２ O content)≦1.5 [Relationship formula]

3. 2. The antimicrobial glass composition of claim 1, wherein the antimicrobial glass powder contains 0.1 wt. % or less of Ag or an oxide containing Ag.

4. The antimicrobial glass composition of claim 1 , wherein the antimicrobial glass powder contains 30% by weight or more of the ZnO.

5. the cationic functional group is at least one selected from the group consisting of a quaternary ammonium salt, an imidazolium group, a piperidinium group, a morpholinium group, a pyridinium group, and a pyrrolidinium group; The antibacterial glass composition according to claim 1, wherein the silane coupling agent comprises at least one of γ-aminopropyltrimethoxysilane, γ-aminopropyltriethoxysilane, γ-glycidoxypropyltrimethoxysilane, γ-glycidoxypropyltrimethoxysilane, γ-mercaptopropyltrimethoxysilane, γ-mercaptopropyltriethoxysilane, and a silane coupling agent represented by the following chemical formula: P. ２ CHO) ｎ CH ２ CH ２ CH ２ CSi(OR') ３ [Chemical formula] [In the above formula, R is a methyl group, an ethyl group or hydrogen; R' is a methyl group or an ethyl group; n is a constant from 1 to 10.

6. 2. The antibacterial glass composition according to claim 1, comprising 0.1 to 20 parts by weight of the silane coupling agent having a cationic functional group, based on 100 parts by weight of the antibacterial glass powder.

7. A method for producing an antimicrobial glass composition comprising the steps of: Based on 100% by weight of antibacterial glass powder, SiO ２ 26 to 50% by weight; B ２ O ３ and P ２ O ５ 0.5 to 4% by weight of one or more of the following: Na ２ O and K ２ 15 to 27 wt. % combined O; CaO, MgO and WO ３ 3 to 20% by weight of one or more of the following: preparing an antimicrobial glass powder comprising 22-44 wt. % of one or more of ZnO and SnO; melting the antimicrobial glass powder; cooling the molten antimicrobial glass powder; adding a silane coupling agent having a cationic functional group to the cooled antibacterial glass powder, and pulverizing the mixture.

8. The Na contained in the antibacterial glass powder ２ The content of O and the K ２ The method for producing an antibacterial glass composition according to claim 7, wherein the O content satisfies the following formula: 0.5≦(Na ２ O content) / (K ２ O content)≦1.5 [Relationship formula]

9. The method for producing an antibacterial glass composition according to claim 7 , wherein the antibacterial glass powder contains 0.1 wt % or less of Ag or an oxide containing Ag.

10. The method for producing an antibacterial glass composition according to claim 7 , wherein the antibacterial glass powder contains 30 wt % or more of ZnO.

11. the cationic functional group is at least one selected from the group consisting of a quaternary ammonium salt, an imidazolium group, a piperidinium group, a morpholinium group, a pyridinium group, and a pyrrolidinium group; The silane coupling agent is at least one of γ-aminopropyltrimethoxysilane, γ-aminopropyltriethoxysilane, γ-glycidoxypropyltrimethoxysilane, γ-glycidoxypropyltrimethoxysilane, γ-mercaptopropyltrimethoxysilane, γ-mercaptopropyltriethoxysilane, and a silane coupling agent represented by the following chemical formula: The method for producing a resin composition for antibacterial filters according to claim 7. P. ２ CHO) ｎ CH ２ CH ２ CH ２ CSi(OR') ３ [Chemical formula] [In the above formula, R is a methyl group, an ethyl group or hydrogen; R' is a methyl group or an ethyl group; n is a constant from 1 to 10.

12. The method for producing an antibacterial glass composition according to claim 7, wherein the silane coupling agent having a cationic functional group is added in an amount of 0.1 to 20 parts by weight based on 100 parts by weight of the antibacterial glass powder.

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