COMPOSITE GLASS COMPOSITION FOR WASHING AND CLEANING AND METHOD FOR PRODUCING COMPOSITE GLASS POWDER USING THE SAME

Abstract

Disclosed are a composite glass composition for washing and cleaning and a method for producing composite glass powder using the same, in which a silicate-based glass composition containing an alkali oxide for activating water into alkaline water and a bleaching agent having bleaching performance are mixed or coated. Accordingly, since the silicate-based glass composition containing an alkali oxide can ionize water in place of a surfactant contained in existing synthetic detergents, washing and cleaning capacity equivalent to or greater than existing synthetic detergents can be secured with alkaline water ionized from water.

Claims

1. A composite glass composition comprising: a glass composition; and a bleaching agent mixed with the glass composition, wherein the glass composition comprises: 40 to 75 wt % of SiO.sub.2; and 30 to 60 wt % of Na.sub.2O, K.sub.2O, and Li.sub.2O.

2. The composite glass composition of claim 1, wherein the glass composition comprises 50 to 60 wt % of SiO.sub.2.

3. The composite glass composition of claim 1, wherein the glass composition comprises 30 wt % or less, respectively of Na.sub.2O, K.sub.2O, and Li.sub.2O.

4. The composite glass composition of claim 1, wherein the composite glass composition comprises: 20 to 70 wt % of the glass composition and 30 to 80 wt % of the bleaching agent.

5. The composite glass composition of claim 1, wherein the bleaching agent comprises one or more of borax, potassium permanganate, or sodium perborate.

6. A method for producing composite glass powder comprising: forming a glass composition by mixing and agitating 40 to 70 wt % of SiO.sub.2, and 30 to 60 wt % of the sum of Na.sub.2O, K.sub.2O, and Li.sub.2O; forming a composite glass composition by adding and mixing a bleaching agent to the glass composition; melting the composite glass composition; cooling the melted composite glass composition; and grinding the cooled composite glass composition.

7. The method for producing the composite glass powder of claim 6, wherein forming the composite glass composition includes mixing 20 to 70 wt % of the glass composition with 30 to 80 wt % of the bleaching agent.

8. The method for producing the composite glass powder of claim 6, wherein the bleaching agent comprises one or more of borax, potassium permanganate, or sodium perborate.

9. The method for producing the composite glass powder of claim 6, wherein the grinded composite glass powder has an average diameter of 30 μm or less.

10. A method for producing composite glass powder comprising: forming a glass composition by mixing and agitating 40 to 70 wt % of SiO.sub.2, and 30 to 60 wt % of the sum of Na.sub.2O, K.sub.2O, and Li.sub.2O; melting the composite glass composition; cooling the melted glass composition; and forming a glass powder by grinding the cooled glass; and coating a bleaching agent on the surface of the glass powder and drying the glass powder having the surface coated with the bleaching agent to form the composite glass powder.

11. The method for producing the composite glass powder of claim 10, wherein the bleaching agent is coated to cover an entirety of the surface of the glass powder.

12. The method for producing the composite glass powder of claim 10, wherein the composite glass powder includes 20 to 70 wt % of the glass powder and 30 to 80 wt % of the bleaching agent.

13. The method for producing the composite glass powder of claim 10, wherein the bleaching agent comprises one or more of borax, potassium permanganate, or sodium perborate.

14. The method for producing the composite glass powder of claim 10, wherein the glass powder has an average diameter of 30 μm or less.

Description

BRIEF DESCRIPTION OF DRAWINGS

[0026] FIG. 1 is a flow chart showing a method for producing composite glass powder for washing and cleaning according to an embodiment of the present disclosure; and

[0027] FIG. 2 is a flow chart showing a method for producing composite glass powder for washing and cleaning according to another embodiment of the present disclosure.

DETAILED DESCRIPTION OF EXEMPLARY EMBODIMENT

[0028] The above-described aspects, features and advantages are specifically described hereunder with reference to the accompanying drawings such that one having ordinary skill in the art to which the present disclosure pertains can easily implement the technical spirit of the disclosure. In the disclosure, detailed descriptions of known technologies in relation to the disclosure are omitted if they are deemed to make the gist of the disclosure unnecessarily vague. Below, preferred embodiments according to the disclosure are specifically described with reference to the accompanying drawings. In the drawings, identical reference numerals can denote identical or similar components.

[0029] The singular forms “a”, “an” and “the” are intended to include the plural forms as well, unless explicitly indicated otherwise. It should be further understood that the terms “comprise” or “include” and the like, set forth herein, are not interpreted as necessarily including all the stated components or steps but can be interpreted as excluding some of the stated components or steps or can be interpreted as including additional components or steps.

[0030] Hereinafter, a composite glass for washing and cleaning and a method for producing composite glass powder according to several embodiments of the present disclosure will be described.

[0031] A composite glass composition for washing and cleaning (hereinafter, for washing) according to an embodiment of the present disclosure may be mixed or coated with a silicate-base glass composition containing an alkali oxide for activating water to alkaline water and a bleaching agent having a bleaching function

[0032] Accordingly, the silicate-base glass composition containing the alkali oxide may ionize water by replacing the role of the surfactant contained in the conventional synthetic detergent, thereby securing the washing capacity equivalent to or higher than that of the conventional synthetic detergents, with alkaline water ionized from water.

[0033] In addition, the composite glass composition for washing according to the embodiment may include the silicate-base glass composition containing the alkali oxide may replace the role of the surfactant, and the use of the surfactant causing eutrophication and not soluble in water may be fundamentally excluded, thereby preventing environmental pollution problems in advance.

[0034] In other words, conventional surfactants are not soluble in water, which becomes the main cause of water pollution.

[0035] On the other hand, in the composite glass composition for washing according to the embodiment of the present disclosure, water may meet a glass composition to create alkaline water. At this time, water molecules may be broken down into cluster water molecules under the influence of ionization, and the water molecules may penetrate into the contaminants (or dirt) so that OH-molecules may surround the contaminants (dirt) to weaken the bonding force between the textile and the contaminants.

[0036] Accordingly, the composite glass composition for washing according to the embodiment may contain an alkali oxide. When it is mixed with wastewater that is weakly acidic, the composite glass composition may function to neutralize pH and there may be no risk of environmental pollution.

[0037] The composite glass powder for washing produced by using the composite glass composition according to the present disclosure may be a composite detergent for washing used when added in a washing machine, a dryer, a dishwasher and the like together with water.

[0038] To this end, the composite glass for washing according to the embodiment of the present disclosure may include a glass composition, a bleaching agent mixed with the glass composition.

[0039] In this instance, to activate washing force, the glass composition may contain an alkali oxide configured to activate water into alkaline water when used with water.

[0040] The glass composition may include 40 to 60 wt % of SiO.sub.2, and 30 to 60 wt % of the sum of Na.sub.2O, K.sub.2O and Li.sub.2O.

[0041] SiO.sub.2 is a glass former configured to facilitate vitrification, and a key component that serves as a structural framework of glass. In addition, although not acting as a direct component for expressing antimicrobial activity, SiO.sub.2 forms less OH groups on a glass surface, compared to P.sub.2O.sub.5 which is a representative glass former so that it is advantageous in facilitating metal ions to positively charge the glass surface.

[0042] SiO.sub.2 may be preferably contained in a content ratio of 40 to 70% wt of the total weight of the antimicrobial glass composition according to the present disclosure. 50 to 60 wt % may be more preferred. When SiO.sub.2 is added in a large amount in excess of 70 wt %, there could be a problem in that workability and production yield are deteriorated in a cooling process as the viscosity increases in a glass melting process. Conversely, when SiO.sub.2 is added in an amount of less than 40 wt %, there could be a problem in that the glass structure is weakened and water resistance is lowered.

[0043] Alkali oxides such as Na.sub.2O, K.sub.2O and Li.sub.2O are oxides configured to act as a network modifier for non-cross linking in the glass composition. Those components cannot be vitrified alone but vitrification may be possible when they are mixed with a network former such as SiO.sub.2 and B.sub.2O.sub.3 in a certain ratio. In the present disclosure, SiO.sub.2 may act as a support, and the content of SiO.sub.2 may increase to a predetermined level or more. When the content of the alkali oxide is lowered, durability may increase but washing performance for contaminants may decrease. When the content of the alkali oxide is increased to a predetermined level of more, durability may decrease but the washing performance may decrease.

[0044] If only one of those components is contained in the glass composition, the durability of the glass might be weakened in an area where vitrification is possible. However, when two or more of those components are contained in the glass composition, the glass durability may be increased again. This is called ‘Mixed alkali effect’

[0045] The sum of Na.sub.2O, K.sub.2O and Li.sub.2O may be added in a content ratio of 30 to 60 wt % of the total weight of the glass composition, and 40 to 50 wt % may be preferred. If the sum of Na.sub.2O, K.sub.2O and Li.sub.2O is added in a content ratio exceeding 60 wt % of the total weight of the glass composition, there might be a problem of deteriorated durability and deteriorated washing performance for specific contaminants. Conversely, if the sum of Na.sub.2O, K.sub.2O and Li.sub.2O is added in a content ratio less than 60 wt % of the total weight of the glass composition, there might be a problem of deteriorated washing performance.

[0046] However, when one of Na.sub.2O, K.sub.2O and Li.sub.2O is contained in a large amount exceeding 30 wt %, vitrification might be difficult and thermal properties might be deteriorated. Accordingly, each of the Na.sub.2O, K.sub.2O and Li.sub.2O may be added in an amount of 30 wt % or less of the total weight.

[0047] Meanwhile, the glass composition for washing according to the embodiment of the present disclosure may include 20 to 70 wt % of the glass composition and 30 to 90 wt % of the bleaching agent.

[0048] The bleaching agent may include one or more selected from oxygen-based oxidative bleaching agents including borax, potassium permanganate, and sodium perborate.

[0049] When the bleaching agent is added in an amount of 30 wt % or less of the total weight of the composite glass composition, it might be difficult to achieve power bleaching performance. Conversely, when the bleaching agent is added in an amount exceeding 80 wt % of the total weight amount of the glass composition, the content amount of the glass composition could be decreased to deteriorate durability and washing performance for specific contaminants could be deteriorated.

[0050] When using the conventional alkali ionized water alone, washing performance for oil contaminants may be achieved to some extent but washing performance for red wine containing anthocyanin as the main component may be significantly deteriorated.

[0051] To prevent the washing performance for various contaminants from deteriorating in advance, the bleaching agent having the bleaching effect may be mixed or coated with the silicate-based glass composition containing the alkali oxide to improve the washing performance for various contaminants or dirt in the present disclosure.

[0052] Generally, the color of contaminants may be expressed as conjugated bond absorbs light in the visible region. The bleaching agent may cut or oxidize the conjugated bond and shorten the chin not to absorb light in the visible region, thereby controlling the color expression.

[0053] As a result, the present disclosure may improve the washing performance for various contaminants such as oils, red wine by mixing or coating the glass composition with an oxygen-based oxidizing bleach configured to break or oxidize the conjugated bon causing color development or expression and shorten the chain.

[0054] Hereinafter, referring to the accompanying drawings, a method for producing composite glass powder for washing according to embodiments of the present disclosure will be described.

[0055] FIG. 1 is a flow chart showing a method for producing composite glass powder for washing according to an embodiment of the present disclosure.

[0056] As shown in FIG. 1, the method for producing the composite glass powder for washing according to this embodiment may include mixing S110, melting S120, cooling S130 and grinding S140.

Mixing

[0057] In the mixing process S110, 40 to 70 wt % of SiO.sub.2, and 30 to 60 wt % of the sum of Na.sub.2O, K.sub.2O and Li.sub.2O may be mixed and agitated, thereby preparing a glass composition. After that, a bleaching agent may be added to the glass composition and a composite glass composition may be prepared.

[0058] 50 to 60 wt % of SiO.sub.2 may be preferred.

[0059] Also, 30% or less of Na.sub.2O, K.sub.2O and Li.sub.2O may be preferred, respectively.

[0060] In the mixing process, 20 to 70 wt % of the glass composition and 30 to 80 wt % of the bleaching agent may be mixed.

[0061] When the bleaching agent is added in an amount less than 30 wt % of the total weight of the composite glass composition, it could be difficult to perform bleaching. Conversely, when the bleaching agent is added in an amount exceeding 80 wt % of the total weight of the composite glass composition, durability could be deteriorated due to the decrease of the glass composition adding amount and washing performance for specific contaminants could be deteriorated.

[0062] Here, the bleaching agent may include one or more selected from oxygen-based oxide bleaching agents including borax, potassium permanganate and sodium perborate.

Melting

[0063] In a melting process S120, the composite glass composition may be melted.

[0064] In this process, melting may be performed at 1,200° C. to 1,300° C. for 1 to 60 minutes.

[0065] When the melting temperature is lower than 1,200° C. or the melting time is less than 1 minute, the composite glass composition might be completely melted, thereby causing a problem of immiscibility of the glass melt. Conversely, when the melting temperature is higher than 1,300° C. or the melting time is over 60 minutes, excessive energy and time should be required, which is not economical.

Cooling

[0066] In the cooling process S130, the melted composite glass composition may be cooled to room temperature.

[0067] In the cooling process, cooling may be performed in a method of cooling in furnace. When air cooling or water cooling is applied, the internal stress of the antimicrobial glass might be severely formed and it might cause cracks in some cases. Accordingly, the cooling in furnace is preferred as the cooling method.

[0068] Grinding

[0069] In the grinding step S140, the cooled antimicrobial glass may be grinded. At this time, a dry grinder may be used for grinding.

[0070] The antimicrobial glass may be finely pulverized to prepare composite glass powder. The composite glass power may preferably have an average diameter of 30 μm or less. 15 to 25 may be more preferred.

[0071] The composite glass powder for washing may be produced according to the above-described processes S110 to S140.

[0072] The composite glass powder for washing according to the embodiment of the present disclosure produced through the above-described processes may be produced through a melting process of co-firing after mixing a silicate-based glass composition containing the alkali oxide for activating water with alkaline water and a bleaching agent having a bleaching performance.

[0073] Accordingly, the silicate-based glass composition containing the alkali oxide may ionize water by replacing the role of the surfactant contained in the conventional synthetic detergent, thereby securing the washing capacity that is equal to or more excellent than the conventional synthetic detergent due to the user of the alkali water ionized from water.

[0074] In addition, since the silicate-based glass composition containing the alkali oxide replaces the surfactant, the user of the surfactant that are not soluble in water and causes entrophication may be fundamentally excluded, thereby preventing environmental pollution problems in advance.

[0075] Meanwhile, FIG. 2 is a flow chart showing a method for producing composite glass powder for washing and cleaning according to another embodiment of the present disclosure.

[0076] As shown in FIG. 2, the method for producing the composite glass powder for washing according to this embodiment may include mixing S210, melting S220, cooling S230, grinding S240 and coating S250.

Mixing

[0077] In the mixing process S210, 40 to 70 wt % of SiO.sub.2, and 30 to 60 wt % of the sum of Na.sub.2O, K.sub.2O and Li.sub.2O may be mixed and agitated, thereby preparing a glass composition. After that, a bleaching agent may be added to the glass composition and a composite glass composition may be prepared.

[0078] 50 to 60 wt % of SiO.sub.2 may be preferred.

[0079] Also, 30 wt % or less of Na.sub.2O, K.sub.2O and Li.sub.2O may be preferred, respectively.

Melting

[0080] In a melting process S220, the composite glass composition may be melted.

[0081] In this process, melting may be performed at 1,200° C. to 1,300° C. for 1 to 60 minutes. When the melting temperature is lower than 1,200° C. or the melting time is less than 1 minute, the composite glass composition might be completely melted, thereby causing a problem of immiscibility of the glass melt. Conversely, when the melting temperature is higher than 1,300° C. or the melting time is over 60 minutes, excessive energy and time should be required, which is not economical.

Cooling

[0082] In the cooling process S230, the melted composite glass composition may be cooled to room temperature.

[0083] In the cooling process, cooling may be performed in a method of cooling in furnace. When air cooling or water cooling is applied, the internal stress of the antimicrobial glass might be severely formed and it might cause cracks in some cases. Accordingly, the cooling in furnace is preferred as the cooling method.

Grinding

[0084] In the grinding step S240, the cooled glass may be grinded and glass powder may be gained. At this time, a dry grinder may be used for grinding.

[0085] The glass powder may have an average diameter of 30 μm or less. 15 to 25 may be more preferred.

Coating

[0086] In the coating process, a bleaching agent may be coated on the surface of the glass powder and the glass powder having the bleaching agent coated on its surface may be dried.

[0087] In this process, the coating may be performed so as to have a component ratio of 20 to 70 wt % of the glass powder and 30 to 80 wt % of the bleaching agent. At this time, the coating method may be a spray coating method. However, it may one of examples and various coating method may be applied. In other words, any methods capable of coating the bleaching agent with a uniform thickness on the surface of the glass powder may be applied without limitation.

[0088] In this instance, the bleaching agent may be coated to cover the entire surface of the glass powder.

[0089] When the bleaching agent is coated in an amount of less than 30 wt % of the total weight of the composition glass powder, it could be difficult to property express the bleaching performance. Conversely, when the bleaching agent is coated in an amount exceeding 80 wt % of the total weight of the composite glass powder, the added amount of the glass composition could be reduced, thereby deteriorating the durability and and the washing performance for specific contaminants.

[0090] Here, the bleaching agent may include one or more selected from oxygen-based oxidative bleaching agents including borax, potassium permanganate, and sodium perborate.

[0091] The composite glass powder for washing may be produced according to the above-described processes S110 to S140.

[0092] The composite glass powder for washing according to the embodiment of the present disclosure produced through the above-described processes may coat the bleaching agent having the bleaching performance on the silicate-based glass powder containing the alkali oxide for activating water with alkaline water.

[0093] Accordingly, the silicate-based glass composition containing the alkali oxide may ionize water by replacing the role of the surfactant contained in the conventional synthetic detergent, thereby securing the washing capacity that is equal to or more excellent than the conventional synthetic detergent due to the user of the alkali water ionized from water.

[0094] In addition, since the silicate-based glass composition containing the alkali oxide replaces the surfactant, the user of the surfactant that are not soluble in water and causes entrophication may be fundamentally excluded, thereby preventing environmental pollution problems in advance.

[0095] In addition, since the silicate-based glass composition containing the alkali oxide replaces the surfactant, the user of the surfactant that are not soluble in water and causes entrophication may be fundamentally excluded, thereby preventing environmental pollution problems in advance.

EMBODIMENTS

[0096] Hereinafter, the configuration and operation of the present disclosure will be described in detail through exemplary embodiment of the present disclosure. The above-described aspects, features and advantages are specifically described hereunder with reference to the accompanying drawings such that one having ordinary skill in the art to which the present disclosure pertains can easily implement the technical spirit of the disclosure.

[0097] In the disclosure, detailed descriptions of known technologies in relation to the disclosure are omitted if they are deemed to make the gist of the disclosure unnecessarily vague. Below, preferred embodiments according to the disclosure are specifically described with reference to the accompanying drawings. In the drawings, identical reference numerals can denote identical or similar components.

1. Antimicrobial Glass Powder Preparation

Embodiment 1

[0098] An antimicrobial glass composition having the composition shown in Table 1 may be mixed and agitated, and the glass composition is formed after that. Borax is added to the glass composition in the composition ratio shown in Table 2, and the composite glass composition is prepared.

[0099] Next, the composite glass composition may be melted at a temperature of 1,200° C. in an electric furnace. After that, the melt glass composition may be cooled in on a stainless steel sheet in a glass bulk form by the air cooling method, thereby obtaining cullet-type composite glass. Then, the composite glass may be pulverized with a dry grinder (e.g., a ball mill) and passed through a 400-mesh sieve so that antimicrobial glass powder having a D90 particle size of 20 μm may be prepared.

[0100] In this instance, Na.sub.2CO.sub.3 and K.sub.2CO.sub.3 are used as raw materials for Na.sub.2O and K.sub.2O, and the other components are the same as those shown in Table 1.

Embodiment 2

[0101] The composite glass composition having a D90 particle size of 17 μm is prepared in the same method as the method in Embodiment 1, except that the antimicrobial glass composition having the composition shown in Table 1 and the composition ratio shown in Table 2 is melted at a temperature of 1,260° C. in an electric furnace.

Embodiment 3

[0102] The composite glass composition having a D90 particle size of 18 p m is prepared in the same method as the method in Embodiment 1, except that the antimicrobial glass composition having the composition ratio shown in Table 1 and the composition ratio shown in Table 2 is melted at a temperature of 1,240° C. in an electric furnace.

TABLE-US-00001 TABLE 1 (Unit: % by weight) Comparative Classification Embodiment 1 Embodiment 2 embodiment 1 SiO.sub.2 58.3 56.4 54.7 Na.sub.2O 21.5 19.3 20.4 K.sub.2O 11.2 10.5 12.6 Li.sub.2O  9.0 13.7 12.3

TABLE-US-00002 TABLE 2 Classification Composition Comparative embodiment 1 Indicator detergent Comparative embodiment 2 Alkali ionized water Comparative embodiment 3 Borax Embodiment 1 Glass composition:Borax (20 wt %:80 wt %) Embodiment 2 Glass composition:Borax (40 wt %:60 wt %) Embodiment 3 Glass composition:Borax (70 wt %:30 wt %)

2. Washing Power Evaluation

[0103] [Table 3] shows result of washing power evaluation for Embodiment 1 to 3 and Comparative embodiments 1 to 3.

[0104] Here, the washing power evaluation is performed as follows.

[0105] First, contaminated cloths (i.e., JIS contaminated cloth and Red Wine contaminated cloth) and the indicator detergent and samples for determining the washing power according to Comparative embodiments 1 to 3 and Embodiments 1 to 3 are respectively put into a agitation-type washing power tester. Then, water at 30 is added to the tester.

[0106] Next, light pressing is performed to that the moisture content is 200% or less. After that, washing is repeated twice for 3 minutes at a speed of 120rpm using the agitation-type washing power tester.

[0107] JIS contaminated cloth is the artificially contaminated cloth that is internationally recognized (KS M 2709 applied mutatis mutandis). Such the JIS contaminated cloth is wet artificial stained cloths which are complex stained cloth with oily substances, proteins, and inorganic components).

[0108] Once the washing is completed, the reflectance of the contaminated cloths is measured and the washing power is evaluated based on [Equation 1] below.

Washing power (%)=Whiteness after washing−Whiteness before washing)/(Whiteness of original cloth−Whiteness before washing)×100   Equation 1

TABLE-US-00003 TABLE 3 Comparative Comparative Comparative Classification embodiment 1 embodiment 2 embodiment 3 Washing Contaminated 42.6 50.2 40.1 power cloth (JIS (%) contaminate cloth) Contaminated 51.2 37.5 64.1 cloth (JIS contaminate cloth) Classification Embodiment 1 Embodiment 2 Embodiment 3 Washing Contaminated 45.1 54.9 56.4 power cloth (JIS (%) contaminate cloth) Contaminated 63.4 61.8 52.5 cloth (JIS contaminate cloth)

[0109] According to the result of the washing power evaluation as shown in Table 1 to 3, it means that an indicator detergent corresponding to Comparative embodiment 1 can be launched as a detergent produce, when having the washing power equal to or greater than the washing power.

[0110] It is confirmed that Embodiments 1 to 3 have the greater washing power than Comparative embodiment 1 using the indicator detergent.

[0111] In particular, it is confirmed that Embodiment 2 in which the glass composition and borax are mixed in an amount ratio of 40 wt % and 60 wt %, is measured to have the washing power of 54.9 for JIS contaminated cloth and 61.8% for the wine contaminated cloth, thereby being confirmed that it has the best washing power.

[0112] On the other hand, Comparative embodiment 2 using only the alkali ionized water is measured to have the washing power of 50.2% for JIS contaminated cloth and the washing power of 37.5% for the wine contaminated cloth, thereby being confirmed that it has quite a bad washing power for the wind contaminated cloth.

[0113] Comparative embodiment 3 using only borax is confirmed to have an excellent washing power for the wine contaminated cloth but only 40.1% of the washing power for the JIS contaminated cloth, thereby being confirmed that it has the bad washing power for the JIS contaminated cloth.

[0114] The embodiments are described above with reference to a number of illustrative embodiments thereof. However, the present disclosure is not intended to limit the embodiments and drawings set forth herein, and numerous other modifications and embodiments can be devised by one skilled in the art. Further, the effects and predictable effects based on the configurations in the disclosure are to be included within the range of the disclosure though not explicitly described in the description of the embodiments.

NUMERAL DESCRIPTION

[0115] S110: Mixing [0116] S120: Melting [0117] S130: Cooling [0118] S140: Grinding