KR102289858B1 - Antibacterial-antiviral ink and manufacturing method thereof - Google Patents

Abstract

The present invention relates to an antibacterial and antiviral ink and a method for manufacturing the same. The antibacterial and antiviral ink of them contains 50 to 90 wt% of an acrylic resin, 0.5 to 6 wt% of hydroxyapatite, 4 to 35 wt% of calcium carbonate, and 1.0 to 10. 0 wt of zinc oxide, and other additives.

Description

Antibacterial antiviral ink and manufacturing method thereof

The present invention relates to an antibacterial antiviral ink and a method for preparing the same.

In general, the composition of the ink is composed of pigments, resins, petroleum-based organic solvents, vegetable oils, and other additives.

Recently, eco-friendly products such as solvent-free ink, which replaces solvent with vegetable oil harmless to the human body, are being developed, but since ink is provided in a mixed composition of several chemicals, it is necessary to consider both physical properties and environment-friendly aspects to improve printing process efficiency. Performance improvement is required.

In particular, as people's standards of living improve and interest in hygiene and health increases, an antibacterial agent having a bactericidal property is added to the ink to prevent infection of pathogenic bacteria or viruses.

However, when an antibacterial agent is simply added to the ink, there is a limit to the durability of the antibacterial agent, and since the antibacterial agent itself is made of an organic chemical, it itself is harmful to the human body.

Republic of Korea Patent Registration No. 10-0528441 (2005.11.07.)

The problem to be solved by the present invention is to provide an antibacterial antiviral ink capable of preventing infection of bacteria or viruses, and preventing particle precipitation and agglomeration using raw materials harmless to the human body, and a method for manufacturing the same.

However, the problems to be solved by the present invention are not limited to those mentioned above, and other problems to be solved that are not mentioned can be clearly understood by those of ordinary skill in the art to which the present invention belongs from the following description. will be.

Antibacterial antiviral ink according to an embodiment of the present invention, acrylic resin 50 wt% to 90 wt%; 0.5 wt% to 6 wt% of hydroxyapatite; 4 wt% to 35 wt% of calcium carbonate; 1.0 wt% to 10.0 wt% of zinc oxide; and other additives.

In this case, the acrylic resin may be provided in the form of a solution.

In addition, the hydroxide apatite, the calcium carbonate, and the zinc oxide may be provided in the form of a powder having a diameter in the range of 1 nm to 500 nm.

In addition, the zinc oxide may be coated with 3 wt% to 7 wt% of ^{ferric iron (Fe 2+} ) on the surface to prevent precipitation of particles in the solution phase.

In the method for producing an antibacterial antiviral ink according to an embodiment of the present invention, an antibacterial antiviral ink produced using a raw material including an acrylic resin and an antibacterial antiviral material, which is performed by a grinder and a stirrer, a bead milling process in which an antibacterial and antiviral substance is dispersed in a solution phase; an addition process of adding a pulverized sol-state antibacterial antiviral material solution together with a dispersing agent and an organic antibacterial agent into an acrylic resin solution; and a stirring process of uniformly mixing the antibacterial and antiviral material solution, the dispersing agent, the organic antibacterial agent and the acrylic resin solution.

At this time, the acrylic resin satisfies the range of 50 wt% to 90 wt%, and the antibacterial and antiviral material is 0.5 wt% to 6 wt% of hydroxyapatite, 4 wt% to 35 wt% of calcium carbonate, and 1.0 wt% to 10.0 wt% of zinc oxide may be included.

In addition, the zinc oxide may be coated with 3 wt% to 7 wt% of ^{ferric iron (Fe 2+} ) on the surface to prevent precipitation of particles in the solution phase.

In addition, in the bead mill process, in a state in which the antibacterial and antiviral material is put into a wet bead mill device, the antibacterial and antiviral material is pulverized in the range of 1200 RPM to 1500 RPM for 1 to 2 hours, It can be pre-treated in the form of a powder having a diameter in the range of 500 nm.

In addition, in the stirring process, the antibacterial antiviral material solution, the dispersing agent, the organic antibacterial agent and the acrylic resin solution are added to the stirrer, and the stirring may be performed in the range of 1300 RPM to 1700 RPM for 1 to 2 hours.

According to the present invention, by providing an antibacterial antiviral ink with a material harmless to the human body (not including heavy metals such as Cu), it can be applied to the flooring of schools, kindergartens, and houses where children live, and infection of pathogenic bacteria or viruses effectively It has the effect of preventing it.

1 is a side view showing a mouse to which an antibacterial antiviral ink according to an embodiment of the present invention is applied.
2 is a flowchart illustrating a method of manufacturing an antibacterial antiviral ink according to an embodiment of the present invention.
3 is a photograph of the virus evaluation of the antibacterial antiviral ink according to an embodiment of the present invention.
4 is a photograph showing the progress of the virus state over time in the virus evaluation of the antibacterial antiviral ink according to an embodiment of the present invention.
5 is a graph showing the virus increase over time in the virus evaluation of the antibacterial antiviral ink according to an embodiment of the present invention.

Hereinafter, with reference to the accompanying drawings, the configuration and operation according to the embodiment of the present invention will be described in detail. The following description is one of several aspects of the present invention that is claimable, and the following description may form part of the detailed description of the present invention.

However, in describing the present invention, detailed descriptions of known configurations or functions may be omitted for clarity of the present invention.

The present invention is capable of making various changes and may include various embodiments, and specific embodiments are illustrated in the drawings and described in the detailed description. However, this is not intended to limit the present invention to specific embodiments, and it should be understood to include all modifications, equivalents and substitutes included in the spirit and scope of the present invention.

Terms including an ordinal number such as 1st, 2nd, etc. may be used to describe various components, but the components are not limited by these terms. These terms are used only for the purpose of distinguishing one component from another.

When it is said that a component is 'connected' or 'connected' to another component, it is understood that it may be directly connected or connected to the other component, but other components may exist in between. it should be

The terms used in the present invention are only used to describe specific embodiments, and are not intended to limit the present invention. The singular expression includes the plural expression unless the context clearly dictates otherwise.

A preferred embodiment of the present invention will be described in more detail with reference to the accompanying drawings.

1 is a side view showing a mouse to which an antibacterial antiviral ink according to an embodiment of the present invention is applied.

Referring to FIG. 1 , the antibacterial antiviral ink 10 according to an embodiment of the present invention may be applied and printed on the surface of a plastic injection product 1 such as a mouse. The antibacterial and antiviral ink 10 may include an acrylic resin, an antibacterial and antiviral material, an organic antibacterial agent, and other additives.

Specifically, the acrylic resin may be provided in the form of a solution. The acrylic resin solution is a product of the trade name NeoCryl A-1127, and it can be understood as a binder containing about 44% of the solid acrylic resin. In this embodiment, an acrylic resin solution having a viscosity of about 75 mPa.s, a pH of 7.5, and a Tg (glass transition temperature) of -18°C may be used. Products with 100% solid content are acrylic resins, and products dispersed in ultrapure water (DIW: De-Ionized Water) can be referred to as acrylic resin solutions. In addition, the solid acrylic resin is water-soluble, so it can be completely dissolved in ultrapure water and dispersed in water. In other words, the acrylic resin may be provided in the form of an aqueous solution. In addition, since the acrylic resin is provided in the form of an aqueous solution, an antibacterial antiviral material, an organic antibacterial agent and other additives may be provided in a dispersed form.

Acrylic resin may be composed of 50 wt% to 90 wt% of the total antibacterial and antiviral ink. If the amount of acrylic resin is less than 50 wt%, there is a problem in that the adhesion to the substrate to be used (eg, flooring, furniture, plastic surface, etc.) If the resin is more than 90 wt%, the amount of the additive exhibiting a relatively antiviral effect is sharply reduced, and the antiviral effect is sharply lowered, so that the purpose of the original product may be lost.

The antibacterial antiviral material may comprise one or more of 0.5 wt% to 6 wt% of hydroxide apatite, 4 wt% to 35 wt% of calcium carbonate, and 1.0 wt% to 10.0 wt% of zinc oxide.

Hydroxyapatite (hydroxyapatite) is a _{basic calcium phosphate with a molecular formula Ca 10} (PO ₄ ) ₆ (OH) ₂ , and is found in rocks, skeletons, and teeth. This hydroxyapatite is known to have antiviral properties and can be well dispersed in solution. In this embodiment, hydroxyapatite having a diameter of 50 nm can be used.

In the case of hydroxyapatite, the antiviral effect started to appear in the composition containing at least 0.5 wt% to show the antiviral effect. The properties are deteriorated, and there may be a problem that the product is suspended in appearance.

Calcium carbonate is an ionic compound composed of calcium ions (Ca ²⁺ ) and carbonate ions (CO ₃ ^2- ), and magnesium carbonate is a white crystal made by adding sodium carbonate to a dissolved solution. These calcium carbonate and magnesium carbonate are known to have an antiviral effect.

If the content of calcium carbonate is less than 4 wt%, antibacterial and antiviral performance cannot be exhibited, and when the calcium carbonate content exceeds 35 wt%, aggregation between particles may occur and the antiviral effect may be rather reduced. In addition to calcium carbonate, as an antiviral additive, magnesium carbonate or mori powder can be used. Moryeo (牡蠣) powder is a powder made by burning oyster shells. Since the particle size of this mulberry powder is relatively larger than that of other raw materials, it is preferable to select the size similar to that of other raw materials by using a sieve before inputting the bead mill process.

Zinc oxide is a hexagonal white powder, almost insoluble in water, but soluble in dilute acids and strong alkalis. In particular, in the present embodiment, zinc oxide may be coated with 3 wt% to 7 wt% of ^{ferric iron (Fe 2+} ) on the ZnO surface in order to prevent precipitation of particles in the solution phase. By coating the ZnO surface with ferrous iron (Fe ²⁺ ), dispersion stability and antiviral effect can be increased.

For zinc oxide, both spherical type and flake type can be used. If the content of zinc oxide is less than 1 wt%, antibacterial and antiviral effects are not exhibited. can be

In the case of the antibacterial and antiviral material, in order to prevent precipitation, particle aggregation, etc. in the solution phase, it is necessary to precede the pretreatment process called wet bead-mill in a state in which the particles are dispersed in the solution phase.

The organic antibacterial agent (Sodium Pyrithone) is in a liquid state, and may provide a function of inhibiting the generation of microorganisms such as bacteria or mold living in the living environment or killing them. The antibacterial effect of organic antibacterial agents is not temporary and can last from several weeks to years. The organic antibacterial agent may be composed of 0.8 wt% to 1.6 wt% in the antibacterial antiviral ink.

When the content of the organic antibacterial agent is 0.8 wt% or less, the antibacterial and antiviral effect is not exhibited. If it exceeds, solubility problems of the organic antibacterial agent may occur, resulting in precipitation and phase separation on the product.

Other additives may include a dispersing agent to prevent agglomeration of the fine particles. The dispersing agent (Conditioning Agent) can prevent the aggregation of the micro-particles generated when large particles and agglomerated particles are pulverized to make smaller particles and colloidal particles. can do.

For example, when the antibacterial and antiviral material is pulverized through a feed mill process, aggregation of micro particles may be prevented by adding a dispersing agent to the pulverized antibacterial antiviral material. In this embodiment, BYK-331 dispersant (polyether-modified polydimethylsiloxane) may be used. Of course, in order to improve various functions in the ink, various kinds of additives other than the dispersant may be added to the present invention.

The antibacterial and antiviral ink 10 according to this embodiment may be applied to the surface of the plastic injection molding 1, but is not limited thereto, and in addition to the plastic injection molding, it may be applied to the surface of the flooring material, windows, door frames, furniture, etc. of course there is

2 is a flowchart illustrating a method of manufacturing an antibacterial antiviral ink according to an embodiment of the present invention.

Referring to FIG. 2 , in the method of manufacturing the antibacterial antiviral ink 10 according to an embodiment of the present invention, the ink may be manufactured using raw materials including acrylic resin, an antibacterial and antiviral material, and an organic antibacterial agent. The manufacturing method of such antibacterial and antiviral ink may include a bead milling process (S100), an addition process (S200), and a stirring process (S300).

The bead milling process (S100) is a process of pulverizing the antibacterial and antiviral substances in a dispersed state in the solution phase. In the bead mill process (S100), in a state in which the antibacterial and antiviral material is put into a grinding device (eg, a wet bead mill device) together with distilled water, the antibacterial and antiviral material is applied to the wet bead mill device at 1200 RPM ~ It can be milled for 1-2 hours while operating in the 1500 RPM range. In this embodiment, the bead mill process (S100) was performed at RPM 1400 for 2 hours.

In this case, the beads used in the wet bead mill apparatus may be zirconia balls (diameter size: 0.3 mm). Through this bead mill process (S100), the antibacterial and antiviral material may be pre-treated in the form of a powder having a diameter in the range of 1 nm to 500 nm.

In the bead mill process (S100) according to this embodiment, the antibacterial and antiviral material particles may be dispersed in water. In this case, the solid content may be 26.6 wt% of apatite hydroxide, 33 wt% of calcium carbonate, and 20.4 wt% of zinc oxide.

The antibacterial and antiviral material pulverized in the bead milling process (S100) is composed of 0.5 wt% to 6 wt% of hydroxyapatite, 4 wt% to 35 wt% of calcium carbonate, and 1.0 wt% to 10.0 wt% of zinc oxide. can In particular, zinc oxide contained in the antibacterial and antiviral material may be coated with 3 wt% to 7 wt% of ^{ferric iron (Fe 2+ ) on the surface to prevent precipitation of particles in a solution phase.}

The addition process (S200) is a process of injecting a sol-state antibacterial antiviral material solution together with a dispersing agent and an organic antibacterial agent into the acrylic resin solution. The acrylic resin solution added in this addition process (S200) may satisfy the range of 50 wt% to 90 wt%, and the organic antibacterial agent may satisfy the range of 0.8 wt% to 1.6 wt%. The dispersing agent used in this addition process (S200) can prevent aggregation of the microparticles generated due to pulverization, and allow the antibacterial and antiviral material to be uniformly mixed in the acrylic resin solution.

The stirring process (S300) is a process of uniformly mixing the antibacterial and antiviral material solution, the dispersing agent, the organic antibacterial agent, and the acrylic resin solution using a stirrer (eg, dissolve (infella stirring)).

For example, in this stirring process (S300), in the state in which the antibacterial antiviral material solution, the dispersant, the organic antibacterial agent and the acrylic resin solution are put into the stirrer, the driving speed of the stirrer is in the range of 1300 RPM to 1700 RPM depending on the concentration and viscosity of the solution. It can be stirred for 1-2 hours during operation.

3 is a photograph of the virus evaluation of the antibacterial antiviral ink according to an embodiment of the present invention, and FIG. 4 is the virus status over time in the virus evaluation of the antibacterial antiviral ink according to an embodiment of the present invention. is a photograph in progress, and FIG. 5 is a graph showing the virus increase over time in the virus evaluation of the antibacterial antiviral ink according to an embodiment of the present invention.

Referring to Figure 3, the virus evaluation according to the present embodiment. Human Coronavirus 229E-GFP test method was conducted.

For example, a 3×3 cm sample was prepared, a virus culture solution was dropped on the film, and after a certain period of time had elapsed, the virus solution on the film surface was recovered and the number of live viruses therein was counted. Virus counting is a principle in which fluorescence is expressed in the process of virus infecting animal cells by attaching a fluorescent substance to the virus.

Referring to FIGS. 4 to 5 , as a result of the evaluation, the fluorescent substance expressed while the virus infects animal cells rapidly decreased after 1 hour, and completely died after 8 hours.

As described above, the detailed description of the present invention has been made by the embodiments with reference to the accompanying drawings, but since the above-described embodiments have only been described with preferred examples of the present invention, the present invention is limited only to the above embodiments. It should not be understood, and the scope of the present invention should be understood as the following claims and their equivalents.

1: plastic injection molding 10: ink

Claims (9)

50 wt% to 90 wt% of acrylic resin;
0.5 wt% to 6 wt% of hydroxyapatite;
4 wt% to 35 wt% of calcium carbonate;
1.0 wt% to 10.0 wt% of zinc oxide; and
other additives,
The zinc oxide is
3wt% to 7wt% of ferric ^{iron (Fe 2+} ) is coated on the surface to prevent the precipitation of particles in the solution phase,
Antibacterial antiviral ink. According to claim 1,
The acrylic resin is provided in the form of a solution,
Antibacterial antiviral ink. According to claim 1,
The hydroxide apatite, the calcium carbonate and the zinc oxide are provided in the form of a powder having a diameter in the range of 1 nm to 500 nm,
Antibacterial antiviral ink. delete In the method for producing an antibacterial antiviral ink prepared by using a raw material comprising an acrylic resin and an antibacterial antiviral material, which is performed by a grinder and a stirrer,
a bead milling process in which the antibacterial and antiviral substances are dispersed in a solution phase;
an addition process of adding a pulverized sol-state antibacterial antiviral material solution together with a dispersing agent and an organic antibacterial agent to an acrylic resin solution in which the acrylic resin is provided in the form of an aqueous solution; and
A stirring process of uniformly mixing the antibacterial antiviral material solution, the dispersing agent, the organic antibacterial agent and the acrylic resin solution,
The antibacterial and antiviral substance is
0.5 wt% to 6 wt% of hydroxide apatite, 4 wt% to 35 wt% calcium carbonate and 1.0 wt% to 10.0 wt% zinc oxide;
The zinc oxide is
3wt% to 7wt% of ferric ^{iron (Fe 2+} ) is coated on the surface to prevent the precipitation of particles in the solution phase,
Method for producing antibacterial antiviral ink. delete delete 6. The method of claim 5,
The bead mill process is
In a state in which the antibacterial and antiviral material is put into a wet bead mill device, the antibacterial and antiviral material is pulverized in the range of 1200 RPM to 1500 RPM for 1 to 2 hours, and the antibacterial and antiviral material has a diameter in the range of 1 nm to 500 nm. pre-treated in powder form,
Method for producing antibacterial antiviral ink. 6. The method of claim 5,
The stirring process is
In a state in which the antibacterial antiviral material solution, the dispersing agent, the organic antibacterial agent and the acrylic resin solution are put into a stirrer, stirring in the range of 1300 RPM to 1700 RPM for 1 to 2 hours,
Method for producing antibacterial antiviral ink.

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