KR102586840B1 - Semiconductor line robot cleaner composition - Google Patents

Abstract

The present invention relates to a semiconductor line robot cleaning composition. The semiconductor line robot cleaning composition according to one embodiment of the present invention comprises ethanol, citric acid, DL-malic acid, a grapefruit seed extract, and purified water, which are included at a weight ratio of 0.5 to 1.5 parts by weight of ethanol, 0.5 to 1.5 parts by weight of citric acid, 0.1 to 0.3 parts by weight of DL-malic acid, 0.1 to 1 part by weight of a grapefruit seed extract, and 80 to 120 parts by weight of purified water. The semiconductor line robot cleaning composition according to various embodiments of the present invention is applied to a clean room floor or various equipment in a semiconductor factory. The semiconductor line robot cleaning composition is not irritating to the human body, has excellent deodorizing and sterilizing properties, and has excellent cleaning power to remove contaminants.

Description

Semiconductor line robot cleaning composition {SEMICONDUCTOR LINE ROBOT CLEANER COMPOSITION}

The present invention relates to a semiconductor line robot cleaning composition. More specifically, it is applied to the clean room floor or various equipment in a semiconductor factory and is not only non-irritating to the human body, but also has excellent deodorizing and sterilizing properties and has a cleaning power to remove contaminants. This relates to an excellent semiconductor line robot cleaning composition.

Generally, in industrial fields such as semiconductors, electronics, automobiles, and precision parts, detergents are used to remove oil and foreign substances during processing and surface treatment of materials and parts, or to remove contamination occurring in industrial parts or equipment.

For example, in the semiconductor and FPD (Flat Panal Display) manufacturing process, ultra pure water is used to remove as much as possible organic matter, inorganic matter, particulates, and microorganisms dissolved in water to have an electrical specific conductivity in a range that can improve the reliability of the device. ) is used as a cleaner, and in addition to the above cleaner, wet chemicals such as strippers and etching solutions are used.

However, although the ultrapure water has minimal bacteria and the cleaning process is not in an open circulation state, even a very small amount of microorganisms in the ultrapure water causes slime and dead bacteria to become stuck on the inner wall of the tank or in the pipes.

In addition, when chemical products used in wet processes in the semiconductor and FPD manufacturing process do not completely dissolve the target object (particles, heavy metals, photoresist metal film, etc.) and only peel it off, floating substances may stick to tanks or pipe joints. Sedimentation phenomenon also occurs.

If some of the contaminants generated in this way leak out due to the flow rate and adhere to the cleaning film before proceeding with the next process, pinholes or pits in the film, disconnections or bridges in the wiring, etc. occur, causing a decrease in the manufacturing yield of the product.

Therefore, in order to remove these contaminants, cleaning is regularly performed for maintenance of equipment, but in the case of piping installed for process purposes, it is difficult to remove contaminants unless they are separated and cleaned. In addition, unless physical force is applied with a brush or the like to remove contaminants from inside the tank or equipment, the effect will not meet expectations. Ultimately, the operation of production facilities must be stopped in order to remove these contaminants, and economic losses are inevitable.

Therefore, in order to avoid the above-mentioned economic loss, various cleaning agents with enhanced cleaning power are being developed. For example, in Korean Patent Publication No. 10-2016-0092128 (August 4, 2016), it is used for semiconductor and display manufacturing processes. A detergent composition is disclosed.

However, although these compositions have the advantage of simultaneously removing metal contaminants and organic and inorganic particles, they lack the ability to prevent reattachment of particles, do not provide sufficient contaminant removal power, and have the problem that secondary contamination may occur. there is.

Domestic registered patent No. 10-2326028 (registered on November 8, 2021) Domestic Registered Patent No. 10-2461832 (registered on October 27, 2022) Domestic registered patent No. 10-2146036 (registered on August 12, 2020)

The problem to be solved by the present invention is to provide a semiconductor line robot cleaner composition that is not irritating to the human body when applied to the clean room floor or various equipment in a semiconductor factory, has excellent deodorizing and sterilizing power, and has excellent cleaning power to remove contaminants. is to provide.

In addition, the problem to be solved by the present invention is to prevent secondary contamination from occurring due to re-attachment of contaminants after metal contaminants or organic/inorganic contaminants are removed, and to prevent decrease in production efficiency in semiconductor factories due to contaminants. The aim is to provide a cleaning composition for a semiconductor line robot.

The various problems to be solved by the present invention are not limited to the problems mentioned above, and other problems not mentioned will be clearly understood by those skilled in the art from the description below.

In one embodiment of the technical idea of the present invention, a semiconductor line robot cleaning composition is disclosed.

The semiconductor line robot cleaning composition includes ethanol, citric acid, DL-malic acid, grapefruit seed extract, and purified water.

In addition, the semiconductor line robot cleaning composition includes 0.5 to 1.5 parts by weight of ethanol, 0.5 to 1.5 parts by weight of citric acid, 0.1 to 0.3 parts by weight of DL-malic acid, 0.1 to 1 part by weight of grapefruit seed extract, and 80 to 120 parts by weight of purified water. may be included.

In addition, the semiconductor line robot cleaning composition may further include vitamin B1 lauryl sulfate, sodium benzoate, peracetic acid, antibacterial nano powder, and disinfectant solution in addition to the ethanol, citric acid, DL-malic acid, grapefruit seed extract, and purified water.

Specific details of other embodiments are included in the detailed description.

The semiconductor line robot cleaning composition according to various embodiments of the technical idea of the present invention is applied to the clean room floor or various equipment in a semiconductor factory and is not only non-irritating to the human body, but also has excellent deodorizing and sterilizing properties and removes contaminants. The cleaning power is excellent.

In addition, the semiconductor line robot cleaning composition according to various embodiments of the technical idea of the present invention prevents secondary contamination from reattaching contaminants after metal contaminants or organic/inorganic contaminants are removed, and prevents secondary contamination from occurring in the semiconductor due to contaminants. Decreased production efficiency in factories can be prevented.

It will be fully understood that various embodiments of the technical idea of the present invention can provide various effects that are not specifically mentioned.

The advantages and features of the present invention, and methods for achieving them, will become clear with reference to the embodiments described in detail below. However, the present invention is not limited to the embodiments described herein and may be embodied in other forms. Rather, the embodiments introduced herein are provided so that the disclosure will be thorough and complete and so that the spirit of the invention can be sufficiently conveyed to those skilled in the art.

The terms used in this application are only used to describe specific embodiments and are not intended to limit the invention. Singular expressions include plural expressions unless the context clearly dictates otherwise.

Unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as generally understood by a person of ordinary skill in the technical field to which the present invention pertains. Terms defined in commonly used dictionaries should be interpreted as having a meaning consistent with the meaning in the context of the related technology, and should not be interpreted as having an ideal or excessively formal meaning unless explicitly defined in the present application. No.

Hereinafter, a semiconductor line robot cleaning composition according to an embodiment of the technical idea of the present invention will be described in detail with preferred embodiments.

The semiconductor line robot cleaning composition according to an embodiment of the technical idea of the present invention includes ethanol, citric acid, DL-malic acid, grapefruit seed extract, vitamin B1 lauryl sulfate, sodium benzoate, peracetic acid, antibacterial nano powder, disinfectant solution, and purified water. Includes.

In addition, the semiconductor line robot cleaning composition according to an embodiment of the technical idea of the present invention includes 0.5 to 1.5 parts by weight of ethanol, 0.5 to 1.5 parts by weight of citric acid, 0.1 to 0.3 parts by weight of DL-malic acid, and 0.1 to 1 part by weight of grapefruit seed extract. , 0.3 to 0.7 parts by weight of vitamin B1 lauryl sulfate, 0.2 to 0.6 parts by weight of sodium benzoate, 0.05 to 0.25 parts by weight of peroxyacetic acid, 0.1 to 0.3 parts by weight of antibacterial nanopowder, 0.3 to 0.7 parts by weight of sterilizing solution, and 80 to 120 parts by weight of purified water. It may be included in a negative weight ratio.

The ethanol is a colorless, flammable compound, a type of alcohol, and the main ingredient in alcohol. Its chemical formula is C ₂ H ₆ O, and it can be mixed with water or ether. When burned, it produces a transparent, light blue flame and produces water and carbon dioxide. Steam is explosive and is sometimes used as fuel in some internal combustion engines. Ethanol is the basis of the alcoholic beverage industry, is involved in various industrial processes, and is widely used as a solvent, disinfectant, and fuel.

The ethanol has excellent deodorizing effect, deodorizing power for inorganic and organic substances, sterilizing power, deodorizing power and antibacterial power, and improves the volatility of the cleaning composition to minimize contamination and residual sensation that may be caused by remaining with contaminants on the target surface. You can.

The citric acid is used as an acidity regulator to adjust the acidity of the detergent composition to an appropriate range. It is a basic acid found in sour fruits such as lemons and tangerines and is a colorless and odorless crystal. Most of the citric acid available on the market is produced through microbial fermentation and is widely used in soft drinks, pharmaceuticals, and industrial materials. Citric acid contributes to the stability of detergent compositions and has the effect of increasing antioxidant activity.

The DL-malic acid, also called malic acid, is an acidic food additive used to give a sour taste to foods. It has a hydroxyl group (OH) and is highly effective in preventing rancidity because it is preserved and maintained for a long time. .

The grapefruit seed extract (GSE) has antibacterial, antifungal, and antioxidant effects, and in toxicity tests, it was confirmed to be almost non-toxic compared to sodium benzoate and potassium sorbate. In particular, among the components of the grapefruit seed extract, ascorbic acid, ascorbyl palmitate, and tocopherol weaken the function of the cell walls and membranes of putrefactive and pathogenic microorganisms, inhibit enzyme activity, and prevent cell proliferation mechanisms originating from DNA/RNA, thereby preventing bacteria. , it has a sterilizing effect on yeast and mold, and has an inhibitory effect on the growth and toxin synthesis of mold.

The vitamin B1 lauryl sulfate has a molecular weight of 815.19, CAS No. 39479-63-5, and is a colorless or white crystal or white crystalline powder with no odor or a slightly unique odor. Since it was known that vitamin B1 lauryl sulfate can be used as a food nutritional enhancer and has antibacterial properties, it has been in the spotlight as a preservative in various food factories. In addition, the vitamin B1 lauryl sulfate has recently been studied to replace disinfectants used in various fields using TLS, and is being developed as an eco-friendly disinfectant that is completely harmless to the human body.

The sodium benzoate is a type of preservative used to prevent spoilage and deterioration caused by the growth of microorganisms, and inhibits the growth of bacteria, mold, yeast, etc. in food.

The peroxyacetic acid may be used at a concentration of 0.05 (w/w)%. The peroxyacetic acid has a molecular formula of CH ₃ COOOH, is highly reactive, and is dissolved in just a few drops by oxygen radicals. It is also known to have the property of eradicating various types of bacteria. The hydrocarbon terminus of peroxyacetic acid easily penetrates into microbial cells such as bacteria and decomposes SS and SH bonds inside and outside the microorganisms, leading to rapid and effective antibacterial activity.

When the peroxyacetic acid is contacted with an organic material, atomic oxygen radicals are generated as shown in [Reaction Formula 1] below, and the generated oxygen radicals oxidize the contacted organic material to exert a sterilizing effect.

[Scheme 1]

CH ₃ COOOH + H ₂ O ↔ CH ₃ COOH + ·O ₂

Therefore, peroxyacetic acid is generally used as a cleaning agent for medical devices to remove pathogenic microorganisms, and is used in various fields such as air conditioner filters, cooking utensil cleaners, and hand sanitizers.

The antibacterial nanopowder may be an antibacterial nanopowder in which titanium dioxide (TiO ₂ ) nanopowder, cloisonne nanopowder, and shungite nanopowder are mixed at a weight ratio of 1:1:1, and the titanium dioxide (TiO ₂ ) Nanopowders are photocatalysts, which can absorb light and promote chemical reactions.

In other words, these photocatalysts mainly generate electrons and holes when light energy above the band gap energy is irradiated, and hydroxyl radicals (-OH) are generated by the generated holes, and the strong oxidizing power of the hydroxyl radicals is generated by the generated holes. It refers to a substance that causes a so-called 'photooxidation reaction' that decomposes gaseous or liquid organic substances adsorbed on the surface.

The photocatalyst exhibits catalytic activity by absorbing light energy, and the strong oxidizing power generated at this time oxidizes and decomposes harmful substances emitted from contaminants. These photocatalysts are mainly used to purify organic polluted water by using their properties to decompose bacteria, microorganisms, and organic substances.

In addition, the cloisonne nanopowder can emit far-infrared rays and negative ions, and provide antibacterial, deodorizing, and purifying effects. The cloisonne nanopowder expands capillaries, prevents cancer, prevents dementia, and promotes cell growth necessary for human activity. It can have the effect of activating .

In particular, when looking at the compounds analyzed in the Chiljem, it contains more than 60% of SiO ₂ , so it has an excellent dehumidifying effect. It contains a large amount of activated alumina, etc., so it is rich in minerals and has a purifying effect by neutralizing alkali salts.

In addition, the shungite nanopowder can be manufactured by pulverizing shungite into nano-size powder, and the shungite is a material containing SiO ₂ (silicate) and C ₆₀ (fullerene) as main components. As, it means a material containing natural fullerene. Shungite containing more than 90% fullerene is called elite shungite or noble shungite, and shungite containing less than 60% fullerene is called normal shungite.

Representative functions of the shungite include antioxidant function, electromagnetic wave blocking function, purification and decomposition function of pollutants, and sterilization and antibacterial function. The sunjit is a powerful natural antioxidant that has the function of increasing human immunity against numerous diseases, has the function of purifying water and air by adsorbing pollutants, and has the ability to decompose adsorbed pollutants on its own.

In addition, the shungite has antibacterial and sterilizing properties and has the function of removing more than 99% of Escherichia coli, Pseudomonas aeruginosa, Staphylococcus aureus and harmful bacteria, blocking harmful electromagnetic waves, and emitting a large amount of far-infrared rays.

The sterilizing solution has excellent sterilizing activity and can kill spoilage bacteria or pathogens. For example, a sterilizing solution prepared by the following method may be used.

First, to prepare the sterilizing solution, sodium citrate and succinic acid can be mixed with purified water and then stirred to prepare a first solution.

For example, the first solution can be prepared by mixing 3 to 7 parts by weight of sodium citrate and 1 to 5 parts by weight of succinic acid with respect to 100 parts by weight of purified water and then stirring. The sodium citrate has a deodorizing effect, It is included to improve the odor removal effect and increase stability, and the succinic acid may be included to increase the odor removal efficiency of sulfur compound-based materials.

Next, a second solution can be prepared by mixing ethanol and hypochlorous acid (HOCl) in purified water and then stirring.

For example, the second solution may be prepared by mixing 20 to 40 parts by weight of ethanol and 8 to 12 parts by weight of hypochlorous acid (HOCl) with respect to 100 parts by weight of purified water and then stirring.

The ethanol has a quick deodorizing effect and is excellent in deodorizing and deodorizing inorganic and organic substances, etc., and the hypochlorous acid (HOCl) has an instantaneous sterilizing effect in seconds against all microorganisms such as bacteria, mold, and yeast viruses. Or, when in contact with organic matter, it is immediately reduced to water after sterilization and does not remain, so it has no environmental load and is harmless to the human body. It is a safe disinfectant whose safety is recognized by various organizations around the world such as the Korea Food and Drug Administration, the U.S. Food and Drug Administration, and the Japanese Ministry of Health, Labor and Welfare. It was approved and no harmful effects were detected in animal tests or stimulation tests.

In addition, hypochlorous acid (HClO) has approximately 70 times the sterilizing power of sodium hypochlorite (NaOCl), and can be used safely because it does not produce tri-halo-methane (THM), a characteristic of chlorine-based disinfectants. It is a disinfectant selected by the Ministry of Food and Drug Safety as a food disinfectant and can be used in various fields such as the food industry, agriculture, and medical devices.

Next, a third solution can be prepared by mixing purified water with phosphoric acid and chlorine dioxide solution and then stirring.

For example, the third solution can be prepared by mixing 1 to 3 parts by weight of phosphoric acid and 10 to 20 parts by weight of chlorine dioxide solution with respect to 100 parts by weight of purified water and then stirring.

Phosphoric acid is an acid produced by hydrolysis of phosphorus pentoxide. In a broad sense, it is a type of phosphorus oxyacid. Phosphoric acid, which is the raw material of phosphorus pentoxide, is [P ₂ O ₅ ]. Although it is expressed as an empirical formula, the actual molecular formula is [P ₄ O ₁₀ ], and can be obtained through the reaction of white phosphorus (P ₄ ) and oxygen as shown in [Reaction Scheme 1] below. Through this oxidation process, phosphorus has the highest oxidation number of +5.

[Scheme 1]

[Scheme 2]

Referring to [Reaction Scheme 2] above, H ₃ PO ₄ , the product of the phosphorus pentoxide hydrolysis reaction, is the simplest form of phosphoric acid and is called orthophosphoric acid (orthophosphoric acid), and is formed by a condensation reaction of the two orthophosphoric acid molecules. Pyrophosphoric acid (also called pyrophosphoric acid, diphosphoric acid, or acetophosphoric acid) can be obtained.

Purified phosphoric acid is a crystalline solid at room temperature (melting point: 42.3℃) and has a density of 2.030g/cm ³ (based on 25℃). Phosphoric acid dissolves in water at approximately 446g/100mL (based on 14.95℃) and is an aqueous solution. It acts as a triprotic acid, giving up to three protons, and can create three anions: H ₃ PO ₄ ^- , HPO ₄ ^{2 -} , and PO ₄ ^{3 -} .

The aqueous chlorine dioxide can be prepared, for example, using powdered sodium chlorite and hydrogen chloride solutions, and can be prepared using sodium chlorine solution and hydrogen chloride solution, but is not limited to this. Additionally, the chlorine dioxide solution may have a concentration of 50 to 150 ppm.

The chlorine dioxide water is not highly toxic, is safe, and does not cause pollution, so it is environmentally friendly. Since it has a strong oxidizing effect, it is used as a sterilizing agent for purified water or as a bleaching agent or deodorizer for paper, fiber, and food.

Subsequently, a sterilizing solution can be prepared by mixing the natural extract with the mixed solution of the first solution, second solution, and third solution and then stirring.

For example, the mixed solution may be prepared by mixing 10 parts by weight of the first solution, 30 parts by weight of the second solution, and 20 parts by weight of the third solution, and the sterilizing solution is a natural It can be prepared by mixing the extract at a weight ratio of 10 to 20 parts by weight.

The natural extract can provide effects such as antibacterial and deodorizing properties. The natural extract can be prepared by mixing ingredients made of cypress and grapefruit seeds and then extracting them.

For example, the natural extract is mixed with the materials consisting of the cypress tree and grapefruit seeds at a weight ratio of 1:1, and mixed at a weight ratio of 2,500 to 3,500 parts by weight of water for 100 parts by weight of the total mixed materials. It can be manufactured by heating at a temperature of 90 to 95°C for 5 to 10 hours and performing hot water extraction.

The cypress tree (Chamaecyparis obtusa), also called cypress tree, is an evergreen tree of the gymnosperm cone family Cupressaceae. It is native to Japan, but through development, it is widely cultivated as a plantation tree species in the southern region of Korea due to its unique scent. It is used as a deodorant and antibacterial agent.

Phytoncide produced from the cypress tree is a self-defense substance of the plant. It is a substance emitted or secreted by the plant to resist pathogens, pests, and mold. It itself contains sterilizing and insecticidal ingredients. Phytoncide is an organic compound made up of phenolic compounds including terpenes, alkaloids, and glycosides, and is known to have antibacterial, sedative, deodorizing, and stress-relieving effects. These phytoncides are natural substances, not chemically synthesized substances, are easily absorbed by the human body, and selectively sterilize harmful bacteria to humans.

In addition, phytoncide is known to have numerous functions such as antibacterial, deodorizing, soothing and stress relieving effects, and has excellent sterilizing, antibacterial and cleansing effects to cleanse and moisturize the skin and strengthen the body's immune function.

Research results have reported that when phytoncide is inhaled, the concentration of cortisol, a stress hormone, is dramatically reduced, and it is known that even when animal carcasses rot in the forest, phytoncide does not cause a strong odor. In addition, it has a sedative effect on the central nervous system, creating a pleasant feeling, extending sleep time, and helping you get a comfortable sleep.

It has also been found to be effective in treating hyperlipidemia, thrombosis, and heart failure by improving the blood circulation system, and is also known to have a strong antibacterial effect that does not create resistance in the human body. Phytoncide, a natural substance, is known to have a house dust mite repellent effect of up to 90% and is the most effective in preventing allergies without causing any side effects.

The grapefruit seeds contain ascorbic acid, sterol, dehydroascorbic acid, tocopherol, palmitic acid, etc. as main ingredients, and various active ingredients weaken the enzyme activity and permeability of the cell membrane of microorganisms and inhibit cellular respiration, thereby promoting the growth of microorganisms. It is known to hinder

In particular, the grapefruit seeds contain bioflavonoids naringin and citral as main ingredients, so they not only have excellent antibacterial and antioxidant effects, but also have excellent antibacterial effects against gram-positive and gram-negative bacteria as well as mold.

The purified water may be included to dissolve, uniformly disperse, and mix the detergent composition.

Hereinafter, a semiconductor line robot cleaning composition according to an embodiment of the technical idea of the present invention will be described in more detail through examples.

<Example 1>

1 part by weight of ethanol, 1 part by weight of citric acid, 0.2 part by weight of DL-malic acid, 0.5 part by weight of grapefruit seed extract, 0.5 part by weight of vitamin B1 lauryl sulfate, 0.4 part by weight of sodium benzoate, 0.15 part by weight of peroxyacetic acid, 0.2 part by weight of antibacterial nano powder. A detergent composition was prepared by mixing 0.5 parts by weight of a disinfectant solution and 100 parts by weight of purified water in a weight ratio.

At this time, the sterilizing solution prepared by the following method was used.

That is, in order to prepare the sterilizing solution, first, a first solution was prepared by mixing 5 parts by weight of sodium citrate and 3 parts by weight of succinic acid in a weight ratio with respect to 100 parts by weight of purified water, and then stirring. A second solution was prepared by mixing 30 parts by weight of ethanol and 10 parts by weight of hypochlorous acid (HOCl) and then stirring, and mixing 2 parts by weight of phosphoric acid and 15 parts by weight of chlorine dioxide with respect to 100 parts by weight of purified water. After mixing, the mixture was stirred to prepare a third solution.

Next, a mixed solution was prepared by mixing 10 parts by weight of the first solution, 30 parts by weight of the second solution, and 20 parts by weight of the third solution, and 15 parts by weight of the natural extract was added to 100 parts by weight of the mixed solution. After mixing, the mixture was stirred to prepare a sterilizing solution.

In addition, the natural extract is prepared by mixing materials consisting of cypress trees and grapefruit seeds at a weight ratio of 1:1, and mixing 3,000 parts by weight of water for 100 parts by weight of the total mixed materials, then mixing 90 to 95 parts by weight. It was prepared by heating at ℃ temperature for 7 hours and hot water extraction.

<Example 2>

A detergent composition was prepared using the same composition as Example 1. In Example 2, the detergent composition contained 0.7 parts by weight of ethanol, 1.3 parts by weight of citric acid, 0.12 parts by weight of DL-malic acid, 0.9 parts by weight of grapefruit seed extract, and vitamin B1 lauryl. It was prepared by mixing 0.4 parts by weight of sulfate, 0.55 parts by weight of sodium benzoate, 0.09 parts by weight of peroxyacetic acid, 0.15 parts by weight of antibacterial nanopowder, 0.4 parts by weight of sterilizing solution, and 110 parts by weight of purified water.

<Example 3>

A detergent composition was prepared using the same composition as in Example 1. In Example 3, the detergent composition contained 1.4 parts by weight of ethanol, 0.7 parts by weight of citric acid, 0.27 parts by weight of DL-malic acid, 0.3 parts by weight of grapefruit seed extract, and vitamin B1 lauryl. It was prepared by mixing 0.6 parts by weight of sulfate, 0.3 parts by weight of sodium benzoate, 0.22 parts by weight of peroxyacetic acid, 0.25 parts by weight of antibacterial nanopowder, 0.6 parts by weight of sterilizing solution, and 90 parts by weight of purified water.

<Comparative Example 1>

Deionized water was prepared, and this was used as the detergent composition according to Comparative Example 1. The deionized water was obtained by removing ions from the water, and the deionized water had a resistivity of 18 MΩ·cm.

<Comparative Example 2>

A detergent composition was prepared using the same composition as Example 2. In Comparative Example 2, the detergent composition contained 0.7 parts by weight of ethanol, 1.3 parts by weight of citric acid, 0.4 parts by weight of vitamin B1 lauryl sulfate, 0.55 parts by weight of sodium benzoate, and antibacterial nanopowder. It was prepared by mixing 0.3 parts by weight and 110 parts by weight of purified water.

1. Evaluation of cleaning power

To evaluate the cleaning power, a laboratory-use stirred mixing type cleaning power tester (Terg-o-tometer) was used. The cleaning power measurement temperature was operated at 20°C and a rotation speed of 100, the sample amount was 5 g of the detergent composition according to Example 1, the washing time was 5 minutes, and rinsing was performed twice for 3 minutes each. The artificial contamination cloth used for measurement was a wet artificial contamination cloth from the Japan Laundry Science Association.

Eight wet artificial contamination cloths were used per sample with a size of 5cm x 5cm. The washing effect for each contaminated cloth before and after washing was measured by measuring the Wb value using a colorimeter (Nippon denshoku) and compared using Equation 1 below. The comparative detergent was a standard Korean Industrial Standard synthetic detergent. Compared to this, if the cleaning power was superior, it was marked as good, and if the cleaning power was not superior, it was marked as poor.

The stability and cleaning power results of the detergent composition prepared according to Example 1 are shown in Table 1 below.

division Example 1 Change in appearance over time (16 weeks) Stored at 25℃ Good cleaning power Good

2. Acidity measurement

The acidity of the detergent composition prepared according to Example 1 was measured.

The acidity was measured using Orion 3-star (Thermo), and as a measurement method, 5 g of the detergent composition was placed in a 100 ml beaker, 30 ml of water was added, heated, and pH was measured at 25°C.

division Example 1 acidity slightly alkaline

Referring to [Table 2], it can be seen that the detergent composition prepared according to Example 1 has a slightly alkaline acidity and basicity.

3. Evaluation of cleaning power

In order to evaluate the cleaning power of the detergent compositions prepared according to Examples 1, 2, 3 and Comparative Examples 1 and 2, a stainless steel plate measuring 5 After that, the cleaning power was measured using a residual carbon meter (RC212, Surface Carbon Determination, LECO Co).

At this time, the cleaning power was measured using a 5-point scale, and the results are shown in [Table 3] below.

1 point: Removal of more than 30% of contamination

2 points: Removal of more than 50% of contamination

3 points: More than 80% contamination removed

4 points: More than 90% contamination removed

5 points: More than 98% contamination removed

In addition, in order to measure the contact angle of the detergent composition prepared according to Examples 1, 2, 3 and Comparative Examples 1 and 2, a stainless steel plate of 5 The contact angle was measured using Contact Angle System (OCAm Dataphysics) and is shown in [Table 3] below.

division Surface tension (dyne/cm) Cleansing power Contact angle (°) Example 1 29.35 5 78.4 Example 2 29.27 5 77.9 Example 3 29.42 5 78.2 Comparative Example 1 17.66 2 49.5 Comparative Example 2 22.18 3 56.3

Referring to [Table 3], the detergent compositions prepared according to Examples 1 to 3 showed a high contact angle after cleaning, which not only made it difficult to recontaminate, but also showed excellent cleaning power.

On the other hand, the detergent compositions prepared according to Comparative Examples 1 and 2 have a low contact angle, which may cause recontamination, and also have a low surface tension, which reduces penetrating power, making it difficult to easily remove contaminants.

4. Corrosivity evaluation

To evaluate the corrosion resistance of the detergent composition prepared according to Examples 1, 2, 3 and Comparative Examples 1 and 2, aluminum pieces (2 mm thick, 70 mm long, 20 mm wide) and copper foil (1 mm thick, 70 mm long, 10 mm wide) were used. was prepared, impregnated with press processing oil {ACRO PN 1010DW, Kukdong Oil Co., Ltd.}, taken out, left at room temperature for 5 minutes, and added to the detergent composition prepared according to Examples 1, 2, 3 and Comparative Examples 1 and 2. Each was immersed for 5 minutes, the oil was removed, dried, and left for 24 hours to evaluate the corrosion state.

The evaluation criteria are shown in [Table 4] below, and the results are shown in [Table 5] below.

Corrosivity evaluation division Corrosion degree ◎ No oxidation corrosion occurs on the surface of the specimen. ○ Some oxidation corrosion appears on the surface of the specimen (1-2% of surface area). △ Some oxidation corrosion appears on the surface of the specimen (3-10% of the surface area). × Some oxidation corrosion appears on the surface of the specimen (exceeding 10% of the surface area).

division Corrosive results Example 1 ◎ Example 2 ◎ Example 3 ◎ Comparative Example 1 △ Comparative Example 2 ○

Referring to [Table 5], it can be seen that the detergent compositions prepared according to Examples 1 to 3 have excellent corrosive effects.

Although a preferred embodiment of the present invention has been described above, those skilled in the art will understand that the present invention can be implemented in other specific forms without changing the technical idea or essential features. You will be able to. Therefore, the embodiment described above should be understood as illustrative in all respects and not restrictive.

Claims (6)

Contains ethanol, citric acid, DL-malic acid, grapefruit seed extract and purified water,
It is contained in a weight ratio of 0.5 to 1.5 parts by weight of ethanol, 0.5 to 1.5 parts by weight of citric acid, 0.1 to 0.3 parts by weight of DL-malic acid, 0.1 to 1 part by weight of grapefruit seed extract, and 80 to 120 parts by weight of purified water,
In addition to the ethanol, citric acid, DL-malic acid, grapefruit seed extract, and purified water, it further contains vitamin B1 lauryl sulfate, sodium benzoate, peroxyacetic acid, antibacterial nano powder, and sterilizing solution,
0.5 to 1.5 parts by weight of ethanol, 0.5 to 1.5 parts by weight of citric acid, 0.1 to 0.3 parts by weight of DL-malic acid, 0.1 to 1 part by weight of grapefruit seed extract, 0.3 to 0.7 parts by weight of vitamin B1 lauryl sulfate, 0.2 to 0.6 parts by weight of sodium benzoate. parts, 0.05 to 0.25 parts by weight of peroxyacetic acid, 0.1 to 0.3 parts by weight of antibacterial nanopowder, 0.3 to 0.7 parts by weight of sterilizing solution, and 80 to 120 parts by weight of purified water,
The antibacterial nanopowder is a semiconductor line robot cleaner composition, characterized in that the antibacterial nanopowder is a mixture of titanium dioxide (TiO ₂ ) nanopowder, chiljeon nanopowder, and shungite nanopowder in a weight ratio of 1:1:1. .
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