A gas-liquid two-phase state sterilization cleaning agent for a washing machine and a preparation method thereof

Abstract

The application provides a gas-liquid two-phase state sterilization cleaning agent for a washing machine, which is composed of A liquid and B liquid in a weight ratio of 1:80; the A liquid is made of the following raw materials in parts by weight: EDI pure water 60-99 parts, quaternary ammonium salt sterilization agent 5-35 parts, surfactant 1-5 parts, lactic acid 0.2-0.5 parts, citric acid 0.2-0.5 parts, essence 0.2-0.5 parts and thickening agent 0.2-0.5 parts; the B liquid is made of the following raw materials in parts by weight: EDI pure water 85-99 parts and sodium chlorite 1-15 parts. The application also provides a preparation method of the gas-liquid two-phase state sterilization cleaning agent. The gas-liquid two-phase state sterilization cleaning agent provided by the application has good cleaning performance and sterilization performance, and can achieve the effect of gas-liquid two-state sterilization.

Description

Technical Field

[0001] This invention relates to a bactericidal cleaning agent, and more particularly to a gas-liquid two-phase bactericidal cleaning agent for washing machines and its preparation method. Background Technology

[0002] Washing machines are among the most common household appliances. A washing machine drum generally consists of a water tank and a washing tub, with the washing tub located inside the water tank. Both tubs come into contact with the same water simultaneously. The washing tub is visible and easy to clean; however, because the washing tub obstructs the water tank, it must be disassembled to clean the water tank. This is especially true for front-loading washing machines, where the washing tub is more difficult to disassemble. Even professionals need half a day to complete the disassembly, resulting in cleaning a single washing machine taking a whole day—a waste of time and effort.

[0003] Chinese patent application CN201911199429.7 discloses a "washing machine tub cleaning agent and its preparation method," wherein the washing machine tub cleaning agent is composed of the following components by mass percentage: 10-30% percarbonate, 12-20% biological enzyme preparation, 11-15% chelating agent, 6-10% corrosion inhibitor, 6-10% surfactant, and the balance being water, with the sum of the mass percentages of the above components being 100%. The washing machine tub cleaning agent provided by this invention has unsatisfactory cleaning and sterilization effects in actual use. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a gas-liquid dual-phase bactericidal cleaning agent for washing machines, which has good cleaning and bactericidal performance and can achieve the effect of gas-liquid dual-phase bactericidal action.

[0005] To solve the above-mentioned technical problems, the technical solution of the present invention is as follows:

[0006] A gas-liquid dual-phase bactericidal cleaning agent for washing machines is composed of liquid A and liquid B in a weight ratio of 1:80. Liquid A is made from the following raw materials in parts by weight: 60-99 parts EDI pure water, 5-35 parts quaternary ammonium salt bactericide, 1-5 parts surfactant, 0.2-0.5 parts lactic acid, 0.2-0.5 parts citric acid, 0.2-0.5 parts fragrance, and 0.2-0.5 parts thickener. Liquid B is made from the following raw materials in parts by weight: 85-99 parts EDI pure water and 1-15 parts sodium chlorite.

[0007] Furthermore, the quaternary ammonium salt bactericide of the present invention is one of benzalkonium chloride, benzalkonium bromide, and dicedyldimethylammonium chloride.

[0008] Furthermore, the surfactant described in this invention is an amphoteric surfactant or a nonionic surfactant.

[0009] Furthermore, the zwitterionic surfactant of the present invention is cocamidopropyl betaine, and the nonionic surfactant is nonylphenol polyoxyethylene ether.

[0010] Furthermore, the flavoring described in this invention is lemon flavoring.

[0011] Furthermore, the thickener described in this invention is xanthan gum.

[0012] Another technical problem to be solved by the present invention is to provide a method for preparing the above-mentioned gas-liquid two-phase bactericidal cleaning agent for washing machines.

[0013] To solve the above technical problems, the technical solution is as follows:

[0014] A method for preparing a gas-liquid two-phase bactericidal cleaning agent for washing machines includes the following steps:

[0015] S1. Weigh the raw materials of liquid A according to the weight parts, put the raw materials of liquid A into the mixing pot, stir at room temperature for 10-20 minutes to obtain a mixture, and then let it stand until the bubbles on the surface of the mixture disappear to obtain liquid A.

[0016] S2. Weigh the raw materials for liquid B according to the weight proportions, put the raw materials for liquid B into the mixing pot, and stir at room temperature until they are evenly mixed to obtain liquid B.

[0017] Furthermore, in step S1 of the present invention, the stirring speed at room temperature is 500-1000 rpm.

[0018] Furthermore, in step S2 of the present invention, the stirring speed at room temperature is 500-1000 rpm.

[0019] The method of using the gas-liquid dual-phase bactericidal cleaning agent of the present invention is as follows:

[0020] Mix liquid A and liquid B, shake 10 times, pour into the washing machine drum, turn on the washing machine's washing function, and wash for 45-60 minutes.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] 1. When in use, the liquid quaternary ammonium salt bactericide can effectively sterilize the washing machine parts it can contact, achieving a liquid sterilization effect. On the other hand, the sodium chlorite in liquid B of this invention reacts with the citric acid in liquid A to produce chlorine dioxide. Then, under its own volatilization and the centrifugal force generated by the rotation of the washing machine during washing, the chlorine dioxide is atomized into particles smaller than 20μm, which is chlorine dioxide aerosol. Chlorine dioxide aerosol can sterilize the inside of the washing machine drum to achieve non-contact sterilization. Moreover, chlorine dioxide aerosol can reach dead corners that liquid cannot reach with the help of the centrifugal force of the washing machine, such as the top cover of the washing machine, the top of the drum, and the outer casing of the drum. After these parts come into contact with chlorine dioxide aerosol, the mold on these parts will be killed, thereby achieving a gaseous sterilization effect.

[0023] 2. The quaternary ammonium salt bactericide, surfactant, lactic acid and citric acid in the liquid A of this invention form an acidic system that can perform deep cleaning of the washing machine, including stubborn dirt, lint, hair and other debris on the inner surface of the drum, the outer surface of the drum and the pipes of the machine. The dirt will decompose or fall off when it comes into contact with the acidic solvent containing strong surfactants, thereby achieving the effect of cleaning and descaling.

[0024] 3. The quaternary ammonium salt bactericide and surfactant in solution A of this invention will micro-encapsulate the chlorine dioxide aerosol, reduce the volatilization rate of the chlorine dioxide aerosol, and allow the chlorine dioxide aerosol to reach every corner of the washing machine drum. Moreover, the volatilization rate is slow and has no adverse effects on the operator.

[0025] 4. This invention can deeply clean bacteria and other residues on the rubber seals of washing machines through the combined action of surfactants, acids and chlorine dioxide.

[0026] 5. This invention can effectively clean stubborn dirt and sterilize, and unlike other products on the market, it does not require long soaking time (5-8 hours). The A and B solutions of this invention can be mixed before use to ensure maximum coverage of aerosols. There is no need to disassemble the washing machine drum, making it very convenient to use. Detailed Implementation

[0027] The present invention will be described in detail below with reference to specific embodiments. The illustrative embodiments and descriptions of the present invention are used to explain the present invention, but are not intended to limit the present invention.

[0028] Example 1

[0029] This gas-liquid dual-phase bactericidal cleaning agent for washing machines consists of liquid A and liquid B in a weight ratio of 1:80. Liquid A is made from the following raw materials in parts by weight: 80 parts EDI pure water, 20 parts benzalkonium chloride, 3 parts cocamidopropyl betaine, 0.3 parts lactic acid, 0.4 parts citric acid, 0.3 parts lemon fragrance, and 0.4 parts xanthan gum. Liquid B is made from the following raw materials in parts by weight: 92 parts EDI pure water and 8 parts sodium chlorite.

[0030] The preparation method of Example 1 includes the following steps:

[0031] S1. Weigh the raw materials of liquid A according to the weight parts, put the raw materials of liquid A into the mixing pot, stir at room temperature at 800 rpm for 15 minutes to obtain the mixture, and then let it stand until the bubbles on the surface of the mixture disappear to obtain liquid A.

[0032] S2. Weigh the raw materials for liquid B according to the weight proportions, put the raw materials for liquid B into the mixing pot, and stir at room temperature at 800 rpm until they are evenly mixed to obtain liquid B.

[0033] Example 2

[0034] This gas-liquid dual-phase bactericidal cleaning agent for washing machines consists of liquid A and liquid B in a weight ratio of 1:80. Liquid A is made from the following raw materials in parts by weight: 60 parts EDI pure water, 5 parts benzalkonium bromide, 1 part cocamidopropyl betaine, 0.2 parts lactic acid, 0.2 parts citric acid, 0.2 parts lemon fragrance, and 0.2 parts xanthan gum. Liquid B is made from the following raw materials in parts by weight: 99 parts EDI pure water and 1 part sodium chlorite.

[0035] The preparation method of Example 2 includes the following steps:

[0036] S1. Weigh the raw materials of liquid A according to the weight parts, put the raw materials of liquid A into the mixing pot, stir at 500 rpm at room temperature for 20 minutes to obtain a mixture, and then let it stand until the bubbles on the surface of the mixture disappear to obtain liquid A.

[0037] S2. Weigh the raw materials for liquid B according to the weight proportions, put the raw materials for liquid B into the mixing pot, and stir at room temperature at 500 rpm until they are evenly mixed to obtain liquid B.

[0038] Example 3

[0039] This gas-liquid dual-phase bactericidal cleaning agent for washing machines consists of liquid A and liquid B in a weight ratio of 1:80. Liquid A is made from the following raw materials in parts by weight: 99 parts EDI pure water, 35 parts diecrystaldimethylammonium chloride, 5 parts cocamidopropyl betaine, 0.5 parts lactic acid, 0.5 parts citric acid, 0.5 parts lemon fragrance, and 0.5 parts xanthan gum. Liquid B is made from the following raw materials in parts by weight: 85 parts EDI pure water and 15 parts sodium chlorite.

[0040] The preparation method of Example 3 includes the following steps:

[0041] S1. Weigh the raw materials of liquid A according to the weight parts, put the raw materials of liquid A into the mixing pot, stir at 1000 rpm at room temperature for 10 minutes to obtain a mixture, and then let it stand until the bubbles on the surface of the mixture disappear to obtain liquid A.

[0042] S2. Weigh the raw materials for liquid B according to the weight proportions, put the raw materials for liquid B into the mixing pot, and stir at room temperature at a speed of 1000 rpm until they are evenly mixed to obtain liquid B.

[0043] Example 4

[0044] This gas-liquid dual-phase bactericidal cleaning agent for washing machines consists of liquid A and liquid B in a weight ratio of 1:80. Liquid A is made from the following raw materials in parts by weight: 70 parts EDI pure water, 10 parts benzalkonium chloride, 2 parts nonylphenol polyoxyethylene ether, 0.4 parts lactic acid, 0.3 parts citric acid, 0.4 parts lemon fragrance, and 0.3 parts xanthan gum. Liquid B is made from the following raw materials in parts by weight: 90 parts EDI pure water and 10 parts sodium chlorite.

[0045] The preparation method of Example 4 includes the following steps:

[0046] S1. Weigh the raw materials of liquid A according to the weight parts, put the raw materials of liquid A into the mixing pot, stir at 600 rpm at room temperature for 15 minutes to obtain a mixture, and then let it stand until the bubbles on the surface of the mixture disappear to obtain liquid A.

[0047] S2. Weigh the raw materials for liquid B according to the weight proportions, put the raw materials for liquid B into the mixing pot, and stir at room temperature at 600 rpm until they are evenly mixed to obtain liquid B.

[0048] Comparative Example 1:

[0049] The difference from Example 1 is that the raw materials of liquid A lack lactic acid and citric acid.

[0050] Comparative Example 2:

[0051] The difference from Example 1 is that citric acid is missing from the raw materials of solution A, and sodium chlorite is missing from the raw materials of solution B. Comparative example: Example 1 of Chinese Patent Application No. CN201911199429.7.

[0052] Experiment 1: Scale Removal Effect Test

[0053] Test samples: gas-liquid two-phase bactericidal cleaning agents prepared in Examples 1-4 and Reference Example 1, and comparative examples. Before testing, liquid A and liquid B prepared in Examples 1-4 and Reference Example 1 were mixed and shaken 10 times. The comparative examples were used directly.

[0054] Test method: Take a clean stainless steel cup, clean it with deionized water, dry it and weigh it to obtain M1. Fill it with 100mL of tap water, dry it and weigh it again to obtain M2. Dilute the test sample 80 times and pour it into the stainless steel cup. Use a magnetic stirrer to simulate a washing machine vortex cleaning at a speed of 3000 rpm for 45 minutes. After cleaning, remove the magnetic stirrer, rinse the stainless steel cup with deionized water, dry it and weigh it to obtain M3. Calculate the scale removal rate W according to the following formula:

[0055] Scale removal rate W: W% = 1 - (M2 - M3) / (M2 - M1).

[0056] A higher W value indicates a better scale removal effect. The test results are shown in Table 1.

[0057] Table 1

[0058] W(％) Example 1 96.4 Example 2 96.0 Example 3 98.3 Example 4 97.6 Reference Example 1 48.5 Comparative Example 77.8

[0059] As shown in Table 1, the W values ​​of Examples 1-4 of the present invention are all higher than those of the comparative example, indicating that the gas-liquid two-phase bactericidal cleaning agent prepared by the present invention has a better scale cleaning effect. Some raw materials in Reference Example 1 are different from those in Example 1. Compared with Example 1, the W value of Reference Example 1 is significantly lower, indicating that the lactic acid and citric acid used in the present invention can effectively improve the scale cleaning effect of the gas-liquid two-phase bactericidal cleaning agent.

[0060] Experiment Example 2: Space Sterilization Effect Test

[0061] Test samples: gas-liquid two-phase bactericidal cleaning agents prepared in Examples 1-4 and Reference Example 2, and comparative examples. Before testing, liquid A and liquid B prepared in Examples 1-4 and Reference Example 1 were mixed and shaken 10 times. The comparative examples were used directly.

[0062] Tested bacterial strains: Staphylococcus aureus, Staphylococcus epidermidis, Escherichia coli, Aspergillus niger.

[0063] Test method: Take a glass dish containing bacteria / mold (the number of bacteria / mold is N1), place the glass dish 5cm above the test sample, and place the container containing the test sample in a 60℃ water bath for 30 minutes. Remove the glass dish and record the number of bacteria / mold as N2. Calculate the sterilization rate using the following formula:

[0064] Sterilization rate / % = (N1-N2) / N1.

[0065] A higher sterilization rate indicates a better space sterilization effect. The test results are shown in Table 2.

[0066] Table 2

[0067]

[0068]

[0069] As shown in Table 2, the sterilization rates of bacteria / mold in Examples 1-4 of this invention are all as high as 99.99%, indicating that the gas-liquid two-phase sterilizing cleaning agent prepared by this invention has a good spatial sterilization effect. Some of the raw materials in Reference Example 2 are different from those in Example 1. Like the comparative example, Reference Example 2 cannot come into contact with containers containing bacteria / mold, so it cannot generate sterilizing aerosols and therefore does not have a sterilizing effect.

[0070] The above embodiments are merely illustrative of the principles and effects of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in the present invention should still be covered by the claims of the present invention.

Claims

1. A gas-liquid dual-phase bactericidal cleaning agent for washing machines, characterized in that: It consists of solution A and solution B in a weight ratio of 1:

80. Solution A is made from the following raw materials in parts by weight: 60-99 parts EDI pure water, 5-35 parts quaternary ammonium salt bactericide, 1-5 parts surfactant, 0.2-0.5 parts lactic acid, 0.2-0.5 parts citric acid, 0.2-0.5 parts fragrance, and 0.2-0.5 parts thickener. Solution B is made from the following raw materials in parts by weight: 85-99 parts EDI pure water and 1-15 parts sodium chlorite. The quaternary ammonium salt bactericide is one of benzalkonium chloride, benzalkonium bromide, and disdecyldimethylammonium chloride. The surfactant is an amphoteric surfactant or a nonionic surfactant. The amphoteric surfactant is cocamidopropyl betaine, and the nonionic surfactant is nonylphenol polyoxyethylene ether.

2. The gas-liquid dual-phase bactericidal cleaning agent for washing machines according to claim 1, characterized in that: The flavoring is lemon flavoring.

3. The gas-liquid dual-phase bactericidal cleaning agent for washing machines according to claim 1, characterized in that: The thickener is xanthan gum.

4. A method for preparing a gas-liquid dual-phase bactericidal cleaning agent for washing machines according to any one of claims 1 to 3, characterized in that: Includes the following steps: S1. Weigh the raw materials of liquid A according to the weight parts, put the raw materials of liquid A into the mixing pot, stir at room temperature for 10-20 minutes to obtain a mixture, and then let it stand until the bubbles on the surface of the mixture disappear to obtain liquid A. S2. Weigh the raw materials for liquid B according to the weight proportions, put the raw materials for liquid B into another mixing pot, and stir at room temperature until they are evenly mixed to obtain liquid B.

5. The method for preparing a gas-liquid dual-phase bactericidal cleaning agent for washing machines according to claim 4, characterized in that: In step S1, the stirring speed at room temperature is 500-1000 rpm.

6. The method for preparing a gas-liquid dual-phase bactericidal cleaning agent for washing machines according to claim 4, characterized in that: In step S2, the stirring speed at room temperature is 500-1000 rpm.

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