Washing machine tank cleaning agent and preparation method and application thereof

Abstract

The invention provides a washing machine tank cleaning agent and a preparation method and application thereof. The washing machine tank cleaning agent comprises the following components in percentage by mass: 30-50% of peroxide, 3-10% of inorganic alkali, 15-20% of buffer alkali, 1-5% of lauryl sodium sulfate, 1-5% of protease and the balance of anhydrous sodium sulphate. Wherein the inorganic base is potassium hydroxide and / or sodium hydroxide, the buffer base is sodium carbonate and / or sodium bicarbonate, and the peroxide is sodium percarbonate and / or sodium perborate. According to the washing machine groove cleaning agent, in a specific peroxide system, the specific inorganic base and the specific buffer base are adopted, the synergistic interaction effect is achieved in the aspects of dirt removal, hair dissolution, bacteriostasis and the like, and compared with washing machine groove cleaning agents adopting other inorganic bases or other buffer bases, the washing machine groove cleaning agent has the advantages that the cleaning effect is good; according to the present invention, the effects of dirt removal, hair dissolution and bacteria inhibition are significantly excellent.

Description

Technical Field

[0001] The present invention belongs to the technical field of synthetic detergents, and more specifically, relates to a washing machine tank cleaner and a preparation method and application thereof. Background Art

[0002] As people's living standards continue to improve, washing machines, as the main appliance for washing fabrics, have become quite popular in modern families. However, after a period of use, the fungi and bacteria in the washing machine tank may spread to the environment, causing harm to human health, and a large amount of dirt (such as scale, fungi, bacteria, etc.) and hair will adhere to the inner tank. If these dirt and hair are not cleaned in time, then when the washing machine washes the fabric, these dirt and hair will adhere to the surface of the washed fabric with the water flow, causing secondary pollution of the fabric.

[0003] At present, there are two common ways to clean the washing machine tank. One is to ask professional maintenance workers to disassemble the washing machine tank for cleaning, but this method is costly and troublesome; the other is to use washing machine tank cleaner for cleaning, which is low cost and easy to operate. However, the function of existing washing machine tank cleaners is mainly antibacterial, and it is difficult to effectively remove dirt, especially hair, that is, its cleaning effect on the washing machine tank is still limited.

[0004] Therefore, there is an urgent need to find a washing machine detergent that can both inhibit bacteria and effectively remove hair and dirt. Summary of the invention

[0005] In view of the deficiencies in the prior art, the present invention aims to provide a washing machine tub cleaner that can not only effectively inhibit bacteria but also effectively remove dirt. Even for hair, which is the most difficult to remove, the dissolution rate can reach more than 99%, and it has an excellent cleaning effect.

[0006] A first object of the present invention is to provide a washing machine tub cleaner.

[0007] The second object of the present invention is to provide the use of the above-mentioned washing machine tank cleaner in cleaning the washing machine tank.

[0008] The third object of the present invention is to provide a method for preparing the above-mentioned washing machine tank cleaner.

[0009] A fourth object of the present invention is to provide a method for cleaning a washing machine tub.

[0010] The above-mentioned purpose of the present invention is achieved through the following technical solutions:

[0011] The present invention provides a washing machine tank cleaning agent, comprising the following components in percentage by mass: 30% to 50% peroxide, 3% to 10% inorganic alkali, 15% to 20% buffer alkali, 1% to 5% sodium dodecyl sulfate (K12), 1% to 5% protease, and the balance is sodium sulfate;

[0012] Wherein, the inorganic base is potassium hydroxide and / or sodium hydroxide, the buffer base is sodium carbonate and / or sodium bicarbonate, and the peroxide is sodium percarbonate and / or sodium perborate.

[0013] The washing machine ditch cleaner of the present invention adopts a specific inorganic base and a specific buffer base in a specific peroxide system, which plays a synergistic role in dirt removal, hair dissolution, antibacterial and other aspects. Compared with washing machine ditch cleaners using other inorganic bases or other buffer bases, the dirt removal, hair dissolution and antibacterial effects of the present invention are significantly better.

[0014] Preferably, the following components are contained in mass percentage: 45% to 50% peroxide, 5% to 9% inorganic base, 15% to 20% buffer base, 4% to 5% sodium dodecyl sulfate, 4% to 5% protease, and the balance is sodium sulfate.

[0015] More preferably, the following components are contained in mass percentage: 50% peroxide, 5% inorganic base, 20% buffer base, 5% sodium dodecyl sulfate, 5% protease, and the balance is sodium sulfate.

[0016] Preferably, the peroxide is sodium percarbonate.

[0017] Preferably, the inorganic base is potassium hydroxide.

[0018] Preferably, the buffer base is sodium carbonate.

[0019] Preferably, the protease is an alkaline protease, such as Savinase ultra 16XL, Progress Uno 100L, etc., and most preferably Savinase ultra 16XL.

[0020] The above-mentioned washing machine tank cleaner can not only effectively inhibit bacteria, but also effectively remove dirt, and even for hair, which is the most difficult to remove, it can achieve a dissolution rate of more than 99%, and has an excellent cleaning effect on the washing machine tank. Therefore, the use of the above-mentioned washing machine tank cleaner in cleaning the washing machine tank should be within the protection scope of the present invention.

[0021] The present invention also provides a method for preparing the above-mentioned washing machine tank cleaner, comprising the following steps:

[0022] S1. Mix peroxide, inorganic alkali, buffered alkali and sodium sulfate;

[0023] S2. Add sodium dodecyl sulfate and protease to the mixture in S1 and mix well.

[0024] Based on this, the present invention also provides a method for cleaning a washing machine tank, namely: pouring the washing machine tank cleaner into the washing machine drum and starting the washing machine.

[0025] The present invention has the following beneficial effects:

[0026] 1. The washing machine tank cleaner of the present invention adopts a specific inorganic base and a specific buffer base in a specific peroxide system, which plays a synergistic role in dirt removal, hair dissolution, antibacterial and other aspects. Compared with washing machine tank cleaners using other inorganic bases or other buffer bases, the dirt removal, hair dissolution and antibacterial effects of the present invention are significantly better.

[0027] 2. The washing machine tank cleaner of the present invention has low cost, is easy to use, takes little time, does not require professional personnel, and can be used in large quantities for cleaning private washing machines or public washing machines, thus meeting people's demand for efficient cleaning of common electrical appliances such as washing machines. DETAILED DESCRIPTION

[0028] The present invention is further described below with reference to specific examples, but the examples do not limit the present invention in any form. Unless otherwise specified, the reagents, methods and equipment used in the present invention are conventional reagents, methods and equipment in the art.

[0029] Unless otherwise specified, the reagents and materials used in the following examples are commercially available.

[0030] Example 1 Preparation of a washing machine tank cleaner

[0031] 1. Components of washing machine tank cleaner

[0032] As shown in Table 1, the washing machine tub cleaner of this embodiment comprises the following components in percentage by mass: 50% sodium percarbonate, 5% potassium hydroxide, 20% sodium carbonate, 5% sodium dodecyl sulfate, 5% protease Savinase ultra 16XL, and the balance is sodium sulfate.

[0033] 2. Preparation method of washing machine tank cleaner

[0034] S1. Mix sodium percarbonate, potassium hydroxide, sodium carbonate and sodium sulfate;

[0035] S2. Add sodium dodecyl sulfate and protease Savinase ultra 16XL to the mixture in S1 and mix well.

[0036] Example 2 Preparation of a washing machine tank cleaner

[0037] 1. Components of washing machine tank cleaner

[0038] As shown in Table 1, the washing machine tub cleaner of this embodiment comprises the following components in percentage by mass: 45% sodium percarbonate, 9% potassium hydroxide, 20% sodium carbonate, 5% sodium dodecyl sulfate, 4% protease Savinase ultra 16XL, and the balance is sodium sulfate.

[0039] 2. Preparation method of washing machine tank cleaner

[0040] S1. Mix sodium percarbonate, potassium hydroxide, sodium carbonate and sodium sulfate;

[0041] S2. Add sodium dodecyl sulfate and protease Savinase ultra 16XL to the mixture in S1 and mix well.

[0042] Example 3 Preparation of a washing machine tank cleaner

[0043] 1. Components of washing machine tank cleaner

[0044] As shown in Table 1, the washing machine tub cleaner of this embodiment comprises the following components in percentage by mass: 50% sodium percarbonate, 5% potassium hydroxide, 15% sodium carbonate, 4% sodium dodecyl sulfate, 5% protease Savinase ultra 16XL, and the balance is sodium sulfate.

[0045] 2. Preparation method of washing machine tank cleaner

[0046] S1. Mix sodium percarbonate, potassium hydroxide, sodium carbonate and sodium sulfate;

[0047] S2. Add sodium dodecyl sulfate and protease Savinase ultra 16XL to the mixture in S1 and mix well.

[0048] Example 4 Preparation of a washing machine tank cleaner

[0049] 1. Components of washing machine tank cleaner

[0050] As shown in Table 1, the washing machine tub cleaner of this embodiment comprises the following components in percentage by mass: 30% sodium percarbonate, 10% potassium hydroxide, 20% sodium carbonate, 1% sodium dodecyl sulfate, 1% protease Savinase ultra 16XL, and the balance is sodium sulfate.

[0051] 2. Preparation method of washing machine tank cleaner

[0052] S1. Mix sodium percarbonate, potassium hydroxide, sodium carbonate and sodium sulfate;

[0053] S2. Add sodium dodecyl sulfate and protease Savinase ultra 16XL to the mixture in S1 and mix well.

[0054] Example 5 Preparation of a washing machine tank cleaner

[0055] 1. Components of washing machine tank cleaner

[0056] As shown in Table 1, the washing machine tub cleaner of this embodiment comprises the following components in percentage by mass: 50% sodium percarbonate, 3% potassium hydroxide, 15% sodium carbonate, 5% sodium dodecyl sulfate, 5% protease Savinase ultra 16XL, and the balance is sodium sulfate.

[0057] 2. Preparation method of washing machine tank cleaner

[0058] S1. Mix sodium percarbonate, potassium hydroxide, sodium carbonate and sodium sulfate;

[0059] S2. Add sodium dodecyl sulfate and protease Savinase ultra 16XL to the mixture in S1 and mix well.

[0060] Example 6 Preparation of a washing machine tank cleaner

[0061] 1. Components of washing machine tank cleaner

[0062] As shown in Table 1, the washing machine tub cleaner of this embodiment comprises the following components in percentage by mass: 50% sodium percarbonate, 5% sodium hydroxide, 20% sodium bicarbonate, 5% sodium dodecyl sulfate, 5% protease Progress Uno 100L, and the balance is sodium sulfate.

[0063] 2. Preparation method of washing machine tank cleaner

[0064] S1. Mix sodium percarbonate, sodium hydroxide, sodium bicarbonate and sodium sulfate;

[0065] S2. Add sodium lauryl sulfate and protease Progress Uno 100L to the mixture in S1 and mix well.

[0066] Example 7 Preparation of a washing machine tank cleaner

[0067] 1. Components of washing machine tank cleaner

[0068] As shown in Table 1, the washing machine tub cleaner of this embodiment comprises the following components in percentage by mass: 50% sodium perborate, 5% potassium hydroxide, 20% sodium carbonate, 5% sodium dodecyl sulfate, 5% protease Savinase ultra 16XL, and the balance is sodium sulfate.

[0069] 2. Preparation method of washing machine tank cleaner

[0070] S1. Mix sodium perborate, potassium hydroxide, sodium carbonate and sodium sulfate;

[0071] S2. Add sodium dodecyl sulfate and protease Savinase ultra 16XL to the mixture in S1 and mix well.

[0072] Comparative Example 1 Preparation of a washing machine tank cleaner

[0073] 1. Components of washing machine tank cleaner

[0074] The same as Example 1, except that potassium hydroxide is replaced by monoethanolamine, that is, the washing machine tub cleaner of this comparative example is as shown in Table 1, comprising the following components in mass percentage: sodium percarbonate 50%, monoethanolamine 5%, sodium carbonate 20%, sodium lauryl sulfate 5%, protease Savinase ultra 16XL 5%, and the balance is sodium sulfate.

[0075] 2. Preparation method of washing machine tank cleaner

[0076] S1. Mix sodium percarbonate, monoethanolamine, sodium carbonate and sodium sulfate;

[0077] S2. Add sodium dodecyl sulfate and protease Savinase ultra 16XL to the mixture in S1 and mix well.

[0078] Comparative Example 2 Preparation of a washing machine tank cleaner

[0079] 1. Components of washing machine tank cleaner

[0080] The same as Example 1, except that potassium hydroxide is replaced by triethanolamine, that is, the washing machine tub cleaner of this comparative example is as shown in Table 1, comprising the following components in mass percentage: 50% sodium percarbonate, 5% triethanolamine, 20% sodium carbonate, 5% sodium dodecyl sulfate, 5% protease Savinase ultra 16XL, and the balance is sodium sulfate.

[0081] 2. Preparation method of washing machine tank cleaner

[0082] S1. Mix sodium percarbonate, triethanolamine, sodium carbonate and sodium sulfate;

[0083] S2. Add sodium dodecyl sulfate and protease Savinase ultra 16XL to the mixture in S1 and mix well.

[0084] Comparative Example 3 Preparation of a washing machine tank cleaner

[0085] 1. Components of washing machine tank cleaner

[0086] The same as Example 1, except that sodium carbonate is used to replace dipotassium hydrogen phosphate, that is, the washing machine tub cleaner of this comparative example is as shown in Table 1, comprising the following components in percentage by mass: 50% sodium percarbonate, 5% potassium hydroxide, 20% dipotassium hydrogen phosphate, 5% sodium lauryl sulfate, 5% protease Savinase ultra 16XL, and the balance is sodium sulfate.

[0087] 2. Preparation method of washing machine tank cleaner

[0088] S1. Mix sodium percarbonate, potassium hydroxide, dipotassium hydrogen phosphate and sodium sulfate;

[0089] S2. Add sodium dodecyl sulfate and protease Savinase ultra 16XL to the mixture in S1 and mix well.

[0090] Comparative Example 4 Preparation of a washing machine tank cleaner

[0091] 1. Components of washing machine tank cleaner

[0092] The same as Example 1, except that sodium carbonate is replaced by sodium tripolyphosphate, that is, the washing machine tub cleaner of this comparative example is as shown in Table 1, comprising the following components in percentage by mass: 50% sodium percarbonate, 5% potassium hydroxide, 20% sodium tripolyphosphate, 5% sodium lauryl sulfate, 5% protease Savinase ultra 16XL, and the balance is sodium sulfate.

[0093] 2. Preparation method of washing machine tank cleaner

[0094] S1. Mix sodium percarbonate, potassium hydroxide, sodium tripolyphosphate and sodium sulfate;

[0095] S2. Add sodium dodecyl sulfate and protease Savinase ultra 16XL to the mixture in S1 and mix well.

[0096] Comparative Example 5 Preparation of a washing machine tank cleaner

[0097] 1. Components of washing machine tank cleaner

[0098] The same as Example 1, except that sodium carbonate is replaced by potassium hydroxide, that is, the washing machine tub cleaner of this comparative example is as shown in Table 1, comprising the following components in mass percentage: sodium percarbonate 50%, potassium hydroxide 25%, sodium dodecyl sulfate 5%, protease Savinase ultra 16XL 5%, and the balance is sodium sulfate.

[0099] 2. Preparation method of washing machine tank cleaner

[0100] S1. Mix sodium percarbonate, potassium hydroxide and sodium sulfate;

[0101] S2. Add sodium dodecyl sulfate and protease Savinase ultra 16XL to the mixture in S1 and mix well.

[0102] Comparative Example 6 Preparation of a washing machine tank cleaner

[0103] 1. Components of washing machine tank cleaner

[0104] The same as Example 1, except that potassium hydroxide is replaced by sodium carbonate, that is, the washing machine tub cleaner of this comparative example is as shown in Table 1, comprising the following components in mass percentage: sodium percarbonate 50%, sodium carbonate 25%, sodium dodecyl sulfate 5%, protease Savinase ultra 16XL 5%, and the balance is sodium sulfate.

[0105] 2. Preparation method of washing machine tank cleaner

[0106] S1. Mix sodium percarbonate, sodium carbonate and sodium sulfate;

[0107] S2. Add sodium dodecyl sulfate and protease Savinase ultra 16XL to the mixture in S1 and mix well.

[0108] Comparative Example 7 Preparation of a Washing Machine Tank Cleaner

[0109] 1. Components of washing machine tank cleaner

[0110] The same as Example 1, except that sodium percarbonate is replaced by percarbonate, that is, the washing machine tub cleaner of this comparative example is as shown in Table 1, comprising the following components in percentage by mass: percarbonate 50%, potassium hydroxide 5%, sodium carbonate 20%, sodium lauryl sulfate 5%, protease Savinase ultra 16XL 5%, and the balance is sodium sulfate.

[0111] 2. Preparation method of washing machine tank cleaner

[0112] S1. Mix percarbonate, potassium hydroxide, sodium carbonate and sodium sulfate;

[0113] S2. Add sodium dodecyl sulfate and protease Savinase ultra 16XL to the mixture in S1 and mix well.

[0114] Table 1 Components and dosage of washing machine tank cleaner

[0115]

[0116]

[0117] Test Example 1

[0118] 1. Antibacterial ability test

[0119] 10 g of the washing machine tub cleaners obtained in Examples 1 to 7 and Comparative Examples 1 to 7 were dissolved in 1 L of water, and the antibacterial rates of Staphylococcus aureus ATCC 6538, Escherichia coli ATCC25922, and Candida albicans ATCC 10231 were tested within 20 min according to the method of WS / T650-2019. The results are shown in Table 2.

[0120] Table 2 Antibacterial ability test results

[0121]

[0122] From Table 2, we can see that:

[0123] (1) The antibacterial rates of Examples 1 to 7 all reached above 99.9%, which were significantly better than those of Comparative Examples 1 to 4 and 6 to 7, indicating that the antibacterial ability of the washing machine tank cleaner of the present invention is better.

[0124] (2) The antibacterial rate of Example 1 reached more than 99.95%, while the antibacterial rate of Comparative Examples 1 to 4 and 7 in which the inorganic base, buffer base or peroxide type was replaced could only reach a maximum of 92.80%. That is, the antibacterial ability of the washing machine tub cleaners of Comparative Examples 1 to 4 and 7 was significantly worse than that of Example 1, indicating that in the specific peroxide system of the present invention, specific inorganic bases and specific buffer bases must be used to achieve such excellent antibacterial ability.

[0125] 2. Hair dissolving ability test

[0126] 100 g of the washing machine trough cleaner obtained in Examples 1 to 7 and Comparative Examples 1 to 7 was dissolved in 20 L of water, and 10.0000 g of hair (M0) was added respectively, mixed, and allowed to stand for 30 min, and then the residual hair was filtered out, and the residual hair was dried and weighed (M). The dissolution rate of the washing machine trough cleaner for hair was calculated according to the formula "hair dissolution rate (%) = (M0-M) / M0×100%", and the results are shown in Table 3.

[0127] Table 3 Hair dissolving ability test results

[0128]

[0129] From Table 3, we can see that:

[0130] (1) The hair dissolution rates of Examples 1 to 7 all reached over 96%, which were significantly better than those of Comparative Examples 1 to 7, indicating that the washing machine tank cleaner of the present invention has a better hair dissolution ability.

[0131] (2) The hair dissolution rate of Example 1 reached more than 99%, while the hair dissolution rate of Comparative Examples 1 to 4 and 7, which replaced the inorganic base, buffer base or peroxide, could only reach 89.3% at most. That is, the hair dissolution ability of the washing machine ditch cleaners of Comparative Examples 1 to 4 and 7 was significantly worse than that of Example 1, indicating that in the specific peroxide system of the present invention, specific inorganic bases and specific buffer bases must be used to achieve such excellent hair dissolution ability.

[0132] (3) The hair dissolution rate of Example 1 reached more than 99%, while that of Comparative Examples 5-6, which only added inorganic alkali or only added buffer alkali, could only reach a maximum of 90.5%. That is, the hair dissolution ability of the washing machine ditch cleaners of Comparative Examples 5-6 was significantly worse than that of Example 1, indicating that in the washing machine ditch cleaner of the present invention, the inorganic alkali and the buffer alkali play a synergistic role in dissolving hair.

[0133] 3. Hair decomposition ability test

[0134] Dissolve the tyrosine standard in water to make the concentration of the tyrosine standard 0, 10, 20, 30, 40, 50, 60 μg / mL, then add 5 mL of 0.4 M sodium carbonate solution and 1 mL of Folin reagent, place in a 40°C constant temperature water bath for color development for 10 minutes, and measure the absorbance of the solution at 680 nm. Draw a tyrosine standard curve with the concentration of the tyrosine standard as the horizontal coordinate X and the absorbance as the vertical coordinate Y. The equation is Y=0.011X+0.0095, R 2 =0.9979.

[0135] 2g of the washing machine tank cleaner obtained in Examples 1 to 7 and Comparative Examples 1 to 7 was dissolved in 100mL of water, and 1g of hair was added respectively, and the mixture was soaked at 30°C for 20min, and the filtrate was filtered. 1mL of the filtrate was added to 5mL of 0.4M g sodium carbonate solution and 1mL of Folin reagent, and placed in a 40°C constant temperature water bath for color development for 10min, and the absorbance of the solution was measured at 680nm, and the concentration of tyrosine in the solution was determined according to the tyrosine standard curve. The results are shown in Table 4.

[0136] Table 4 Hair decomposition ability test results

[0137]

[0138] From Table 4, we can see that:

[0139] (1) The tyrosine concentration of the filtrate of Examples 1 to 7 reached 54 μg / mL or more, which was significantly better than that of Comparative Examples 1 to 7, indicating that the washing machine tank cleaner of the present invention has a better hair decomposition ability.

[0140] (2) The tyrosine concentration of the filtrate of Example 1 reached 55.1 μg / mL, while the concentration of tyrosine in Comparative Examples 1 to 4 and 7 in which the inorganic base, buffer base or peroxide type was replaced could only reach a maximum of 37.6 μg / mL. That is, the hair decomposition ability of the washing machine ditch cleaners of Comparative Examples 1 to 4 and 7 was significantly worse than that of Example 1, indicating that in the specific peroxide system of the present invention, specific inorganic bases and specific buffer bases must be used to achieve such excellent hair decomposition ability.

[0141] (3) The tyrosine concentration of the filtrate of Example 1 reached 55.1 μg / mL, while that of Comparative Examples 5-6, in which only inorganic base or only buffer base was added, could only reach a maximum of 38.3%. That is, the hair decomposition ability of the washing machine ditch cleaners of Comparative Examples 5-6 was significantly worse than that of Example 1, indicating that in the washing machine ditch cleaner of the present invention, the inorganic base and the buffer base played a synergistic role in decomposing hair.

[0142] 4. Dirt removal ability test

[0143] According to the method in Appendix A of QB / T 4314, the detergency of the washing machine tub cleaners obtained in Examples 1 to 7 and Comparative Examples 1 to 7 was tested. The results are shown in Table 5.

[0144] Table 5 Detergency test results

[0145]

[0146] From Table 5, we can see that:

[0147] (1) The detergency of Examples 1 to 7 is significantly higher than that of Comparative Examples 1 to 7, indicating that the washing machine tank cleaner of the present invention has better dirt removal ability.

[0148] (2) The detergency of Example 1 reached 96.2%, while the detergency of Comparative Examples 1 to 4 and 7, which replaced the inorganic base, buffer base or peroxide, could only reach 86.9% at most, that is, the detergency of the washing machine tank cleaners of Comparative Examples 1 to 4 and 7 was significantly worse than that of Example 1. This indicates that in the specific peroxide system of the present invention, specific inorganic bases and specific buffer bases must be used to achieve such excellent dirt removal ability.

[0149] (3) The detergency of Example 1 reaches 96.2%, while the detergency of Comparative Examples 5-6, which only add inorganic alkali or only add buffer alkali, can only reach 91.5% at most. That is, the detergency of the washing machine ditch cleaners of Comparative Examples 5-6 is significantly worse than that of Example 1, indicating that in the washing machine ditch cleaner of the present invention, the inorganic alkali and the buffer alkali play a synergistic role in removing dirt.

[0150] 5. On-site test of washing machine tank

[0151] 42 washing machines with similar hair and dirt contamination levels in the washing machine troughs were selected and divided into 14 groups, with 3 washing machines in each group. 300 g of the washing machine trough cleaners obtained in Examples 1 to 7 and Comparative Examples 1 to 7 were dissolved in 60 L of water, and 20 L of water was added to the washing machine drums of different groups, and the standard washing mode of the washing machine was turned on. After washing, the hair and dirt residues in the washing machine troughs were observed, and the results are shown in Table 6.

[0152] Table 6 Field test results

[0153]

[0154] Note: The order from least to most in Table 6 is: none < very little < a little < less < more < more < a lot.

[0155] From Table 6, we can see that:

[0156] (1) The hair and dirt residues in Examples 1 to 7 were significantly less than those in Comparative Examples 1 to 7, indicating that the washing machine tank cleaner of the present invention has better hair dissolving ability and dirt removing ability.

[0157] (2) Example 1 has no hair or dirt residue, while Comparative Examples 1 to 4 and 7 in which the inorganic base, buffer base or peroxide type is replaced have more / more hair or dirt residue, that is, the hair dissolving ability and dirt removing ability of the washing machine tub cleaners of Comparative Examples 1 to 4 and 7 are significantly worse than those of Example 1, indicating that in the specific peroxide system of the present invention, specific inorganic bases and specific buffer bases must be used to achieve such excellent hair dissolving ability and dirt removing ability.

[0158] (3) No hair or dirt remains in Example 1, while hair and dirt remain in Comparative Examples 5 to 6 in which only inorganic alkali or only buffer alkali is added. That is, the hair dissolving ability and dirt removing ability of the washing machine ditch cleaners of Comparative Examples 5 to 6 are significantly worse than those of Example 1, indicating that in the washing machine ditch cleaner of the present invention, the inorganic alkali and the buffer alkali play a synergistic role in dissolving hair and removing dirt.

[0159] The above embodiments are preferred implementation modes of the present invention, but the implementation modes of the present invention are not limited to the above embodiments. Any other changes, modifications, substitutions, combinations, and simplifications that do not deviate from the spirit and principles of the present invention should be equivalent replacement methods and are included in the protection scope of the present invention.

Claims

1. A washing machine tank cleaner, characterized in that: The invention comprises the following components in percentage by mass: 30% to 50% peroxide, 3% to 10% inorganic base, 15% to 20% buffer base, 1% to 5% sodium dodecyl sulfate, 1% to 5% protease, and the balance is sodium sulfate; Wherein, the inorganic base is potassium hydroxide and / or sodium hydroxide, the buffer base is sodium carbonate and / or sodium bicarbonate, and the peroxide is sodium percarbonate and / or sodium perborate.

2. The cleaning agent according to claim 1, characterized in that The invention comprises the following components in percentage by mass: 45% to 50% of peroxide, 5% to 9% of inorganic base, 15% to 20% of buffer base, 4% to 5% of sodium dodecyl sulfate, 4% to 5% of protease, and the balance is sodium sulfate.

3. The cleaning agent according to claim 1, characterized in that: The peroxide is sodium percarbonate.

4. The cleaning agent according to claim 1, characterized in that: The inorganic base is potassium hydroxide.

5. The cleaning agent according to claim 1, characterized in that: The buffer base is sodium carbonate.

6. The cleaning agent according to claim 1, characterized in that: The protease is alkaline protease.

7. The cleaning agent according to claim 6, characterized in that: The alkaline protease is Savinase ultra 16XL and / or Progress Uno 100L.

8. Use of the cleaning agent according to any one of claims 1 to 7 in cleaning a washing machine tank.

9. The method for preparing the cleaning agent according to any one of claims 1 to 7, characterized in that: The steps include: S1. Mix peroxide, inorganic alkali, buffered alkali and sodium sulfate; S2. Add sodium dodecyl sulfate and protease to the mixture in S1 and mix well.

10. A method for cleaning a washing machine tank, characterized in that: Pour the cleaning agent according to any one of claims 1 to 7 into the drum of a washing machine, and start the washing machine.

Images