A cleaning agent for removing starch-based stains, and a preparation method and application thereof

Abstract

The application provides a cleaning agent for removing starch dirt and a preparation method and application thereof, and the cleaning agent for removing starch dirt comprises the following components in percentage by weight: 0.5-3% of penetrating agent, 3-10% of stripping agent, 0.1-1% of amylase, 20-70% of swelling inhibitor, 0.1-3% of chelating agent, 0.5-3% of corrosion inhibitor, and the balance of water. The cleaning agent for removing starch dirt provided by the application can quickly and effectively remove stubborn starch dirt accumulated on fins and filter screens for a long time through the screening and synergistic compounding of the components, especially the introduction of the swelling inhibitor, the amylase and the stripping agent, and has no corrosion on the fins and the filter screens.

Description

Technical Field

[0001] This invention belongs to the field of cleaning agent materials technology, and relates to a cleaning agent for removing starch-based dirt, its preparation method and application. Background Technology

[0002] Starch-based dust generated during food processing easily adheres to the fins and filters of air conditioners. Due to the location of these components and the cumbersome disassembly process, timely cleaning is inconvenient, leading to a long-term accumulation and thickening of the starch-based dust, sometimes even clogging the gaps between the fins and filters, significantly increasing the difficulty of cleaning. This is because starch-based substances easily swell (increasing in volume by tens of times or even more) and gelatinize when exposed to water (especially under alkaline conditions). The swollen starch gelatin covers the surface of the dirt, clogging the tiny pores between the dirt and preventing the cleaning solution (aqueous phase) from penetrating into the starch or the interface between the starch and the fins / filters. Internal dirt is difficult to dissolve or remove, greatly reducing cleaning efficiency. Furthermore, most air conditioner fins are made of aluminum or aluminum alloy, and filters may also be made of metal; some strong acid or alkali cleaning agents can corrode metal.

[0003] Currently, cleaning agents are categorized into acidic, neutral, and alkaline types based on their pH value. Acidic cleaning agents are primarily used to remove mineral-based inorganic dirt, but they can significantly corrode most metal fins and filter screens. Neutral cleaning agents are used to remove various types of dirt; while they have almost no corrosive effect on metals, their cleaning ability is relatively poor, making them suitable for cleaning lightly soiled surfaces. Alkaline cleaning agents are mainly used to remove oil stains and protein deposits, but they can also corrode non-ferrous metals. When these cleaning agents are used to clean starch-based dirt, the working solution, being almost entirely water, will cause the starch to rapidly swell and gelatinize within a very short time (this gelatinization is even more pronounced in alkaline cleaning solutions). This prevents the cleaning agent from penetrating into the dirt and between the dirt and the fins / filter screen interface, thus resulting in poor cleaning effectiveness for starch-based dirt.

[0004] Therefore, it is desirable in this field to develop a cleaning agent that can quickly and effectively remove stubborn starchy dirt that has accumulated over a long period of time on fins and filter screens, with minimal corrosion to the fins and filter screens. Summary of the Invention

[0005] In view of the shortcomings of the existing technology, the purpose of this invention is to provide a cleaning agent for removing starch-based dirt, its preparation method and application, which is suitable for cleaning filters and heat exchange fins in starch-related processing equipment or places.

[0006] To achieve this objective, the present invention adopts the following technical solution: In a first aspect, the present invention provides a cleaning agent for removing starch-based stains, wherein the cleaning agent for removing starch-based stains comprises, by weight percentage, the following components: Penetrant 0.5%–3%; 3%–10% stripping agent; Amylase 0.1%–1%; Swelling inhibitors: 20%–70%; Chelating agent 0.1%–3%; Corrosion inhibitor 0.5%–3%; Water balance.

[0007] The cleaning agent for removing starchy dirt provided by this invention, through the screening and synergistic compounding of its components, especially the introduction of swelling inhibitors, amylases and stripping agents, enables the cleaning agent to quickly and effectively remove stubborn starchy dirt that has accumulated on fins and filter screens over a long period of time, and has virtually no corrosive effect on fins and filter screens.

[0008] In this invention, the amount of penetrant used in the cleaning agent for removing starchy dirt can be 0.5%, 0.6%, 0.8%, 1%, 1.2%, 1.3%, 1.5%, 1.8%, 2%, 2.2%, 2.3%, 2.5%, 2.8%, 3%, etc., by weight percentage.

[0009] In this invention, the amount of the stripping agent used in the cleaning agent for removing starchy dirt can be 3%, 4%, 5%, 6%, 7%, 8%, 9%, 10%, etc., by weight percentage.

[0010] In this invention, the amount of amylase used in the cleaning agent for removing starchy dirt can be 0.1%, 0.2%, 0.3%, 0.4%, 0.5%, 0.6%, 0.7%, 0.8%, 0.9%, 1%, etc., by weight percentage.

[0011] In this invention, the amount of swelling inhibitor used in the cleaning agent for removing starchy dirt, by weight percentage, can be 20%, 22%, 24%, 25%, 26%, 28%, 30%, 32%, 34%, 35%, 36%, 38%, 40%, 42%, 44%, 45%, 46%, 48%, 50%, 52%, 54%, 55%, 56%, 58%, 60%, 62%, 64%, 65%, 66%, 68%, 70%, etc.

[0012] In this invention, the amount of chelating agent used in the cleaning agent for removing starchy dirt can be 0.1%, 0.2%, 0.3%, 0.5%, 0.6%, 0.8%, 1%, 1.2%, 1.3%, 1.5%, 1.8%, 2%, 2.2%, 2.3%, 2.5%, 2.8%, 3%, etc., by weight percentage.

[0013] In this invention, the amount of corrosion inhibitor used in the cleaning agent for removing starchy dirt can be 0.5%, 0.6%, 0.8%, 1%, 1.2%, 1.3%, 1.5%, 1.8%, 2%, 2.2%, 2.3%, 2.5%, 2.8%, 3%, etc., by weight percentage.

[0014] In this invention, the cleaning agent for removing starchy dirt is used with water as the remainder by weight percentage.

[0015] Preferably, the penetrant comprises any one or a combination of at least two of various low-surface-tension, high-permeability anionic surfactants, nonionic surfactants, and amphoteric surfactants. The penetrant allows the cleaning agent to penetrate into the dirt and the interface between the dirt and the fins / filter screen, loosening the dirt and making it easier to quickly peel off from the fins / filter screen.

[0016] Preferably, the penetrant includes, but is not limited to, any one or a combination of at least two of the following: C6-16 fatty alcohol polyoxyethylene (EO=3-10) ether, EO-PO block polyether, fatty alcohol block (EO-PO) polyether, sodium alkyl sulfonate, sodium alkylbenzene sulfonate (e.g., sodium dodecylbenzene sulfonate), sodium alkyl sulfate, sodium α-alkenyl sulfonate, sodium alkylnaphthalene sulfonate, sodium alkyl succinate sulfonate, sodium aminosulfonate, dodecyl dimethyl betaine, cocamidopropyl betaine, lauramide propyl betaine, cocoyl hydroxyethyl imidazoline betaine, N-lauroyl sarcosinate sodium, sodium cocoyl glutamate, and dodecyl dimethyl sulfobetaine.

[0017] Preferably, the stripping agent is a Gemini cationic surfactant.

[0018] Preferably, the stripping agent is a quaternary ammonium salt type gemini surfactant, including but not limited to any one or a combination of at least two of ester bond quaternary ammonium salt type gemini surfactant, carbon bond quaternary ammonium salt type gemini surfactant, hydroxyl quaternary ammonium salt type gemini surfactant, and heterocyclic quaternary ammonium salt type gemini surfactant. Product models include 31762, 31787, 31786, and DC-868 produced by Henan Daochun Chemical Technology Co., Ltd.

[0019] The stripping agent in this invention is a Gimini cationic surfactant. Gimini surfactants chemically bond two "amphiphilic monomers" together through a linking group located near the hydrophilic head group or directly at the two hydrophilic head groups. The linking group forces the two hydrophobic chains to tend to approach each other in parallel, while limiting the separation distance between the two hydrophilic head groups. This makes it easier for the hydrophobic chains to arrange themselves in a relatively upright state at the gas / liquid or liquid / liquid interface; the terminal methyl groups (-CH3) with lower surface energy are mainly exposed to air, rather than a large number of methylene groups (-CH2-). This tight, ordered arrangement is the structural basis for its excellent properties such as ultra-high surface activity and extremely low critical micelle concentration. Therefore, compared with traditional cationic surfactants, quaternary ammonium salt Gimini surfactants have a lower critical micelle concentration, better water solubility, higher interfacial activity, and superior wetting and emulsifying properties. Furthermore, they can be compounded with anionic surfactants. Therefore, in this invention, a Gemini cationic surfactant with better surface activity is used as a stripping agent, which, with the synergistic effect of the penetrant, can quickly remove starch dirt from the fins and filter screen.

[0020] Preferably, the amylase comprises any one or a combination of at least two of RumamyR (Novo Nordisk), Rumamy1R (Novo Nordisk), A05811G190 amylase (Genencor), GDG-2011 (Ningxia Xiasheng Industrial Co., Ltd.), ZH-20 (Kangdian Biotechnology Co., Ltd.), and KW-50 (Kangdian Biotechnology Co., Ltd.). The amylase can promote the hydrolysis of starch dirt into soluble dextrin or maltose, synergistically enhancing the stripping effect of the stripping agent to remove starch dirt more quickly.

[0021] Preferably, the swelling inhibitor is a polyol, including any one or a combination of at least two of ethylene glycol (EG), 1,2-propanediol (1,2-PG), 1,3-propanediol (1,3-PG), 1,4-butanediol (BDO), 2,3-butanediol (BDO), polyethylene glycol (e.g., PEG-200, PEG-400, etc.), polypropylene glycol (PPG-200), sorbitol, xylitol, glycerol, and trimethylolethane. The swelling inhibitor in this invention can inhibit the swelling and gelatinization of starch upon contact with water or alkali during the cleaning process, thus preserving the pores between starch-based dirt and allowing the cleaning agent to penetrate into the interior of the dirt and the interface between the dirt and the fins, thereby quickly removing the dirt. The concentration of the swelling inhibitor in the working fluid of this invention should not be less than 20%.

[0022] Preferably, the chelating agent comprises any one or a combination of at least two of the following: ethylenediaminetetraacetic acid (EDTA), sodium ethylenediaminetetraacetic acid (e.g., tetrasodium ethylenediaminetetraacetic acid), nitric acid triacetic acid (NTA), sodium nitric acid triacetic acid, sodium citrate, ammonium citrate, diethylenetriaminepentaacetic acid (DTPA), sodium diethylenetriaminepentaacetic acid, hydroxyethylethylenediaminetriacetic acid (HEDTA), sodium hydroxyethylethylenediaminetriacetic acid, propylenediaminetetraacetic acid (PDTA), sodium propylenediaminetetraacetic acid, diethanolamide digluconate (EDG), sodium diethanolamide digluconate, aminotrimethylenephosphonic acid (ATMP), sodium aminotrimethylenephosphonate, hydroxyethylidene diphosphonic acid (HEDP), sodium hydroxyethylidene diphosphonate, ethylenediaminetetramethylenephosphonic acid (EDTMP), and sodium ethylenediaminetetramethylenephosphonate. The chelating agent can chelate metal ions such as calcium and magnesium in water, improve the activity of surfactants, and accelerate the removal of dirt.

[0023] Preferably, the corrosion inhibitor comprises any one or a combination of at least two of sodium metasilicate (e.g., sodium metasilicate pentahydrate), potassium metasilicate, sodium silicate, potassium silicate, sodium phosphate, potassium phosphate, disodium hydrogen phosphate, dipotassium hydrogen phosphate, sodium molybdate, sodium nitrite, benzotriazole, methylbenzotriazole, thiourea, and their derivatives. The corrosion inhibitor can suppress the corrosion of metals by the cleaning agent.

[0024] In a second aspect, the present invention provides a method for preparing a cleaning agent for removing starchy dirt as described in the first aspect, the method comprising the following steps: The penetrant, stripper, amylase, swelling inhibitor, chelating agent, corrosion inhibitor, and water are mixed in the specified amounts to obtain the cleaning agent for removing starch-based dirt.

[0025] Preferably, the preparation method includes the following steps: First, add water to the container, and then add the other components to obtain the cleaning agent for removing starchy dirt.

[0026] Thirdly, the present invention provides the application of a cleaning agent for removing starchy dirt as described in the first aspect in cleaning starchy dirt on fins or filter screens.

[0027] Compared with the prior art, the present invention has the following beneficial effects: The cleaning agent for removing starch-based contaminants provided by this invention, through the screening and synergistic compounding of its components, especially the introduction of swelling inhibitors, amylases, and stripping agents, enables the cleaning agent to quickly and effectively remove stubborn starch-based contaminants that have accumulated over a long period of time on fins and filter screens (detergency: 92.9%-98.6%), with virtually no corrosion to the fins and filter screens. Specifically, the swelling inhibitor allows the cleaning agent to penetrate more quickly into the interior of the starch-based contaminants and into the interface between the contaminants and the fins and filter screens; the amylase promotes the hydrolysis of starch-based contaminants into soluble dextrin or maltose, synergizing with the stripping action of the stripping agent to remove starch-based contaminants more quickly; and the use of Gimini cationic surfactants as stripping agents can quickly peel the contaminants off the surface of the fins and filter screens, with other contaminants mixed with starch-based contaminants also falling off along with the starch-based contaminants, achieving the purpose of thoroughly cleaning the fins and filter screens.

[0028] The cleaning agent provided by this invention primarily removes dirt through decomposition and stripping, rather than dissolving or emulsifying. Therefore, it is more efficient and requires less material to achieve the desired cleaning effect. The surfactant's activity does not rapidly weaken during solubilization, dispersion, or emulsification. Enzymes, with their strong catalytic activity, significantly lower the activation energy of chemical reactions, greatly increasing the rate of decomposition. They are not consumed during the reaction, and their activity does not decrease. The cleaning agent also contains corrosion inhibitors, ensuring minimal corrosion to the metal of the fins and filter screens during the cleaning process. Attached Figure Description

[0029] Figure 1A This is a photograph of the fins with starchy dirt deposited in Example 1 before cleaning.

[0030] Figure 1B This is a photograph of the fins after cleaning, showing the deposited starch-based dirt in Example 1.

[0031] Figure 2A This is a photograph of the filter screen with starchy dirt deposited on it before cleaning, as shown in Example 2.

[0032] Figure 2B This is a photograph of the filter screen after cleaning, which had been deposited with starchy dirt, as shown in Example 2.

[0033] Figure 3A This is a photograph of the fins with starch-based dirt deposited in Example 3 before cleaning.

[0034] Figure 3B This is a photograph of the fins after cleaning, showing the deposited starch-based dirt in Example 3.

[0035] Figure 4The images show the swelling of corn starch after it was added to the cleaning agents provided in Example 3 and Comparative Example 1 and left to stand for 1 hour. The left side shows the swelling of the starch in Example 3, and the right side shows the swelling of the starch in Comparative Example 1. Detailed Implementation

[0036] The technical solution of the present invention will be further illustrated below through specific embodiments. Those skilled in the art should understand that the embodiments described are merely illustrative of the present invention and should not be construed as limiting the invention in any way.

[0037] Unless otherwise specified, the following raw material information for the embodiments and comparative examples of this invention is as follows: Example 1 This embodiment provides a cleaning agent for removing starch-based stains, which comprises the following components by weight percentage: Sodium diethylenetriaminepentaacetate 1.5%; Sodium metasilicate pentahydrate 1.5%; LF221 (fatty alcohol polyoxyethylene ether, BASF) 2.5%; Rumamy1R 0.6%, 31787 8%, Glycerol 40%; 1,4-Butanediol 30%; Water 15.9%.

[0038] The preparation method includes the following steps: First, add water to the mixing vessel, then add the remaining components in sequence. Before adding each component, ensure that the previous components have completely dissolved. Stir until the mixture is homogeneous to obtain the cleaning agent for removing starchy dirt.

[0039] Dilute the above cleaning agent with tap water to prepare a working solution, wherein the mass ratio of cleaning agent to tap water is 3:7. Spray the working solution onto the fins with starchy dirt deposited using a pressure sprayer. After the fins are completely wetted, let it stand for 5 minutes, and then spray the working solution onto the fins again. At this time, a large amount of dirt can be observed to fall off. After standing for another 5 minutes, rinse the fins with tap water until all the dirt is removed.

[0040] In this embodiment, a photograph of the fins before cleaning, showing the deposited starch-based dirt, is shown below. Figure 1A As shown in the image, the fins with starch-like deposits after cleaning are a real-world example. Figure 1B As shown.

[0041] Example 2 This embodiment provides a cleaning agent for removing starch-based stains, which comprises the following components by weight percentage: 3% sodium diethanolamide; Dipotassium hydrogen phosphate 3%; Sodium dodecylbenzenesulfonate 3%; DC-868 10%; A05811G190 type amylase 1%; 1,3-Propanediol 50%; Sorbitol 10%; Water 20.0%.

[0042] The preparation method includes the following steps: First, add water to the mixing vessel, then add the remaining components in sequence. Before adding each component, ensure that the previous components have completely dissolved. Stir until the mixture is homogeneous to obtain the cleaning agent for removing starchy dirt.

[0043] Dilute the above cleaning agent with tap water to prepare a working solution, wherein the mass ratio of cleaning agent to tap water is 1:1. Spray the working solution onto the filter screen with starchy dirt deposited using a pressure sprayer. After the filter screen is completely wetted, let it stand for 10 minutes, and then spray the working solution onto the filter screen again. At this time, a large amount of dirt can be observed to fall off. After standing for another 15 minutes, rinse the filter screen with tap water until all the dirt is removed.

[0044] In this embodiment, a photograph of the filter screen with starch-based dirt deposited before cleaning is shown below. Figure 2A As shown in the image, the filter screen with starchy dirt deposited on it has been cleaned. Figure 2B As shown.

[0045] Example 3 This embodiment provides a cleaning agent for removing starch-based stains, which comprises the following components by weight percentage: Cocamidopropyl betaine 0.3%; C12-14 fatty alcohol polyoxyethylene (5EO) ether 0.2%; 31786 1%; DC-868 2%; ZH-20 0.1%; 30% ethylene glycol; Tetrasodium ethylenediaminetetraacetate 0.5%; Sodium molybdate 0.5%; Water 65.4%.

[0046] The preparation method includes the following steps: First, add water to the mixing vessel, then add the remaining components in sequence. Before adding each component, ensure that the previous components have completely dissolved. Stir until the mixture is homogeneous to obtain the cleaning agent for removing starchy dirt.

[0047] Using the above-mentioned cleaning agent stock solution as the working solution, spray the working solution onto the fins with starch-based dirt deposited using a pressure sprayer. After the fins are completely wetted, let them stand for 10 minutes, and then spray the working solution onto the fins again. At this time, a large amount of dirt can be observed to fall off. After standing for another 10 minutes, rinse the fins with tap water until all the dirt is removed.

[0048] In this embodiment, a photograph of the fins before cleaning, showing the deposited starch-based dirt, is shown below. Figure 3A As shown in the image, the fins with starch-like deposits after cleaning are a real-world example. Figure 3B As shown.

[0049] Example 4 This embodiment provides a cleaning agent for removing starch-based stains, which comprises the following components by weight percentage: Sodium diethylenetriaminepentaacetate 1.5%; Sodium metasilicate pentahydrate 1.5%; LF221 (fatty alcohol polyoxyethylene ether, BASF) 2.5%; Rumamy1R 0.6%, C12 ether-bonded gemini ammonium chloride 8%, Glycerol 40%; 1,4-Butanediol 30%; Water 15.9%.

[0050] That is, the difference between this embodiment and Example 1 is that the stripping agent (31787) is replaced with an equal weight percentage of C12 ether-bonded gemini ammonium chloride.

[0051] The preparation method is the same as in Example 1.

[0052] The cleaning agent was diluted with tap water to prepare a working solution, wherein the mass ratio of the cleaning agent to the tap water was 3:7.

[0053] Comparative Example 1 This comparative example provides a cleaning agent for removing starch-based stains, which comprises, by weight percentage, the following components: Cocamidopropyl betaine 0.3%; C12-14 fatty alcohol polyoxyethylene (5EO) ether 0.2%; 31786 1%; DC-868 2%; ZH-20 0.1%; Tetrasodium ethylenediaminetetraacetate 0.5%; Sodium molybdate 0.5%; Water content: 95.4%.

[0054] Compared to Example 3, this comparative example did not contain any swelling inhibitors.

[0055] The preparation method is the same as in Example 3, and the working solution is the above-mentioned cleaning agent stock solution.

[0056] 10g of corn starch was added to 100g of the cleaning agent provided in Example 3 and Comparative Example 1, respectively. The mixture was stirred and stirred until homogeneous. After standing for 1 hour, the swelling of the starch was observed. The results are as follows: Figure 4 As shown, the left side shows the swelling of Example 3, and the right side shows the swelling of Comparative Example 1. It can be seen that the starch without added swelling inhibitor swelled and increased in volume to a paste-like state.

[0057] Comparative Example 2 This comparative example provides a cleaning agent for removing starch-based stains, which comprises, by weight percentage, the following components: Cocamidopropyl betaine 0.3%; C12-14 fatty alcohol polyoxyethylene (5EO) ether 0.2%; 31786 1%; DC-868 2%; 30% ethylene glycol; Tetrasodium ethylenediaminetetraacetate 0.5%; Sodium molybdate 0.5%; Water 65.5%.

[0058] Compared to Example 3, no amylase was added in this comparative example.

[0059] The preparation method is the same as in Example 3, and the working solution is the above-mentioned cleaning agent stock solution.

[0060] Comparative Example 3 This comparative example provides a cleaning agent for removing starch-based stains, which comprises, by weight percentage, the following components: Cocamidopropyl betaine 0.3%; C12-14 fatty alcohol polyoxyethylene (5EO) ether 0.2%; ZH-20 0.1%; 30% ethylene glycol; Tetrasodium ethylenediaminetetraacetate 0.5%; Sodium molybdate 0.5%; Water 68.4%.

[0061] Compared to Example 3, no stripping agent was added in this comparative example.

[0062] The preparation method is the same as in Example 3, and the working solution is the above-mentioned cleaning agent stock solution.

[0063] The working fluids provided in the embodiments and comparative examples of the present invention were subjected to performance tests, and the test methods are as follows: Detergency test (1) Test preparation Prepare a volume of 1m 3 A cubic, sealed test chamber, made of glass, was used. One liter of saturated ammonium sulfate solution and a hygrometer were placed inside. The room temperature was controlled at 25±1℃, and the humidity was adjusted to 80±2%RH. A smaller sealed chamber (30cm×30cm×30cm) made of glass was then placed inside the first sealed chamber. A stainless steel filter screen (15cm×15cm, 300 mesh) was placed inside the first sealed chamber. After 3 hours of adjustment, the filter screen was removed and weighed on an analytical balance (accurate to 0.0001g, the same applies below), recorded as W0. Approximately 30g of the weighed filter screen was then... ° Place the filter screen against the wall of a small, sealed chamber. Put 50g of starch inside the chamber, and place a small fan inside. The fan's airflow will continuously blow the starch into the small, sealed chamber. Close the doors of both the large and small sealed chambers, turn on the fan, and after half an hour, turn off the fan, remove the filter screen, weigh it, and record the weight as W1. Let the starch-covered filter screen age in the air for 30 days (try to avoid dust falling onto the filter screen; you can place it in a cardboard box and cover the box).

[0064] (2) Test method Pour 100mL of the prepared working solution into a spray bottle (use the same type of nozzle for the same batch of comparative tests). Add the aged filter screen (30...) ° Lean the filter screen at an angle, with the nozzle of the spray bottle approximately 15cm away. Spray the working solution perpendicularly to the filter screen from left to right, ensuring the entire screen is thoroughly wetted. After standing for 15 minutes, pour another 200mL of working solution into the spray bottle and continue spraying the solution onto the upper part of the filter screen (covering approximately 1 / 3 of the top surface). This allows the starch residue at the bottom to be dislodged as the working solution flows over it. After spraying, let it stand for 15 minutes. Finally, fill a clean spray bottle with 300mL of tap water and spray the water onto the filter screen to rinse away the working solution and loose residue. Place the filter screen in a 60℃ oven for 3 hours to dry. After cooling to room temperature, place it in a sealed chamber with a humidity of 80±2%RH for 3 hours. Remove the filter screen, weigh it, and record the weight as W2.

[0065] (3) Calculation formula .

[0066] The performance test results are shown in Table 1.

[0067] Table 1 As can be seen from Table 1, the working solution prepared using the cleaning agent provided in Examples 1-3 of this invention or the original cleaning agent provided by this invention both have high detergency (92.9%-98.6%).

[0068] Compared with Example 1, the stripping agent used in Example 4 is not within the scope of the present invention, and the detergency of the cleaning agent is worse.

[0069] Compared with Example 3, the detergency of the cleaning agent provided in Comparative Example 1 decreased significantly, and the detergency of the cleaning agents provided in Comparative Example 2 and Comparative Example 3 also decreased significantly.

[0070] The applicant declares that this invention illustrates the cleaning agent for removing starch-based stains, its preparation method, and its application through the above embodiments. However, this invention is not limited to the above embodiments, meaning that this invention does not necessarily rely on the above embodiments for implementation. Those skilled in the art should understand that any improvements to this invention, equivalent substitutions of the raw materials used, additions of auxiliary components, and selection of specific methods all fall within the protection and disclosure scope of this invention.

Claims

1. A cleaning agent for removing starch-based dirt, characterized in that, The cleaning agent for removing starchy dirt comprises the following components by weight percentage: Penetrant 0.5%–3%; 3%–10% stripping agent; Amylase 0.1%–1%; Swelling inhibitors: 20%–70%; Chelating agent 0.1%–3%; Corrosion inhibitor 0.5%–3%; Water balance.

2. The cleaning agent for removing starchy dirt according to claim 1, characterized in that, The penetrant includes any one or a combination of at least two of anionic surfactants, nonionic surfactants, and amphoteric surfactants. Preferably, the penetrant comprises any one or a combination of at least two of the following: C6-16 fatty alcohol polyoxyethylene ether, EO-PO block polyether, fatty alcohol block polyether, sodium alkyl sulfonate, sodium alkylbenzene sulfonate, sodium alkyl sulfate, sodium α-alkenyl sulfonate, sodium alkylnaphthalene sulfonate, sodium alkyl succinate sulfonate, sodium aminosulfonate, dodecyl dimethyl betaine, cocamidopropyl betaine, lauramide propyl betaine, cocoyl hydroxyethyl imidazoline betaine, N-lauroyl sarcosinate sodium, sodium cocoyl glutamate, and dodecyl dimethyl sulfobetaine.

3. The cleaning agent for removing starchy dirt according to claim 1 or 2, characterized in that, The stripping agent is a gemini cationic surfactant; Preferably, the stripping agent is a quaternary ammonium salt type gemini surfactant, including any one or a combination of at least two of ester bond quaternary ammonium salt type gemini surfactants, carbon bond quaternary ammonium salt type gemini surfactants, hydroxyl quaternary ammonium salt type gemini surfactants, and heterocyclic quaternary ammonium salt type gemini surfactants.

4. The cleaning agent for removing starchy dirt according to any one of claims 1-3, characterized in that, The amylase includes any one or a combination of at least two of RumamyR, Rumamy1R, A05811G190 type amylase, GDG-2011, ZH-20, and KW-50.

5. The cleaning agent for removing starchy dirt according to any one of claims 1-4, characterized in that, The swelling inhibitor is a polyol, including any one or a combination of at least two of the following: ethylene glycol, 1,2-propanediol, 1,3-propanediol, 1,4-butanediol, 2,3-butanediol, polyethylene glycol, polypropylene glycol, sorbitol, xylitol, glycerol, and trimethylolethane.

6. The cleaning agent for removing starchy dirt according to any one of claims 1-5, characterized in that, The chelating agent includes any one or a combination of at least two of the following: ethylenediaminetetraacetic acid (EDTA), sodium EDTA, nitrilotriacetic acid, sodium nitrilotriacetic acid, sodium citrate, ammonium citrate, diethylenetriaminepentaacetic acid (DTA), sodium diethylenetriaminepentaacetic acid (DTA), hydroxyethyl EDTA, sodium hydroxyethyl EDTA, propylenediaminetetraacetic acid (PDTA), sodium propylenediaminetetraacetic acid (PDTA), diglucosinolate, sodium diglucosinolate, aminotrimethylenephosphonic acid, sodium aminotrimethylenephosphonate, hydroxyethylidene diphosphonic acid, sodium hydroxyethylidene diphosphonate, EDTA, and sodium EDTA.

7. The cleaning agent for removing starchy dirt according to any one of claims 1-6, characterized in that, The corrosion inhibitor includes any one or a combination of at least two of the following: sodium metasilicate, potassium metasilicate, sodium silicate, potassium silicate, sodium phosphate, potassium phosphate, disodium hydrogen phosphate, dipotassium hydrogen phosphate, sodium molybdate, sodium nitrite, benzotriazole, methylbenzotriazole, thiourea and its derivatives.

8. A method for preparing a cleaning agent for removing starchy dirt as described in any one of claims 1-7, characterized in that, The preparation method includes the following steps: The penetrant, stripper, amylase, swelling inhibitor, chelating agent, corrosion inhibitor, and water are mixed in the specified amounts to obtain the cleaning agent for removing starch-based dirt.

9. The preparation method according to claim 8, characterized in that, The preparation method includes the following steps: First, add water to the container, and then add the other components to obtain the cleaning agent for removing starchy dirt.

10. The use of a cleaning agent for removing starchy dirt as described in any one of claims 1-7 in cleaning starchy dirt on fins or filter screens.

Images