Anti-freezing kitchen heavy oil cleaning agent and preparation method thereof
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- 广东自由能科技股份有限公司
- Filing Date
- 2026-06-09
- Publication Date
- 2026-08-07
AI Technical Summary
目前，大多数市售产品在常温条件下都具备较好的去污能力，但在低温环境中仍普遍存在适配性差、部分性能不足等问题，难以满足如北方冬季等低温环境下的实际使用需求
1、通过利用N-甲基吡咯烷酮与异丙醇复配作为防冻溶剂，能有效降低清洗剂的凝固点，使清洗剂能在-20℃低温环境下仍保持均一稳定、不结冰、不分层，从而有效解决了现有清洗剂低温稳定性差、喷雾不良的问题。
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Figure CN122521399A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the technical field of cleaning agents, and in particular to an antifreeze kitchen heavy oil stain cleaner and its preparation method. Background Technology
[0002] Heavy-duty oil stain cleaners are mainly used for emulsifying and cleaning stubborn grease, burnt residue, and food stains that have accumulated over time on surfaces such as stoves, range hoods, and ovens. They are widely in demand in households, the catering industry, and the food processing industry. Currently, most commercially available products have good cleaning power under normal temperature conditions, but they generally suffer from poor adaptability and insufficient performance in low-temperature environments, making it difficult to meet the actual usage needs in low-temperature environments such as northern winters.
[0003] Most cleaning agents exhibit insufficient low-temperature performance, showing phenomena such as increased viscosity, stratification, crystallization, and even solidification below 0°C. Furthermore, aerosol or pump-spray type cleaning agents may experience valve freezing and poor atomization, rendering them virtually unusable at low temperatures. Additionally, the solubility of some surfactants in cleaning agents decreases at low temperatures, reducing their micelle-forming ability. Combined with slower solvent evaporation and decreased penetration of active substances, the cleaning agent's detergency and cleaning capabilities at low temperatures are significantly lower than at room temperature.
[0004] To improve the low-temperature performance of cleaning agents, most existing technologies add organic antifreeze agents such as ethylene glycol and propylene glycol to the formulation. However, these antifreeze agents generally have a certain degree of toxicity or irritating odor, and are not entirely suitable for environments with high safety requirements, such as kitchens. Secondly, some manufacturers reduce the amount of antifreeze to cut costs, resulting in ineffective antifreeze. Further increasing the antifreeze content to ensure the antifreeze effect not only increases costs but also severely weakens the cleaning agent's detergency, making it difficult to achieve a balance between antifreeze and detergency.
[0005] It is evident that existing aerosol-type heavy-duty oil stain cleaners generally suffer from poor stability, insufficient detergency, significant side effects from antifreeze measures, poor spray performance, and difficulty in balancing cost and performance in low-temperature applications. Therefore, developing an antifreeze heavy-duty oil stain cleaner that can maintain uniform stability over long periods in low-temperature environments, possesses highly efficient detergency, is safe and convenient to use, and is cost-effective is of significant practical importance for promoting the development of heavy-duty oil stain cleaners for kitchens. Summary of the Invention
[0006] In order to improve the antifreeze performance of aerosol-type heavy oil stain cleaner while ensuring its good degreasing and cleaning ability, and to further improve the low-temperature stability and low-temperature performance of the cleaner, and to solve the problems existing in the prior art, this invention provides an antifreeze kitchen heavy oil stain cleaner and its preparation method.
[0007] Firstly, the antifreeze kitchen heavy oil stain cleaner provided in this application adopts the following technical solution: An antifreeze kitchen heavy-duty grease cleaner, comprising the following raw materials by weight percentage based on the total mass of the cleaner: The composition includes: 6-10% compound surfactant; 20-30% antifreeze solvent; 0.2-0.25% preservative; 0.2-0.3% sodium hydroxide; 2-3% triethanolamine; 0.3-0.6% fragrance; and the balance being water. The composite surfactant includes a combination of various types of surfactants such as fatty alcohol polyoxyethylene ethers, alkanolamide surfactants, branched isomeric alcohol ether surfactants, alkyl glycosides, and alkyl amine oxide surfactants, and the antifreeze solvent includes at least N-methylpyrrolidone and isopropanol.
[0008] By adopting the above technical solution, using N-methylpyrrolidone and isopropanol as an antifreeze solvent, the freezing point of the cleaning agent can be effectively reduced, allowing it to remain uniform and stable at -20℃, without freezing or stratification. This effectively solves the problems of poor low-temperature stability and poor spraying of existing cleaning agents. Moreover, the compounding of a specific range of surfactants ensures the cleaning agent's efficient emulsification and removal of stubborn heavy oil stains in the kitchen. This helps the cleaning agent to have both excellent and stable antifreeze properties and low-temperature cleaning effect, and improves the low-temperature stability and low-temperature performance of the cleaning agent when used as an aerosol.
[0009] Optionally, the composite surfactant comprises a composition of fatty alcohol polyoxyethylene ether and alkanolamide surfactant, and the content of the fatty alcohol polyoxyethylene ether does not exceed 5% of the total mass of the cleaning agent.
[0010] Optionally, the fatty alcohol polyoxyethylene ether is fatty alcohol polyoxyethylene ether AEO-9, and the alkanolamide surfactant is coconut oil fatty acid diethanolamide; The mass ratio of the fatty alcohol polyoxyethylene ether AEO-9 to the coconut oil fatty acid diethanolamide is 1:(2-6).
[0011] By adopting the above technical solution, the detergent can achieve both excellent and stable antifreeze properties and low-temperature cleaning effect through the synergistic effect of N-methylpyrrolidone and isopropanol.
[0012] Optionally, the composite surfactant further includes the cocamide methyl MEA, and the mass ratio of the fatty alcohol polyoxyethylene ether AEO-9, the coconut oil fatty acid diethanolamide and the cocamide methyl MEA is 1:(2-5):(1-4).
[0013] By adopting the above technical solution, and further introducing cocamide methyl MEA on the basis of fatty alcohol polyoxyethylene ether AEO-9 and coconut oil fatty acid diethanolamide, the residual adhesion of the cleaning agent on the surface to be cleaned can be effectively reduced, the stickiness after use can be reduced, and the irritating odor of coconut oil fatty acid diethanolamide can be reduced, improving the user's comfort and safety, without significantly weakening the overall cleaning ability of the cleaning agent.
[0014] Optionally, the composite surfactant is a composition of the branched isomeric alcohol ether surfactant, the alkyl glycoside, and the alkyl amine oxide surfactant.
[0015] Optionally, the branched isomeric alcohol ether surfactant is one of isomeric decayl alcohol polyoxyethylene ether and isomeric tridecyl alcohol polyoxyethylene ether, the alkyl glycoside is lauryl glucoside, and the alkyl amine oxide surfactant is lauryl amine oxide; By adopting the above technical solutions, the cleaning agent can effectively possess excellent stain removal and cleaning effects, low-temperature stability, easy rinsing with low residue, and low irritating odor. At the same time, compared with the use of fatty alcohol polyoxyethylene ether and alkanolamide surfactants, the composite surfactant is more environmentally friendly, which is conducive to further improving the environmental friendliness and safety of the cleaning agent.
[0016] Optionally, the antifreeze solvent further includes sorbitol, and the mass ratio of N-methylpyrrolidone, isopropanol and sorbitol is 4:(15-18):(2-5).
[0017] By adopting the above technical solution, the multi-hydroxy branched structure of sorbitol can form multiple hydrogen bonds with water molecules, which is beneficial to further reduce the freezing point of the system and inhibit ice crystal growth. At the same time, the mild and odorless properties of sorbitol can effectively reduce the overall irritating odor of antifreeze solvents when replacing isopropanol. Moreover, within the scope of the above solution, it can effectively prevent the increase of residual adhesion of cleaning agent due to excessive sorbitol and the impact on rinsing effect.
[0018] Optionally, the preservative is sodium benzoate and the fragrance is limonene.
[0019] By adopting the above technical solution, sodium benzoate has good low-temperature solubility stability and is not easy to precipitate or separate in low-temperature environments, which helps to ensure the low-temperature stability of the cleaning agent; while limonene can not only give the cleaning agent a refreshing citrus aroma to mask some of the irritating odor of the raw materials, but also enhance the dissolving and emulsifying effect of the composite surfactant on heavy oil stains through its own degreasing ability, thus having the dual functions of fragrance and efficacy enhancement.
[0020] Secondly, the antifreeze kitchen heavy oil stain cleaner provided in this application adopts the following technical solution: A method for preparing an antifreeze kitchen heavy-duty oil stain cleaner includes the following steps: S1. Add water, sodium hydroxide, and preservative to the dispersion tank in sequence, and stir thoroughly at 300-600 rpm for 5-10 minutes; then add triethanolamine and composite surfactant in sequence, and stir thoroughly at 500-800 rpm for 5-10 minutes; then add antifreeze solvent and fragrance in sequence, and stir thoroughly at 300-600 rpm for 10-15 minutes to obtain the cleaning agent solution; S2. The cleaning agent liquid is filled into the aerosol can using filling equipment, and the aerosol can is sealed and filled with propellant using inflation equipment. The nozzle is then attached and sealed to obtain the heavy oil stain cleaning agent.
[0021] By adopting the above technical solution, it is beneficial to ensure that all raw material components are fully dissolved and dispersed, and to prevent local over-concentration, uneven dissolution, or reactions between some raw materials. In addition, by controlling the stirring speed in stages, it is possible to ensure that the composite surfactant is fully dispersed in the cleaning agent while saving energy and reducing emissions, thereby obtaining a uniform and stable cleaning agent solution. Combined with the filling of the aerosol can, a convenient and effective antifreeze heavy oil stain cleaning agent with good atomization effect can be obtained.
[0022] Optionally, the propellant is liquefied petroleum gas (LPG), and the ratio of propane to butane in the LPG is 4:6.
[0023] In summary, the technical solution of this application has at least one of the following beneficial effects: 1. By using N-methylpyrrolidone and isopropanol as an antifreeze solvent, the freezing point of the cleaning agent can be effectively reduced, allowing the cleaning agent to remain uniform and stable at a low temperature of -20℃, without freezing or stratification, thus effectively solving the problems of poor low-temperature stability and poor spraying of existing cleaning agents.
[0024] 2. In a system using N-methylpyrrolidone and isopropanol as an antifreeze solvent, by compounding a specific range of complex surfactants, the cleaning agent can be guaranteed to have a high-efficiency emulsification and removal capability for stubborn heavy oil stains in the kitchen. This is beneficial for the cleaning agent to have both excellent and stable antifreeze properties and low-temperature cleaning effect. Attached Figure Description
[0025] Figure 1 This is a graph showing the test results of the antifreeze performance of a heavy oil stain cleaner according to Example 1 of this application.
[0026] Figure 2 This is a graph showing the test results of the antifreeze performance of a heavy oil stain cleaner, which is Comparative Example 3 of this application.
[0027] Figure 3This is a comparison chart of the antifreeze performance tests of Example 1 and Comparative Example 3 of this application. Detailed Implementation
[0028] The present application will be further described in detail below with reference to embodiments and comparative examples. Example
[0029]
Example 1
[0030] A method for preparing a heavy oil stain cleaner includes the following steps: S1. Add water, sodium hydroxide and preservative to the dispersion tank in sequence and stir thoroughly at 600 rpm for 5 minutes; then add triethanolamine and composite surfactant in sequence and stir thoroughly at 800 rpm for 5 minutes; then add antifreeze solvent and fragrance in sequence and stir thoroughly at 600 rpm for 10 minutes to obtain cleaning agent solution. S2. The cleaning agent liquid is filled into the aerosol can using filling equipment, and the aerosol can is sealed and filled with propellant using inflation equipment. The nozzle is then attached and sealed to obtain the heavy oil stain cleaning agent.
[0031] In this embodiment, the propellant is liquefied petroleum gas (LPG), and the ratio of propane to butane in the LPG is 4:6.
[0032]
Example 2
[0033] A method for preparing a surfactant for heavy oil pollution includes the following steps: S1. Add water, sodium hydroxide and preservative to the dispersion tank in sequence and stir thoroughly at 300 rpm for 10 min; then add triethanolamine and composite surfactant in sequence and stir thoroughly at 500 rpm for 10 min; then add antifreeze solvent and fragrance in sequence and stir thoroughly at 300 rpm for 15 min to obtain cleaning agent solution. S2. The cleaning agent liquid is filled into the aerosol can using filling equipment, and the aerosol can is sealed and filled with propellant using inflation equipment. The nozzle is then attached and sealed to obtain the heavy oil stain cleaning agent.
[0034] In this embodiment, the propellant is liquefied petroleum gas (LPG), and the ratio of propane to butane in the LPG is 4:6.
[0035]
Example 3
[0036] In this embodiment, the composite surfactant specifically includes 5 kg of fatty alcohol polyoxyethylene ether AEO-9 and 1 kg of coconut oil fatty acid diethanolamide.
[0037]
Example 4
[0038] In this embodiment, the composite surfactant also includes cocamide methyl MEA, specifically comprising 1 kg of fatty alcohol polyoxyethylene ether AEO-9, 4 kg of coconut oil fatty acid diethanolamide, and 2 kg of cocamide methyl MEA.
[0039]
Example 5
[0040] In this embodiment, the composite surfactant matrix includes 1 kg of fatty alcohol polyoxyethylene ether AEO-9, 2 kg of coconut oil fatty acid diethanolamide, and 4 kg of cocamidomethyl MEA.
[0041]
Example 6
[0042] In this embodiment, the composite surfactant is a composition of fatty alcohol polyoxyethylene ether and polyoxyethylene amide surfactant, specifically including 1 kg of fatty alcohol polyoxyethylene ether AEO-9 and 6 kg of cocamidomethyl MEA.
[0043]
Example 7
[0044] In this embodiment, the composite surfactant is a composition of isomeric alcohol ether and alkyl glycoside, specifically including 6 kg of isomeric deca-ol polyoxyethylene ether and 4 kg of lauryl glucoside.
[0045]
Example 8
[0046] In this embodiment, isotridecyl alcohol polyoxyethylene ether is used to replace isodecyl alcohol polyoxyethylene ether in equal amounts. Specifically, the composite surfactant includes 6 kg of isotridecyl alcohol polyoxyethylene ether and 4 kg of lauryl glucoside.
[0047]
Example 9
[0048] In this embodiment, the composite surfactant specifically includes 6 kg of isotridecyl alcohol polyoxyethylene ether, 3 kg of lauryl glucoside, and 1 kg of lauryl amine oxide.
[0049]
Example 10
[0050] In this embodiment, the antifreeze solvent also includes sorbitol, specifically 4 kg N-methylpyrrolidone, 15 kg isopropanol and 5 kg sorbitol.
[0051]
Example 11
[0052] In this embodiment, the antifreeze solvent specifically includes 4 kg of N-methylpyrrolidone, 10 kg of isopropanol, and 10 kg of sorbitol. Comparative Example
[0053] Comparative Example 1 A heavy oil stain cleaner, which differs from [Example 1] in that it does not contain an antifreeze solvent.
[0054] Comparative Example 2 A heavy oil stain cleaner, which differs from [Example 1] in that it uses a different antifreeze solvent.
[0055] In this comparative example, isopropanol was not added as the antifreeze solvent, and N-methylpyrrolidone was used to replace isopropanol in an equal amount, i.e., the antifreeze solvent included 24 kg of N-methylpyrrolidone.
[0056] Comparative Example 3 A heavy oil stain cleaner, which differs from Example 1 in that it uses a different antifreeze solvent.
[0057] In this comparative example, the antifreeze solvent did not contain N-methylpyrrolidone, and isopropanol was used to replace N-methylpyrrolidone in an equal amount, meaning the antifreeze solvent included 24 kg of isopropanol. Performance testing
[0058] Sample preparation: Referring to the formulations and preparation methods of each embodiment and comparative example, prepare the corresponding uncanned test cleaning agent liquid and canned and filled aerosol test cleaning agent. Then select the corresponding test sample according to the test content, or according to the corresponding...
[0059] 1. Antifreeze performance: Equal amounts of cleaning agent solution were placed in thin-walled transparent glass jars and placed in an environment of -20℃ for 48 hours. The condition of each cleaning agent solution was then observed.
[0060] 2. Low-temperature cleaning performance: The aerosol-type cleaning agent to be tested is placed in an environment of -20℃ for 48 hours beforehand. Then, the test is carried out directly according to Appendix A of "QB / T 4348-2012 Kitchen Grease Cleaning Agent". The test method is adjusted to hold the artificial oil stain test sample vertically on the washing rack of the washing machine, spray the cleaning agent to be tested on the oil stain surface of the test sample, keep it for 5 minutes, and then wash it with hydrophilic water for 30 seconds. After taking it out, the detergency (%) is calculated according to the standard. If freezing occurs in the antifreeze performance test, the test is not required.
[0061] 3. Residual Adhesion of Material: The test was conducted in advance with reference to the low temperature cleaning performance test. After the test, the surface was touched by hand and the stickiness of the residue on the test piece was scored on a scale of 1 to 5, where 1 is sticky and has a high residual adhesion; and 5 is non-sticky, clean and has a low residual adhesion.
[0062] 4. Odor test: Ten volunteers were randomly selected to rate the odor of the foam sprayed from each sample. The average score was then calculated, with a score of 1-10, where 1 is pungent and 10 is mild and non-pungent.
[0063] Table 1. Partial Performance Tests of Cleaning Agents
[0064] Combining Example 1 and Comparative Examples 1-3, the data in Table 1 and Figures 1-3It is known that by adding an antifreeze solvent composed of N-methylpyrrolidone and isopropanol to the cleaning agent, the low-temperature stability of the cleaning agent can be improved while maintaining its good degreasing and cleaning effect, and excellent antifreeze effect can be achieved, preventing the cleaning agent from freezing at -20℃. Figure 1 As shown in the figures, comparative examples 2-3 and their data show that using only N-methylpyrrolidone and isopropanol as antifreeze solvents in the cleaning agent does not significantly improve the antifreeze performance of the cleaning agent in this application's formulation. Although adding only 24% N-methylpyrrolidone can effectively lower the freezing point of the cleaning agent and prevent freezing, the system has poor stability, exhibiting stratification and partial precipitation of raw materials in low-temperature environments, failing to achieve uniform dispersion and mixing, resulting in a poor cleaning effect. Furthermore, since isopropanol has a relatively high freezing point, therefore... Figure 2 and Figure 3 As shown, using only isopropanol is not effective in preventing the cleaning agent from freezing in an environment of -20°C.
[0065] Based on the data from Examples 1 and 3 and Table 1, it can be seen that when the composite surfactant is a combination of fatty alcohol polyoxyethylene ether AEO-9 and coconut oil fatty acid diethanolamide, and the content of fatty alcohol polyoxyethylene ether AEO-9 is relatively low, the detergent can achieve both excellent and stable antifreeze properties and low-temperature cleaning effect under the synergistic effect of N-methylpyrrolidone and isopropanol. However, as the content of fatty alcohol polyoxyethylene ether AEO-9 increases to 5% of the total mass of the detergent, although the cleaning effect of the detergent can be improved to a certain extent, a small amount of crystal precipitation occurs in the system, which may affect the spraying situation when used as an aerosol.
[0066] Based on the data from Examples 1 and 4-6 and Table 1, it can be seen that, on the basis of using fatty alcohol polyoxyethylene ether AEO-9 and coconut oil fatty acid diethanolamide as the composite surfactant, replacing coconut oil fatty acid diethanolamide with a small amount of cocamide methyl MEA can effectively improve the residual adhesion of the cleaning agent and reduce the irritating odor, but at the same time it will slightly affect its cleaning effect.
[0067] Based on the data in Table 1 of Examples 1 and Comparative Examples 7-9, it can be seen that when the composite surfactant is a combination of branched isomeric alcohol ether surfactants and alkyl glycosides, the overall cleaning effect of the cleaning agent is reduced compared to the combination of fatty alcohol polyoxyethylene ether AEO-9 and coconut oil fatty acid diethanolamide. However, the irritating odor of the cleaning agent is significantly reduced, and the residual adhesion is also improved. Moreover, although the combination of branched isomeric alcohol ether surfactants and alkyl glycosides is more expensive than that of fatty alcohol polyoxyethylene ethers and coconut oil fatty acid diethanolamide, it is more environmentally friendly, which is conducive to further improving the environmental friendliness and safety of the cleaning agent.
[0068] Secondly, based on the selection of a composite surfactant consisting of branched isomeric alcohol ether surfactants and alkyl glycosides, isomeric tridecyl alcohol polyoxyethylene ether was chosen. Compared to isomeric decadecyl alcohol polyoxyethylene ether, the residual adhesion of the cleaning agent increased, but the cleaning effect was significantly improved. Additionally, by replacing a portion of the alkyl glycosides with a small amount of lauryl amine oxide, and combining it with isomeric tridecyl alcohol polyoxyethylene ether to form the surfactant, the residual adhesion of the cleaning agent could be improved while maintaining good cleaning effect, but this resulted in a slight decrease in its odor score.
[0069] Based on the data from Examples 5 and 10-11 and Table 1, it can be seen that by adding a small amount of sorbitol instead of isopropanol to the antifreeze solvents of N-methylpyrrolidone and isopropanol, the irritating odor of the cleaning agent can be effectively reduced. This is likely because the irritating odor of the cleaning agent mainly comes from isopropanol, and replacing part of the isopropanol with the less odorous sorbitol can directly reduce the proportion of isopropanol in the cleaning agent, thereby improving the odor. However, as the proportion of sorbitol further increases, the residual adhesion of the cleaning agent increases, and it cannot achieve thorough cleaning. This also indirectly leads to an increase in the low-temperature detergency obtained by the load-bearing measurement method.
[0070] This specific embodiment is merely an explanation of this application and is not intended to limit it. After reading this specification, those skilled in the art can make modifications to this specific embodiment without contributing any inventive step, but such modifications are protected by patent law as long as they fall within the scope of the claims of this application.
Claims
1. A heavy oil stain cleaner, characterized in that: The cleaning agent comprises the following raw materials by mass percentage based on its total mass: The composition includes: 6-10% compound surfactant; 20-30% antifreeze solvent; 0.2-0.25% preservative; 0.2-0.3% sodium hydroxide; 2-3% triethanolamine; 0.3-0.6% fragrance; and the balance being water. The composite surfactant is a combination of various surfactants including fatty alcohol polyoxyethylene ethers, alkanolamide surfactants, branched isomeric alcohol ether surfactants, alkyl glycosides, and alkyl amine oxide surfactants, and the antifreeze solvent includes at least N-methylpyrrolidone and isopropanol.
2. The heavy oil stain cleaning agent according to claim 1, characterized in that: The composite surfactant is a combination of fatty alcohol polyoxyethylene ether and alkanolamide surfactant, and the content of the fatty alcohol polyoxyethylene ether does not exceed 5% of the total mass of the cleaning agent.
3. The heavy oil stain cleaning agent according to claim 2, characterized in that: The fatty alcohol polyoxyethylene ether is fatty alcohol polyoxyethylene ether AEO-9, the alkanolamide surfactant is coconut oil fatty acid diethanolamide, and the mass ratio of fatty alcohol polyoxyethylene ether AEO-9 to coconut oil fatty acid diethanolamide is 1:(2-6).
4. The heavy oil stain cleaner according to claim 3, characterized in that: The composite surfactant also includes the cocamide methyl MEA, and the mass ratio of the fatty alcohol polyoxyethylene ether AEO-9, the coconut oil fatty acid diethanolamide and the cocamide methyl MEA is 1:(2-5):(1-4).
5. The heavy oil stain cleaner according to claim 1, characterized in that: The composite surfactant is a combination of the branched isomeric alcohol ether surfactant, the alkyl glycoside, and the alkyl amine oxide surfactant.
6. The heavy oil stain cleaning agent according to claim 5, characterized in that: The branched isomeric alcohol ether surfactant is one of isomeric decayl alcohol polyoxyethylene ether and isomeric tridecyl alcohol polyoxyethylene ether, the alkyl glycoside is lauryl glucoside, the alkyl amine oxide surfactant is lauryl amine oxide, and the mass ratio of the isomeric alcohol ether surfactant, the lauryl glucoside and the lauryl amine oxide is (4-6):(2-4):
1.
7. The heavy oil stain cleaning agent according to claim 1, characterized in that: The antifreeze solvent also includes sorbitol, and the mass ratio of N-methylpyrrolidone, isopropanol and sorbitol is 4:(15-18):(2-5).
8. The heavy oil stain cleaner according to claim 1, characterized in that: The preservative is sodium benzoate, and the fragrance is limonene.
9. A method for preparing a heavy oil stain cleaning agent, used to prepare the heavy oil stain cleaning agent as described in any one of claims 1-8, characterized in that, Includes the following steps: S1. Add water, sodium hydroxide, and preservative to the dispersion tank in sequence, and stir thoroughly at 300-600 rpm for 5-10 minutes; then add triethanolamine and composite surfactant in sequence, and stir thoroughly at 500-800 rpm for 5-10 minutes; then add antifreeze solvent and fragrance in sequence, and stir thoroughly at 300-600 rpm for 10-15 minutes to obtain the cleaning agent solution; S2. The cleaning agent liquid is filled into the aerosol can using filling equipment, and the aerosol can is sealed and filled with propellant using inflation equipment. The nozzle is then attached and sealed to obtain the heavy oil stain cleaning agent.
10. The method for preparing a heavy oil stain cleaning agent according to claim 9, characterized in that: The propellant is liquefied petroleum gas (LPG), and the ratio of propane to butane in the LPG is 4:6.