Cleaning agent, method for producing the same, aerosol, and method for cleaning throttle valve

Abstract

The present application relates to a kind of cleaning agent and its preparation method, aerosol and the cleaning method of throttle valve.The above-mentioned cleaning agent includes: water 20%~28%, aromatic hydrocarbon solvent oil 30%~40%, oleic acid 5%~10%, organic base 1%~6%, alcohol ether solvent 8%~12%, coconut oil fatty acid diethanolamide 3%~6% and emulsifier 3%~8% by mass percentage.The above-mentioned cleaning agent is good in environmental protection, simple to use, without disassembling throttle valve, and strong in cleaning ability, can be foamed so that dirty surface can be contacted to cleaning agent.

Description

Technical Field

[0001] This invention relates to the field of cleaning agent technology, and in particular to a cleaning agent and its preparation method, an aerosol, and a cleaning method for the throttle body. Background Technology

[0002] Industrial cleaning agents are used to clean oil stains adhering to the surfaces of vehicles, electrical equipment, buildings, etc., such as cleaning agents for cleaning car throttle valves and cleaning agents for cleaning boilers. Traditional cleaning agents mainly include the following types: (1) volatile solvent-based cleaning agents, which have the problem of high volatile organic compound (VOC) content; (2) water-based cleaning agents, which mainly appear in the form of oil-in-water emulsions, which dissolve some highly polar and soluble solvents in water to achieve the purpose of removing oil stains and carbon deposits, such as throttle valves. Although the VOC content of these cleaning agents is greatly reduced, they are slow to dissolve oil stains, have poor cleaning power, require disassembly during cleaning, which makes construction difficult, and require drying and rust prevention treatment after cleaning; (3) non-volatile, high flash point, all-oil-based cleaning agents, which are mainly composed of high flash point alkane solvents, base oils, cleaning dispersants, and protective agents. Although it has advantages such as being environmentally friendly, safe, and non-corrosive, its cleaning power is generally weak. It requires high temperatures (above 80°C) to work effectively. Furthermore, this type of cleaning agent usually does not foam, so it cannot reach some hard-to-reach places or corners. It also has a short residual time on the surface of dirty areas, resulting in incomplete and inadequate cleaning. Summary of the Invention

[0003] Based on this, some embodiments of the present invention provide a cleaning agent that is environmentally friendly, easy to use, requires no disassembly of the throttle body, has strong cleaning ability, and can foam so that all dirty surfaces can come into contact with the cleaning agent.

[0004] Other embodiments of the present invention also provide a method for preparing a cleaning agent, an aerosol, and a method for cleaning a throttle body.

[0005] A cleaning agent, by weight percentage, comprises: 20% to 28% water, 30% to 40% aromatic solvent oil, 5% to 10% oleic acid, 1% to 6% organic base, 8% to 12% alcohol ether solvent, 3% to 6% coconut oil fatty acid diethanolamide, and 3% to 8% emulsifier.

[0006] In some embodiments, the aromatic solvent oil includes one or more of S1500 solvent oil, trimethylbenzene, and tetramethylbenzene.

[0007] In some embodiments, the alcohol ether solvent includes one or more of ethylene glycol butyl ether and diethylene glycol butyl ether.

[0008] In some embodiments, the emulsifier includes one or more of isomeric alcohol polyoxyethylene ethers, nonylphenol polyoxyethylene ethers, and fatty alcohol polyoxyethylene ethers.

[0009] In some embodiments, the cleaning agent further includes 1% to 5% by mass of n-alcohol;

[0010] Optionally, the number of carbon atoms in the n-alcohol is less than or equal to 9;

[0011] Optionally, the n-alcohol includes one or more of n-butanol and n-octanol.

[0012] In some embodiments, the cleaning agent also includes 5% or less by weight of polyetheramine.

[0013] In some embodiments, the cleaning agent comprises, by weight percentage: 25%~28% water, 30%~35% aromatic solvent oil, 7%~10% oleic acid, 3%~5% organic base, 9%~11% alcohol ether solvent, 3%~6% coconut oil fatty acid diethanolamide, 3%~8% emulsifier, 3%~5% n-alcohol and 1%~3% polyether amine.

[0014] In some embodiments, the cleaning agent is a water-in-oil microemulsion.

[0015] A method for preparing a cleaning agent includes the following steps:

[0016] The following raw materials are obtained by weight percentage: water 20%~28%, aromatic solvent oil 30%~40%, oleic acid 5%~10%, organic base 1%~6%, alcohol ether solvent 8%~12%, coconut oil fatty acid diethanolamide 3%~6%, and emulsifier 3%~8%;

[0017] The raw materials are mixed to prepare a cleaning agent.

[0018] In some embodiments, the raw materials further include one or more of n-alcohols and polyetheramines, and the step of mixing the raw materials includes:

[0019] An oily solution was prepared by stirring and mixing aromatic solvent oil, alcohol ether solvent, coconut oil fatty acid diethanolamide, n-alcohol and polyether amine.

[0020] Aqueous solution is prepared by stirring and mixing water, organic base and emulsifier;

[0021] While stirring, the aqueous solution is added to the oily solution, and after mixing evenly, oleic acid is added to prepare the cleaning agent.

[0022] An aerosol comprising the aforementioned cleaning agent and propellant.

[0023] In some embodiments, the mass of the propellant accounts for 10% to 35% of the mass of the cleaning agent;

[0024] Optionally, the propellant includes liquefied petroleum gas.

[0025] A method for cleaning a throttle body includes the following steps:

[0026] The throttle body is cleaned using the aforementioned aerosol.

[0027] The aforementioned cleaning agent, through the combination of its components, yields a water-in-oil microemulsion cleaning agent. This agent stably and uniformly encapsulates water within aromatic solvent oil, achieving a maximum water content of 28%. This reduces the organic solvent content, making it more economical and environmentally friendly. Furthermore, when cleaning, for example, the throttle body, this cleaning agent can be directly sprayed onto it. Any residual liquid will enter the engine through the intake manifold and be burned. The secondary atomization (micro-explosion) of the microemulsion cleaning agent within the engine promotes more complete combustion, solving the problem of water-containing cleaning agents being unable to be directly sprayed onto the throttle body, while also preventing engine damage. In addition, the combination of these components allows the cleaning agent, when used as an aerosol, to produce fine and long-lasting foam, extending the contact time between the cleaning agent and dirt and carbon deposits, improving cleaning power, and ensuring that dirt and carbon deposits in hard-to-reach areas come into contact with the cleaning agent, further enhancing cleaning effectiveness. Attached Figure Description

[0028] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0029] Figure 1 This is a process flow diagram of a cleaning agent preparation method in some embodiments of the present invention;

[0030] Figure 2 The figures show the experimental results of the cleaning agent in Example 1 before and after high and low temperature testing;

[0031] Figure 3 The graph shows the experimental results of the cleaning agent in Example 1 before and after centrifugation at 3000 r / min for 10 min.

[0032] Figure 4 The figures show the experimental results of the cleaning agent in Example 1 before and after adding water;

[0033] Figure 5 The experimental results before and after adding oil to the cleaning agent in Example 1 are shown in the figure;

[0034] Figure 6 The image shows the actual throttle body inlet, inner wall of the throttle body, and intake passage cleaned with the cleaning agent of Example 1.

[0035] Figure 7 This is a schematic diagram of spraying the throttle valve with the aerosol from Example 1;

[0036] Figure 8 This is a schematic diagram of engine combustion after the aerosol from Example 1 is injected;

[0037] Figure 9 The figure shows the experimental results of cleaning the throttle body inner wall and intake manifold with the aerosol from Example 1.

[0038] Figure 10 This is a diagram showing the experimental record before the foaming test using the cleaning agent of Example 1;

[0039] Figure 11 This is a graph showing the experimental record of foam height reaching the 80mL mark during the foaming test using the cleaning agent from Example 1.

[0040] Figure 12 This is a graph showing the experimental record of foam height reaching the 40mL mark during the foaming test using the cleaning agent from Example 1.

[0041] Figure 13 This is a graph showing the experimental record of foam height being less than 1 mL in the foaming test using the cleaning agent of Example 1. Detailed Implementation

[0042] To facilitate understanding of the present invention, a more comprehensive description of the invention will be provided below in conjunction with specific embodiments. Preferred embodiments of the invention are given in the specific embodiments. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a thorough and complete understanding of the disclosure of the present invention.

[0043] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0044] Unless otherwise stated or in case of contradiction, the terms or phrases used in this invention shall have the following meanings:

[0045] In this invention, "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" and "second" may explicitly or implicitly include at least one of those features.

[0046] In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0047] In this invention, "one or several" refers to any one, any two, or any two or more of the listed items. "Several" refers to any two or more.

[0048] In this invention, unless otherwise specified, all percentage concentrations refer to the final concentration. The final concentration refers to the proportion of the added component in the system after the addition of that component.

[0049] The terms "preferred," "more preferably," etc., used in this invention refer to embodiments of the invention that provide certain beneficial effects under certain circumstances. However, other embodiments may also be preferred under the same or other circumstances. Furthermore, the description of one or more preferred embodiments does not imply that other embodiments are unavailable, nor is it intended to exclude other embodiments from the scope of this invention.

[0050] When a numerical range is disclosed in this invention, the range is considered continuous and includes the minimum and maximum values ​​of the range, as well as every value between the minimum and maximum values. Further, when the range refers to an integer, it includes every integer between the minimum and maximum values ​​of the range. Moreover, when multiple ranges are provided to describe a feature or characteristic, the ranges may be combined. In other words, unless otherwise specified, all ranges disclosed in this invention should be understood to include any and all subranges to which they are incorporated.

[0051] In this invention, the technical features described in an open-ended manner include both closed-ended technical solutions composed of the listed features and open-ended technical solutions that include the listed features.

[0052] The terms "comprising" and "having," and any variations thereof, used in embodiments of this invention are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or device that includes a series of steps or units is not limited to the steps or units listed, but may optionally include steps or units not listed, or may optionally include other steps or components inherent to such processes, methods, products, or devices.

[0053] In this invention, the reference to "embodiment" means that a specific feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it a mutually exclusive, independent, or alternative embodiment. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described in this invention can be combined with other embodiments.

[0054] The throttle body is one of the most important components of a car engine system. It controls the amount of air intake. The larger the intake volume, the more fuel the electronic control unit (ECU) controls, resulting in stronger combustion and explosion energy, which drives the piston to accelerate and thus controls the engine speed. Therefore, the throttle body is also known as the "throat" of the car. Whether the car accelerates smoothly and whether the idle speed is stable depends entirely on it. The smoothness of the car's acceleration, whether it is erratic, and whether the fuel consumption increases are all closely related to the cleanliness of the throttle body. A clean throttle body can make the engine smooth and powerful. Common causes of a dirty throttle body include: (1) a dusty environment and poor air filter performance; (2) high evaporation rate of the engine oil; (3) oil vapor and impurities in the crankcase are not discharged in time; (4) some dust is sucked in by the throttle body after the engine is turned off. Therefore, developing a throttle body cleaner is of great significance.

[0055] More and more car owners are now using cleaning agents to clean their throttle bodies themselves. Therefore, a good throttle body cleaner should not only have good cleaning power but also be easy to use, environmentally friendly, and economical. Ease of use means applying it directly to the car without disassembling the throttle body. However, directly rinsing without disassembling the throttle body can lead to problems. For example, volatile solvent-based cleaners can corrode some metal and rubber parts; water-based cleaners can cause starting problems or engine knocking; and oil-based cleaners don't foam, so they can't reach some hard-to-reach areas or corners, and the residue on the dirty surface doesn't last long. This results in incomplete and ineffective cleaning. Therefore, some embodiments of this invention provide a new, easy-to-use, environmentally friendly cleaner with good cleaning results.

[0056] Specifically, the first aspect of the present invention provides a cleaning agent comprising, by mass percentage: 20% to 28% water, 30% to 40% aromatic solvent oil, 5% to 10% oleic acid, 1% to 6% organic base, 8% to 12% alcohol ether solvent, 3% to 6% coconut oil fatty acid diethanolamide, and 3% to 8% emulsifier.

[0057] In some embodiments, the cleaning agent is a water-in-oil microemulsion.

[0058] In some embodiments, the cleaning agent can be applied to the cleaning of the throttle body. It is understood that the cleaning agent is not limited to cleaning the throttle body, but can also be applied to other areas containing oil or grease.

[0059] In a specific example, the water mass percentage may be, but is not limited to, 20%, 21%, 22%, 23%, 24%, 25%, 26%, 27%, 28%, or a range of any two of these values. Optionally, the water mass percentage in the cleaning agent may be 25% to 28%.

[0060] In a specific example, the mass percentage of aromatic solvent oil may be, but is not limited to, 30%, 31%, 32%, 33%, 34%, 35%, 36%, 37%, 38%, 39%, 40%, or any combination of these values. Optionally, the mass percentage of aromatic solvent oil in the cleaning agent is 30% to 35%.

[0061] In some embodiments, the aromatic solvent oil includes one or more of S1500 solvent oil, trimethylbenzene, and tetramethylbenzene. For example, the aromatic solvent oil is S1500 solvent oil, or the aromatic solvent oil is tetramethylbenzene, or the aromatic solvent oil is a mixture of trimethylbenzene and tetramethylbenzene.

[0062] Although there are many solvents that can dissolve oil stains, such as alcohol solvents, alkane solvents, aromatic solvents, alcohol ether solvents, ester solvents, and ketone solvents, alcohol solvents include ethanol and isopropanol, and alkane solvents include C6~C6 hydrocarbons. 12 The solvents used include alkanes, D-series solvents (de-aromatic solvents), chlorinated hydrocarbon solvents such as dichloromethane and n-propane bromide, alcohol ether solvents such as ethylene glycol methyl ether and ethylene glycol monobutyl ether, and ester solvents such as butyl acetate and ethyl acetate. However, the inventors found that alcohol solvents and alkane solvents cannot remove carbon deposits, chlorinated hydrocarbon solvents such as dichloromethane are highly corrosive, and ester solvents such as butyl acetate and ethyl acetate, as well as ketone solvents, evaporate too quickly and are not easy to form water-in-oil microemulsions. Aromatic solvents and alcohol ether solvents can dissolve carbon deposits. In addition, alcohol ether solvents can improve the emulsification effect and increase foam richness. Therefore, in some embodiments of the present invention, aromatic solvents are selected as the main solvent and alcohol ether solvents as co-solvents.

[0063] The type and content of surfactant determine the degree of microemulsification and the degree of foaming in subsequent aerosol formulations. Since some embodiments of this invention yield a water-in-oil microemulsion, a lower HLB value of the surfactant is preferable; therefore, oleic acid is used. However, oleic acid lacks hydrophilicity, necessitating the addition of an organic base to reduce the amount of lipophilic oleic acid and increase the amount of hydrophilic oleyl ammonium. Specifically, the organic base includes one or more of ammonia and ethanolamine.

[0064] Specifically, in the cleaning agent, the mass percentage of oleic acid may be, but is not limited to, 5%, 6%, 7%, 8%, 9%, 10%, or any combination of these values. Optionally, the mass percentage of oleic acid in the cleaning agent is 7% to 10%. In the cleaning agent, the mass percentage of organic base may be, but is not limited to, 1%, 2%, 3%, 4%, 5%, 6%, or any combination of these values. Optionally, the mass percentage of organic base in the cleaning agent is 3% to 5%.

[0065] The inventors discovered that simply adding oleic acid and an organic base, regardless of the ratio, did not achieve a satisfactory emulsification, let alone a microemulsion. Therefore, it was necessary to add a co-solvent. Experiments revealed that alcohol ether solvents, as co-solvents, could improve the emulsification effect, enabling the formation of a microemulsion.

[0066] In some embodiments, the alcohol ether solvent includes one or more of anti-whitening agent (ethylene glycol butyl ether) and large anti-whitening agent (diethylene glycol butyl ether).

[0067] In a specific example, the mass percentage of the alcohol ether solvent in the cleaning agent may be, but is not limited to, 8%, 9%, 10%, 11%, 12%, or any combination of these values. Optionally, the mass percentage of the alcohol ether solvent in the cleaning agent may be 9% to 11%.

[0068] The inventors discovered that while microemulsions can be obtained by adding water, aromatic solvents, oleic acid, organic bases, and alcohol ether solvents to cleaning agents, they cannot produce well-foaming foam when formulated into aerosols. Therefore, they increased the foaming ability by adding coconut oil fatty acid diethanolamide (6502). This substance is a nonionic surfactant with good compatibility in both water and aromatic solvents, and possesses excellent foaming, foam stabilizing, penetrating detergency, and hard water resistance properties. However, the amount of coconut oil fatty acid diethanolamide should not be excessive, as too much will affect the HLB value of the water-in-oil system, leading to emulsification failure.

[0069] Specifically, in the cleaning agent, the mass percentage of coconut oil fatty acid diethanolamide may be, but is not limited to, 3%, 3.5%, 4%, 4.5%, 5%, 5.5%, 6%, or any combination of these values.

[0070] Emulsifiers are added along with coconut oil fatty acid diethanolamide to improve emulsification and ensure the stability of the microemulsion. In some embodiments, the emulsifier includes, but is not limited to, one or more of isomeric alcohol polyoxyethylene ethers, nonylphenol polyoxyethylene ethers, and fatty alcohol polyoxyethylene ethers. Specifically, in the cleaning agent, the mass percentage of the emulsifier may be, but is not limited to, 3%, 4%, 5%, 6%, 7%, 8%, or any combination of these values.

[0071] In some embodiments, the cleaning agent comprises, by weight percentage: 25% to 28% water, 30% to 35% aromatic solvent oil, 7% to 10% oleic acid, 3% to 5% organic base, 9% to 11% alcohol ether solvent, 3% to 6% coconut oil fatty acid diethanolamide, and 3% to 8% emulsifier.

[0072] Furthermore, in some embodiments, a n-alcohol may be added to the cleaning agent. Specifically, the n-alcohol has 9 or fewer carbon atoms. In some embodiments, the n-alcohol includes one or more of n-butanol and n-octanol. By adding a n-alcohol in combination with an alcohol ether solvent, the emulsification effect can be further improved, and the cleaning agent applied to an aerosol will produce a finer foam, thereby increasing the contact area with the throttle body and improving the cleaning effect.

[0073] In some embodiments, the mass percentage of n-alcohol in the cleaning agent is 1% to 5%. In a specific example, the mass percentage of n-alcohol in the cleaning agent may be, but is not limited to, 1%, 2%, 3%, 4%, 5%, or a range of any two of these values. Optionally, the mass percentage of n-alcohol in the cleaning agent is 3% to 5%.

[0074] Specifically, in some embodiments, the cleaning agent comprises, by weight percentage: 20%~28% water, 30%~40% aromatic solvent oil, 5%~10% oleic acid, 1%~6% organic base, 8%~12% alcohol ether solvent, 3%~6% coconut oil fatty acid diethanolamide, 3%~8% emulsifier and 1%~5% n-alcohol.

[0075] In some embodiments, polyetheramine may also be added to the cleaning agent. Adding polyetheramine can further improve the removal of carbon deposits from intake valves, exhaust valves, engine cylinders, etc. In some embodiments, the mass percentage of polyetheramine in the cleaning agent is less than or equal to 5%. For example, the mass percentage of polyetheramine in the cleaning agent may be, but is not limited to, 1%, 1.5%, 2%, 2.5%, 3%, 3.5%, 4%, 4.5%, 5%, or any range of these values. Optionally, the mass percentage of polyetheramine in the cleaning agent is 1% to 3%.

[0076] In some embodiments, the cleaning agent comprises, by weight percentage: 20%~28% water, 30%~40% aromatic solvent oil, 5%~10% oleic acid, 1%~6% organic base, 8%~12% alcohol ether solvent, 3%~6% coconut oil fatty acid diethanolamide, 3%~8% emulsifier and ≤5% polyether amine.

[0077] Furthermore, in some embodiments, the cleaning agent comprises, by weight percentage: 20%~28% water, 30%~40% aromatic solvent oil, 5%~10% oleic acid, 1%~6% organic base, 8%~12% alcohol ether solvent, 3%~6% coconut oil fatty acid diethanolamide, 3%~8% emulsifier, 1%~5% n-alcohol and ≤5% polyether amine.

[0078] Furthermore, in some embodiments, the cleaning agent comprises, by weight percentage: 25%~28% water, 30%~35% aromatic solvent oil, 7%~10% oleic acid, 3%~5% organic base, 9%~11% alcohol ether solvent, 3%~6% coconut oil fatty acid diethanolamide, 3%~8% emulsifier, 3%~5% n-alcohol and 1%~3% polyether amine.

[0079] In one specific example, the cleaning agent, by weight percentage, comprises 25% water, 35% aromatic solvent oil, 8% oleic acid, 4% organic base, 10% alcohol ether solvent, 5% coconut oil fatty acid diethanolamide, 5% emulsifier, 5% n-alcohol, and 3% polyether amine. In another specific example, the cleaning agent comprises 28% water, 35% aromatic solvent oil, 8% oleic acid, 4% organic base, 10% alcohol ether solvent, 5% coconut oil fatty acid diethanolamide, 5% emulsifier, and 5% n-alcohol.

[0080] The above-mentioned cleaning agents have at least the following advantages:

[0081] (1) The above cleaning agent can be made into a water-in-oil microemulsion cleaning agent by combining the components. Deionized water is stably and uniformly wrapped in aromatic solvent oil, with the highest water concentration reaching 28%. This reduces the content of organic solvent in the throttle body cleaner, making it more environmentally friendly and economical.

[0082] (2) The cleaning agent can be sprayed directly onto the throttle body when cleaning it. The residual liquid will enter the engine through the intake manifold and burn. In addition, the cleaning agent is in a microemulsion state, similar to the secondary atomization (micro-explosion) of microemulsion fuel inside the engine, which can promote more complete combustion and solve the problem that water-containing throttle body cleaners cannot be sprayed directly onto the throttle body, while avoiding damage to the engine.

[0083] (3) When the above cleaning agent is used in aerosol, by producing fine and long-lasting foam, the cleaning agent can prolong the contact time with dirt and carbon deposits, thereby improving the cleaning power; it can also allow dirt and carbon deposits in some dead corners to come into contact with the cleaning agent, thereby improving the cleaning power.

[0084] A second aspect of the present invention provides a method for preparing a cleaning agent, comprising the following steps:

[0085] The following raw materials are obtained by weight percentage: water 20%~28%, aromatic solvent oil 30%~40%, oleic acid 5%~10%, organic base 1%~6%, alcohol ether solvent 8%~12%, coconut oil fatty acid diethanolamide 3%~6%, and emulsifier 3%~8%;

[0086] Mix the raw materials to prepare a cleaning agent.

[0087] In some embodiments, the step of mixing the raw materials includes:

[0088] An oily solution was prepared by mixing aromatic solvent oil, alcohol ether solvent and coconut oil fatty acid diethanolamide evenly.

[0089] Aqueous solution is prepared by mixing water, organic base and emulsifier evenly.

[0090] While stirring, add the aqueous solution to the oily solution, mix well, and then add oleic acid to prepare the cleaning agent.

[0091] Please see Figure 1 In some embodiments, the preparation method of the cleaning agent includes the following steps:

[0092] Step S110: Obtain the following raw materials by mass percentage: water 20%~28%, aromatic solvent oil 30%~40%, oleic acid 5%~10%, organic base 1%~6%, alcohol ether solvent 8%~12%, coconut oil fatty acid diethanolamide 3%~6%, and emulsifier 3%~8%.

[0093] Step S120: Mix aromatic solvent oil, alcohol ether solvent and coconut oil fatty acid diethanolamide evenly to prepare an oily solution.

[0094] Step S130: Mix water, organic base and emulsifier evenly to prepare an aqueous solution.

[0095] Step S140: While stirring, add the aqueous solution to the oily solution, mix well, and then add oleic acid to prepare the cleaning agent.

[0096] In some embodiments, the raw materials also include one or more of n-alcohols and polyetheramines, and in the step of preparing the oily solution, one or more of n-alcohols and polyetheramines are also added.

[0097] In some embodiments, the stirring speed is 60 r / min to 120 r / min. In a specific example, the stirring speed may be, but is not limited to, 60 r / min, 70 r / min, 80 r / min, 90 r / min, 100 r / min, 110 r / min, 120 r / min or any combination of these values.

[0098] The above steps can yield a water-in-oil microemulsion cleaning agent.

[0099] A third aspect of the present invention provides an aerosol comprising the cleaning agent and propellant described above.

[0100] In some embodiments, the propellant can be commonly used in the art, such as liquefied petroleum gas (LPG). LPG is a mixture of propane and butane. In a specific example, the LPG comprises 30% propane and 70% butane, also known as a 3:7 low-pressure gas.

[0101] In some embodiments, the mass of the propellant accounts for 10% to 35% of the mass of the cleaning agent. For example, the percentage of the propellant mass to the cleaning agent mass may be, but is not limited to, 10%, 12%, 15%, 18%, 20%, 22%, 25%, 28%, 30%, 32%, 35%, or any range of two of these values. Optionally, the percentage of the propellant mass to the cleaning agent mass is 20% to 25%.

[0102] At the above air-to-powder ratio, when used in conjunction with a cleaning agent, the aerosol can achieve good foaming effect, producing fine and uniform foam, thereby improving the cleaning ability of dirt in the dead corner of the throttle body.

[0103] A fourth aspect of the present invention provides a method for cleaning a throttle body, comprising the following steps:

[0104] Clean the throttle body using the aforementioned aerosol.

[0105] Specifically, the aerosol is sprayed onto the throttle body.

[0106] To make the objectives and advantages of the present invention clearer, the cleaning agent and its effects of the present invention are further described in detail below with reference to specific embodiments. It should be understood that the specific embodiments described herein are only for explaining the present invention and should not be used to limit the present invention. Unless otherwise specified, the following embodiments do not include components other than unavoidable impurities. Unless otherwise specified, the drugs and instruments used in the embodiments are conventional choices in the art. Experimental methods in the embodiments that do not specify specific conditions are implemented according to conventional conditions, such as those described in literature, books, or methods recommended by the manufacturer.

[0107] Example 1

[0108] This embodiment provides a cleaning agent, which, by mass percentage, comprises: 25% deionized water, 35% aromatic solvent oil S1500, 4% ethanolamine, 5% 6502, 8% oleic acid, 10% anti-whitening agent, 5% n-octanol, 5% isomeric tridecyl alcohol polyoxyethylene ether, and 3% polyetheramine.

[0109] The preparation steps of the cleaning agent in this embodiment are as follows:

[0110] (1) Weigh the above raw materials by mass percentage.

[0111] (2) Dissolve and stir aromatic solvent oil S1500, polyetheramine, anti-whitening water, n-octanol and 6502 evenly to form an oily solution.

[0112] (3) Stir deionized water, ethanolamine and isotridecyl alcohol polyoxyethylene ether evenly to form an aqueous solution.

[0113] (4) Slowly add the aqueous solution to the oily solution while stirring at a speed of 80 rpm. After stirring evenly, add oleic acid and continue stirring to obtain a clear liquid, which is the cleaning agent of this embodiment.

[0114] This embodiment also provides an aerosol, comprising the above-mentioned cleaning agent and liquefied petroleum gas (including 30% propane and 70% butane), wherein the mass ratio of the cleaning agent to the liquefied petroleum gas is 100:20.

[0115] Example 2

[0116] This embodiment provides a cleaning agent, which, by mass percentage, comprises: 25% deionized water, 25% tetramethylbenzene, 10% trimethylbenzene, 4% ammonia, 5% 6502, 8% oleic acid, 10% Dafang whitening agent, 5% n-octanol, 5% isomeric tridecyl alcohol polyoxyethylene ether, and 3% polyetheramine.

[0117] The preparation steps of the cleaning agent in this embodiment are as follows:

[0118] (1) Weigh the above raw materials by mass percentage.

[0119] (2) Dissolve and stir tetramethylbenzene, trimethylbenzene, polyetheramine, tert-method whitening agent, n-octanol and 6502 to form an oily solution.

[0120] (3) Stir deionized water, ammonia water and isomeric alcohol tridecyl polyoxyethylene ether evenly to form an aqueous solution.

[0121] (4) Slowly add the aqueous solution to the oily solution while stirring at a speed of 80 rpm. After stirring evenly, add oleic acid and continue stirring to obtain a clear liquid, which is the cleaning agent of this embodiment.

[0122] This embodiment also provides an aerosol, comprising the above-mentioned cleaning agent and liquefied petroleum gas (including 30% propane and 70% butane), wherein the mass ratio of the cleaning agent to the liquefied petroleum gas is 100:30.

[0123] Example 3

[0124] This embodiment provides a cleaning agent, which, by mass percentage, comprises: 28% deionized water, 35% tetramethylbenzene, 4% ammonia, 5% 6502, 8% oleic acid, 10% Dafang whitening agent, 5% n-octanol, and 5% nonylphenol polyoxyethylene ether.

[0125] The preparation steps of the cleaning agent in this embodiment are as follows:

[0126] (1) Weigh the above raw materials by mass percentage.

[0127] (2) Dissolve and stir the tetramethylbenzene, daphne, n-octanol and 6502 to form an oily solution.

[0128] (3) Stir deionized water, ammonia and nonylphenol polyoxyethylene ether evenly to form an aqueous solution.

[0129] (4) Slowly add the aqueous solution to the oily solution while stirring at a speed of 80 rpm.

[0130] This embodiment also provides an aerosol, comprising the above-mentioned cleaning agent and liquefied petroleum gas (including 30% propane and 70% butane), wherein the mass ratio of the cleaning agent to the liquefied petroleum gas is 100:30.

[0131] The specific compositions of the cleaning agent and aerosol in the above embodiments are shown in Table 1 below.

[0132] Examples 4 to 6

[0133] The specific composition of the cleaning agents in Examples 4 to 6 is shown in Table 2. The preparation steps are the same as those in Example 1 and will not be repeated here.

[0134] The specific composition of the aerosols in Examples 4 to 6 is shown in Table 2.

[0135] Table 1. Composition of the cleaning agent and aerosol in Examples 1-3

[0136]

[0137] Table 2. Composition of the cleaning agent and aerosol in Examples 4-6

[0138]

[0139] Table 3. Composition of the cleaning agents and aerosols in Comparative Examples 1 to 3

[0140]

[0141] Table 4 shows the composition of the cleaning agent and aerosol in Comparative Example 4.

[0142]

[0143] Comparative Example 1

[0144] Comparative Example 1 provides a cleaning agent and an aerosol, which differ from Example 1 in that 6501 is used instead of 6502. The specific composition of the cleaning agent and aerosol in Comparative Example 1 is shown in Table 3.

[0145] Comparative Example 2

[0146] Comparative Example 2 provides a cleaning agent and an aerosol, the composition of which is shown in Table 3.

[0147] Comparative Example 3

[0148] Comparative Example 3 provides a cleaning agent and an aerosol, the composition of which is shown in Table 3.

[0149] Comparative Example 4

[0150] Comparative Example 4 provides a cleaning agent and an aerosol, the composition of which is shown in Table 4.

[0151] The following is the test section:

[0152] 1. Identification of microemulsions:

[0153] (1) High and low temperature test for 1 month (-10℃ to 50℃) to see if the liquid is clear. If it is clear, a microemulsion is formed.

[0154] (3) After centrifuging at 3000 r / min for 10 min, observe whether the mixture separates into layers and whether it remains clear and transparent. If it remains clear and transparent, a microemulsion is formed.

[0155] (3) If a small amount of oily solvent or deionized water is added to the liquid and the liquid remains clear, a microemulsion is formed.

[0156] The experimental results of the cleaning agent in Example 1 before and after the high and low temperature tests are shown in the following figures. Figure 2 As shown, Figure 1 The left side shows the result before the assessment, and the right side shows the result after the assessment. From Figure 2 As can be seen from the data, the throttle body cleaner remained a clear and transparent solution for one month before and after the high and low temperature tests, without any stratification, indicating good stability.

[0157] The experimental results of the cleaning agent in Example 1 before and after centrifugation at 3000 r / min for 10 min are shown in the figure below. Figure 3 As shown. From Figure 3As can be seen, the cleaning agent was a clear and transparent solution before and after centrifugation, without any stratification, indicating good stability.

[0158] The experimental results of the cleaning agent before and after adding water in Example 1 are shown in the figure below. Figure 4 As shown, from Figure 4 As can be seen, when deionized water is slowly added to the cleaning agent of Example 1, it remains a transparent liquid.

[0159] The experimental results of the cleaning agent before and after adding oil in Example 1 are shown in the figure below. Figure 5 As shown, from Figure 5 As can be seen, when gasoline is slowly added dropwise to the cleaning agent of Example 1, it remains a transparent liquid.

[0160] The above experiments show that the cleaning agent of Example 1 can dissolve both water and oil, and does not separate or become turbid after centrifugation. The liquid remains transparent even at high and low temperatures, proving that the cleaning agent of Example 1 has reached a microemulsion state.

[0161] 2. Throttle body cleaning process:

[0162] (1) Open the hood of the car, locate the intake manifold, remove the intake manifold, and you should be able to observe the inside of the throttle body. Take a picture of the inside of the throttle body. Figure 6 As shown, Figure 6 In the image, (a), (b), and (c) are actual images of the air intake, throttle body inner wall, and air intake passage before cleaning, respectively.

[0163] (2) Attach the cleaning agent from Example 1 to the nozzle and shake well; spray the cleaning agent evenly into all the dirty areas of the throttle body, spraying for about 20-25 seconds, then let it stand for 3 minutes. The specific spraying method is as follows: Figure 7 As shown;

[0164] (3) Keep the engine speed at 1000rpm-2000rpm until the white smoke disappears. Figure 8 As shown, the area inside the box represents white smoke;

[0165] (4) Turn off the engine and let it sit for 5 minutes, take a picture, and reinstall the air filter. The cleaned throttle body and intake manifold should look like this. Figure 9 As shown, Figure 9 The left side (a) shows the inner wall of the throttle body after cleaning, and the right side (b) shows the intake manifold after cleaning.

[0166] (5) Check if the vehicle is in good working order.

[0167] Comparing the before and after images, it's clear that the oil and carbon deposits have been significantly removed, and the vehicle can start, idle, and drive normally without any abnormalities. These tests demonstrate that the cleaning fluid can be directly applied to the throttle body and intake manifold, exhibiting extremely strong cleaning capabilities. Furthermore, the fluid's combustion in the engine did not cause any malfunctions or damage.

[0168] 3. Foaming test

[0169] (1) Clean and dry the graduated cylinder, and record the experimental data as follows: Figure 10 As shown;

[0170] (2) Aim the nozzle at the bottom of the measuring cylinder and spray;

[0171] (3) such as Figure 11 As shown, once the liquid reaches the 80mL mark, stop spraying and record the time t1 as 13:57:53;

[0172] (4) such as Figure 12 As shown, the time t2 for the foam height to reach 40 mL was recorded as 13:58:40. From t2 and t1, we can obtain T. 1 / 2 It lasted 47 seconds;

[0173] (5) such as Figure 13 As shown, the time t3 when the foam height was less than 1 mL was recorded as 13:59:42;

[0174] (6) For example Figure 13 As shown, the volume V of the liquid in the measuring cylinder is recorded as 16 mL.

[0175] According to the formula foaming coefficient = 80 / V*100%, the foaming coefficient is 500%. The larger the foaming coefficient, the stronger the foaming ability.

[0176] T 1 / 2 The larger the value, the weaker the defoaming ability, the longer the contact time between the foam and the dirt, and the better the cleaning power.

[0177] The above tests demonstrate that the cleaning agent in the above embodiment produces abundant foam with a foaming coefficient as high as 500%, and the foam is fine. The foam exhibits good persistence. 1 / 2 The cleaning time is 47 seconds, indicating good cleaning power.

[0178] 4. Technical specifications are shown in Table 5 below:

[0179] Table 5

[0180]

[0181] It should be noted that Examples 1 to 6 have performance comparable to Example 1, and will not be repeated here.

[0182] The performance of the cleaning agents and aerosols of Comparative Examples 1 to 4 is shown in Table 6 below.

[0183] Table 6. Performance of the cleaning agents and aerosols in Comparative Examples 1 to 4

[0184]

[0185] As can be seen from Table 6 above, some properties of the cleaning agents in Comparative Examples 1 to 4 do not meet the requirements, such as low foaming coefficient and T. 1 / 2 The short time frame resulted in stratification during centrifugation.

[0186] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0187] The above-described embodiments are merely illustrative of several implementation methods of the present invention, facilitating a detailed understanding of the technical solutions of the present invention, but should not be construed as limiting the scope of protection of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the scope of protection of the present invention. It should be understood that technical solutions obtained by those skilled in the art based on the technical solutions provided by the present invention through logical analysis, reasoning, or limited experimentation are all within the scope of protection of the appended claims. Therefore, the scope of protection of this invention patent should be determined by the content of the appended claims, and the specification and drawings can be used to interpret the content of the claims.

Claims

1. A cleaning agent, characterized in that, By mass percentage, it includes: 20%~28% water, 30%~40% aromatic solvent oil, 5%~10% oleic acid, 1%~6% organic base, 1%~5% n-alcohol, 8%~12% alcohol ether solvent, 3%~6% coconut oil fatty acid diethanolamide 6502 and 3%~8% emulsifier.

2. The cleaning agent according to claim 1, characterized in that, The aromatic solvent oil includes one or more of S1500 solvent oil, trimethylbenzene, and tetramethylbenzene.

3. The cleaning agent according to claim 1, characterized in that, The alcohol ether solvent includes one or more of ethylene glycol butyl ether and diethylene glycol butyl ether.

4. The cleaning agent according to claim 1, characterized in that, The emulsifier includes one or more of isomeric alcohol polyoxyethylene ether, nonylphenol polyoxyethylene ether, and fatty alcohol polyoxyethylene ether.

5. The cleaning agent according to any one of claims 1 to 4, characterized in that, The n-alcohol has 9 or fewer carbon atoms.

6. The cleaning agent according to any one of claims 1 to 4, characterized in that, The n-alcohols include one or more of n-butanol and n-octanol.

7. The cleaning agent according to any one of claims 1 to 4, characterized in that, The cleaning agent also includes 5% or less by weight of polyetheramine.

8. The cleaning agent according to claim 7, characterized in that, The cleaning agent comprises, by weight percentage: 25%~28% water, 30%~35% aromatic solvent oil, 7%~10% oleic acid, 3%~5% organic base, 9%~11% alcohol ether solvent, 3%~6% coconut oil fatty acid diethanolamide 6502, 3%~8% emulsifier, 3%~5% n-alcohol and 1%~3% polyether amine.

9. The cleaning agent according to any one of claims 1 to 4 and 8, characterized in that, The cleaning agent is a water-in-oil microemulsion.

10. A method for preparing a cleaning agent, characterized in that, Includes the following steps: The following raw materials are obtained by weight percentage: water 20%~28%, aromatic solvent oil 30%~40%, oleic acid 5%~10%, organic base 1%~6%, n-alcohol 1%~5%, alcohol ether solvent 8%~12%, coconut oil fatty acid diethanolamide 6502 3%~6%, and emulsifier 3%~8%; The raw materials are mixed to prepare a cleaning agent.

11. The method for preparing the cleaning agent according to claim 10, characterized in that, The raw materials also include polyetheramine, and the step of mixing the raw materials includes: An oily solution was prepared by stirring and mixing aromatic solvent oil, alcohol ether solvent, coconut oil fatty acid diethanolamide 6502, n-alcohol and polyether amine. Aqueous solution is prepared by stirring and mixing water, organic base and emulsifier; While stirring, the aqueous solution is added to the oily solution, and after mixing evenly, oleic acid is added to prepare the cleaning agent.

12. An aerosol, characterized in that, It includes a cleaning agent and a propellant, wherein the cleaning agent is the cleaning agent according to any one of claims 1 to 9 or the cleaning agent prepared by the preparation method according to any one of claims 10 to 11.

13. The aerosol according to claim 12, characterized in that, The mass of the propellant accounts for 10% to 35% of the mass of the cleaning agent.

14. The aerosol according to claim 13, characterized in that, The propellant includes liquefied petroleum gas.

15. A method for cleaning a throttle body, characterized in that, Includes the following steps: The throttle body is cleaned using the aerosol according to any one of claims 12 to 14.

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