A fuel detergent composition and preparation method thereof

Abstract

The present invention relates to the field of resin materials, and discloses a fuel detergent composition, comprising the following components: 30-60 parts of a fuel detergent main agent, 0.5-1 parts of a rust inhibitor, 0.3-1 parts of an anti-emulsifier, and 10-65 parts of a solvent; wherein the main agent comprises polyetheramine, Mannich base, and polyisobutylene succinate. A small amount of the composition of the present invention can achieve a "one-box" cleaning effect by adding it to fuel, and the prepared product not only has a good cleaning effect on a combustion chamber, a fuel injector, and an intake valve, but can also effectively inhibit and reduce carbon deposition in the combustion chamber, and has high cleaning efficiency and outstanding effect.

Description

Technical Field

[0001] The invention relates to the field of fuel detergents, and in particular to a fuel detergent composition and a preparation method and application thereof. Background Art

[0002] After long-term operation, a large amount of carbonaceous deposits will form in the combustion chamber, fuel injector, intake valve and other parts of the automobile engine, which seriously affects the efficiency, operating performance and exhaust emissions of the engine. In particular, with the development of more and more direct injection engine technology, the engine tends to be miniaturized, which can greatly improve fuel economy. However, this trend of the engine puts it in a more demanding working environment, such as high fuel temperature (>1000℃), high injection pressure (10-20MPa), etc., which will cause a series of other problems, such as increased fuel consumption and serious carbon deposition. Adding gasoline detergent to gasoline is an effective measure to inhibit and remove engine deposits and improve fuel power and economy. There are many types of detergents on the market, but most of them have poor cleaning effects on combustion chamber carbon deposits, and some even increase combustion chamber carbon deposits and fail to achieve a cleaning effect. Summary of the invention

[0003] The purpose of the present invention is to overcome the deficiencies of the prior art and provide a fuel detergent composition with excellent carbon deposit cleaning effect.

[0004] Therefore, the first aspect of the present invention provides a fuel detergent composition, which includes the following components by weight: 30-60 parts of a main agent, 0.5-1 parts of a rust inhibitor, 0.3-1 parts of an anti-emulsifier, and 10-65 parts of a solvent; the main agent includes polyetheramine, Mannich base, and polyisobutylene succinate. By selecting polyetheramine, Mannich base, and polyisobutylene succinate as the main agent, the carbon deposits and sediments in the automobile fuel system, intake system, combustion chamber, etc. can be efficiently cleaned and inhibited, and has an excellent cleaning effect.

[0005] Preferably, the main agent comprises 15-30 parts by weight of polyetheramine, 10-20 parts by weight of Mannich base and 5-10 parts by weight of polyisobutylene succinate.

[0006] Preferably, the molecular weight of the polyetheramine is 1000-1400. The molecular weight of the polyetheramine in this range is moderate, and not only has good detergency, but also is easily decomposed and consumed at high temperature, and will not cause an increase in combustion chamber deposits.

[0007] Preferably, the structure of the Mannich base is a mixture of one or two of the following:

[0008]

[0009] Wherein, R1 and R2 are polyisobutylene groups with molecular weight of 800-1300 respectively.

[0010] Preferably, the polyisobutylene succinate can be selected from at least one of polyisobutylene succinate pentaerythritol succinate, polyisobutylene succinate ethylene glycol succinate, polyisobutylene succinate sorbitol succinate and polyisobutylene succinate xylitol succinate.

[0011] Preferably, the rust inhibitor is at least one of sulfonate or fatty acid or fatty acid derivative; and / or, the anti-emulsifier is a polyoxypropylene derivative; and / or, the solvent is one or a mixture of D80 or D100.

[0012] Preferably, the composition further contains an ashless antiknock agent.

[0013] Preferably, the composition also contains an ashless friction modifier.

[0014] Preferably, the ashless antiknock agent is 5-12 parts, and the ashless friction modifier is 1-9 parts.

[0015] Preferably, the ashless antiknock agent is at least one of ethers, esters or amines, and the ashless friction modifier is at least one of phosphate or phosphite compounds.

[0016] According to a second aspect of the present invention, a method for preparing a fuel detergent composition is provided, comprising the following steps: adding the above fuel detergent composition according to corresponding weight parts into a reaction kettle, stirring at a temperature of 20-50°C for a certain period of time, cooling to room temperature after forming a uniform liquid, and filtering to obtain the fuel detergent composition. Impurities or particles introduced during the preparation and production process are removed by filtering.

[0017] According to a third aspect of the present invention, there is provided a fuel detergent composition or a method for preparing the fuel detergent composition and its use in a vehicle engine.

[0018] The composition of the present invention can achieve a "one-box" cleaning effect by adding a small amount to the engine. The prepared product not only has a good cleaning effect on the combustion chamber, the fuel injection nozzle, and the intake valve, but also can effectively inhibit and reduce carbon deposits in the combustion chamber, with high cleaning efficiency and outstanding effect. By selecting polyetheramine, Mannich base and polyisobutylene succinate as the main agent, carbon deposits and sediments in the automobile fuel system, intake system, combustion chamber, etc. can be efficiently cleaned and inhibited, and excellent cleaning effect is achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 The following are the actual vehicle cleaning effect diagrams of this application, where (a) is the combustion chamber cleaning effect; (b) is the fuel injector cleaning effect DETAILED DESCRIPTION

[0020] The endpoints and any values ​​of the ranges disclosed in this article are not limited to the precise ranges or values, and these ranges or values ​​should be understood to include values ​​close to these ranges or values. For numerical ranges, the endpoint values ​​of each range, the endpoint values ​​of each range and the individual point values, and the individual point values ​​can be combined with each other to obtain one or more new numerical ranges, which should be considered as specifically disclosed in this article.

[0021] According to a first aspect of the present invention, a fuel detergent composition is provided, which comprises the following components by weight: 30-60 parts of a main agent, 0.5-1 parts of a rust inhibitor, 0.3-1 parts of an anti-emulsifier, and 10-65 parts of a solvent; the main agent comprises polyetheramine, Mannich base, and polyisobutylene succinate.

[0022] The content of each component in the fuel detergent composition can vary within a large range. For example, the composition can contain 30-60 parts of a main agent, 0.5-1 parts of a rust inhibitor, 0.3-1 parts of an anti-emulsifier, and 10-65 parts of a solvent. From the perspective of further improving the detergent's cleaning and dispersibility while reducing costs, preferably, the composition can contain 40-60 parts of a main agent, 0.8-1 parts of a rust inhibitor, 0.5-0.8 parts of an anti-emulsifier, and 40-60 parts of a solvent.

[0023] According to the main agent in the present invention, polyetheramine, Mannich base, and polyisobutylene succinate each have different cleaning effects. Mannich base has excellent performance advantages in controlling the generation of fuel system and intake system deposits, and has high thermal stability, but it is not easy to decompose at high temperatures, which will cause an increase in combustion chamber deposits. Polyetheramine contains polyether and amine structures in its molecular structure. The polyetheramine of this structure is an oil-soluble surfactant, which can effectively inhibit the increase of combustion chamber deposits, but the cleaning effect on the intake system such as fuel injectors and intake valves is relatively unobvious, and the cost is relatively high. Polyisobutylene succinate is an ashless dispersant, has excellent high and low temperature dispersibility and antioxidant properties, does not need to add antioxidants, and has low cost. The present invention selects polyetheramine, Mannich base and polyisobutylene succinate as the main agent, which can efficiently clean and inhibit carbon deposits and deposits in automobile fuel systems, intake systems, combustion chambers, etc., has excellent cleaning effects, and can also improve fuel economy and reduce fuel consumption to a certain extent.

[0024] According to the present invention, the content of the main agent can be 15-30 parts by weight of polyether amine, 10-20 parts by weight of Mannich base, and 5-10 parts by weight of polyisobutylene succinate.

[0025] Preferably, the molecular weight of the polyetheramine is 1000-1400. The molecular weight of the polyetheramine in this range is moderate, not only has good cleaning ability, but also is easily decomposed and consumed at high temperature, and will not cause an increase in combustion chamber deposits. If the molecular weight of the polyetheramine is too low, its cleaning effect is poor, and if it is too high, its thermal stability is high and it is not easy to degrade. Specifically, for example, 9522D of Lubrizol and FL1000 of Huntsman can be used.

[0026] Preferably, the structure of the Mannich base is a mixture of one or two of the following:

[0027]

[0028]

[0029] Wherein, R1 and R2 are polyisobutylene with molecular weight of 800-1300 respectively. The Mannich bases of these two structures have better cleaning effect. Specifically, for example, the Mannich base series products of Afton Chemical Corporation can be used.

[0030] According to the present invention, preferably, the polyisobutylene succinate can be selected from at least one of polyisobutylene pentaerythritol succinate, polyisobutylene ethylene glycol succinate, polyisobutylene sorbitol succinate, and polyisobutylene xylitol succinate. Specifically, for example, LZ936 and LZL156 from Lubrizol can be used.

[0031] According to the present invention, preferably, the rust inhibitor is a substance that protects the engine fuel system components from rusting, and such rust inhibitors are preferably sulfonates, fatty acids, or one or more fatty acid derivatives; more preferably, the sulfonates are such as sodium petroleum sulfonate T702 and barium dinonylnaphthalene sulfonate T705A; the fatty acids are such as dodecenyl succinic acid T746; the fatty acid derivatives are such as dodecenyl succinate T747 and zinc cyclohexaneate T704. The present invention has no particular restrictions on the source of the rust inhibitor, and commercially available products of the above-mentioned rust inhibitors known to those skilled in the art can be used.

[0032] According to the present invention, preferably, the anti-emulsifier is a substance that prevents gasoline from emulsifying after mixing with water and improves the anti-emulsification performance of the oil product. As such an anti-emulsifier, polyoxypropylene derivatives are preferably cited, and specifically, the D114 model can be used.

[0033] According to the present invention, preferably, the solvent is an environmentally friendly solvent, which not only serves as a carrier and dilution solvent for various additives, but also can further avoid the generation of ash and maintain the cleanliness level of the engine. As such a solvent, D80 or D100 solvent oil is preferably cited; D80 and D100 are both produced by Maoming Petrochemical Company.

[0034] According to the present invention, preferably, the fuel detergent composition also contains an ashless antiknock agent and / or an ashless friction modifier. The addition of the ashless antiknock agent can increase the octane number of gasoline, reduce fuel consumption, increase engine power, improve the conversion effect of the three-way catalytic converter (the most important off-board purification device installed in the automobile exhaust system, which can convert harmful gases in the exhaust gas such as CO, nitrogen oxides, etc. into harmless gases), and reduce automobile exhaust emissions. The addition of the ashless friction modifier can improve the lubrication ability of various parts of the engine fuel system, improve fuel economy, reduce fuel consumption, prevent engine wear, and extend the service life of the engine. In addition, the addition of the ashless antiknock agent and the ashless friction modifier will not increase the carbon deposits or sediments in the combustion chamber, and the cleaning effect is more prominent.

[0035] In the present invention, the ashless antiknock agent is 5-12 parts, and the ashless friction modifier is 1-9 parts; more preferably, the ashless antiknock agent is 8-10 parts, and the ashless friction modifier is 2-8 parts.

[0036] According to the present invention, the ashless antiknock agent is an ether, ester or amine antiknock agent; preferably, the ether ashless antiknock agent is, for example, methyl tert-butyl ether, ethyl tert-butyl ether, diisopropyl ether, and specifically, methyl tert-butyl ether produced by Jinan Mingwei Chemical Co., Ltd. can be used; the ester ashless antiknock agent is, for example, dimethyl carbonate, malonic ester, phosphate ester, polyoxyethylene diene ether dicarboxylate, and specifically, dimethyl carbonate produced by Shandong Shida Shenghua Chemical Group Co., Ltd. can be used; the amine ashless antiknock agent is, for example, N-methylaniline, and specifically, the product produced by Tianjin Baishi Chemical Co., Ltd. can be used.

[0037] According to the present invention, the ashless friction modifier is a phosphate or phosphite compound; preferably, the phosphate is for example triphenyl phosphate and tricresyl phosphate; the phosphite is for example di-n-butyl phosphite. The present invention has no particular restrictions on the source of the ashless friction modifier, and commercially available products of the above-mentioned triphenyl phosphate, tricresyl phosphate, and di-n-butyl phosphite, which are well known to those skilled in the art, can be used.

[0038] According to a second aspect of the present invention, a method for preparing a fuel detergent composition is provided. The preparation method of molding the fuel detergent composition is not particularly limited and can be carried out using various molding equipment and molding conditions commonly used in the art.

[0039] Preferably, in a preferred embodiment of the present invention, the method for preparing the fuel detergent composition comprises the following steps:

[0040] The detergent main agent and other various additives are added to the reactor in sequence according to the corresponding mass ratio, stirred at a temperature of 20-50 degrees Celsius for a certain period of time, cooled to room temperature after forming a uniform liquid, and filtered to remove impurities or particles introduced during the preparation and production process to obtain the desired product.

[0041] The reaction kettle can be various mixing equipment commonly used in the art, such as a blending kettle, an oil blender, and the like.

[0042] The stirring time is sufficient as long as the mixed materials are evenly mixed. For example, when using a blending kettle, the stirring time is 1-3 hours and the mixing speed is 60r / min-300r / min.

[0043] According to a third aspect of the present invention, there is provided a fuel detergent composition of the present invention or use of the fuel detergent composition in a vehicle engine.

[0044] Preferably, the cleaning agent is used for vehicles using gasoline or diesel as fuel.

[0045] The present invention will be described in detail below by way of examples, but the present invention is not limited to the following examples.

[0046] In the following examples, the components are as follows:

[0047] Polyetheramine: 9522D, Lubrizol Corporation

[0048] Mannich base: HiTEC 65200, Afton Chemical Corporation

[0049] Polyisobutylene succinate: LZL156, Lubrizol Lanchuang Company

[0050] Rust inhibitor: Dodecenyl succinate T747, Jinzhou Shengda Chemical Company

[0051] Demulsifier: Polyoxypropylene derivative D114

[0052] Solvent: D100, Maoming Petrochemical

[0053] Ashless anti-explosion agent: dimethyl carbonate, Shida Shenghua

[0054] Ashless friction modifier: triphenyl phosphate

[0055] Examples 1-5 and Comparative Examples 1-6 were prepared according to the following steps:

[0056] 1) Weigh the components according to the proportions shown in Table 1;

[0057] 2) Add the above materials to the blending kettle, stir at a temperature of 20-50 degrees Celsius and a mixing speed of 100 r / min for 2 hours, cool to room temperature after forming a uniform liquid, filter to remove impurities or particles introduced during the preparation process to obtain the desired product.

[0058] Table 1

[0059]

[0060] Test Case

[0061] The products obtained in the above Examples 1 to 7 and Comparative Examples 1 to 8 were added to commercially available 92# gasoline at a dosage of 1500 ppm to obtain test samples A1-A7 and CA1-CA8, and commercially available 92# gasoline was used as test sample CA9.

[0062] 1. Carbon deposit test: The fuel injection nozzle flow loss test was carried out according to the GB / T 19230.3 test method, and the intake valve and total combustion chamber deposit test was carried out according to the GB / T19230.5 test method. The test results are shown in Table 2.

[0063] 2. Friction performance: HFRR high-frequency reciprocating anti-wear test was also carried out to evaluate its friction performance. The method adopted was SH / T 0765. The wear spot diameter was measured at a temperature of 60°C, a frequency of 50 Hz, and a time of 75 min. The results are shown in Table 2.

[0064] 3. Real vehicle road test: A real vehicle road test is conducted to test the cleaning effect and fuel saving performance of the real vehicle. The average fuel consumption per 100 kilometers is shown in Table 2.

[0065] Table 2

[0066]

[0067] From the results in Table 2, it can be seen that compared with pure gasoline, the addition of the products obtained in Examples 1 to 7 can significantly reduce the carbon deposits and sediments in the fuel injection nozzle, intake valve and combustion chamber, showing that the formula of the present invention has excellent cleaning performance; compared with the product of Example 2 and a single polyetheramine, a single Mannich base, a single polyisobutylene succinate and a polyetheramine / Mannich base / polyisobutylene succinate mixed in pairs as the main agent (Comparative Examples 1 to 6), the fuel injection nozzle flow loss and the total combustion chamber sediment weight of this product are relatively low, and the cleaning effect is better. The anti-wear performance and fuel consumption of this product are lower, showing better fuel saving and wear reduction performance, and the performance is more excellent.

[0068] In addition, compared with Examples 5 to 7, the addition of ashless antiknock agent and ashless friction modifier in Example 3 can make the fuel burn more fully, and to a certain extent, can also effectively improve its cleaning effect, and the performance is better. After adding the friction modifier, the detergent product has a lower wear spot diameter, showing a significant improvement in lubrication and anti-wear performance, which greatly reduces the friction resistance of the corresponding parts of the fuel system, can effectively save fuel, improve driving power, and reduce exhaust emissions. The actual vehicle fuel consumption per 100 kilometers after adding the detergent is reduced to a certain extent, especially after the ashless antiknock agent is compounded with it, the fuel saving effect is more obvious, and the fuel consumption is lower.

[0069] When the amount of the detergent main agent is low (Comparative Example 7), the cleaning effect is poor and the fuel consumption is high; when the amount of the detergent main agent is high (Comparative Example 8), the cleaning effect is poor, especially causing an increase in the deposits in the combustion chamber.

[0070] Figure 1 The combustion chamber and fuel injector cleaning effect pictures of the actual vehicle test of CA9 and A4 using 92# gasoline as the test samples (CA9 on the left and A4 on the right). It can be seen that A4 can effectively clean and remove the carbon deposits and sediments around the piston top of the combustion chamber and the fuel injector, revealing the metal parts, and the cleaning effect is obvious.

[0071] The preferred embodiments of the present invention are described in detail above, but the present invention is not limited thereto. Within the technical concept of the present invention, the technical solution of the present invention can be subjected to a variety of simple modifications, including the combination of various technical features in any other suitable manner, and these simple modifications and combinations should also be regarded as the contents disclosed by the present invention and belong to the protection scope of the present invention.

Claims

1. A fuel detergent composition, characterized in that: Calculated by weight, the composition contains 30-60 parts of a main agent, 0.5-1 parts of a rust inhibitor, 0.3-1 parts of an anti-emulsifier, and 10-65 parts of a solvent; the main agent comprises polyetheramine, Mannich base, and polyisobutylene succinate; The main agent comprises 15-30 parts by weight of polyether amine, 10-20 parts by weight of Mannich base and 5-10 parts by weight of polyisobutylene succinate.

2. The composition according to claim 1, wherein The molecular weight of the polyetheramine is 1000-1400.

3. The composition according to claim 1, wherein The structure of the Mannich base is a mixture of one or both of Structural Formula 1 and Structural Formula 2: Wherein, R1 and R2 are polyisobutylene groups with molecular weight of 800-1300 respectively.

4. The composition according to claim 1, wherein The polyisobutylene succinate is selected from at least one of polyisobutylene succinate pentaerythritol, polyisobutylene succinate ethylene glycol, polyisobutylene succinate sorbitol and polyisobutylene succinate xylitol.

5. The composition according to claim 1, wherein The rust inhibitor is at least one of sulfonate, fatty acid or fatty acid derivative; and / or, the anti-emulsifier is a polyoxypropylene derivative; and / or, the solvent is at least one of D80 or D100.

6. The composition according to claim 1, wherein The composition further comprises an ashless antiknock agent and / or an ashless friction modifier.

7. The composition according to claim 6, wherein The ashless antiknock agent is 5-12 parts by weight, and the ashless friction modifier is 1-9 parts by weight.

8. The composition according to claim 6, wherein The ashless antiknock agent is at least one of ethers, esters or amines, and the ashless friction modifier is at least one of phosphate esters or phosphite compounds.

9. A method for preparing a fuel detergent composition, comprising the following steps: Add the components of the fuel purifier composition according to any one of claims 1 to 8 into a reaction kettle, stir at a temperature of 20-50° C., cool to room temperature after forming a uniform liquid, and obtain the fuel purifier composition after filtering.

10. Use of the fuel detergent composition according to any one of claims 1 to 8 or the composition obtained by the preparation method of the fuel detergent composition according to claim 9 in a vehicle engine.

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