Organosilicon surfactant as well as preparation method and application thereof

Abstract

The invention discloses an organosilicon surfactant and a preparation method and application thereof.Aminopropyl polydimethylsiloxane is used as a modified material, the adhesion capacity of the surfactant is remarkably improved, the surfactant can be more firmly attached to the surface of a leaf, and drifting loss of pesticide liquid is reduced; and hexadecanol is added as a hydrophobic chain segment source, so that the hydrophobic property of the surfactant is effectively enhanced, the spreading effect of the surfactant on the surface of a leaf with a thicker wax layer is more uniform, and the use efficiency of the pesticide is further improved. Besides, epoxy polyether and polyethylene glycol are selected as hydrophilic material sources, so that the surfactant can quickly reduce the wetting angle of liquid drops and increase the contact area between the liquid drops and the surfaces of leaves, the pesticide is more uniformly distributed on the surfaces of crops, and the pesticide effect is improved.

Description

Technical Field

[0001] The invention belongs to the field of organosilicon surfactants, and specifically relates to an organosilicon surfactant and a preparation method and application thereof. Background Art

[0002] As an important chemical material, surfactants are widely used in the fields of pesticides, coatings, cosmetics, textiles, etc. In pesticide applications, surfactants can not only effectively reduce the surface tension of liquids, but also significantly enhance the adhesion, wettability and spreadability of pesticide droplets on hydrophobic leaves. However, currently common surfactants, such as traditional non-ionic, cationic and anionic surfactants, still have certain limitations in instantaneous adhesion, wetting and anti-scouring properties, especially on crop leaves with thick wax layers or hydrophobic surfaces, it is often difficult to achieve ideal results.

[0003] Silicone surfactants excel in reducing interfacial tension, enhancing adhesion and weather resistance due to their unique silicon-oxygen bond structure and low surface energy. However, the traditional surfactants currently used (such as fatty alcohol ethers and sulfonates) have weak adhesion on hydrophobic surfaces, especially on crop leaves with a waxy layer. It is difficult to spread the liquid medicine evenly, and more additives are often needed to achieve the ideal wetting effect. In addition, after rainfall or irrigation in the field, the pesticide droplets of these surfactants are easily washed away, resulting in pesticide waste and environmental pollution.

[0004] In view of this, the present invention is proposed. Summary of the invention

[0005] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art, provide an organosilicon surfactant and a preparation method and application thereof, and solve the problems raised in the above-mentioned background technology.

[0006] In order to solve the above technical problems, the basic concept of the technical solution adopted by the present invention is:

[0007] A method for preparing an organosilicon surfactant comprises the following steps:

[0008] S1: Mix nano-silicon dioxide and trichlorosilane in anhydrous toluene, and generate a product having a silicon-oxygen bond main chain by hydrolysis and condensation reaction①;

[0009] S2: Mix product ① with aminopropyl polydimethylsiloxane, use anhydrous isopropyl alcohol as a reaction medium, add potassium hydroxide as an alkaline catalyst, and react at 60-90° C. for 4-6 hours to obtain a siloxane compound product ② with an amino group introduced therein;

[0010] S3: mixing product ② with hexadecanol, using anhydrous toluene as a reaction medium, adding 2 parts by weight of tetrabutyl titanate as a catalyst, and reacting at 80-100° C. for 6-8 hours to obtain product ③;

[0011] S4: mixing product ③ with epoxy polyether, using anhydrous isopropanol as a reaction medium, adding potassium hydroxide as a catalyst, reacting at 60-90° C. for 4-6 hours to obtain product ④;

[0012] S5: mixing product ④ with a polyether material, using anhydrous toluene as a reaction medium, adding tetrabutyl titanate as a catalyst, and reacting at 80-100° C. for 4-6 hours to obtain product ⑤;

[0013] S6: removing unreacted impurities from the product ⑤ by solvent extraction, then recovering the reaction solvent by vacuum distillation, and removing residual water by a drying process to obtain the final organosilicon surfactant.

[0014] Optionally, the reaction in step S1 is carried out at 50-80° C., and 1 part by weight of toluenesulfonic acid is added as an acidic catalyst to promote the hydrolysis and condensation reactions, and the reaction time is 6-8 hours.

[0015] Optionally, the polyether material in step S5 is one of polyethylene glycol and polypropylene glycol, and has a molecular weight of 200-2000.

[0016] Optionally, in step S1, the weight parts of nano-silicon dioxide, trichlorosilane, and anhydrous toluene are 100 weight parts, 120-150 weight parts, and 300-450 weight parts, respectively.

[0017] Optionally, in step S2, the weight parts of aminopropyl polydimethylsiloxane, potassium hydroxide, and potassium hydroxide are 30-50 weight parts, 200 weight parts, and 0.5-1 weight parts, respectively.

[0018] Optionally, in step S3, the weight parts of hexadecanol and anhydrous toluene are 40-70 weight parts and 200 weight parts respectively.

[0019] Optionally, in step S4, the weight parts of epoxy polyether, anhydrous isopropyl alcohol and potassium hydroxide are 50-100 weight parts, 200 weight parts and 0.5-1.5 weight parts respectively.

[0020] Optionally, in step S5, the weight portions of the polyether material, anhydrous toluene, and tetrabutyl titanate are 60-120 weight portions, 200 weight portions, and 1 weight portion, respectively.

[0021] It should be noted that: when the product ① having a silicon-oxygen bond main chain is generated by hydrolysis and condensation reaction, the steps of the hydrolysis reaction are:

[0022] 300-450 parts by weight of anhydrous toluene is added to the reactor as a solvent to ensure that the system is in an anhydrous environment to prevent external moisture from affecting the reaction process. Anhydrous toluene provides a uniform reaction medium and dilutes the reactants to reduce the risk of excessive local reactions.

[0023] Slowly add 120-150 parts by weight of trichlorosilane to the reactor and evenly disperse it in toluene under stirring. Trichlorosilane is the core raw material of the hydrolysis reaction and has high activity. It needs to be added gradually to avoid excessive local reaction.

[0024] 100 parts by weight of nano-scale silicon dioxide (containing 1%-3% bound water) is gradually added to a mixture of toluene and trichlorosilane. The bound water on the surface of silicon dioxide acts as a water source and undergoes a hydrolysis reaction with trichlorosilane to generate silanol (Si-OH) and hydrogen chloride (HCl). The reaction formula is as follows:

[0025] SiHCl3+H2O→Si-OH+3HCl The system temperature is maintained at 50-80°C by adjusting the temperature of the reactor. This temperature range helps the hydrolysis reaction proceed smoothly, prevents the formation of by-products (such as silica gel) caused by excessively high temperatures, and ensures that the bound water on the surface of silica fully reacts with trichlorosilane.

[0026] Hydrogen chloride (HCl) gas is released during the hydrolysis reaction. HCl can be promptly discharged from the reaction system by nitrogen purging or by connecting a gas capture device to avoid the impact of gas accumulation on the reaction environment.

[0027] Maintain strong stirring throughout the reaction process to ensure that trichlorosilane is in full contact with the surface bound water of silicon dioxide to form a uniform reaction system and avoid incomplete local reaction.

[0028] As the reaction time continues, trichlorosilane gradually converts into silanol (Si-OH). After the hydrolysis reaction is completed, the main components in the system are silanol intermediates and toluene solvent, which provide precursors for the subsequent condensation reaction.

[0029] The water required for hydrolysis comes from the bound water on the surface of nano-silicon dioxide, and the content of bound water on the surface of nano-silicon dioxide is 1%-3% of the total weight of the particles.

[0030] The steps of the condensation reaction are:

[0031] In the hydrolysis reaction, trichlorosilane reacts with the water bound on the surface of silicon dioxide to form a silanol (Si-OH) intermediate and release hydrogen chloride (HCl). The formation of silanol provides the reactant basis for the subsequent condensation reaction.

[0032] In the condensation reaction, silanol molecules form silicon-oxygen bonds (Si-O-Si) through condensation reaction between hydroxyl groups (-OH), while releasing water as a by-product. The chemical reaction formula is 2Si-OH→Si-O-Si+H2O, and the reaction gradually forms a silicon-oxygen bond main chain structure, accompanied by heat release.

[0033] By adjusting the temperature of the reactor, the reaction system is controlled at 60-80°C to ensure the smooth progress of the condensation reaction and avoid excessively high temperatures that lead to excessively violent reactions or accumulation of by-products. At the same time, the stirring device is used to maintain the uniform distribution of silanol molecules in the solvent and promote the completeness of the reaction.

[0034] As the condensation reaction proceeds, byproduct water gradually accumulates in the reaction system. The water concentration is diluted with anhydrous toluene, and the water in the system is removed in time by nitrogen purging or vacuum distillation to prevent it from inhibiting further condensation reaction.

[0035] 1 part by weight of p-toluenesulfonic acid is added as an acidic catalyst to catalyze the condensation reaction of silanol molecules. The catalyst protonates the hydroxyl group (-OH) to reduce the activation energy of the reaction, thereby accelerating the condensation process between silanols to form silicon-oxygen bonds.

[0036] As the condensation reaction proceeds, the number of silicon-oxygen bonds (Si-O-Si) gradually increases, forming a linear or network siloxane main chain structure. The final product is a liquid or viscous siloxane compound.

[0037] After the condensation reaction is completed, a small amount of insoluble impurities in the system are removed by filtration, and then anhydrous toluene is recovered as a solvent by vacuum distillation, and the product is further dried to obtain the final siloxane compound containing a silicon-oxygen bond main chain (product ①).

[0038] In a second aspect, the present invention provides an organosilicon surfactant, which is prepared by the above-mentioned preparation method.

[0039] In a third aspect, the present invention provides the use of the above-mentioned organosilicon surfactant in pesticides.

[0040] After adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art. Of course, any product implementing the present invention does not necessarily need to achieve all the advantages described below at the same time:

[0041] 1. The present invention uses aminopropyl polydimethylsiloxane as a modified material, which significantly improves the adhesion ability of the surfactant, so that it can be more firmly attached to the leaf surface and reduce the drift loss of the pesticide solution. In addition, by adding hexadecanol as a source of hydrophobic segments, the hydrophobic properties of the surfactant are effectively enhanced, so that it spreads more evenly on the leaf surface with a thick wax layer, further improving the use efficiency of the pesticide.

[0042] 2. The present invention selects epoxy polyether and polyethylene glycol as the source of hydrophilic materials, so that the surfactant of the present invention can quickly reduce the wetting angle of the droplets and increase the contact area between the droplets and the leaf surface, thereby making the pesticide more evenly distributed on the crop surface and improving the efficacy.

[0043] 3. In the preparation process of the present invention, anhydrous toluene and anhydrous isopropanol are selected as reaction media. These solvents have excellent solubility and stability, can ensure the smooth progress of the reaction process, and are easy to recycle and reuse through reduced pressure distillation, thereby reducing production costs.

[0044] The specific embodiments of the present invention are described in further detail below. DETAILED DESCRIPTION

[0045] The present invention will now be described in further detail.

[0046] Various exemplary embodiments of the present invention will now be described in detail. This detailed description should not be considered as limiting the present invention, but should be understood as a more detailed description of certain aspects, features, and embodiments of the present invention.

[0047] It should be understood that the terms described in the present invention are only for describing special embodiments and are not intended to limit the present invention. In addition, for the numerical range in the present invention, it should be understood that each intermediate value between the upper and lower limits of the scope is also specifically disclosed. Each smaller range between the intermediate value in any stated value or stated range and any other stated value or intermediate value in the described range is also included in the present invention. The upper and lower limits of these smaller ranges can be independently included or excluded in the scope.

[0048] Unless otherwise indicated, all technical and scientific terms used herein have the same meanings as those generally understood by those skilled in the art. Although the present invention describes only preferred methods and materials, any methods and materials similar or equivalent to those described herein may also be used in the implementation or testing of the present invention. All documents mentioned in this specification are incorporated by reference to disclose and describe the methods and / or materials associated with the documents. In the event of a conflict with any incorporated document, the content of this specification shall prevail.

[0049] It will be apparent to those skilled in the art that various modifications and variations may be made to the specific embodiments of the present invention description without departing from the scope or spirit of the present invention. Other embodiments derived from the present invention description will be apparent to those skilled in the art. The present application description and examples are exemplary only.

[0050] The words “include,” “including,” “have,” “contain,” etc. used in this document are open-ended terms, meaning including but not limited to.

[0051] In this embodiment, a method for preparing an organosilicon surfactant is provided, comprising the following steps:

[0052] S1: Mix nano-silicon dioxide and trichlorosilane in anhydrous toluene, and generate a product having a silicon-oxygen bond main chain by hydrolysis and condensation reaction①;

[0053] S2: Mix product ① with aminopropyl polydimethylsiloxane, use anhydrous isopropyl alcohol as a reaction medium, add potassium hydroxide as an alkaline catalyst, and react at 60-90° C. for 4-6 hours to obtain a siloxane compound product ② with an amino group introduced therein;

[0054] S3: mixing product ② with hexadecanol, using anhydrous toluene as a reaction medium, adding 2 parts by weight of tetrabutyl titanate as a catalyst, and reacting at 80-100° C. for 6-8 hours to obtain product ③;

[0055] S4: mixing product ③ with epoxy polyether, using anhydrous isopropanol as a reaction medium, adding potassium hydroxide as a catalyst, reacting at 60-90° C. for 4-6 hours to obtain product ④;

[0056] S5: mixing product ④ with a polyether material, using anhydrous toluene as a reaction medium, adding tetrabutyl titanate as a catalyst, and reacting at 80-100° C. for 4-6 hours to obtain product ⑤;

[0057] S6: removing unreacted impurities from the product ⑤ by solvent extraction, then recovering the reaction solvent by vacuum distillation, and removing residual water by a drying process to obtain the final organosilicon surfactant.

[0058] In this embodiment, the reaction in step S1 is carried out at 50-80° C., and 1 part by weight of toluenesulfonic acid is added as an acidic catalyst to promote the hydrolysis and condensation reactions. The reaction time is 6-8 hours.

[0059] In this embodiment, the polyether material in step S5 is one of polyethylene glycol and polypropylene glycol, and has a molecular weight of 200-2000.

[0060] In this embodiment, in step S1, the weight parts of nano-silicon dioxide, trichlorosilane, and anhydrous toluene are 100 weight parts, 120-150 weight parts, and 300-450 weight parts, respectively.

[0061] In this embodiment, in step S2, the weight parts of aminopropyl polydimethylsiloxane, potassium hydroxide, and potassium hydroxide are 30-50 weight parts, 200 weight parts, and 0.5-1 weight parts, respectively.

[0062] In this embodiment, in step S3, the weight parts of hexadecanol and anhydrous toluene are 40-70 weight parts and 200 weight parts respectively.

[0063] In the present embodiment, in step S4, the weight parts of epoxy polyether, anhydrous isopropyl alcohol, and potassium hydroxide are 50-100 weight parts, 200 weight parts, and 0.5-1.5 weight parts, respectively.

[0064] In this embodiment, the weight parts of the polyether material, anhydrous toluene, and tetrabutyl titanate in step S5 are 60-120 weight parts, 200 weight parts, and 1 weight part, respectively.

[0065] The molecular weight of the epoxy polyether is 500.

[0066] It should be noted that all raw materials in the examples of the present invention were obtained through commercial sources.

[0067] Embodiment 1: In this embodiment, a method for preparing an organosilicon surfactant is provided, comprising the following steps:

[0068] 100 parts by weight of nano-silicon dioxide (surface bound water content of 2%) and 130 parts by weight of trichlorosilane are mixed in 350 parts by weight of anhydrous toluene, 1 part by weight of p-toluenesulfonic acid is added to the reaction kettle as an acid catalyst, the reaction temperature is controlled to 70°C, and the reaction is stirred for 7 hours. The reaction realizes the hydrolysis and condensation reaction of trichlorosilane through the bound water on the surface of silicon dioxide to generate a siloxane compound (product ①) containing a silicon-oxygen bond (Si-O-Si) main chain;

[0069] The product ① is mixed with 40 parts by weight of aminopropyl polydimethylsiloxane, and 0.8 parts by weight of potassium hydroxide is added as a basic catalyst in 200 parts by weight of anhydrous isopropanol as a reaction medium. The reaction temperature is controlled to be 80°C, and the reaction is stirred for 5 hours. After the reaction is completed, a siloxane compound (product ②) with an amino group introduced is obtained;

[0070] The product ② was mixed with 50 parts by weight of hexadecanol, and 200 parts by weight of anhydrous toluene was used as a reaction medium, and 2 parts by weight of tetrabutyl titanate was added as a catalyst, and the reaction temperature was controlled to be 90°C, and the reaction was stirred for 6 hours. After the reaction was completed, a siloxane compound grafted with a hexadecanol hydrophobic segment was obtained (product ③);

[0071] The product ③ was mixed with 80 parts by weight of epoxy polyether (molecular weight of 500), and 1 part by weight of potassium hydroxide was added as a catalyst in 200 parts by weight of anhydrous isopropanol as a reaction medium. The reaction temperature was controlled at 70°C and stirred for 5 hours. After the reaction was completed, a siloxane compound (product ④) with epoxy groups introduced was obtained;

[0072] The product ④ was mixed with 100 parts by weight of polyethylene glycol (molecular weight 1000), and 1 part by weight of tetrabutyl titanate was added as a catalyst in 200 parts by weight of anhydrous toluene as a reaction medium, and the reaction temperature was controlled to 90°C, and the reaction was stirred for 6 hours. After the reaction was completed, a siloxane compound (product ⑤) with hydrophilic / hydrophobic balance properties was obtained;

[0073] The product ⑤ is subjected to solvent extraction to remove unreacted impurities, and then toluene and isopropanol are recovered by vacuum distillation. Finally, residual moisture is removed by vacuum drying to obtain a purified organosilicon surfactant.

[0074] Example 2: In this example, a preparation method of an organosilicon surfactant is provided.

[0075] The preparation method is basically the same as that of Example 1, except that the weight parts of aminopropyl polydimethylsiloxane in step S2 is replaced from 40 weight parts to 45 weight parts;

[0076] Example 3: In this example, a preparation method of an organosilicon surfactant is provided.

[0077] The preparation method is basically the same as that of Example 1, except that the weight of hexadecanol in step S3 is replaced from 50 weight parts to 60 weight parts;

[0078] Example 4: In this example, a preparation method of an organosilicon surfactant is provided.

[0079] The preparation method is basically the same as that of Example 1, except that the weight of the epoxy polyether in step S4 is replaced from 80 weight parts to 70 weight parts;

[0080] Example 5: In this example, a preparation method of an organosilicon surfactant is provided.

[0081] The preparation method is basically the same as that of Example 1, except that the weight parts of polyethylene glycol in step S5 are replaced from 100 weight parts to 80 weight parts.

[0082] Test example: Application of the above-mentioned organosilicon surfactants in pesticides

[0083] Weigh 50 grams of 41% glyphosate isopropylamine salt solution and pour it into a container containing 950 grams of clean water to prepare a 5% glyphosate pesticide solution. Prepare 6 portions of the prepared glyphosate pesticide solution, then add 1 gram of the surfactant of Examples 1-5 (accounting for 0.1% of the total weight of the pesticide solution) to 5 portions of the pesticide solution, respectively, and leave one pesticide without the surfactant. Use a magnetic stirrer to stir for 5 minutes to ensure that the surfactant and the pesticide solution are evenly mixed to prepare the final pesticide working solution.

[0084] Put the prepared pesticide working solution into a handheld sprayer (1 liter capacity). Spray the weeds in the field under rainless weather conditions with wind speeds below 2 meters per second. Keep the nozzle 20-30 cm away from the weed surface during spraying, spray the pesticide solution evenly, and ensure that the surface of the weed leaves is completely covered with the solution. The application area is about 50 square meters.

[0085] Interfacial tension determination method

[0086] Use an interfacial tension meter (such as K100 interfacial tension meter) to measure the interfacial tension of the pesticide working solution at 25° C. Each group of working solutions is measured 3 times, and the average value is taken as the result.

[0087] 2. Method for determining the loss rate of drug solution

[0088] Experimental method: Take 5 parts of pesticide working solution containing surfactant and 1 part of control pesticide solution, and spray them evenly on the simulated field plots planted with weeds. Each field plot has an area of ​​1 square meter and the spraying amount is 200 ml. Let it stand for 30 minutes after spraying. Use a simulated rainfall device to simulate rainfall on the field. The rainfall intensity is set to 10 mm / hour and the rainfall time is 10 minutes. Collect the liquid lost from the surface of the weed leaves and calculate the amount of liquid lost by weighing. The expression is:

[0089]

[0090] 3. Determination of weed yellowing rate

[0091] After spraying the pesticide working solution on each field, regularly observe the yellowing of weeds (such as crabgrass and foxtail grass). Count the number of yellowed weeds on the 7th day after spraying. The yellowing rate is calculated based on the total number of weeds in the field and the number of yellowed weeds. Its expression is:

[0092]

[0093]

[0094] As can be seen from the above table, the pesticide solution containing surfactant significantly reduced the interfacial tension from 28.0 mN / m in the control group to 18.0-19.2 mN / m, thereby enhancing the wetting performance of the pesticide solution on the hydrophobic surface.

[0095] In addition, the loss rate of the group containing surfactant was significantly lower than that of the control group (35.0%), with the lowest being 5.0% in Example 1, indicating that the surfactant enhanced the adhesion ability of the drug solution on the waxy leaf surface.

[0096] Finally, the yellowing rate of the group containing surfactant reached 93.0%-95.0%, which was significantly higher than 80.0% of the control group, indicating that the surfactant of the present invention improved the weed control effect of glyphosate.

[0097] The present invention is not limited to the above-mentioned embodiments. Anyone should be aware that any structural changes made under the enlightenment of the present invention, and any technical solutions that are the same or similar to the present invention, fall within the protection scope of the present invention. The technology, shape, and structural parts not described in detail in the present invention are all well-known technologies.

Claims

1. A method for preparing an organosilicon surfactant, characterized in that: The following steps are involved: S1: Mix nano-silicon dioxide and trichlorosilane in anhydrous toluene, and generate a product having a silicon-oxygen bond main chain by hydrolysis and condensation reaction①; S2: Mix product ① with aminopropyl polydimethylsiloxane, use anhydrous isopropyl alcohol as a reaction medium, add potassium hydroxide as an alkaline catalyst, and react at 60-90° C. for 4-6 hours to obtain a siloxane compound product ② with an amino group introduced therein; S3: mixing product ② with hexadecanol, using anhydrous toluene as a reaction medium, adding 2 parts by weight of tetrabutyl titanate as a catalyst, and reacting at 80-100° C. for 6-8 hours to obtain product ③; S4: mixing product ③ with epoxy polyether, using anhydrous isopropanol as a reaction medium, adding potassium hydroxide as a catalyst, reacting at 60-90° C. for 4-6 hours to obtain product ④; S5: mixing product ④ with a polyether material, using anhydrous toluene as a reaction medium, adding tetrabutyl titanate as a catalyst, and reacting at 80-100° C. for 4-6 hours to obtain product ⑤; S6: removing unreacted impurities from the product ⑤ by solvent extraction, then recovering the reaction solvent by vacuum distillation, and removing residual water by a drying process to obtain the final organosilicon surfactant.

2. The method for preparing an organosilicon surfactant according to claim 1, characterized in that: The reaction in step S1 is carried out at 50-80° C., and 1 part by weight of toluenesulfonic acid is added as an acidic catalyst to promote the hydrolysis and condensation reactions. The reaction time is 6-8 hours.

3. The method for preparing an organosilicon surfactant according to claim 1, characterized in that: In step S5, the polyether material is one of polyethylene glycol and polypropylene glycol, and has a molecular weight of 200-2000.

4. The method for preparing an organosilicon surfactant according to claim 1, characterized in that: In step S1, the weight parts of nano-silicon dioxide, trichlorosilane and anhydrous toluene are 100 weight parts, 120-150 weight parts and 300-450 weight parts respectively.

5. The method for preparing an organosilicon surfactant according to claim 1, characterized in that: In step S2, the weight parts of aminopropyl polydimethylsiloxane, potassium hydroxide, and potassium hydroxide are 30-50 weight parts, 200 weight parts, and 0.5-1 weight parts, respectively.

6. The method for preparing an organosilicon surfactant according to claim 1, characterized in that: In step S3, the weight parts of hexadecanol and anhydrous toluene are 40-70 weight parts and 200 weight parts respectively.

7. The method for preparing an organosilicon surfactant according to claim 1, characterized in that: In step S4, the weight parts of epoxy polyether, anhydrous isopropyl alcohol and potassium hydroxide are 50-100 weight parts, 200 weight parts and 0.5-1.5 weight parts respectively.

8. The method for preparing an organosilicon surfactant according to claim 1, characterized in that: In step S5, the weight portions of the polyether material, anhydrous toluene, and tetrabutyl titanate are 60-120 weight portions, 200 weight portions, and 1 weight portion, respectively.

9. An organosilicon surfactant, characterized in that: The method is prepared by the method according to any one of claims 1 to 8.

10. Use of the organosilicon surfactant according to claim 9 in pesticides.

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