Pesticide suspending agent, preparation method thereof and pesticide with pesticide suspending agent

Abstract

The invention relates to the technical field of pesticide suspending agents, and particularly provides a pesticide suspending agent, a preparation method thereof and a pesticide with the pesticide suspending agent. The preparation method of the pesticide suspending agent comprises the following steps: mixing the active compound, the oily solvent, the reaction monomer and the emulsifier to obtain liquid A; uniformly mixing inorganic salt and water to obtain liquid B; adding the liquid A into the liquid B, and dispersing to obtain an aqueous solution dispersion system; and adding an initiator into the aqueous solution dispersion system, mixing and reacting to obtain the pesticide suspending agent. The preparation method of the pesticide suspending agent is simple in process and beneficial to industrial production, and the storage stability and the pesticide effect of the pesticide suspending agent prepared through the preparation method can be improved.

Description

Technical Field

[0001] The present invention relates to the technical field of pesticide suspension concentrates, and particularly relates to a pesticide suspension concentrate, a preparation method thereof, and a pesticide having the same. Background Art

[0002] Dinotefuran belongs to the third-generation neonicotinoid insecticides. Its structure contains a unique "furan group" different from other neonicotinoid insecticides. It has the characteristics of contact toxicity, stomach toxicity, strong root systemic absorption, broad insecticidal spectrum, high efficiency, etc., and has a special effect on piercing-sucking mouthpart pests, and shows high insecticidal activity at very low doses. At present, it is mainly used to control aphids, leafhoppers, planthoppers, thrips, whiteflies, etc. on various crops such as wheat, rice, cotton, vegetables, fruit trees, and tobacco leaves.

[0003] Aqueous pesticide suspension concentrate refers to a pesticide formulation prepared by wet grinding and ultrafine pulverization of the technical material and auxiliaries with water as the dispersion medium. It is required that the technical material used is slightly soluble or insoluble in water. This formulation has less environmental pollution during processing and use, has no special requirements for water quality, and has the advantages of saving organic solvents, reducing environmental pollution, being relatively safe for humans and livestock, high efficacy, and low cost. Therefore, it is one of the fastest-growing pesticide formulations in recent years.

[0004] Dinotefuran has a relatively high solubility in water. If it is prepared into a suspension concentrate with a relatively high content by traditional methods, problems such as crystal precipitation and pasting are likely to occur during storage. Therefore, in the industry, it is mostly prepared into other formulations. The suspension concentrate itself is a thermodynamically unstable system. Once soluble substances of inorganic salts are added to traditional suspension concentrates, phenomena such as pseudoplasticity and pasting are likely to occur. Therefore, studying a new type of pesticide suspension concentrate containing dinotefuran can improve the storage stability of this type of suspension concentrate and enhance the efficacy to a certain extent. Summary of the Invention

[0005] In view of this, the present invention aims to provide a preparation method of a pesticide suspension concentrate, so as to improve the storage stability and efficacy of the pesticide suspension concentrate.

[0006] To achieve the above object, the technical solution of the present invention is realized as follows:

[0007] A preparation method of a pesticide suspension concentrate, the preparation method comprising:

[0008] Mixing the technical material, an oily solvent, a reactive monomer, and an emulsifier to obtain liquid A;

[0009] Mixing the inorganic salt and water evenly to obtain liquid B;

[0010] Adding the liquid A to the liquid B and dispersing to obtain an aqueous solution dispersion system;

[0011] An initiator is added to the aqueous solution dispersion system, and after mixing, a reaction is carried out to obtain the pesticide suspension concentrate.

[0012] Furthermore, the technical material is dinotefuran; and / or,

[0013] the oily solvent is dimethylacetamide; and / or,

[0014] the reaction monomer contains a water-soluble functional group, and the reaction monomer includes sodium p-styrenesulfonate and maleic anhydride; and / or,

[0015] the emulsifier is calcium dodecylbenzenesulfonate; and / or,

[0016] the inorganic salt is selected from one or a mixture of two of sodium chloride and ammonium sulfate; and / or,

[0017] the initiator is selected from any one or a mixture of several of ammonium persulfate, sodium persulfate, and potassium persulfate.

[0018] Furthermore, the step of mixing the technical material, the oily solvent, the reaction monomer, and the emulsifier to obtain liquid A includes:

[0019] mixing the technical material and the oily solvent in a preset ratio;

[0020] In the mixed technical material and oily solvent, the reaction monomer and the emulsifier are sequentially added, and after mixing evenly, liquid A is obtained.

[0021] Furthermore, the preset ratio is 1:1 to 1:2.

[0022] Furthermore, in the sequentially added reaction monomer and emulsifier, the mass of the reaction monomer is 20% to 50% of the mass of the technical material, and the mass of the emulsifier is 5% to 10% of the mass of the technical material.

[0023] Furthermore, the step of mixing the inorganic salt and water evenly to obtain liquid B includes mixing the inorganic salt and water in a ratio of 1:10 to 1:8 evenly to obtain liquid B.

[0024] Furthermore, the step of adding the initiator to the aqueous solution dispersion system, mixing, and reacting to obtain the pesticide suspension concentrate includes:

[0025] In the aqueous solution dispersion system, while stirring, a preset mass of the initiator is added, and after mixing evenly, a mixed liquid is obtained;

[0026] The mixed liquid is heated to a preset temperature and reacted for a preset time to obtain the pesticide suspension concentrate.

[0027] Further, the preset quality is 0.1% - 1% of the total mass of the aqueous solution dispersion system; and / or,

[0028] the preset temperature is 35°C - 45°C; and / or,

[0029] the preset time is 18h - 24h.

[0030] Compared with the prior art, the present invention has the following advantages:

[0031] In the preparation method of the pesticide suspension concentrate of the present invention, by adding an emulsifier, the technical drug oil phase can be better emulsified in water, and by adding a reaction monomer, hydrophilic modification is carried out on the surface of the technical drug by the addition reaction between carbon-carbon double bonds. In the subsequent steps, by adding an inorganic salt, the solubility of the inorganic salt in water is much greater than that of the technical drug. When the concentration of the inorganic salt is high enough, the technical drug is difficult to dissolve in water due to the principle of dissolution equilibrium.

[0032] Meanwhile, by adding an initiator, free radicals are generated and decomposed in the aqueous solution, thereby initiating the polymerization reaction of the reaction monomer. This reaction coats the surface of the technical drug with a polymer and has hydrophilic functional groups. Thus, the technical drug will not dissolve with the change of temperature in water, and the hydrophilic functional groups also provide a strong electrostatic repulsion to prevent the technical drug from agglomerating and flocculating, thereby improving the storage stability and temperature resistance stability of the pesticide suspension concentrate, and the whole preparation process is simple to operate, which is beneficial to industrial production.

[0033] The present invention also provides a pesticide suspension concentrate prepared by the above preparation method.

[0034] The pesticide suspension concentrate of the present invention, prepared by the above preparation method, improves the storage stability and temperature resistance stability of the pesticide suspension concentrate, and can reduce the problems of crystallization and pasting during the production and transportation of the pesticide suspension concentrate.

[0035] In addition, the present invention also provides a pesticide, which at least includes the above pesticide suspension concentrate. Detailed Embodiments

[0036] It should be noted that, without conflict, the embodiments in the present invention and the features in the embodiments can be combined with each other.

[0037] For those conditions not specified in the present invention, they can be carried out according to the conventional conditions or the conditions recommended by the manufacturer of the equipment used. For the reagents or instruments whose manufacturers are not specified, they can all be obtained by purchasing commercially available conventional products, and for the technical means or process methods involved, if the specific conditions are not written, they can be carried out according to the existing methods in the field.

[0038] This embodiment relates to a preparation method of a pesticide suspension concentrate, which can improve the storage stability and efficacy of the pesticide suspension concentrate.

[0039] In terms of the overall design, the preparation method of the pesticide suspension concentrate in this embodiment includes the following steps:

[0040] Step S1: Mix the technical material, oily solvent, reactive monomer and emulsifier to obtain liquid A.

[0041] Regarding the materials used in the above step S1, specifically, the technical material in the above step S1, preferably, for example, can be dinotefuran. As the technical material of the pesticide suspension concentrate, dinotefuran mainly exerts its insecticidal effect by acting on the insect nerve transmission system, causing paralysis of pests. At the same time, dinotefuran also acts as a nicotinic acetylcholine receptor (nAChR) agonist, making insects extremely excited, suffering from systemic convulsions and paralysis and dying. Dinotefuran not only has contact and stomach toxicity effects, but also has excellent systemic and penetration effects, can be rapidly absorbed by the roots and stems and leaves of plants, and is conducted upward. Dinotefuran belongs to the third generation of neonicotinoid insecticides.

[0042] The oily solvent in the above step S1, preferably, for example, can be dimethylacetamide. Dimethylacetamide, also known as N,N-dimethylacetamide, has good thermal stability and solubility, and can activate compound molecules, so it is widely used as a solvent and catalyst, and is used as an oily solvent in the preparation method of this example.

[0043] The reactive monomer in the above step S1, preferably, for example, can be a reactive monomer containing a water-soluble functional group. Specifically, in implementation, the reactive monomer, preferably, for example, can include sodium p-styrenesulfonate and maleic anhydride. As an exemplary implementation form, the ratio of the above sodium p-styrenesulfonate and maleic anhydride, preferably, for example, can be 1:1.

[0044] Among them, sodium p-styrenesulfonate is a polymer monomer with unique functions, showing excellent heat resistance, not decomposing below 300 °C, and having high polymerizability, and can achieve free radical polymerization by using general initiators. At the same time, maleic anhydride is the anhydride of maleic acid, and like sodium p-styrenesulfonate, both contain hydrophilic functional groups, which can provide electrostatic repulsion to prevent the aggregation and flocculation of the technical material. The combined use of the two has good dispersion stability for the pesticide suspension concentrate.

[0045] The emulsifier in the above step S1, preferably, for example, can be calcium dodecylbenzenesulfonate. Calcium dodecylbenzenesulfonate, also known as pesticide emulsifier 500#, is insoluble in water, has good surface activity properties, can form a stable emulsification and dispersion system in the solution, and has good wettability, can form a thin film on the solid surface, improve the lubricity and water resistance of the object, and is mainly used as a pesticide emulsifier and for preparing a mixed pesticide emulsifier. In the preparation method of this embodiment, it is used as an emulsifier to make liquid A form a stable emulsification system.

[0046] It should be noted that for the above step S1, after mixing the technical drug, oily solvent, reaction monomer and emulsifier to obtain liquid A, as a preferred implementation form, for example, the technical drug and the oily solvent can be mixed in a preset ratio, and in the mixed technical drug and oily solvent, the reaction monomer and the emulsifier are added in sequence, and after mixing evenly, liquid A is obtained.

[0047] Among them, the above preset ratio is preferably, for example, 1:1 to 1:2.

[0048] In addition, among the reaction monomer and the emulsifier added in sequence above, the mass of the reaction monomer, preferably, for example, can be 20% - 50% of the mass of the technical drug, and the mass of the emulsifier, preferably, for example, can be 5% - 10% of the mass of the technical drug.

[0049] Step S2: Mix the inorganic salt and water evenly to obtain liquid B.

[0050] The inorganic salt in the above step S2, preferably, for example, can be a mixture of one or both of sodium chloride and ammonium sulfate. Among them, sodium chloride is easily soluble in water, and ammonium sulfate has excellent solubility and can form a high-salt environment. In the preparation method of this embodiment, it is used to make solution B. The solubility of both in water is much greater than that of dinotefuran. When the concentration of both is high enough, based on the principle of solubility equilibrium, dinotefuran is difficult to dissolve in water, increasing the storage stability of the pesticide suspending agent in this embodiment.

[0051] It should be noted that for the above step S2, when mixing the inorganic salt and water evenly to obtain liquid B, as a preferred implementation form, for example, the inorganic salt and water can be mixed evenly in a ratio of 1:10 to 1:8 to obtain liquid B.

[0052] Step S3: Add the liquid A to the liquid B and disperse it to obtain an aqueous solution dispersion system.

[0053] For the dispersion in the above step S3 of adding liquid A to liquid B and dispersing it, as a preferred implementation form, for example, a high-speed disperser, ultrasonic treatment or high-pressure microfluidics can be used to disperse liquid A to the nanoscale.

[0054] Step S4: Add an initiator to the aqueous solution dispersion system, mix and react to obtain the pesticide suspension concentrate.

[0055] For the initiator in the above step S4, preferably, for example, it can be any one or a mixture of several of ammonium persulfate, sodium persulfate, and potassium persulfate.

[0056] Among them, ammonium persulfate, also known as diammonium persulfate, is an ammonium salt with strong oxidizing and corrosive properties and can be used as an initiator for polymerization reactions. Sodium persulfate, also known as sodium peroxydisulfate, is an inorganic compound mainly used as a bleaching agent, oxidizing agent, and emulsion polymerization promoter. Potassium persulfate has strong oxidizing properties and is commonly used as a bleaching agent, oxidizing agent, and can also be used as an initiator for polymerization reactions.

[0057] Based on the above introduction of ammonium persulfate, sodium persulfate, and potassium persulfate, any one or a mixture of several of them is selected as the initiator in the preparation method of this embodiment. In this step, free radicals are generated by the decomposition of the initiator in the aqueous solution, thereby initiating the polymerization reaction of the reaction monomers. The surface of the technical material after the reaction will be coated with a polymer, so that the technical material will not dissolve in water with the change of temperature, improving the temperature resistance stability of the pesticide suspension concentrate in this embodiment.

[0058] For the above step S4, adding an initiator to the aqueous solution dispersion system, mixing and reacting to obtain the pesticide suspension concentrate. As a preferred implementation form, for example, in the aqueous solution dispersion system, a preset mass of the initiator is added while stirring, and after mixing evenly, a mixed liquid is obtained. The mixed liquid is heated to a preset temperature and reacted for a preset time to obtain the pesticide suspension concentrate.

[0059] Among them, the above-mentioned preset mass is preferably, for example, 0.1% - 1% of the total mass of the aqueous solution dispersion system; the above-mentioned preset temperature is preferably, for example, 35°C - 45°C; the above-mentioned preset time is preferably, for example, 18h - 24h.

[0060] In addition, in the above step S4, the reaction occurring after mixing is a polymerization reaction of free radicals generated by the decomposition of the initiator in the aqueous solution with the reaction monomers. This reaction causes the surface of the technical material to be wrapped with a polymer, thereby reducing the solubility of the technical material in water and improving the suspension rate of the pesticide suspension concentrate.

[0061] The preparation method of the pesticide suspension concentrate in this embodiment can improve the storage stability and temperature resistance stability of the pesticide suspension concentrate, and the entire preparation process is simple to operate, which is beneficial to industrial production.

[0062] This embodiment also relates to a pesticide suspension concentrate prepared by the above preparation method of the pesticide suspension concentrate.

[0063] The pesticide suspending agent of this embodiment is prepared by the above preparation method, which improves the storage stability and temperature resistance stability of the pesticide suspending agent, and can reduce the problems of crystal precipitation and pasting during the production and transportation of the pesticide suspending agent.

[0064] In addition, this embodiment also relates to a pesticide, and the pesticide at least includes the above pesticide suspending agent.

[0065] In addition, based on the above overall introduction, for the pesticide suspending agent of this embodiment, in specific implementation, the following preparation examples can be referred to.

[0066] Example 1

[0067] This Example 1 is for preparing the above pesticide suspending agent, specifically a 10% dinotefuran nano-suspending agent, and its preparation steps are as follows:

[0068] Step S1: Weigh 10 kg of dinotefuran technical material and 20 kg of dimethylacetamide respectively and mix them evenly. Then, add 1 kg of sodium p-styrenesulfonate, 1 kg of maleic anhydride, and 1 kg of calcium dodecylbenzenesulfonate to the mixed solution in sequence. After mixing evenly, liquid A is obtained.

[0069] Step S2: Weigh 6.5 kg of ammonium sulfate and 60 kg of water respectively and mix them evenly to obtain liquid B.

[0070] Step S3: Slowly add liquid A to liquid B, and disperse the oil phase to the nano level by shear ultrasonic method to obtain an aqueous solution dispersion system.

[0071] Step S4: On the premise of starting stirring, add 0.5 kg of ammonium persulfate to the aqueous solution dispersion system, mix evenly, adjust the temperature to 40 °C, and react for 18 h. After the reaction is completed, 10% dinotefuran nano-suspending agent can be obtained.

[0072] Example 2

[0073] This Example 2 is for preparing the above pesticide suspending agent, specifically a 20% dinotefuran nano-suspending agent, and its preparation steps are as follows:

[0074] Step S1: Weigh 20 kg of dinotefuran technical material and 20 kg of dimethylacetamide respectively and mix them evenly. Then, add 2.5 kg of sodium p-styrenesulfonate, 2.5 kg of maleic anhydride, and 2 kg of calcium dodecylbenzenesulfonate to the mixed solution in sequence. After mixing evenly, liquid A is obtained;

[0075] Step S2: Weigh 4.8 kg of ammonium sulfate and 43 kg of water respectively and mix them evenly to obtain liquid B;

[0076] Step S3: Slowly add liquid A to liquid B, and disperse the oil phase to the nano level by shear ultrasonic method to prepare an aqueous solution dispersion system;

[0077] Step S4: Under the premise of starting stirring, add 0.8 kg of potassium persulfate to the aqueous solution dispersion system. After mixing evenly, adjust the temperature to 40 °C and react for 24 h. After the reaction is completed, 20% dinotefuran nano-suspension can be obtained.

[0078] Comparative Example 1

[0079] This Comparative Example 1 is for preparing a traditional 10% dinotefuran suspension. The specific preparation steps are as follows:

[0080] Weigh 10 kg of dinotefuran technical, 8 kg of polycarboxylate dispersant, 5 kg of antifreeze ethylene glycol, 0.2 kg of thickener xanthan gum, 10 kg of ammonium sulfate, 0.3 kg of defoamer and 66.5 kg of deionized water respectively, stir and mix them evenly to obtain a mixed solution. After ultrasonic shearing the mixed solution for 20 minutes, transfer it to a horizontal sand mill and grind it until the particle size D90 ≤ 5 microns, then the traditional 10% dinotefuran suspension is obtained.

[0081] Comparative Example 2

[0082] This Comparative Example 2 is for preparing a traditional 20% dinotefuran suspension. The specific preparation steps are as follows:

[0083] Weigh 20 kg of dinotefuran technical, 8 kg of polycarboxylate dispersant, 5 kg of antifreeze ethylene glycol, 0.2 kg of thickener xanthan gum, 10 kg of ammonium sulfate, 0.3 kg of defoamer and 56.5 kg of deionized water respectively, stir and mix them evenly to obtain a mixed solution. Ultrasonic shear the mixed solution for 20 minutes, transfer it to a horizontal sand mill and grind it until the particle size D90 ≤ 5 microns, then the traditional 20% dinotefuran suspension is obtained.

[0084] Verification Example 1

[0085] In this Verification Example 1, the pesticide suspensions prepared in the above examples and the pesticide suspensions prepared in the comparative examples are respectively placed in ovens at different temperatures, which are 40 °C, 45 °C, 50 °C, 55 °C and 60 °C, for 14 days. After that, they are placed at room temperature. Observe the appearance of the samples and detect the content of the active ingredient. The verification results are shown in Table 1 below. The above examples and comparative examples are respectively placed in refrigerators at different temperatures, which are 0 °C, -5 °C, -15 °C and -20 °C, for 14 days. After that, they are placed at room temperature. Observe the appearance of the samples and detect the content of the active ingredient. The verification results are shown in Table 2 below.

[0086] Table 1 High-temperature stability verification

[0087]

[0088]

[0089] (Note: Since the pesticide suspension turns into paste and cannot be restored, the content of its active ingredient is no longer detected.)

[0090] Table 2 Verification of Low-temperature Stability (Note: Since the pesticide suspension turns into paste and cannot be restored, the content of its active ingredient is no longer detected.)

[0091] Verification Example 2

[0092] This Verification Example 2 is for the control of bean thrips using Application Example 1, Application Example 2, Comparative Example 1, and Comparative Example 2.

[0093] Field efficacy verification of the suspension agents prepared in the above examples and comparative examples for the control of bean thrips was carried out in the experimental field of Hebei Lishijie Biotechnology Co., Ltd. A total of 4 treatments were set up for the verification, and at the same time, 1 blank control was set. Each treatment was replicated 4 times, and each replication was a plot. The plots were randomly arranged, and the plot area was 30m 2 , and the planting habits in all verification areas were the same as the local planting habits. A total of 6 investigations were carried out during the verification period. The population base of insects was investigated before applying the pesticide. The pesticide was applied at 17:00 on May 17, 2024. The number of surviving insects was investigated 3 days, 7 days, 15 days, 30 days, and 45 days after applying the pesticide. The experimental data were analyzed using the Duncan's new multiple range test (DMRT), and the results are shown in Table 3 below.

[0094] Table 3 Control Effects of Application Examples and Comparative Examples on Bean Thrips

[0095]

[0096] It can be seen from the above Application Example 1 and Application Example 2 that the preparation method of the pesticide suspension in the examples is simple and is conducive to industrial production.

[0097] From the verification data in Table 1 and Table 2 of Verification Example 1, it can be seen that the pesticide suspensions prepared in the above Application Example 1 and Application Example 2 can still maintain good fluidity after being stored for 14 days under the conditions of 40°C, 45°C, 50°C, 55°C, and 60°C, as well as 0°C, -5°C, -15°C, and -20°C, and the content of the active ingredient does not decrease. Although the pesticide suspension prepared in the comparative example can maintain good fluidity and the content of the active ingredient does not decrease after being stored for 14 days under the conditions of 40°C and 0°C, the content of the active ingredient decreases and crystallization and pasting occur after being stored for 14 days under other temperature conditions. Therefore, compared with the pesticide suspension prepared in the comparative example, the pesticide suspension prepared in the examples has better stability, effectively reducing the problems of crystallization and pasting that occur during the production and transportation of such pesticide suspensions.

[0098] In addition, according to the data in Table 2 of Verification Example 2, the control effects of the pesticide suspension concentrates prepared in Example 1 and Example 2 on bean thrips were 89.4% and 90.9% respectively at 3 days, while the control effects of the pesticide suspension concentrates prepared in Comparative Example 1 and Comparative Example 2 on bean thrips were 52.4% and 60.5% respectively at 3 days. From this, it can be seen that the pesticide suspension concentrates prepared in the examples are significantly stronger than those prepared in Comparative Example 1 and Comparative Example 2, indicating that the pesticide suspension concentrates prepared in the examples have stronger drug effects than those prepared in the comparative examples. At the same time, the control effects of the pesticide suspension concentrates prepared in Example 1 and Example 2 on bean thrips were 73.2% and 82.4% respectively at 45 days, indicating that the drug effects of the pesticide suspension concentrates prepared in the examples can last for 45 days and the drug effects can still remain above 70%, which is significantly higher than the drug effects of the pesticide suspension concentrates prepared in the comparative examples.

[0099] In summary, for the pesticide suspension concentrates prepared in Example 1 and Example 2 of the present invention, the addition of an emulsifier enables better emulsification of the technical material oil phase in water. At the same time, by adding a reactive monomer, hydrophilic modification is carried out on the surface of the technical material through the addition reaction between carbon-carbon double bonds. In subsequent steps, by adding inorganic salts, since the solubility of inorganic salts in water is much greater than that of the technical material, when the concentration of inorganic salts is high enough, the technical material is difficult to dissolve in water due to the principle of dissolution equilibrium.

[0100] In addition, the initiator added decomposes in the aqueous solution to generate free radicals, thereby initiating the polymerization reaction of the reactive monomer. After the above reactions, the surface of the technical material is coated with a polymer and has hydrophilic functional groups, so that the technical material will not dissolve in water with temperature changes. The hydrophilic functional groups also provide strong electrostatic repulsion to prevent the aggregation and flocculation of the technical material, thereby improving the storage stability and temperature resistance stability of the pesticide suspension concentrate. Compared with the pesticide suspension concentrates prepared by the traditional methods in Comparative Example 1 and Comparative Example 2, the suspension rate is increased, so that the active ingredient after spraying the liquid medicine is not easily sedimented and the drug effect is enhanced.

[0101] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A preparation method of a pesticide suspension concentrate, characterized in that, The preparation method includes: Mixing the technical material, an oily solvent, a reactive monomer, and an emulsifier to obtain liquid A; Mixing an inorganic salt and water uniformly to obtain liquid B; Adding the liquid A to the liquid B and dispersing it to obtain an aqueous solution dispersion system; Adding an initiator to the aqueous solution dispersion system, mixing, and reacting to obtain the pesticide suspension concentrate.

2. The preparation method of the pesticide suspension concentrate according to claim 1, characterized in that: The technical material uses dinotefuran; and / or, The oily solvent uses dimethylacetamide; and / or, The reactive monomer contains water-soluble functional groups, and the reactive monomer includes sodium p-styrenesulfonate and maleic anhydride; and / or, The emulsifier uses calcium dodecylbenzenesulfonate; and / or, The inorganic salt is selected from one or a mixture of two of sodium chloride and ammonium sulfate; and / or, The initiator is selected from any one or a mixture of several of ammonium persulfate, sodium persulfate, and potassium persulfate.

3. The preparation method of the pesticide suspension concentrate according to claim 1, characterized in that, The step of mixing the technical material, an oily solvent, a reactive monomer, and an emulsifier to obtain liquid A includes: Mixing the technical material and the oily solvent in a preset ratio; Sequentially adding the reactive monomer and the emulsifier to the mixed technical material and oily solvent, and mixing uniformly to obtain the liquid A.

4. The preparation method of the pesticide suspension concentrate according to claim 3, characterized in that: The preset ratio is 1:1 to 1:

2.

5. The preparation method of the pesticide suspension concentrate according to claim 3, characterized in that: Among the sequentially added reactive monomer and emulsifier, the mass of the reactive monomer is 20% - 50% of the mass of the technical material, and the mass of the emulsifier is 5% - 10% of the mass of the technical material.

6. The preparation method of the pesticide suspension concentrate according to claim 1, wherein, The step of mixing an inorganic salt and water uniformly to obtain liquid B includes: Mixing the inorganic salt and the water in a ratio of 1:10 to 1:8 uniformly to obtain the liquid B.

7. The preparation method of the pesticide suspension concentrate according to claim 1, wherein The step of adding an initiator to the aqueous solution dispersion system, mixing, and reacting to obtain the pesticide suspension concentrate includes: Adding a preset mass of the initiator to the aqueous solution dispersion system while stirring, and mixing uniformly to obtain a mixed liquid; Heating the mixed liquid to a preset temperature and reacting for a preset time to obtain the pesticide suspension concentrate.

8. The preparation method of the pesticide suspension concentrate according to claim 7, characterized in that: The preset mass is 0.1% - 1% of the total mass of the aqueous solution dispersion system; and / or, The preset temperature is 35°C - 45°C; and / or, The preset time is 18h - 24h.

9. A pesticide suspension concentrate, characterized in that: The pesticide suspension concentrate is prepared by the preparation method of the pesticide suspension concentrate according to any one of claims 1 to 8.

10. A pesticide, characterized in that: The pesticide contains at least the pesticide suspension concentrate according to claim 9.

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