Preparation method of efficient environment-friendly chlorpyrifos missible oil preparation

Abstract

The invention relates to the technical field of chlorpyrifos missible oil preparations, and particularly discloses a preparation method of an efficient and environment-friendly chlorpyrifos missible oil preparation. Comprising the following operation steps: S1, uniformly mixing a chlorpyrifos active compound, an ester compound and an alcohol ether organic solvent, and heating and stirring to obtain a mixed solution A; s2, adding a mixed emulsifier into the mixed solution A, and continuously and uniformly stirring to obtain a mixed solution B; and S3, adding an epoxy compound into the mixed solution B, and continuously and uniformly stirring to obtain the efficient environment-friendly chlorpyrifos missible oil preparation.

Description

Technical Field

[0001] The invention relates to the technical field of chlorpyrifos emulsifiable concentrate preparations, in particular to a method for preparing a highly efficient and environment-friendly chlorpyrifos emulsifiable concentrate preparation. Background Art

[0002] Chlorpyrifos is a common and commonly used broad-spectrum insecticide. Compared with conventional pesticides, it has lower toxicity, longer lasting effect, is safe to natural enemies, and has no systemic effect, thus ensuring the pollution-free nature of agricultural products. However, due to the country's requirements for green, environmentally friendly and healthy agricultural products in recent years, almost all co-solvents in chlorpyrifos formulations have been banned or restricted. However, the environmentally friendly solvents that can be used have average miscibility with chlorpyrifos itself, which greatly reduces the protective effect of chlorpyrifos preparations during use.

[0003] In the formulation of emulsifiable concentrate, the formulation requirement is that the solvent can completely dissolve the original drug and no original drug precipitation occurs at low temperatures. Since co-solvents generally do not increase the protective effect, this requires that the co-solvents have a greater solubility for the original drug as much as possible, so that less co-solvents can be used and the proportion of the original drug can be increased. However, it is very difficult to find such a co-solvent.

[0004] In the emulsifiable concentrate dosage form, high temperature storage can easily cause the decomposition of the original drug, and a high decomposition rate of the original drug will make the product unqualified in appearance, stability, and efficacy. This phenomenon is particularly obvious in the product of chlorpyrifos emulsifiable concentrate, so how to ensure that the decomposition rate of chlorpyrifos preparations is low after high temperature storage is an important problem faced by both China and abroad at this stage. Summary of the invention

[0005] The object of the present invention is to provide a method for preparing an efficient and environmentally friendly chlorpyrifos emulsifiable concentrate preparation to solve the problems raised in the above background technology.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions: A highly efficient and environment-friendly chlorpyrifos emulsifiable concentrate preparation, wherein the raw materials of the chlorpyrifos emulsifiable concentrate preparation include the following components: by weight, 53 to 55 parts of chlorpyrifos technical, 2 to 2.5 parts of epoxy compounds, 8 to 10 parts of ester compounds, 21 to 23 parts of alcohol ether organic solvents, and 11.5 to 14 parts of mixed emulsifiers.

[0007] In the plan, chlorpyrifos is a common and frequently used broad-spectrum insecticide with low toxicity, long lasting effect, safety to natural enemies, and no systemic effect. Its main function is to act as the active ingredient in the entire product, playing a role in exerting its medicinal efficacy.

[0008] More preferably, the epoxy compound includes one or more of epoxy soybean oil, epichlorohydrin, and cyclohexene oxide.

[0009] In the scheme, the epoxy compound is preferably cyclohexene oxide; the main function of the epoxy compound is the special epoxidation structure, which can offset or replace the natural oxidation decomposition reaction of the chlorpyrifos preparation during storage, so that the decomposition rate of the chlorpyrifos preparation can be kept relatively low after long-term storage or high-temperature storage, thereby solving the problems of flocculent precipitation and darkening of appearance color.

[0010] Preferably, the ester compound includes one or more of tributyl citrate, triethyl citrate, and acetyl tributyl citrate.

[0011] In the scheme, the ester compound is preferably acetyl tributyl citrate (ATBC); the main function of the ester compound is that its unique acetyl citrate structure not only has good dispersion and volume expansion capabilities, but is also very friendly to the environment and animals, and can effectively replace DMF, cyclohexanone and other highly toxic co-solvents to keep the chlorpyrifos preparation stable after long-term storage or low-temperature storage, thereby solving problems such as crystallization, solidification, and stratification.

[0012] Preferably, the alcohol ether organic solvent includes one or more of benzyl alcohol, acetophenone, and ethylene glycol phenyl ether.

[0013] In the scheme, the alcohol ether organic solvent is preferably ethylene glycol phenyl ether; the main function of the alcohol ether organic solvent is to dissolve the chlorpyrifos technical so that the entire preparation remains in a true solution state; in addition, its unique spatial configuration makes ethylene glycol phenyl ether have the characteristics of high boiling point, low toxicity, low volatility, strong permeability, good miscibility, etc., which makes it possible to completely replace the traditional highly toxic xylene as an environmentally friendly main solvent; at the same time, due to its good permeability, it can participate in the improvement of the prevention effect to a certain extent, so that the entire product has a high prevention effect during use.

[0014] More optimally, the mixed emulsifier includes one or more of polymer block polyether 500LQ, fatty alcohol polyoxyethylene ether, castor oil polyoxyethylene ether, and octylphenol polyoxyethylene ether phosphate.

[0015] More optimally, the mixed emulsifier includes: by mass, 5 parts of polymer block polyether 500LQ, 4 parts of hydrophilic polyoxyethylene ether, and 3 parts of octylphenol polyoxyethylene ether phosphate.

[0016] More optimally, the hydrophilic polyoxyethylene ether comprises: by mass, 1.5 parts of fatty alcohol polyoxyethylene ether and 2.5 parts of castor oil polyoxyethylene ether.

[0017] In the scheme, the main function of the high molecular block polyether 500LQ is to assist emulsification, so that the fatty alcohol polyoxyethylene ether, castor oil polyoxyethylene ether and octylphenol polyoxyethylene ether phosphate can work together better, thereby improving the overall emulsion stability of the chlorpyrifos preparation and preventing the chlorpyrifos preparation from having unqualified emulsification states such as precipitation, floating oil, floating cream and stratification during the emulsification process; in the more optimized scheme, the high molecular block polyether 500LQ accounts for 5% of the entire preparation formula; The main function of fatty alcohol polyoxyethylene ether and castor oil polyoxyethylene ether is to provide hydrophilic groups, so that the chlorpyrifos preparation can wrap the chlorpyrifos original drug small molecules in the process of entering water and form hydrogen bonds with water, thereby greatly reducing the interfacial tension between the oil phase and the water phase, thereby ensuring its emulsion stability and preventing the chlorpyrifos preparation from having unqualified emulsification states such as precipitation, floating oil, floating cream, and stratification during the emulsification process; the more optimized one accounts for 4% in the entire preparation formula; The main function of octylphenol polyoxyethylene ether phosphate is to provide lipophilic groups, so that the chlorpyrifos preparation can better wrap the chlorpyrifos original drug small molecules during the water entry process, greatly reducing the surface tension of the oil phase end, thereby ensuring its emulsion stability and preventing the chlorpyrifos preparation from having unqualified emulsification states such as precipitation, floating oil, floating paste, and stratification during the emulsification process; in the more optimized case, its proportion in the entire preparation formula is 3%.

[0018] The more optimized one includes the following steps: S1: uniformly mixing chlorpyrifos technical, ester compound and alcohol ether organic solvent, heating and stirring to obtain a mixed solution A; S2: adding a mixed emulsifier to the mixed solution A and stirring continuously to obtain a mixed solution B; S3: Add the epoxy compound to the mixed solution B and continue stirring to obtain a highly efficient and environmentally friendly chlorpyrifos emulsifiable concentrate preparation.

[0019] More optimally, in S1, the temperature of the heating and stirring treatment is 40-45° C., and the time of the heating and stirring treatment is 2-3 hours.

[0020] In the scheme, chlorpyrifos, alcohol ether organic solvents and ester compounds are put into a mixing kettle, heated to 40-45°C and stirred for 2-3 hours; the main function of this step is to allow the chlorpyrifos technical to completely dissolve and mix with the solvent to form a true solution state, so that the chlorpyrifos preparation can maintain various performance indicators stable after long-term storage. The heating link in this step is essential. If it is not heated and stirred, small particles of solid technical drugs may still be suspended in it after 3 hours and not completely dissolved, and it is difficult to observe clearly with the naked eye, which will cause the preparation to crystallize in the later storage; and the temperature in this process should not be higher than 50°C, otherwise it is easy to cause the subsequent decomposition rate of the chlorpyrifos preparation to increase.

[0021] After the chlorpyrifos technical drug is completely dissolved, the mixed emulsifier ester is added and stirred for 1 hour; the main function of this step is to add the emulsifier so that the chlorpyrifos technical solution can be completely mixed with it, so that the chlorpyrifos technical solution is fully emulsified to ensure that the chlorpyrifos preparation can be normally emulsified during subsequent use without precipitation, agglomeration, nozzle clogging, etc.

[0022] After the emulsification of the chlorpyrifos preparation is completed, the epoxy compound is added and the product can be prepared after continuous stirring for 1 hour; the main function of this step is that after the epoxy compound is added, the oxidation reaction of the chlorpyrifos preparation during long-term storage can be effectively prevented or replaced, so that the chlorpyrifos preparation can still be at a low decomposition rate after high-temperature storage, thereby ensuring the quality of the product and improving the prevention effect.

[0023] Compared with the prior art, the beneficial effects achieved by the present invention are: The main function of ester compounds is that their unique acetyl citrate structure not only has good dispersion and volume expansion capabilities, but is also very friendly to the environment and animals, thus solving problems such as crystallization, solidification, and stratification.

[0024] The main function of alcohol ether organic solvents is to dissolve the original drug of chlorpyrifos so that the entire preparation remains in a true solution state; its unique spatial configuration makes ethylene glycol phenyl ether have the characteristics of high boiling point, low toxicity, low volatility, strong penetration ability, good miscibility, etc., so that the entire product has a high protective effect during use.

[0025] The mixed emulsifier is added to fully emulsify the stock solution of chlorpyrifos to ensure that the chlorpyrifos preparation can be normally emulsified during subsequent use; the addition of cyclohexene oxide can effectively prevent or replace the oxidation reaction of the chlorpyrifos preparation during long-term storage, so that the chlorpyrifos preparation can still be at a low decomposition rate after high-temperature storage, and no original drug precipitation occurs at low temperatures, thereby ensuring the quality of the product and improving the prevention effect. DETAILED DESCRIPTION

[0026] The following is a preferred implementation of the embodiment of the present invention. Obviously, the described embodiment is only a part of the embodiment of the present invention, not all of the embodiments. For ordinary technicians in this technical field, all other embodiments obtained by ordinary technicians in this field without creative work without departing from the principle of the embodiment of the present invention are within the scope of protection of the present invention.

[0027] Example 1: Preparation of an efficient and environmentally friendly chlorpyrifos emulsifiable concentrate preparation; S1: 54 parts of highly efficient and environmentally friendly chlorpyrifos EC, 22 parts of ethylene glycol phenyl ether, and 10 parts of alcohol ether organic solvent are uniformly mixed, and heated and stirred to obtain a mixed solution A; S2: Add 5 parts of 500LQ emulsifier, 1.5 parts of fatty alcohol polyoxyethylene ether, 2.5 parts of castor oil polyoxyethylene ether and 3 parts of octylphenol polyoxyethylene ether phosphate to the mixed solution A and continue stirring for 1 hour to obtain a mixed solution B; S3: Add 2 parts of cyclohexene oxide to the mixed solution B and continue stirring for 1 hour to obtain a highly efficient and environmentally friendly 54% chlorpyrifos emulsifiable concentrate preparation; parts in the embodiment are parts by mass; The results of the field test on wheat aphids with the highly efficient and environmentally friendly 54% chlorpyrifos preparation; The test site was selected in Daotou Village, Xunqiao Town, Linhai City, Zhejiang Province. The test site is flat and the fertility is slightly higher than the average level; This experiment designed three comparison groups: high-efficiency and environmentally friendly 54% chlorpyrifos emulsifiable concentrate (Nanjing Taihua Chemical Co., Ltd.), 600g / L chlorpyrifos preparation (Yixing Yizhou Chemical Co., Ltd.), 550g / L chlorpyrifos cyanide preparation (Zhejiang Yongnong Bioscience Co., Ltd.); 1 blank control group (spraying water); each group was repeated 3 times, with a total of 12 small test areas, each with an area of ​​15m 2 , the cell groups are randomly arranged; The spraying equipment was a backpack electric sprayer produced by Taizhou Luqiao Pengjie Plastic Film Machinery Factory. The weather on the day of spraying was cloudy, the temperature was 15-26℃, the relative humidity was 70%, there was no continuous wind direction, and the wind force was level 1. The test agent was added according to the test plan, the water consumption per mu was 15L, and the dosage of the drug was 60mL. Samples were taken at 5 points in each plot, 1m at each point. 2 In this experiment, a total of three surveys were conducted, namely 1 day before medication, 3 days after medication, and 14 days after medication. The number of aphids was counted and the control effect was calculated based on the survey results, as shown in Table 1, the control effect data of the experimental group and the control group 3 days after medication; Table 2, the control effect data of the experimental group and the control group 14 days after medication.

[0028] Example 2: Preparation of an efficient and environmentally friendly chlorpyrifos emulsifiable concentrate preparation; S1: 54 parts of chlorpyrifos technical, 22 parts of ethylene glycol phenyl ether, and 10 parts of alcohol ether organic solvent are uniformly mixed, and heated and stirred to obtain a mixed solution A; S2: Add 5 parts of 500LQ emulsifier, 1.5 parts of fatty alcohol polyoxyethylene ether, 2.5 parts of castor oil polyoxyethylene ether and 3 parts of octylphenol polyoxyethylene ether phosphate to the mixed solution A and continue stirring for 1 hour to obtain a mixed solution B; S3: Add 2 parts of cyclohexene oxide to the mixed solution B and continue stirring for 1 hour to obtain a highly efficient and environmentally friendly 54% chlorpyrifos emulsifiable concentrate preparation; parts in the embodiment are parts by mass; Field test data results of the highly efficient and environmentally friendly 54% chlorpyrifos preparation against corn armyworm; The test site was selected in Lijia field, Xiaogang Town, Fengcheng City, Jiangxi Province. The soil type is loam, and the soil moist fertilization level is equivalent to the local practice. In this experiment, 48% chlorpyrifos preparation (product of Jiangsu Aijin Agrochemical Co., Ltd.) and 53% chlorpyrifos preparation (product of Nanjing Red Sun Biochemical Co., Ltd.) were used as comparative examples 1 and 2; spraying water was used as a blank control group; each group was repeated 3 times, and a total of 12 test areas were set up, each with an area of ​​20m 2 , the cell groups are randomly arranged; The spraying equipment was MBTABI-16 backpack sprayer with fan-shaped nozzle and working pressure of 0.3~0.4MPa. The weather on the day of spraying was sunny with temperature of 13~25℃, relative humidity of 76%, and light wind. The test agent was added according to the test plan, with water consumption of 15~20L per mu and the dosage of 50mL. Samples were taken at 5 points in each plot, 1m 2 , This test was investigated three times, namely 1 day before medication, 3 days after medication and 7 days after medication, the number of armyworms was counted, and the control effect was calculated based on the investigation results, as shown in Table 3, the control effect data of Example 2, Comparative Examples 1~2 and the control group 3 days after medication; Table 4, the control effect data of Example 2 and Comparative Examples 1~2 7 days after medication.

[0029] Example 3: Preparation of an efficient and environmentally friendly chlorpyrifos emulsifiable concentrate preparation; S1: 54 parts of chlorpyrifos technical, 22 parts of ethylene glycol phenyl ether, and 10 parts of alcohol ether organic solvent are uniformly mixed, and heated and stirred to obtain a mixed solution A; S2: Add 5 parts of 500LQ emulsifier, 1.5 parts of fatty alcohol polyoxyethylene ether, 2.5 parts of castor oil polyoxyethylene ether and 3 parts of octylphenol polyoxyethylene ether phosphate to the mixed solution A and continue stirring for 1 hour to obtain a mixed solution B; S3: Add 2 parts of cyclohexene oxide to the mixed solution B and continue stirring for 1 hour to obtain a highly efficient and environmentally friendly 54% chlorpyrifos emulsifiable concentrate preparation; parts in the embodiment are parts by mass; Storage experimental data of highly efficient and environmentally friendly chlorpyrifos preparations; In this experiment, ordinary chlorpyrifos preparation (prepared by Nanjing Taihua Chemical Co., Ltd.) and purchased chlorpyrifos preparation (product of Yixing Yizhou Chemical Co., Ltd.) were used as comparative examples 3 and 4; 100g of emulsifiable concentrate sample was taken in an ampoule and sealed, and then a 7-day cold storage experiment was carried out, maintaining a constant temperature of 0±2°C; a 14-day hot storage experiment, maintaining a constant temperature of 54±2°C, and a 365-day room temperature storage experiment were carried out; the relative experimental environment of the three bottles of samples was the same, and the experimental results are shown in Table 5 Storage of efficient and environmentally friendly chlorpyrifos preparations.

[0030] Example 4: Preparation of an efficient and environmentally friendly chlorpyrifos emulsifiable concentrate preparation; S1: 54 parts of chlorpyrifos EC, 22 parts of ethylene glycol phenyl ether, and 10 parts of an alcohol ether organic solvent are uniformly mixed, and heated and stirred to obtain a mixed solution A; S2: Add 5 parts of 500LQ emulsifier, 1.5 parts of fatty alcohol polyoxyethylene ether, 2.5 parts of castor oil polyoxyethylene ether and 3 parts of octylphenol polyoxyethylene ether phosphate to the mixed solution A and continue stirring for 1 hour to obtain a mixed solution B; S3: Add 2 parts of cyclohexene oxide to the mixed solution B and continue stirring for 1 hour to obtain a highly efficient and environmentally friendly 54% chlorpyrifos emulsifiable concentrate preparation; parts in the embodiment are parts by mass; Experimental data on the decomposition rate of highly efficient and environmentally friendly chlorpyrifos preparations; In this experiment, the purchased chlorpyrifos preparation No. 1 (a product of Yixing Yizhou Chemical Co., Ltd.), the purchased chlorpyrifos preparation No. 2 (a product of Corteva, formerly Dow AgroSciences), and the purchased chlorpyrifos preparation No. 3 (a product of Syngenta China) were used as comparative examples 5, 6, and 7, respectively; 100 g and 3 portions of emulsifiable concentrate samples of Example 4 (high-efficiency and environmentally friendly 54% chlorpyrifos emulsifiable concentrate preparation), Comparative Example 3, and Comparative Examples 5 to 7 were respectively placed in ampoules and sealed, and then subjected to a 7-day cold storage experiment, maintaining a constant temperature of 0±2°C; a 14-day hot storage experiment, maintaining a constant temperature of 54±2°C, and a 365-day room temperature storage experiment; the 15 bottles of samples were placed in the same relative experimental environment, and the experimental results are shown in Table 6, the decomposition rate of the high-efficiency and environmentally friendly chlorpyrifos preparation.

[0031] Example 5: Preparation of an efficient and environmentally friendly chlorpyrifos emulsifiable concentrate preparation; S1: 54 parts of chlorpyrifos EC, 22 parts of ethylene glycol phenyl ether, and 10 parts of an alcohol ether organic solvent are uniformly mixed, and heated and stirred to obtain a mixed solution A; S2: Add 5 parts of 500LQ emulsifier, 1.5 parts of fatty alcohol polyoxyethylene ether, 2.5 parts of castor oil polyoxyethylene ether and 3 parts of octylphenol polyoxyethylene ether phosphate to the mixed solution A and continue stirring for 1 hour to obtain a mixed solution B; S3: Add 2 parts of cyclohexene oxide to the mixed solution B and continue stirring for 1 hour to obtain a highly efficient and environmentally friendly 54% chlorpyrifos emulsifiable concentrate preparation; parts in the embodiment are parts by mass; Experimental data on stability of highly efficient and environmentally friendly chlorpyrifos emulsion preparation; 5 mL of chlorpyrifos preparation was taken from Example 5, Comparative Example 3, and Comparative Examples 5 to 7 respectively in a pipette, and evenly dropped into a measuring cylinder containing 95 mL of standard hard water D, and the emulsion stability was observed for 0.5 hours, 2 hours, and 24 hours; the experimental data results are shown in Table 7 Emulsion Stability of High-efficiency and Environmentally Friendly Chlorpyrifos Preparation.

[0032] Test results: The formula for calculating drug efficacy is: (number of live insects before drug administration - number of live insects after drug administration) / number of live insects before drug administration × 100%; the formula for calculating control effect is: (drug efficacy of test group - drug efficacy of control group) / (100 - drug efficacy of control group) × 100%;

[0033] Table 1

[0034] Table 2 Conclusion: From Table 1 and Table 2, we can see that whether it is 3 days or 14 days after medication, the final efficacy of the highly efficient and environmentally friendly chlorpyrifos product is 89.18% and 96.56% respectively, which are significantly better than similar products on the market; therefore, it can be considered that this product has high efficacy.

[0035]

[0036] Table 3

[0037] Table 4 Conclusion: From Table 3 and Table 4, we can see that whether it is 3 days or 14 days after medication, the final efficacy of the highly efficient and environmentally friendly chlorpyrifos product is 90.40% and 98.05% respectively, which are significantly better than similar products on the market; therefore, it can be considered that this product has high efficacy.

[0038]

[0039] Table 5 Conclusion: From Table 5, we can see that the highly efficient and environmentally friendly chlorpyrifos preparation exhibits good stability in both cold and hot storage as well as room temperature storage, successfully avoiding the problem of precipitation of chlorpyrifos preparation during long-term storage, showing obvious advantages.

[0040]

[0041] Table 6 Conclusion: From Table 6, we can see that the decomposition rates of the high-efficiency and environmentally friendly chlorpyrifos preparation in cold storage, hot storage and room temperature storage are all significantly better than other similar products on the market. The product prepared by the present invention is fully able to meet the current standards at home and abroad; thus, it can be seen that it has superiority in anti-degradation.

[0042]

[0043] Table 7 Conclusion: From Table 7, it can be seen that the emulsion stability of the highly efficient and environmentally friendly chlorpyrifos preparation is basically the same as or better than that of the products generally sold on the market, and can fully meet the emulsion stability standards established by the International Grain and Oil Organization and the domestic pesticide stability standards. This shows that the product of this invention has superior performance in emulsion stability.

[0044] Finally, it should be noted that the above is only a preferred embodiment of the present invention, but the protection scope of this application is not limited thereto. Any changes or substitutions that can be easily thought of by any technician familiar with the technical field within the spirit and principle of the present invention and within the technical scope disclosed in this application should be included in the protection scope of this application; in the absence of conflict, the embodiments of this application and the features in the embodiments can be combined with each other. Therefore, the protection scope of this application shall be based on the protection scope of the claims.

Claims

1. A highly efficient and environmentally friendly chlorpyrifos emulsifiable concentrate preparation, characterized in that: The raw materials of the chlorpyrifos emulsifiable concentrate preparation include the following components: by weight, 53-55 parts of chlorpyrifos technical, 2-2.5 parts of epoxy compounds, 8-10 parts of ester compounds, 21-23 parts of alcohol ether organic solvents, and 11.5-14 parts of mixed emulsifiers.

2. The highly efficient and environmentally friendly chlorpyrifos emulsifiable concentrate preparation according to claim 1, characterized in that: The epoxy compound includes one or more of epoxy soybean oil, epichlorohydrin, and cyclohexene oxide.

3. The highly efficient and environmentally friendly chlorpyrifos emulsifiable concentrate preparation according to claim 1, characterized in that: The ester compound includes one or more of tributyl citrate, triethyl citrate, and acetyl tributyl citrate.

4. The highly efficient and environmentally friendly chlorpyrifos emulsifiable concentrate preparation according to claim 1, characterized in that: The alcohol ether organic solvent includes one or more of benzyl alcohol, acetophenone, and ethylene glycol phenyl ether.

5. The highly efficient and environmentally friendly chlorpyrifos emulsifiable concentrate preparation according to claim 1, characterized in that: The mixed emulsifier includes one or more of polymer block polyether 500LQ, fatty alcohol polyoxyethylene ether, castor oil polyoxyethylene ether, and octylphenol polyoxyethylene ether phosphate.

6. The highly efficient and environmentally friendly chlorpyrifos emulsifiable concentrate preparation according to claim 5, characterized in that: The mixed emulsifier comprises: by weight, 5 parts of high molecular block polyether 500LQ, 4 parts of hydrophilic polyoxyethylene ether, and 3 parts of octylphenol polyoxyethylene ether phosphate.

7. The highly efficient and environmentally friendly chlorpyrifos emulsifiable concentrate preparation according to claim 6, characterized in that: The hydrophilic polyoxyethylene ether comprises: by weight, 1.5 parts of fatty alcohol polyoxyethylene ether and 2.5 parts of castor oil polyoxyethylene ether.

8. The method for preparing a highly efficient and environmentally friendly chlorpyrifos emulsifiable concentrate according to any one of claims 1 to 7, characterized in that: The steps include: S1: uniformly mixing chlorpyrifos technical, ester compound and alcohol ether organic solvent, heating and stirring to obtain a mixed solution A; S2: adding a mixed emulsifier to the mixed solution A and stirring continuously to obtain a mixed solution B; S3: Add the epoxy compound to the mixed solution B and continue stirring to obtain a highly efficient and environmentally friendly chlorpyrifos emulsifiable concentrate preparation.

9. The method for preparing a highly efficient and environmentally friendly chlorpyrifos emulsifiable concentrate according to claim 8, characterized in that: In S1, the temperature of the heating and stirring treatment is 40-45° C.; and the time of the heating and stirring treatment is 2-3 hours.

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