Nano-controlled-release pesticide taking polyethylene wax as coating matrix and preparation method thereof

A polyethylene wax and controlled-release pesticide technology, applied in the field of pesticides, can solve the problems of complex preparation process, poor stability, low drug loading, etc., and achieve the effects of simple preparation process, good anti-oxidation, and simple preparation method

Inactive Publication Date: 2020-06-26
GAUNGXI TIANYUAN BIOCHEM +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, the currently disclosed nano-pesticide particle preparations may have disadvantages such as low drug loading, poor stability, complex preparation process, and high cost.

Method used

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  • Nano-controlled-release pesticide taking polyethylene wax as coating matrix and preparation method thereof
  • Nano-controlled-release pesticide taking polyethylene wax as coating matrix and preparation method thereof
  • Nano-controlled-release pesticide taking polyethylene wax as coating matrix and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] Example 1 Preparation of 2.5% lambda-cyhalothrin with polyethylene wax as a nano-controlled release pesticide formulation wrapped in matrix

[0043] (1) Weigh 1.5Kg Siben-40 emulsifier and add it to 62L deionized water, stir and dissolve fully to obtain an aqueous solution containing surfactant;

[0044] (2) Add 1.2Kg of polyethylene wax to 31L of butyl acetate, then stir at 60-90°C until the polyethylene wax dissolves, then add 2.8Kg of cyhalothrin, and continue heating at 60-90°C Stir to dissolve to obtain a mixed solution;

[0045] (3) keep the temperature of the mixed solution in step (2) constant, and quickly add it to the surfactant aqueous solution in step (1) under high-speed stirring, and continue to stir at a high speed to obtain a suspoemulsion;

[0046] (4) further ultrasonically dispersing the suspoemulsion described in step (3) at a low temperature of 0-10° C. to obtain a nano-suspoemulsion;

[0047] (5) add 1.7Kg dispersant xanthan gum in the nanosuspen...

Embodiment 2

[0048] Example 2 Preparation of 3.3% Abamectin Nano-controlled Release Pesticide Preparation Using Polyethylene Wax as a Coating Matrix

[0049] (1) Weigh 2Kg Siben-60 emulsifier and add it to 116L deionized water, after fully stirring and dissolving, an aqueous solution containing surfactant is obtained;

[0050] (2) Add 2Kg of polyethylene wax to 30L of sec-butyl acetate, then stir at 60-90°C until the polyethylene wax dissolves, then add 6.3Kg of abamectin, and continue heating and stirring at 60-90°C Dissolved to obtain a mixed solution;

[0051] (3) keep the temperature of the mixed solution in step (2) constant, and quickly add it to the surfactant aqueous solution in step (1) under high-speed stirring, and continue to stir at a high speed to obtain a suspoemulsion;

[0052] (4) further ultrasonically dispersing the suspoemulsion obtained in step (3) at a low temperature of 0-10° C. to obtain a nano-suspoemulsion;

[0053] (5) add 1.4Kg dispersant 500LQ in the nano-sus...

Embodiment 3

[0054] Example 3 Preparation of 3% chlorantraniliprole nano-controlled release pesticide formulation with polyethylene wax as the encapsulation matrix

[0055] (1) Weigh 3.5Kg Siben-20 emulsifier and add it to 116L deionized water, after fully stirring and dissolving, an aqueous solution containing surfactant is obtained;

[0056] (2) Add 2.0Kg of polyethylene wax to 50L of acetamide, then stir at 60-90°C until the polyethylene wax dissolves, then add 5.6Kg of chlorantraniliprole, and continue heating and stirring at 60-90°C Dissolved to obtain a mixed solution;

[0057] (3) keep the temperature of the mixed solution in step (2) constant, and quickly add it to the surfactant aqueous solution in step (1) under high-speed stirring, and continue to stir at a high speed to obtain a suspoemulsion;

[0058] (4) further ultrasonically dispersing the suspoemulsion obtained in step (3) at a low temperature of 0-10° C. to obtain a nano-suspoemulsion;

[0059] (5) add 1.5Kg dispersant ...

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Abstract

The invention, which belongs to the technical field of pesticides, provides a nano-controlled-release pesticide taking polyethylene wax as a coating matrix and a preparation method thereof. Accordingto the nano-controlled-release pesticide taking polyethylene wax as a coating matrix, polyethylene wax is coated with active molecules of a pesticide active compound by high-speed emulsification and ultrasonic dispersion to obtain the nano-controlled-release pesticide taking the polyethylene wax as the coating matrix. The nano-controlled-release pesticide provided by the invention has very good photolysis resistance, oxidation resistance and slow release effect, and has the advantages of controllable drug loading capacity and simple preparation process.

Description

technical field [0001] The invention relates to the technical field of pesticides, in particular to a nano controlled-release pesticide with polyethylene wax as a coating matrix and a preparation method thereof. Background technique [0002] With the development of agricultural production in our country, due to the increase in the use of pesticides, the problem of pesticide pollution is becoming more and more serious, which has a great impact on the environmental ecology and people's health. At present, in addition to accelerating the research and development of new pesticides with high efficiency and low toxicity, improving the dosage forms and formulas of existing pesticides, giving full play to the efficacy of existing pesticides and reducing the amount of pesticides is another effective way for the sustainable development of modern agriculture and environmental protection. . [0003] Compared with traditional pesticide formulations, nano-pesticides that have emerged in ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N25/26A01N25/22A01N53/08A01N43/90A01N43/56A01N47/38A01N43/54A01N43/653A01N47/02A01P7/04A01P3/00A01P1/00
CPCA01N25/22A01N25/26A01N43/54A01N43/56A01N43/653A01N43/90A01N47/02A01N47/38A01N53/00
Inventor 崔建国李香荧黄燕敏李卫国江杨甘春芳莫冬梅卢瑞
Owner GAUNGXI TIANYUAN BIOCHEM
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