Aviation application type mesotrione water suspending agent and preparation method thereof

A technology of mesotrione and water suspension, which is applied in the field of aviation application type mesotrione water suspension and its preparation, which can solve the problems of reducing the surface tension of the solution, precipitation aggregation, increasing the viscosity of the liquid medicine, etc., and achieve dispersibility And stable effect, reduce environmental pollution, reduce the effect of droplet evaporation

Inactive Publication Date: 2018-05-18
SHANGHAI NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Pesticide spray auxiliaries are classified according to chemical composition, mainly including mineral oil, surfactant, vegetable oil, silicone, etc. Mineral oil spray adjuvant can promote the penetration of herbicides in the waxy layer of plant leaves and insect body surface Absorption, but the selectivity to some crops is poor, and the environmental conditions are strict when used. In addition, mineral oil is a petroleum product, and the source of raw materials is limited; organic silicon additives can effectively reduce the surface tension of the solution, and can greatly promote the diffusion of the drug. However, this additive is very sensitive to the pH value of t

Method used

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  • Aviation application type mesotrione water suspending agent and preparation method thereof
  • Aviation application type mesotrione water suspending agent and preparation method thereof
  • Aviation application type mesotrione water suspending agent and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0032] A kind of 10% aerial application type mesotrione water suspension concentrate, each component content (by weight) is: mesotrione 10%, carboxylate and derivative ternary copolymerization dispersant 2% (Shanghai is Large Polymer Materials Co., Ltd.), hydroxymethylcellulose 2%, thickener xanthan gum (2% aqueous solution) 5%, silicone defoamer 0.5%, sodium benzoate 0.2% and ethylene glycol 4% ( Aladdin Reagent Shanghai Co., Ltd.), the appropriate amount of PH regulator citric acid makes the pH of the water suspension be 6-8, 0.2% hydroxypropyl guar gum, 0.1% sodium hydroxymethylcellulose, add deionized water to make up to 100 %.

[0033] The specific preparation method is:

[0034] The first step: Pre-crushing the original drug of mesotrione, mixing and stirring with wetting and dispersing agent, antifreeze, defoamer, preservative and deionized water according to a certain proportion, and continuing sanding through a horizontal sand mill , the temperature is controlled be...

Embodiment 2

[0044] A kind of 15% aerial application type mesotrione water suspension concentrate, each component content (by weight) is: mesotrione 15%, carboxylate and derivative ternary copolymerization dispersant 2.5% (Shanghai is Large Polymer Material Co., Ltd.), hydroxymethylcellulose 2.5%, thickener xanthan gum (2% aqueous solution) 5%, silicone defoamer 0.5%, sodium benzoate 0.2% and ethylene glycol 4% ( Aladdin Reagent Shanghai Co., Ltd.), the appropriate amount of PH regulator citric acid makes the pH of the water suspension be 6-8, 0.2% hydroxypropyl guar gum, 0.1% sodium hydroxymethylcellulose, add deionized water to make up to 100 %. The specific preparation method is carried out according to Example 1.

[0045] After testing, the main technical indicators of the product are as follows:

[0046]Effective content: 15%; Appearance: Light yellow uniform liquid; Average particle size: 4.01μm; Viscosity: 528mpa.s; Suspension rate: 96.2%; Stability: qualified.

[0047] In order...

Embodiment 3

[0053] A kind of 40% aerial application type mesotrione water suspension concentrate, each component content (by weight) is: mesotrione 40%, carboxylate and derivative ternary copolymer dispersant 6% (Shanghai is Large Polymer Material Co., Ltd.), hydroxymethylcellulose 2.5%, thickener xanthan gum (2% aqueous solution) 5%, silicone defoamer 0.5%, sodium benzoate 0.2% and ethylene glycol 4% ( Aladdin Reagent Shanghai Co., Ltd.), the appropriate amount of PH regulator citric acid makes the pH of the water suspension be 6-8, hydroxypropyl guar gum 0.3%, sodium hydroxymethylcellulose 0.1%, add deionized water to make up to 100 %. The specific preparation method is carried out according to Example 1.

[0054] After testing, the main technical indicators of the product are as follows:

[0055] Effective content: 40%; Appearance: Light yellow uniform liquid; Average particle size: 4.25μm; Viscosity: 536mpa.s; Suspension rate: 96.8%; Stability: qualified.

[0056] In order to test...

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Abstract

The invention relates to an aviation application type mesotrione water suspending agent and a preparation method thereof. The water suspending agent comprises the following components in percentage byweight: 10-40% of a mesotrione technical material, 1-6% of a wetting dispersant, 0.5-5% of a thickening agent, 0.1-0.5% of a defoaming agent, 2-6% of an antifreezing agent, 0.1-1% of a preservative,0.1-0.3% of a pH regulator, 0.1-1% of a spraying auxiliary agent, and the balance of deionized water for complementing the total weight percentage to 100%. Compared with the prior art, the water suspending agent provided by the invention has a novel auxiliary agent system, the volatilization drift loss of the mesotrione in a spraying process by using an unmanned aerial vehicle is reduced, the improvement of the utilization efficiency of the pesticide is facilitated, and the environmental pollution is reduced. With the combination of the pesticide spraying technology of unmanned aerial vehicles, the aviation application type efficient environment-friendly mesotrione water suspending agent has strong wettability, is obviously enhanced in adhesive force on plant leaves, and is an efficient green aviation application type mesotrione water suspending agent.

Description

technical field [0001] The invention belongs to the field of pesticide preparations, and in particular relates to an aerial application type mesotrione aqueous suspension and a preparation method thereof. Background technique [0002] Mesotrione (mesotrione), also known as "Mesotrione", is a new triketone herbicide with contact and specific effects, mainly by inhibiting the expression of hydroxyphenylpyruvate dioxygenase in plants. It has herbicidal activity and can effectively control broad-leaved grasses and some grass weeds. Mesotrione is easy to conduct in the xylem and phloem of plants, has contact killing effect and specific effect, and its biological activity is 10 times higher than that of sulcotrione. [0003] With the rapid development of China's science and technology and the popularization of modern pesticide technology, aircraft spraying technology has gradually become the new favorite of China's modern pesticide spraying. Aircraft spraying pesticides is highl...

Claims

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Application Information

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IPC IPC(8): A01N25/04A01N25/24A01N41/10A01P13/00
CPCA01N25/04A01N25/24A01N41/10
Inventor 任天瑞任帅臻张雷朱红邱俊云李文刚张丽萍胡国耀董秀莲
Owner SHANGHAI NORMAL UNIVERSITY
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