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Preparation method of special-purpose herbicide for unmanned aerial vehicles for aviation crop protection

A plant protection drone and herbicide technology, applied in botany equipment and methods, herbicides and algicides, plant growth regulators, etc., can solve the difficulty of fog drop drift control, easy drift away from the target area, operation Higher height issues, to achieve the effect of beneficial weeding effect, obvious target effect and effective deposition

Inactive Publication Date: 2017-05-10
江苏蒲公英无人机有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] After entering the 21st century, my country proposed sustainable development and the rise of plant protection drones, which have the advantages of large liquid capacity and high spraying efficiency, and are suitable for large-scale farmland pest control, sanitation, epidemic prevention, and other operations. Existing pesticides also have shortcomings such as high operating height, difficulty in controlling droplet drift, and easy drift away from the target area to cause pollution.

Method used

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  • Preparation method of special-purpose herbicide for unmanned aerial vehicles for aviation crop protection
  • Preparation method of special-purpose herbicide for unmanned aerial vehicles for aviation crop protection

Examples

Experimental program
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Effect test

Embodiment 1

[0013] Step 1: Add 0.2mol 2-chloronicotinic acid to a dry container, add 100ml xylene as a solvent, slowly add 0.1mol SOCl2 with a dropper at 60°C, slowly raise the temperature to reflux, and magnetically stir for about 6 hours ;

[0014] Step 2: Spot the plate to determine the end point, evaporate the solvent to obtain 2-chloronicotinic acid chloride, seal and store, and proceed to the next reaction;

[0015] Step 3: Add 80ml of methanol (as solvent and reaction raw material) to the prepared dry container, add the acid chloride prepared above dropwise at 60°C, slowly raise the temperature to reflux, and react for 5 hours;

[0016] Step 4: Spot the plate to determine the end point, distill under reduced pressure to remove the remaining solvent, the remaining oily liquid is the product, and the product is obtained;

[0017] Step 5: Mix the product with fentrazone and warfarin at a volume ratio of 3:4:0.5.

Embodiment 2

[0019] Step 1: Add 0.2mol 2-chloronicotinic acid to a dry container, add 100ml xylene as a solvent, slowly add 0.1mol SOCl2 with a dropper at 60°C, slowly raise the temperature to reflux, and magnetically stir for about 6 hours ;

[0020] Step 2: Spot the plate to determine the end point, evaporate the solvent to obtain 2-chloronicotinic acid chloride, seal and store, and proceed to the next reaction;

[0021] Step 3: Add 80ml of methanol (as solvent and reaction raw material) to the prepared dry container, add the acid chloride prepared above dropwise at 60°C, slowly raise the temperature to reflux, and react for 5 hours;

[0022] Step 4: Spot the plate to determine the end point, distill under reduced pressure to remove the remaining solvent, the remaining oily liquid is the product, and the product is obtained;

[0023] Step 5: Mix the product with fentrazone and warfarin at a volume ratio of 4:4:1.

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Abstract

The invention discloses a preparation method of a special-purpose herbicide for unmanned aerial vehicles for aviation crop protection. The preparation method comprises the following steps of step 1: adding 2-chloronicotinic acid into a dry container, adding xylene as a solvent, slowly adding SOCl2 by a dropping pipette at 60 DEG C, slowly raising the temperature till back flow, and performing a magnetic stirring reaction for about 6 hours; step 2: determining an end point by dotting assay, boiling off the solvent to obtain 2-chloronicotinic acid acyl chloride, and performing sealed preservation on the obtained 2-chloronicotinic acid acyl chloride for the next reaction; step 3: preparing a dry container, adding methyl alcohol in the dry container, at 60 DEG C, dropwise adding the 2-chloronicotinic acid acyl chloride prepared in the step 2, slowly raising the temperature till back flow, and performing a reaction for 5 hours; and step 4: determining the end point by the dotting assay, performing reduced pressure distillation to remove residual solvents, obtaining oily liquid, namely the product, and mixing the product with topramezone and warfarin.

Description

technical field [0001] The invention relates to a preparation method of a special herbicide for aerial plant protection drones, belonging to the field of organic synthesis. Background technique [0002] After entering the 21st century, my country proposed sustainable development and the rise of plant protection drones, which have the advantages of large liquid carrying capacity and high spraying operation efficiency, and are suitable for operations such as pest control, sanitation, epidemic prevention, and killing of contiguous large-scale farmland. Existing pesticides also have shortcomings such as high operating height, difficulty in controlling droplet drift, and easy drift away from the target area to cause pollution. Contents of the invention [0003] In view of the problems existing in the above-mentioned prior art, the present invention provides a method for preparing a special herbicide for aerial plant protection drones. The prepared herbicide has a good weeding ef...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N43/80A01N43/40A01N43/16C07D213/80C07D213/803A01P13/00
CPCA01N43/80A01N43/16A01N43/40C07D213/80C07D213/803A01N2300/00
Inventor 程义阚森
Owner 江苏蒲公英无人机有限公司