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Preparation method of double-microcapsule longhorn beetle insecticide

A technology of microencapsulated longhorn beetle and insecticide, which is applied in the fields of insecticide, botanical equipment and method, biocide, etc., can solve the problems of uneconomical environmental protection, long preparation time, and high cost of tree trunk injection, and achieves enhanced killing. The effect of the extinction effect

Inactive Publication Date: 2020-11-24
CHONGQING ZON BON PHARMACY +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the cost of tree trunk injection is high, the preparation time is long, and it is not economical and environmentally friendly. It can be effective for the preservation of ancient and famous trees and small-area gardens, but it is difficult to implement for large-scale control.

Method used

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  • Preparation method of double-microcapsule longhorn beetle insecticide
  • Preparation method of double-microcapsule longhorn beetle insecticide

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030]Step 1, preparation of thiacloprid sustained-release microcapsule suspension

[0031] (1) Add 5Kg of urea and 2.5Kg of formaldehyde into the reaction kettle for mixed reaction. At a temperature of 50°C and a rotation speed of 30r / min, adjust the pH of the mixed solution to 8 with an ammonia solution and react for 1 hour to make a prepolymer of the capsule wall .

[0032] (2) 5Kg capsule wall prepolymer, 0.1Kg emulsifier and 30Kg deionized water were mixed, stirred at 200r / min for 4min to form a uniform aqueous solution; 25Kg of thiacloprid oil suspension capsule core was added to the above-mentioned In the homogeneous aqueous solution, use a high-speed shearer to shear at a speed of 800r / min for 3min, then transfer it to an ordinary stirring tank, stir at a speed of 200r / min, and within 30 minutes, use a hydrochloric acid solution with a concentration of 5%. Adjust the pH to 1, then stir the obtained emulsion at 50°C at a speed of 200r / min, react for 2h, and finally sti...

Embodiment 2

[0037] Step 1, preparation of thiacloprid sustained-release microcapsule suspension

[0038] (1) Add 5Kg of urea and 7.5Kg of formaldehyde into the reaction kettle for mixed reaction. At a temperature of 80°C and a rotational speed of 130r / min, adjust the pH of the mixed solution to 12 with ammonia solution and react for 5 hours to make a prepolymer of the capsule wall .

[0039] (2) 5Kg capsule wall prepolymer, 1Kg emulsifier and 60Kg deionized water are mixed, stirred at 300r / min for 7min to form a uniform aqueous solution; 10Kg of thiacloprid oil suspension capsule core is added to the above-mentioned In the homogeneous aqueous solution, use a high-speed shearing machine to cut at a speed of 1500r / min for 5min, then transfer it to an ordinary stirring tank, stir at a speed of 300r / min, and adjust it with a 5% hydrochloric acid solution within 120 minutes pH to 5, then stir the obtained emulsion at 60°C at 300r / min, react for 3h, and finally stir the reacted emulsion at 300...

Embodiment 3

[0044] Step 1, preparation of thiacloprid sustained-release microcapsule suspension

[0045] (1) Add 5Kg of urea and 5Kg of formaldehyde into the reaction kettle for mixed reaction. At a temperature of 65°C and a rotational speed of 80r / min, adjust the pH of the mixed solution to 10 with ammonia solution, and react for 3 hours to prepare a cyst wall prepolymer.

[0046] (2) 5Kg capsule wall prepolymer, 0.5Kg emulsifier and 45Kg deionized water are mixed, stirred at 250r / min for 5min to form a uniform aqueous solution; the thiacloprid oil suspension capsule core of 14.3Kg is added to In the above-mentioned homogeneous aqueous solution, use a high-speed shearing machine to shear at a speed of 1100r / min for 4min, then transfer it to an ordinary stirred tank, stir at a speed of 250r / min, and within 75 minutes, use a concentration of 5% hydrochloric acid Adjust the pH of the solution to 3, then stir the obtained emulsion at 55°C at a speed of 250r / min, react for 2.5h, and finally s...

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Abstract

The invention relates to a preparation method of a double-microcapsule longhorn beetle insecticide for killing longhorn beetles. The preparation method comprises the following steps of preparing a thiacloprid slow-release microcapsule suspending agent and a bifenthrin microcapsule suspending agent, and then mixing and stirring the bifenthrin microcapsule suspending agent and the thiacloprid slow-release microcapsule suspending agent according to a mass ratio of 1:(2-8). The insecticide prepared by the method has relatively good killing effect and prevention and treatment effect on the longhornbeetles.

Description

technical field [0001] The invention relates to a method for preparing pesticides, in particular to a method for preparing insecticides for killing long beetles. Background technique [0002] Beetle is an insect of Coleoptera in the phylum Arthropoda, with chewing mouthparts, and is a major forestry pest in my country. There are many types of longhorn beetles. There are 22,000 known species in the world, and about 2,200 kinds in China. They are widely distributed and cause widespread damage. Almost every kind of tree is affected by different kinds of longhorn beetles. As for the trees that suffered more, there were 28 kinds of longicorns like mulberry, 25 kinds of willow and poplar, 18 kinds of citrus, and 23 kinds of pine. Among the beetles with the largest number and the most common ones, besides the star beetle and the mulberry beetle, there are also long-shouldered beetles, pink-necked beetles, white-veined beetles, red-edge beetles, cloud-spotted white-striped beetles,...

Claims

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Application Information

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IPC IPC(8): A01N53/06A01N47/40A01N25/28A01N25/04A01P7/04
CPCA01N25/04A01N25/28A01N47/40A01N53/00
Inventor 张灿峰钱坤周群文梅刚李泽舟陈小霞牛亚伟
Owner CHONGQING ZON BON PHARMACY