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Diazinon coated slow-released granule preparation method

A slow-release granule and diazinon-encapsulated technology, which can be applied to botanical equipment and methods, insecticides, acaricides, etc., can solve the problems of low utilization rate and poor effect of diazinon original drug, and achieve good results. Effects of environmental protection, release slowing, and reduction of agricultural production costs

Inactive Publication Date: 2017-06-30
浙江皓翔矿业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of the deficiencies in the prior art, the object of the present invention is to provide a preparation method of diazinon-coated sustained-release granules, and in the obtained diazinon-coated sustained-release granules, diazinon can be slowly and continuously released to In the environment, improve the technical problems of low utilization rate and poor effect of diazinon technical

Method used

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  • Diazinon coated slow-released granule preparation method
  • Diazinon coated slow-released granule preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] A kind of preparation method of diazinon-coated sustained-release granule

[0025] 1. Preparation of a suspension containing diazinon: add 10 g of diazinon to 55 g of water, and then ultrasonically disperse to obtain a suspension containing diazinon.

[0026] 2. Preparation of drug-loaded diatomite particles: first place 40g of dry diatomite particles in a closed container, pump air to make it in a vacuum state and then seal it, then inject the suspension containing diazinon into the container for 3 hours Finally, the vacuum device was opened, and the suspension of diazinon was poured into the pores of the diatomite particles by using the pressure difference between the atmospheric pressure and the vacuum device. After 18 minutes, it was freeze-dried to obtain the drug-loaded diatomite particles.

[0027] 3. Preparation of coating agent: Mix 18g of methylol ethylene urea resin and 7g of sulfonated paraffin evenly, then add 0.4g of calcium ricinoleate and 7g of acetonitr...

Embodiment 2

[0030] A kind of preparation method of diazinon-coated sustained-release granule

[0031] 1. Preparation of a suspension containing diazinon: add 10 g of diazinon into 46 g of water, and then ultrasonically disperse to obtain a suspension containing diazinon.

[0032] 2. Preparation of drug-loaded diatomite particles: first place 68g of dried diatomite particles in an airtight container, pump air to make it in a vacuum state and then seal it, then inject the suspension containing diazinon into the container for 2.5 After one hour, the vacuum device was opened, and the suspension of diazinon was poured into the pores of the diatomite particles by using the pressure difference between the atmospheric pressure and the vacuum device. After 20 minutes, the drug-loaded diatomite particles were obtained by freeze-drying.

[0033] 3. Preparation of coating agent: Mix 15g of polyvinyl alcohol urea phosphate and 10g of chlorinated paraffin evenly, then add 0.6g of epoxy soybean oil and ...

Embodiment 3

[0036] A kind of preparation method of diazinon-coated sustained-release granule

[0037] 1. Preparation of a suspension containing diazinon: add 10 g of diazinon into 22-67 g of water, and then disperse ultrasonically to obtain a suspension containing diazinon.

[0038] 2. Preparation of drug-loaded diatomite particles: first place 32g of dry diatomite particles in an airtight container, pump air to make it in a vacuum state and then seal it, then inject the suspension containing diazinon into the container for 2 hours Finally, the vacuum device was opened, and the suspension of diazinon was poured into the pores of the diatomite particles by using the pressure difference between the atmospheric pressure and the vacuum device. After 10 minutes, the drug-loaded diatomite particles were obtained by freeze-drying.

[0039] 3. Preparation of a compound containing diazinon: 2 g of diazinon, 15 g of pyrophyllite, 5 g of polyvinyl alcohol, 1 g of polyoxyethylene sorbitan monooleate,...

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Abstract

The invention discloses a diazinon coated slow-released granule preparation method which mainly includes the steps: preparing suspension liquid containing diazinon; preparing diatomite granules loading pesticides; preparing coating agents and coatings. According to the method, the suspension liquid of the diazinon is injected into holes of the diatomite granules, diazinon molecules adhere in the holes of the diatomite granules through Van der Waals force, explosion of the pesticides is avoided, the outsides of the diatomite granules loading the pesticides are coated, and release of the diazinon is further slowed. Compared with original pesticides, diazinon coated slow-released granules prepared by the method have the advantages of slow release and long effect, application amount is greatly reduced, use ratio is greatly improved, effects of the original pesticides preventing diseases and insect pests can be improved, agricultural production cost is reduced, environmental pollution caused by the pesticides can be reduced or avoided, and the diazinon coated slow-released granule has good environmental protection effect.

Description

technical field [0001] The invention relates to the field of pesticide preparations, in particular to a preparation method of diazinon-coated sustained-release granules. Background technique [0002] Pesticides are an important material basis for defending against major biological disasters, ensuring national food production, and promoting the sustainable and stable growth of agricultural product output. The effective utilization rate of conventional pesticides is only 20-30%, while the loss rate through various channels is as high as 50-60%. This is not only a waste economically, but also causes environmental pollution. In the 1960s, due to the development of environmental protection science, in order to avoid the pollution of the environment and crops caused by the drift of pesticide powder when spraying, pesticide granules have been widely promoted and applied all over the world. Compared with commonly used pesticides, they have the following advantages: 1. There is a dir...

Claims

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Application Information

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IPC IPC(8): A01N25/26A01N57/16A01P7/04A01P7/02
CPCA01N25/26A01N57/16
Inventor 苏月斌
Owner 浙江皓翔矿业有限公司
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