Avermectin B2a microcapsule granules and a preparing method thereof

A technology of microencapsulated granules and abamectin, which is applied in botany equipment and methods, insecticides, biocides, etc., and can solve problems such as complicated granule preparation methods, waste of manpower and energy resources, and dust pollution , to achieve the effect of solving energy consumption and pollution problems, reducing transportation costs and improving quality

Inactive Publication Date: 2017-11-10
HEBEI VEYONG BIO CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Modern pesticides are changing rapidly and are developing in the direction of green environmental protection. Granules are one of them, but the preparation methods of conventional granules are complicated, one is wet granulation, and the other is dry susp

Method used

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  • Avermectin B2a microcapsule granules and a preparing method thereof
  • Avermectin B2a microcapsule granules and a preparing method thereof
  • Avermectin B2a microcapsule granules and a preparing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0024] Example 1

[0025] Add 20 grams of water and 2 grams of microcapsule sustained-release agent carbomer into a stirred reactor, stir evenly to form a capsule shell, and then add 10 grams of dispersant lignosulfonate and wetting agent sodium lauryl sulfate 10 grams, stir evenly, add 1 gram of abamectin B2a original drug, stir evenly, perform high-speed shearing at 20,000 rpm for 20 minutes, so that the microcapsules can fully encapsulate the abamectin B2a original drug. Then add it to 957 grams of red sand that is stirred and stir evenly to obtain 0.1% Abamectin B2a microcapsule granules, which is recorded as sample 1.

Example Embodiment

[0026] Example 2

[0027] Add 50 grams of water and 30 grams of microcapsule sustained-release agent carbomer into a stirred reactor, stir evenly to form a capsule shell, and then add 20 grams of dispersant polycarboxylate and wetting agent dodecylbenzene sulfonic acid 15 grams of calcium, stir well, add 100 grams of abamectin B2a original drug and stir evenly, and perform high-speed shearing at 20,000 rpm for 25 minutes to make the microcapsule fully encapsulate the abamectin B2a original drug, and then add the stirring red In 785 grams of sand, stir evenly to obtain 10% Abamectin B2a microcapsule granules, which is recorded as sample 2.

Example Embodiment

[0028] Example 3:

[0029] Add 100 grams of water and 50 grams of microcapsule sustained-release agent carbomer into a stirred reactor, stir evenly to form a capsule shell, and then add 30 grams of dispersant alkylbenzene sulfonate calcium salt and alkyl naphthalene sulfonate 20 grams, stir evenly, add 200 grams of abamectin B2a original drug, stir evenly, perform high-speed shearing at 20000 rpm for 40 minutes, so that the microcapsules can fully encapsulate the abamectin B2a original drug, and then add it to the stirring red In 600 grams of sand, stir evenly to obtain 20% abamectin B2a microcapsule granules, which is recorded as sample 3.

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PUM

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Abstract

The invention relates to avermectin B2a microcapsule granules. The microcapsule granules include, by weight, 0.1-20% of avermectin B2a, 2-5% of a microcapsule slow-release agent, 1-3% of a dispersant, 1-2% of a wetting agent and 2-10% of water, with the balance being a filler. A preparing method of the granules is also provided. The method includes adding the water and the microcapsule slow-release agent in prepared amounts into a container, fully stirring the mixture until a capsule shell is formed, then adding the dispersant and the wetting agent into the mixture, stirring the mixture, then adding the avermectin B2a that is an active compound, fully stirring the mixture, then performing high-speed shearing for 20 min or above to allow the avermectin B2a to be fully covered with the microcapsule slow-release agent, then adding the product into red sand under stirring, and fully stirring the mixture to obtain granules. The granules have characteristics of a wide spectrum, a high efficiency, a long period of preserving effects, low toxicity and safety.

Description

technical field [0001] The invention belongs to the technical field of pesticide production, in particular to a method for preparing abamectin B2a microcapsule granules. Background technique [0002] Abamectin is a macrolide disaccharide compound, which has contact killing and stomach poisoning effects, and has strong penetrating power. Abamectin is a 16-membered macrolide insecticidal natural product produced by Streptomyces fermentation. A large component of the homologue B1 and its derivatives have been commercialized, but at the same time, they have also derived pesticide resistance Due to the large amount of pesticide used by farmers, the resistance of crop pests is stronger, so the control effect of single-dose pesticide products of Abamectin B1 is getting lower and lower. Another major component of abamectin homologue, B2a, has a higher toxicity activity to some arthropods and non-digestive nematodes than B1, especially to corn root-eating nematodes and yellow powder...

Claims

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Application Information

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IPC IPC(8): A01N43/90A01N25/28A01N25/12A01N25/08A01P5/00A01P7/04
CPCA01N25/08A01N25/12A01N25/28A01N43/90
Inventor 焦俊超蒲平
Owner HEBEI VEYONG BIO CHEM
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