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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 suspension
Wet granulation is to crush the raw materials used first, which will cause dust pollution to the finished product, and then knead and granulate, which wastes manpower and energy resources.
Dry suspension is environmentally friendly, but consumes more energy

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

Embodiment 1

[0025] Add 20 grams of water and 2 grams of microcapsule slow-release agent carbomer into a stirred reactor, stir evenly to form a capsule shell, then add 10 grams of dispersant lignosulfonate and wetting agent sodium lauryl sulfate 10 grams, stirred evenly, added 1 gram of the original drug of Abamectin B2a, stirred evenly, and carried out high-speed shearing at 20,000 rpm for 20 minutes to make the microcapsules fully wrap the former drug of Abamectin B2a. Add then in the red sand 957 grams that stirs, stir, can obtain 0.1% Abamectin B2a microcapsule granule, record as sample one.

Embodiment 2

[0027] Add 50 grams of water and 30 grams of microcapsule slow-release agent carbomer in a stirred reactor, stir evenly to form a capsule shell, then add 20 grams of dispersant polycarboxylate and wetting agent dodecylbenzenesulfonic acid 15 grams of calcium, stir evenly, add 100 grams of Abamectin B2a original drug and stir evenly, perform high-speed shearing at 20,000 rpm for 25 minutes, so that the microcapsules can fully wrap the Abamectin B2a original drug, and then add the stirred red In 785 grams of sand, stir evenly, can obtain 10% avermectin B2a microcapsule granule, record as sample two.

Embodiment 3

[0029] Add 100 grams of water and 50 grams of microcapsule slow-release agent carbomer into a stirring reactor, stir evenly to form a capsule shell, then add 30 grams of dispersant calcium salt of alkylbenzenesulfonate and alkylnaphthalenesulfonate 20 grams, stir evenly, add 200 grams of Abamectin B2a original drug, stir evenly, perform high-speed shearing at 20,000 rpm for 40 minutes, so that the microcapsules can fully wrap the Abamectin B2a original drug, and then add it to the stirred red In 600 grams of sand, stir evenly, can obtain 20% avermectin B2a microcapsule granule, record as sample three.

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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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