Avermectins long-effective slow-release oil suspension agent and preparing method

A technology of abamectin and oil suspension, which is applied in the field of abamectin long-acting slow-release oil suspension and its preparation, can solve the problems of environmental pollution, non-biodegradable, etc., and achieve pollution reduction, pesticide cost reduction and , the effect of improving the utilization rate

Inactive Publication Date: 2007-06-13
BEIJING UNIV OF CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Traditional controlled-release carriers are mostly polymer compounds, which have the disadvantages of non-biodegradable and polluting the environment.

Method used

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  • Avermectins long-effective slow-release oil suspension agent and preparing method
  • Avermectins long-effective slow-release oil suspension agent and preparing method
  • Avermectins long-effective slow-release oil suspension agent and preparing method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0058] Embodiment 1: 1.8% Abamectin long-acting slow-release oil suspension

[0059] Prepare the nano-calcium carbonate suspension (concentration is determined by volumetric analysis) with a mass percentage concentration of 8%, and set it aside. Measure 500 mL of the suspension, and add 10 g of cationic surfactant cetyltrimethylammonium bromide (CTAB), mix with the calcium carbonate suspension and disperse evenly. Accurately prepare a sodium silicate solution containing 1% silicon dioxide, measure 300 mL of sodium silicate solution, so that the mass percentage of silicon dioxide / calcium carbonate in the suspension is 15%. The temperature of the suspension is raised to 80°C, and the sodium silicate solution is evenly added to the calcium carbonate suspension within 2 hours, and the pH is adjusted and maintained at about 12 with hydrochloric acid with a mass percentage of 10%, and the addition is completed and aged for 2 hours. It is suction filtered, dried at a temperature of ...

Embodiment 2

[0061] Embodiment 2: 1.8% Abamectin long-acting slow-release oil suspension

[0062] Prepare the nano-calcium carbonate suspension (concentration is determined by volumetric analysis) with a mass percentage concentration of 8%, and set it aside. Measure 500 mL of the suspension, and add 10 g of cationic surfactant cetyltrimethylammonium bromide (CTAB), mix with the calcium carbonate suspension and disperse evenly. Accurately prepare a sodium silicate solution containing 2% silica, and measure 400 mL of the sodium silicate solution so that the mass percentage of silica / calcium carbonate in the suspension is 40%. The temperature of the suspension is raised to 80°C, and the sodium silicate solution is evenly added to the calcium carbonate suspension within 2 hours, and the pH is adjusted and maintained at about 12 with hydrochloric acid with a mass percentage of 10%, and the addition is completed and aged for 2 hours. It is suction filtered, dried at a temperature of 100°C, and ...

Embodiment 3

[0064] Embodiment 3: 4% Abamectin long-acting slow-release oil suspension

[0065] 5.0g Abamectin is dissolved in 15mL acetone solvent, is made into the Abamectin acetone solution of 0.33g / mL, stand-by; Take by weighing the hollow porous nano-SiO of 5.0g embodiment 1 2 The controlled-release carrier was activated for 8 hours at a temperature of 100°C and a vacuum of 0.1 MPa; the activated hollow porous SiO 2 Nanoparticles were added to the prepared 0.33g / mL abamectin acetone solution, placed in a high-pressure embedding device, embedded for 6 hours under the supercritical conditions of pressure 20.0MPa and temperature 40°C, and the samples were dried. The hollow porous nano-SiO with 40.0% abamectin embedded 2 Carrier mixture, ready for use; weigh 10g of abamectin nano-controlled release agent and 40.2g of isopropanol and put them into a ball mill for ball milling, pulverize until the average particle size of the particles is less than 60 microns, and then add 25g of emulsifie...

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Abstract

The present invention relates to a long-acting slow release abamectin oil miscible flowable concentrate, belonging to the field of pesticide technology, mainly for controlling pests. Said invention is made up by using hollow porous SiO2 as controlled release carrier, using abamectin as active component and adding other adjuvant through a certain preparation process.

Description

Technical field: [0001] The invention relates to an abamectin long-acting slow-release oil suspension and a preparation method thereof. It belongs to the field of pesticides and is mainly used for pest control. Background technique: [0002] Abamectin is a biogenic pesticide produced by microbial fermentation, purification and other processes. It has contact and stomach poisoning effects on mites and insects. Its mechanism of action is mainly to interfere with the neurophysiological activities of pests, stimulate the release of γ-aminobutyric acid, and inhibit the conduction of nerve impulses in insects. It has a certain penetration effect on the leaves of plant tissues, is easy to be biodegraded, and has no accumulation in the environment. The characteristics of high efficiency, less dosage, low residue, and less resistance to pesticides determine that it will play an important role in the prevention and control of crop pests and diseases. [0003] When traditional chemi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N43/90A01N25/02
Inventor 文利雄王青陈建峰
Owner BEIJING UNIV OF CHEM TECH
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