Thiacloprid microcapsule powder agent, suspending agent and preparation method and application thereof

A technology of microcapsule suspension and microcapsule powder, which is applied in the field of prevention and control of pine wood nematode, an important forest pest, can solve the problems of pesticide pollution, bird death, and destruction of the ecological environment, and achieve low environmental pollution, good drug effect and high economy value effect

Inactive Publication Date: 2010-06-23
吴学民
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to a large number of repeated application of pesticides, it also caused serious pesticide pollution, resulting in the death of a large number of birds and destroying the ecological environment.

Method used

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  • Thiacloprid microcapsule powder agent, suspending agent and preparation method and application thereof
  • Thiacloprid microcapsule powder agent, suspending agent and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0067] 5kg thiacloprid former drug 20kg polyvinyl alcohol was dissolved in 200kg ethyl acetate;

[0068] Dissolve 10kg of calcium dodecylbenzenesulfonate in 800kg of distilled water;

[0069] Slowly add the organic phase containing thiacloprid original drug and high molecular polymer into the aqueous solution of emulsifier under stirring, after the addition is complete, continue to stir and react for 30 minutes;

[0070] Raise the temperature to 80-100°C, react for 10-20 hours, and solidify into capsules;

[0071] Centrifuge the obtained reaction liquid, filter it with suction, take 10 kg of the obtained solid after drying, mix it with 10 kg of white carbon black, 3 kg of sodium lignosulfonate, 1 kg of sodium dodecylsulfonate, 4 kg of gelatin, and 72 kg of kaolin, and then pulverize it.

[0072] The physicochemical parameters of the preparation are as follows

[0073] project

index

Thiacloprid content, %(m / m)≥

1.0

Average particle size, (μm)≤ ...

Embodiment 2

[0083] 5kg thiacloprid former drug 20kg polyvinyl alcohol was dissolved in 200kg ethyl acetate;

[0084] Dissolve 10kg of calcium dodecylbenzenesulfonate in 200kg of distilled water;

[0085] Slowly add the organic phase containing thiacloprid original drug and high molecular polymer into the aqueous solution of emulsifier under stirring, after the addition is complete, continue to stir and react for 30 minutes;

[0086] Raise the temperature to 80-100°C, react for 10-20 hours, and solidify into capsules;

[0087] Take 239.5kg of reaction solution, add 5kgSC-02, 5kgSC-04, 0.5kg xanthan gum and continue to stir for 2 hours to make it evenly mixed.

[0088] Like Example 1, the microcapsule suspension obtained in this example also has excellent physicochemical properties and sustained release effect.

[0089] The control effect of this preparation and 4.5% beta-cypermethrin EC is as follows

[0090]

[0091] It can be seen that the microcapsule suspension also has a good lo...

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Abstract

The invention relates to a control technology specially used for preventing and controlling important forest pest bursaphelenchus xylophilus (monochamus alternatus), namely a microcapsule powder agent or a microcapsule suspending agent prepared by a highly-efficient, harmfulless and less-persistent neonicotinoid insecticide thiacloprid sustained-release preparation and assisted by a high-adhesionadhesive is adopted for prevention and control. The technology adopts an innocuous and degradable carrier as shell materials, is safe to environment, has excellent durable effect and solves the greatproblems of bursaphelenchus xylophilus prevention and control and chemical pesticide pollution.

Description

technical field [0001] The invention relates to a high-efficiency, low-toxicity, low-residue neonicotinoid insecticide thiacloprid microcapsule powder, microcapsule suspension and its preparation method and the use of the thiacloprid microcapsule powder and microcapsule suspension The application of preventing and controlling the important forest pest pine wood nematode (Alien monochamus). Background technique [0002] Pine wood nematode [Buraphelenchus xylophilus (Steiner and Buhrer)] is a forest disease and insect pest transmitted by the vector insect Monochamus alternatus (Monochamus alternatus) adults, and it is a devastating disaster that harms pine trees. Initially, the disease mainly Distributed in the United States, Canada, Japan and other countries. In 1982, pine xylophilus was first found on dead black pine near Nanjing Sun Yat-sen Mausoleum in my country, and then successively found in some areas of Jiangsu, Anhui, Guangdong and other places, as well as Hong Kong...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N25/28A01N47/40A01N25/12A01N25/04A01P7/04A01P5/00B01J13/16
Inventor 吴学民徐妍
Owner 吴学民
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