Pesticide water suspending nano capsule prepn and its preparing method

A technology for nanocapsules and pesticides, which is applied to the formulation of veterinary drugs and pesticides, can solve the problems of waste of resources, decomposition and waste, and low effective utilization rate, and achieve the effects of being beneficial to the ecological environment, improving stability, and improving utilization rate.

Inactive Publication Date: 2004-04-28
HEBEI UNIVERSITY OF SCIENCE AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] 1. Contains a large amount of organic solvents, such as toluene, xylene, etc., causing thousands of tons of organic solvents to be discharged into nature every year, wasting resources and seriously polluting the environment
[0004] 2. When used, it needs to be diluted with water to form an emulsion. The active ingredients are micron-scale dispersed. The dispersibility of the active ingredients is poor and the effective utilization rate is low, resulting in a large amount of pesticides, resulting in increased agricultural costs and a large number of pesticide residues, which seriously affects the quality of agricultural products.
[0005] 3. The active ingred...

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0056] 0.1g ammonium persulfate is dissolved in 20g water (divided into two parts by 4:1), stand-by; 0.5g pesticide active substance is dissolved in the mixed monomer of 7g styrene, 8g butyl acrylate, 0.2g acrylic acid; Dissolve 6g of OP-40 and 1g of sodium lauryl sulfate in 50g of 2% polyvinyl alcohol aqueous solution, put it into a stirring container, add the mixed monomers with pesticide active substances under stirring, and disperse into an emulsion , into the reaction vessel. Heat to keep the temperature at 70±2°C, add the first part of initiator, react for 6 hours, keep warm for 1 hour, and prepare the seed emulsion; add 1.5g of styrene, 1.5g of butyl acrylate, 2g of toluene diisocyanate mixed monomer and Add the second initiator dropwise for 1 hour, keep warm for 2 hours, cool down; add additives, and discharge. The content of pesticide active substance in the product is 0.5%.

Embodiment 2

[0058]Dissolve 0.1g potassium persulfate in 10g water (divided into two parts according to 4:1), 1g acrylamide is dissolved in 10g water, stand-by; dissolve 1g pesticide active substance in 4g ethyl acrylate 7g butyl acrylate mixed monomer In; 5g OP-40, 4g sodium lauryl sulfate, 4g sodium polymethacrylate are dissolved in 60g water, put into a container with stirring, under stirring, add the mixed monomer that is dissolved in pesticide active matter, Disperse into an emulsion and put it into a reaction vessel. Heat and keep the temperature at 70±2°C, add the first initiator and acrylamide aqueous solution, react for 6 hours, keep warm for 1 hour, and prepare the seed emulsion; add 1g ethyl acrylate, 1g butyl acrylate, 2g 4,4' - diphenylmethane diisocyanate mixed monomer, dropwise for 1 hour, keep warm for 2 hours, cool down; add additives, discharge. The content of pesticide active substance in the product is 0.9%.

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PUM

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Abstract

The present invention discloses water suspended nano pesticide capsule preparation prepared via emulsion polymerization process. It has capsule shell of styrene, isocyanate, acrylate and methacrylate copolymer, and core comprising ididacloprid, high effect cypermethrin or diflubenzuron as effective component; contains pesticide 0.2-5 wt%, capsule shell 5-30 wt%, additive 10-35 wt% and water in proper proportion. The nano capsule is disersive spherical particle of size smaller than 100 nm. Compared with traditional pesticide preparation forms, the present invention has the features of water based solvent, nano level dispersive effective component, high stability, etc. and may be used in killing various pests of fruit tree, vegetable, flower, cotton, tobacco, etc.

Description

technical field [0001] The invention relates to a pesticide water-suspended nanocapsule, which belongs to the formulation technology of pesticides and veterinary drugs. Background technique [0002] Pesticide is a product obtained after chemical transformation of abamectin, and it is a semi-synthetic antibiotic pesticide pesticide. The efficacy against lepidopteran pests is significantly improved and the toxicity is lower than that of abamectin, and it is a new type of biological pesticide. Pesticide benzoate insecticide has the characteristics of ultra-high efficiency, non-toxic, pollution-free, double insect lethality, and less affected by environmental factors. Compared with other series products of abamectin, the activity against the thorny Lepidoptera pests in the agricultural world has increased by 1-3 orders of magnitude, and it can be used on economic crops such as vegetables, tobacco, and tea. The dosage is about 2-grams per hectare, which has a good control effec...

Claims

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Application Information

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IPC IPC(8): A01N25/28
Inventor 郑和堂尚青
Owner HEBEI UNIVERSITY OF SCIENCE AND TECHNOLOGY
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