Pesticide water suspending nano capsule prepn and its preparing method

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...

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 ingredients have poor permeability, and the active ingredients remaining on the leaves are decomposed and wasted due to environmental factors such as light and air.

[0006] 4. The colonization of biological pesticides in the soil is poor, and the special ecological environment of the soil often inhibits the efficacy of biological pesticides, which limits the large-scale promotion of biological pesticides

[0007] Compared with emulsifiable concentrates, microemulsions of pesticides can better solve the problems of water-based and high dispersion, but they are not long-acting dosage forms and cannot control release. More importantly, the cost is high and the effect is not ideal