Water suspension acetamiprid nano capsule prepn and its preparing method

Abstract

The present invention discloses a water suspended nano acetamiprid capsule preparation prepared via emulsion polymerization process. It has capsule shell of styrene, isocyanate, acrylate and methacrylate copolymer, and core comprising biologically originated pesticide and animal remedy acetamiprid as effective component; contains acetamiprid 0.5-5 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 animalí»s parasite and various pests of fruit tree, vegetable, flower, cotton, tobacco, etc.

Description

technical field [0001] The invention relates to acetamiprid water-suspended nanocapsules, which belongs to the pesticide preparation technology. Background technique [0002] Acetamiprid is a new generation of ultra-efficient, systemic insecticides that came out in the 1990s, and it belongs to the chlornicotine compound. It has contact and stomach poisoning effects on pests, and its insecticidal mechanism is novel. It can effectively control various pests such as Hemiptera, Lepidoptera, and Coleoptera. It has high activity, small dosage, long-lasting effect, and good quick-acting properties Advantages, especially for pests that have developed severe resistance to organophosphate, carbamate and pyrethroid insecticides. The main dosage form is emulsifiable concentrate. As a traditional dosage form of pesticides, the control effect is acceptable, but there are the following problems: [0003] 1. Contains a large amount of organic solvents, such as toluene, xylene, etc., causi...

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 concentrate, the microemulsion of acetamiprid can better solve the problems of water-based and high dispersion, but it is not a long-acting dosage form, and the release cannot be controlled. More importantly, the cost is high and the effect is not ideal