Pesticide microcapsule suspension and processing method thereof
A technology of microcapsule suspension and processing method, which is applied in the direction of botany equipment and methods, chemicals for biological control, biocides, etc., can solve the problems of difficult degradation of polyurethane wall materials and environmental pollution, and achieve the reduction of human body and environment. harm, high coverage rate, wide range of applicable objects
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[0038] Example 1:
[0039] 100 parts of diphenylmethane diisocyanate, 20 parts of hydroxyethyl acrylate and 200 parts of polycaprolactone diol were stirred and reacted at 90°C for 1 hour, and then 2000 parts of ethyl acetate were added to prepare a solution. 100 parts of abamectin were dissolved in the above ethyl acetate solution to obtain an oil phase. 160 parts of Tween, 40 parts of Span, 12 parts of glycerol, 0.2 parts of N,N'-methylenebisacrylamide and 0.08 parts of potassium persulfate are dissolved in 5000 parts of water to obtain an aqueous phase. Add the oil phase to the water phase, stir and emulsify at a high speed at 50°C for 1 minute to obtain an emulsion. The emulsion was stirred and reacted at 70° C. for 0.1 hour to obtain the abamectin microcapsule suspension.
[0040] In this example, the pesticide coating rate of the microcapsules was 82.0%, and the degradation time of the polyurethane wall material was 173 days.
Example Embodiment
[0041] Example 2:
[0042] 80 parts of toluene diisocyanate, 50 parts of hydroxyethyl acrylate and 220 parts of polybutylene adipate diol were stirred and reacted at 50° C. for 10 hours, and then 1800 parts of ethyl acetate were added to make a solution. Dissolve 100 parts of malathion in the above ethyl acetate solution to obtain an oil phase. Dissolve 160 parts of nonylphenol polyoxyethylene ether, 20 parts of fatty alcohol polyoxyethylene ether, 15 parts of diethylene triamine, 0.5 part of N,N'-methylenebisacrylamide and 0.12 part of potassium persulfate in 4000 parts The water phase is obtained in the water. Add the oil phase to the water phase, stir and emulsify at high speed at 20°C for 120 minutes to obtain an emulsion. The emulsion was stirred and reacted at 20°C for 10 hours to obtain a malathion microcapsule suspension.
[0043] In this example, the pesticide coating rate of the microcapsules was 84.2%, and the degradation time of the polyurethane wall material was 61 ...
Example Embodiment
[0044] Example 3:
[0045] 100 parts of isophorone diisocyanate, 2 parts of hydroxyethyl acrylate and 400 parts of polytetrahydrofuran ether glycol were stirred and reacted at 90°C for 4 hours, and then 1000 parts of ethyl acetate were added to make a solution. 85 parts of phoxim were dissolved in the ethyl acetate solution to obtain an oil phase. 300 parts of fatty alcohol polyoxyethylene ether, 30 parts of pentaerythritol, 0.1 part of N,N'-methylenebisacrylamide and 0.05 part of potassium persulfate are dissolved in 1800 parts of water to obtain an aqueous phase. Add the oil phase to the water phase, stir and emulsify at 35°C for 15 minutes at high speed to obtain an emulsion. The emulsion was stirred and reacted at 65°C for 6.5 hours to obtain a phoxim microcapsule suspension.
[0046] In this example, the pesticide coating rate of the microcapsules was 92.7%, and the degradation time of the polyurethane wall material was 272 days.
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