Microcapsule suspension containing both difenoconazole and imidacloprid and preparation method thereof
A technology of imidacloprid and difenoconazole, which is applied in the field of compound pesticides, can solve the problems of inability to protect crops, insufficient insecticidal spectrum, and easy to produce drug resistance, and achieve low cost, pollution reduction, storage and transportation. and safe use
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Embodiment 1
[0030] Example 1: 5% difenoconazole imidacloprid microcapsule suspension
[0031] Weigh 0.5 g of difenoconazole and 4.5 g of imidacloprid in a three-necked flask equipped with a thermometer and a stirring device, first add 1 g of cyclohexanone to dissolve, then add 0.25 g of polypropyl polymethylene polyisocyanate, 0.25 1g of isopropyl myristate, 0.5g of butanediol and 0.5g of polyvinyl alcohol were stirred evenly to make an oily solution; Cut it off and add it to the above oily solution to react for 1 hour, then raise the temperature to 50°C, and carry out polymerization under stirring. After reacting for 2 hours, cool down to room temperature, then add 0.5g of ethylenediamine, and stir evenly to obtain 5% difenoconazole imidacloprid microcapsule suspension.
Embodiment 2
[0032] Example 2: 15% difenoconazole imidacloprid microcapsule suspension
[0033] Weigh 1 g of difenoconazole and 14 g of imidacloprid in a three-neck flask equipped with a thermometer and a stirring device, first add 10 g of xylene and 2 g of DMF to dissolve, then add 3 g of isopropyl myristate, 2 g of alkyl Diisocyanate, 0.5g suberic acid and 0.5g polyvinylpyrrolidone, stir well to prepare an oily solution: add 5g polyoxyethylene polyoxypropylene block copolymer, 0.5g gum arabic to 59.5g water and stir evenly to form an aqueous solution, Cut it off and add it to the above oily solution to react for 3 hours, then raise the temperature to 50°C, and carry out polymerization under stirring. After reacting for 2 hours, cool down to room temperature, then add 1g triethylenetetramine and 1g polyvinyl alcohol, and stir evenly to obtain 15% phenyl ether Mecloconazole imidacloprid microcapsule suspension.
Embodiment 3
[0034] Example 3: 25% difenoconazole imidacloprid microcapsule suspension
[0035] Weigh 1 g of difenoconazole and 24 g of imidacloprid in a three-necked flask equipped with a thermometer and a stirring device, first add 11 g of ethanol and 3 g of DMF to dissolve, then add 2 g of isopropyl myristate, 3 g of alkyl diacetate Isocyanate, 0.5g of suberic acid and 0.5g of polyvinylpyrrolidone were stirred evenly to prepare an oily solution: 5g of polyoxyethylene polyoxypropylene block copolymerization and 0.5g of polyvinyl alcohol were added to 48.5g of water and stirred evenly to form an aqueous solution. Cut it off and add it to the above oily solution to react for 3 hours, then raise the temperature to 50°C, polymerize under stirring, react for 2 hours and then cool down to room temperature, then add 0.5g triethanolamine and 0.5g sodium lignosulfonate, stir well to get 25% Difenoconazole imidacloprid microcapsule suspension.
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