Flusilazole microcapsule suspension and preparation method thereof
A technology of flusilazole microcapsules and suspensions, which is applied in the field of agricultural fungicides and its preparation, can solve the problems of short duration of flusilazole prevention and control of germs, consumption of petrochemical resources, environmental pressure, etc., and achieve environmental protection, sterilization Insect effect is good and performance is stable
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Embodiment 1
[0028] Example 1: 10% flusilazole microcapsule suspension.
[0029] Preparation method of urea-formaldehyde resin prepolymer aqueous solution: dissolve urea into formaldehyde, the weight ratio of urea and formaldehyde is 1:1.5, adjust the pH value to 8 with sodium hydroxide, stir at a low speed at a temperature of 80°C, and keep warm for 1 hours, a viscous and transparent urea-formaldehyde resin is generated, and deionized water equal to the total weight of urea and formaldehyde is added, and stirred at a low speed to obtain a transparent urea-formaldehyde resin prepolymer aqueous solution.
[0030] Dissolve 10% flusilazole completely in 5% xylene at room temperature, add 5% emulsifier alkylphenol polyoxyethylene ether and appropriate amount of deionized water while stirring, and shear at 2000 rpm After 20 minutes, a stable O / W emulsion was obtained. Reduce the shearing speed, add 10% urea-formaldehyde resin prepolymer aqueous solution while stirring, add 3% acetic acid in ba...
Embodiment 2
[0031] Example 2: 20% flusilazole microcapsule suspension.
[0032] Preparation method of urea-formaldehyde resin prepolymer aqueous solution: dissolve urea into formaldehyde, the weight ratio of urea and formaldehyde is 1:2, adjust the pH value to 8 with sodium hydroxide, stir at a low speed at a temperature of 80°C, and keep warm for 1 hours, a viscous and transparent urea-formaldehyde resin is generated, and deionized water equal to the total weight of urea and formaldehyde is added, and stirred at a low speed to obtain a transparent urea-formaldehyde resin prepolymer aqueous solution.
[0033] Dissolve 20% flusilazole completely in 7.5% xylene at room temperature, add 5% emulsifier styrylphenol polyoxyethylene ether and appropriate amount of deionized water while stirring, and shear at 2000 rpm After 20 minutes, a stable O / W emulsion was obtained. Reduce the shear speed, add 9% urea-formaldehyde resin prepolymer aqueous solution while stirring, add 3% acetic acid in batch...
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