Pesticide water emulsion and preparation method thereof
A water emulsion and pesticide technology, applied in the field of pesticides, can solve the problems of non-environmentally friendly organic solvents, high concentration of epoxiconazole, high cost, etc., and achieve the effect of improving the control effect
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[0025] The embodiment of the present invention also provides a kind of preparation method of above-mentioned pesticide aqueous emulsion, comprises the following steps:
[0026] (1) Add epoxiconazole, organic solvent, and emulsifier into the reaction kettle, and mix uniformly to form an oil phase; stir and mix the thickener and water evenly to form a water phase;
[0027] Wherein, salicylic acid is evenly mixed in the water phase; and / or
[0028] Turpentine is uniformly mixed in the oil phase;
[0029] (2) Evenly mix the water phase and the oil phase, and ultrasonically emulsify to form a water emulsion.
[0030] Furthermore, an antifreezing agent and an antifoaming agent are uniformly mixed in the above water phase.
[0031] Furthermore, under the condition of stirring, the water phase and the oil phase are uniformly mixed, under the conditions of resonance frequency of 10-50 kHz and power of 100-1000 W, ultrasonic emulsification for 5-15 minutes to form the water emulsion. ...
Embodiment 1
[0034] Weigh 131.58 kg of epoxiconazole, 60 kg of D-limonene, 50 kg of N-methylpyrrolidone, 25 kg of polyoxyethylene polyoxypropylene block copolymer, 20 kg of fatty alcohol polyoxyethylene ether phosphate, and mix evenly to obtain oil Phase; take by weighing 30 kilograms of ethylene glycol, 30 kilograms of salicylic acid, 3 kilograms of xanthan gum, 1 kilogram of methylpolysiloxane, and 624.42 kilograms of water, and mix to obtain the water phase; Under the condition, add the water phase to the oil phase. Under the condition of homogenizer rotating speed 5000 rev / mins, homogenize 8 minutes, form 1000 kilograms of 12.5% epoxiconazole emulsions.
Embodiment 2
[0036] Weigh 131.58 kg of epoxiconazole, 60 kg of D-limonene, 50 kg of N-methylpyrrolidone, 25 kg of polyoxyethylene polyoxypropylene block copolymer, 20 kg of fatty alcohol polyoxyethylene ether phosphate, and mix evenly to obtain oil Phase; take by weighing 30 kilograms of ethylene glycol, 30 kilograms of salicylic acid, 3 kilograms of xanthan gum, 1 kilogram of methylpolysiloxane, and 649.42 kilograms of water, and mix to obtain the water phase; Under the condition, add the water phase to the oil phase. Under the conditions of a resonance frequency of 25 kHz and a power of 500 W, ultrasonic emulsification was performed for 8 minutes to form 1000 kg of 12.5% epoxiconazole emulsion.
[0037] In this example, the epoxiconazole emulsion was stored in heat at 54±2°C, and tested for low-temperature stability at 0±2°C and -15±2°C. The results are shown in Table 2. From the results in Table 2, it can be seen that the epoxiconazole emulsion in this example has excellent cold and ...
PUM

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