Pyraclostrobin ester microcapsule suspending agent
A technology of microcapsule suspension and pyraclostrobin, applied in the direction of fungicides, biocides, biocides, etc., can solve the problems of economic waste, environmental pollution, etc., reduce pollution, reduce equipment investment, and prolong drug efficacy The effect of duration
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Embodiment 1
[0025] Example 1: 5% pyraclostrobin microcapsule suspension.
[0026] Dissolve urea in formaldehyde, the weight ratio of urea and formaldehyde is 1:1.5, adjust the pH value to 8.5 with 10% sodium hydroxide aqueous solution, stir at a low speed at a temperature of 70°C, and keep warm for 1 hour to form a viscous and transparent urea-formaldehyde resin, add deionized water equal to the total weight of urea and formaldehyde, and stir at a low speed to obtain a clear and transparent urea-formaldehyde resin prepolymer aqueous solution.
[0027] Dissolve 5% pyraclostrobin technical material in 10% xylene, add 2% Nongru 1601# to fully emulsify, stir at 30°C at a speed of 1000 rpm to fully disperse it, and obtain pyraclostrobin pyraclostrobin mixture solution.
[0028] Add the urea-formaldehyde resin prepolymer aqueous solution to the pyraclostrobin mixture solution stirred at 1000 rpm, stir for 15 minutes to form a stable emulsion, then reduce the stirring rate to 500 rpm, and slowl...
Embodiment 2
[0029] Example 2: 10% pyraclostrobin microcapsule suspension.
[0030] Dissolve urea in formaldehyde, the weight ratio of urea and formaldehyde is 1:2, adjust the pH value to 8 with 10% sodium hydroxide aqueous solution, stir at a low speed at a temperature of 80°C, and keep warm for 1 hour to form a viscous and transparent urea-formaldehyde resin, add deionized water equal to the total weight of urea and formaldehyde, and stir at a low speed to obtain a clear and transparent urea-formaldehyde resin prepolymer aqueous solution.
[0031] Dissolve 10% pyraclostrobin technical material in 12% xylene, add 2% Nongru 700# to fully emulsify, stir at 30°C at a speed of 1200 rpm to fully disperse it, and obtain pyraclostrobin pyraclostrobin mixture solution.
[0032] Add the urea-formaldehyde resin prepolymer aqueous solution to the pyraclostrobin mixture solution stirred at 1000 rpm, stir for 15 minutes to form a stable emulsion, then reduce the stirring rate to 500 rpm, and slowly a...
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