Benzimidazole-contained bactericide water dispersible granule and preparation method thereof
A technology of benzimidazole and fungicide, applied in the field of pesticide preparations, can solve the problems of poor control effect of water-dispersible granules, prolong the drying time, increase the amount of pesticide application, etc., reduce the amount of pesticide application, facilitate industrial production, The effect of broad production and application prospects
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[0033] At the same time, the embodiment of the present invention also provides a preparation method of a water-dispersible granule containing a benzimidazole fungicide, comprising the following steps:
[0034] Mix active ingredients, wetting agents, dispersants, synergists, disintegrants, binders, and fillers, coarsely pulverize them, and then airflow pulverize them to obtain superfine powders. The synergists are salicylic acid and / or Or salicylate; The liquid surfactant is polyarylphenol polyoxyethylene ether phosphate amine salt;
[0035] Add liquid surfactant and water to the superfine powder, knead it into a wet material, then granulate, dry, and sieve to get the finished product.
[0036] In the steps of preparing the ultrafine powder in the above-mentioned embodiment of the present invention, the mixing amount of the active ingredient, wetting agent, dispersant, synergist, disintegrant, binder, and filler is added according to the above formula. Coarse pulverization and...
Embodiment 1
[0045]Weigh 824.74 kg of thiophanate-methyl, 20 kg of wetting agent alkyl succinic acid sulfonate, 10 kg of mixture of dispersant alkylnaphthalene sulfonate polycondensate and lignin, 10 kg of dispersant polycarboxylate , 30 kilograms of synergist salicylic acid, 20 kilograms of disintegrant methacrylic acid and diethylbenzene resin, 10 kilograms of binder lactose and 35.26 kilograms of filler attapulgite. pink. Knead the resulting superfine powder with 40 kg of polyarylphenol polyoxyethylene ether phosphate amine salt and 50 kg of water to form a wet material, extrude and granulate in an extrusion granulator, and dry the granules at 50°C After 15 hours, sieve through a vibrating sieve to form 970 kilograms of 80% thiophanate-methyl water-dispersible granules. The 80% thiophanate-methyl water-dispersible granule of this embodiment has a suspension rate of 93%, a disintegration time of 96 seconds, and a wetting time of 5 seconds.
Embodiment 2
[0049] Weigh 721.65 kg of thiophanate-methyl, 20 kg of wetting agent sodium lauryl sulfate, 10 kg of dispersant polymer grafted lignosulfonate, and 10 kg of dispersant polyoxyethylene polyoxypropylene block copolymer , 30 kilograms of synergist sodium salicylate, 30 kilograms of disintegrant cross-linked polyvinylpyrrolidone, 10 kilograms of binder polyethylene glycol and 128.35 kilograms of filler white carbon black, after mixing coarsely pulverized, carry out airflow pulverization, obtain super powder. Knead the resulting superfine powder with 40 kg of polyarylphenol polyoxyethylene ether phosphate amine salt and 50 kg of water to form a wet material, extrude and granulate in an extrusion granulator, and dry the granules at 50°C After 15 hours, the granules were dried and sieved through a vibrating sieve to form 980 kg of 70% thiophanate-methyl water-dispersible granules. The suspension rate of the 70% thiophanate-methyl water-dispersible granule of this embodiment is 94%, ...
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