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

Active Publication Date: 2014-04-16
SHENZHEN NOPOSION AGROCHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Existing water-dispersible granules such as thiophanate-methyl and carbendazim do not involve the use of synergists, resulting in poor control effects of water-dispersible granules, increased application dosage and high control costs. There are many deficiencies in that the dosage is large and the duration of effect is short, and the surfactant used will also lead to a large amount of water in the preparation process, prolonging the drying time

Method used

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  • Benzimidazole-contained bactericide water dispersible granule and preparation method thereof
  • Benzimidazole-contained bactericide water dispersible granule and preparation method thereof
  • Benzimidazole-contained bactericide water dispersible granule and preparation method thereof

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preparation example Construction

[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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Abstract

The invention provides a benzimidazole-contained bactericide water dispersible granule comprising active ingredients, a wetting agent, a dispersing agent, a disintegrating agent, a binder, filler, a synergist and a liquid surfactant, wherein the synergist is salicylic acid and / or salicylate, and the liquid surfactant is poly-phenol polyoxyethylene ether amine phosphate. The invention also provides a method for preparing the benzimidazole-contained bactericide water dispersible granule, comprising: mixing all components, carrying out jet milling after coarse grinding to obtain superfine powder; kneading the dilute liquid surfactant with the superfine powder into wet feed, pelleting, drying and screening to obtain a finished product. The water dispersible granule of the invention has favorable control effect, high disintegration speed, stable quality, simple preparation technology and low cost, is safe, protects environment and is convenient for industrial production and application.

Description

technical field [0001] The invention belongs to the field of pesticide preparations, in particular to a water-dispersible granule containing a benzimidazole fungicide and a preparation method thereof. Background technique [0002] Water-dispersible granules have been developed rapidly in recent years because of their high content of active ingredients, no dust, easy metering, good stability, convenient transportation, storage and application, and safety. [0003] Benzimidazole-containing fungicides mainly include thiophanate-methyl, thiabendazole, benomyl, carbendazim, etc., which are low-toxic fungicides with high efficiency and systemic spectrum. They have both protective and therapeutic effects, and can prevent and treat Various diseases caused by fungi such as crops and commercial crops. [0004] Existing water-dispersible granules such as thiophanate-methyl and carbendazim do not involve the use of synergists, resulting in poor control effects of water-dispersible gran...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01N25/04A01N47/34A01N43/78A01N47/38A01N47/18A01P3/00
Inventor 王文忠曹明章张洪孔建骆风华王新军
Owner SHENZHEN NOPOSION AGROCHEM
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