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Benomyl wettable powder and preparation method thereof

A technology of wettable powder and benomyl, which is applied in the field of pesticides, can solve the problems of bag swelling and agglomeration, and achieve the effect of solving bag swelling, good fluidity, and reducing the risk of pesticide damage

Pending Publication Date: 2022-07-29
青岛润农化工有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] Aiming at the problem that benomyl is easy to decompose and the wettable powder is easy to swell, agglomerate and produce dibutylurea, the present invention provides a wettable powder of benomyl. The wettable powder is selected by the auxiliary agent , inhibited the decomposition of benomyl, improved the heat storage stability and storage stability of the preparation, solved the problems of bag swelling and agglomeration during the storage and transportation of the preparation, reduced the production of dibutylurea, and eased the drug Harm risk

Method used

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  • Benomyl wettable powder and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] A benomyl wettable powder, its formula is (wt%): benomyl 50.0%, dispersant calcium lignosulfonate 3.75%, polycarboxylate sodium salt 1.25%, wetting agent sodium lauryl sulfate 1.5%, filler sucrose 25.0%, ordinary silica 2.5%, fumed silica 0.5%, anhydrous sodium sulfate supplement 100%.

[0036] The preparation method is as follows: the original drug of benomyl is pulverized to a particle size of 15-30 μm by an air-jet pulverizer; the dispersant, wetting agent and various fillers are mixed uniformly, and then pulverized to a particle size of 15-30 μm by an air-jet pulverizer; The pulverized auxiliary agent is mixed with the pulverized original drug for a second time, and the benomyl wettable powder is obtained after mixing evenly.

Embodiment 2

[0038] A benomyl wettable powder, the formula of which is (wt%): benomyl 50.0%, dispersant calcium lignosulfonate 4.5%, sodium polycarboxylate 1.5%, wetting agent sodium lauryl sulfate 2.0%, filler sucrose 25.0%, ordinary silica 2.5%, fumed silica 0.5%, and modified corn starch supplement 100%.

[0039] The preparation method is the same as in Example 1.

Embodiment 3

[0041] A benomyl wettable powder, the formula of which is (wt%): benomyl 50.0%, dispersant calcium lignosulfonate 5.0%, wetting agent sodium lauryl sulfate 1.5%, filler sucrose 25.0%, Ordinary silica 2.5%, fumed silica 0.5%, and anhydrous sodium sulfate make up 100%.

[0042] The preparation method is the same as in Example 1.

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Abstract

The invention discloses a benomyl wettable powder and a preparation method thereof. The benomyl wettable powder comprises the following components in percentage by weight: 45-55% of benomyl, 4-10% of dispersing agent, 0.5-4.0% of wetting agent and the balance of filler. Through the optimal combination of the auxiliaries, the decomposition of the benomyl can be effectively inhibited, the bag expansion phenomenon in the storage and transportation process is solved, and the packaging cost is reduced. According to the invention, the generation of dibutylurea is reduced, and the risk of phytotoxicity is reduced. According to the invention, the quality stability is improved, the heat storage stability or the storage stability under a high-temperature condition is improved, the problems of heat storage caking, poor wet screening, reduced suspension rate and the like are solved, and the material after heat storage keeps good fluidity, high suspension rate and good fineness.

Description

technical field [0001] The invention relates to a pesticide wettable powder, in particular to a benomyl wettable powder with good stability, no agglomeration, no bag swelling and high suspension rate and a preparation method thereof, belonging to the technical field of pesticides. Background technique [0002] Benomyl is a systemic fungicide developed by DuPont. It has the functions of protection, treatment and eradication. It can prevent diseases caused by fungi of Ascomycetes, Deuteromycetes and some Basidiomycetes effect. At present, it has stopped being sold in the United States, but it is still used in many countries, and there are also many domestic companies registered and produced. [0003] Benomyl is easy to decompose. First, it decomposes to produce butyl isocyanate and carbendazim. The butyl isocyanate further reacts with moisture to produce carbon dioxide and butylamine. It reacts with butylamine to produce N,N'-dibutylurea (dibutylurea). N,N'-dibutylurea is a ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N47/38A01N25/14A01N25/00A01P3/00
CPCA01N47/38A01N25/14A01N25/00Y02A50/30
Inventor 李志清王松莹吴勇王建伟崔丽孙鹏何金栓
Owner 青岛润农化工有限公司
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