Method for preparing low-hexachlorobenzene content chlorothalonil suspension

A chlorothalonil suspending agent and hexachlorobenzene technology, applied in the directions of botanical equipment and methods, fungicides, biocides, etc., can solve the problems of expensive raw materials, poor economic benefits, and reduction, and achieve good application prospects and reduce The effect of content

Inactive Publication Date: 2019-03-08
JIANGSU XINHE AGROCHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] In the above method, the concentration of hexachlorobenzene in the suspending agent is reduced to a certain extent with the dilution of water, but the water content in the suspending agent is constant. If the water content is too much, the efficacy of chlorothalonil will be reduced.
At present, enterprises generally control the concentration of hexachlorobenzene in the suspension concentrate by purchasing chlorothalonil raw materials with low hexachlorobenzene content, but this kind of raw material is expensive and has poor economic benefits, so it is difficult to be popularized on a large scale

Method used

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  • Method for preparing low-hexachlorobenzene content chlorothalonil suspension

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Embodiment 1

[0054] This embodiment provides a method for preparing a low-hexachlorobenzene-content chlorothalonil suspension. In terms of mass percentage, the low-hexachlorobenzene chlorothalonil suspension is composed of the following raw materials: chlorothalonil 40% , dipotassium hydrogen phosphate and bentonite 1%, sodium dodecylbenzenesulfonate 1%, fatty alcohol polyoxyethylene ether Pingpinga O-10 2%, sodium dodecylbenzenesulfonate 3%, xanthan gum 0.2 %, 0.5% triisobutyl phosphate, 0.2% Cathone, 5% propylene glycol, and the balance is water.

[0055] Prepare as follows:

[0056] (1) Add chlorothalonil, dipotassium hydrogen phosphate, bentonite, sodium dodecylbenzene sulfonate, fatty alcohol polyoxyethylene ether, O-10, sodium dodecylbenzene sulfonate and triisophosphate according to the formula amount Butyl ester is mixed with water, and ground until the particle size of the material is 0.5-5 μm to obtain a mixed slurry, wherein the addition of triisobutyl phosphate is 35% of the t...

Embodiment 2

[0060] This embodiment provides a method for preparing a low-hexachlorobenzene-content chlorothalonil suspension. In terms of mass percentage, the low-hexachlorobenzene chlorothalonil suspension is composed of the following raw materials: chlorothalonil 40% , bentonite 1%, sodium lignosulfonate 1%, mixture of alkylnaphthalene sulfonate and anionic wetting agent Morwet EFW 2.5%, phenethylphenol ethoxylate 2.5%, polyacrylamide 0.2%, phosphoric acid Tributyl 0.5%, sodium benzoate 0.2%, propylene glycol 5%, and the balance is water.

[0061] Prepare as follows:

[0062] (1) Mix chlorothalonil, bentonite, sodium lignosulfonate, alkylnaphthalene sulfonate and anionic wetting agent Morwet EFW, phenethylphenol polyoxyethylene ether, triisobutyl phosphate and water according to the formula quantity Mixing and grinding until the particle size of the material is 0.5-5 μm to obtain a mixed slurry, wherein the added amount of triisobutyl phosphate is 45% of the total amount, and the added...

Embodiment 3

[0066] This embodiment provides a method for preparing a low-hexachlorobenzene-content chlorothalonil suspension. In terms of mass percentage, the low-hexachlorobenzene chlorothalonil suspension is composed of the following raw materials: 50% chlorothalonil , white carbon black 1%, alkyl naphthalene sulfonate formaldehyde condensate Morwet D425 1%, alkylphenol polyoxyethylene ether OP-7 2%, magnesium aluminum silicate 0.5%, ethyl silicone oil 0.5%, propylene glycol 5% , POM 0.2%, the balance is water.

[0067] Prepare as follows:

[0068] (1) Mix chlorothalonil, white carbon black, alkylnaphthalene sulfonate formaldehyde condensate Morwet D425, alkylphenol polyoxyethylene ether OP-7, ethyl silicone oil and water according to the formula, and grind to the particle size of the material 0.5-5 μm to obtain a mixed slurry, wherein the amount of ethyl silicone oil added is 35% of the total amount, and the amount of water added is 65% of the total amount of water;

[0069] (2) Add ...

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Abstract

The invention relates to a method for preparing a low-hexachlorobenzene content chlorothalonil suspension. The method comprises the following steps: mixing chlorothalonil with a part of aids and wateraccording to a formula amount, and grinding so as to obtain mixed slurry; putting ammonium hydroxide into the mixed slurry, and carrying out heating treatment; putting the rest aids into the slurry after heating treatment, and dispersing, thereby obtaining the low-hexachlorobenzene content chlorothalonil suspension. According to the method, alkalization treatment is introduced in the preparationprocess of the chlorothalonil suspension, the content of hexachlorobenzene in the chlorothalonil suspension is greatly reduced, the content of the hexachlorobenzene in the obtained chlorothalonil suspension is less than 10 ppm, and good economic benefits and application prospects can be made.

Description

technical field [0001] The invention belongs to the technical field of pesticide preparation, and in particular relates to a preparation method of a low-hexachlorobenzene-content chlorothalonil suspension. Background technique [0002] Chlorothalonil is a high-efficiency, low-toxic, broad-spectrum, low-residue protective fungicide with non-systemic characteristics. The mechanism of action is that it can interact with glyceraldehyde triphosphate dehydrogenase in fungal cells. Proteins containing cysteine ​​in the enzyme combine to destroy the enzyme activity, destroying the metabolism of fungal cells and losing their vitality. [0003] Chlorothalonil is widely used in the control of fungal diseases in agriculture and forestry, especially in economic crops such as vegetables and fruits. According to Japanese data, chlorothalonil can prevent and control fifty-two diseases of more than thirty kinds of crops. In addition, chlorothalonil also has important uses in the anti-mold ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N37/34A01N25/04A01P3/00
CPCA01N25/04A01N37/34
Inventor 李强王海波孙景利
Owner JIANGSU XINHE AGROCHEM
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